feat(events): 添加传输策略事件支持

添加了新的 transport_policy_event 事件类型，用于管理 HID
传输策略和蓝牙配置文件策略。该事件包含源模式、HID 传输策
略和蓝牙配置文件策略三个枚举值，并提供了相应的提交函数
和日志记录功能。

BREAKING CHANGE: 将原有的 mode_switch_event 替换为更具体的
transport_policy_event，相关模块需要更新以使用新的事件类
型。

CMakeLists.txt

@@ -6,10 +6,12 @@ project(blinky)
 
 list(APPEND CMAKE_MODULE_PATH ${ZEPHYR_BASE}/modules/nanopb)
 include(nanopb)
+zephyr_linker_sources(SECTIONS src/usb_function_hook.ld)
 
 zephyr_include_directories(
   inc
   inc/events
+  src
 )
 add_subdirectory(drivers)
 
@@ -20,33 +22,45 @@ zephyr_nanopb_sources(app
 target_sources(app PRIVATE
   src/main.c
   src/battery_module.c
-  src/ble_adv_ctrl_module.c
   src/ble_adv_uuid16.c
   src/ble_bas_module.c
   src/ble_hid_module.c
+  src/ble_nus_module.c
   src/display_module.c
   src/encoder_module.c
   src/hid_flowctrl_module.c
   src/keyboard_core_module.c
+  src/led_effect/led_effect_registry.c
+  src/led_effect/effects/led_effect_key_fade.c
+  src/led_strip_module.c
+  src/mode_policy_module.c
+  src/time_sync_module.c
   src/ui/ui_main.c
-  src/cdc_wrapper_module.c
   src/protocol_module.c
   src/usb_cdc_module.c
   src/usb_device_module.c
-  src/usb_hid_module.c
+  src/usb_hid_consumer_module.c
+  src/usb_hid_keyboard_module.c
   src/events/bat_state_event.c
+  src/events/datetime_event.c
   src/events/encoder_event.c
+  src/events/function_bitmap_state_event.c
+  src/events/function_bitmap_update_event.c
+  src/events/hid_channel_state_event.c
   src/events/hid_led_event.c
   src/events/hid_report_sent_event.c
-  src/events/hid_transport_state_event.c
   src/events/hid_tx_report_event.c
+  src/events/led_strip_en_event.c
   src/mode_switch_module.c
   src/events/keyboard_hid_report_event.c
   src/events/mode_switch_event.c
+  src/events/proto_rx_event.c
+  src/events/proto_transport_state_event.c
+  src/events/proto_tx_event.c
   src/events/set_protocol_event.c
-  src/events/usb_cdc_rx_event.c
+  src/events/theme_rgb_update_event.c
-  src/events/usb_cdc_tx_event.c
+  src/events/time_sync_event.c
-  src/events/usb_device_state_event.c
+  src/events/transport_policy_event.c
-  src/events/usb_function_ready_event.c
+  src/events/usb_control_event.c
-  src/events/usb_prepare_event.c
+  src/events/usb_state_event.c
 )

boards/atguigu/mini_keyboard/mini_keyboard-pinctrl.dtsi

@@ -46,6 +46,21 @@
 		};
 	};
 
+	spi1_ws2812_default: spi1_ws2812_default {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 1, 4)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 20)>;
+		};
+	};
+
+	spi1_ws2812_sleep: spi1_ws2812_sleep {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 1, 4)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 20)>;
+			low-power-enable;
+		};
+	};
+
 	pwm0_default: pwm0_default {
 		group1 {
 			psels = <NRF_PSEL(PWM_OUT0, 1, 11)>;

boards/atguigu/mini_keyboard/mini_keyboard.dts

@@ -2,6 +2,7 @@
 #include <nordic/nrf52840_qiaa.dtsi>
 #include "mini_keyboard-pinctrl.dtsi"
 #include <zephyr/dt-bindings/adc/adc.h>
+#include <zephyr/dt-bindings/led/led.h>
 #include <zephyr/dt-bindings/mipi_dbi/mipi_dbi.h>
 #include <zephyr/dt-bindings/pwm/pwm.h>
 
@@ -14,20 +15,29 @@
 		zephyr,flash = &flash0;
 		zephyr,code-partition = &slot0_partition;
 		zephyr,display = &screen_lcd;
+		zephyr,led-strip = &led_strip;
+		zephyr,console = &cdc_acm_uart1;
+		zephyr,log-uart = &log_uarts;
 	};
 
 	aliases {
         led0 = &myled0;
+		led-strip = &led_strip;
 		qdec0 = &qdec;
 		backlight = &backlight;
     };
 
+	log_uarts: log_uarts {
+		compatible = "zephyr,log-uart";
+		uarts = <&cdc_acm_uart1>;
+	};
+
 	hid_kbd: hid_kbd {
 		compatible = "zephyr,hid-device";
 		label = "HID_KBD";
 		protocol-code = "keyboard";
 		in-report-size = <29>;
-		out-report-size = <1>;
+		out-report-size = <29>;
 		in-polling-period-us = <1000>;
 		out-polling-period-us = <1000>;
 	};
@@ -206,6 +216,28 @@
 	cs-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
 };
 
+&spi1 {
+	status = "okay";
+	pinctrl-0 = <&spi1_ws2812_default>;
+	pinctrl-1 = <&spi1_ws2812_sleep>;
+	pinctrl-names = "default", "sleep";
+
+	led_strip: ws2812@0 {
+		compatible = "worldsemi,ws2812-spi";
+		reg = <0>;
+		spi-max-frequency = <6400000>;
+		chain-length = <17>;
+		color-mapping = <LED_COLOR_ID_GREEN
+				 LED_COLOR_ID_RED
+				 LED_COLOR_ID_BLUE>;
+		spi-one-frame = <0x70>;
+		spi-zero-frame = <0x40>;
+		bits-per-symbol = <8>;
+		reset-delay = <8>;
+		supply-gpios = <&gpio0 13 GPIO_ACTIVE_HIGH>;
+	};
+};
+
 &pwm0 {
 	status = "okay";
 	pinctrl-0 = <&pwm0_default>;
@@ -235,4 +267,9 @@
 		compatible = "zephyr,cdc-acm-uart";
 		label = "CDC_ACM_0";
 	};
+
+	cdc_acm_uart1: cdc_acm_uart1 {
+		compatible = "zephyr,cdc-acm-uart";
+		label = "CDC_ACM_1";
+	};
 };

inc/cdc_wrapper_module.h

@@ -1,12 +0,0 @@
-#ifndef BLINKY_CDC_WRAPPER_MODULE_H_
-#define BLINKY_CDC_WRAPPER_MODULE_H_
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_CDC_WRAPPER_MODULE_H_ */

inc/events/bat_state_event.h

@@ -20,6 +20,16 @@ struct bat_state_event {
 
 APP_EVENT_TYPE_DECLARE(bat_state_event);
 
+static inline void submit_bat_state_event(uint8_t soc, bool charging, bool full)
+{
+	struct bat_state_event *event = new_bat_state_event();
+
+	event->soc = soc;
+	event->charging = charging;
+	event->full = full;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/datetime_event.h

@@ -0,0 +1,45 @@
+#ifndef BLINKY_DATETIME_EVENT_H_
+#define BLINKY_DATETIME_EVENT_H_
+
+#include <errno.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define DATETIME_EVENT_DATE_TEXT_LEN 16
+#define DATETIME_EVENT_TIME_TEXT_LEN 16
+
+struct datetime_event {
+	struct app_event_header header;
+	char date_text[DATETIME_EVENT_DATE_TEXT_LEN];
+	char time_text[DATETIME_EVENT_TIME_TEXT_LEN];
+};
+
+APP_EVENT_TYPE_DECLARE(datetime_event);
+
+static inline int submit_datetime_event(const char *date_text, const char *time_text)
+{
+	struct datetime_event *event = new_datetime_event();
+
+	if ((date_text == NULL) || (time_text == NULL)) {
+		return -EINVAL;
+	}
+
+	strncpy(event->date_text, date_text, sizeof(event->date_text));
+	event->date_text[sizeof(event->date_text) - 1] = '\0';
+	strncpy(event->time_text, time_text, sizeof(event->time_text));
+	event->time_text[sizeof(event->time_text) - 1] = '\0';
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_DATETIME_EVENT_H_ */

inc/events/encoder_event.h

@@ -15,6 +15,14 @@ struct encoder_event {
 
 APP_EVENT_TYPE_DECLARE(encoder_event);
 
+static inline void submit_encoder_event(int8_t detents)
+{
+	struct encoder_event *event = new_encoder_event();
+
+	event->detents = detents;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/function_bitmap_state_event.h

@@ -0,0 +1,41 @@
+#ifndef BLINKY_FUNCTION_BITMAP_STATE_EVENT_H_
+#define BLINKY_FUNCTION_BITMAP_STATE_EVENT_H_
+
+#include <errno.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "keyboard_core.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct function_bitmap_state_event {
+	struct app_event_header header;
+	uint8_t bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
+};
+
+APP_EVENT_TYPE_DECLARE(function_bitmap_state_event);
+
+static inline int submit_function_bitmap_state_event(const uint8_t *bitmap)
+{
+	struct function_bitmap_state_event *event;
+
+	if (bitmap == NULL) {
+		return -EINVAL;
+	}
+
+	event = new_function_bitmap_state_event();
+	memcpy(event->bitmap, bitmap, sizeof(event->bitmap));
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_FUNCTION_BITMAP_STATE_EVENT_H_ */

inc/events/function_bitmap_update_event.h

@@ -0,0 +1,41 @@
+#ifndef BLINKY_FUNCTION_BITMAP_UPDATE_EVENT_H_
+#define BLINKY_FUNCTION_BITMAP_UPDATE_EVENT_H_
+
+#include <errno.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "keyboard_core.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct function_bitmap_update_event {
+	struct app_event_header header;
+	uint8_t bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
+};
+
+APP_EVENT_TYPE_DECLARE(function_bitmap_update_event);
+
+static inline int submit_function_bitmap_update_event(const uint8_t *bitmap)
+{
+	struct function_bitmap_update_event *event;
+
+	if (bitmap == NULL) {
+		return -EINVAL;
+	}
+
+	event = new_function_bitmap_update_event();
+	memcpy(event->bitmap, bitmap, sizeof(event->bitmap));
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_FUNCTION_BITMAP_UPDATE_EVENT_H_ */

inc/events/hid_channel_state_event.h

@@ -0,0 +1,38 @@
+#ifndef BLINKY_HID_CHANNEL_STATE_EVENT_H_
+#define BLINKY_HID_CHANNEL_STATE_EVENT_H_
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "keyboard_core.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct hid_channel_state_event {
+	struct app_event_header header;
+	enum hid_send_channel channel;
+	uint8_t report_ready_bm;
+	enum keyboard_protocol_mode protocol_mode;
+};
+
+APP_EVENT_TYPE_DECLARE(hid_channel_state_event);
+
+static inline void submit_hid_channel_state_event(
+	enum hid_send_channel channel, uint8_t report_ready_bm,
+	enum keyboard_protocol_mode protocol_mode)
+{
+	struct hid_channel_state_event *event = new_hid_channel_state_event();
+
+	event->channel = channel;
+	event->report_ready_bm = report_ready_bm;
+	event->protocol_mode = protocol_mode;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_HID_CHANNEL_STATE_EVENT_H_ */

inc/events/hid_led_event.h

@@ -18,6 +18,15 @@ struct hid_led_event {
 
 APP_EVENT_TYPE_DECLARE(hid_led_event);
 
+static inline void submit_hid_led_event(enum hid_transport transport, uint8_t led_bm)
+{
+	struct hid_led_event *event = new_hid_led_event();
+
+	event->transport = transport;
+	event->led_bm = led_bm;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/hid_report_sent_event.h

@@ -12,7 +12,7 @@ extern "C" {
 
 struct hid_report_sent_event {
 	struct app_event_header header;
-	enum hid_transport transport;
+	enum hid_send_channel channel;
 	enum keyboard_report_type report_type;
 	uint16_t sequence;
 	bool error;
@@ -20,6 +20,19 @@ struct hid_report_sent_event {
 
 APP_EVENT_TYPE_DECLARE(hid_report_sent_event);
 
+static inline void submit_hid_report_sent_event(enum hid_send_channel channel,
+						enum keyboard_report_type report_type,
+						uint16_t sequence, bool error)
+{
+	struct hid_report_sent_event *event = new_hid_report_sent_event();
+
+	event->channel = channel;
+	event->report_type = report_type;
+	event->sequence = sequence;
+	event->error = error;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/hid_transport_state_event.h

@@ -1,28 +0,0 @@
-#ifndef BLINKY_HID_TRANSPORT_STATE_EVENT_H_
-#define BLINKY_HID_TRANSPORT_STATE_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#include "keyboard_core.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct hid_transport_state_event {
-	struct app_event_header header;
-	enum hid_transport transport;
-	bool ready;
-	bool keys_ready;
-	bool consumer_ready;
-	enum keyboard_protocol_mode protocol_mode;
-};
-
-APP_EVENT_TYPE_DECLARE(hid_transport_state_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_HID_TRANSPORT_STATE_EVENT_H_ */

inc/events/hid_tx_report_event.h

@@ -1,6 +1,10 @@
 #ifndef BLINKY_HID_TX_REPORT_EVENT_H_
 #define BLINKY_HID_TX_REPORT_EVENT_H_
 
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+
 #include <app_event_manager.h>
 #include <app_event_manager_profiler_tracer.h>
 
@@ -12,7 +16,7 @@ extern "C" {
 
 struct hid_tx_report_event {
 	struct app_event_header header;
-	enum hid_transport transport;
+	enum hid_send_channel channel;
 	enum keyboard_report_type report_type;
 	enum keyboard_protocol_mode protocol_mode;
 	uint16_t sequence;
@@ -21,6 +25,31 @@ struct hid_tx_report_event {
 
 APP_EVENT_TYPE_DYNDATA_DECLARE(hid_tx_report_event);
 
+static inline int submit_hid_tx_report_event(enum hid_send_channel channel,
+					     enum keyboard_report_type report_type,
+					     enum keyboard_protocol_mode protocol_mode,
+					     uint16_t sequence,
+					     const uint8_t *data, size_t size)
+{
+	struct hid_tx_report_event *event;
+
+	if ((data == NULL) && (size > 0U)) {
+		return -EINVAL;
+	}
+
+	event = new_hid_tx_report_event(size);
+	event->channel = channel;
+	event->report_type = report_type;
+	event->protocol_mode = protocol_mode;
+	event->sequence = sequence;
+	if (size > 0U) {
+		memcpy(event->dyndata.data, data, size);
+	}
+
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/keyboard_hid_report_event.h

@@ -1,6 +1,10 @@
 #ifndef BLINKY_KEYBOARD_HID_REPORT_EVENT_H_
 #define BLINKY_KEYBOARD_HID_REPORT_EVENT_H_
 
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+
 #include <app_event_manager.h>
 #include <app_event_manager_profiler_tracer.h>
 
@@ -22,6 +26,30 @@ struct keyboard_hid_report_event {
 
 APP_EVENT_TYPE_DYNDATA_DECLARE(keyboard_hid_report_event);
 
+static inline int submit_keyboard_hid_report_event(
+	enum mode_switch_mode mode, enum keyboard_report_type report_type,
+	enum keyboard_protocol_mode protocol_mode,
+	enum hid_queue_policy queue_policy, const uint8_t *data, size_t size)
+{
+	struct keyboard_hid_report_event *event;
+
+	if ((data == NULL) && (size > 0U)) {
+		return -EINVAL;
+	}
+
+	event = new_keyboard_hid_report_event(size);
+	event->mode = mode;
+	event->report_type = report_type;
+	event->protocol_mode = protocol_mode;
+	event->queue_policy = queue_policy;
+	if (size > 0U) {
+		memcpy(event->dyndata.data, data, size);
+	}
+
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/led_strip_en_event.h

@@ -0,0 +1,32 @@
+#ifndef BLINKY_LED_STRIP_EN_EVENT_H_
+#define BLINKY_LED_STRIP_EN_EVENT_H_
+
+#include <stdbool.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct led_strip_en_event {
+	struct app_event_header header;
+	bool enabled;
+};
+
+APP_EVENT_TYPE_DECLARE(led_strip_en_event);
+
+static inline void submit_led_strip_en_event(bool enabled)
+{
+	struct led_strip_en_event *event = new_led_strip_en_event();
+
+	event->enabled = enabled;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_LED_STRIP_EN_EVENT_H_ */

inc/events/mode_switch_event.h

@@ -9,6 +9,7 @@ extern "C" {
 #endif
 
 enum mode_switch_mode {
+	MODE_SWITCH_INVALID,
 	MODE_SWITCH_USB,
 	MODE_SWITCH_24G,
 	MODE_SWITCH_BLE,
@@ -22,6 +23,16 @@ struct mode_switch_event {
 
 APP_EVENT_TYPE_DECLARE(mode_switch_event);
 
+static inline void submit_mode_switch_event(enum mode_switch_mode mode,
+					    uint16_t voltage_mv)
+{
+	struct mode_switch_event *event = new_mode_switch_event();
+
+	event->mode = mode;
+	event->voltage_mv = voltage_mv;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/proto_common.h

@@ -0,0 +1,23 @@
+#ifndef BLINKY_PROTO_COMMON_H_
+#define BLINKY_PROTO_COMMON_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum proto_transport {
+	PROTO_TRANSPORT_USB_CDC = 0,
+	PROTO_TRANSPORT_BLE_NUS,
+	PROTO_TRANSPORT_COUNT,
+};
+
+enum proto_transport_link_state {
+	PROTO_TRANSPORT_LINK_DOWN = 0,
+	PROTO_TRANSPORT_LINK_READY,
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_PROTO_COMMON_H_ */

inc/events/proto_rx_event.h

@@ -0,0 +1,50 @@
+#ifndef BLINKY_PROTO_RX_EVENT_H_
+#define BLINKY_PROTO_RX_EVENT_H_
+
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "proto_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct proto_rx_event {
+	struct app_event_header header;
+	enum proto_transport transport;
+	struct event_dyndata dyndata;
+};
+
+APP_EVENT_TYPE_DYNDATA_DECLARE(proto_rx_event);
+
+static inline int submit_proto_rx_event(enum proto_transport transport,
+					const uint8_t *data, size_t len)
+{
+	struct proto_rx_event *event;
+
+	if ((transport >= PROTO_TRANSPORT_COUNT) ||
+	    ((data == NULL) && (len > 0U))) {
+		return -EINVAL;
+	}
+
+	event = new_proto_rx_event(len);
+	event->transport = transport;
+
+	if (len > 0U) {
+		memcpy(event->dyndata.data, data, len);
+	}
+
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_PROTO_RX_EVENT_H_ */

inc/events/proto_transport_state_event.h

@@ -0,0 +1,36 @@
+#ifndef BLINKY_PROTO_TRANSPORT_STATE_EVENT_H_
+#define BLINKY_PROTO_TRANSPORT_STATE_EVENT_H_
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "proto_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct proto_transport_state_event {
+	struct app_event_header header;
+	enum proto_transport transport;
+	enum proto_transport_link_state state;
+};
+
+APP_EVENT_TYPE_DECLARE(proto_transport_state_event);
+
+static inline void submit_proto_transport_state_event(
+	enum proto_transport transport, enum proto_transport_link_state state)
+{
+	struct proto_transport_state_event *event =
+		new_proto_transport_state_event();
+
+	event->transport = transport;
+	event->state = state;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_PROTO_TRANSPORT_STATE_EVENT_H_ */

inc/events/proto_tx_event.h

@@ -0,0 +1,50 @@
+#ifndef BLINKY_PROTO_TX_EVENT_H_
+#define BLINKY_PROTO_TX_EVENT_H_
+
+#include <errno.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "proto_common.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct proto_tx_event {
+	struct app_event_header header;
+	enum proto_transport transport;
+	struct event_dyndata dyndata;
+};
+
+APP_EVENT_TYPE_DYNDATA_DECLARE(proto_tx_event);
+
+static inline int submit_proto_tx_event(enum proto_transport transport,
+					const uint8_t *data, size_t len)
+{
+	struct proto_tx_event *event;
+
+	if ((transport >= PROTO_TRANSPORT_COUNT) ||
+	    ((data == NULL) && (len > 0U))) {
+		return -EINVAL;
+	}
+
+	event = new_proto_tx_event(len);
+	event->transport = transport;
+
+	if (len > 0U) {
+		memcpy(event->dyndata.data, data, len);
+	}
+
+	APP_EVENT_SUBMIT(event);
+	return 0;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_PROTO_TX_EVENT_H_ */

inc/events/set_protocol_event.h

@@ -18,6 +18,16 @@ struct set_protocol_event {
 
 APP_EVENT_TYPE_DECLARE(set_protocol_event);
 
+static inline void submit_set_protocol_event(enum hid_transport transport,
+					     enum keyboard_protocol_mode protocol_mode)
+{
+	struct set_protocol_event *event = new_set_protocol_event();
+
+	event->transport = transport;
+	event->protocol_mode = protocol_mode;
+	APP_EVENT_SUBMIT(event);
+}
+
 #ifdef __cplusplus
 }
 #endif

inc/events/theme_rgb_update_event.h

@@ -0,0 +1,32 @@
+#ifndef BLINKY_THEME_RGB_UPDATE_EVENT_H_
+#define BLINKY_THEME_RGB_UPDATE_EVENT_H_
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#include "theme_color.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct theme_rgb_update_event {
+	struct app_event_header header;
+	struct theme_rgb theme;
+};
+
+APP_EVENT_TYPE_DECLARE(theme_rgb_update_event);
+
+static inline void submit_theme_rgb_update_event(struct theme_rgb theme)
+{
+	struct theme_rgb_update_event *event = new_theme_rgb_update_event();
+
+	event->theme = theme;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_THEME_RGB_UPDATE_EVENT_H_ */

inc/events/time_sync_event.h

@@ -0,0 +1,40 @@
+#ifndef BLINKY_TIME_SYNC_EVENT_H_
+#define BLINKY_TIME_SYNC_EVENT_H_
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct time_sync_event {
+	struct app_event_header header;
+	uint32_t version;
+	uint32_t flags;
+	int32_t timezone_min;
+	uint64_t utc_ms;
+	uint32_t accuracy_ms;
+};
+
+APP_EVENT_TYPE_DECLARE(time_sync_event);
+
+static inline void submit_time_sync_event(uint32_t version, uint32_t flags,
+					  int32_t timezone_min, uint64_t utc_ms,
+					  uint32_t accuracy_ms)
+{
+	struct time_sync_event *event = new_time_sync_event();
+
+	event->version = version;
+	event->flags = flags;
+	event->timezone_min = timezone_min;
+	event->utc_ms = utc_ms;
+	event->accuracy_ms = accuracy_ms;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_TIME_SYNC_EVENT_H_ */

inc/events/transport_policy_event.h

@@ -0,0 +1,42 @@
+#ifndef BLINKY_TRANSPORT_POLICY_EVENT_H_
+#define BLINKY_TRANSPORT_POLICY_EVENT_H_
+
+#include <app_event_manager.h>
+
+#include "mode_switch_event.h"
+
+enum hid_transport_policy {
+	HID_TRANSPORT_POLICY_NONE = 0,
+	HID_TRANSPORT_POLICY_USB,
+	HID_TRANSPORT_POLICY_BLE,
+};
+
+enum ble_profile_policy {
+	BLE_PROFILE_POLICY_NONE = 0,
+	BLE_PROFILE_POLICY_GENERAL,
+	BLE_PROFILE_POLICY_DONGLE,
+};
+
+struct transport_policy_event {
+	struct app_event_header header;
+	enum mode_switch_mode source_mode;
+	enum hid_transport_policy hid_transport;
+	enum ble_profile_policy ble_profile;
+};
+
+APP_EVENT_TYPE_DECLARE(transport_policy_event);
+
+static inline void submit_transport_policy_event(
+	enum mode_switch_mode source_mode,
+	enum hid_transport_policy hid_transport,
+	enum ble_profile_policy ble_profile)
+{
+	struct transport_policy_event *event = new_transport_policy_event();
+
+	event->source_mode = source_mode;
+	event->hid_transport = hid_transport;
+	event->ble_profile = ble_profile;
+	APP_EVENT_SUBMIT(event);
+}
+
+#endif /* BLINKY_TRANSPORT_POLICY_EVENT_H_ */

inc/events/usb_cdc_rx_event.h

@@ -1,22 +0,0 @@
-#ifndef BLINKY_USB_CDC_RX_EVENT_H_
-#define BLINKY_USB_CDC_RX_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct usb_cdc_rx_event {
-	struct app_event_header header;
-	struct event_dyndata dyndata;
-};
-
-APP_EVENT_TYPE_DYNDATA_DECLARE(usb_cdc_rx_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_CDC_RX_EVENT_H_ */

inc/events/usb_cdc_tx_event.h

@@ -1,22 +0,0 @@
-#ifndef BLINKY_USB_CDC_TX_EVENT_H_
-#define BLINKY_USB_CDC_TX_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct usb_cdc_tx_event {
-	struct app_event_header header;
-	struct event_dyndata dyndata;
-};
-
-APP_EVENT_TYPE_DYNDATA_DECLARE(usb_cdc_tx_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_CDC_TX_EVENT_H_ */

inc/events/usb_control_event.h

@@ -0,0 +1,71 @@
+#ifndef BLINKY_USB_CONTROL_EVENT_H_
+#define BLINKY_USB_CONTROL_EVENT_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+#include <zephyr/device.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum usb_control_event_type {
+	USB_CONTROL_EVENT_CDC_LINE_STATE = 0,
+	USB_CONTROL_EVENT_CDC_LINE_CODING,
+};
+
+struct usb_control_event {
+	struct app_event_header header;
+	enum usb_control_event_type type;
+	const struct device *dev;
+	union {
+		struct {
+			bool dtr;
+		} cdc_line_state;
+		struct {
+			uint32_t baudrate;
+			uint8_t data_bits;
+			uint8_t stop_bits;
+			uint8_t parity;
+			uint8_t flow_ctrl;
+		} cdc_line_coding;
+	} data;
+};
+
+APP_EVENT_TYPE_DECLARE(usb_control_event);
+
+static inline void submit_usb_control_cdc_line_state_event(
+	const struct device *dev, bool dtr)
+{
+	struct usb_control_event *event = new_usb_control_event();
+
+	event->type = USB_CONTROL_EVENT_CDC_LINE_STATE;
+	event->dev = dev;
+	event->data.cdc_line_state.dtr = dtr;
+	APP_EVENT_SUBMIT(event);
+}
+
+static inline void submit_usb_control_cdc_line_coding_event(
+	const struct device *dev, uint32_t baudrate, uint8_t data_bits,
+	uint8_t stop_bits, uint8_t parity, uint8_t flow_ctrl)
+{
+	struct usb_control_event *event = new_usb_control_event();
+
+	event->type = USB_CONTROL_EVENT_CDC_LINE_CODING;
+	event->dev = dev;
+	event->data.cdc_line_coding.baudrate = baudrate;
+	event->data.cdc_line_coding.data_bits = data_bits;
+	event->data.cdc_line_coding.stop_bits = stop_bits;
+	event->data.cdc_line_coding.parity = parity;
+	event->data.cdc_line_coding.flow_ctrl = flow_ctrl;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_USB_CONTROL_EVENT_H_ */

inc/events/usb_device_state_event.h

@@ -1,24 +0,0 @@
-#ifndef BLINKY_USB_DEVICE_STATE_EVENT_H_
-#define BLINKY_USB_DEVICE_STATE_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#include "usb_device_module.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct usb_device_state_event {
-	struct app_event_header header;
-	enum usb_device_state state;
-};
-
-APP_EVENT_TYPE_DECLARE(usb_device_state_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_DEVICE_STATE_EVENT_H_ */

inc/events/usb_function_ready_event.h

@@ -1,24 +0,0 @@
-#ifndef BLINKY_USB_FUNCTION_READY_EVENT_H_
-#define BLINKY_USB_FUNCTION_READY_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#include "usb_device_module.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct usb_function_ready_event {
-	struct app_event_header header;
-	uint8_t function_mask;
-};
-
-APP_EVENT_TYPE_DECLARE(usb_function_ready_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_FUNCTION_READY_EVENT_H_ */

inc/events/usb_prepare_event.h

@@ -1,21 +0,0 @@
-#ifndef BLINKY_USB_PREPARE_EVENT_H_
-#define BLINKY_USB_PREPARE_EVENT_H_
-
-#include <app_event_manager.h>
-#include <app_event_manager_profiler_tracer.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct usb_prepare_event {
-	struct app_event_header header;
-};
-
-APP_EVENT_TYPE_DECLARE(usb_prepare_event);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_PREPARE_EVENT_H_ */

inc/events/usb_state_event.h

@@ -0,0 +1,41 @@
+#ifndef BLINKY_USB_STATE_EVENT_H_
+#define BLINKY_USB_STATE_EVENT_H_
+
+#include <stdint.h>
+
+#include <app_event_manager.h>
+#include <app_event_manager_profiler_tracer.h>
+#include <zephyr/sys/util.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum usb_state {
+	USB_STATE_DISABLED = 0,
+	USB_STATE_DISCONNECTED,
+	USB_STATE_POWERED,
+	USB_STATE_ACTIVE,
+	USB_STATE_SUSPENDED,
+};
+
+struct usb_state_event {
+	struct app_event_header header;
+	enum usb_state state;
+};
+
+APP_EVENT_TYPE_DECLARE(usb_state_event);
+
+static inline void submit_usb_state(enum usb_state state)
+{
+	struct usb_state_event *event = new_usb_state_event();
+
+	event->state = state;
+	APP_EVENT_SUBMIT(event);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_USB_STATE_EVENT_H_ */

inc/keyboard_core.h

@@ -8,6 +8,8 @@ extern "C" {
 #endif
 
 #define KEYBOARD_BOOT_REPORT_SIZE 8U
+#define KEYBOARD_PROTOCOL_USAGE_MAX 0xE7U
+#define KEYBOARD_PROTOCOL_BITMAP_BYTES ((KEYBOARD_PROTOCOL_USAGE_MAX + 8U) / 8U)
 #define KEYBOARD_NKRO_USAGE_MAX 0xDFU
 #define KEYBOARD_NKRO_BITMAP_BYTES ((KEYBOARD_NKRO_USAGE_MAX + 8U) / 8U)
 #define KEYBOARD_NKRO_REPORT_SIZE (1U + KEYBOARD_NKRO_BITMAP_BYTES)
@@ -34,6 +36,13 @@ enum hid_transport {
 	HID_TRANSPORT_COUNT,
 };
 
+enum hid_send_channel {
+	HID_SEND_CH_USB_KEYS,
+	HID_SEND_CH_USB_CONSUMER,
+	HID_SEND_CH_BLE_SHARED,
+	HID_SEND_CH_COUNT,
+};
+
 enum keyboard_consumer_control {
 	KEYBOARD_CONSUMER_CTRL_MUTE,
 	KEYBOARD_CONSUMER_CTRL_VOLUME_UP,

inc/module_lifecycle.h

@@ -0,0 +1,207 @@
+#ifndef MODULE_LIFECYCLE_H_
+#define MODULE_LIFECYCLE_H_
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include <caf/events/module_state_event.h>
+
+enum module_lifecycle {
+	LC_UNINIT,
+	LC_STOPPED,
+	LC_RUNNING,
+	LC_ERROR,
+};
+
+enum module_lifecycle_mode {
+	ML_MODE_NONE,
+	ML_MODE_POWER,
+	ML_MODE_SUSPEND,
+};
+
+struct module_lifecycle_ops {
+	int (*do_init)(void);
+	int (*do_start)(void);
+	int (*do_stop)(void);
+};
+
+struct module_lifecycle_cfg {
+	enum module_lifecycle_mode mode;
+	enum module_state stopped_state;
+};
+
+struct module_lifecycle_ctx {
+	enum module_lifecycle state;
+	const struct module_lifecycle_cfg *cfg;
+	const struct module_lifecycle_ops *ops;
+};
+
+static inline bool module_lifecycle_is_running(
+	const struct module_lifecycle_ctx *ctx)
+{
+	return ctx->state == LC_RUNNING;
+}
+
+static inline bool module_lifecycle_is_initialized(
+	const struct module_lifecycle_ctx *ctx)
+{
+	return (ctx->state != LC_UNINIT) && (ctx->state != LC_ERROR);
+}
+
+static inline const char *module_lifecycle_name(enum module_lifecycle state)
+{
+	switch (state) {
+	case LC_UNINIT:
+		return "UNINIT";
+	case LC_STOPPED:
+		return "STOPPED";
+	case LC_RUNNING:
+		return "RUNNING";
+	case LC_ERROR:
+		return "ERROR";
+	default:
+		return "?";
+	}
+}
+
+static inline int module_lifecycle_validate_ops(
+	const struct module_lifecycle_ctx *ctx)
+{
+	if ((ctx == NULL) || (ctx->cfg == NULL) || (ctx->ops == NULL) ||
+	    (ctx->ops->do_init == NULL)) {
+		return -EINVAL;
+	}
+
+	switch (ctx->cfg->mode) {
+	case ML_MODE_NONE:
+		return 0;
+
+	case ML_MODE_POWER:
+	case ML_MODE_SUSPEND:
+		return (ctx->ops->do_start != NULL) && (ctx->ops->do_stop != NULL) ?
+			       0 :
+			       -EINVAL;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static inline int module_lifecycle_report_state(
+	struct module_lifecycle_ctx *ctx,
+	enum module_lifecycle state)
+{
+	switch (state) {
+	case LC_RUNNING:
+		module_set_state(MODULE_STATE_READY);
+		return 0;
+
+	case LC_STOPPED:
+		switch (ctx->cfg->mode) {
+		case ML_MODE_POWER:
+			module_set_state(ctx->cfg->stopped_state);
+			return 0;
+
+		case ML_MODE_SUSPEND:
+			module_set_state(MODULE_STATE_SUSPENDED);
+			return 0;
+
+		case ML_MODE_NONE:
+			return 0;
+
+		default:
+			return -EINVAL;
+		}
+
+	case LC_ERROR:
+		module_set_state(MODULE_STATE_ERROR);
+		return 0;
+
+	case LC_UNINIT:
+	default:
+		return -EINVAL;
+	}
+}
+
+static inline int module_lifecycle_fail(struct module_lifecycle_ctx *ctx, int err)
+{
+	ctx->state = LC_ERROR;
+	(void)module_lifecycle_report_state(ctx, LC_ERROR);
+
+	return err ? err : -EIO;
+}
+
+static inline int module_set_lifecycle(struct module_lifecycle_ctx *ctx,
+				       enum module_lifecycle target)
+{
+	int err;
+
+	err = module_lifecycle_validate_ops(ctx);
+	if (err) {
+		return err;
+	}
+
+	if (ctx->state == LC_ERROR) {
+		return -EFAULT;
+	}
+
+	if (ctx->state == target) {
+		return 0;
+	}
+
+	if (target == LC_ERROR) {
+		return module_lifecycle_fail(ctx, -EIO);
+	}
+
+	if ((target != LC_STOPPED) && (target != LC_RUNNING)) {
+		return -EPERM;
+	}
+
+	switch (ctx->state) {
+	case LC_UNINIT:
+		err = ctx->ops->do_init();
+		if (err) {
+			return module_lifecycle_fail(ctx, err);
+		}
+
+		ctx->state = LC_STOPPED;
+		err = module_lifecycle_report_state(ctx, LC_STOPPED);
+		if (err) {
+			return module_lifecycle_fail(ctx, err);
+		}
+
+		return module_set_lifecycle(ctx, target);
+
+	case LC_STOPPED:
+		if (target != LC_RUNNING) {
+			return -EPERM;
+		}
+
+		err = ctx->ops->do_start ? ctx->ops->do_start() : 0;
+		if (err) {
+			return module_lifecycle_fail(ctx, err);
+		}
+
+		ctx->state = LC_RUNNING;
+		return module_lifecycle_report_state(ctx, LC_RUNNING);
+
+	case LC_RUNNING:
+		if (target != LC_STOPPED) {
+			return -EPERM;
+		}
+
+		err = ctx->ops->do_stop ? ctx->ops->do_stop() : 0;
+		if (err) {
+			return module_lifecycle_fail(ctx, err);
+		}
+
+		ctx->state = LC_STOPPED;
+		return module_lifecycle_report_state(ctx, LC_STOPPED);
+
+	case LC_ERROR:
+	default:
+		return -EPERM;
+	}
+}
+
+#endif /* MODULE_LIFECYCLE_H_ */

inc/protocol_module.h

@@ -1,23 +1,22 @@
 #ifndef BLINKY_PROTOCOL_MODULE_H_
 #define BLINKY_PROTOCOL_MODULE_H_
 
+#include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
 
+#include "proto_common.h"
+
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#define CDC_PROTO_TYPE_HELLO_REQ 0x01U
+int protocol_module_process_message(enum proto_transport transport,
-#define CDC_PROTO_TYPE_HELLO_RSP 0x02U
+				    const uint8_t *req_payload,
-
+				    size_t req_payload_len,
-int protocol_module_process_cdc_packet(uint8_t req_type,
+				    uint8_t *rsp_payload,
-				       const uint8_t *req_payload,
+				    size_t rsp_payload_buf_size,
-				       size_t req_payload_len,
+				    size_t *rsp_payload_len);
-				       uint8_t *rsp_type,
-				       uint8_t *rsp_payload,
-				       size_t rsp_payload_buf_size,
-				       size_t *rsp_payload_len);
 
 #ifdef __cplusplus
 }

inc/theme_color.h

@@ -0,0 +1,24 @@
+#ifndef BLINKY_THEME_COLOR_H_
+#define BLINKY_THEME_COLOR_H_
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define BLINKY_THEME_DEFAULT_R 0x4CU
+#define BLINKY_THEME_DEFAULT_G 0x9EU
+#define BLINKY_THEME_DEFAULT_B 0xF5U
+
+struct theme_rgb {
+	uint8_t r;
+	uint8_t g;
+	uint8_t b;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_THEME_COLOR_H_ */

inc/usb_device_module.h

@@ -1,26 +0,0 @@
-#ifndef BLINKY_USB_DEVICE_MODULE_H_
-#define BLINKY_USB_DEVICE_MODULE_H_
-
-#include <stdbool.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-enum usb_function {
-	USB_FUNCTION_HID = 0x01,
-	USB_FUNCTION_CDC_ACM = 0x02,
-};
-
-enum usb_device_state {
-	USB_DEVICE_STATE_DISCONNECTED,
-	USB_DEVICE_STATE_POWERED,
-	USB_DEVICE_STATE_ACTIVE,
-	USB_DEVICE_STATE_SUSPENDED,
-};
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* BLINKY_USB_DEVICE_MODULE_H_ */

inc/usb_function_hook.h

@@ -0,0 +1,25 @@
+#ifndef BLINKY_USB_FUNCTION_HOOK_H_
+#define BLINKY_USB_FUNCTION_HOOK_H_
+
+#include <zephyr/sys/iterable_sections.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct usb_function_hook {
+	const char *name;
+	int (*pre_stack_init)(void);
+};
+
+#define USB_FUNCTION_HOOK_DEFINE(_name, _pre_stack_init)                      \
+	const STRUCT_SECTION_ITERABLE(usb_function_hook, _name) = {          \
+		.name = STRINGIFY(_name),                                    \
+		.pre_stack_init = (_pre_stack_init),                         \
+	}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_USB_FUNCTION_HOOK_H_ */

prj.conf

@@ -26,7 +26,19 @@ CONFIG_FLASH_MAP=y
 CONFIG_NVS=y
 CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_LOG=y
+CONFIG_LOG_BUFFER_SIZE=16384
+CONFIG_LOG_BACKEND_UART=y
+CONFIG_LOG_BACKEND_SHOW_COLOR=n
+CONFIG_LOG_BACKEND_RTT_OUTPUT_BUFFER_SIZE=16384
 CONFIG_ASSERT=y
+CONFIG_SEGGER_RTT_BUFFER_SIZE_UP=16384
+CONFIG_APP_EVENT_MANAGER_MAX_EVENT_CNT=64
+CONFIG_LED_STRIP=y
+CONFIG_WS2812_STRIP_SPI=y
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+CONFIG_STDOUT_CONSOLE=y
+CONFIG_PRINTK=y
 
 # USB HID next stack
 CONFIG_USB_DEVICE_STACK_NEXT=y
@@ -42,12 +54,17 @@ CONFIG_CDC_ACM_SERIAL_INITIALIZE_AT_BOOT=n
 # BLE
 CONFIG_BT=y
 CONFIG_BT_PERIPHERAL=y
+CONFIG_BT_ZEPHYR_NUS=y
 CONFIG_BT_SMP=y
 CONFIG_BT_BONDABLE=y
 CONFIG_BT_SETTINGS=y
 CONFIG_BT_MAX_CONN=1
 CONFIG_BT_MAX_PAIRED=1
 CONFIG_BT_ATT_TX_COUNT=5
+CONFIG_BT_L2CAP_TX_MTU=65
+CONFIG_BT_BUF_ACL_RX_SIZE=69
+CONFIG_BT_BUF_ACL_TX_SIZE=69
+CONFIG_BT_PERIPHERAL_PREF_TIMEOUT=400
 CONFIG_BT_CONN_CTX=y
 CONFIG_BT_DEVICE_NAME="WH Mini Keyboard"
 CONFIG_BT_DEVICE_APPEARANCE=961
@@ -119,3 +136,6 @@ CONFIG_LV_USE_LABEL=y
 CONFIG_LV_FONT_MONTSERRAT_14=y
 CONFIG_LV_FONT_MONTSERRAT_32=y
 CONFIG_MAIN_STACK_SIZE=4096
+
+CONFIG_USE_SEGGER_RTT=y
+CONFIG_SPEED_OPTIMIZATIONS=y

proto/device_comm.options

@@ -0,0 +1,2 @@
+Bitmap.usage_bitmap max_size:29
+FunctionKeyEvent.usage_bitmap max_size:29

proto/device_comm.proto

@@ -13,9 +13,59 @@ message HelloRsp {
   uint32 capability_flags = 6;
 }
 
+message Bitmap {
+  bytes usage_bitmap = 1;
+}
+
+message FunctionKeyEvent {
+  bytes usage_bitmap = 1;
+}
+
+message LedState {
+  uint32 led_mask = 1;
+}
+
+message TimeSync {
+  uint32 version = 1;
+  uint32 flags = 2;
+  sint32 timezone_min = 3;
+  fixed64 utc_ms = 4;
+  fixed32 accuracy_ms = 5;
+}
+
+message ThemeRgb {
+  uint32 red = 1;
+  uint32 green = 2;
+  uint32 blue = 3;
+}
+
+message Ack {
+  uint32 acked_type = 1;
+}
+
+enum ErrorCode {
+  ERROR_CODE_NONE = 0;
+  ERROR_CODE_UNKNOWN_TYPE = 1;
+  ERROR_CODE_INVALID_LENGTH = 2;
+  ERROR_CODE_INVALID_PARAM = 3;
+  ERROR_CODE_NOT_READY = 4;
+}
+
+message Error {
+  uint32 error_type = 1;
+  ErrorCode error_code = 2;
+}
+
 message CdcPacketBody {
   oneof body {
     HelloReq hello_req = 1;
     HelloRsp hello_rsp = 2;
+    Bitmap bitmap = 3;
+    FunctionKeyEvent function_key_event = 4;
+    LedState led_state = 5;
+    TimeSync time_sync = 6;
+    ThemeRgb theme_rgb = 7;
+    Ack ack = 8;
+    Error error = 9;
   }
 }

src/battery_module.c

@@ -18,6 +18,7 @@
 #include <zephyr/pm/device.h>
 
 #include "bat_state_event.h"
+#include "module_lifecycle.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
@@ -32,17 +33,43 @@ BUILD_ASSERT(DT_NODE_HAS_STATUS(VBATT_NODE, okay),
 BUILD_ASSERT(DT_NODE_HAS_STATUS(IP5306_NODE, okay),
 	     "Missing ip5306 node in devicetree");
 
-static const struct device *const vbatt_dev = DEVICE_DT_GET(VBATT_NODE);
+struct battery_module_ctx {
-static const struct device *const ip5306_dev = DEVICE_DT_GET(IP5306_NODE);
+	struct module_lifecycle_ctx lc;
-static struct k_work_delayable battery_sample_work;
+	const struct device *vbatt_dev;
-static struct {
+	const struct device *ip5306_dev;
-	bool valid;
+	struct k_work_delayable battery_sample_work;
-	uint8_t soc;
+	struct {
-	bool charging;
+		bool valid;
-	bool full;
+		uint8_t soc;
-} last_bat_state;
+		bool charging;
-static bool initialized;
+		bool full;
-static bool running;
+	} last_bat_state;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct battery_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.vbatt_dev = DEVICE_DT_GET(VBATT_NODE),
+	.ip5306_dev = DEVICE_DT_GET(IP5306_NODE),
+};
 
 static int sensor_value_to_mv(const struct sensor_value *value)
 {
@@ -53,7 +80,7 @@ static int measurement_enable(bool enable)
 {
 	enum pm_device_action action = enable ? PM_DEVICE_ACTION_RESUME
 					      : PM_DEVICE_ACTION_SUSPEND;
-	int err = pm_device_action_run(vbatt_dev, action);
+	int err = pm_device_action_run(ctx.vbatt_dev, action);
 
 	if (err && (err != -EALREADY) && (err != -ENOTSUP)) {
 		LOG_ERR("Cannot %s vbatt sensor (%d)", enable ? "resume" : "suspend", err);
@@ -81,30 +108,6 @@ static uint8_t battery_soc_from_mv(int voltage_mv)
 	return (uint8_t)(bucket * 10);
 }
 
-static void submit_bat_state_event(uint8_t soc, bool charging, bool full)
-{
-	struct bat_state_event *event;
-
-	if (last_bat_state.valid &&
-	    (last_bat_state.soc == soc) &&
-	    (last_bat_state.charging == charging) &&
-	    (last_bat_state.full == full)) {
-		return;
-	}
-
-	last_bat_state.valid = true;
-	last_bat_state.soc = soc;
-	last_bat_state.charging = charging;
-	last_bat_state.full = full;
-
-	event = new_bat_state_event();
-	event->soc = soc;
-	event->charging = charging;
-	event->full = full;
-
-	APP_EVENT_SUBMIT(event);
-}
-
 static void battery_sample_fn(struct k_work *work)
 {
 	struct ip5306_status pmic_status;
@@ -114,69 +117,78 @@ static void battery_sample_fn(struct k_work *work)
 
 	ARG_UNUSED(work);
 
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
 		return;
 	}
 
-	err = sensor_sample_fetch(vbatt_dev);
+	err = sensor_sample_fetch(ctx.vbatt_dev);
 	if (err) {
 		LOG_WRN("Battery sample fetch failed (%d)", err);
 		goto reschedule;
 	}
 
-	err = sensor_channel_get(vbatt_dev, SENSOR_CHAN_VOLTAGE, &voltage);
+	err = sensor_channel_get(ctx.vbatt_dev, SENSOR_CHAN_VOLTAGE, &voltage);
 	if (err) {
 		LOG_WRN("Battery channel get failed (%d)", err);
 		goto reschedule;
 	}
 
-	err = ip5306_get_status(ip5306_dev, &pmic_status);
+	err = ip5306_get_status(ctx.ip5306_dev, &pmic_status);
 	if (err) {
 		LOG_WRN("IP5306 status read failed (%d)", err);
 		goto reschedule;
 	}
 
 	voltage_mv = sensor_value_to_mv(&voltage);
-	submit_bat_state_event(battery_soc_from_mv(voltage_mv),
+	uint8_t soc = battery_soc_from_mv(voltage_mv);
-			       pmic_status.charging,
+
-			       pmic_status.full);
+	if (!ctx.last_bat_state.valid ||
+	    (ctx.last_bat_state.soc != soc) ||
+	    (ctx.last_bat_state.charging != pmic_status.charging) ||
+	    (ctx.last_bat_state.full != pmic_status.full)) {
+		ctx.last_bat_state.valid = true;
+		ctx.last_bat_state.soc = soc;
+		ctx.last_bat_state.charging = pmic_status.charging;
+		ctx.last_bat_state.full = pmic_status.full;
+		submit_bat_state_event(soc, pmic_status.charging, pmic_status.full);
+	}
 
 reschedule:
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
-		k_work_reschedule(&battery_sample_work, BATTERY_SAMPLE_INTERVAL);
+		k_work_reschedule(&ctx.battery_sample_work, BATTERY_SAMPLE_INTERVAL);
 	}
 }
 
-static int module_init(void)
+static int do_init(void)
 {
-	if (!device_is_ready(vbatt_dev)) {
+	if (!device_is_ready(ctx.vbatt_dev)) {
 		LOG_ERR("vbatt device not ready");
 		return -ENODEV;
 	}
 
-	if (!device_is_ready(ip5306_dev)) {
+	if (!device_is_ready(ctx.ip5306_dev)) {
 		LOG_ERR("ip5306 device not ready");
 		return -ENODEV;
 	}
 
-	int err = ip5306_init(ip5306_dev);
+	int err = ip5306_init(ctx.ip5306_dev);
 	if (err) {
 		LOG_ERR("ip5306 init failed (%d)", err);
 		return err;
 	}
 
-	k_work_init_delayable(&battery_sample_work, battery_sample_fn);
+	k_work_init_delayable(&ctx.battery_sample_work, battery_sample_fn);
-	memset(&last_bat_state, 0, sizeof(last_bat_state));
+	memset(&ctx.last_bat_state, 0, sizeof(ctx.last_bat_state));
 	power_manager_restrict(MODULE_IDX(MODULE), POWER_MANAGER_LEVEL_SUSPENDED);
 
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	int err;
 
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
 		return 0;
 	}
 
@@ -185,21 +197,21 @@ static int module_start(void)
 		return err;
 	}
 
-	running = true;
+	k_work_reschedule(&ctx.battery_sample_work, K_NO_WAIT);
-	k_work_reschedule(&battery_sample_work, K_NO_WAIT);
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
-		return;
+		return 0;
 	}
 
-	(void)k_work_cancel_delayable(&battery_sample_work);
+	(void)k_work_cancel_delayable(&ctx.battery_sample_work);
 	(void)measurement_enable(false);
-	running = false;
+
+	return 0;
 }
 
 static bool app_event_handler(const struct app_event_header *aeh)
@@ -208,47 +220,23 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		const struct module_state_event *event = cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			module_pause();
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;

src/ble_adv_ctrl_module.c

@@ -1,115 +0,0 @@
-#include <stdbool.h>
-
-#include <app_event_manager.h>
-
-#define MODULE ble_adv_ctrl_module
-#include <caf/events/module_state_event.h>
-#include <caf/events/module_suspend_event.h>
-
-#include <zephyr/logging/log.h>
-
-#include "mode_switch_event.h"
-
-LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
-
-static bool initialized;
-static bool running;
-static bool ble_adv_suspended = true;
-
-static void broadcast_ble_adv_req(bool suspend)
-{
-	if (suspend) {
-		struct module_suspend_req_event *event = new_module_suspend_req_event();
-
-		event->sink_module_id = MODULE_ID(ble_adv);
-		event->src_module_id = MODULE_ID(MODULE);
-		APP_EVENT_SUBMIT(event);
-	} else {
-		struct module_resume_req_event *event = new_module_resume_req_event();
-
-		event->sink_module_id = MODULE_ID(ble_adv);
-		event->src_module_id = MODULE_ID(MODULE);
-		APP_EVENT_SUBMIT(event);
-	}
-}
-
-static int module_init(void)
-{
-	ble_adv_suspended = true;
-
-	return 0;
-}
-
-static int module_start(void)
-{
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-
-	return 0;
-}
-
-static void module_pause(void)
-{
-	running = false;
-}
-
-static bool handle_mode_switch_event(const struct mode_switch_event *event)
-{
-	bool should_suspend;
-
-	if (!running) {
-		return false;
-	}
-
-	should_suspend = (event->mode != MODE_SWITCH_BLE);
-
-	if (should_suspend != ble_adv_suspended) {
-		ble_adv_suspended = should_suspend;
-		broadcast_ble_adv_req(should_suspend);
-	}
-
-	return false;
-}
-
-static bool app_event_handler(const struct app_event_header *aeh)
-{
-	if (is_mode_switch_event(aeh)) {
-		return handle_mode_switch_event(cast_mode_switch_event(aeh));
-	}
-
-	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
-
-		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	return false;
-}
-
-APP_EVENT_LISTENER(MODULE, app_event_handler);
-APP_EVENT_SUBSCRIBE(MODULE, mode_switch_event);
-APP_EVENT_SUBSCRIBE(MODULE, module_state_event);

src/ble_bas_module.c

@@ -11,34 +11,54 @@
 #include <zephyr/logging/log.h>
 
 #include "bat_state_event.h"
+#include "module_lifecycle.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
-static uint8_t current_soc = 100U;
+struct ble_bas_module_ctx {
-static bool initialized;
+	struct module_lifecycle_ctx lc;
-static bool running;
+	uint8_t current_soc;
-static bool ble_ready;
+	bool ble_ready;
+};
 
-static int module_init(void)
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_NONE,
+	.stopped_state = MODULE_STATE_OFF,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct ble_bas_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.current_soc = 100U,
+};
+
+static int do_init(void)
 {
 	return 0;
 }
 
-static int module_start(void)
+static int bas_update_level(void)
 {
-	int err;
+	int err = bt_bas_set_battery_level(ctx.current_soc);
 
-	if (running) {
+	if ((err == -EAGAIN) || (err == -ENOTCONN)) {
+		LOG_INF("BAS notify deferred (%d)", err);
 		return 0;
 	}
 
-	running = true;
-
-	if (!ble_ready) {
-		return 0;
-	}
-
-	err = bt_bas_set_battery_level(current_soc);
 	if (err) {
 		LOG_WRN("bt_bas_set_battery_level failed (%d)", err);
 		return err;
@@ -47,21 +67,30 @@ static int module_start(void)
 	return 0;
 }
 
-static void module_pause(void)
+static int do_start(void)
 {
-	running = false;
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	if (!ctx.ble_ready) {
+		return 0;
+	}
+
+	return bas_update_level();
+}
+
+static int do_stop(void)
+{
+	return 0;
 }
 
 static bool handle_bat_state_event(const struct bat_state_event *event)
 {
-	current_soc = event->soc;
+	ctx.current_soc = event->soc;
 
-	if (running && ble_ready) {
+	if (module_lifecycle_is_running(&ctx.lc) && ctx.ble_ready) {
-		int err = bt_bas_set_battery_level(current_soc);
+		(void)bas_update_level();
-
-		if (err) {
-			LOG_WRN("bt_bas_set_battery_level failed (%d)", err);
-		}
 	}
 
 	return false;
@@ -75,38 +104,18 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 	if (is_module_state_event(aeh)) {
 		const struct module_state_event *event = cast_module_state_event(aeh);
-		int err;
-
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			if (!initialized) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			}
 
 			return false;
 		}
 
 		if (check_state(event, MODULE_ID(ble_state), MODULE_STATE_READY)) {
-			ble_ready = true;
+			ctx.ble_ready = true;
 
-			if (running) {
+			if (module_lifecycle_is_running(&ctx.lc)) {
-				err = bt_bas_set_battery_level(current_soc);
+				(void)bas_update_level();
-				if (err) {
-					LOG_WRN("bt_bas_set_battery_level failed (%d)", err);
-				}
 			}
-
-			module_set_state(MODULE_STATE_READY);
 			return false;
 		}
 

src/ble_hid_module.c

@@ -7,17 +7,17 @@
 
 #define MODULE ble_hid_module
 #include <caf/events/module_state_event.h>
-#include <caf/events/power_event.h>
 
 #include <caf/events/ble_common_event.h>
 #include <bluetooth/services/hids.h>
 #include <zephyr/logging/log.h>
 
 #include "hid_led_event.h"
+#include "hid_channel_state_event.h"
 #include "hid_report_sent_event.h"
-#include "hid_transport_state_event.h"
 #include "hid_tx_report_event.h"
 #include "keyboard_core.h"
+#include "module_lifecycle.h"
 #include "set_protocol_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
@@ -40,15 +40,40 @@ BT_HIDS_DEF(hids_obj,
 	    KEYBOARD_CONSUMER_REPORT_SIZE,
 	    BLE_HID_KEYS_LED_REPORT_SIZE);
 
-static struct bt_conn *active_conn;
+struct ble_hid_module_ctx {
-static struct in_flight_report in_flight;
+	struct module_lifecycle_ctx lc;
-static enum keyboard_protocol_mode protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
+	struct bt_conn *active_conn;
-static bool initialized;
+	struct in_flight_report in_flight;
-static bool running;
+	enum keyboard_protocol_mode protocol_mode;
-static bool secured;
+	bool secured;
-static bool keyboard_report_notify_enabled;
+	bool keyboard_report_notify_enabled;
-static bool consumer_report_notify_enabled;
+	bool consumer_report_notify_enabled;
-static bool boot_keyboard_notify_enabled;
+	bool boot_keyboard_notify_enabled;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_NONE,
+	.stopped_state = MODULE_STATE_OFF,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct ble_hid_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+};
 
 static const uint8_t hid_report_desc[] = {
 	0x05, 0x01,             /* Usage Page (Generic Desktop) */
@@ -98,54 +123,27 @@ static const uint8_t hid_report_desc[] = {
 	0xC0                    /* End Collection */
 };
 
-static void submit_set_protocol_event(void)
+static void submit_ble_transport_state_event(void)
 {
-	struct set_protocol_event *event = new_set_protocol_event();
+	bool ready = module_lifecycle_is_running(&ctx.lc) &&
+		     ctx.secured && (ctx.active_conn != NULL);
+	uint8_t report_ready_bm = 0U;
 
-	event->transport = HID_TRANSPORT_BLE;
+	if (ready && ((ctx.protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT) ?
-	event->protocol_mode = protocol_mode;
+			      ctx.boot_keyboard_notify_enabled :
-	APP_EVENT_SUBMIT(event);
+			      ctx.keyboard_report_notify_enabled)) {
-}
+		report_ready_bm |= BIT(KEYBOARD_REPORT_TYPE_KEYS);
+	}
 
-static void submit_hid_led_event(uint8_t led_bm)
+	if (ready && (ctx.protocol_mode == KEYBOARD_PROTOCOL_MODE_REPORT) &&
-{
+	    ctx.consumer_report_notify_enabled) {
-	struct hid_led_event *event = new_hid_led_event();
+		report_ready_bm |= BIT(KEYBOARD_REPORT_TYPE_CONSUMER);
+	}
 
-	event->transport = HID_TRANSPORT_BLE;
+	submit_hid_channel_state_event(
-	event->led_bm = led_bm;
+		HID_SEND_CH_BLE_SHARED,
-	APP_EVENT_SUBMIT(event);
+		report_ready_bm,
-}
+		ctx.protocol_mode);
-
-static void submit_transport_state_event(void)
-{
-	struct hid_transport_state_event *event = new_hid_transport_state_event();
-	bool ready = running && secured && (active_conn != NULL);
-
-	event->transport = HID_TRANSPORT_BLE;
-	event->ready = ready;
-	event->protocol_mode = protocol_mode;
-	event->keys_ready = ready &&
-			    ((protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT) ?
-				     boot_keyboard_notify_enabled :
-				     keyboard_report_notify_enabled);
-	event->consumer_ready = ready &&
-				(protocol_mode == KEYBOARD_PROTOCOL_MODE_REPORT) &&
-				consumer_report_notify_enabled;
-
-	APP_EVENT_SUBMIT(event);
-}
-
-static void submit_hid_report_sent_event(enum keyboard_report_type report_type,
-					 uint16_t sequence, bool error)
-{
-	struct hid_report_sent_event *event = new_hid_report_sent_event();
-
-	event->transport = HID_TRANSPORT_BLE;
-	event->report_type = report_type;
-	event->sequence = sequence;
-	event->error = error;
-
-	APP_EVENT_SUBMIT(event);
 }
 
 static void input_report_notify_handler(uint8_t report_id, enum bt_hids_notify_evt evt)
@@ -153,18 +151,18 @@ static void input_report_notify_handler(uint8_t report_id, enum bt_hids_notify_e
 	bool enabled = (evt == BT_HIDS_CCCD_EVT_NOTIFY_ENABLED);
 
 	if (report_id == BLE_HID_KEYS_REPORT_ID) {
-		keyboard_report_notify_enabled = enabled;
+		ctx.keyboard_report_notify_enabled = enabled;
 	} else if (report_id == BLE_HID_CONSUMER_REPORT_ID) {
-		consumer_report_notify_enabled = enabled;
+		ctx.consumer_report_notify_enabled = enabled;
 	}
 
-	submit_transport_state_event();
+	submit_ble_transport_state_event();
 }
 
 static void boot_keyboard_notify_handler(enum bt_hids_notify_evt evt)
 {
-	boot_keyboard_notify_enabled = (evt == BT_HIDS_CCCD_EVT_NOTIFY_ENABLED);
+	ctx.boot_keyboard_notify_enabled = (evt == BT_HIDS_CCCD_EVT_NOTIFY_ENABLED);
-	submit_transport_state_event();
+	submit_ble_transport_state_event();
 }
 
 static void hid_report_complete_cb(struct bt_conn *conn, void *user_data)
@@ -172,12 +170,14 @@ static void hid_report_complete_cb(struct bt_conn *conn, void *user_data)
 	ARG_UNUSED(conn);
 	ARG_UNUSED(user_data);
 
-	if (!in_flight.active) {
+	if (!ctx.in_flight.active) {
 		return;
 	}
 
-	submit_hid_report_sent_event(in_flight.report_type, in_flight.sequence, false);
+	submit_hid_report_sent_event(HID_SEND_CH_BLE_SHARED,
-	in_flight.active = false;
+				     ctx.in_flight.report_type,
+				     ctx.in_flight.sequence, false);
+	ctx.in_flight.active = false;
 }
 
 static void keyboard_led_report_common(struct bt_hids_rep *rep, bool write)
@@ -186,7 +186,7 @@ static void keyboard_led_report_common(struct bt_hids_rep *rep, bool write)
 		return;
 	}
 
-	submit_hid_led_event(rep->data[0]);
+	submit_hid_led_event(HID_TRANSPORT_BLE, rep->data[0]);
 }
 
 static void keyboard_led_report_handler(struct bt_hids_rep *rep,
@@ -213,22 +213,22 @@ static void pm_evt_handler(enum bt_hids_pm_evt evt, struct bt_conn *conn)
 
 	switch (evt) {
 	case BT_HIDS_PM_EVT_BOOT_MODE_ENTERED:
-		protocol_mode = KEYBOARD_PROTOCOL_MODE_BOOT;
+		ctx.protocol_mode = KEYBOARD_PROTOCOL_MODE_BOOT;
 		break;
 
 	case BT_HIDS_PM_EVT_REPORT_MODE_ENTERED:
-		protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
+		ctx.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
 		break;
 
 	default:
 		return;
 	}
 
-	submit_set_protocol_event();
+	submit_set_protocol_event(HID_TRANSPORT_BLE, ctx.protocol_mode);
-	submit_transport_state_event();
+	submit_ble_transport_state_event();
 }
 
-static int module_init(void)
+static int do_init(void)
 {
 	struct bt_hids_init_param hids_init_param = { 0 };
 	struct bt_hids_inp_rep *input_report;
@@ -265,38 +265,38 @@ static int module_init(void)
 	return bt_hids_init(&hids_obj, &hids_init_param);
 }
 
-static int module_start(void)
+static int do_start(void)
 {
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
 		return 0;
 	}
 
-	running = true;
+	submit_ble_transport_state_event();
-	submit_transport_state_event();
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
-		return;
+		return 0;
 	}
 
-	in_flight.active = false;
+	ctx.in_flight.active = false;
-	running = false;
+	submit_ble_transport_state_event();
-	submit_transport_state_event();
+
+	return 0;
 }
 
 static void reset_connection_state(void)
 {
-	active_conn = NULL;
+	ctx.active_conn = NULL;
-	secured = false;
+	ctx.secured = false;
-	keyboard_report_notify_enabled = false;
+	ctx.keyboard_report_notify_enabled = false;
-	consumer_report_notify_enabled = false;
+	ctx.consumer_report_notify_enabled = false;
-	boot_keyboard_notify_enabled = false;
+	ctx.boot_keyboard_notify_enabled = false;
-	protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
+	ctx.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
-	in_flight.active = false;
+	ctx.in_flight.active = false;
 }
 
 static bool handle_ble_peer_event(const struct ble_peer_event *event)
@@ -305,31 +305,31 @@ static bool handle_ble_peer_event(const struct ble_peer_event *event)
 
 	switch (event->state) {
 	case PEER_STATE_CONNECTED:
-		if (active_conn != NULL) {
+		if (ctx.active_conn != NULL) {
 			return false;
 		}
 
-		active_conn = event->id;
+		ctx.active_conn = event->id;
-		protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
+		ctx.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
-		submit_set_protocol_event();
+		submit_set_protocol_event(HID_TRANSPORT_BLE, ctx.protocol_mode);
 		err = bt_hids_connected(&hids_obj, event->id);
 		if (err) {
 			LOG_ERR("bt_hids_connected failed (%d)", err);
 		}
-		submit_transport_state_event();
+		submit_ble_transport_state_event();
 		return false;
 
 	case PEER_STATE_SECURED:
-		if (active_conn != event->id) {
+		if (ctx.active_conn != event->id) {
 			return false;
 		}
 
-		secured = true;
+		ctx.secured = true;
-		submit_transport_state_event();
+		submit_ble_transport_state_event();
 		return false;
 
 	case PEER_STATE_DISCONNECTED:
-		if (active_conn != event->id) {
+		if (ctx.active_conn != event->id) {
 			return false;
 		}
 
@@ -339,7 +339,7 @@ static bool handle_ble_peer_event(const struct ble_peer_event *event)
 		}
 
 		reset_connection_state();
-		submit_transport_state_event();
+		submit_ble_transport_state_event();
 		return false;
 
 	default:
@@ -351,33 +351,35 @@ static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
 {
 	int err;
 
-	if (!running || (event->transport != HID_TRANSPORT_BLE) || in_flight.active) {
+	if (!module_lifecycle_is_running(&ctx.lc) ||
+	    (event->channel != HID_SEND_CH_BLE_SHARED) ||
+	    ctx.in_flight.active) {
 		return false;
 	}
 
-	if ((active_conn == NULL) || !secured) {
+	if ((ctx.active_conn == NULL) || !ctx.secured) {
 		return false;
 	}
 
 	if (event->report_type == KEYBOARD_REPORT_TYPE_KEYS) {
-		if (event->protocol_mode != protocol_mode) {
+		if (event->protocol_mode != ctx.protocol_mode) {
 			LOG_WRN("Drop BLE keys report due to protocol mismatch");
 			return false;
 		}
 
-		in_flight.active = true;
+		ctx.in_flight.active = true;
-		in_flight.report_type = event->report_type;
+		ctx.in_flight.report_type = event->report_type;
-		in_flight.sequence = event->sequence;
+		ctx.in_flight.sequence = event->sequence;
 
-		if (protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT) {
+		if (ctx.protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT) {
 			err = bt_hids_boot_kb_inp_rep_send(&hids_obj,
-							 active_conn,
+							 ctx.active_conn,
 							 event->dyndata.data,
 							 (uint8_t)event->dyndata.size,
 							 hid_report_complete_cb);
 		} else {
 			err = bt_hids_inp_rep_send(&hids_obj,
-						    active_conn,
+						    ctx.active_conn,
 						    BLE_HID_KEYS_REPORT_IDX,
 						    event->dyndata.data,
 						    (uint8_t)event->dyndata.size,
@@ -385,9 +387,10 @@ static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
 		}
 
 		if (err) {
-			in_flight.active = false;
+			ctx.in_flight.active = false;
 			LOG_WRN("BLE keyboard report submit failed (%d)", err);
-			submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_KEYS,
+			submit_hid_report_sent_event(HID_SEND_CH_BLE_SHARED,
+						     KEYBOARD_REPORT_TYPE_KEYS,
 						     event->sequence, true);
 		}
 
@@ -395,25 +398,26 @@ static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
 	}
 
 	if (event->report_type == KEYBOARD_REPORT_TYPE_CONSUMER) {
-		if (protocol_mode != KEYBOARD_PROTOCOL_MODE_REPORT) {
+		if (ctx.protocol_mode != KEYBOARD_PROTOCOL_MODE_REPORT) {
 			LOG_WRN("Drop BLE consumer report in boot mode");
 			return false;
 		}
 
-		in_flight.active = true;
+		ctx.in_flight.active = true;
-		in_flight.report_type = event->report_type;
+		ctx.in_flight.report_type = event->report_type;
-		in_flight.sequence = event->sequence;
+		ctx.in_flight.sequence = event->sequence;
 
 		err = bt_hids_inp_rep_send(&hids_obj,
-					    active_conn,
+					    ctx.active_conn,
 					    BLE_HID_CONSUMER_REPORT_IDX,
 					    event->dyndata.data,
 					    (uint8_t)event->dyndata.size,
 					    hid_report_complete_cb);
 		if (err) {
-			in_flight.active = false;
+			ctx.in_flight.active = false;
 			LOG_WRN("BLE consumer report submit failed (%d)", err);
-			submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_CONSUMER,
+			submit_hid_report_sent_event(HID_SEND_CH_BLE_SHARED,
+						     KEYBOARD_REPORT_TYPE_CONSUMER,
 						     event->sequence, true);
 		}
 	}
@@ -433,48 +437,9 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 	if (is_module_state_event(aeh)) {
 		const struct module_state_event *event = cast_module_state_event(aeh);
-		int err;
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			if (!initialized) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	if (is_power_down_event(aeh)) {
-		if (initialized) {
-			module_pause();
-			module_set_state(MODULE_STATE_STANDBY);
-		}
-
-		return false;
-	}
-
-	if (is_wake_up_event(aeh)) {
-		if (initialized) {
-			int err = module_start();
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
@@ -487,5 +452,3 @@ APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, hid_tx_report_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, ble_peer_event);
-APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
-APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/ble_nus_module.c

@@ -0,0 +1,319 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <app_event_manager.h>
+
+#define MODULE ble_nus_module
+#include <caf/events/module_state_event.h>
+
+#include <caf/events/ble_common_event.h>
+#include <zephyr/bluetooth/conn.h>
+#include <zephyr/bluetooth/services/nus.h>
+#include <zephyr/logging/log.h>
+
+#include "module_lifecycle.h"
+#include "proto_rx_event.h"
+#include "proto_transport_state_event.h"
+#include "proto_tx_event.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+enum ble_nus_business_state {
+	BLE_NUS_STACK_OFFLINE = 0,
+	BLE_NUS_IDLE,
+	BLE_NUS_WAIT_NOTIFY,
+	BLE_NUS_SESSION_READY,
+};
+
+struct ble_nus_ctx {
+	struct module_lifecycle_ctx lc;
+	enum ble_nus_business_state business;
+	struct bt_conn *active_conn;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_NONE,
+	.stopped_state = MODULE_STATE_OFF,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct ble_nus_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.business = BLE_NUS_STACK_OFFLINE,
+	.active_conn = NULL,
+};
+
+static const char *business_state_name(enum ble_nus_business_state state)
+{
+	switch (state) {
+	case BLE_NUS_STACK_OFFLINE:
+		return "STACK_OFFLINE";
+	case BLE_NUS_IDLE:
+		return "IDLE";
+	case BLE_NUS_WAIT_NOTIFY:
+		return "WAIT_NOTIFY";
+	case BLE_NUS_SESSION_READY:
+		return "SESSION_READY";
+	default:
+		return "?";
+	}
+}
+
+static const char *link_state_name(enum proto_transport_link_state state)
+{
+	switch (state) {
+	case PROTO_TRANSPORT_LINK_DOWN:
+		return "DOWN";
+	case PROTO_TRANSPORT_LINK_READY:
+		return "READY";
+	default:
+		return "?";
+	}
+}
+
+static bool lifecycle_is_ready(void)
+{
+	return module_lifecycle_is_running(&ctx.lc);
+}
+
+static enum proto_transport_link_state transport_link_state_get(void)
+{
+	return (lifecycle_is_ready() &&
+		(ctx.business == BLE_NUS_SESSION_READY)) ?
+		       PROTO_TRANSPORT_LINK_READY :
+		       PROTO_TRANSPORT_LINK_DOWN;
+}
+
+static void state_reconcile(enum module_lifecycle old_lifecycle,
+			    enum ble_nus_business_state old_business)
+{
+	enum proto_transport_link_state old_link =
+		((old_lifecycle == LC_RUNNING) &&
+		 (old_business == BLE_NUS_SESSION_READY)) ?
+			PROTO_TRANSPORT_LINK_READY :
+			PROTO_TRANSPORT_LINK_DOWN;
+	enum proto_transport_link_state new_link = transport_link_state_get();
+
+	if (old_link != new_link) {
+		submit_proto_transport_state_event(PROTO_TRANSPORT_BLE_NUS,
+						   new_link);
+	}
+}
+
+static void business_state_set(enum ble_nus_business_state new_state)
+{
+	enum module_lifecycle old_lifecycle = ctx.lc.state;
+	enum ble_nus_business_state old_business = ctx.business;
+
+	if (ctx.business == new_state) {
+		return;
+	}
+
+	LOG_INF("BLE NUS business %s -> %s",
+		business_state_name(ctx.business),
+		business_state_name(new_state));
+	ctx.business = new_state;
+	state_reconcile(old_lifecycle, old_business);
+}
+
+static void business_state_set_stack_ready(void)
+{
+	if (ctx.business == BLE_NUS_STACK_OFFLINE) {
+		business_state_set(BLE_NUS_IDLE);
+	}
+}
+
+static void business_state_set_from_notify(bool enabled)
+{
+	if (ctx.business == BLE_NUS_STACK_OFFLINE) {
+		return;
+	}
+
+	if (ctx.active_conn == NULL) {
+		return;
+	}
+
+	business_state_set(enabled ? BLE_NUS_SESSION_READY :
+				      BLE_NUS_WAIT_NOTIFY);
+}
+
+static void notif_enabled(bool enabled, void *ctx_ptr)
+{
+	ARG_UNUSED(ctx_ptr);
+
+	LOG_INF("BLE NUS TX notify %s", enabled ? "enabled" : "disabled");
+	business_state_set_from_notify(enabled);
+}
+
+static void received(struct bt_conn *conn, const void *data, uint16_t len,
+		     void *ctx_ptr)
+{
+	ARG_UNUSED(ctx_ptr);
+
+	if (!lifecycle_is_ready() || (ctx.business == BLE_NUS_STACK_OFFLINE) ||
+	    (conn != ctx.active_conn)) {
+		LOG_WRN("BLE NUS drop RX len:%u lc:%s business:%s active_conn:%p conn:%p link:%s",
+			len, module_lifecycle_name(ctx.lc.state),
+			business_state_name(ctx.business),
+			(void *)ctx.active_conn, (void *)conn,
+			link_state_name(transport_link_state_get()));
+		return;
+	}
+
+	(void)submit_proto_rx_event(PROTO_TRANSPORT_BLE_NUS, data, len);
+}
+
+static struct bt_nus_cb nus_listener = {
+	.notif_enabled = notif_enabled,
+	.received = received,
+};
+
+static void reset_connection_state(void)
+{
+	ctx.active_conn = NULL;
+
+	if (ctx.business != BLE_NUS_STACK_OFFLINE) {
+		business_state_set(BLE_NUS_IDLE);
+	}
+}
+
+static int do_init(void)
+{
+	int err;
+
+	err = bt_nus_cb_register(&nus_listener, NULL);
+	if (err) {
+		LOG_ERR("bt_nus_cb_register failed (%d)", err);
+		return err;
+	}
+
+	ctx.business = BLE_NUS_STACK_OFFLINE;
+	ctx.active_conn = NULL;
+
+	return 0;
+}
+
+static int do_start(void)
+{
+	return 0;
+}
+
+static int do_stop(void)
+{
+	return 0;
+}
+
+static int apply_lifecycle(enum module_lifecycle target)
+{
+	enum module_lifecycle old_lifecycle = ctx.lc.state;
+	enum ble_nus_business_state old_business = ctx.business;
+	int err = module_set_lifecycle(&ctx.lc, target);
+
+	if (!err) {
+		state_reconcile(old_lifecycle, old_business);
+	} else {
+		LOG_WRN("BLE NUS lifecycle change failed target:%s err:%d",
+			module_lifecycle_name(target), err);
+	}
+
+	return err;
+}
+
+static bool handle_ble_peer_event(const struct ble_peer_event *event)
+{
+	switch (event->state) {
+	case PEER_STATE_CONNECTED:
+		if (ctx.active_conn != NULL) {
+			return false;
+		}
+
+		ctx.active_conn = event->id;
+		if (ctx.business != BLE_NUS_STACK_OFFLINE) {
+			business_state_set(BLE_NUS_WAIT_NOTIFY);
+		}
+		return false;
+
+	case PEER_STATE_DISCONNECTED:
+		if (ctx.active_conn != event->id) {
+			return false;
+		}
+
+		reset_connection_state();
+		return false;
+
+	default:
+		return false;
+	}
+}
+
+static bool handle_proto_tx_event(const struct proto_tx_event *event)
+{
+	int err;
+
+	if (event->transport != PROTO_TRANSPORT_BLE_NUS) {
+		return false;
+	}
+
+	if ((transport_link_state_get() != PROTO_TRANSPORT_LINK_READY) ||
+	    (ctx.active_conn == NULL)) {
+		return false;
+	}
+
+	err = bt_nus_send(ctx.active_conn, event->dyndata.data,
+			 (uint16_t)event->dyndata.size);
+	if (err) {
+		LOG_WRN("bt_nus_send failed (%d)", err);
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_proto_tx_event(aeh)) {
+		return handle_proto_tx_event(cast_proto_tx_event(aeh));
+	}
+
+	if (is_ble_peer_event(aeh)) {
+		return handle_ble_peer_event(cast_ble_peer_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event =
+			cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)apply_lifecycle(LC_RUNNING);
+			return false;
+		}
+
+		if (check_state(event, MODULE_ID(ble_state), MODULE_STATE_READY)) {
+			business_state_set_stack_ready();
+
+			return false;
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, proto_tx_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, ble_peer_event);

src/cdc_wrapper_module.c

@@ -1,275 +0,0 @@
-#include <errno.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-
-#include <app_event_manager.h>
-
-#define MODULE cdc_wrapper_module
-#include <caf/events/module_state_event.h>
-#include <caf/events/power_event.h>
-
-#include <zephyr/logging/log.h>
-
-#include "protocol_module.h"
-#include "usb_cdc_rx_event.h"
-#include "usb_cdc_tx_event.h"
-
-LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
-
-#define CDC_WRAPPER_HEAD1 0xAAU
-#define CDC_WRAPPER_HEAD2 0x55U
-#define CDC_WRAPPER_MAX_PAYLOAD_LEN 64U
-#define CDC_WRAPPER_MAX_FRAME_LEN (2U + 1U + 1U + CDC_WRAPPER_MAX_PAYLOAD_LEN + 1U)
-
-enum frame_parse_state {
-	FRAME_PARSE_HEAD1,
-	FRAME_PARSE_HEAD2,
-	FRAME_PARSE_LEN,
-	FRAME_PARSE_TYPE,
-	FRAME_PARSE_PAYLOAD,
-	FRAME_PARSE_CHECKSUM,
-};
-
-struct cdc_frame_parser {
-	enum frame_parse_state state;
-	uint8_t len;
-	uint8_t type;
-	uint8_t checksum;
-	uint8_t payload[CDC_WRAPPER_MAX_PAYLOAD_LEN];
-	size_t payload_pos;
-};
-
-static bool initialized;
-static bool running;
-static struct cdc_frame_parser parser;
-
-static void parser_reset(void)
-{
-	parser.state = FRAME_PARSE_HEAD1;
-	parser.len = 0U;
-	parser.type = 0U;
-	parser.checksum = 0U;
-	parser.payload_pos = 0U;
-}
-
-static uint8_t frame_checksum(uint8_t len, uint8_t type,
-			      const uint8_t *payload, size_t payload_len)
-{
-	uint8_t checksum = CDC_WRAPPER_HEAD1 ^ CDC_WRAPPER_HEAD2 ^ len ^ type;
-
-	for (size_t i = 0; i < payload_len; i++) {
-		checksum ^= payload[i];
-	}
-
-	return checksum;
-}
-
-static void submit_tx_frame(uint8_t type, const uint8_t *payload, size_t payload_len)
-{
-	struct usb_cdc_tx_event *event;
-	size_t frame_len = 2U + 1U + 1U + payload_len + 1U;
-
-	event = new_usb_cdc_tx_event(frame_len);
-	event->dyndata.data[0] = CDC_WRAPPER_HEAD1;
-	event->dyndata.data[1] = CDC_WRAPPER_HEAD2;
-	event->dyndata.data[2] = (uint8_t)payload_len;
-	event->dyndata.data[3] = type;
-	memcpy(&event->dyndata.data[4], payload, payload_len);
-	event->dyndata.data[4U + payload_len] =
-		frame_checksum((uint8_t)payload_len, type, payload, payload_len);
-	APP_EVENT_SUBMIT(event);
-}
-
-static void process_complete_frame(void)
-{
-	uint8_t rsp_type;
-	uint8_t rsp_payload[CDC_WRAPPER_MAX_PAYLOAD_LEN];
-	size_t rsp_payload_len = 0U;
-	int err;
-
-	err = protocol_module_process_cdc_packet(parser.type,
-						 parser.payload,
-						 parser.payload_pos,
-						 &rsp_type,
-						 rsp_payload,
-						 sizeof(rsp_payload),
-						 &rsp_payload_len);
-	if (err == -ENOTSUP) {
-		LOG_WRN("Ignore unsupported CDC packet type:0x%02x", parser.type);
-		return;
-	}
-
-	if (err) {
-		LOG_WRN("Protocol processing failed (%d)", err);
-		return;
-	}
-
-	LOG_INF("CDC HelloRsp encoded len:%u", (uint32_t)rsp_payload_len);
-	submit_tx_frame(rsp_type, rsp_payload, rsp_payload_len);
-}
-
-static void consume_byte(uint8_t byte)
-{
-	switch (parser.state) {
-	case FRAME_PARSE_HEAD1:
-		if (byte == CDC_WRAPPER_HEAD1) {
-			parser.state = FRAME_PARSE_HEAD2;
-		}
-		break;
-
-	case FRAME_PARSE_HEAD2:
-		if (byte == CDC_WRAPPER_HEAD2) {
-			parser.state = FRAME_PARSE_LEN;
-		} else if (byte != CDC_WRAPPER_HEAD1) {
-			parser.state = FRAME_PARSE_HEAD1;
-		}
-		break;
-
-	case FRAME_PARSE_LEN:
-		if (byte > CDC_WRAPPER_MAX_PAYLOAD_LEN) {
-			LOG_WRN("Drop CDC frame with invalid len:%u", byte);
-			parser_reset();
-			break;
-		}
-
-		parser.len = byte;
-		parser.payload_pos = 0U;
-		parser.state = FRAME_PARSE_TYPE;
-		break;
-
-	case FRAME_PARSE_TYPE:
-		parser.type = byte;
-		parser.state = (parser.len == 0U) ? FRAME_PARSE_CHECKSUM :
-						 FRAME_PARSE_PAYLOAD;
-		break;
-
-	case FRAME_PARSE_PAYLOAD:
-		parser.payload[parser.payload_pos++] = byte;
-		if (parser.payload_pos >= parser.len) {
-			parser.state = FRAME_PARSE_CHECKSUM;
-		}
-		break;
-
-	case FRAME_PARSE_CHECKSUM:
-		if (byte != frame_checksum(parser.len, parser.type,
-					       parser.payload, parser.payload_pos)) {
-			LOG_WRN("Drop CDC frame with invalid checksum");
-			parser_reset();
-			break;
-		}
-
-		process_complete_frame();
-		parser_reset();
-		break;
-
-	default:
-		parser_reset();
-		break;
-	}
-}
-
-static bool handle_usb_cdc_rx_event(const struct usb_cdc_rx_event *event)
-{
-	if (!running) {
-		return false;
-	}
-
-	for (size_t i = 0; i < event->dyndata.size; i++) {
-		consume_byte(event->dyndata.data[i]);
-	}
-
-	return false;
-}
-
-static int module_init(void)
-{
-	parser_reset();
-	return 0;
-}
-
-static int module_start(void)
-{
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-	return 0;
-}
-
-static void module_pause(void)
-{
-	if (!running) {
-		return;
-	}
-
-	running = false;
-	parser_reset();
-}
-
-static bool app_event_handler(const struct app_event_header *aeh)
-{
-	if (is_usb_cdc_rx_event(aeh)) {
-		return handle_usb_cdc_rx_event(cast_usb_cdc_rx_event(aeh));
-	}
-
-	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
-
-		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	if (is_power_down_event(aeh)) {
-		if (initialized) {
-			module_pause();
-			module_set_state(MODULE_STATE_STANDBY);
-		}
-
-		return false;
-	}
-
-	if (is_wake_up_event(aeh)) {
-		if (initialized) {
-			int err = module_start();
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	return false;
-}
-
-APP_EVENT_LISTENER(MODULE, app_event_handler);
-APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_cdc_rx_event);
-APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
-APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/display_module.c

@@ -14,8 +14,12 @@
 #include <zephyr/logging/log.h>
 
 #include "bat_state_event.h"
+#include "datetime_event.h"
 #include "hid_led_event.h"
+#include "module_lifecycle.h"
 #include "mode_switch_event.h"
+#include "theme_rgb_update_event.h"
+#include "theme_color.h"
 #include "ui/ui_main.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
@@ -24,42 +28,74 @@ BUILD_ASSERT(DT_HAS_CHOSEN(zephyr_display), "Missing zephyr,display chosen node"
 BUILD_ASSERT(DT_NODE_HAS_STATUS(DT_ALIAS(backlight), okay),
 	     "Missing backlight alias");
 
-static const struct device *const display_dev =
+struct display_module_ctx {
-	DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
+	struct module_lifecycle_ctx lc;
-static const struct device *const backlight_dev =
+	const struct device *display_dev;
-	DEVICE_DT_GET(DT_PARENT(DT_ALIAS(backlight)));
+	const struct device *backlight_dev;
-static const uint32_t backlight_idx = DT_NODE_CHILD_IDX(DT_ALIAS(backlight));
+	uint32_t backlight_idx;
-static struct ui_main_model ui_model = {
+	struct ui_main_model ui_model;
-	.theme_color = LV_COLOR_MAKE(0x4C, 0x9E, 0xF5),
+	bool lvgl_initialized;
-	.inactive_border_color = LV_COLOR_MAKE(0x3A, 0x44, 0x52),
+	char date_text[DATETIME_EVENT_DATE_TEXT_LEN];
-	.mode = MODE_SWITCH_BLE,
+	char time_text[DATETIME_EVENT_TIME_TEXT_LEN];
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct display_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.display_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_display)),
+	.backlight_dev = DEVICE_DT_GET(DT_PARENT(DT_ALIAS(backlight))),
+	.backlight_idx = DT_NODE_CHILD_IDX(DT_ALIAS(backlight)),
+	.ui_model = {
+		.theme_color = LV_COLOR_MAKE(BLINKY_THEME_DEFAULT_R,
+					     BLINKY_THEME_DEFAULT_G,
+					     BLINKY_THEME_DEFAULT_B),
+		.inactive_border_color = LV_COLOR_MAKE(0x3A, 0x44, 0x52),
+		.mode = MODE_SWITCH_BLE,
+	},
+	.date_text = "1970/01/01",
+	.time_text = "00:00:00",
 };
-static bool initialized;
-static bool running;
-static bool lvgl_initialized;
 
 static int backlight_set(bool on)
 {
 	if (on) {
-		return led_on(backlight_dev, backlight_idx);
+		return led_on(ctx.backlight_dev, ctx.backlight_idx);
 	}
 
-	return led_off(backlight_dev, backlight_idx);
+	return led_off(ctx.backlight_dev, ctx.backlight_idx);
 }
 
-static int module_init(void)
+static int do_init(void)
 {
 	int err;
 
-	LOG_INF("Display init on %s", display_dev->name);
+	LOG_INF("Display init on %s", ctx.display_dev->name);
 
-	if (!device_is_ready(display_dev)) {
+	if (!device_is_ready(ctx.display_dev)) {
-		LOG_ERR("Display device %s not ready", display_dev->name);
+		LOG_ERR("Display device %s not ready", ctx.display_dev->name);
 		return -ENODEV;
 	}
 
-	if (!device_is_ready(backlight_dev)) {
+	if (!device_is_ready(ctx.backlight_dev)) {
-		LOG_ERR("Backlight device %s not ready", backlight_dev->name);
+		LOG_ERR("Backlight device %s not ready", ctx.backlight_dev->name);
 		return -ENODEV;
 	}
 
@@ -72,25 +108,25 @@ static int module_init(void)
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	int err;
 
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
 		return 0;
 	}
 
-	if (!lvgl_initialized) {
+	if (!ctx.lvgl_initialized) {
 		err = lvgl_init();
 		if (err) {
 			LOG_ERR("lvgl_init failed (%d)", err);
 			return err;
 		}
 
-		lvgl_initialized = true;
+		ctx.lvgl_initialized = true;
 
 		lvgl_lock();
-		ui_main_init(&ui_model, "WH Mini", "Hello World");
+		ui_main_init(&ctx.ui_model, ctx.date_text, ctx.time_text);
 		lvgl_unlock();
 	}
 
@@ -100,39 +136,39 @@ static int module_start(void)
 		return err;
 	}
 
-	err = display_blanking_off(display_dev);
+	err = display_blanking_off(ctx.display_dev);
 	if (err) {
 		LOG_ERR("display_blanking_off failed (%d)", err);
 		(void)backlight_set(false);
 		return err;
 	}
 
-	running = true;
 	LOG_INF("LVGL display started");
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
-		return;
+		return 0;
 	}
 
-	(void)display_blanking_on(display_dev);
+	(void)display_blanking_on(ctx.display_dev);
 	(void)backlight_set(false);
-	running = false;
 	LOG_INF("LVGL display paused");
+
+	return 0;
 }
 
 static void refresh_ui(void)
 {
-	if (!lvgl_initialized) {
+	if (!ctx.lvgl_initialized) {
 		return;
 	}
 
 	lvgl_lock();
-	ui_main_refresh_all(&ui_model, "WH Mini", "Hello World");
+	ui_main_refresh_all(&ctx.ui_model, ctx.date_text, ctx.time_text);
 	lvgl_unlock();
 }
 
@@ -141,9 +177,9 @@ static bool app_event_handler(const struct app_event_header *aeh)
 	if (is_bat_state_event(aeh)) {
 		const struct bat_state_event *event = cast_bat_state_event(aeh);
 
-		ui_model.battery_level = event->soc;
+		ctx.ui_model.battery_level = event->soc;
-		ui_model.charging = event->charging;
+		ctx.ui_model.charging = event->charging;
-		ui_model.full = event->full;
+		ctx.ui_model.full = event->full;
 		refresh_ui();
 		return false;
 	}
@@ -151,7 +187,7 @@ static bool app_event_handler(const struct app_event_header *aeh)
 	if (is_mode_switch_event(aeh)) {
 		const struct mode_switch_event *event = cast_mode_switch_event(aeh);
 
-		ui_model.mode = event->mode;
+		ctx.ui_model.mode = event->mode;
 		refresh_ui();
 		return false;
 	}
@@ -159,55 +195,54 @@ static bool app_event_handler(const struct app_event_header *aeh)
 	if (is_hid_led_event(aeh)) {
 		const struct hid_led_event *event = cast_hid_led_event(aeh);
 
-		ui_model.led_mask = event->led_bm;
+		ctx.ui_model.led_mask = event->led_bm;
+		refresh_ui();
+		return false;
+	}
+
+	if (is_theme_rgb_update_event(aeh)) {
+		const struct theme_rgb_update_event *event =
+			cast_theme_rgb_update_event(aeh);
+
+		ctx.ui_model.theme_color = (lv_color_t)LV_COLOR_MAKE(event->theme.r,
+								     event->theme.g,
+								     event->theme.b);
+		refresh_ui();
+		return false;
+	}
+
+	if (is_datetime_event(aeh)) {
+		const struct datetime_event *event = cast_datetime_event(aeh);
+
+		strncpy(ctx.date_text, event->date_text, sizeof(ctx.date_text));
+		ctx.date_text[sizeof(ctx.date_text) - 1] = '\0';
+		strncpy(ctx.time_text, event->time_text, sizeof(ctx.time_text));
+		ctx.time_text[sizeof(ctx.time_text) - 1] = '\0';
 		refresh_ui();
 		return false;
 	}
 
 	if (is_module_state_event(aeh)) {
 		const struct module_state_event *event = cast_module_state_event(aeh);
-		int err;
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			if (!initialized) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			module_pause();
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
@@ -218,8 +253,10 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, bat_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, datetime_event);
 APP_EVENT_SUBSCRIBE(MODULE, hid_led_event);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, mode_switch_event);
+APP_EVENT_SUBSCRIBE(MODULE, theme_rgb_update_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/encoder_module.c

@@ -13,6 +13,7 @@
 #include <zephyr/pm/device.h>
 
 #include "encoder_event.h"
+#include "module_lifecycle.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
@@ -22,40 +23,64 @@ LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
 BUILD_ASSERT(DT_NODE_EXISTS(ENCODER_QDEC_NODE), "Missing qdec0 alias");
 
-static const struct device *const qdec_dev = DEVICE_DT_GET(ENCODER_QDEC_NODE);
+struct encoder_module_ctx {
-
+	struct module_lifecycle_ctx lc;
-static struct k_work encoder_report_work;
+	const struct device *qdec_dev;
-static struct sensor_trigger encoder_trigger = {
+	struct k_work encoder_report_work;
-	.type = SENSOR_TRIG_DATA_READY,
+	struct sensor_trigger encoder_trigger;
-	.chan = SENSOR_CHAN_ROTATION,
+	int64_t angle_remainder_udeg;
 };
 
-static bool initialized;
+static int do_init(void);
-static bool running;
+static int do_start(void);
-static int64_t angle_remainder_udeg;
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct encoder_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.qdec_dev = DEVICE_DT_GET(ENCODER_QDEC_NODE),
+	.encoder_trigger = {
+		.type = SENSOR_TRIG_DATA_READY,
+		.chan = SENSOR_CHAN_ROTATION,
+	},
+};
 
 static int64_t sensor_value_to_udeg(const struct sensor_value *value)
 {
 	return ((int64_t)value->val1 * 1000000LL) + value->val2;
 }
 
-static void submit_detents(int32_t detents)
+static void submit_detents_batched(int32_t detents)
 {
 	while (detents != 0) {
-		struct encoder_event *event = new_encoder_event();
+		int8_t event_detents;
 
 		if (detents > INT8_MAX) {
-			event->detents = INT8_MAX;
+			event_detents = INT8_MAX;
 			detents -= INT8_MAX;
 		} else if (detents < INT8_MIN) {
-			event->detents = INT8_MIN;
+			event_detents = INT8_MIN;
 			detents -= INT8_MIN;
 		} else {
-			event->detents = (int8_t)detents;
+			event_detents = (int8_t)detents;
 			detents = 0;
 		}
 
-		APP_EVENT_SUBMIT(event);
+		submit_encoder_event(event_detents);
 	}
 }
 
@@ -68,28 +93,29 @@ static void encoder_report_work_handler(struct k_work *work)
 
 	ARG_UNUSED(work);
 
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
 		return;
 	}
 
-	err = sensor_sample_fetch(qdec_dev);
+	err = sensor_sample_fetch(ctx.qdec_dev);
 	if (err) {
 		LOG_WRN("QDEC sample fetch failed (%d)", err);
 		return;
 	}
 
-	err = sensor_channel_get(qdec_dev, SENSOR_CHAN_ROTATION, &rotation);
+	err = sensor_channel_get(ctx.qdec_dev, SENSOR_CHAN_ROTATION, &rotation);
 	if (err) {
 		LOG_WRN("QDEC channel get failed (%d)", err);
 		return;
 	}
 
-	total_udeg = angle_remainder_udeg + sensor_value_to_udeg(&rotation);
+	total_udeg = ctx.angle_remainder_udeg + sensor_value_to_udeg(&rotation);
 	detents = (int32_t)(total_udeg / ENCODER_DETENT_UDEG);
-	angle_remainder_udeg = total_udeg - ((int64_t)detents * ENCODER_DETENT_UDEG);
+	ctx.angle_remainder_udeg =
+		total_udeg - ((int64_t)detents * ENCODER_DETENT_UDEG);
 
 	if (detents != 0) {
-		submit_detents(detents);
+		submit_detents_batched(detents);
 	}
 }
 
@@ -99,26 +125,27 @@ static void encoder_trigger_handler(const struct device *dev,
 	ARG_UNUSED(dev);
 	ARG_UNUSED(trigger);
 
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
 		return;
 	}
 
-	k_work_submit(&encoder_report_work);
+	k_work_submit(&ctx.encoder_report_work);
 }
 
-static int module_init(void)
+static int do_init(void)
 {
 	int err;
 
-	if (!device_is_ready(qdec_dev)) {
+	if (!device_is_ready(ctx.qdec_dev)) {
 		LOG_ERR("QDEC device not ready");
 		return -ENODEV;
 	}
 
-	k_work_init(&encoder_report_work, encoder_report_work_handler);
+	k_work_init(&ctx.encoder_report_work, encoder_report_work_handler);
-	angle_remainder_udeg = 0;
+	ctx.angle_remainder_udeg = 0;
 
-	err = sensor_trigger_set(qdec_dev, &encoder_trigger, encoder_trigger_handler);
+	err = sensor_trigger_set(ctx.qdec_dev, &ctx.encoder_trigger,
+				 encoder_trigger_handler);
 	if (err) {
 		LOG_ERR("Cannot set QDEC trigger (%d)", err);
 		return err;
@@ -127,41 +154,41 @@ static int module_init(void)
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	int err;
 
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
 		return 0;
 	}
 
-	err = pm_device_action_run(qdec_dev, PM_DEVICE_ACTION_RESUME);
+	err = pm_device_action_run(ctx.qdec_dev, PM_DEVICE_ACTION_RESUME);
 	if (err && (err != -EALREADY) && (err != -ENOTSUP)) {
 		LOG_ERR("Cannot resume QDEC device (%d)", err);
 		return err;
 	}
 
-	angle_remainder_udeg = 0;
+	ctx.angle_remainder_udeg = 0;
-	running = true;
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
 	int err;
 
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
-		return;
+		return 0;
 	}
 
-	err = pm_device_action_run(qdec_dev, PM_DEVICE_ACTION_SUSPEND);
+	err = pm_device_action_run(ctx.qdec_dev, PM_DEVICE_ACTION_SUSPEND);
 	if (err && (err != -EALREADY) && (err != -ENOTSUP)) {
 		LOG_WRN("Cannot suspend QDEC device (%d)", err);
 	}
 
-	angle_remainder_udeg = 0;
+	ctx.angle_remainder_udeg = 0;
-	running = false;
+
+	return 0;
 }
 
 static bool app_event_handler(const struct app_event_header *aeh)
@@ -170,47 +197,23 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		const struct module_state_event *event = cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			module_pause();
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;

src/events/datetime_event.c

@@ -0,0 +1,26 @@
+#include "datetime_event.h"
+
+static void log_datetime_event(const struct app_event_header *aeh)
+{
+	const struct datetime_event *event = cast_datetime_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "date:%s time:%s",
+			      event->date_text, event->time_text);
+}
+
+static void profile_datetime_event(struct log_event_buf *buf,
+				   const struct app_event_header *aeh)
+{
+	ARG_UNUSED(buf);
+	ARG_UNUSED(aeh);
+}
+
+APP_EVENT_INFO_DEFINE(datetime_event,
+		      ENCODE(),
+		      ENCODE(),
+		      profile_datetime_event);
+
+APP_EVENT_TYPE_DEFINE(datetime_event,
+		      log_datetime_event,
+		      &datetime_event_info,
+		      APP_EVENT_FLAGS_CREATE());

src/events/function_bitmap_state_event.c

@@ -0,0 +1,27 @@
+#include "function_bitmap_state_event.h"
+
+static void log_function_bitmap_state_event(const struct app_event_header *aeh)
+{
+	const struct function_bitmap_state_event *event =
+		cast_function_bitmap_state_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "bitmap_len:%zu", sizeof(event->bitmap));
+}
+
+static void profile_function_bitmap_state_event(struct log_event_buf *buf,
+						const struct app_event_header *aeh)
+{
+	ARG_UNUSED(buf);
+	ARG_UNUSED(aeh);
+}
+
+APP_EVENT_INFO_DEFINE(function_bitmap_state_event,
+		      ENCODE(),
+		      ENCODE(),
+		      profile_function_bitmap_state_event);
+
+APP_EVENT_TYPE_DEFINE(function_bitmap_state_event,
+		      log_function_bitmap_state_event,
+		      &function_bitmap_state_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/function_bitmap_update_event.c

@@ -0,0 +1,24 @@
+#include "function_bitmap_update_event.h"
+
+static void log_function_bitmap_update_event(const struct app_event_header *aeh)
+{
+	APP_EVENT_MANAGER_LOG(aeh, "bitmap updated");
+}
+
+static void profile_function_bitmap_update_event(struct log_event_buf *buf,
+						 const struct app_event_header *aeh)
+{
+	ARG_UNUSED(buf);
+	ARG_UNUSED(aeh);
+}
+
+APP_EVENT_INFO_DEFINE(function_bitmap_update_event,
+		      ENCODE(),
+		      ENCODE(),
+		      profile_function_bitmap_update_event);
+
+APP_EVENT_TYPE_DEFINE(function_bitmap_update_event,
+		      log_function_bitmap_update_event,
+		      &function_bitmap_update_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_channel_state_event.c

@@ -0,0 +1,51 @@
+#include "hid_channel_state_event.h"
+
+static const char *channel_name(enum hid_send_channel channel)
+{
+	switch (channel) {
+	case HID_SEND_CH_USB_KEYS:
+		return "usb_keys";
+	case HID_SEND_CH_USB_CONSUMER:
+		return "usb_consumer";
+	case HID_SEND_CH_BLE_SHARED:
+		return "ble_shared";
+	default:
+		return "?";
+	}
+}
+
+static void log_hid_channel_state_event(const struct app_event_header *aeh)
+{
+	const struct hid_channel_state_event *event =
+		cast_hid_channel_state_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh,
+			      "channel:%s ready_bm:0x%02x protocol:%d",
+			      channel_name(event->channel),
+			      event->report_ready_bm,
+			      event->protocol_mode);
+}
+
+static void profile_hid_channel_state_event(struct log_event_buf *buf,
+					    const struct app_event_header *aeh)
+{
+	const struct hid_channel_state_event *event =
+		cast_hid_channel_state_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->channel);
+	nrf_profiler_log_encode_uint8(buf, event->report_ready_bm);
+	nrf_profiler_log_encode_uint8(buf, event->protocol_mode);
+}
+
+APP_EVENT_INFO_DEFINE(hid_channel_state_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("channel", "ready_bm", "protocol_mode"),
+		      profile_hid_channel_state_event);
+
+APP_EVENT_TYPE_DEFINE(hid_channel_state_event,
+		      log_hid_channel_state_event,
+		      &hid_channel_state_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_report_sent_event.c

@@ -1,12 +1,14 @@
 #include "hid_report_sent_event.h"
 
-static const char *transport_name(enum hid_transport transport)
+static const char *channel_name(enum hid_send_channel channel)
 {
-	switch (transport) {
+	switch (channel) {
-	case HID_TRANSPORT_USB:
+	case HID_SEND_CH_USB_KEYS:
-		return "USB";
+		return "usb_keys";
-	case HID_TRANSPORT_BLE:
+	case HID_SEND_CH_USB_CONSUMER:
-		return "BLE";
+		return "usb_consumer";
+	case HID_SEND_CH_BLE_SHARED:
+		return "ble_shared";
 	default:
 		return "?";
 	}
@@ -28,8 +30,8 @@ static void log_hid_report_sent_event(const struct app_event_header *aeh)
 {
 	const struct hid_report_sent_event *event = cast_hid_report_sent_event(aeh);
 
-	APP_EVENT_MANAGER_LOG(aeh, "transport:%s type:%s seq:%u error:%u",
+	APP_EVENT_MANAGER_LOG(aeh, "channel:%s type:%s seq:%u error:%u",
-			      transport_name(event->transport),
+			      channel_name(event->channel),
 			      report_type_name(event->report_type),
 			      event->sequence,
 			      event->error);
@@ -40,7 +42,7 @@ static void profile_hid_report_sent_event(struct log_event_buf *buf,
 {
 	const struct hid_report_sent_event *event = cast_hid_report_sent_event(aeh);
 
-	nrf_profiler_log_encode_uint8(buf, event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->channel);
 	nrf_profiler_log_encode_uint8(buf, event->report_type);
 	nrf_profiler_log_encode_uint16(buf, event->sequence);
 	nrf_profiler_log_encode_uint8(buf, event->error);
@@ -51,7 +53,7 @@ APP_EVENT_INFO_DEFINE(hid_report_sent_event,
 			     NRF_PROFILER_ARG_U8,
 			     NRF_PROFILER_ARG_U16,
 			     NRF_PROFILER_ARG_U8),
-		      ENCODE("transport", "report_type", "sequence", "error"),
+		      ENCODE("channel", "report_type", "sequence", "error"),
 		      profile_hid_report_sent_event);
 
 APP_EVENT_TYPE_DEFINE(hid_report_sent_event,

src/events/hid_transport_state_event.c

@@ -1,68 +0,0 @@
-#include "hid_transport_state_event.h"
-
-static const char *transport_name(enum hid_transport transport)
-{
-	switch (transport) {
-	case HID_TRANSPORT_USB:
-		return "USB";
-	case HID_TRANSPORT_BLE:
-		return "BLE";
-	default:
-		return "?";
-	}
-}
-
-static const char *protocol_mode_name(enum keyboard_protocol_mode protocol_mode)
-{
-	switch (protocol_mode) {
-	case KEYBOARD_PROTOCOL_MODE_BOOT:
-		return "boot";
-	case KEYBOARD_PROTOCOL_MODE_REPORT:
-		return "report";
-	default:
-		return "?";
-	}
-}
-
-static void log_hid_transport_state_event(const struct app_event_header *aeh)
-{
-	const struct hid_transport_state_event *event =
-		cast_hid_transport_state_event(aeh);
-
-	APP_EVENT_MANAGER_LOG(aeh,
-			      "transport:%s ready:%u keys_ready:%u consumer_ready:%u protocol:%s",
-			      transport_name(event->transport),
-			      event->ready,
-			      event->keys_ready,
-			      event->consumer_ready,
-			      protocol_mode_name(event->protocol_mode));
-}
-
-static void profile_hid_transport_state_event(struct log_event_buf *buf,
-					      const struct app_event_header *aeh)
-{
-	const struct hid_transport_state_event *event =
-		cast_hid_transport_state_event(aeh);
-
-	nrf_profiler_log_encode_uint8(buf, event->transport);
-	nrf_profiler_log_encode_uint8(buf, event->ready);
-	nrf_profiler_log_encode_uint8(buf, event->keys_ready);
-	nrf_profiler_log_encode_uint8(buf, event->consumer_ready);
-	nrf_profiler_log_encode_uint8(buf, event->protocol_mode);
-}
-
-APP_EVENT_INFO_DEFINE(hid_transport_state_event,
-		      ENCODE(NRF_PROFILER_ARG_U8,
-			     NRF_PROFILER_ARG_U8,
-			     NRF_PROFILER_ARG_U8,
-			     NRF_PROFILER_ARG_U8,
-			     NRF_PROFILER_ARG_U8),
-		      ENCODE("transport", "ready", "keys_ready", "consumer_ready",
-			     "protocol_mode"),
-		      profile_hid_transport_state_event);
-
-APP_EVENT_TYPE_DEFINE(hid_transport_state_event,
-		      log_hid_transport_state_event,
-		      &hid_transport_state_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/hid_tx_report_event.c

@@ -4,13 +4,15 @@
 
 #define HID_TX_REPORT_EVENT_LOG_BUF_LEN 192
 
-static const char *transport_name(enum hid_transport transport)
+static const char *channel_name(enum hid_send_channel channel)
 {
-	switch (transport) {
+	switch (channel) {
-	case HID_TRANSPORT_USB:
+	case HID_SEND_CH_USB_KEYS:
-		return "USB";
+		return "usb_keys";
-	case HID_TRANSPORT_BLE:
+	case HID_SEND_CH_USB_CONSUMER:
-		return "BLE";
+		return "usb_consumer";
+	case HID_SEND_CH_BLE_SHARED:
+		return "ble_shared";
 	default:
 		return "?";
 	}
@@ -47,8 +49,8 @@ static void log_hid_tx_report_event(const struct app_event_header *aeh)
 	int pos;
 
 	pos = snprintf(log_buf, sizeof(log_buf),
-		       "transport:%s type:%s protocol:%s seq:%u len:%zu",
+		       "channel:%s type:%s protocol:%s seq:%u len:%zu",
-		       transport_name(event->transport),
+		       channel_name(event->channel),
 		       report_type_name(event->report_type),
 		       protocol_mode_name(event->protocol_mode),
 		       event->sequence,
@@ -84,7 +86,7 @@ static void profile_hid_tx_report_event(struct log_event_buf *buf,
 {
 	const struct hid_tx_report_event *event = cast_hid_tx_report_event(aeh);
 
-	nrf_profiler_log_encode_uint8(buf, event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->channel);
 	nrf_profiler_log_encode_uint8(buf, event->report_type);
 	nrf_profiler_log_encode_uint8(buf, event->protocol_mode);
 	nrf_profiler_log_encode_uint16(buf, event->sequence);
@@ -97,7 +99,7 @@ APP_EVENT_INFO_DEFINE(hid_tx_report_event,
 			     NRF_PROFILER_ARG_U8,
 			     NRF_PROFILER_ARG_U16,
 			     NRF_PROFILER_ARG_U8),
-		      ENCODE("transport", "report_type", "protocol_mode", "sequence", "len"),
+		      ENCODE("channel", "report_type", "protocol_mode", "sequence", "len"),
 		      profile_hid_tx_report_event);
 
 APP_EVENT_TYPE_DEFINE(hid_tx_report_event,

src/events/keyboard_hid_report_event.c

@@ -7,6 +7,8 @@
 static const char *mode_name(enum mode_switch_mode mode)
 {
 	switch (mode) {
+	case MODE_SWITCH_INVALID:
+		return "INVALID";
 	case MODE_SWITCH_USB:
 		return "USB";
 	case MODE_SWITCH_24G:

src/events/led_strip_en_event.c

@@ -0,0 +1,27 @@
+#include "led_strip_en_event.h"
+
+static void log_led_strip_en_event(const struct app_event_header *aeh)
+{
+	const struct led_strip_en_event *event = cast_led_strip_en_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "enabled:%u", event->enabled);
+}
+
+static void profile_led_strip_en_event(struct log_event_buf *buf,
+				       const struct app_event_header *aeh)
+{
+	const struct led_strip_en_event *event = cast_led_strip_en_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->enabled);
+}
+
+APP_EVENT_INFO_DEFINE(led_strip_en_event,
+		      ENCODE(NRF_PROFILER_ARG_U8),
+		      ENCODE("enabled"),
+		      profile_led_strip_en_event);
+
+APP_EVENT_TYPE_DEFINE(led_strip_en_event,
+		      log_led_strip_en_event,
+		      &led_strip_en_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/mode_switch_event.c

@@ -5,6 +5,8 @@
 static const char *mode_name(enum mode_switch_mode mode)
 {
 	switch (mode) {
+	case MODE_SWITCH_INVALID:
+		return "INVALID";
 	case MODE_SWITCH_USB:
 		return "USB";
 	case MODE_SWITCH_24G:

src/events/proto_rx_event.c

@@ -0,0 +1,42 @@
+#include "proto_rx_event.h"
+
+static const char *transport_name(enum proto_transport transport)
+{
+	switch (transport) {
+	case PROTO_TRANSPORT_USB_CDC:
+		return "usb_cdc";
+	case PROTO_TRANSPORT_BLE_NUS:
+		return "ble_nus";
+	default:
+		return "?";
+	}
+}
+
+static void log_proto_rx_event(const struct app_event_header *aeh)
+{
+	const struct proto_rx_event *event = cast_proto_rx_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "transport:%s len:%zu",
+			      transport_name(event->transport),
+			      event->dyndata.size);
+}
+
+static void profile_proto_rx_event(struct log_event_buf *buf,
+				   const struct app_event_header *aeh)
+{
+	const struct proto_rx_event *event = cast_proto_rx_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->transport);
+	nrf_profiler_log_encode_uint16(buf, (uint16_t)event->dyndata.size);
+}
+
+APP_EVENT_INFO_DEFINE(proto_rx_event,
+		      ENCODE(NRF_PROFILER_ARG_U8, NRF_PROFILER_ARG_U16),
+		      ENCODE("transport", "len"),
+		      profile_proto_rx_event);
+
+APP_EVENT_TYPE_DEFINE(proto_rx_event,
+		      log_proto_rx_event,
+		      &proto_rx_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/proto_transport_state_event.c

@@ -0,0 +1,56 @@
+#include "proto_transport_state_event.h"
+
+static const char *transport_name(enum proto_transport transport)
+{
+	switch (transport) {
+	case PROTO_TRANSPORT_USB_CDC:
+		return "usb_cdc";
+	case PROTO_TRANSPORT_BLE_NUS:
+		return "ble_nus";
+	default:
+		return "?";
+	}
+}
+
+static const char *state_name(enum proto_transport_link_state state)
+{
+	switch (state) {
+	case PROTO_TRANSPORT_LINK_DOWN:
+		return "down";
+	case PROTO_TRANSPORT_LINK_READY:
+		return "ready";
+	default:
+		return "?";
+	}
+}
+
+static void log_proto_transport_state_event(const struct app_event_header *aeh)
+{
+	const struct proto_transport_state_event *event =
+		cast_proto_transport_state_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "transport:%s state:%s",
+			      transport_name(event->transport),
+			      state_name(event->state));
+}
+
+static void profile_proto_transport_state_event(struct log_event_buf *buf,
+						const struct app_event_header *aeh)
+{
+	const struct proto_transport_state_event *event =
+		cast_proto_transport_state_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->transport);
+	nrf_profiler_log_encode_uint8(buf, event->state);
+}
+
+APP_EVENT_INFO_DEFINE(proto_transport_state_event,
+		      ENCODE(NRF_PROFILER_ARG_U8, NRF_PROFILER_ARG_U8),
+		      ENCODE("transport", "state"),
+		      profile_proto_transport_state_event);
+
+APP_EVENT_TYPE_DEFINE(proto_transport_state_event,
+		      log_proto_transport_state_event,
+		      &proto_transport_state_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/proto_tx_event.c

@@ -0,0 +1,42 @@
+#include "proto_tx_event.h"
+
+static const char *transport_name(enum proto_transport transport)
+{
+	switch (transport) {
+	case PROTO_TRANSPORT_USB_CDC:
+		return "usb_cdc";
+	case PROTO_TRANSPORT_BLE_NUS:
+		return "ble_nus";
+	default:
+		return "?";
+	}
+}
+
+static void log_proto_tx_event(const struct app_event_header *aeh)
+{
+	const struct proto_tx_event *event = cast_proto_tx_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "transport:%s len:%zu",
+			      transport_name(event->transport),
+			      event->dyndata.size);
+}
+
+static void profile_proto_tx_event(struct log_event_buf *buf,
+				   const struct app_event_header *aeh)
+{
+	const struct proto_tx_event *event = cast_proto_tx_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->transport);
+	nrf_profiler_log_encode_uint16(buf, (uint16_t)event->dyndata.size);
+}
+
+APP_EVENT_INFO_DEFINE(proto_tx_event,
+		      ENCODE(NRF_PROFILER_ARG_U8, NRF_PROFILER_ARG_U16),
+		      ENCODE("transport", "len"),
+		      profile_proto_tx_event);
+
+APP_EVENT_TYPE_DEFINE(proto_tx_event,
+		      log_proto_tx_event,
+		      &proto_tx_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/theme_rgb_update_event.c

@@ -0,0 +1,34 @@
+#include "theme_rgb_update_event.h"
+
+static void log_theme_rgb_update_event(const struct app_event_header *aeh)
+{
+	const struct theme_rgb_update_event *event =
+		cast_theme_rgb_update_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "r:%u g:%u b:%u",
+			      event->theme.r, event->theme.g, event->theme.b);
+}
+
+static void profile_theme_rgb_update_event(struct log_event_buf *buf,
+					   const struct app_event_header *aeh)
+{
+	const struct theme_rgb_update_event *event =
+		cast_theme_rgb_update_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->theme.r);
+	nrf_profiler_log_encode_uint8(buf, event->theme.g);
+	nrf_profiler_log_encode_uint8(buf, event->theme.b);
+}
+
+APP_EVENT_INFO_DEFINE(theme_rgb_update_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("r", "g", "b"),
+		      profile_theme_rgb_update_event);
+
+APP_EVENT_TYPE_DEFINE(theme_rgb_update_event,
+		      log_theme_rgb_update_event,
+		      &theme_rgb_update_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/time_sync_event.c

@@ -0,0 +1,41 @@
+#include "time_sync_event.h"
+
+static void log_time_sync_event(const struct app_event_header *aeh)
+{
+	const struct time_sync_event *event = cast_time_sync_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh,
+			      "ver:%u flags:0x%08x tz:%d utc_ms:%llu acc:%u",
+			      event->version,
+			      event->flags,
+			      event->timezone_min,
+			      event->utc_ms,
+			      event->accuracy_ms);
+}
+
+static void profile_time_sync_event(struct log_event_buf *buf,
+				    const struct app_event_header *aeh)
+{
+	const struct time_sync_event *event = cast_time_sync_event(aeh);
+
+	nrf_profiler_log_encode_uint32(buf, event->version);
+	nrf_profiler_log_encode_uint32(buf, event->flags);
+	nrf_profiler_log_encode_int32(buf, event->timezone_min);
+	nrf_profiler_log_encode_uint32(buf, (uint32_t)(event->utc_ms & 0xFFFFFFFFULL));
+	nrf_profiler_log_encode_uint32(buf, event->accuracy_ms);
+}
+
+APP_EVENT_INFO_DEFINE(time_sync_event,
+		      ENCODE(NRF_PROFILER_ARG_U32,
+			     NRF_PROFILER_ARG_U32,
+			     NRF_PROFILER_ARG_S32,
+			     NRF_PROFILER_ARG_U32,
+			     NRF_PROFILER_ARG_U32),
+		      ENCODE("version", "flags", "timezone_min", "utc_ms_lo", "accuracy_ms"),
+		      profile_time_sync_event);
+
+APP_EVENT_TYPE_DEFINE(time_sync_event,
+		      log_time_sync_event,
+		      &time_sync_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/transport_policy_event.c

@@ -0,0 +1,78 @@
+#include "transport_policy_event.h"
+
+static const char *source_mode_name(enum mode_switch_mode mode)
+{
+	switch (mode) {
+	case MODE_SWITCH_USB:
+		return "USB";
+	case MODE_SWITCH_BLE:
+		return "BLE";
+	case MODE_SWITCH_24G:
+		return "24G";
+	default:
+		return "?";
+	}
+}
+
+static const char *hid_transport_policy_name(enum hid_transport_policy transport)
+{
+	switch (transport) {
+	case HID_TRANSPORT_POLICY_NONE:
+		return "none";
+	case HID_TRANSPORT_POLICY_USB:
+		return "usb";
+	case HID_TRANSPORT_POLICY_BLE:
+		return "ble";
+	default:
+		return "?";
+	}
+}
+
+static const char *ble_profile_policy_name(enum ble_profile_policy profile)
+{
+	switch (profile) {
+	case BLE_PROFILE_POLICY_NONE:
+		return "none";
+	case BLE_PROFILE_POLICY_GENERAL:
+		return "general";
+	case BLE_PROFILE_POLICY_DONGLE:
+		return "dongle";
+	default:
+		return "?";
+	}
+}
+
+static void log_transport_policy_event(const struct app_event_header *aeh)
+{
+	const struct transport_policy_event *event =
+		cast_transport_policy_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "source:%s hid:%s ble:%s",
+			      source_mode_name(event->source_mode),
+			      hid_transport_policy_name(event->hid_transport),
+			      ble_profile_policy_name(event->ble_profile));
+}
+
+static void profile_transport_policy_event(struct log_event_buf *buf,
+					   const struct app_event_header *aeh)
+{
+	const struct transport_policy_event *event =
+		cast_transport_policy_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->source_mode);
+	nrf_profiler_log_encode_uint8(buf, event->hid_transport);
+	nrf_profiler_log_encode_uint8(buf, event->ble_profile);
+}
+
+APP_EVENT_INFO_DEFINE(transport_policy_event,
+		      ENCODE(NRF_PROFILER_ARG_U8, NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("source_mode", "hid_transport", "ble_profile"),
+		      profile_transport_policy_event);
+
+APP_EVENT_TYPE_DEFINE(transport_policy_event,
+		      log_transport_policy_event,
+		      &transport_policy_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      IF_ENABLED(CONFIG_BRIDGE_LOG_TRANSPORT_POLICY_EVENT,
+					 (APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE))));

src/events/usb_cdc_rx_event.c

@@ -1,73 +0,0 @@
-#include <ctype.h>
-#include <stdio.h>
-
-#include "usb_cdc_rx_event.h"
-
-#define USB_CDC_RX_EVENT_LOG_BUF_LEN 384
-
-static void log_usb_cdc_rx_event(const struct app_event_header *aeh)
-{
-	const struct usb_cdc_rx_event *event = cast_usb_cdc_rx_event(aeh);
-	char log_buf[USB_CDC_RX_EVENT_LOG_BUF_LEN];
-	int pos;
-
-	pos = snprintf(log_buf, sizeof(log_buf), "len:%zu ascii:\"",
-		       event->dyndata.size);
-	if ((pos < 0) || (pos >= sizeof(log_buf))) {
-		APP_EVENT_MANAGER_LOG(aeh, "log message preparation failure");
-		return;
-	}
-
-	for (size_t i = 0; i < event->dyndata.size; i++) {
-		int tmp = snprintf(&log_buf[pos], sizeof(log_buf) - pos, "%c",
-				   isprint(event->dyndata.data[i]) ?
-					   event->dyndata.data[i] : '.');
-
-		if ((tmp < 0) || ((pos + tmp) >= sizeof(log_buf))) {
-			APP_EVENT_MANAGER_LOG(aeh, "len:%zu ascii:\"...\"",
-					      event->dyndata.size);
-			return;
-		}
-
-		pos += tmp;
-	}
-
-	pos += snprintf(&log_buf[pos], sizeof(log_buf) - pos, "\" hex:");
-	if ((pos < 0) || (pos >= sizeof(log_buf))) {
-		APP_EVENT_MANAGER_LOG(aeh, "len:%zu ascii:\"...\"",
-				      event->dyndata.size);
-		return;
-	}
-
-	for (size_t i = 0; i < event->dyndata.size; i++) {
-		int tmp = snprintf(&log_buf[pos], sizeof(log_buf) - pos, " %02x",
-				   event->dyndata.data[i]);
-
-		if ((tmp < 0) || ((pos + tmp) >= sizeof(log_buf))) {
-			break;
-		}
-
-		pos += tmp;
-	}
-
-	APP_EVENT_MANAGER_LOG(aeh, "%s", log_buf);
-}
-
-static void profile_usb_cdc_rx_event(struct log_event_buf *buf,
-				     const struct app_event_header *aeh)
-{
-	const struct usb_cdc_rx_event *event = cast_usb_cdc_rx_event(aeh);
-
-	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->dyndata.size);
-}
-
-APP_EVENT_INFO_DEFINE(usb_cdc_rx_event,
-		      ENCODE(NRF_PROFILER_ARG_U8),
-		      ENCODE("len"),
-		      profile_usb_cdc_rx_event);
-
-APP_EVENT_TYPE_DEFINE(usb_cdc_rx_event,
-		      log_usb_cdc_rx_event,
-		      &usb_cdc_rx_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_cdc_tx_event.c

@@ -1,62 +0,0 @@
-#include <ctype.h>
-#include <stdio.h>
-
-#include "usb_cdc_tx_event.h"
-
-#define USB_CDC_TX_EVENT_LOG_BUF_LEN 256
-
-static void log_usb_cdc_tx_event(const struct app_event_header *aeh)
-{
-	const struct usb_cdc_tx_event *event = cast_usb_cdc_tx_event(aeh);
-	char log_buf[USB_CDC_TX_EVENT_LOG_BUF_LEN];
-	int pos;
-
-	pos = snprintf(log_buf, sizeof(log_buf), "len:%zu ascii:\"",
-		       event->dyndata.size);
-	if ((pos < 0) || (pos >= sizeof(log_buf))) {
-		APP_EVENT_MANAGER_LOG(aeh, "log message preparation failure");
-		return;
-	}
-
-	for (size_t i = 0; i < event->dyndata.size; i++) {
-		int tmp = snprintf(&log_buf[pos], sizeof(log_buf) - pos, "%c",
-				   isprint(event->dyndata.data[i]) ?
-					   event->dyndata.data[i] : '.');
-
-		if ((tmp < 0) || ((pos + tmp) >= sizeof(log_buf))) {
-			APP_EVENT_MANAGER_LOG(aeh, "len:%zu ascii:\"...\"",
-					      event->dyndata.size);
-			return;
-		}
-
-		pos += tmp;
-	}
-
-	pos += snprintf(&log_buf[pos], sizeof(log_buf) - pos, "\"");
-	if ((pos < 0) || (pos >= sizeof(log_buf))) {
-		APP_EVENT_MANAGER_LOG(aeh, "len:%zu ascii:\"...\"",
-				      event->dyndata.size);
-		return;
-	}
-
-	APP_EVENT_MANAGER_LOG(aeh, "%s", log_buf);
-}
-
-static void profile_usb_cdc_tx_event(struct log_event_buf *buf,
-				     const struct app_event_header *aeh)
-{
-	const struct usb_cdc_tx_event *event = cast_usb_cdc_tx_event(aeh);
-
-	nrf_profiler_log_encode_uint8(buf, (uint8_t)event->dyndata.size);
-}
-
-APP_EVENT_INFO_DEFINE(usb_cdc_tx_event,
-		      ENCODE(NRF_PROFILER_ARG_U8),
-		      ENCODE("len"),
-		      profile_usb_cdc_tx_event);
-
-APP_EVENT_TYPE_DEFINE(usb_cdc_tx_event,
-		      log_usb_cdc_tx_event,
-		      &usb_cdc_tx_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_control_event.c

@@ -0,0 +1,82 @@
+#include "usb_control_event.h"
+
+static const char *control_event_name(enum usb_control_event_type type)
+{
+	switch (type) {
+	case USB_CONTROL_EVENT_CDC_LINE_STATE:
+		return "cdc_line_state";
+	case USB_CONTROL_EVENT_CDC_LINE_CODING:
+		return "cdc_line_coding";
+	default:
+		return "?";
+	}
+}
+
+static void log_usb_control_event(const struct app_event_header *aeh)
+{
+	const struct usb_control_event *event = cast_usb_control_event(aeh);
+
+	switch (event->type) {
+	case USB_CONTROL_EVENT_CDC_LINE_STATE:
+		APP_EVENT_MANAGER_LOG(aeh, "type:%s dtr:%u",
+				      control_event_name(event->type),
+				      event->data.cdc_line_state.dtr);
+		break;
+
+	case USB_CONTROL_EVENT_CDC_LINE_CODING:
+		APP_EVENT_MANAGER_LOG(aeh,
+				      "type:%s baud:%u data:%u stop:%u parity:%u flow:%u",
+				      control_event_name(event->type),
+				      event->data.cdc_line_coding.baudrate,
+				      event->data.cdc_line_coding.data_bits,
+				      event->data.cdc_line_coding.stop_bits,
+				      event->data.cdc_line_coding.parity,
+				      event->data.cdc_line_coding.flow_ctrl);
+		break;
+
+	default:
+		APP_EVENT_MANAGER_LOG(aeh, "type:%s",
+				      control_event_name(event->type));
+		break;
+	}
+}
+
+static void profile_usb_control_event(struct log_event_buf *buf,
+				      const struct app_event_header *aeh)
+{
+	const struct usb_control_event *event = cast_usb_control_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->type);
+	switch (event->type) {
+	case USB_CONTROL_EVENT_CDC_LINE_STATE:
+		nrf_profiler_log_encode_uint8(buf, event->data.cdc_line_state.dtr);
+		break;
+
+	case USB_CONTROL_EVENT_CDC_LINE_CODING:
+		nrf_profiler_log_encode_uint32(buf, event->data.cdc_line_coding.baudrate);
+		nrf_profiler_log_encode_uint8(buf, event->data.cdc_line_coding.data_bits);
+		nrf_profiler_log_encode_uint8(buf, event->data.cdc_line_coding.stop_bits);
+		nrf_profiler_log_encode_uint8(buf, event->data.cdc_line_coding.parity);
+		nrf_profiler_log_encode_uint8(buf, event->data.cdc_line_coding.flow_ctrl);
+		break;
+
+	default:
+		break;
+	}
+}
+
+APP_EVENT_INFO_DEFINE(usb_control_event,
+		      ENCODE(NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U32,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8,
+			     NRF_PROFILER_ARG_U8),
+		      ENCODE("type", "baud_or_zero", "arg1", "arg2", "arg3", "arg4"),
+		      profile_usb_control_event);
+
+APP_EVENT_TYPE_DEFINE(usb_control_event,
+		      log_usb_control_event,
+		      &usb_control_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_device_state_event.c

@@ -1,46 +0,0 @@
-#include "usb_device_state_event.h"
-
-static const char *usb_device_state_name(enum usb_device_state state)
-{
-	switch (state) {
-	case USB_DEVICE_STATE_DISCONNECTED:
-		return "disconnected";
-	case USB_DEVICE_STATE_POWERED:
-		return "powered";
-	case USB_DEVICE_STATE_ACTIVE:
-		return "active";
-	case USB_DEVICE_STATE_SUSPENDED:
-		return "suspended";
-	default:
-		return "?";
-	}
-}
-
-static void log_usb_device_state_event(const struct app_event_header *aeh)
-{
-	const struct usb_device_state_event *event =
-		cast_usb_device_state_event(aeh);
-
-	APP_EVENT_MANAGER_LOG(aeh, "state:%s",
-			      usb_device_state_name(event->state));
-}
-
-static void profile_usb_device_state_event(struct log_event_buf *buf,
-					   const struct app_event_header *aeh)
-{
-	const struct usb_device_state_event *event =
-		cast_usb_device_state_event(aeh);
-
-	nrf_profiler_log_encode_uint8(buf, event->state);
-}
-
-APP_EVENT_INFO_DEFINE(usb_device_state_event,
-		      ENCODE(NRF_PROFILER_ARG_U8),
-		      ENCODE("state"),
-		      profile_usb_device_state_event);
-
-APP_EVENT_TYPE_DEFINE(usb_device_state_event,
-		      log_usb_device_state_event,
-		      &usb_device_state_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_function_ready_event.c

@@ -1,42 +0,0 @@
-#include "usb_function_ready_event.h"
-
-static const char *usb_function_name(uint8_t function_mask)
-{
-	switch (function_mask) {
-	case USB_FUNCTION_HID:
-		return "hid";
-	case USB_FUNCTION_CDC_ACM:
-		return "cdc_acm";
-	default:
-		return "?";
-	}
-}
-
-static void log_usb_function_ready_event(const struct app_event_header *aeh)
-{
-	const struct usb_function_ready_event *event =
-		cast_usb_function_ready_event(aeh);
-
-	APP_EVENT_MANAGER_LOG(aeh, "function:%s",
-			      usb_function_name(event->function_mask));
-}
-
-static void profile_usb_function_ready_event(struct log_event_buf *buf,
-					     const struct app_event_header *aeh)
-{
-	const struct usb_function_ready_event *event =
-		cast_usb_function_ready_event(aeh);
-
-	nrf_profiler_log_encode_uint8(buf, event->function_mask);
-}
-
-APP_EVENT_INFO_DEFINE(usb_function_ready_event,
-		      ENCODE(NRF_PROFILER_ARG_U8),
-		      ENCODE("function_mask"),
-		      profile_usb_function_ready_event);
-
-APP_EVENT_TYPE_DEFINE(usb_function_ready_event,
-		      log_usb_function_ready_event,
-		      &usb_function_ready_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_prepare_event.c

@@ -1,24 +0,0 @@
-#include "usb_prepare_event.h"
-
-static void log_usb_prepare_event(const struct app_event_header *aeh)
-{
-	APP_EVENT_MANAGER_LOG(aeh, "prepare");
-}
-
-static void profile_usb_prepare_event(struct log_event_buf *buf,
-				      const struct app_event_header *aeh)
-{
-	ARG_UNUSED(buf);
-	ARG_UNUSED(aeh);
-}
-
-APP_EVENT_INFO_DEFINE(usb_prepare_event,
-		      ENCODE(),
-		      ENCODE(),
-		      profile_usb_prepare_event);
-
-APP_EVENT_TYPE_DEFINE(usb_prepare_event,
-		      log_usb_prepare_event,
-		      &usb_prepare_event_info,
-		      APP_EVENT_FLAGS_CREATE(
-			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/events/usb_state_event.c

@@ -0,0 +1,47 @@
+#include <caf/events/module_state_event.h>
+
+#include "usb_state_event.h"
+
+static const char *usb_state_name(enum usb_state state)
+{
+	switch (state) {
+	case USB_STATE_DISABLED:
+		return "disabled";
+	case USB_STATE_DISCONNECTED:
+		return "disconnected";
+	case USB_STATE_POWERED:
+		return "powered";
+	case USB_STATE_ACTIVE:
+		return "active";
+	case USB_STATE_SUSPENDED:
+		return "suspended";
+	default:
+		return "?";
+	}
+}
+
+static void log_usb_state_event(const struct app_event_header *aeh)
+{
+	const struct usb_state_event *event = cast_usb_state_event(aeh);
+
+	APP_EVENT_MANAGER_LOG(aeh, "state:%s", usb_state_name(event->state));
+}
+
+static void profile_usb_state_event(struct log_event_buf *buf,
+				    const struct app_event_header *aeh)
+{
+	const struct usb_state_event *event = cast_usb_state_event(aeh);
+
+	nrf_profiler_log_encode_uint8(buf, event->state);
+}
+
+APP_EVENT_INFO_DEFINE(usb_state_event,
+		      ENCODE(NRF_PROFILER_ARG_U8),
+		      ENCODE("state"),
+		      profile_usb_state_event);
+
+APP_EVENT_TYPE_DEFINE(usb_state_event,
+		      log_usb_state_event,
+		      &usb_state_event_info,
+		      APP_EVENT_FLAGS_CREATE(
+			      APP_EVENT_TYPE_FLAGS_INIT_LOG_ENABLE));

src/hid_flowctrl_module.c

@@ -10,12 +10,13 @@
 
 #include <zephyr/logging/log.h>
 
+#include "hid_channel_state_event.h"
 #include "hid_report_sent_event.h"
-#include "hid_transport_state_event.h"
 #include "hid_tx_report_event.h"
 #include "keyboard_core.h"
 #include "keyboard_hid_report_event.h"
-#include "mode_switch_event.h"
+#include "module_lifecycle.h"
+#include "transport_policy_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
@@ -37,49 +38,95 @@ struct queued_report {
 	uint8_t data[HID_FLOWCTRL_REPORT_DATA_MAX];
 };
 
-struct hid_transport_state_data {
+struct hid_channel_state_data {
-	bool ready;
+	uint8_t report_ready_bm;
-	bool keys_ready;
-	bool consumer_ready;
 	enum keyboard_protocol_mode protocol_mode;
 };
 
 struct in_flight_report {
 	bool active;
-	enum hid_transport transport;
+	enum hid_send_channel channel;
 	enum keyboard_report_type report_type;
 	uint16_t sequence;
 };
 
-static struct hid_transport_state_data transport_state[HID_TRANSPORT_COUNT] = {
+struct hid_flowctrl_module_ctx {
-	[HID_TRANSPORT_USB] = {
+	struct module_lifecycle_ctx lc;
-		.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+	struct hid_channel_state_data channel_state[HID_SEND_CH_COUNT];
+	struct pending_report pending_keys;
+	struct pending_report pending_consumer_latest;
+	struct queued_report consumer_fifo[HID_FLOWCTRL_FIFO_DEPTH];
+	uint8_t consumer_fifo_head;
+	uint8_t consumer_fifo_tail;
+	uint8_t consumer_fifo_count;
+	struct in_flight_report in_flight[HID_SEND_CH_COUNT];
+	enum hid_transport_policy current_transport;
+	uint16_t next_sequence;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct hid_flowctrl_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
 	},
-	[HID_TRANSPORT_BLE] = {
+	.channel_state = {
-		.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+		[HID_SEND_CH_USB_KEYS] = {
+			.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+		},
+		[HID_SEND_CH_USB_CONSUMER] = {
+			.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+		},
+		[HID_SEND_CH_BLE_SHARED] = {
+			.protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+		},
 	},
 };
-static struct pending_report pending_keys;
-static struct pending_report pending_consumer_latest;
-static struct queued_report consumer_fifo[HID_FLOWCTRL_FIFO_DEPTH];
-static uint8_t consumer_fifo_head;
-static uint8_t consumer_fifo_tail;
-static uint8_t consumer_fifo_count;
-static struct in_flight_report in_flight;
-static enum mode_switch_mode current_mode;
-static uint16_t next_sequence;
-static bool initialized;
-static bool running;
 
-static bool mode_to_transport(enum mode_switch_mode mode, enum hid_transport *transport)
+#define lifecycle ctx.lc
+#define channel_state ctx.channel_state
+#define pending_keys ctx.pending_keys
+#define pending_consumer_latest ctx.pending_consumer_latest
+#define consumer_fifo ctx.consumer_fifo
+#define consumer_fifo_head ctx.consumer_fifo_head
+#define consumer_fifo_tail ctx.consumer_fifo_tail
+#define consumer_fifo_count ctx.consumer_fifo_count
+#define in_flight ctx.in_flight
+#define current_transport ctx.current_transport
+#define next_sequence ctx.next_sequence
+#define running module_lifecycle_is_running(&ctx.lc)
+
+static bool current_transport_to_channel(enum keyboard_report_type report_type,
+					 enum hid_send_channel *channel)
 {
-	switch (mode) {
+	if (channel == NULL) {
-	case MODE_SWITCH_USB:
+		return false;
-		*transport = HID_TRANSPORT_USB;
+	}
+
+	switch (current_transport) {
+	case HID_TRANSPORT_POLICY_USB:
+		*channel = (report_type == KEYBOARD_REPORT_TYPE_KEYS) ?
+			   HID_SEND_CH_USB_KEYS :
+			   HID_SEND_CH_USB_CONSUMER;
 		return true;
 
-	case MODE_SWITCH_BLE:
+	case HID_TRANSPORT_POLICY_BLE:
-		*transport = HID_TRANSPORT_BLE;
+		*channel = HID_SEND_CH_BLE_SHARED;
 		return true;
 
 	default:
@@ -131,112 +178,137 @@ static bool consumer_fifo_pop(struct queued_report *entry)
 	return true;
 }
 
-static bool transport_can_send_report(enum keyboard_report_type report_type)
+static bool channel_can_send_report(enum hid_send_channel channel,
+				    enum keyboard_report_type report_type,
+				    enum keyboard_protocol_mode protocol_mode)
 {
-	enum hid_transport transport;
+	const struct hid_channel_state_data *state = &channel_state[channel];
-	struct hid_transport_state_data *state;
 
-	if (!mode_to_transport(current_mode, &transport) || in_flight.active) {
+	if (in_flight[channel].active) {
-		return false;
-	}
-
-	state = &transport_state[transport];
-
-	if (!state->ready) {
 		return false;
 	}
 
 	if (report_type == KEYBOARD_REPORT_TYPE_KEYS) {
-		return state->keys_ready;
+		return (state->report_ready_bm & BIT(KEYBOARD_REPORT_TYPE_KEYS)) &&
+		       (state->protocol_mode == protocol_mode);
 	}
 
-	return state->consumer_ready;
+	if (channel == HID_SEND_CH_BLE_SHARED) {
+		return (state->report_ready_bm & BIT(KEYBOARD_REPORT_TYPE_CONSUMER)) &&
+		       (state->protocol_mode == KEYBOARD_PROTOCOL_MODE_REPORT);
+	}
+
+	return (state->report_ready_bm & BIT(KEYBOARD_REPORT_TYPE_CONSUMER)) != 0U;
 }
 
-static void submit_hid_tx_report_event(enum hid_transport transport,
+static void try_send_keys(void)
-				       enum keyboard_report_type report_type,
-				       enum keyboard_protocol_mode protocol_mode,
-				       const uint8_t *data, size_t size)
 {
-	struct hid_tx_report_event *event = new_hid_tx_report_event(size);
+	enum hid_send_channel channel;
 
-	event->transport = transport;
+	if (!pending_keys.valid) {
-	event->report_type = report_type;
+		return;
-	event->protocol_mode = protocol_mode;
+	}
-	event->sequence = next_sequence++;
-	memcpy(event->dyndata.data, data, size);
 
-	in_flight.active = true;
+	if (!current_transport_to_channel(KEYBOARD_REPORT_TYPE_KEYS, &channel)) {
-	in_flight.transport = transport;
+		return;
-	in_flight.report_type = report_type;
+	}
-	in_flight.sequence = event->sequence;
 
-	APP_EVENT_SUBMIT(event);
+	if (!channel_can_send_report(channel, pending_keys.report_type,
+				     pending_keys.protocol_mode)) {
+		return;
+	}
+
+	in_flight[channel].active = true;
+	in_flight[channel].channel = channel;
+	in_flight[channel].report_type = pending_keys.report_type;
+	in_flight[channel].sequence = next_sequence++;
+	(void)submit_hid_tx_report_event(channel, pending_keys.report_type,
+					 pending_keys.protocol_mode,
+					 in_flight[channel].sequence,
+					 pending_keys.data, pending_keys.size);
+	pending_keys.valid = false;
+}
+
+static void try_send_consumer_fifo(void)
+{
+	struct queued_report queued;
+	enum hid_send_channel channel;
+
+	if (consumer_fifo_count == 0U) {
+		return;
+	}
+
+	if (!current_transport_to_channel(KEYBOARD_REPORT_TYPE_CONSUMER, &channel)) {
+		return;
+	}
+
+	if (!consumer_fifo_pop(&queued)) {
+		return;
+	}
+
+	if (!channel_can_send_report(channel, queued.report_type,
+				     queued.protocol_mode)) {
+		if (queued.protocol_mode == channel_state[channel].protocol_mode) {
+			consumer_fifo_push(queued.report_type, queued.protocol_mode,
+					   queued.data, queued.size);
+		}
+		return;
+	}
+
+	in_flight[channel].active = true;
+	in_flight[channel].channel = channel;
+	in_flight[channel].report_type = queued.report_type;
+	in_flight[channel].sequence = next_sequence++;
+	(void)submit_hid_tx_report_event(channel, queued.report_type,
+					 queued.protocol_mode,
+					 in_flight[channel].sequence,
+					 queued.data, queued.size);
+}
+
+static void try_send_consumer_latest(void)
+{
+	enum hid_send_channel channel;
+
+	if (!pending_consumer_latest.valid) {
+		return;
+	}
+
+	if (!current_transport_to_channel(KEYBOARD_REPORT_TYPE_CONSUMER, &channel)) {
+		return;
+	}
+
+	if (!channel_can_send_report(channel,
+				     pending_consumer_latest.report_type,
+				     pending_consumer_latest.protocol_mode)) {
+		return;
+	}
+
+	in_flight[channel].active = true;
+	in_flight[channel].channel = channel;
+	in_flight[channel].report_type = pending_consumer_latest.report_type;
+	in_flight[channel].sequence = next_sequence++;
+	(void)submit_hid_tx_report_event(channel,
+					 pending_consumer_latest.report_type,
+					 pending_consumer_latest.protocol_mode,
+					 in_flight[channel].sequence,
+					 pending_consumer_latest.data,
+					 pending_consumer_latest.size);
+	pending_consumer_latest.valid = false;
 }
 
 static void try_send_next(void)
 {
-	struct queued_report queued;
+	if (!running) {
-	enum hid_transport transport;
-	struct hid_transport_state_data *state;
-
-	if (!running || in_flight.active || !mode_to_transport(current_mode, &transport)) {
 		return;
 	}
 
-	state = &transport_state[transport];
+	try_send_keys();
-
+	try_send_consumer_fifo();
-	if (!state->ready) {
+	try_send_consumer_latest();
-		return;
-	}
-
-	if (pending_keys.valid && transport_can_send_report(KEYBOARD_REPORT_TYPE_KEYS)) {
-		if (pending_keys.protocol_mode != state->protocol_mode) {
-			LOG_WRN("Drop stale keys report after protocol change");
-			pending_keys.valid = false;
-		} else {
-			submit_hid_tx_report_event(transport,
-						   pending_keys.report_type,
-						   pending_keys.protocol_mode,
-						   pending_keys.data,
-						   pending_keys.size);
-			pending_keys.valid = false;
-			return;
-		}
-	}
-
-	if ((consumer_fifo_count > 0U) &&
-	    transport_can_send_report(KEYBOARD_REPORT_TYPE_CONSUMER) &&
-	    consumer_fifo_pop(&queued)) {
-		if (queued.protocol_mode != state->protocol_mode) {
-			LOG_WRN("Drop stale consumer report after protocol change");
-		} else {
-			submit_hid_tx_report_event(transport,
-						   queued.report_type,
-						   queued.protocol_mode,
-						   queued.data,
-						   queued.size);
-			return;
-		}
-	}
-
-	if (pending_consumer_latest.valid &&
-	    transport_can_send_report(KEYBOARD_REPORT_TYPE_CONSUMER)) {
-		if (pending_consumer_latest.protocol_mode != state->protocol_mode) {
-			LOG_WRN("Drop stale latest consumer report after protocol change");
-			pending_consumer_latest.valid = false;
-		} else {
-			submit_hid_tx_report_event(transport,
-						   pending_consumer_latest.report_type,
-						   pending_consumer_latest.protocol_mode,
-						   pending_consumer_latest.data,
-						   pending_consumer_latest.size);
-			pending_consumer_latest.valid = false;
-		}
-	}
 }
 
-static bool handle_keyboard_hid_report_event(const struct keyboard_hid_report_event *event)
+static bool handle_keyboard_hid_report_event(
+	const struct keyboard_hid_report_event *event)
 {
 	if (!running ||
 	    ((event->mode != MODE_SWITCH_USB) && (event->mode != MODE_SWITCH_BLE))) {
@@ -267,41 +339,18 @@ static bool handle_keyboard_hid_report_event(const struct keyboard_hid_report_ev
 	return false;
 }
 
-static bool handle_hid_transport_state_event(const struct hid_transport_state_event *event)
+static bool handle_hid_channel_state_event(
+	const struct hid_channel_state_event *event)
 {
-	enum hid_transport active_transport;
+	if (event->channel >= HID_SEND_CH_COUNT) {
-	struct hid_transport_state_data *state;
-
-	if (event->transport >= HID_TRANSPORT_COUNT) {
 		return false;
 	}
 
-	state = &transport_state[event->transport];
+	channel_state[event->channel].report_ready_bm = event->report_ready_bm;
+	channel_state[event->channel].protocol_mode = event->protocol_mode;
 
-	state->ready = event->ready;
+	if (event->report_ready_bm == 0U) {
-	state->keys_ready = event->keys_ready;
+		in_flight[event->channel].active = false;
-	state->consumer_ready = event->consumer_ready;
-
-	if (state->protocol_mode != event->protocol_mode) {
-		state->protocol_mode = event->protocol_mode;
-
-		if (mode_to_transport(current_mode, &active_transport) &&
-		    (active_transport == event->transport)) {
-			pending_keys.valid = false;
-			pending_consumer_latest.valid = false;
-			consumer_fifo_head = 0U;
-			consumer_fifo_tail = 0U;
-			consumer_fifo_count = 0U;
-		}
-	}
-
-	if (!state->ready &&
-	    mode_to_transport(current_mode, &active_transport) &&
-	    (active_transport == event->transport)) {
-		consumer_fifo_head = 0U;
-		consumer_fifo_tail = 0U;
-		consumer_fifo_count = 0U;
-		in_flight.active = false;
 	}
 
 	try_send_next();
@@ -310,17 +359,21 @@ static bool handle_hid_transport_state_event(const struct hid_transport_state_ev
 
 static bool handle_hid_report_sent_event(const struct hid_report_sent_event *event)
 {
-	if (!in_flight.active || (event->transport != in_flight.transport)) {
+	if (event->channel >= HID_SEND_CH_COUNT) {
 		return false;
 	}
 
-	if (event->sequence != in_flight.sequence) {
+	if (!in_flight[event->channel].active) {
+		return false;
+	}
+
+	if (event->sequence != in_flight[event->channel].sequence) {
 		LOG_WRN("Unexpected HID sent sequence %u (expected %u)",
-			event->sequence, in_flight.sequence);
+			event->sequence, in_flight[event->channel].sequence);
 		return false;
 	}
 
-	in_flight.active = false;
+	in_flight[event->channel].active = false;
 
 	if (event->error) {
 		LOG_WRN("HID report send failed for seq %u", event->sequence);
@@ -330,14 +383,15 @@ static bool handle_hid_report_sent_event(const struct hid_report_sent_event *eve
 	return false;
 }
 
-static bool handle_mode_switch_event(const struct mode_switch_event *event)
+static bool handle_transport_policy_event(
+	const struct transport_policy_event *event)
 {
-	bool mode_changed = (current_mode != event->mode);
+	bool transport_changed = (current_transport != event->hid_transport);
 
-	current_mode = event->mode;
+	current_transport = event->hid_transport;
 
-	if (mode_changed || ((current_mode != MODE_SWITCH_USB) &&
+	if (transport_changed ||
-			     (current_mode != MODE_SWITCH_BLE))) {
+	    (current_transport == HID_TRANSPORT_POLICY_NONE)) {
 		clear_pending_reports();
 	}
 
@@ -345,110 +399,86 @@ static bool handle_mode_switch_event(const struct mode_switch_event *event)
 	return false;
 }
 
-static int module_init(void)
+static int do_init(void)
 {
 	clear_pending_reports();
-	current_mode = MODE_SWITCH_USB;
+	current_transport = HID_TRANSPORT_POLICY_USB;
-	transport_state[HID_TRANSPORT_USB].ready = false;
+	memset(channel_state, 0, sizeof(channel_state));
-	transport_state[HID_TRANSPORT_USB].keys_ready = false;
+	channel_state[HID_SEND_CH_USB_KEYS].protocol_mode =
-	transport_state[HID_TRANSPORT_USB].consumer_ready = false;
-	transport_state[HID_TRANSPORT_USB].protocol_mode =
 		KEYBOARD_PROTOCOL_MODE_REPORT;
-	transport_state[HID_TRANSPORT_BLE].ready = false;
+	channel_state[HID_SEND_CH_USB_CONSUMER].protocol_mode =
-	transport_state[HID_TRANSPORT_BLE].keys_ready = false;
+		KEYBOARD_PROTOCOL_MODE_REPORT;
-	transport_state[HID_TRANSPORT_BLE].consumer_ready = false;
+	channel_state[HID_SEND_CH_BLE_SHARED].protocol_mode =
-	transport_state[HID_TRANSPORT_BLE].protocol_mode =
 		KEYBOARD_PROTOCOL_MODE_REPORT;
 	next_sequence = 1U;
-
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	if (running) {
 		return 0;
 	}
 
-	running = true;
 	try_send_next();
-
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
 	if (!running) {
-		return;
+		return 0;
 	}
 
 	clear_pending_reports();
-	running = false;
+
+	return 0;
 }
 
 static bool app_event_handler(const struct app_event_header *aeh)
 {
 	if (is_keyboard_hid_report_event(aeh)) {
-		return handle_keyboard_hid_report_event(cast_keyboard_hid_report_event(aeh));
+		return handle_keyboard_hid_report_event(
+			cast_keyboard_hid_report_event(aeh));
 	}
 
-	if (is_hid_transport_state_event(aeh)) {
+	if (is_hid_channel_state_event(aeh)) {
-		return handle_hid_transport_state_event(cast_hid_transport_state_event(aeh));
+		return handle_hid_channel_state_event(
+			cast_hid_channel_state_event(aeh));
 	}
 
 	if (is_hid_report_sent_event(aeh)) {
-		return handle_hid_report_sent_event(cast_hid_report_sent_event(aeh));
+		return handle_hid_report_sent_event(
+			cast_hid_report_sent_event(aeh));
 	}
 
-	if (is_mode_switch_event(aeh)) {
+	if (is_transport_policy_event(aeh)) {
-		return handle_mode_switch_event(cast_mode_switch_event(aeh));
+		return handle_transport_policy_event(
+			cast_transport_policy_event(aeh));
 	}
 
 	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
+		const struct module_state_event *event =
+			cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)module_set_lifecycle(&lifecycle, LC_RUNNING);
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&lifecycle)) {
-			module_pause();
+			(void)module_set_lifecycle(&lifecycle, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&lifecycle)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&lifecycle, LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
@@ -460,9 +490,9 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, keyboard_hid_report_event);
-APP_EVENT_SUBSCRIBE(MODULE, hid_transport_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_channel_state_event);
 APP_EVENT_SUBSCRIBE(MODULE, hid_report_sent_event);
-APP_EVENT_SUBSCRIBE(MODULE, mode_switch_event);
+APP_EVENT_SUBSCRIBE(MODULE, transport_policy_event);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/keyboard_core_module.c

@@ -15,10 +15,13 @@
 #include <zephyr/sys/util.h>
 
 #include "encoder_event.h"
+#include "function_bitmap_state_event.h"
+#include "function_bitmap_update_event.h"
 #include "keyboard_core.h"
 #include "keyboard_hid_report_event.h"
-#include "mode_switch_event.h"
+#include "module_lifecycle.h"
 #include "set_protocol_event.h"
+#include "transport_policy_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
@@ -39,8 +42,8 @@ struct keymap_entry {
 };
 
 struct keyboard_state {
-	uint8_t modifiers;
+	uint8_t pressed_usage_bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
-	uint8_t keys_bitmap[KEYBOARD_NKRO_BITMAP_BYTES];
+	uint8_t function_pressed_bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
 	uint32_t consumer_bits;
 };
 
@@ -83,25 +86,61 @@ static const uint16_t consumer_usage_map[KEYBOARD_CONSUMER_CTRL_COUNT] = {
 	[KEYBOARD_CONSUMER_CTRL_PREV_TRACK] = 0x00B6,
 };
 
-static struct keyboard_state keyboard_state;
+struct keyboard_core_module_ctx {
-static struct keyboard_reports_cache reports_cache;
+	struct module_lifecycle_ctx lc;
-static enum keyboard_protocol_mode transport_protocol_modes[HID_TRANSPORT_COUNT] = {
+	struct keyboard_state keyboard_state;
-	[HID_TRANSPORT_USB] = KEYBOARD_PROTOCOL_MODE_REPORT,
+	struct keyboard_reports_cache reports_cache;
-	[HID_TRANSPORT_BLE] = KEYBOARD_PROTOCOL_MODE_REPORT,
+	uint8_t function_usage_mask[KEYBOARD_PROTOCOL_BITMAP_BYTES];
+	enum keyboard_protocol_mode transport_protocol_modes[HID_TRANSPORT_COUNT];
+	enum hid_transport_policy current_transport;
+	bool mode_valid;
 };
-static enum mode_switch_mode current_mode;
-static bool initialized;
-static bool running;
-static bool mode_valid;
 
-static bool mode_to_transport(enum mode_switch_mode mode, enum hid_transport *transport)
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct keyboard_core_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.transport_protocol_modes = {
+		[HID_TRANSPORT_USB] = KEYBOARD_PROTOCOL_MODE_REPORT,
+		[HID_TRANSPORT_BLE] = KEYBOARD_PROTOCOL_MODE_REPORT,
+	},
+};
+
+#define lifecycle ctx.lc
+#define keyboard_state ctx.keyboard_state
+#define reports_cache ctx.reports_cache
+#define function_usage_mask ctx.function_usage_mask
+#define transport_protocol_modes ctx.transport_protocol_modes
+#define current_transport ctx.current_transport
+#define mode_valid ctx.mode_valid
+#define running module_lifecycle_is_running(&ctx.lc)
+
+static bool policy_to_transport(enum hid_transport_policy policy,
+				enum hid_transport *transport)
 {
-	switch (mode) {
+	switch (policy) {
-	case MODE_SWITCH_USB:
+	case HID_TRANSPORT_POLICY_USB:
 		*transport = HID_TRANSPORT_USB;
 		return true;
 
-	case MODE_SWITCH_BLE:
+	case HID_TRANSPORT_POLICY_BLE:
 		*transport = HID_TRANSPORT_BLE;
 		return true;
 
@@ -114,13 +153,32 @@ static enum keyboard_protocol_mode active_protocol_mode_get(void)
 {
 	enum hid_transport transport;
 
-	if (mode_valid && mode_to_transport(current_mode, &transport)) {
+	if (mode_valid && policy_to_transport(current_transport, &transport)) {
 		return transport_protocol_modes[transport];
 	}
 
 	return KEYBOARD_PROTOCOL_MODE_REPORT;
 }
 
+static bool transport_policy_to_mode(enum hid_transport_policy policy,
+				     enum mode_switch_mode *mode)
+{
+	if (mode == NULL) {
+		return false;
+	}
+
+	switch (policy) {
+	case HID_TRANSPORT_POLICY_USB:
+		*mode = MODE_SWITCH_USB;
+		return true;
+	case HID_TRANSPORT_POLICY_BLE:
+		*mode = MODE_SWITCH_BLE;
+		return true;
+	default:
+		return false;
+	}
+}
+
 static const struct keymap_entry *keymap_get(uint16_t key_id)
 {
 	size_t left = 0;
@@ -143,40 +201,61 @@ static const struct keymap_entry *keymap_get(uint16_t key_id)
 	return NULL;
 }
 
-static bool usage_is_modifier(uint16_t usage_id)
+static bool usage_to_bitmap_pos(uint16_t usage_id, uint8_t *byte_idx,
+				uint8_t *bit_idx)
 {
-	return IN_RANGE(usage_id, KEYBOARD_USAGE_FIRST_MODIFIER,
+	if ((byte_idx == NULL) || (bit_idx == NULL)) {
-			KEYBOARD_USAGE_LAST_MODIFIER);
+		return false;
-}
+	}
 
-static bool keyboard_key_update(uint16_t usage_id, bool pressed)
+	if ((usage_id >= KEYBOARD_USAGE_FIRST_MODIFIER) &&
-{
+	    (usage_id <= KEYBOARD_USAGE_LAST_MODIFIER)) {
-	if (usage_is_modifier(usage_id)) {
+		*byte_idx = 0U;
-		uint8_t new_modifiers = keyboard_state.modifiers;
+		*bit_idx = (uint8_t)(usage_id - KEYBOARD_USAGE_FIRST_MODIFIER);
-
-		WRITE_BIT(new_modifiers, usage_id - KEYBOARD_USAGE_FIRST_MODIFIER, pressed);
-		if (new_modifiers == keyboard_state.modifiers) {
-			return false;
-		}
-
-		keyboard_state.modifiers = new_modifiers;
 		return true;
 	}
 
-	if (usage_id > KEYBOARD_NKRO_USAGE_MAX) {
+	if (usage_id <= KEYBOARD_NKRO_USAGE_MAX) {
+		*byte_idx = (uint8_t)(1U + (usage_id / 8U));
+		*bit_idx = (uint8_t)(usage_id % 8U);
+		return true;
+	}
+
+	return false;
+}
+
+static bool usage_bitmap_test(const uint8_t *bitmap, uint16_t usage_id)
+{
+	uint8_t byte_idx;
+	uint8_t bit_idx;
+
+	if ((bitmap == NULL) ||
+	    !usage_to_bitmap_pos(usage_id, &byte_idx, &bit_idx)) {
+		return false;
+	}
+
+	return (bitmap[byte_idx] & BIT(bit_idx)) != 0U;
+}
+
+static bool usage_bitmap_write(uint8_t *bitmap, uint16_t usage_id, bool pressed)
+{
+	uint8_t byte_idx;
+	uint8_t bit_idx;
+	bool was_pressed;
+
+	if ((bitmap == NULL) ||
+	    !usage_to_bitmap_pos(usage_id, &byte_idx, &bit_idx)) {
 		LOG_WRN("Unsupported keyboard usage 0x%04x", usage_id);
 		return false;
 	}
 
-	uint8_t byte_idx = usage_id / 8U;
+	was_pressed = (bitmap[byte_idx] & BIT(bit_idx)) != 0U;
-	uint8_t bit_idx = usage_id % 8U;
-	bool was_pressed = (keyboard_state.keys_bitmap[byte_idx] & BIT(bit_idx)) != 0U;
 
 	if (was_pressed == pressed) {
 		return false;
 	}
 
-	WRITE_BIT(keyboard_state.keys_bitmap[byte_idx], bit_idx, pressed);
+	WRITE_BIT(bitmap[byte_idx], bit_idx, pressed);
 	return true;
 }
 
@@ -202,6 +281,11 @@ static void keyboard_state_clear(void)
 	memset(&keyboard_state, 0, sizeof(keyboard_state));
 }
 
+static void function_usage_mask_clear(void)
+{
+	memset(function_usage_mask, 0, sizeof(function_usage_mask));
+}
+
 static void reports_cache_invalidate(void)
 {
 	reports_cache.boot_valid = false;
@@ -209,19 +293,31 @@ static void reports_cache_invalidate(void)
 	reports_cache.consumer_valid = false;
 }
 
+static void build_effective_hid_bitmap(uint8_t bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES])
+{
+	for (size_t i = 0; i < KEYBOARD_PROTOCOL_BITMAP_BYTES; i++) {
+		bitmap[i] = keyboard_state.pressed_usage_bitmap[i] &
+			    (uint8_t)~keyboard_state.function_pressed_bitmap[i];
+	}
+}
+
 static void build_boot_report(uint8_t report[KEYBOARD_BOOT_REPORT_SIZE])
 {
+	uint8_t effective_hid_bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
 	size_t key_count = 0;
 
+	build_effective_hid_bitmap(effective_hid_bitmap);
 	memset(report, 0, KEYBOARD_BOOT_REPORT_SIZE);
-	report[0] = keyboard_state.modifiers;
+	report[0] = effective_hid_bitmap[0];
 	report[1] = KEYBOARD_BOOT_RESERVED_BYTE;
 
 	for (uint16_t usage_id = 0; usage_id <= KEYBOARD_NKRO_USAGE_MAX; usage_id++) {
-		uint8_t byte_idx = usage_id / 8U;
+		uint8_t byte_idx;
-		uint8_t bit_idx = usage_id % 8U;
+		uint8_t bit_idx;
 
-		if ((keyboard_state.keys_bitmap[byte_idx] & BIT(bit_idx)) == 0U) {
+		(void)usage_to_bitmap_pos(usage_id, &byte_idx, &bit_idx);
+
+		if ((effective_hid_bitmap[byte_idx] & BIT(bit_idx)) == 0U) {
 			continue;
 		}
 
@@ -238,8 +334,11 @@ static void build_boot_report(uint8_t report[KEYBOARD_BOOT_REPORT_SIZE])
 
 static void build_nkro_report(uint8_t report[KEYBOARD_NKRO_REPORT_SIZE])
 {
-	report[0] = keyboard_state.modifiers;
+	uint8_t effective_hid_bitmap[KEYBOARD_PROTOCOL_BITMAP_BYTES];
-	memcpy(&report[1], keyboard_state.keys_bitmap, KEYBOARD_NKRO_BITMAP_BYTES);
+
+	build_effective_hid_bitmap(effective_hid_bitmap);
+	report[0] = effective_hid_bitmap[0];
+	memcpy(&report[1], &effective_hid_bitmap[1], KEYBOARD_NKRO_BITMAP_BYTES);
 }
 
 static uint16_t active_consumer_usage_get(void)
@@ -258,38 +357,22 @@ static void build_consumer_report(uint8_t report[KEYBOARD_CONSUMER_REPORT_SIZE])
 	sys_put_le16(active_consumer_usage_get(), report);
 }
 
-static void submit_keyboard_report_event(enum keyboard_report_type report_type,
-					 enum hid_queue_policy queue_policy,
-					 const uint8_t *data, size_t size)
-{
-	struct keyboard_hid_report_event *event =
-		new_keyboard_hid_report_event(size);
-	enum keyboard_protocol_mode protocol_mode = active_protocol_mode_get();
-
-	event->mode = current_mode;
-	event->report_type = report_type;
-	event->protocol_mode = protocol_mode;
-	event->queue_policy = queue_policy;
-	memcpy(event->dyndata.data, data, size);
-
-	APP_EVENT_SUBMIT(event);
-}
-
 static void submit_consumer_fifo_frame(uint16_t usage_id)
 {
 	uint8_t report_buf[KEYBOARD_CONSUMER_REPORT_SIZE];
 	enum keyboard_protocol_mode protocol_mode = active_protocol_mode_get();
+	enum mode_switch_mode mode;
 
 	if (!running || !mode_valid ||
+	    !transport_policy_to_mode(current_transport, &mode) ||
 	    (protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT)) {
 		return;
 	}
 
 	sys_put_le16(usage_id, report_buf);
-	submit_keyboard_report_event(KEYBOARD_REPORT_TYPE_CONSUMER,
+	(void)submit_keyboard_hid_report_event(
-				     HID_QUEUE_POLICY_FIFO,
+		mode, KEYBOARD_REPORT_TYPE_CONSUMER, protocol_mode,
-				     report_buf,
+		HID_QUEUE_POLICY_FIFO, report_buf, KEYBOARD_CONSUMER_REPORT_SIZE);
-				     KEYBOARD_CONSUMER_REPORT_SIZE);
 }
 
 static void submit_consumer_pulse_frames(enum keyboard_consumer_control control_id,
@@ -325,8 +408,9 @@ static void emit_keys_report(bool force)
 	uint8_t *cache_buf;
 	bool *cache_valid;
 	enum keyboard_protocol_mode protocol_mode = active_protocol_mode_get();
+	enum mode_switch_mode mode;
 
-	if (!mode_valid) {
+	if (!mode_valid || !transport_policy_to_mode(current_transport, &mode)) {
 		return;
 	}
 
@@ -349,18 +433,19 @@ static void emit_keys_report(bool force)
 	memcpy(cache_buf, report_buf, report_size);
 	*cache_valid = true;
 
-	submit_keyboard_report_event(KEYBOARD_REPORT_TYPE_KEYS,
+	(void)submit_keyboard_hid_report_event(
-				     HID_QUEUE_POLICY_LATEST,
+		mode, KEYBOARD_REPORT_TYPE_KEYS, protocol_mode,
-				     report_buf,
+		HID_QUEUE_POLICY_LATEST, report_buf, report_size);
-				     report_size);
 }
 
 static void emit_consumer_report(bool force)
 {
 	uint8_t report_buf[KEYBOARD_CONSUMER_REPORT_SIZE];
 	enum keyboard_protocol_mode protocol_mode = active_protocol_mode_get();
+	enum mode_switch_mode mode;
 
-	if (!mode_valid || (protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT)) {
+	if (!mode_valid || !transport_policy_to_mode(current_transport, &mode) ||
+	    (protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT)) {
 		return;
 	}
 
@@ -374,10 +459,10 @@ static void emit_consumer_report(bool force)
 	memcpy(reports_cache.consumer_report, report_buf, KEYBOARD_CONSUMER_REPORT_SIZE);
 	reports_cache.consumer_valid = true;
 
-	submit_keyboard_report_event(KEYBOARD_REPORT_TYPE_CONSUMER,
+	(void)submit_keyboard_hid_report_event(
-				     HID_QUEUE_POLICY_LATEST,
+		mode, KEYBOARD_REPORT_TYPE_CONSUMER, protocol_mode,
-				     report_buf,
+		HID_QUEUE_POLICY_LATEST, report_buf,
-				     KEYBOARD_CONSUMER_REPORT_SIZE);
+		KEYBOARD_CONSUMER_REPORT_SIZE);
 }
 
 static void emit_all_reports(bool force)
@@ -389,38 +474,49 @@ static void emit_all_reports(bool force)
 	}
 }
 
-static void emit_release_reports(enum mode_switch_mode mode)
+static void emit_function_state_event(void)
+{
+	(void)submit_function_bitmap_state_event(keyboard_state.pressed_usage_bitmap);
+}
+
+static void emit_release_reports(enum hid_transport_policy transport_policy)
 {
-	struct keyboard_hid_report_event *event;
 	uint8_t keys_report[KEYBOARD_NKRO_REPORT_SIZE] = { 0 };
 	uint8_t consumer_report[KEYBOARD_CONSUMER_REPORT_SIZE] = { 0 };
 	enum keyboard_protocol_mode protocol_mode = active_protocol_mode_get();
+	enum mode_switch_mode mode;
 	size_t keys_report_size =
 		(protocol_mode == KEYBOARD_PROTOCOL_MODE_BOOT) ?
 			KEYBOARD_BOOT_REPORT_SIZE : KEYBOARD_NKRO_REPORT_SIZE;
 
-	event = new_keyboard_hid_report_event(keys_report_size);
+	switch (transport_policy) {
-	event->mode = mode;
+	case HID_TRANSPORT_POLICY_USB:
-	event->report_type = KEYBOARD_REPORT_TYPE_KEYS;
+		mode = MODE_SWITCH_USB;
-	event->protocol_mode = protocol_mode;
+		break;
-	memcpy(event->dyndata.data, keys_report, keys_report_size);
+	case HID_TRANSPORT_POLICY_BLE:
-	APP_EVENT_SUBMIT(event);
+		mode = MODE_SWITCH_BLE;
+		break;
+	default:
+		return;
+	}
+
+	(void)submit_keyboard_hid_report_event(
+		mode, KEYBOARD_REPORT_TYPE_KEYS, protocol_mode,
+		HID_QUEUE_POLICY_LATEST, keys_report, keys_report_size);
 
 	if (protocol_mode != KEYBOARD_PROTOCOL_MODE_BOOT) {
-		event = new_keyboard_hid_report_event(KEYBOARD_CONSUMER_REPORT_SIZE);
+		(void)submit_keyboard_hid_report_event(
-		event->mode = mode;
+			mode, KEYBOARD_REPORT_TYPE_CONSUMER, protocol_mode,
-		event->report_type = KEYBOARD_REPORT_TYPE_CONSUMER;
+			HID_QUEUE_POLICY_LATEST, consumer_report,
-		event->protocol_mode = protocol_mode;
+			KEYBOARD_CONSUMER_REPORT_SIZE);
-		memcpy(event->dyndata.data, consumer_report,
-		       KEYBOARD_CONSUMER_REPORT_SIZE);
-		APP_EVENT_SUBMIT(event);
 	}
 }
 
-static int module_init(void)
+static int do_init(void)
 {
 	keyboard_state_clear();
 	reports_cache_invalidate();
+	function_usage_mask_clear();
 	mode_valid = false;
 	transport_protocol_modes[HID_TRANSPORT_USB] =
 		KEYBOARD_PROTOCOL_MODE_REPORT;
@@ -430,30 +526,31 @@ static int module_init(void)
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	if (running) {
 		return 0;
 	}
 
-	running = true;
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
 	if (!running) {
-		return;
+		return 0;
 	}
 
 	if (mode_valid) {
-		emit_release_reports(current_mode);
+		emit_release_reports(current_transport);
 	}
+	emit_function_state_event();
 
 	keyboard_state_clear();
 	reports_cache_invalidate();
 	mode_valid = false;
-	running = false;
+
+	return 0;
 }
 
 static bool handle_button_event(const struct button_event *event)
@@ -472,8 +569,30 @@ static bool handle_button_event(const struct button_event *event)
 	}
 
 	if (entry->usage_type == KEY_USAGE_TYPE_KEYBOARD) {
-		changed = keyboard_key_update(entry->usage_id, event->pressed);
+		bool routed_to_function;
-		if (changed) {
+
+		changed = usage_bitmap_write(keyboard_state.pressed_usage_bitmap,
+						entry->usage_id, event->pressed);
+		if (!changed) {
+			return false;
+		}
+
+		if (event->pressed) {
+			routed_to_function =
+				usage_bitmap_test(function_usage_mask, entry->usage_id);
+			(void)usage_bitmap_write(keyboard_state.function_pressed_bitmap,
+						 entry->usage_id, routed_to_function);
+		} else {
+			routed_to_function =
+				usage_bitmap_test(keyboard_state.function_pressed_bitmap,
+						  entry->usage_id);
+			(void)usage_bitmap_write(keyboard_state.function_pressed_bitmap,
+						 entry->usage_id, false);
+		}
+
+		if (routed_to_function) {
+			emit_function_state_event();
+		} else {
 			emit_keys_report(false);
 		}
 	} else {
@@ -486,25 +605,30 @@ static bool handle_button_event(const struct button_event *event)
 	return false;
 }
 
-static bool handle_mode_switch_event(const struct mode_switch_event *event)
+static bool handle_transport_policy_event(
+	const struct transport_policy_event *event)
 {
-	bool mode_changed;
+	bool transport_changed;
 
 	if (!running) {
-		current_mode = event->mode;
+		current_transport = event->hid_transport;
 		return false;
 	}
 
-	mode_changed = mode_valid && (current_mode != event->mode);
+	transport_changed = mode_valid && (current_transport != event->hid_transport);
-	if (mode_changed) {
+	if (transport_changed) {
-		emit_release_reports(current_mode);
+		emit_release_reports(current_transport);
+		emit_function_state_event();
 		keyboard_state_clear();
 		reports_cache_invalidate();
 	}
 
-	current_mode = event->mode;
+	current_transport = event->hid_transport;
-	mode_valid = true;
+	mode_valid = (current_transport != HID_TRANSPORT_POLICY_NONE);
-	emit_all_reports(true);
+
+	if (mode_valid) {
+		emit_all_reports(true);
+	}
 
 	return false;
 }
@@ -526,6 +650,13 @@ static bool handle_encoder_event(const struct encoder_event *event)
 	return false;
 }
 
+static bool handle_function_bitmap_update_event(
+	const struct function_bitmap_update_event *event)
+{
+	memcpy(function_usage_mask, event->bitmap, sizeof(function_usage_mask));
+	return false;
+}
+
 static bool app_event_handler(const struct app_event_header *aeh)
 {
 	if (is_button_event(aeh)) {
@@ -536,6 +667,11 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		return handle_encoder_event(cast_encoder_event(aeh));
 	}
 
+	if (is_function_bitmap_update_event(aeh)) {
+		return handle_function_bitmap_update_event(
+			cast_function_bitmap_update_event(aeh));
+	}
+
 	if (is_set_protocol_event(aeh)) {
 		const struct set_protocol_event *event = cast_set_protocol_event(aeh);
 		enum hid_transport active_transport;
@@ -548,7 +684,7 @@ static bool app_event_handler(const struct app_event_header *aeh)
 			transport_protocol_modes[event->transport] = event->protocol_mode;
 
 			if (running && mode_valid &&
-			    mode_to_transport(current_mode, &active_transport) &&
+			    policy_to_transport(current_transport, &active_transport) &&
 			    (active_transport == event->transport)) {
 				reports_cache_invalidate();
 				emit_keys_report(true);
@@ -562,55 +698,32 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		return false;
 	}
 
-	if (is_mode_switch_event(aeh)) {
+	if (is_transport_policy_event(aeh)) {
-		return handle_mode_switch_event(cast_mode_switch_event(aeh));
+		return handle_transport_policy_event(
+			cast_transport_policy_event(aeh));
 	}
 
 	if (is_module_state_event(aeh)) {
 		const struct module_state_event *event = cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)module_set_lifecycle(&lifecycle, LC_RUNNING);
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&lifecycle)) {
-			module_pause();
+			(void)module_set_lifecycle(&lifecycle, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&lifecycle)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&lifecycle, LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
@@ -623,8 +736,9 @@ static bool app_event_handler(const struct app_event_header *aeh)
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, button_event);
 APP_EVENT_SUBSCRIBE(MODULE, encoder_event);
+APP_EVENT_SUBSCRIBE(MODULE, function_bitmap_update_event);
 APP_EVENT_SUBSCRIBE(MODULE, set_protocol_event);
-APP_EVENT_SUBSCRIBE(MODULE, mode_switch_event);
+APP_EVENT_SUBSCRIBE(MODULE, transport_policy_event);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/led_effect/effects/led_effect_key_fade.c

@@ -0,0 +1,155 @@
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <zephyr/sys/util.h>
+
+#include "led_effect/led_effect.h"
+
+#define KEY_FADE_LEVEL_MAX 255U
+#define KEY_FADE_STEP_PER_TICK 12U
+
+struct led_effect_key_fade_state {
+	const struct led_key_map *key_map;
+	size_t key_map_len;
+	size_t pixel_count;
+	uint8_t default_brightness;
+	uint8_t level[17];
+	struct theme_rgb theme;
+};
+
+static struct led_effect_key_fade_state key_fade_state;
+
+static const struct led_key_map *find_key(const struct led_effect *effect,
+					  uint16_t key_id)
+{
+	const struct led_effect_key_fade_state *state = effect->state;
+
+	for (size_t i = 0; i < state->key_map_len; i++) {
+		if (state->key_map[i].key_id == key_id) {
+			return &state->key_map[i];
+		}
+	}
+
+	return NULL;
+}
+
+static int led_effect_key_fade_init(struct led_effect *effect,
+				    const struct led_effect_config *cfg)
+{
+	struct led_effect_key_fade_state *state = effect->state;
+
+	if ((effect == NULL) || (cfg == NULL) || (cfg->key_map == NULL) ||
+	    (cfg->pixel_count > ARRAY_SIZE(state->level))) {
+		return -EINVAL;
+	}
+
+	memset(state, 0, sizeof(*state));
+	state->key_map = cfg->key_map;
+	state->key_map_len = cfg->key_map_len;
+	state->pixel_count = cfg->pixel_count;
+	state->default_brightness = cfg->default_brightness;
+	state->theme.r = BLINKY_THEME_DEFAULT_R;
+	state->theme.g = BLINKY_THEME_DEFAULT_G;
+	state->theme.b = BLINKY_THEME_DEFAULT_B;
+
+	return 0;
+}
+
+static void led_effect_key_fade_reset(struct led_effect *effect)
+{
+	struct led_effect_key_fade_state *state = effect->state;
+
+	memset(state->level, 0, sizeof(state->level));
+}
+
+static void led_effect_key_fade_set_theme(struct led_effect *effect,
+					  const struct theme_rgb *theme)
+{
+	struct led_effect_key_fade_state *state = effect->state;
+
+	if (theme == NULL) {
+		return;
+	}
+
+	state->theme = *theme;
+}
+
+static void led_effect_key_fade_on_key_press(struct led_effect *effect,
+					     uint16_t key_id)
+{
+	struct led_effect_key_fade_state *state = effect->state;
+	const struct led_key_map *map = find_key(effect, key_id);
+
+	if ((map == NULL) || (map->led_idx >= state->pixel_count)) {
+		return;
+	}
+
+	state->level[map->led_idx] =
+		(state->default_brightness == 0U) ? KEY_FADE_LEVEL_MAX :
+						    state->default_brightness;
+}
+
+static bool led_effect_key_fade_tick(struct led_effect *effect, uint32_t dt_ms,
+				     struct led_rgb *pixels, size_t pixel_count)
+{
+	struct led_effect_key_fade_state *state = effect->state;
+	bool active = false;
+	bool visible = false;
+	uint8_t decay;
+
+	ARG_UNUSED(dt_ms);
+
+	if ((pixels == NULL) || (pixel_count < state->pixel_count)) {
+		return false;
+	}
+
+	memset(pixels, 0, sizeof(*pixels) * pixel_count);
+	decay = KEY_FADE_STEP_PER_TICK;
+
+	for (size_t i = 0; i < state->pixel_count; i++) {
+		uint8_t level = state->level[i];
+
+		if (level == 0U) {
+			continue;
+		}
+
+		visible = true;
+		pixels[i].r = (uint8_t)(((uint16_t)state->theme.r * level) / 255U);
+		pixels[i].g = (uint8_t)(((uint16_t)state->theme.g * level) / 255U);
+		pixels[i].b = (uint8_t)(((uint16_t)state->theme.b * level) / 255U);
+
+		state->level[i] = (level > decay) ? (uint8_t)(level - decay) : 0U;
+		active = active || (state->level[i] > 0U);
+	}
+
+	return visible || active;
+}
+
+static bool led_effect_key_fade_is_active(const struct led_effect *effect)
+{
+	const struct led_effect_key_fade_state *state = effect->state;
+
+	for (size_t i = 0; i < state->pixel_count; i++) {
+		if (state->level[i] > 0U) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+static const struct led_effect_ops key_fade_ops = {
+	.init = led_effect_key_fade_init,
+	.reset = led_effect_key_fade_reset,
+	.set_theme = led_effect_key_fade_set_theme,
+	.on_key_press = led_effect_key_fade_on_key_press,
+	.tick = led_effect_key_fade_tick,
+	.is_active = led_effect_key_fade_is_active,
+};
+
+struct led_effect led_effect_key_fade = {
+	.ops = &key_fade_ops,
+	.state = &key_fade_state,
+};

src/led_effect/led_effect.h

@@ -0,0 +1,50 @@
+#ifndef BLINKY_LED_EFFECT_H_
+#define BLINKY_LED_EFFECT_H_
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+#include <zephyr/drivers/led_strip.h>
+
+#include "led_effect_types.h"
+#include "theme_color.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct led_effect;
+
+struct led_effect_config {
+	const struct led_key_map *key_map;
+	size_t key_map_len;
+	size_t pixel_count;
+	uint8_t default_brightness;
+};
+
+struct led_effect_ops {
+	int (*init)(struct led_effect *effect,
+		    const struct led_effect_config *cfg);
+	void (*reset)(struct led_effect *effect);
+	void (*set_theme)(struct led_effect *effect,
+			  const struct theme_rgb *theme);
+	void (*on_key_press)(struct led_effect *effect, uint16_t key_id);
+	bool (*tick)(struct led_effect *effect, uint32_t dt_ms,
+		     struct led_rgb *pixels, size_t pixel_count);
+	bool (*is_active)(const struct led_effect *effect);
+};
+
+struct led_effect {
+	const struct led_effect_ops *ops;
+	void *state;
+};
+
+const struct led_effect *led_effect_get(enum led_effect_id id);
+struct led_effect *led_effect_get_mutable(enum led_effect_id id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_LED_EFFECT_H_ */

src/led_effect/led_effect_registry.c

@@ -0,0 +1,27 @@
+#include <stddef.h>
+
+#include "led_effect.h"
+
+extern struct led_effect led_effect_key_fade;
+
+static struct led_effect *const effect_registry[LED_EFFECT_ID_COUNT] = {
+	[LED_EFFECT_ID_KEY_FADE] = &led_effect_key_fade,
+};
+
+const struct led_effect *led_effect_get(enum led_effect_id id)
+{
+	if (id >= LED_EFFECT_ID_COUNT) {
+		return NULL;
+	}
+
+	return effect_registry[id];
+}
+
+struct led_effect *led_effect_get_mutable(enum led_effect_id id)
+{
+	if (id >= LED_EFFECT_ID_COUNT) {
+		return NULL;
+	}
+
+	return effect_registry[id];
+}

src/led_effect/led_effect_types.h

@@ -0,0 +1,24 @@
+#ifndef BLINKY_LED_EFFECT_TYPES_H_
+#define BLINKY_LED_EFFECT_TYPES_H_
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct led_key_map {
+	uint16_t key_id;
+	uint8_t led_idx;
+};
+
+enum led_effect_id {
+	LED_EFFECT_ID_KEY_FADE = 0,
+	LED_EFFECT_ID_COUNT,
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_LED_EFFECT_TYPES_H_ */

src/led_strip_module.c

@@ -0,0 +1,370 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+
+#define MODULE led_strip_module
+#include <caf/events/button_event.h>
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.h>
+#include <caf/key_id.h>
+
+#include <zephyr/device.h>
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/drivers/led_strip.h>
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+
+#include "led_effect/led_effect.h"
+#include "led_strip_en_event.h"
+#include "module_lifecycle.h"
+#include "theme_rgb_update_event.h"
+#include "theme_color.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+#define LED_STRIP_NODE DT_CHOSEN(zephyr_led_strip)
+#define LED_STRIP_NUM_PIXELS DT_PROP(LED_STRIP_NODE, chain_length)
+#define LED_STRIP_TICK_INTERVAL K_MSEC(20)
+
+BUILD_ASSERT(DT_NODE_HAS_STATUS(LED_STRIP_NODE, okay),
+	     "Missing zephyr,led-strip chosen node");
+BUILD_ASSERT(DT_NODE_HAS_PROP(LED_STRIP_NODE, supply_gpios),
+	     "Missing supply-gpios on zephyr,led-strip node");
+BUILD_ASSERT(LED_STRIP_NUM_PIXELS == 17U,
+	     "LED strip key map expects 17 pixels");
+
+struct led_strip_module_ctx {
+	struct module_lifecycle_ctx lc;
+	const struct device *strip;
+	struct gpio_dt_spec strip_en;
+	struct led_rgb pixels[LED_STRIP_NUM_PIXELS];
+	struct k_work_delayable effect_work;
+	struct led_effect *effect;
+	struct theme_rgb current_theme;
+	bool enabled;
+};
+
+static const struct led_key_map led_key_map[] = {
+	{ KEY_ID(0, 1), 0U },
+	{ KEY_ID(1, 1), 1U },
+	{ KEY_ID(2, 1), 2U },
+	{ KEY_ID(3, 1), 3U },
+	{ KEY_ID(0, 2), 4U },
+	{ KEY_ID(1, 2), 5U },
+	{ KEY_ID(2, 2), 6U },
+	{ KEY_ID(0, 3), 7U },
+	{ KEY_ID(1, 3), 8U },
+	{ KEY_ID(2, 3), 9U },
+	{ KEY_ID(3, 3), 10U },
+	{ KEY_ID(0, 4), 11U },
+	{ KEY_ID(1, 4), 12U },
+	{ KEY_ID(2, 4), 13U },
+	{ KEY_ID(0, 5), 14U },
+	{ KEY_ID(1, 5), 15U },
+	{ KEY_ID(3, 5), 16U },
+};
+
+static const struct led_effect_config effect_cfg = {
+	.key_map = led_key_map,
+	.key_map_len = ARRAY_SIZE(led_key_map),
+	.pixel_count = LED_STRIP_NUM_PIXELS,
+	.default_brightness = 0xFFU,
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct led_strip_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.strip = DEVICE_DT_GET(LED_STRIP_NODE),
+	.strip_en = GPIO_DT_SPEC_GET(LED_STRIP_NODE, supply_gpios),
+	.current_theme = {
+		.r = BLINKY_THEME_DEFAULT_R,
+		.g = BLINKY_THEME_DEFAULT_G,
+		.b = BLINKY_THEME_DEFAULT_B,
+	},
+	.enabled = true,
+};
+
+static void clear_pixels(void)
+{
+	memset(ctx.pixels, 0, sizeof(ctx.pixels));
+}
+
+static int submit_frame(void)
+{
+	int err;
+
+	err = led_strip_update_rgb(ctx.strip, ctx.pixels, ARRAY_SIZE(ctx.pixels));
+	if (err) {
+		LOG_WRN("led_strip_update_rgb failed (%d)", err);
+	}
+
+	return err;
+}
+
+static int set_strip_power(bool on)
+{
+	int err;
+
+	err = gpio_pin_set_dt(&ctx.strip_en, on ? 1 : 0);
+	if (err) {
+		LOG_WRN("LED strip EN set failed (%d)", err);
+	}
+
+	return err;
+}
+
+static int refresh_idle_frame(void)
+{
+	clear_pixels();
+	return submit_frame();
+}
+
+static void stop_effect_work(void)
+{
+	k_work_cancel_delayable(&ctx.effect_work);
+}
+
+static void schedule_effect_tick(k_timeout_t delay)
+{
+	k_work_reschedule(&ctx.effect_work, delay);
+}
+
+static int enable_strip_output(void)
+{
+	int err;
+
+	err = set_strip_power(true);
+	if (err) {
+		return err;
+	}
+
+	return refresh_idle_frame();
+}
+
+static void disable_strip_output(void)
+{
+	stop_effect_work();
+	clear_pixels();
+	(void)submit_frame();
+	(void)set_strip_power(false);
+}
+
+static void effect_work_handler(struct k_work *work)
+{
+	bool keep_running;
+
+	ARG_UNUSED(work);
+
+	if (!module_lifecycle_is_running(&ctx.lc) || !ctx.enabled ||
+	    (ctx.effect == NULL)) {
+		return;
+	}
+
+	keep_running = ctx.effect->ops->tick(ctx.effect,
+					     k_ticks_to_ms_floor32(
+						     LED_STRIP_TICK_INTERVAL.ticks),
+					     ctx.pixels, ARRAY_SIZE(ctx.pixels));
+	(void)submit_frame();
+
+	if (keep_running) {
+		schedule_effect_tick(LED_STRIP_TICK_INTERVAL);
+	}
+}
+
+static int do_init(void)
+{
+	int err;
+
+	if (!device_is_ready(ctx.strip)) {
+		LOG_ERR("LED strip device %s not ready", ctx.strip->name);
+		return -ENODEV;
+	}
+
+	if (!gpio_is_ready_dt(&ctx.strip_en)) {
+		LOG_ERR("LED strip supply GPIO not ready");
+		return -ENODEV;
+	}
+
+	err = gpio_pin_configure_dt(&ctx.strip_en, GPIO_OUTPUT_INACTIVE);
+	if (err) {
+		LOG_ERR("Failed to configure LED strip supply GPIO (%d)", err);
+		return err;
+	}
+
+	k_work_init_delayable(&ctx.effect_work, effect_work_handler);
+	clear_pixels();
+
+	ctx.effect = led_effect_get_mutable(LED_EFFECT_ID_KEY_FADE);
+	if ((ctx.effect == NULL) || (ctx.effect->ops == NULL)) {
+		LOG_ERR("LED effect not available");
+		return -ENOENT;
+	}
+
+	err = ctx.effect->ops->init(ctx.effect, &effect_cfg);
+	if (err) {
+		LOG_ERR("LED effect init failed (%d)", err);
+		return err;
+	}
+
+	ctx.effect->ops->set_theme(ctx.effect, &ctx.current_theme);
+
+	LOG_INF("LED strip ready len:%u", (uint32_t)led_strip_length(ctx.strip));
+	return 0;
+}
+
+static int do_start(void)
+{
+	int err;
+
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	if (!ctx.enabled) {
+		return 0;
+	}
+
+	err = enable_strip_output();
+	return err;
+}
+
+static int do_stop(void)
+{
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	if ((ctx.effect != NULL) && (ctx.effect->ops != NULL)) {
+		ctx.effect->ops->reset(ctx.effect);
+	}
+
+	disable_strip_output();
+	return 0;
+}
+
+static bool handle_button_event(const struct button_event *event)
+{
+	if (!module_lifecycle_is_running(&ctx.lc) || !ctx.enabled ||
+	    (ctx.effect == NULL) || !event->pressed) {
+		return false;
+	}
+
+	ctx.effect->ops->on_key_press(ctx.effect, event->key_id);
+	schedule_effect_tick(K_NO_WAIT);
+
+	return false;
+}
+
+static bool handle_led_strip_en_event(const struct led_strip_en_event *event)
+{
+	ctx.enabled = event->enabled;
+
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return false;
+	}
+
+	if (ctx.enabled) {
+		int err = enable_strip_output();
+
+		if (err) {
+			LOG_WRN("LED strip enable request failed (%d)", err);
+			ctx.enabled = false;
+			return false;
+		}
+	} else {
+		if ((ctx.effect != NULL) && (ctx.effect->ops != NULL)) {
+			ctx.effect->ops->reset(ctx.effect);
+		}
+
+		disable_strip_output();
+	}
+
+	return false;
+}
+
+static bool handle_theme_rgb_update_event(const struct theme_rgb_update_event *event)
+{
+	ctx.current_theme = event->theme;
+
+	if ((ctx.effect != NULL) && (ctx.effect->ops != NULL)) {
+		ctx.effect->ops->set_theme(ctx.effect, &ctx.current_theme);
+	}
+
+	if (module_lifecycle_is_running(&ctx.lc) && ctx.enabled &&
+	    (ctx.effect != NULL) && ctx.effect->ops->is_active(ctx.effect)) {
+		schedule_effect_tick(K_NO_WAIT);
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_button_event(aeh)) {
+		return handle_button_event(cast_button_event(aeh));
+	}
+
+	if (is_led_strip_en_event(aeh)) {
+		return handle_led_strip_en_event(cast_led_strip_en_event(aeh));
+	}
+
+	if (is_theme_rgb_update_event(aeh)) {
+		return handle_theme_rgb_update_event(cast_theme_rgb_update_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	if (is_power_down_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
+		}
+
+		return false;
+	}
+
+	if (is_wake_up_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, button_event);
+APP_EVENT_SUBSCRIBE(MODULE, led_strip_en_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, theme_rgb_update_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/mode_policy_module.c

@@ -0,0 +1,272 @@
+#include <stdbool.h>
+
+#include <app_event_manager.h>
+
+#define MODULE mode_policy_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/module_suspend_event.h>
+
+#include <zephyr/logging/log.h>
+
+#include "module_lifecycle.h"
+#include "mode_switch_event.h"
+#include "transport_policy_event.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+struct transport_policy_state {
+	enum hid_transport_policy hid_transport;
+	enum ble_profile_policy ble_profile;
+};
+
+struct mode_policy_module_ctx {
+	struct module_lifecycle_ctx lc;
+	enum mode_switch_mode active_mode;
+	struct transport_policy_state policy;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_NONE,
+	.stopped_state = MODULE_STATE_OFF,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct mode_policy_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.active_mode = MODE_SWITCH_USB,
+	.policy = {
+		.hid_transport = HID_TRANSPORT_POLICY_USB,
+		.ble_profile = BLE_PROFILE_POLICY_NONE,
+	},
+};
+
+static void build_policy_from_mode(enum mode_switch_mode mode,
+				   struct transport_policy_state *policy)
+{
+	switch (mode) {
+	case MODE_SWITCH_USB:
+		policy->hid_transport = HID_TRANSPORT_POLICY_USB;
+		policy->ble_profile = BLE_PROFILE_POLICY_NONE;
+		break;
+
+	case MODE_SWITCH_BLE:
+		policy->hid_transport = HID_TRANSPORT_POLICY_BLE;
+		policy->ble_profile = BLE_PROFILE_POLICY_GENERAL;
+		break;
+
+	case MODE_SWITCH_24G:
+		policy->hid_transport = HID_TRANSPORT_POLICY_BLE;
+		policy->ble_profile = BLE_PROFILE_POLICY_DONGLE;
+		break;
+
+	default:
+		policy->hid_transport = HID_TRANSPORT_POLICY_NONE;
+		policy->ble_profile = BLE_PROFILE_POLICY_NONE;
+		break;
+	}
+}
+
+static bool policy_equal(const struct transport_policy_state *a,
+			 const struct transport_policy_state *b)
+{
+	return (a->hid_transport == b->hid_transport) &&
+	       (a->ble_profile == b->ble_profile);
+}
+
+static void broadcast_policy(void)
+{
+	submit_transport_policy_event(ctx.active_mode, ctx.policy.hid_transport,
+				      ctx.policy.ble_profile);
+}
+
+static void mode_policy_set_ble(bool enable)
+{
+	if (enable) {
+		struct module_resume_req_event *event = new_module_resume_req_event();
+
+		event->sink_module_id = MODULE_ID(ble_adv);
+		event->src_module_id = MODULE_ID(MODULE);
+		APP_EVENT_SUBMIT(event);
+	} else {
+		struct module_suspend_req_event *event = new_module_suspend_req_event();
+
+		event->sink_module_id = MODULE_ID(ble_adv);
+		event->src_module_id = MODULE_ID(MODULE);
+		APP_EVENT_SUBMIT(event);
+	}
+}
+
+static void mode_policy_set_usb(bool enable)
+{
+	if (enable) {
+		struct module_resume_req_event *event = new_module_resume_req_event();
+
+		event->sink_module_id = MODULE_ID(usb_device_module);
+		event->src_module_id = MODULE_ID(MODULE);
+		APP_EVENT_SUBMIT(event);
+	} else {
+		struct module_suspend_req_event *event = new_module_suspend_req_event();
+
+		event->sink_module_id = MODULE_ID(usb_device_module);
+		event->src_module_id = MODULE_ID(MODULE);
+		APP_EVENT_SUBMIT(event);
+	}
+}
+
+static void apply_stack_policy(void)
+{
+	switch (ctx.active_mode) {
+	case MODE_SWITCH_BLE:
+		mode_policy_set_ble(true);
+		mode_policy_set_usb(false);
+		break;
+
+	case MODE_SWITCH_USB:
+		mode_policy_set_ble(false);
+		mode_policy_set_usb(true);
+		break;
+
+	case MODE_SWITCH_24G:
+		mode_policy_set_ble(true);
+		mode_policy_set_usb(false);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void apply_ble_mode_policy(void)
+{
+	switch (ctx.active_mode) {
+	case MODE_SWITCH_BLE:
+		mode_policy_set_ble(true);
+		break;
+
+	case MODE_SWITCH_USB:
+		mode_policy_set_ble(false);
+		break;
+
+	case MODE_SWITCH_24G:
+		mode_policy_set_ble(true);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void apply_usb_mode_policy(void)
+{
+	switch (ctx.active_mode) {
+	case MODE_SWITCH_BLE:
+		mode_policy_set_usb(false);
+		break;
+
+	case MODE_SWITCH_USB:
+		mode_policy_set_usb(true);
+		break;
+
+	case MODE_SWITCH_24G:
+		mode_policy_set_usb(false);
+		break;
+
+	default:
+		break;
+	}
+}
+
+static void update_mode_policy(enum mode_switch_mode mode)
+{
+	struct transport_policy_state next_policy;
+	bool mode_changed = (ctx.active_mode != mode);
+	bool policy_changed;
+
+	build_policy_from_mode(mode, &next_policy);
+	policy_changed = !policy_equal(&ctx.policy, &next_policy);
+
+	ctx.active_mode = mode;
+	ctx.policy = next_policy;
+
+	if (policy_changed || mode_changed) {
+		broadcast_policy();
+	}
+
+	apply_stack_policy();
+}
+
+static int do_init(void)
+{
+	ctx.active_mode = MODE_SWITCH_USB;
+	build_policy_from_mode(ctx.active_mode, &ctx.policy);
+	return 0;
+}
+
+static int do_start(void)
+{
+	broadcast_policy();
+	apply_stack_policy();
+	return 0;
+}
+
+static int do_stop(void)
+{
+	return 0;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_mode_switch_event(aeh)) {
+		const struct mode_switch_event *event = cast_mode_switch_event(aeh);
+
+		if (module_lifecycle_is_running(&ctx.lc)) {
+			update_mode_policy(event->mode);
+		}
+
+		return false;
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+			return false;
+		}
+
+		if (check_state(event, MODULE_ID(ble_adv), MODULE_STATE_READY)) {
+			if (module_lifecycle_is_running(&ctx.lc)) {
+				apply_ble_mode_policy();
+			}
+			return false;
+		}
+
+		if (check_state(event, MODULE_ID(usb_device_module),
+				MODULE_STATE_READY)) {
+			if (module_lifecycle_is_running(&ctx.lc)) {
+				apply_usb_mode_policy();
+			}
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, mode_switch_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);

src/mode_switch_module.c

@@ -14,6 +14,7 @@
 #include <zephyr/logging/log.h>
 #include <zephyr/pm/device.h>
 
+#include "module_lifecycle.h"
 #include "mode_switch_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
@@ -26,15 +27,36 @@ LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 BUILD_ASSERT(DT_NODE_EXISTS(MODE_SWITCH_ADC_NODE),
 	     "Missing mode_switch_adc node in devicetree");
 
-static const struct device *const mode_switch_adc_dev =
+struct mode_switch_module_ctx {
-	DEVICE_DT_GET(MODE_SWITCH_ADC_NODE);
+	struct module_lifecycle_ctx lc;
+	const struct device *mode_switch_adc_dev;
+	struct k_work_delayable mode_switch_sample_work;
+	enum mode_switch_mode last_mode;
+};
 
-static struct k_work_delayable mode_switch_sample_work;
+static int do_init(void);
-static bool initialized;
+static int do_start(void);
-static bool running;
+static int do_stop(void);
-static bool force_report;
+
-static bool mode_valid;
+static const struct module_lifecycle_cfg lifecycle_cfg = {
-static enum mode_switch_mode last_mode;
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct mode_switch_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.mode_switch_adc_dev = DEVICE_DT_GET(MODE_SWITCH_ADC_NODE),
+};
 
 static enum mode_switch_mode detect_mode(uint16_t voltage_mv)
 {
@@ -53,7 +75,7 @@ static int mode_switch_enable(bool enable)
 {
 	enum pm_device_action action = enable ? PM_DEVICE_ACTION_RESUME
 					      : PM_DEVICE_ACTION_SUSPEND;
-	int err = pm_device_action_run(mode_switch_adc_dev, action);
+	int err = pm_device_action_run(ctx.mode_switch_adc_dev, action);
 
 	if (err && (err != -EALREADY) && (err != -ENOTSUP)) {
 		LOG_ERR("Cannot %s mode switch ADC (%d)",
@@ -71,17 +93,18 @@ static void mode_switch_sample_fn(struct k_work *work)
 
 	ARG_UNUSED(work);
 
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
 		return;
 	}
 
-	err = sensor_sample_fetch(mode_switch_adc_dev);
+	err = sensor_sample_fetch(ctx.mode_switch_adc_dev);
 	if (err) {
 		LOG_WRN("Mode switch ADC sample fetch failed (%d)", err);
 		goto reschedule;
 	}
 
-	err = sensor_channel_get(mode_switch_adc_dev, SENSOR_CHAN_VOLTAGE, &voltage);
+	err = sensor_channel_get(ctx.mode_switch_adc_dev, SENSOR_CHAN_VOLTAGE,
+				 &voltage);
 	if (err) {
 		LOG_WRN("Mode switch ADC channel get failed (%d)", err);
 		goto reschedule;
@@ -90,43 +113,37 @@ static void mode_switch_sample_fn(struct k_work *work)
 	uint16_t sample_mv = (uint16_t)((voltage.val1 * 1000) + (voltage.val2 / 1000));
 	enum mode_switch_mode mode = detect_mode(sample_mv);
 
-	if (force_report || !mode_valid || (mode != last_mode)) {
+	if ((ctx.last_mode == MODE_SWITCH_INVALID) || (mode != ctx.last_mode)) {
-		struct mode_switch_event *event = new_mode_switch_event();
+		submit_mode_switch_event(mode, sample_mv);
 
-		event->mode = mode;
+		ctx.last_mode = mode;
-		event->voltage_mv = sample_mv;
-		APP_EVENT_SUBMIT(event);
-
-		last_mode = mode;
-		mode_valid = true;
-		force_report = false;
 	}
 
 reschedule:
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
-		k_work_reschedule(&mode_switch_sample_work, MODE_SWITCH_SAMPLE_INTERVAL);
+		k_work_reschedule(&ctx.mode_switch_sample_work,
+				  MODE_SWITCH_SAMPLE_INTERVAL);
 	}
 }
 
-static int module_init(void)
+static int do_init(void)
 {
-	if (!device_is_ready(mode_switch_adc_dev)) {
+	if (!device_is_ready(ctx.mode_switch_adc_dev)) {
 		LOG_ERR("Mode switch ADC device not ready");
 		return -ENODEV;
 	}
 
-	k_work_init_delayable(&mode_switch_sample_work, mode_switch_sample_fn);
+	k_work_init_delayable(&ctx.mode_switch_sample_work, mode_switch_sample_fn);
-	mode_valid = false;
+	ctx.last_mode = MODE_SWITCH_INVALID;
-	force_report = false;
 
 	return 0;
 }
 
-static int module_start(void)
+static int do_start(void)
 {
 	int err;
 
-	if (running) {
+	if (module_lifecycle_is_running(&ctx.lc)) {
 		return 0;
 	}
 
@@ -135,22 +152,21 @@ static int module_start(void)
 		return err;
 	}
 
-	running = true;
+	k_work_reschedule(&ctx.mode_switch_sample_work, K_NO_WAIT);
-	force_report = true;
-	k_work_reschedule(&mode_switch_sample_work, K_NO_WAIT);
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_stop(void)
 {
-	if (!running) {
+	if (!module_lifecycle_is_running(&ctx.lc)) {
-		return;
+		return 0;
 	}
 
-	(void)k_work_cancel_delayable(&mode_switch_sample_work);
+	(void)k_work_cancel_delayable(&ctx.mode_switch_sample_work);
 	(void)mode_switch_enable(false);
-	running = false;
+
+	return 0;
 }
 
 static bool app_event_handler(const struct app_event_header *aeh)
@@ -159,46 +175,35 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		const struct module_state_event *event = cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+			return false;
+		}
 
-			if (!initialized) {
+		if (check_state(event, MODULE_ID(mode_policy_module),
-				err = module_init();
+				MODULE_STATE_READY)) {
-				if (err) {
+			if (ctx.last_mode != MODE_SWITCH_INVALID) {
-					module_set_state(MODULE_STATE_ERROR);
+				submit_mode_switch_event(ctx.last_mode, 0U);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
 			} 
+			return false;
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			module_pause();
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			int err = module_start();
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
 
-			if (err) {
+			if (ctx.last_mode != MODE_SWITCH_INVALID) {
-				module_set_state(MODULE_STATE_ERROR);
+				submit_mode_switch_event(ctx.last_mode, 0U);
-			} else {
-				module_set_state(MODULE_STATE_READY);
 			}
 		}
 

src/protocol_module.c

@@ -2,37 +2,128 @@
 #include <stdbool.h>
 #include <stddef.h>
 #include <stdint.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+
+#define MODULE protocol_module
+#include <caf/events/module_state_event.h>
 
 #include <zephyr/logging/log.h>
+#include <zephyr/sys/util.h>
 
 #include <pb_decode.h>
 #include <pb_encode.h>
 
 #include <proto/device_comm.pb.h>
 
+#include "function_bitmap_state_event.h"
+#include "function_bitmap_update_event.h"
+#include "hid_led_event.h"
+#include "module_lifecycle.h"
+#include "proto_rx_event.h"
+#include "proto_transport_state_event.h"
+#include "proto_tx_event.h"
 #include "protocol_module.h"
+#include "theme_rgb_update_event.h"
+#include "time_sync_event.h"
 
-LOG_MODULE_REGISTER(protocol_module, LOG_LEVEL_INF);
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
 #define PROTOCOL_VERSION 1U
 #define PROTOCOL_VENDOR_ID 0x1915U
 #define PROTOCOL_PRODUCT_ID 0x52F0U
 #define PROTOCOL_FIRMWARE_MAJOR 0U
 #define PROTOCOL_FIRMWARE_MINOR 0U
-#define PROTOCOL_CAPABILITY_FLAGS 0U
+#define PROTOCOL_CAPABILITY_FLAGS (BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4))
+#define PROTOCOL_MAX_MSG_LEN 128U
 
-static bool type_matches_body(uint8_t type, const CdcPacketBody *body)
+enum proto_session_state {
+	PROTO_SESSION_DOWN = 0,
+	PROTO_SESSION_WAIT_HELLO,
+	PROTO_SESSION_ACTIVE,
+};
+
+struct protocol_module_ctx {
+	struct module_lifecycle_ctx lc;
+	enum proto_session_state session_state[PROTO_TRANSPORT_COUNT];
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_NONE,
+	.stopped_state = MODULE_STATE_OFF,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct protocol_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+};
+
+#define session_state ctx.session_state
+
+static const char *proto_session_name(enum proto_session_state state)
 {
-	switch (type) {
+	switch (state) {
-	case CDC_PROTO_TYPE_HELLO_REQ:
+	case PROTO_SESSION_DOWN:
-		return body->which_body == CdcPacketBody_hello_req_tag;
+		return "DOWN";
-	case CDC_PROTO_TYPE_HELLO_RSP:
+	case PROTO_SESSION_WAIT_HELLO:
-		return body->which_body == CdcPacketBody_hello_rsp_tag;
+		return "WAIT_HELLO";
+	case PROTO_SESSION_ACTIVE:
+		return "ACTIVE";
 	default:
-		return false;
+		return "?";
 	}
 }
 
+static const char *proto_transport_name(enum proto_transport transport)
+{
+	switch (transport) {
+	case PROTO_TRANSPORT_USB_CDC:
+		return "usb_cdc";
+	case PROTO_TRANSPORT_BLE_NUS:
+		return "ble_nus";
+	default:
+		return "?";
+	}
+}
+
+static void proto_session_set(enum proto_transport transport,
+			      enum proto_session_state new_state,
+			      const char *reason)
+{
+	enum proto_session_state old_state;
+
+	if (transport >= PROTO_TRANSPORT_COUNT) {
+		return;
+	}
+
+	old_state = session_state[transport];
+	if (old_state == new_state) {
+		LOG_INF("Protocol session keep transport:%s state:%s reason:%s",
+			proto_transport_name(transport),
+			proto_session_name(new_state), reason);
+		return;
+	}
+
+	session_state[transport] = new_state;
+	LOG_INF("Protocol session transport:%s %s -> %s reason:%s",
+		proto_transport_name(transport), proto_session_name(old_state),
+		proto_session_name(new_state), reason);
+}
+
 static int decode_body(const uint8_t *payload, size_t payload_len,
 		       CdcPacketBody *body)
 {
@@ -53,15 +144,29 @@ static int decode_body(const uint8_t *payload, size_t payload_len,
 	return 0;
 }
 
+static int encode_body(const CdcPacketBody *body, uint8_t *payload,
+		       size_t payload_buf_size, size_t *payload_len)
+{
+	pb_ostream_t stream;
+
+	if ((body == NULL) || (payload == NULL) || (payload_len == NULL)) {
+		return -EINVAL;
+	}
+
+	stream = pb_ostream_from_buffer(payload, payload_buf_size);
+	if (!pb_encode(&stream, CdcPacketBody_fields, body)) {
+		LOG_WRN("pb_encode failed: %s", PB_GET_ERROR(&stream));
+		return -EIO;
+	}
+
+	*payload_len = stream.bytes_written;
+	return 0;
+}
+
 static int encode_hello_rsp(uint8_t *rsp_payload, size_t rsp_payload_buf_size,
 			    size_t *rsp_payload_len)
 {
 	CdcPacketBody body = CdcPacketBody_init_zero;
-	pb_ostream_t stream;
-
-	if ((rsp_payload == NULL) || (rsp_payload_len == NULL)) {
-		return -EINVAL;
-	}
 
 	body.which_body = CdcPacketBody_hello_rsp_tag;
 	body.body.hello_rsp.protocol_version = PROTOCOL_VERSION;
@@ -71,63 +176,407 @@ static int encode_hello_rsp(uint8_t *rsp_payload, size_t rsp_payload_buf_size,
 	body.body.hello_rsp.firmware_minor = PROTOCOL_FIRMWARE_MINOR;
 	body.body.hello_rsp.capability_flags = PROTOCOL_CAPABILITY_FLAGS;
 
-	stream = pb_ostream_from_buffer(rsp_payload, rsp_payload_buf_size);
+	return encode_body(&body, rsp_payload, rsp_payload_buf_size, rsp_payload_len);
+}
 
-	if (!pb_encode(&stream, CdcPacketBody_fields, &body)) {
+static int encode_ack(uint8_t acked_type, uint8_t *rsp_payload,
-		LOG_WRN("pb_encode failed: %s", PB_GET_ERROR(&stream));
+		      size_t rsp_payload_buf_size, size_t *rsp_payload_len)
-		return -EIO;
+{
+	CdcPacketBody body = CdcPacketBody_init_zero;
+
+	body.which_body = CdcPacketBody_ack_tag;
+	body.body.ack.acked_type = acked_type;
+
+	return encode_body(&body, rsp_payload, rsp_payload_buf_size, rsp_payload_len);
+}
+
+static int encode_error(uint8_t error_type, ErrorCode error_code,
+			uint8_t *rsp_payload, size_t rsp_payload_buf_size,
+			size_t *rsp_payload_len)
+{
+	CdcPacketBody body = CdcPacketBody_init_zero;
+
+	body.which_body = CdcPacketBody_error_tag;
+	body.body.error.error_type = error_type;
+	body.body.error.error_code = error_code;
+
+	return encode_body(&body, rsp_payload, rsp_payload_buf_size, rsp_payload_len);
+}
+
+static int encode_led_state(uint32_t led_mask, uint8_t *payload,
+			    size_t payload_buf_size, size_t *payload_len)
+{
+	CdcPacketBody body = CdcPacketBody_init_zero;
+
+	body.which_body = CdcPacketBody_led_state_tag;
+	body.body.led_state.led_mask = led_mask;
+
+	return encode_body(&body, payload, payload_buf_size, payload_len);
+}
+
+static int encode_function_bitmap_state(const uint8_t *bitmap, uint8_t *payload,
+					size_t payload_buf_size,
+					size_t *payload_len)
+{
+	CdcPacketBody body = CdcPacketBody_init_zero;
+
+	if (bitmap == NULL) {
+		return -EINVAL;
 	}
 
-	*rsp_payload_len = stream.bytes_written;
+	body.which_body = CdcPacketBody_function_key_event_tag;
+	body.body.function_key_event.usage_bitmap.size = KEYBOARD_PROTOCOL_BITMAP_BYTES;
+	memcpy(body.body.function_key_event.usage_bitmap.bytes, bitmap,
+	       KEYBOARD_PROTOCOL_BITMAP_BYTES);
+
+	return encode_body(&body, payload, payload_buf_size, payload_len);
+}
+
+static int do_init(void)
+{
+	for (size_t i = 0; i < ARRAY_SIZE(session_state); i++) {
+		session_state[i] = PROTO_SESSION_DOWN;
+	}
+
+	LOG_INF("Protocol init done");
+
 	return 0;
 }
 
-int protocol_module_process_cdc_packet(uint8_t req_type,
+static int do_start(void)
-				       const uint8_t *req_payload,
+{
-				       size_t req_payload_len,
+	if (module_lifecycle_is_running(&ctx.lc)) {
-				       uint8_t *rsp_type,
+		return 0;
-				       uint8_t *rsp_payload,
+	}
-				       size_t rsp_payload_buf_size,
+
-				       size_t *rsp_payload_len)
+	return 0;
+}
+
+static int do_stop(void)
+{
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	for (size_t i = 0; i < ARRAY_SIZE(session_state); i++) {
+		proto_session_set((enum proto_transport)i, PROTO_SESSION_DOWN,
+				  "module_stop");
+	}
+
+	return 0;
+}
+
+int protocol_module_process_message(enum proto_transport transport,
+				    const uint8_t *req_payload,
+				    size_t req_payload_len,
+				    uint8_t *rsp_payload,
+				    size_t rsp_payload_buf_size,
+				    size_t *rsp_payload_len)
 {
 	CdcPacketBody body;
 	int err;
 
-	if ((rsp_type == NULL) || (rsp_payload == NULL) || (rsp_payload_len == NULL)) {
+	if ((transport >= PROTO_TRANSPORT_COUNT) ||
+	    (rsp_payload == NULL) || (rsp_payload_len == NULL)) {
 		return -EINVAL;
 	}
 
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		LOG_WRN("Reject proto msg transport:%s len:%u lc:%s",
+			proto_transport_name(transport), (uint32_t)req_payload_len,
+			module_lifecycle_name(ctx.lc.state));
+		return -EAGAIN;
+	}
+
 	err = decode_body(req_payload, req_payload_len, &body);
 	if (err) {
 		return err;
 	}
 
-	if (!type_matches_body(req_type, &body)) {
+	switch (body.which_body) {
-		LOG_WRN("CDC type/body mismatch type:0x%02x body_case:%d",
+	case CdcPacketBody_hello_req_tag:
-			req_type, body.which_body);
+		if (session_state[transport] == PROTO_SESSION_DOWN) {
-		return -EBADMSG;
+			LOG_WRN("Reject HelloReq transport:%s session:%s lc:%s",
-	}
+				proto_transport_name(transport),
+				proto_session_name(session_state[transport]),
+				module_lifecycle_name(ctx.lc.state));
+			return -EAGAIN;
+		}
 
-	switch (req_type) {
+		LOG_INF("HelloReq transport:%u protocol_version:%u",
-	case CDC_PROTO_TYPE_HELLO_REQ:
+			transport, body.body.hello_req.protocol_version);
-		LOG_INF("HelloReq protocol_version:%u",
-			body.body.hello_req.protocol_version);
 
 		if (body.body.hello_req.protocol_version != PROTOCOL_VERSION) {
 			LOG_WRN("Unexpected protocol version:%u",
 				body.body.hello_req.protocol_version);
 		}
 
-		err = encode_hello_rsp(rsp_payload, rsp_payload_buf_size, rsp_payload_len);
+		proto_session_set(transport, PROTO_SESSION_ACTIVE, "hello_req");
-		if (err) {
+		return encode_hello_rsp(rsp_payload, rsp_payload_buf_size, rsp_payload_len);
-			return err;
+
+	case CdcPacketBody_bitmap_tag:
+		if (session_state[transport] != PROTO_SESSION_ACTIVE) {
+			return encode_error(CdcPacketBody_bitmap_tag,
+					    ErrorCode_ERROR_CODE_NOT_READY,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
 		}
 
-		*rsp_type = CDC_PROTO_TYPE_HELLO_RSP;
+		if (body.body.bitmap.usage_bitmap.size != KEYBOARD_PROTOCOL_BITMAP_BYTES) {
-		return 0;
+			return encode_error(CdcPacketBody_bitmap_tag,
+					    ErrorCode_ERROR_CODE_INVALID_LENGTH,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		err = submit_function_bitmap_update_event(
+			body.body.bitmap.usage_bitmap.bytes);
+		if (err) {
+			return encode_error(CdcPacketBody_bitmap_tag,
+					    ErrorCode_ERROR_CODE_INVALID_PARAM,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		return encode_ack(CdcPacketBody_bitmap_tag, rsp_payload,
+				  rsp_payload_buf_size, rsp_payload_len);
+
+	case CdcPacketBody_time_sync_tag:
+		if (session_state[transport] != PROTO_SESSION_ACTIVE) {
+			return encode_error(CdcPacketBody_time_sync_tag,
+					    ErrorCode_ERROR_CODE_NOT_READY,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		if (body.body.time_sync.version != 1U) {
+			return encode_error(CdcPacketBody_time_sync_tag,
+					    ErrorCode_ERROR_CODE_INVALID_PARAM,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		submit_time_sync_event(body.body.time_sync.version,
+				       body.body.time_sync.flags,
+				       body.body.time_sync.timezone_min,
+				       body.body.time_sync.utc_ms,
+				       body.body.time_sync.accuracy_ms);
+		return encode_ack(CdcPacketBody_time_sync_tag, rsp_payload,
+				  rsp_payload_buf_size, rsp_payload_len);
+
+	case CdcPacketBody_theme_rgb_tag:
+		if (session_state[transport] != PROTO_SESSION_ACTIVE) {
+			return encode_error(CdcPacketBody_theme_rgb_tag,
+					    ErrorCode_ERROR_CODE_NOT_READY,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		if ((body.body.theme_rgb.red > 255U) ||
+		    (body.body.theme_rgb.green > 255U) ||
+		    (body.body.theme_rgb.blue > 255U)) {
+			return encode_error(CdcPacketBody_theme_rgb_tag,
+					    ErrorCode_ERROR_CODE_INVALID_PARAM,
+					    rsp_payload, rsp_payload_buf_size,
+					    rsp_payload_len);
+		}
+
+		submit_theme_rgb_update_event((struct theme_rgb) {
+			.r = (uint8_t)body.body.theme_rgb.red,
+			.g = (uint8_t)body.body.theme_rgb.green,
+			.b = (uint8_t)body.body.theme_rgb.blue,
+		});
+		return encode_ack(CdcPacketBody_theme_rgb_tag, rsp_payload,
+				  rsp_payload_buf_size, rsp_payload_len);
 
 	default:
-		LOG_WRN("Unsupported CDC protocol type:0x%02x", req_type);
+		LOG_WRN("Unsupported protobuf body case %d", body.which_body);
 		return -ENOTSUP;
 	}
 }
+
+static bool handle_proto_rx_event(const struct proto_rx_event *event)
+{
+	uint8_t rsp_payload[PROTOCOL_MAX_MSG_LEN];
+	size_t rsp_payload_len = 0U;
+	int err;
+
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return false;
+	}
+
+	err = protocol_module_process_message(event->transport,
+					      event->dyndata.data,
+					      event->dyndata.size,
+					      rsp_payload,
+					      sizeof(rsp_payload),
+					      &rsp_payload_len);
+	if (err) {
+		if (err != -ENOTSUP) {
+			LOG_WRN("Protocol processing failed (%d) transport:%s session:%s lc:%s len:%u",
+				err, proto_transport_name(event->transport),
+				proto_session_name(session_state[event->transport]),
+				module_lifecycle_name(ctx.lc.state),
+				(uint32_t)event->dyndata.size);
+		}
+
+		return false;
+	}
+
+	LOG_INF("Protocol response ready transport:%s rsp_len:%u session:%s",
+		proto_transport_name(event->transport), (unsigned int)rsp_payload_len,
+		proto_session_name(session_state[event->transport]));
+	err = submit_proto_tx_event(event->transport, rsp_payload, rsp_payload_len);
+	if (err) {
+		LOG_WRN("Proto TX submit failed (%d)", err);
+	}
+
+	return false;
+}
+
+static bool handle_proto_transport_state_event(
+	const struct proto_transport_state_event *event)
+{
+	if (event->transport >= PROTO_TRANSPORT_COUNT) {
+		return false;
+	}
+
+	switch (event->state) {
+	case PROTO_TRANSPORT_LINK_DOWN:
+		proto_session_set(event->transport, PROTO_SESSION_DOWN,
+				  "transport_link_down");
+		break;
+
+	case PROTO_TRANSPORT_LINK_READY:
+		proto_session_set(event->transport, PROTO_SESSION_WAIT_HELLO,
+				  "transport_link_ready");
+		break;
+
+	default:
+		return false;
+	}
+
+	return false;
+}
+
+static bool handle_function_bitmap_state_event(
+	const struct function_bitmap_state_event *event)
+{
+	uint8_t payload[PROTOCOL_MAX_MSG_LEN];
+	size_t payload_len;
+	int err;
+
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return false;
+	}
+
+	for (enum proto_transport transport = 0; transport < PROTO_TRANSPORT_COUNT;
+	     transport++) {
+		if (session_state[transport] != PROTO_SESSION_ACTIVE) {
+			LOG_INF("FunctionKeyEvent skip transport:%s session:%s",
+				proto_transport_name(transport),
+				proto_session_name(session_state[transport]));
+			continue;
+		}
+
+		err = encode_function_bitmap_state(event->bitmap, payload,
+						   sizeof(payload), &payload_len);
+		if (err) {
+			LOG_WRN("FunctionKeyEvent encode failed (%d)", err);
+			return false;
+		}
+
+		err = submit_proto_tx_event(transport, payload, payload_len);
+		if (err) {
+			LOG_WRN("FunctionKeyEvent submit failed (%d)", err);
+		} else {
+			LOG_INF("FunctionKeyEvent submit transport:%s len:%u",
+				proto_transport_name(transport),
+				(unsigned int)payload_len);
+		}
+	}
+
+	return false;
+}
+
+static bool handle_hid_led_event(const struct hid_led_event *event)
+{
+	uint8_t payload[PROTOCOL_MAX_MSG_LEN];
+	size_t payload_len;
+	int err;
+	enum proto_transport transport;
+
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return false;
+	}
+
+	transport = (event->transport == HID_TRANSPORT_USB) ?
+			    PROTO_TRANSPORT_USB_CDC :
+			    PROTO_TRANSPORT_BLE_NUS;
+
+	if (session_state[transport] != PROTO_SESSION_ACTIVE) {
+		LOG_INF("LedState skip transport:%s session:%s led_mask:0x%02x",
+			proto_transport_name(transport),
+			proto_session_name(session_state[transport]), event->led_bm);
+		return false;
+	}
+
+	err = encode_led_state(event->led_bm, payload, sizeof(payload), &payload_len);
+	if (err) {
+		LOG_WRN("LedState encode failed (%d)", err);
+		return false;
+	}
+
+	err = submit_proto_tx_event(transport, payload, payload_len);
+	if (err) {
+		LOG_WRN("LedState submit failed (%d)", err);
+	} else {
+		LOG_INF("LedState submit transport:%s len:%u led_mask:0x%02x",
+			proto_transport_name(transport), (unsigned int)payload_len,
+			event->led_bm);
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_proto_rx_event(aeh)) {
+		return handle_proto_rx_event(cast_proto_rx_event(aeh));
+	}
+
+	if (is_proto_transport_state_event(aeh)) {
+		return handle_proto_transport_state_event(
+			cast_proto_transport_state_event(aeh));
+	}
+
+	if (is_function_bitmap_state_event(aeh)) {
+		return handle_function_bitmap_state_event(
+			cast_function_bitmap_state_event(aeh));
+	}
+
+	if (is_hid_led_event(aeh)) {
+		return handle_hid_led_event(cast_hid_led_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+
+			return false;
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, function_bitmap_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_led_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, proto_rx_event);
+APP_EVENT_SUBSCRIBE(MODULE, proto_transport_state_event);

src/time_sync_module.c

@@ -0,0 +1,191 @@
+#include <stdbool.h>
+#include <string.h>
+#include <time.h>
+
+#include <app_event_manager.h>
+
+#define MODULE time_sync_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.h>
+
+#include <zephyr/kernel.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/sys/printk.h>
+
+#include "datetime_event.h"
+#include "module_lifecycle.h"
+#include "time_sync_event.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+#define TIME_SYNC_REFRESH_PERIOD K_SECONDS(1)
+
+struct time_sync_module_ctx {
+	struct module_lifecycle_ctx lc;
+	struct k_work_delayable refresh_work;
+	int32_t timezone_min;
+	uint64_t utc_ms_base;
+	int64_t uptime_ms_base;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct time_sync_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+};
+
+static void publish_datetime_event(void)
+{
+	struct tm tm_buf;
+	time_t seconds;
+	int64_t local_ms;
+	char date_text[DATETIME_EVENT_DATE_TEXT_LEN];
+	char time_text[DATETIME_EVENT_TIME_TEXT_LEN];
+
+	local_ms = (int64_t)ctx.utc_ms_base +
+		   (k_uptime_get() - ctx.uptime_ms_base) +
+		   ((int64_t)ctx.timezone_min * 60LL * 1000LL);
+	if (local_ms < 0) {
+		local_ms = 0;
+	}
+
+	seconds = (time_t)(local_ms / 1000LL);
+	if (gmtime_r(&seconds, &tm_buf) == NULL) {
+		strncpy(date_text, "1970/01/01", sizeof(date_text));
+		date_text[sizeof(date_text) - 1] = '\0';
+		strncpy(time_text, "00:00:00", sizeof(time_text));
+		time_text[sizeof(time_text) - 1] = '\0';
+	} else {
+		snprintk(date_text, sizeof(date_text),
+			 "%04u/%02u/%02u",
+			 (unsigned int)(tm_buf.tm_year + 1900),
+			 (unsigned int)(tm_buf.tm_mon + 1),
+			 (unsigned int)tm_buf.tm_mday);
+		snprintk(time_text, sizeof(time_text),
+			 "%02u:%02u:%02u",
+			 (unsigned int)tm_buf.tm_hour,
+			 (unsigned int)tm_buf.tm_min,
+			 (unsigned int)tm_buf.tm_sec);
+	}
+
+	(void)submit_datetime_event(date_text, time_text);
+}
+
+static void refresh_work_handler(struct k_work *work)
+{
+	ARG_UNUSED(work);
+
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return;
+	}
+
+	publish_datetime_event();
+	k_work_reschedule(&ctx.refresh_work, TIME_SYNC_REFRESH_PERIOD);
+}
+
+static int do_init(void)
+{
+	ctx.timezone_min = 0;
+	ctx.utc_ms_base = 0U;
+	ctx.uptime_ms_base = k_uptime_get();
+	k_work_init_delayable(&ctx.refresh_work, refresh_work_handler);
+	return 0;
+}
+
+static int do_start(void)
+{
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	k_work_reschedule(&ctx.refresh_work, K_NO_WAIT);
+
+	return 0;
+}
+
+static int do_stop(void)
+{
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	k_work_cancel_delayable(&ctx.refresh_work);
+
+	return 0;
+}
+
+static bool handle_time_sync_event(const struct time_sync_event *event)
+{
+	if (event->version != 1U) {
+		LOG_WRN("Unexpected TimeSync version:%u", event->version);
+		return false;
+	}
+
+	ctx.timezone_min = event->timezone_min;
+	ctx.utc_ms_base = event->utc_ms;
+	ctx.uptime_ms_base = k_uptime_get();
+
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		k_work_reschedule(&ctx.refresh_work, K_NO_WAIT);
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_time_sync_event(aeh)) {
+		return handle_time_sync_event(cast_time_sync_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	if (is_power_down_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
+		}
+
+		return false;
+	}
+
+	if (is_wake_up_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, time_sync_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/ui/ui_main.c

@@ -207,8 +207,6 @@ void ui_main_init(const struct ui_main_model *model,
 
 	lv_obj_clean(screen);
 	lv_obj_set_style_bg_color(screen, lv_color_hex(0x0F1115), 0);
-	lv_obj_set_style_bg_grad_color(screen, lv_color_hex(0x1A1F29), 0);
-	lv_obj_set_style_bg_grad_dir(screen, LV_GRAD_DIR_VER, 0);
 	lv_obj_set_style_bg_opa(screen, LV_OPA_COVER, 0);
 	lv_obj_set_style_text_color(screen, lv_color_white(), 0);
 	lv_obj_set_style_pad_all(screen, 0, 0);

src/usb_cdc_module.c

@@ -16,78 +16,230 @@
 #include <zephyr/sys/ring_buffer.h>
 #include <zephyr/sys/util.h>
 
-#include "usb_cdc_rx_event.h"
+#include "module_lifecycle.h"
-#include "usb_cdc_tx_event.h"
+#include "proto_rx_event.h"
-#include "usb_function_ready_event.h"
+#include "proto_transport_state_event.h"
-#include "usb_prepare_event.h"
+#include "proto_tx_event.h"
-#include "usb_device_module.h"
+#include "usb_control_event.h"
-#include "usb_device_state_event.h"
+#include "usb_state_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
 #define USB_CDC_RX_RING_BUF_SIZE 256
 #define USB_CDC_TX_RING_BUF_SIZE 256
 #define USB_CDC_RX_CHUNK_SIZE 32
-#define USB_CDC_CONTROL_POLL_INTERVAL K_MSEC(100)
+#define USB_CDC_PROTO_RX_BUF_SIZE 128
+#define USB_CDC_PROTO_RX_FLUSH_DELAY K_MSEC(3)
 #define USB_CDC_EXPECTED_BAUDRATE 115200U
 
-static const struct device *const cdc_dev = DEVICE_DT_GET_ONE(zephyr_cdc_acm_uart);
+enum usb_cdc_business_state {
+	USB_CDC_BUS_OFFLINE = 0,
+	USB_CDC_WAIT_DTR,
+	USB_CDC_SESSION_READY,
+};
 
-static uint8_t rx_ring_buffer[USB_CDC_RX_RING_BUF_SIZE];
+struct usb_cdc_ctx {
-static uint8_t tx_ring_buffer[USB_CDC_TX_RING_BUF_SIZE];
+	struct module_lifecycle_ctx lc;
-static struct ring_buf rx_ringbuf;
+	enum usb_cdc_business_state business;
-static struct ring_buf tx_ringbuf;
+	const struct device *cdc_dev;
-static struct k_work rx_work;
+	uint8_t rx_ring_buffer[USB_CDC_RX_RING_BUF_SIZE];
-static struct k_work_delayable control_work;
+	uint8_t tx_ring_buffer[USB_CDC_TX_RING_BUF_SIZE];
-static bool initialized;
+	struct ring_buf rx_ringbuf;
-static bool running;
+	struct ring_buf tx_ringbuf;
-static bool usb_active;
+	struct k_work rx_work;
-static bool usb_function_prepared;
+	struct k_work_delayable rx_flush_work;
-static bool dtr_ready;
+	uint8_t proto_rx_buf[USB_CDC_PROTO_RX_BUF_SIZE];
-static bool rx_enabled;
+	bool usb_active;
+	size_t proto_rx_len;
+};
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
 
-static void submit_usb_cdc_rx_event(const uint8_t *data, size_t len)
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct usb_cdc_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.business = USB_CDC_BUS_OFFLINE,
+	.cdc_dev = DEVICE_DT_GET(DT_NODELABEL(cdc_acm_uart0)),
+	.usb_active = false,
+	.proto_rx_len = 0U,
+};
+
+#define proto_rx_buf ctx.proto_rx_buf
+
+static void validate_line_coding(void);
+
+static const char *usb_cdc_business_state_name(enum usb_cdc_business_state state)
 {
-	struct usb_cdc_rx_event *event = new_usb_cdc_rx_event(len);
+	switch (state) {
-
+	case USB_CDC_BUS_OFFLINE:
-	memcpy(event->dyndata.data, data, len);
+		return "BUS_OFFLINE";
-	APP_EVENT_SUBMIT(event);
+	case USB_CDC_WAIT_DTR:
+		return "WAIT_DTR";
+	case USB_CDC_SESSION_READY:
+		return "SESSION_READY";
+	default:
+		return "?";
+	}
 }
 
-static void submit_usb_function_ready_event(void)
+static const char *proto_link_state_name(enum proto_transport_link_state state)
 {
-	struct usb_function_ready_event *event = new_usb_function_ready_event();
+	switch (state) {
+	case PROTO_TRANSPORT_LINK_DOWN:
+		return "DOWN";
+	case PROTO_TRANSPORT_LINK_READY:
+		return "READY";
+	default:
+		return "?";
+	}
+}
 
-	event->function_mask = USB_FUNCTION_CDC_ACM;
+static bool lifecycle_is_ready(void)
-	APP_EVENT_SUBMIT(event);
+{
+	return module_lifecycle_is_running(&ctx.lc);
+}
+
+static enum proto_transport_link_state transport_link_state_get(void)
+{
+	return (lifecycle_is_ready() &&
+		(ctx.business == USB_CDC_SESSION_READY)) ?
+		       PROTO_TRANSPORT_LINK_READY :
+		       PROTO_TRANSPORT_LINK_DOWN;
 }
 
 static void reset_ring_buffers(void)
 {
 	unsigned int key = irq_lock();
 
-	ring_buf_init(&rx_ringbuf, sizeof(rx_ring_buffer), rx_ring_buffer);
+	ring_buf_init(&ctx.rx_ringbuf, sizeof(ctx.rx_ring_buffer), ctx.rx_ring_buffer);
-	ring_buf_init(&tx_ringbuf, sizeof(tx_ring_buffer), tx_ring_buffer);
+	ring_buf_init(&ctx.tx_ringbuf, sizeof(ctx.tx_ring_buffer), ctx.tx_ring_buffer);
 
 	irq_unlock(key);
 }
 
 static void disable_uart_io(void)
 {
-	uart_irq_rx_disable(cdc_dev);
+	uart_irq_rx_disable(ctx.cdc_dev);
-	uart_irq_tx_disable(cdc_dev);
+	uart_irq_tx_disable(ctx.cdc_dev);
-	rx_enabled = false;
+	ctx.proto_rx_len = 0U;
-	dtr_ready = false;
+	k_work_cancel_delayable(&ctx.rx_flush_work);
 	reset_ring_buffers();
 }
 
+static void state_reconcile(enum module_lifecycle old_lifecycle,
+			    enum usb_cdc_business_state old_business)
+{
+	enum proto_transport_link_state old_link =
+		((old_lifecycle == LC_RUNNING) &&
+		 (old_business == USB_CDC_SESSION_READY)) ?
+			PROTO_TRANSPORT_LINK_READY :
+			PROTO_TRANSPORT_LINK_DOWN;
+	enum proto_transport_link_state new_link = transport_link_state_get();
+
+	if ((old_lifecycle == LC_RUNNING) &&
+	    (old_business == USB_CDC_SESSION_READY) &&
+	    (new_link == PROTO_TRANSPORT_LINK_DOWN)) {
+		LOG_INF("CDC reconcile: link READY -> DOWN, disable UART IO");
+		disable_uart_io();
+	}
+
+	if ((old_link == PROTO_TRANSPORT_LINK_DOWN) &&
+	    (new_link == PROTO_TRANSPORT_LINK_READY)) {
+		int err;
+
+		LOG_INF("CDC reconcile: link DOWN -> READY (business:%s usb_active:%u lc:%s)",
+			usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+			module_lifecycle_name(ctx.lc.state));
+		validate_line_coding();
+
+		err = uart_line_ctrl_set(ctx.cdc_dev, UART_LINE_CTRL_DCD, 1);
+		if (err) {
+			LOG_WRN("Failed to set DCD (%d)", err);
+		}
+
+		err = uart_line_ctrl_set(ctx.cdc_dev, UART_LINE_CTRL_DSR, 1);
+		if (err) {
+			LOG_WRN("Failed to set DSR (%d)", err);
+		}
+
+		uart_irq_rx_enable(ctx.cdc_dev);
+	}
+
+	if (old_link != new_link) {
+		LOG_INF("CDC link %s -> %s (business:%s usb_active:%u lc:%s)",
+			proto_link_state_name(old_link),
+			proto_link_state_name(new_link),
+			usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+			module_lifecycle_name(ctx.lc.state));
+		submit_proto_transport_state_event(PROTO_TRANSPORT_USB_CDC,
+						   new_link);
+	}
+}
+
+static void business_state_set(enum usb_cdc_business_state new_state)
+{
+	enum module_lifecycle old_lifecycle = ctx.lc.state;
+	enum usb_cdc_business_state old_business = ctx.business;
+
+	if (ctx.business == new_state) {
+		return;
+	}
+
+	ctx.business = new_state;
+	LOG_INF("CDC business %s -> %s (usb_active:%u lc:%s)",
+		usb_cdc_business_state_name(old_business),
+		usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+		module_lifecycle_name(ctx.lc.state));
+	state_reconcile(old_lifecycle, old_business);
+}
+
+static void business_state_sync_from_usb(void)
+{
+	LOG_INF("CDC sync from USB (usb_active:%u business:%s lc:%s)",
+		ctx.usb_active, usb_cdc_business_state_name(ctx.business),
+		module_lifecycle_name(ctx.lc.state));
+
+	if (!ctx.usb_active) {
+		business_state_set(USB_CDC_BUS_OFFLINE);
+		return;
+	}
+
+	if (!lifecycle_is_ready()) {
+		return;
+	}
+
+	if (ctx.business == USB_CDC_BUS_OFFLINE) {
+		business_state_set(USB_CDC_WAIT_DTR);
+	}
+}
+
 static void kick_tx(void)
 {
-	if (!running || !usb_active || !dtr_ready) {
+	if (transport_link_state_get() != PROTO_TRANSPORT_LINK_READY) {
+		LOG_INF("CDC kick_tx skipped: link=%s business:%s usb_active:%u tx_rb:%u",
+			proto_link_state_name(transport_link_state_get()),
+			usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+			ring_buf_size_get(&ctx.tx_ringbuf));
 		return;
 	}
 
-	uart_irq_tx_enable(cdc_dev);
+	LOG_INF("CDC kick_tx: enable TX IRQ (tx_rb:%u)", ring_buf_size_get(&ctx.tx_ringbuf));
+	uart_irq_tx_enable(ctx.cdc_dev);
 }
 
 static void validate_line_coding(void)
@@ -95,7 +247,7 @@ static void validate_line_coding(void)
 	uint32_t baudrate = 0U;
 	int err;
 
-	err = uart_line_ctrl_get(cdc_dev, UART_LINE_CTRL_BAUD_RATE, &baudrate);
+	err = uart_line_ctrl_get(ctx.cdc_dev, UART_LINE_CTRL_BAUD_RATE, &baudrate);
 	if (err) {
 		LOG_WRN("Failed to get CDC baudrate (%d)", err);
 	} else {
@@ -110,7 +262,7 @@ static void validate_line_coding(void)
 	{
 		struct uart_config cfg;
 
-		err = uart_config_get(cdc_dev, &cfg);
+		err = uart_config_get(ctx.cdc_dev, &cfg);
 		if (err) {
 			LOG_WRN("uart_config_get failed (%d)", err);
 		} else {
@@ -138,62 +290,47 @@ static void rx_work_handler(struct k_work *work)
 		uint32_t len;
 		unsigned int key = irq_lock();
 
-		len = ring_buf_get(&rx_ringbuf, buffer, sizeof(buffer));
+			len = ring_buf_get(&ctx.rx_ringbuf, buffer, sizeof(buffer));
 		irq_unlock(key);
 
 		if (len == 0U) {
 			return;
 		}
 
-		submit_usb_cdc_rx_event(buffer, len);
+		LOG_INF("CDC rx_work pulled %u bytes from RX ring (proto_rx_len:%u)",
+			(unsigned int)len, (unsigned int)ctx.proto_rx_len);
+
+		if ((ctx.proto_rx_len + len) > sizeof(proto_rx_buf)) {
+			LOG_WRN("Drop oversized CDC protobuf message len:%u",
+				(uint32_t)(ctx.proto_rx_len + len));
+			ctx.proto_rx_len = 0U;
+		}
+
+		if (len > 0U) {
+			memcpy(&proto_rx_buf[ctx.proto_rx_len], buffer, len);
+			ctx.proto_rx_len += len;
+			k_work_reschedule(&ctx.rx_flush_work, USB_CDC_PROTO_RX_FLUSH_DELAY);
+		}
 	}
 }
 
-static void control_work_handler(struct k_work *work)
+static void rx_flush_work_handler(struct k_work *work)
 {
-	uint32_t dtr = 0U;
-	int err;
-
 	ARG_UNUSED(work);
 
-	if (!running || !usb_active) {
+	if ((transport_link_state_get() != PROTO_TRANSPORT_LINK_READY) ||
+	    (ctx.proto_rx_len == 0U)) {
+		LOG_INF("CDC rx_flush skipped: link=%s proto_rx_len:%u business:%s",
+			proto_link_state_name(transport_link_state_get()),
+			(unsigned int)ctx.proto_rx_len,
+			usb_cdc_business_state_name(ctx.business));
 		return;
 	}
 
-	err = uart_line_ctrl_get(cdc_dev, UART_LINE_CTRL_DTR, &dtr);
+	LOG_INF("CDC rx_flush submit proto_rx len:%u", (unsigned int)ctx.proto_rx_len);
-	if (err) {
+	(void)submit_proto_rx_event(PROTO_TRANSPORT_USB_CDC, proto_rx_buf,
-		LOG_WRN("Failed to get CDC DTR (%d)", err);
+				    ctx.proto_rx_len);
-		goto reschedule;
+	ctx.proto_rx_len = 0U;
-	}
-
-	if (dtr && !dtr_ready) {
-		dtr_ready = true;
-		LOG_INF("CDC DTR set");
-		validate_line_coding();
-
-		err = uart_line_ctrl_set(cdc_dev, UART_LINE_CTRL_DCD, 1);
-		if (err) {
-			LOG_WRN("Failed to set DCD (%d)", err);
-		}
-
-		err = uart_line_ctrl_set(cdc_dev, UART_LINE_CTRL_DSR, 1);
-		if (err) {
-			LOG_WRN("Failed to set DSR (%d)", err);
-		}
-
-		if (!rx_enabled) {
-			uart_irq_rx_enable(cdc_dev);
-			rx_enabled = true;
-		}
-
-		kick_tx();
-	} else if (!dtr && dtr_ready) {
-		LOG_INF("CDC DTR cleared");
-		disable_uart_io();
-	}
-
-reschedule:
-	k_work_reschedule(&control_work, USB_CDC_CONTROL_POLL_INTERVAL);
 }
 
 static void cdc_interrupt_handler(const struct device *dev, void *user_data)
@@ -214,15 +351,20 @@ static void cdc_interrupt_handler(const struct device *dev, void *user_data)
 				uint32_t written;
 				unsigned int key = irq_lock();
 
-				written = ring_buf_put(&rx_ringbuf, buffer,
+				written = ring_buf_put(&ctx.rx_ringbuf, buffer,
 						       (uint32_t)recv_len);
 				irq_unlock(key);
 
 				if (written < (uint32_t)recv_len) {
-					LOG_WRN("Drop %d CDC RX bytes", recv_len - (int)written);
+					LOG_WRN("Drop %d CDC RX bytes",
+						recv_len - (int)written);
 				}
 
-				k_work_submit(&rx_work);
+				LOG_INF("CDC IRQ RX recv:%d written:%u rx_rb:%u",
+					recv_len, (unsigned int)written,
+					ring_buf_size_get(&ctx.rx_ringbuf));
+
+				k_work_submit(&ctx.rx_work);
 			}
 		}
 
@@ -232,10 +374,11 @@ static void cdc_interrupt_handler(const struct device *dev, void *user_data)
 			int sent_len;
 			unsigned int key = irq_lock();
 
-			len = ring_buf_get(&tx_ringbuf, buffer, sizeof(buffer));
+			len = ring_buf_get(&ctx.tx_ringbuf, buffer, sizeof(buffer));
 			irq_unlock(key);
 
 			if (len == 0U) {
+				LOG_INF("CDC IRQ TX ready but no pending data, disable TX IRQ");
 				uart_irq_tx_disable(dev);
 				continue;
 			}
@@ -248,97 +391,183 @@ static void cdc_interrupt_handler(const struct device *dev, void *user_data)
 				LOG_WRN("Drop %u CDC TX bytes",
 					(unsigned int)(len - (uint32_t)sent_len));
 			}
+
+			LOG_INF("CDC IRQ TX requested:%u sent:%d tx_rb_remain:%u",
+				(unsigned int)len, sent_len,
+				ring_buf_size_get(&ctx.tx_ringbuf));
 		}
 	}
 }
 
-static int module_init(void)
+static int do_init(void)
 {
-	if (!device_is_ready(cdc_dev)) {
+	if (!device_is_ready(ctx.cdc_dev)) {
 		LOG_ERR("CDC ACM device not ready");
 		return -ENODEV;
 	}
 
 	reset_ring_buffers();
-	k_work_init(&rx_work, rx_work_handler);
+	k_work_init(&ctx.rx_work, rx_work_handler);
-	k_work_init_delayable(&control_work, control_work_handler);
+	k_work_init_delayable(&ctx.rx_flush_work, rx_flush_work_handler);
-	uart_irq_callback_set(cdc_dev, cdc_interrupt_handler);
+	uart_irq_callback_set(ctx.cdc_dev, cdc_interrupt_handler);
-	usb_function_prepared = false;
+	ctx.business = USB_CDC_BUS_OFFLINE;
-	return 0;
+	ctx.usb_active = false;
-}
+	ctx.proto_rx_len = 0U;
-
+	LOG_INF("CDC init done (business:%s usb_active:%u lc:%s dev:%p)",
-static int module_start(void)
+		usb_cdc_business_state_name(ctx.business), ctx.usb_active,
-{
+		module_lifecycle_name(ctx.lc.state), ctx.cdc_dev);
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-	if (usb_active) {
-		k_work_reschedule(&control_work, K_NO_WAIT);
-	}
 
 	return 0;
 }
 
-static void module_pause(void)
+static int do_start(void)
 {
-	if (!running) {
+	return 0;
-		return;
-	}
-
-	k_work_cancel_delayable(&control_work);
-	disable_uart_io();
-	running = false;
 }
 
-static bool handle_usb_prepare_event(const struct usb_prepare_event *event)
+static int do_stop(void)
 {
-	ARG_UNUSED(event);
+	LOG_INF("CDC stop requested (business:%s usb_active:%u lc:%s)",
+		usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+		module_lifecycle_name(ctx.lc.state));
+	ctx.business = USB_CDC_BUS_OFFLINE;
+	return 0;
+}
 
-	if (!running || usb_function_prepared) {
+static int apply_lifecycle(enum module_lifecycle target)
+{
+	enum module_lifecycle old_lifecycle = ctx.lc.state;
+	enum usb_cdc_business_state old_business = ctx.business;
+	int err = module_set_lifecycle(&ctx.lc, target);
+
+	if (err) {
+		return err;
+	}
+
+	state_reconcile(old_lifecycle, old_business);
+
+	if (target == LC_RUNNING) {
+		business_state_sync_from_usb();
+	}
+
+	LOG_INF("CDC lifecycle %s -> %s done (business:%s usb_active:%u link:%s)",
+		module_lifecycle_name(old_lifecycle), module_lifecycle_name(target),
+		usb_cdc_business_state_name(ctx.business), ctx.usb_active,
+		proto_link_state_name(transport_link_state_get()));
+
+	return 0;
+}
+
+static bool handle_usb_state_event(const struct usb_state_event *event)
+{
+	bool new_usb_active = (event->state == USB_STATE_ACTIVE);
+
+	if (new_usb_active == ctx.usb_active) {
 		return false;
 	}
 
-	usb_function_prepared = true;
+	ctx.usb_active = new_usb_active;
-	submit_usb_function_ready_event();
+	LOG_INF("CDC usb_active -> %u from usb_state:%d (business:%s lc:%s)",
-	return false;
+		ctx.usb_active, event->state,
-}
+		usb_cdc_business_state_name(ctx.business),
-
+		module_lifecycle_name(ctx.lc.state));
-static bool handle_usb_device_state_event(const struct usb_device_state_event *event)
+	business_state_sync_from_usb();
-{
-	bool new_usb_active = (event->state == USB_DEVICE_STATE_ACTIVE);
-
-	if (new_usb_active == usb_active) {
-		return false;
-	}
-
-	usb_active = new_usb_active;
-
-	if (!usb_active) {
-		k_work_cancel_delayable(&control_work);
-		disable_uart_io();
-	} else if (running) {
-		k_work_reschedule(&control_work, K_NO_WAIT);
-	}
 
 	return false;
 }
 
-static bool handle_usb_cdc_tx_event(const struct usb_cdc_tx_event *event)
+static bool handle_usb_control_event(const struct usb_control_event *event)
+{
+	if (event->dev != ctx.cdc_dev) {
+		return false;
+	}
+
+	switch (event->type) {
+	case USB_CONTROL_EVENT_CDC_LINE_STATE:
+		LOG_INF("CDC control event line_state dtr:%u usb_active:%u lc:%s business:%s",
+			event->data.cdc_line_state.dtr, ctx.usb_active,
+			module_lifecycle_name(ctx.lc.state),
+			usb_cdc_business_state_name(ctx.business));
+		if (!ctx.usb_active || !lifecycle_is_ready()) {
+			LOG_INF("CDC line_state ignored: usb_active:%u lc:%s",
+				ctx.usb_active, module_lifecycle_name(ctx.lc.state));
+			return false;
+		}
+
+		if (event->data.cdc_line_state.dtr) {
+			LOG_INF("CDC DTR set");
+			business_state_set(USB_CDC_SESSION_READY);
+			kick_tx();
+		} else {
+			LOG_INF("CDC DTR cleared");
+			business_state_set(USB_CDC_WAIT_DTR);
+		}
+		return false;
+
+	case USB_CONTROL_EVENT_CDC_LINE_CODING:
+		LOG_INF("CDC control event line_coding baud:%u data:%u stop:%u parity:%u flow:%u business:%s",
+			event->data.cdc_line_coding.baudrate,
+			event->data.cdc_line_coding.data_bits,
+			event->data.cdc_line_coding.stop_bits,
+			event->data.cdc_line_coding.parity,
+			event->data.cdc_line_coding.flow_ctrl,
+			usb_cdc_business_state_name(ctx.business));
+		if (event->data.cdc_line_coding.baudrate != 0U) {
+			LOG_INF("CDC baudrate %u",
+				event->data.cdc_line_coding.baudrate);
+			if (event->data.cdc_line_coding.baudrate !=
+			    USB_CDC_EXPECTED_BAUDRATE) {
+				LOG_WRN("Expected CDC baudrate %u, got %u",
+					USB_CDC_EXPECTED_BAUDRATE,
+					event->data.cdc_line_coding.baudrate);
+			}
+		}
+
+#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
+		if ((event->data.cdc_line_coding.data_bits != 0U) ||
+		    (event->data.cdc_line_coding.stop_bits != 0U) ||
+		    (event->data.cdc_line_coding.parity != 0U) ||
+		    (event->data.cdc_line_coding.flow_ctrl != 0U)) {
+			LOG_INF("CDC line coding data:%u stop:%u parity:%u flow:%u",
+				event->data.cdc_line_coding.data_bits,
+				event->data.cdc_line_coding.stop_bits,
+				event->data.cdc_line_coding.parity,
+				event->data.cdc_line_coding.flow_ctrl);
+		}
+#endif
+		return false;
+
+	default:
+		return false;
+	}
+}
+
+static bool handle_proto_tx_event(const struct proto_tx_event *event)
 {
 	uint32_t written;
 	unsigned int key;
 
-	if (!running || !usb_active || !dtr_ready) {
+	if (event->transport != PROTO_TRANSPORT_USB_CDC) {
+		return false;
+	}
+
+	if (transport_link_state_get() != PROTO_TRANSPORT_LINK_READY) {
+		LOG_INF("CDC proto_tx ignored len:%u link:%s business:%s usb_active:%u",
+			(unsigned int)event->dyndata.size,
+			proto_link_state_name(transport_link_state_get()),
+			usb_cdc_business_state_name(ctx.business), ctx.usb_active);
 		return false;
 	}
 
 	key = irq_lock();
-	written = ring_buf_put(&tx_ringbuf, event->dyndata.data,
+	written = ring_buf_put(&ctx.tx_ringbuf, event->dyndata.data,
 			       (uint32_t)event->dyndata.size);
 	irq_unlock(key);
 
+	LOG_INF("CDC proto_tx queued len:%u written:%u tx_rb:%u",
+		(unsigned int)event->dyndata.size, (unsigned int)written,
+		ring_buf_size_get(&ctx.tx_ringbuf));
+
 	if (written < event->dyndata.size) {
 		LOG_WRN("Drop %zu CDC TX bytes", event->dyndata.size - written);
 	}
@@ -352,63 +581,40 @@ static bool handle_usb_cdc_tx_event(const struct usb_cdc_tx_event *event)
 
 static bool app_event_handler(const struct app_event_header *aeh)
 {
-	if (is_usb_device_state_event(aeh)) {
+	if (is_usb_state_event(aeh)) {
-		return handle_usb_device_state_event(cast_usb_device_state_event(aeh));
+		return handle_usb_state_event(cast_usb_state_event(aeh));
 	}
 
-	if (is_usb_prepare_event(aeh)) {
+	if (is_proto_tx_event(aeh)) {
-		return handle_usb_prepare_event(cast_usb_prepare_event(aeh));
+		return handle_proto_tx_event(cast_proto_tx_event(aeh));
 	}
 
-	if (is_usb_cdc_tx_event(aeh)) {
+	if (is_usb_control_event(aeh)) {
-		return handle_usb_cdc_tx_event(cast_usb_cdc_tx_event(aeh));
+		return handle_usb_control_event(cast_usb_control_event(aeh));
 	}
 
 	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
+		const struct module_state_event *event =
+			cast_module_state_event(aeh);
 
 		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
+			(void)apply_lifecycle(LC_RUNNING);
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			module_pause();
+			(void)apply_lifecycle(LC_STOPPED);
-			module_set_state(MODULE_STATE_STANDBY);
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
-			int err = module_start();
+			(void)apply_lifecycle(LC_RUNNING);
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
 		}
 
 		return false;
@@ -419,8 +625,8 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_prepare_event);
+APP_EVENT_SUBSCRIBE(MODULE, proto_tx_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_device_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, usb_control_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_cdc_tx_event);
+APP_EVENT_SUBSCRIBE(MODULE, usb_state_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/usb_cdc_test_module.c

@@ -1,164 +0,0 @@
-#include <stdbool.h>
-#include <string.h>
-
-#include <app_event_manager.h>
-
-#define MODULE usb_cdc_test_module
-#include <caf/events/module_state_event.h>
-#include <caf/events/power_event.h>
-
-#include <zephyr/kernel.h>
-#include <zephyr/logging/log.h>
-
-#include "usb_cdc_tx_event.h"
-#include "usb_device_state_event.h"
-
-LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
-
-#define USB_CDC_TEST_PERIOD K_SECONDS(1)
-
-static const uint8_t hello_message[] = "hello\r\n";
-
-static struct k_work_delayable hello_work;
-static bool initialized;
-static bool running;
-static bool usb_active;
-
-static void submit_hello_message(void)
-{
-	struct usb_cdc_tx_event *event =
-		new_usb_cdc_tx_event(sizeof(hello_message) - 1U);
-
-	memcpy(event->dyndata.data, hello_message, sizeof(hello_message) - 1U);
-	APP_EVENT_SUBMIT(event);
-}
-
-static void hello_work_handler(struct k_work *work)
-{
-	ARG_UNUSED(work);
-
-	if (!running || !usb_active) {
-		return;
-	}
-
-	submit_hello_message();
-	k_work_reschedule(&hello_work, USB_CDC_TEST_PERIOD);
-}
-
-static int module_init(void)
-{
-	k_work_init_delayable(&hello_work, hello_work_handler);
-	return 0;
-}
-
-static int module_start(void)
-{
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-	if (usb_active) {
-		k_work_reschedule(&hello_work, USB_CDC_TEST_PERIOD);
-	}
-
-	return 0;
-}
-
-static void module_pause(void)
-{
-	if (!running) {
-		return;
-	}
-
-	k_work_cancel_delayable(&hello_work);
-	running = false;
-}
-
-static bool handle_usb_device_state_event(const struct usb_device_state_event *event)
-{
-	bool new_usb_active = (event->state == USB_DEVICE_STATE_ACTIVE);
-
-	if (new_usb_active == usb_active) {
-		return false;
-	}
-
-	usb_active = new_usb_active;
-
-	if (!running) {
-		return false;
-	}
-
-	if (usb_active) {
-		k_work_reschedule(&hello_work, USB_CDC_TEST_PERIOD);
-	} else {
-		k_work_cancel_delayable(&hello_work);
-	}
-
-	return false;
-}
-
-static bool app_event_handler(const struct app_event_header *aeh)
-{
-	if (is_usb_device_state_event(aeh)) {
-		return handle_usb_device_state_event(cast_usb_device_state_event(aeh));
-	}
-
-	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
-
-		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	if (is_power_down_event(aeh)) {
-		if (initialized) {
-			module_pause();
-			module_set_state(MODULE_STATE_STANDBY);
-		}
-
-		return false;
-	}
-
-	if (is_wake_up_event(aeh)) {
-		if (initialized) {
-			int err = module_start();
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	return false;
-}
-
-APP_EVENT_LISTENER(MODULE, app_event_handler);
-APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_device_state_event);
-APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
-APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/usb_device_module.c

@@ -6,17 +6,19 @@
 
 #define MODULE usb_device_module
 #include <caf/events/module_state_event.h>
+#include <caf/events/module_suspend_event.h>
 #include <caf/events/power_event.h>
 
+#include <zephyr/drivers/uart.h>
 #include <zephyr/logging/log.h>
 #include <zephyr/usb/usbd.h>
 
 #include <caf/events/power_manager_event.h>
 
-#include "usb_device_module.h"
+#include "module_lifecycle.h"
-#include "usb_device_state_event.h"
+#include "usb_function_hook.h"
-#include "usb_function_ready_event.h"
+#include "usb_control_event.h"
-#include "usb_prepare_event.h"
+#include "usb_state_event.h"
 
 LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 
@@ -24,7 +26,6 @@ LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
 #define USB_DEVICE_PID 0x52F0
 #define USB_DEVICE_MANUFACTURER "Atguigu"
 #define USB_DEVICE_PRODUCT "WH Mini Keyboard"
-#define USB_REQUIRED_FUNCTION_MASK (USB_FUNCTION_HID | USB_FUNCTION_CDC_ACM)
 
 USBD_DEVICE_DEFINE(blinky_usbd, DEVICE_DT_GET(DT_NODELABEL(usbd)),
 		   USB_DEVICE_VID, USB_DEVICE_PID);
@@ -40,37 +41,142 @@ static const char *const class_blocklist[] = {
 	NULL,
 };
 
-static bool initialized;
+enum usb_stack_state {
-static bool running;
+	USB_STACK_UNINITIALIZED = 0,
-static bool prepare_broadcasted;
+	USB_STACK_READY,
-static bool usbd_initialized;
+	USB_STACK_ENABLED,
-static bool usb_enabled;
+};
-static uint8_t ready_function_mask;
-static enum usb_device_state device_state = USB_DEVICE_STATE_DISCONNECTED;
 
-static void submit_usb_device_state_event(enum usb_device_state state)
+enum usb_bus_state {
+	USB_BUS_DISCONNECTED = 0,
+	USB_BUS_POWERED,
+	USB_BUS_ACTIVE,
+	USB_BUS_SUSPENDED,
+};
+
+struct usb_owner_ctx {
+	struct module_lifecycle_ctx lc;
+	enum usb_stack_state stack;
+	enum usb_bus_state bus;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+/* Project exception: mode policy suspend/resume controls USB availability,
+ * while global power events still map to standby lifecycle transitions.
+ */
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_SUSPEND,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct usb_owner_ctx usb_ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.stack = USB_STACK_UNINITIALIZED,
+	.bus = USB_BUS_DISCONNECTED,
+};
+
+static const char *usb_stack_state_name(enum usb_stack_state state)
 {
-	struct usb_device_state_event *event = new_usb_device_state_event();
+	switch (state) {
-
+	case USB_STACK_UNINITIALIZED:
-	event->state = state;
+		return "UNINITIALIZED";
-	APP_EVENT_SUBMIT(event);
+	case USB_STACK_READY:
+		return "READY";
+	case USB_STACK_ENABLED:
+		return "ENABLED";
+	default:
+		return "?";
+	}
 }
 
-static void submit_usb_prepare_event(void)
+static const char *usb_bus_state_name(enum usb_bus_state state)
 {
-	struct usb_prepare_event *event = new_usb_prepare_event();
+	switch (state) {
-
+	case USB_BUS_DISCONNECTED:
-	APP_EVENT_SUBMIT(event);
+		return "DISCONNECTED";
+	case USB_BUS_POWERED:
+		return "POWERED";
+	case USB_BUS_ACTIVE:
+		return "ACTIVE";
+	case USB_BUS_SUSPENDED:
+		return "SUSPENDED";
+	default:
+		return "?";
+	}
 }
 
-static void update_usb_device_state(enum usb_device_state state)
+static const char *usb_public_state_name(enum usb_state state)
 {
-	if (device_state == state) {
+	switch (state) {
+	case USB_STATE_DISABLED:
+		return "DISABLED";
+	case USB_STATE_DISCONNECTED:
+		return "DISCONNECTED";
+	case USB_STATE_POWERED:
+		return "POWERED";
+	case USB_STATE_ACTIVE:
+		return "ACTIVE";
+	case USB_STATE_SUSPENDED:
+		return "SUSPENDED";
+	default:
+		return "?";
+	}
+}
+
+static inline enum usb_state usb_public_state_get(void)
+{
+	if (!module_lifecycle_is_running(&usb_ctx.lc) ||
+	    (usb_ctx.stack == USB_STACK_UNINITIALIZED)) {
+		return USB_STATE_DISABLED;
+	}
+
+	switch (usb_ctx.bus) {
+	case USB_BUS_DISCONNECTED:
+		return USB_STATE_DISCONNECTED;
+	case USB_BUS_POWERED:
+		return USB_STATE_POWERED;
+	case USB_BUS_ACTIVE:
+		return USB_STATE_ACTIVE;
+	case USB_BUS_SUSPENDED:
+		return USB_STATE_SUSPENDED;
+	default:
+		return USB_STATE_DISABLED;
+	}
+}
+
+static inline void usb_bus_set(enum usb_bus_state state)
+{
+	enum usb_bus_state old_state = usb_ctx.bus;
+
+	if (usb_ctx.bus == state) {
 		return;
 	}
 
-	device_state = state;
+	usb_ctx.bus = state;
-	submit_usb_device_state_event(state);
+
+	LOG_INF("USB bus %s -> %s (stack:%s lc:%s public:%s)",
+		usb_bus_state_name(old_state),
+		usb_bus_state_name(usb_ctx.bus),
+		usb_stack_state_name(usb_ctx.stack),
+		module_lifecycle_name(usb_ctx.lc.state),
+		usb_public_state_name(usb_public_state_get()));
+
+	if (module_lifecycle_is_initialized(&usb_ctx.lc)) {
+		submit_usb_state(usb_public_state_get());
+	}
 }
 
 static void update_power_manager_restriction(bool vbus_present)
@@ -119,52 +225,113 @@ static void usbd_msg_cb(struct usbd_context *const usbd_ctx,
 {
 	ARG_UNUSED(usbd_ctx);
 
+	LOG_INF("USBD msg:%s status:%u dev:%p stack:%s bus:%s lc:%s",
+		usbd_msg_type_string(msg->type), msg->status, msg->dev,
+		usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus),
+		module_lifecycle_name(usb_ctx.lc.state));
+
+	if (msg->type == USBD_MSG_CDC_ACM_CONTROL_LINE_STATE) {
+		uint32_t dtr = 0U;
+		int err = uart_line_ctrl_get(msg->dev, UART_LINE_CTRL_DTR, &dtr);
+
+		if (err) {
+			LOG_WRN("Failed to get CDC DTR (%d)", err);
+		} else {
+			LOG_INF("CDC control line state DTR:%u dev:%p", dtr, msg->dev);
+			submit_usb_control_cdc_line_state_event(msg->dev, dtr != 0U);
+		}
+
+		return;
+	}
+
+	if (msg->type == USBD_MSG_CDC_ACM_LINE_CODING) {
+		uint32_t baudrate = 0U;
+		uint8_t data_bits = 0U;
+		uint8_t stop_bits = 0U;
+		uint8_t parity = 0U;
+		uint8_t flow_ctrl = 0U;
+		int err;
+
+		err = uart_line_ctrl_get(msg->dev, UART_LINE_CTRL_BAUD_RATE, &baudrate);
+		if (err) {
+			LOG_WRN("Failed to get CDC baudrate (%d)", err);
+		}
+
+#ifdef CONFIG_UART_USE_RUNTIME_CONFIGURE
+		{
+			struct uart_config cfg;
+
+			err = uart_config_get(msg->dev, &cfg);
+			if (err) {
+				LOG_WRN("uart_config_get failed (%d)", err);
+			} else {
+				data_bits = (uint8_t)cfg.data_bits;
+				stop_bits = (uint8_t)cfg.stop_bits;
+				parity = (uint8_t)cfg.parity;
+				flow_ctrl = (uint8_t)cfg.flow_ctrl;
+			}
+		}
+#endif
+
+		LOG_INF("CDC line coding baud:%u data:%u stop:%u parity:%u flow:%u dev:%p",
+			baudrate, data_bits, stop_bits, parity, flow_ctrl, msg->dev);
+		submit_usb_control_cdc_line_coding_event(msg->dev, baudrate,
+						 data_bits, stop_bits,
+						 parity, flow_ctrl);
+		return;
+	}
+
 	switch (msg->type) {
 	case USBD_MSG_VBUS_READY:
 		update_power_manager_restriction(true);
-		if (!usb_enabled) {
+		usb_bus_set(USB_BUS_POWERED);
-			int err = usbd_enable(&blinky_usbd);
+
+		if (module_lifecycle_is_running(&usb_ctx.lc) &&
+		    (usb_ctx.stack == USB_STACK_READY)) {
+			int err = do_start();
 
 			if (err) {
-				LOG_ERR("usbd_enable failed (%d)", err);
+				LOG_ERR("USB start on VBUS ready failed (%d)", err);
-			} else {
-				usb_enabled = true;
-				update_usb_device_state(USB_DEVICE_STATE_POWERED);
 			}
 		}
 		break;
 
 	case USBD_MSG_VBUS_REMOVED:
-		update_power_manager_restriction(false);
+		if (usb_ctx.stack == USB_STACK_ENABLED) {
-		if (usb_enabled) {
+			int err = do_stop();
-			int err = usbd_disable(&blinky_usbd);
 
 			if (err) {
-				LOG_ERR("usbd_disable failed (%d)", err);
+				LOG_ERR("USB stop on VBUS removed failed (%d)", err);
 			}
+		} else {
+			update_power_manager_restriction(false);
 		}
 
-		usb_enabled = false;
+		if (usb_ctx.stack != USB_STACK_UNINITIALIZED) {
-		update_usb_device_state(USB_DEVICE_STATE_DISCONNECTED);
+			usb_ctx.stack = USB_STACK_READY;
+		}
+
+		usb_bus_set(USB_BUS_DISCONNECTED);
 		break;
 
 	case USBD_MSG_CONFIGURATION:
 		if (msg->status) {
-			update_usb_device_state(USB_DEVICE_STATE_ACTIVE);
+			usb_bus_set(USB_BUS_ACTIVE);
-		} else if (usb_enabled) {
+		} else if (usb_ctx.stack == USB_STACK_ENABLED) {
-			update_usb_device_state(USB_DEVICE_STATE_POWERED);
+			usb_bus_set(USB_BUS_POWERED);
 		}
 		break;
 
 	case USBD_MSG_SUSPEND:
-		if (usb_enabled) {
+		if (usb_ctx.stack == USB_STACK_ENABLED) {
-			update_usb_device_state(USB_DEVICE_STATE_SUSPENDED);
+			usb_bus_set(USB_BUS_SUSPENDED);
 		}
 		break;
 
 	case USBD_MSG_RESUME:
-		if (usb_enabled) {
+		if (usb_ctx.stack == USB_STACK_ENABLED) {
-			update_usb_device_state(USB_DEVICE_STATE_ACTIVE);
+			usb_bus_set(USB_BUS_ACTIVE);
 		}
 		break;
 
@@ -173,10 +340,30 @@ static void usbd_msg_cb(struct usbd_context *const usbd_ctx,
 	}
 }
 
-static int usb_stack_init(void)
+static int do_init(void)
 {
 	int err;
 
+	usb_ctx.stack = USB_STACK_UNINITIALIZED;
+	usb_ctx.bus = USB_BUS_DISCONNECTED;
+	LOG_INF("USB init start (stack:%s bus:%s lc:%s)",
+		usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus),
+		module_lifecycle_name(usb_ctx.lc.state));
+	update_power_manager_restriction(false);
+
+	STRUCT_SECTION_FOREACH(usb_function_hook, hook) {
+		if (hook->pre_stack_init == NULL) {
+			continue;
+		}
+
+		err = hook->pre_stack_init();
+		if (err) {
+			LOG_ERR("USB function hook %s failed (%d)", hook->name, err);
+			return err;
+		}
+	}
+
 	err = usbd_msg_register_cb(&blinky_usbd, usbd_msg_cb);
 	if (err) {
 		LOG_ERR("usbd_msg_register_cb failed (%d)", err);
@@ -195,7 +382,29 @@ static int usb_stack_init(void)
 		return err;
 	}
 
-	usbd_initialized = true;
+	usb_ctx.stack = USB_STACK_READY;
+	LOG_INF("USB init done (stack:%s bus:%s lc:%s public:%s)",
+		usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus),
+		module_lifecycle_name(usb_ctx.lc.state),
+		usb_public_state_name(usb_public_state_get()));
+
+	return 0;
+}
+
+static int do_start(void)
+{
+	int err;
+
+	LOG_INF("USB start requested (stack:%s bus:%s lc:%s)",
+		usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus),
+		module_lifecycle_name(usb_ctx.lc.state));
+
+	if (usb_ctx.stack == USB_STACK_ENABLED) {
+		LOG_INF("USB start ignored: already enabled");
+		return 0;
+	}
 
 	if (!usbd_can_detect_vbus(&blinky_usbd)) {
 		err = usbd_enable(&blinky_usbd);
@@ -204,105 +413,97 @@ static int usb_stack_init(void)
 			return err;
 		}
 
-		usb_enabled = true;
+		usb_ctx.stack = USB_STACK_ENABLED;
-		update_usb_device_state(USB_DEVICE_STATE_POWERED);
+		usb_ctx.bus = USB_BUS_POWERED;
+		LOG_INF("USB enabled without VBUS detect (stack:%s bus:%s)",
+			usb_stack_state_name(usb_ctx.stack),
+			usb_bus_state_name(usb_ctx.bus));
+		update_power_manager_restriction(true);
+		return 0;
 	}
 
+	if (usb_ctx.bus == USB_BUS_DISCONNECTED) {
+		LOG_INF("USB start deferred: waiting for VBUS");
+		return 0;
+	}
+
+	err = usbd_enable(&blinky_usbd);
+	if (err) {
+		LOG_ERR("usbd_enable failed (%d)", err);
+		return err;
+	}
+
+	usb_ctx.stack = USB_STACK_ENABLED;
+	LOG_INF("USB enabled (stack:%s bus:%s)", usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus));
+	update_power_manager_restriction(true);
 	return 0;
 }
 
-static int module_init(void)
+static int do_stop(void)
 {
-	device_state = USB_DEVICE_STATE_DISCONNECTED;
+	int err;
-	usb_enabled = false;
+
-	ready_function_mask = 0U;
+	LOG_INF("USB stop requested (stack:%s bus:%s lc:%s)",
-	prepare_broadcasted = false;
+		usb_stack_state_name(usb_ctx.stack),
-	usbd_initialized = false;
+		usb_bus_state_name(usb_ctx.bus),
+		module_lifecycle_name(usb_ctx.lc.state));
+
+	if (usb_ctx.stack == USB_STACK_ENABLED) {
+		err = usbd_disable(&blinky_usbd);
+		if (err) {
+			LOG_ERR("usbd_disable failed (%d)", err);
+			return err;
+		}
+	}
+
+	usb_ctx.stack = USB_STACK_READY;
+	LOG_INF("USB stopped (stack:%s bus:%s)", usb_stack_state_name(usb_ctx.stack),
+		usb_bus_state_name(usb_ctx.bus));
 	update_power_manager_restriction(false);
-
 	return 0;
 }
 
-static int module_start(void)
-{
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-
-	if (usbd_initialized || prepare_broadcasted) {
-		return 0;
-	}
-
-	ready_function_mask = 0U;
-	prepare_broadcasted = true;
-	submit_usb_prepare_event();
-
-	return 0;
-}
-
-static void module_pause(void)
-{
-	if (!running) {
-		return;
-	}
-
-	running = false;
-}
-
 static bool handle_module_state_event(const struct module_state_event *event)
 {
 	if (!check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
 		return false;
 	}
 
-	if (!initialized) {
+	if (module_set_lifecycle(&usb_ctx.lc, LC_RUNNING) == 0) {
-		int err = module_init();
+		submit_usb_state(usb_public_state_get());
-
-		if (err) {
-			module_set_state(MODULE_STATE_ERROR);
-			return false;
-		}
-
-		initialized = true;
-	}
-
-	if (!running) {
-		int err = module_start();
-
-		if (err) {
-			module_set_state(MODULE_STATE_ERROR);
-		} else if (usbd_initialized) {
-			module_set_state(MODULE_STATE_READY);
-		}
 	}
 
 	return false;
 }
 
-static bool handle_usb_function_ready_event(const struct usb_function_ready_event *event)
+static bool handle_module_suspend_req_event(
+	const struct module_suspend_req_event *event)
 {
-	int err;
+	if ((event->sink_module_id != MODULE_ID(MODULE)) ||
-
+	    (usb_ctx.lc.state != LC_RUNNING)) {
-	if (!running || !prepare_broadcasted || usbd_initialized) {
 		return false;
 	}
 
-	ready_function_mask |= event->function_mask;
+	if (module_set_lifecycle(&usb_ctx.lc, LC_STOPPED) == 0) {
+		submit_usb_state(usb_public_state_get());
+	}
 
-	if ((ready_function_mask & USB_REQUIRED_FUNCTION_MASK) !=
+	return false;
-	    USB_REQUIRED_FUNCTION_MASK) {
+}
+
+static bool handle_module_resume_req_event(
+	const struct module_resume_req_event *event)
+{
+	if ((event->sink_module_id != MODULE_ID(MODULE)) ||
+	    (usb_ctx.lc.state != LC_STOPPED)) {
 		return false;
 	}
 
-	err = usb_stack_init();
+	if (module_set_lifecycle(&usb_ctx.lc, LC_RUNNING) == 0) {
-	if (err) {
+		submit_usb_state(usb_public_state_get());
-		module_set_state(MODULE_STATE_ERROR);
-		return false;
 	}
 
-	module_set_state(MODULE_STATE_READY);
 	return false;
 }
 
@@ -312,27 +513,30 @@ static bool app_event_handler(const struct app_event_header *aeh)
 		return handle_module_state_event(cast_module_state_event(aeh));
 	}
 
-	if (is_usb_function_ready_event(aeh)) {
+	if (is_module_suspend_req_event(aeh)) {
-		return handle_usb_function_ready_event(cast_usb_function_ready_event(aeh));
+		return handle_module_suspend_req_event(
+			cast_module_suspend_req_event(aeh));
+	}
+
+	if (is_module_resume_req_event(aeh)) {
+		return handle_module_resume_req_event(
+			cast_module_resume_req_event(aeh));
 	}
 
 	if (is_power_down_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&usb_ctx.lc)) {
-			module_pause();
+			if (module_set_lifecycle(&usb_ctx.lc, LC_STOPPED) == 0) {
-			module_set_state(MODULE_STATE_STANDBY);
+				submit_usb_state(usb_public_state_get());
+			}
 		}
 
 		return false;
 	}
 
 	if (is_wake_up_event(aeh)) {
-		if (initialized) {
+		if (module_lifecycle_is_initialized(&usb_ctx.lc)) {
-			int err = module_start();
+			if (module_set_lifecycle(&usb_ctx.lc, LC_RUNNING) == 0) {
-
+				submit_usb_state(usb_public_state_get());
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else if (usbd_initialized) {
-				module_set_state(MODULE_STATE_READY);
 			}
 		}
 
@@ -344,6 +548,7 @@ static bool app_event_handler(const struct app_event_header *aeh)
 
 APP_EVENT_LISTENER(MODULE, app_event_handler);
 APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_function_ready_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_suspend_req_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_resume_req_event);
 APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
 APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/usb_function_hook.ld

@@ -0,0 +1 @@
+ITERABLE_SECTION_ROM(usb_function_hook, Z_LINK_ITERABLE_SUBALIGN)

src/usb_hid_consumer_module.c

@@ -0,0 +1,315 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+
+#define MODULE usb_hid_consumer_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.h>
+
+#include <zephyr/device.h>
+#include <zephyr/drivers/usb/udc_buf.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/usb/class/usbd_hid.h>
+
+#include "hid_channel_state_event.h"
+#include "hid_report_sent_event.h"
+#include "hid_tx_report_event.h"
+#include "keyboard_core.h"
+#include "module_lifecycle.h"
+#include "usb_function_hook.h"
+#include "usb_state_event.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+static const uint8_t consumer_report_desc[] = {
+	0x05, 0x0C, 0x09, 0x01, 0xA1, 0x01, 0x15, 0x00,
+	0x26, 0xFF, 0x03, 0x19, 0x00, 0x2A, 0xFF, 0x03,
+	0x75, 0x10, 0x95, 0x01, 0x81, 0x00, 0xC0
+};
+
+struct usb_hid_consumer_module_ctx {
+	struct module_lifecycle_ctx lc;
+	const struct device *hid_dev;
+	bool usb_active;
+	bool iface_ready;
+	bool report_in_flight;
+	uint16_t in_flight_sequence;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct usb_hid_consumer_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.hid_dev = DEVICE_DT_GET(DT_NODELABEL(hid_consumer)),
+};
+
+UDC_STATIC_BUF_DEFINE(consumer_tx_buf, KEYBOARD_CONSUMER_REPORT_SIZE);
+
+static void publish_consumer_state(void)
+{
+	bool ready = module_lifecycle_is_running(&ctx.lc) &&
+		     ctx.usb_active && ctx.iface_ready;
+
+	submit_hid_channel_state_event(HID_SEND_CH_USB_CONSUMER,
+				       ready ? BIT(KEYBOARD_REPORT_TYPE_CONSUMER) : 0U,
+				       KEYBOARD_PROTOCOL_MODE_REPORT);
+}
+
+static void consumer_iface_ready(const struct device *dev, const bool ready)
+{
+	ARG_UNUSED(dev);
+
+	ctx.iface_ready = ready;
+	if (!ready) {
+		ctx.report_in_flight = false;
+	}
+
+	LOG_INF("%s interface %s", ctx.hid_dev->name,
+		ready ? "ready" : "not ready");
+	publish_consumer_state();
+}
+
+static int consumer_get_report(const struct device *dev,
+			       const uint8_t type, const uint8_t id,
+			       const uint16_t len, uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(type);
+	ARG_UNUSED(id);
+	ARG_UNUSED(len);
+	ARG_UNUSED(buf);
+
+	return -ENOTSUP;
+}
+
+static int consumer_set_report(const struct device *dev,
+			       const uint8_t type, const uint8_t id,
+			       const uint16_t len, const uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(type);
+	ARG_UNUSED(id);
+	ARG_UNUSED(len);
+	ARG_UNUSED(buf);
+
+	return -ENOTSUP;
+}
+
+static void consumer_set_idle(const struct device *dev,
+			      const uint8_t id, const uint32_t duration)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(id);
+	ARG_UNUSED(duration);
+}
+
+static uint32_t consumer_get_idle(const struct device *dev, const uint8_t id)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(id);
+
+	return 0U;
+}
+
+static void consumer_set_protocol(const struct device *dev, const uint8_t proto)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(proto);
+}
+
+static void consumer_input_report_done(const struct device *dev,
+				       const uint8_t *const report)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(report);
+
+	ctx.report_in_flight = false;
+	submit_hid_report_sent_event(HID_SEND_CH_USB_CONSUMER,
+				     KEYBOARD_REPORT_TYPE_CONSUMER,
+				     ctx.in_flight_sequence, false);
+}
+
+static void consumer_output_report(const struct device *dev,
+				   const uint16_t len,
+				   const uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(len);
+	ARG_UNUSED(buf);
+}
+
+static const struct hid_device_ops consumer_ops = {
+	.iface_ready = consumer_iface_ready,
+	.get_report = consumer_get_report,
+	.set_report = consumer_set_report,
+	.set_idle = consumer_set_idle,
+	.get_idle = consumer_get_idle,
+	.set_protocol = consumer_set_protocol,
+	.input_report_done = consumer_input_report_done,
+	.output_report = consumer_output_report,
+};
+
+static int usb_hid_consumer_register_device(void)
+{
+	if (!device_is_ready(ctx.hid_dev)) {
+		LOG_ERR("HID device %s not ready", ctx.hid_dev->name);
+		return -ENODEV;
+	}
+
+	return hid_device_register(ctx.hid_dev, consumer_report_desc,
+				   sizeof(consumer_report_desc), &consumer_ops);
+}
+
+USB_FUNCTION_HOOK_DEFINE(usb_hid_consumer_hook, usb_hid_consumer_register_device);
+
+static int do_init(void)
+{
+	ctx.usb_active = false;
+	ctx.iface_ready = false;
+	ctx.report_in_flight = false;
+	return 0;
+}
+
+static int do_start(void)
+{
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	publish_consumer_state();
+	return 0;
+}
+
+static int do_stop(void)
+{
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	ctx.report_in_flight = false;
+	publish_consumer_state();
+
+	return 0;
+}
+
+static bool handle_usb_state_event(const struct usb_state_event *event)
+{
+	bool new_usb_active = (event->state == USB_STATE_ACTIVE);
+
+	if (new_usb_active == ctx.usb_active) {
+		return false;
+	}
+
+	ctx.usb_active = new_usb_active;
+	if (!ctx.usb_active) {
+		ctx.iface_ready = false;
+		ctx.report_in_flight = false;
+	}
+
+	publish_consumer_state();
+	return false;
+}
+
+static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
+{
+	int err;
+
+	if (!module_lifecycle_is_running(&ctx.lc) || !ctx.usb_active ||
+	    (event->channel != HID_SEND_CH_USB_CONSUMER)) {
+		return false;
+	}
+
+	if (event->report_type != KEYBOARD_REPORT_TYPE_CONSUMER) {
+		return false;
+	}
+
+	if (!ctx.iface_ready) {
+		return false;
+	}
+
+	if (ctx.report_in_flight) {
+		LOG_WRN("Drop USB consumer report while previous report is in flight");
+		return false;
+	}
+
+	memcpy(consumer_tx_buf, event->dyndata.data, event->dyndata.size);
+	err = hid_device_submit_report(ctx.hid_dev, (uint16_t)event->dyndata.size,
+				       consumer_tx_buf);
+	if (err) {
+		LOG_WRN("USB consumer report submit failed (%d)", err);
+		submit_hid_report_sent_event(HID_SEND_CH_USB_CONSUMER,
+					     KEYBOARD_REPORT_TYPE_CONSUMER,
+					     event->sequence, true);
+	} else {
+		ctx.report_in_flight = true;
+		ctx.in_flight_sequence = event->sequence;
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_hid_tx_report_event(aeh)) {
+		return handle_hid_tx_report_event(cast_hid_tx_report_event(aeh));
+	}
+
+	if (is_usb_state_event(aeh)) {
+		return handle_usb_state_event(cast_usb_state_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	if (is_power_down_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
+		}
+
+		return false;
+	}
+
+	if (is_wake_up_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_tx_report_event);
+APP_EVENT_SUBSCRIBE(MODULE, usb_state_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/usb_hid_keyboard_module.c

@@ -0,0 +1,388 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+
+#define MODULE usb_hid_keyboard_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.h>
+
+#include <zephyr/device.h>
+#include <zephyr/drivers/usb/udc_buf.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/usb/class/usbd_hid.h>
+
+#include "hid_channel_state_event.h"
+#include "hid_led_event.h"
+#include "hid_report_sent_event.h"
+#include "hid_tx_report_event.h"
+#include "keyboard_core.h"
+#include "module_lifecycle.h"
+#include "set_protocol_event.h"
+#include "usb_function_hook.h"
+#include "usb_state_event.h"
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+#define KBD_LED_REPORT_SIZE 1U
+#define KBD_LED_REPORT_WITH_ID_SIZE (KBD_LED_REPORT_SIZE + 1U)
+
+static const uint8_t keyboard_report_desc[] = {
+	0x05, 0x01, 0x09, 0x06, 0xA1, 0x01, 0x05, 0x07,
+	0x19, 0xE0, 0x29, 0xE7, 0x15, 0x00, 0x25, 0x01,
+	0x75, 0x01, 0x95, 0x08, 0x81, 0x02, 0x05, 0x07,
+	0x19, 0x00, 0x2A, 0xDF, 0x00, 0x15, 0x00, 0x25,
+	0x01, 0x75, 0x01, 0x96, 0xE0, 0x00, 0x81, 0x02,
+	0x05, 0x08, 0x19, 0x01, 0x29, 0x05, 0x15, 0x00,
+	0x25, 0x01, 0x75, 0x01, 0x95, 0x05, 0x91, 0x02,
+	0x75, 0x03, 0x95, 0x01, 0x91, 0x01, 0xC0
+};
+
+struct usb_hid_keyboard_module_ctx {
+	struct module_lifecycle_ctx lc;
+	const struct device *hid_dev;
+	enum keyboard_protocol_mode keyboard_protocol_mode;
+	bool usb_active;
+	bool iface_ready;
+	bool report_in_flight;
+	uint16_t in_flight_sequence;
+};
+
+static int do_init(void);
+static int do_start(void);
+static int do_stop(void);
+
+static const struct module_lifecycle_cfg lifecycle_cfg = {
+	.mode = ML_MODE_POWER,
+	.stopped_state = MODULE_STATE_STANDBY,
+};
+
+static const struct module_lifecycle_ops lifecycle_ops = {
+	.do_init = do_init,
+	.do_start = do_start,
+	.do_stop = do_stop,
+};
+
+static struct usb_hid_keyboard_module_ctx ctx = {
+	.lc = {
+		.state = LC_UNINIT,
+		.cfg = &lifecycle_cfg,
+		.ops = &lifecycle_ops,
+	},
+	.hid_dev = DEVICE_DT_GET(DT_NODELABEL(hid_kbd)),
+	.keyboard_protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT,
+};
+
+UDC_STATIC_BUF_DEFINE(keyboard_tx_buf, KEYBOARD_NKRO_REPORT_SIZE);
+
+static void publish_keyboard_state(void)
+{
+	bool ready = module_lifecycle_is_running(&ctx.lc) &&
+		     ctx.usb_active && ctx.iface_ready;
+
+	submit_hid_channel_state_event(HID_SEND_CH_USB_KEYS,
+				       ready ? BIT(KEYBOARD_REPORT_TYPE_KEYS) : 0U,
+				       ctx.keyboard_protocol_mode);
+}
+
+static void keyboard_iface_ready(const struct device *dev, const bool ready)
+{
+	ARG_UNUSED(dev);
+
+	ctx.iface_ready = ready;
+	if (!ready) {
+		ctx.report_in_flight = false;
+	}
+
+	LOG_INF("%s interface %s", ctx.hid_dev->name,
+		ready ? "ready" : "not ready");
+	publish_keyboard_state();
+}
+
+static int keyboard_handle_led_report(const char *source, uint8_t type, uint8_t id,
+				      uint16_t len, const uint8_t *buf)
+{
+	uint8_t led_bm;
+
+	if (buf == NULL) {
+		LOG_WRN("%s invalid keyboard report", source);
+		return -EINVAL;
+	}
+
+
+	if (len == KBD_LED_REPORT_SIZE) {
+		led_bm = buf[0];
+	} else if (len == KBD_LED_REPORT_WITH_ID_SIZE) {
+		led_bm = buf[1];
+	} else {
+		LOG_WRN("%s unexpected len %u type %u id %u",
+			source, len, type, id);
+		if (len >= KBD_LED_REPORT_WITH_ID_SIZE) {
+			LOG_WRN("%s possible report_id=0x%02x led_bm=0x%02x",
+				source, buf[0], buf[1]);
+		}
+		return -EMSGSIZE;
+	}
+
+	submit_hid_led_event(HID_TRANSPORT_USB, led_bm);
+
+	return 0;
+}
+
+static int keyboard_get_report(const struct device *dev,
+			       const uint8_t type, const uint8_t id,
+			       const uint16_t len, uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(type);
+	ARG_UNUSED(id);
+	ARG_UNUSED(len);
+	ARG_UNUSED(buf);
+
+	return -ENOTSUP;
+}
+
+static int keyboard_set_report(const struct device *dev,
+			       const uint8_t type, const uint8_t id,
+			       const uint16_t len, const uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+
+	if (type != HID_REPORT_TYPE_OUTPUT) {
+		LOG_WRN("USB keyboard set_report unsupported type %u id %u len %u",
+			type, id, len);
+		if (buf != NULL) {
+			LOG_HEXDUMP_INF(buf, len, "USB keyboard set_report raw");
+		}
+		return -ENOTSUP;
+	}
+
+	return keyboard_handle_led_report("USB keyboard set_report", type, id,
+					  len, buf);
+}
+
+static void keyboard_set_idle(const struct device *dev,
+			      const uint8_t id, const uint32_t duration)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(id);
+	ARG_UNUSED(duration);
+}
+
+static uint32_t keyboard_get_idle(const struct device *dev, const uint8_t id)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(id);
+
+	return 0U;
+}
+
+static enum keyboard_protocol_mode usb_proto_to_keyboard_proto(uint8_t proto)
+{
+	return (proto == HID_PROTOCOL_BOOT) ? KEYBOARD_PROTOCOL_MODE_BOOT
+					    : KEYBOARD_PROTOCOL_MODE_REPORT;
+}
+
+static void keyboard_set_protocol(const struct device *dev, const uint8_t proto)
+{
+	ARG_UNUSED(dev);
+
+	enum keyboard_protocol_mode new_mode = usb_proto_to_keyboard_proto(proto);
+
+	if (ctx.keyboard_protocol_mode == new_mode) {
+		return;
+	}
+
+	ctx.keyboard_protocol_mode = new_mode;
+	LOG_INF("USB keyboard protocol -> %s",
+		(new_mode == KEYBOARD_PROTOCOL_MODE_BOOT) ? "boot" : "report");
+	submit_set_protocol_event(HID_TRANSPORT_USB, new_mode);
+	publish_keyboard_state();
+}
+
+static void keyboard_input_report_done(const struct device *dev,
+				       const uint8_t *const report)
+{
+	ARG_UNUSED(dev);
+	ARG_UNUSED(report);
+
+	ctx.report_in_flight = false;
+	submit_hid_report_sent_event(HID_SEND_CH_USB_KEYS,
+				     KEYBOARD_REPORT_TYPE_KEYS,
+				     ctx.in_flight_sequence, false);
+}
+
+static void keyboard_output_report(const struct device *dev,
+				   const uint16_t len,
+				   const uint8_t *const buf)
+{
+	ARG_UNUSED(dev);
+
+	(void)keyboard_handle_led_report("USB keyboard output report",
+					 HID_REPORT_TYPE_OUTPUT, 0U,
+					 len, buf);
+}
+
+static const struct hid_device_ops keyboard_ops = {
+	.iface_ready = keyboard_iface_ready,
+	.get_report = keyboard_get_report,
+	.set_report = keyboard_set_report,
+	.set_idle = keyboard_set_idle,
+	.get_idle = keyboard_get_idle,
+	.set_protocol = keyboard_set_protocol,
+	.input_report_done = keyboard_input_report_done,
+	.output_report = keyboard_output_report,
+};
+
+static int usb_hid_keyboard_register_device(void)
+{
+	if (!device_is_ready(ctx.hid_dev)) {
+		LOG_ERR("HID device %s not ready", ctx.hid_dev->name);
+		return -ENODEV;
+	}
+
+	return hid_device_register(ctx.hid_dev, keyboard_report_desc,
+				   sizeof(keyboard_report_desc), &keyboard_ops);
+}
+
+USB_FUNCTION_HOOK_DEFINE(usb_hid_keyboard_hook, usb_hid_keyboard_register_device);
+
+static int do_init(void)
+{
+	ctx.keyboard_protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
+	ctx.usb_active = false;
+	ctx.iface_ready = false;
+	ctx.report_in_flight = false;
+	return 0;
+}
+
+static int do_start(void)
+{
+	if (module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	publish_keyboard_state();
+	return 0;
+}
+
+static int do_stop(void)
+{
+	if (!module_lifecycle_is_running(&ctx.lc)) {
+		return 0;
+	}
+
+	ctx.report_in_flight = false;
+	publish_keyboard_state();
+
+	return 0;
+}
+
+static bool handle_usb_state_event(const struct usb_state_event *event)
+{
+	bool new_usb_active = (event->state == USB_STATE_ACTIVE);
+
+	if (new_usb_active == ctx.usb_active) {
+		return false;
+	}
+
+	ctx.usb_active = new_usb_active;
+	if (!ctx.usb_active) {
+		ctx.iface_ready = false;
+		ctx.report_in_flight = false;
+	}
+
+	publish_keyboard_state();
+	return false;
+}
+
+static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
+{
+	int err;
+
+	if (!module_lifecycle_is_running(&ctx.lc) || !ctx.usb_active ||
+	    (event->channel != HID_SEND_CH_USB_KEYS)) {
+		return false;
+	}
+
+	if (event->report_type != KEYBOARD_REPORT_TYPE_KEYS) {
+		return false;
+	}
+
+	if (event->protocol_mode != ctx.keyboard_protocol_mode) {
+		LOG_WRN("Drop USB keys report due to protocol mismatch");
+		return false;
+	}
+
+	if (!ctx.iface_ready) {
+		return false;
+	}
+
+	if (ctx.report_in_flight) {
+		LOG_WRN("Drop USB keyboard report while previous report is in flight");
+		return false;
+	}
+
+	memcpy(keyboard_tx_buf, event->dyndata.data, event->dyndata.size);
+	err = hid_device_submit_report(ctx.hid_dev, (uint16_t)event->dyndata.size,
+				       keyboard_tx_buf);
+	if (err) {
+			LOG_WRN("USB keyboard report submit failed (%d)", err);
+			submit_hid_report_sent_event(HID_SEND_CH_USB_KEYS,
+						     KEYBOARD_REPORT_TYPE_KEYS,
+						     event->sequence, true);
+	} else {
+		ctx.report_in_flight = true;
+		ctx.in_flight_sequence = event->sequence;
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_hid_tx_report_event(aeh)) {
+		return handle_hid_tx_report_event(cast_hid_tx_report_event(aeh));
+	}
+
+	if (is_usb_state_event(aeh)) {
+		return handle_usb_state_event(cast_usb_state_event(aeh));
+	}
+
+	if (is_module_state_event(aeh)) {
+		const struct module_state_event *event = cast_module_state_event(aeh);
+
+		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	if (is_power_down_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_STOPPED);
+		}
+
+		return false;
+	}
+
+	if (is_wake_up_event(aeh)) {
+		if (module_lifecycle_is_initialized(&ctx.lc)) {
+			(void)module_set_lifecycle(&ctx.lc, LC_RUNNING);
+		}
+
+		return false;
+	}
+
+	return false;
+}
+
+APP_EVENT_LISTENER(MODULE, app_event_handler);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE(MODULE, hid_tx_report_event);
+APP_EVENT_SUBSCRIBE(MODULE, usb_state_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);

src/usb_hid_module.c

@@ -1,647 +0,0 @@
-#include <errno.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <string.h>
-
-#include <app_event_manager.h>
-
-#define MODULE usb_hid_module
-#include <caf/events/module_state_event.h>
-#include <caf/events/power_event.h>
-
-#include <zephyr/device.h>
-#include <zephyr/drivers/usb/udc_buf.h>
-#include <zephyr/logging/log.h>
-#include <zephyr/sys/util.h>
-#include <zephyr/usb/class/usbd_hid.h>
-
-#include "hid_led_event.h"
-#include "hid_report_sent_event.h"
-#include "hid_transport_state_event.h"
-#include "hid_tx_report_event.h"
-#include "keyboard_core.h"
-#include "set_protocol_event.h"
-#include "usb_function_ready_event.h"
-#include "usb_prepare_event.h"
-#include "usb_device_module.h"
-#include "usb_device_state_event.h"
-
-LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
-
-#define KBD_LED_REPORT_SIZE 1U
-
-enum usb_hid_interface {
-	USB_HID_INTERFACE_KEYBOARD,
-	USB_HID_INTERFACE_CONSUMER,
-	USB_HID_INTERFACE_COUNT,
-};
-
-struct usb_hid_interface_state {
-	const struct device *dev;
-	bool ready;
-};
-
-static const uint8_t keyboard_report_desc[] = {
-	0x05, 0x01,             /* Usage Page (Generic Desktop) */
-	0x09, 0x06,             /* Usage (Keyboard) */
-	0xA1, 0x01,             /* Collection (Application) */
-	0x05, 0x07,             /* Usage Page (Keyboard/Keypad) */
-	0x19, 0xE0,             /* Usage Minimum (0xE0) */
-	0x29, 0xE7,             /* Usage Maximum (0xE7) */
-	0x15, 0x00,             /* Logical Minimum (0) */
-	0x25, 0x01,             /* Logical Maximum (1) */
-	0x75, 0x01,             /* Report Size (1) */
-	0x95, 0x08,             /* Report Count (8) */
-	0x81, 0x02,             /* Input (Data,Var,Abs) */
-	0x05, 0x07,             /* Usage Page (Keyboard/Keypad) */
-	0x19, 0x00,             /* Usage Minimum (0x00) */
-	0x2A, 0xDF, 0x00,       /* Usage Maximum (0x00DF) */
-	0x15, 0x00,             /* Logical Minimum (0) */
-	0x25, 0x01,             /* Logical Maximum (1) */
-	0x75, 0x01,             /* Report Size (1) */
-	0x96, 0xE0, 0x00,       /* Report Count (224) */
-	0x81, 0x02,             /* Input (Data,Var,Abs) */
-	0x05, 0x08,             /* Usage Page (LEDs) */
-	0x19, 0x01,             /* Usage Minimum (1) */
-	0x29, 0x05,             /* Usage Maximum (5) */
-	0x15, 0x00,             /* Logical Minimum (0) */
-	0x25, 0x01,             /* Logical Maximum (1) */
-	0x75, 0x01,             /* Report Size (1) */
-	0x95, 0x05,             /* Report Count (5) */
-	0x91, 0x02,             /* Output (Data,Var,Abs) */
-	0x75, 0x03,             /* Report Size (3) */
-	0x95, 0x01,             /* Report Count (1) */
-	0x91, 0x01,             /* Output (Const,Array,Abs) */
-	0xC0                    /* End Collection */
-};
-
-static const uint8_t consumer_report_desc[] = {
-	0x05, 0x0C,             /* Usage Page (Consumer) */
-	0x09, 0x01,             /* Usage (Consumer Control) */
-	0xA1, 0x01,             /* Collection (Application) */
-	0x15, 0x00,             /* Logical Minimum (0) */
-	0x26, 0xFF, 0x03,       /* Logical Maximum (1023) */
-	0x19, 0x00,             /* Usage Minimum (0) */
-	0x2A, 0xFF, 0x03,       /* Usage Maximum (1023) */
-	0x75, 0x10,             /* Report Size (16) */
-	0x95, 0x01,             /* Report Count (1) */
-	0x81, 0x00,             /* Input (Data,Array,Abs) */
-	0xC0                    /* End Collection */
-};
-
-static struct usb_hid_interface_state hid_ifaces[USB_HID_INTERFACE_COUNT] = {
-	[USB_HID_INTERFACE_KEYBOARD] = {
-		.dev = DEVICE_DT_GET(DT_NODELABEL(hid_kbd)),
-	},
-	[USB_HID_INTERFACE_CONSUMER] = {
-		.dev = DEVICE_DT_GET(DT_NODELABEL(hid_consumer)),
-	},
-};
-
-static enum keyboard_protocol_mode keyboard_protocol_mode =
-	KEYBOARD_PROTOCOL_MODE_REPORT;
-static bool initialized;
-static bool running;
-static bool usb_active;
-static bool usb_function_prepared;
-static bool keyboard_report_in_flight;
-static bool consumer_report_in_flight;
-static uint16_t keyboard_in_flight_sequence;
-static uint16_t consumer_in_flight_sequence;
-
-UDC_STATIC_BUF_DEFINE(keyboard_tx_buf, KEYBOARD_NKRO_REPORT_SIZE);
-UDC_STATIC_BUF_DEFINE(consumer_tx_buf, KEYBOARD_CONSUMER_REPORT_SIZE);
-
-static struct usb_hid_interface_state *iface_from_dev(const struct device *dev)
-{
-	for (size_t i = 0; i < ARRAY_SIZE(hid_ifaces); i++) {
-		if (hid_ifaces[i].dev == dev) {
-			return &hid_ifaces[i];
-		}
-	}
-
-	return NULL;
-}
-
-static enum keyboard_protocol_mode usb_proto_to_keyboard_proto(uint8_t proto)
-{
-	return (proto == HID_PROTOCOL_BOOT) ? KEYBOARD_PROTOCOL_MODE_BOOT
-					    : KEYBOARD_PROTOCOL_MODE_REPORT;
-}
-
-static void reset_usb_runtime_state(void)
-{
-	for (size_t i = 0; i < ARRAY_SIZE(hid_ifaces); i++) {
-		hid_ifaces[i].ready = false;
-	}
-
-	usb_active = false;
-	keyboard_report_in_flight = false;
-	consumer_report_in_flight = false;
-}
-
-static void submit_set_protocol_event(enum keyboard_protocol_mode protocol_mode)
-{
-	struct set_protocol_event *event = new_set_protocol_event();
-
-	event->transport = HID_TRANSPORT_USB;
-	event->protocol_mode = protocol_mode;
-	APP_EVENT_SUBMIT(event);
-}
-
-static void submit_hid_led_event(uint8_t led_bm)
-{
-	struct hid_led_event *event = new_hid_led_event();
-
-	event->transport = HID_TRANSPORT_USB;
-	event->led_bm = led_bm;
-	APP_EVENT_SUBMIT(event);
-}
-
-static void submit_transport_state_event(void)
-{
-	struct hid_transport_state_event *event = new_hid_transport_state_event();
-	bool ready = running && usb_active;
-
-	event->transport = HID_TRANSPORT_USB;
-	event->ready = ready;
-	event->keys_ready = ready &&
-			    hid_ifaces[USB_HID_INTERFACE_KEYBOARD].ready;
-	event->consumer_ready = ready &&
-				hid_ifaces[USB_HID_INTERFACE_CONSUMER].ready;
-	event->protocol_mode = keyboard_protocol_mode;
-
-	APP_EVENT_SUBMIT(event);
-}
-
-static void submit_hid_report_sent_event(enum keyboard_report_type report_type,
-					 uint16_t sequence, bool error)
-{
-	struct hid_report_sent_event *event = new_hid_report_sent_event();
-
-	event->transport = HID_TRANSPORT_USB;
-	event->report_type = report_type;
-	event->sequence = sequence;
-	event->error = error;
-
-	APP_EVENT_SUBMIT(event);
-}
-
-static void submit_usb_function_ready_event(void)
-{
-	struct usb_function_ready_event *event = new_usb_function_ready_event();
-
-	event->function_mask = USB_FUNCTION_HID;
-	APP_EVENT_SUBMIT(event);
-}
-
-static void keyboard_iface_ready(const struct device *dev, const bool ready)
-{
-	struct usb_hid_interface_state *iface = iface_from_dev(dev);
-
-	if (!iface) {
-		return;
-	}
-
-	iface->ready = ready;
-	if (!ready) {
-		keyboard_report_in_flight = false;
-	}
-
-	LOG_INF("%s interface %s", dev->name, ready ? "ready" : "not ready");
-	submit_transport_state_event();
-}
-
-static int keyboard_get_report(const struct device *dev,
-			       const uint8_t type, const uint8_t id,
-			       const uint16_t len, uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(type);
-	ARG_UNUSED(id);
-	ARG_UNUSED(len);
-	ARG_UNUSED(buf);
-
-	return -ENOTSUP;
-}
-
-static int keyboard_set_report(const struct device *dev,
-			       const uint8_t type, const uint8_t id,
-			       const uint16_t len, const uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(type);
-	ARG_UNUSED(id);
-	ARG_UNUSED(len);
-	ARG_UNUSED(buf);
-
-	return -ENOTSUP;
-}
-
-static void keyboard_set_idle(const struct device *dev,
-			      const uint8_t id, const uint32_t duration)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(id);
-	ARG_UNUSED(duration);
-}
-
-static uint32_t keyboard_get_idle(const struct device *dev, const uint8_t id)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(id);
-
-	return 0U;
-}
-
-static void keyboard_set_protocol(const struct device *dev, const uint8_t proto)
-{
-	ARG_UNUSED(dev);
-
-	enum keyboard_protocol_mode new_mode = usb_proto_to_keyboard_proto(proto);
-
-	if (keyboard_protocol_mode == new_mode) {
-		return;
-	}
-
-	keyboard_protocol_mode = new_mode;
-	LOG_INF("USB keyboard protocol -> %s",
-		(new_mode == KEYBOARD_PROTOCOL_MODE_BOOT) ? "boot" : "report");
-	submit_set_protocol_event(new_mode);
-	submit_transport_state_event();
-}
-
-static void keyboard_input_report_done(const struct device *dev,
-				       const uint8_t *const report)
-{
-	ARG_UNUSED(report);
-
-	keyboard_report_in_flight = false;
-	LOG_DBG("USB keyboard report sent by %s", dev->name);
-	submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_KEYS,
-				     keyboard_in_flight_sequence, false);
-}
-
-static void keyboard_output_report(const struct device *dev,
-				   const uint16_t len,
-				   const uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-
-	if ((len < KBD_LED_REPORT_SIZE) || (buf == NULL)) {
-		LOG_WRN("Invalid keyboard output report");
-		return;
-	}
-
-	submit_hid_led_event(buf[0]);
-}
-
-static const struct hid_device_ops keyboard_ops = {
-	.iface_ready = keyboard_iface_ready,
-	.get_report = keyboard_get_report,
-	.set_report = keyboard_set_report,
-	.set_idle = keyboard_set_idle,
-	.get_idle = keyboard_get_idle,
-	.set_protocol = keyboard_set_protocol,
-	.input_report_done = keyboard_input_report_done,
-	.output_report = keyboard_output_report,
-};
-
-static void consumer_iface_ready(const struct device *dev, const bool ready)
-{
-	struct usb_hid_interface_state *iface = iface_from_dev(dev);
-
-	if (!iface) {
-		return;
-	}
-
-	iface->ready = ready;
-	if (!ready) {
-		consumer_report_in_flight = false;
-	}
-
-	LOG_INF("%s interface %s", dev->name, ready ? "ready" : "not ready");
-	submit_transport_state_event();
-}
-
-static int consumer_get_report(const struct device *dev,
-			       const uint8_t type, const uint8_t id,
-			       const uint16_t len, uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(type);
-	ARG_UNUSED(id);
-	ARG_UNUSED(len);
-	ARG_UNUSED(buf);
-
-	return -ENOTSUP;
-}
-
-static int consumer_set_report(const struct device *dev,
-			       const uint8_t type, const uint8_t id,
-			       const uint16_t len, const uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(type);
-	ARG_UNUSED(id);
-	ARG_UNUSED(len);
-	ARG_UNUSED(buf);
-
-	return -ENOTSUP;
-}
-
-static void consumer_set_idle(const struct device *dev,
-			      const uint8_t id, const uint32_t duration)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(id);
-	ARG_UNUSED(duration);
-}
-
-static uint32_t consumer_get_idle(const struct device *dev, const uint8_t id)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(id);
-
-	return 0U;
-}
-
-static void consumer_set_protocol(const struct device *dev, const uint8_t proto)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(proto);
-}
-
-static void consumer_input_report_done(const struct device *dev,
-				       const uint8_t *const report)
-{
-	ARG_UNUSED(report);
-
-	consumer_report_in_flight = false;
-	LOG_DBG("USB consumer report sent by %s", dev->name);
-	submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_CONSUMER,
-				     consumer_in_flight_sequence, false);
-}
-
-static void consumer_output_report(const struct device *dev,
-				   const uint16_t len,
-				   const uint8_t *const buf)
-{
-	ARG_UNUSED(dev);
-	ARG_UNUSED(len);
-	ARG_UNUSED(buf);
-}
-
-static const struct hid_device_ops consumer_ops = {
-	.iface_ready = consumer_iface_ready,
-	.get_report = consumer_get_report,
-	.set_report = consumer_set_report,
-	.set_idle = consumer_set_idle,
-	.get_idle = consumer_get_idle,
-	.set_protocol = consumer_set_protocol,
-	.input_report_done = consumer_input_report_done,
-	.output_report = consumer_output_report,
-};
-
-static int usb_hid_register_devices(void)
-{
-	int err;
-
-	for (size_t i = 0; i < ARRAY_SIZE(hid_ifaces); i++) {
-		if (!device_is_ready(hid_ifaces[i].dev)) {
-			LOG_ERR("HID device %s not ready", hid_ifaces[i].dev->name);
-			return -ENODEV;
-		}
-	}
-
-	err = hid_device_register(hid_ifaces[USB_HID_INTERFACE_KEYBOARD].dev,
-				  keyboard_report_desc,
-				  sizeof(keyboard_report_desc),
-				  &keyboard_ops);
-	if (err) {
-		return err;
-	}
-
-	err = hid_device_register(hid_ifaces[USB_HID_INTERFACE_CONSUMER].dev,
-				  consumer_report_desc,
-				  sizeof(consumer_report_desc),
-				  &consumer_ops);
-	if (err) {
-		return err;
-	}
-
-	return 0;
-}
-
-static int module_init(void)
-{
-	reset_usb_runtime_state();
-	keyboard_protocol_mode = KEYBOARD_PROTOCOL_MODE_REPORT;
-	usb_function_prepared = false;
-
-	return 0;
-}
-
-static int module_start(void)
-{
-	if (running) {
-		return 0;
-	}
-
-	running = true;
-	submit_transport_state_event();
-	return 0;
-}
-
-static void module_pause(void)
-{
-	running = false;
-	submit_transport_state_event();
-}
-
-static bool handle_usb_prepare_event(const struct usb_prepare_event *event)
-{
-	int err;
-
-	ARG_UNUSED(event);
-
-	if (!running || usb_function_prepared) {
-		return false;
-	}
-
-	err = usb_hid_register_devices();
-	if (err) {
-		LOG_ERR("hid_device_register failed (%d)", err);
-		module_set_state(MODULE_STATE_ERROR);
-		return false;
-	}
-
-	usb_function_prepared = true;
-	submit_usb_function_ready_event();
-	return false;
-}
-
-static bool handle_usb_device_state_event(const struct usb_device_state_event *event)
-{
-	bool new_usb_active = (event->state == USB_DEVICE_STATE_ACTIVE);
-
-	if (new_usb_active == usb_active) {
-		return false;
-	}
-
-	if (!new_usb_active) {
-		reset_usb_runtime_state();
-	} else {
-		usb_active = true;
-	}
-
-	submit_transport_state_event();
-	return false;
-}
-
-static bool handle_hid_tx_report_event(const struct hid_tx_report_event *event)
-{
-	int err;
-
-	if (!running || !usb_active || (event->transport != HID_TRANSPORT_USB)) {
-		return false;
-	}
-
-	if (event->report_type == KEYBOARD_REPORT_TYPE_KEYS) {
-		if (event->protocol_mode != keyboard_protocol_mode) {
-			LOG_WRN("Drop USB keys report due to protocol mismatch");
-			return false;
-		}
-
-		if (!hid_ifaces[USB_HID_INTERFACE_KEYBOARD].ready) {
-			LOG_DBG("USB keyboard interface not ready");
-			return false;
-		}
-
-		if (keyboard_report_in_flight) {
-			LOG_WRN("Drop USB keyboard report while previous report is in flight");
-			return false;
-		}
-
-		memcpy(keyboard_tx_buf, event->dyndata.data, event->dyndata.size);
-
-		err = hid_device_submit_report(
-			hid_ifaces[USB_HID_INTERFACE_KEYBOARD].dev,
-			(uint16_t)event->dyndata.size,
-			keyboard_tx_buf);
-		if (err) {
-			LOG_WRN("USB keyboard report submit failed (%d)", err);
-			submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_KEYS,
-						     event->sequence, true);
-		} else {
-			keyboard_report_in_flight = true;
-			keyboard_in_flight_sequence = event->sequence;
-		}
-
-		return false;
-	}
-
-	if (event->report_type == KEYBOARD_REPORT_TYPE_CONSUMER) {
-		if (!hid_ifaces[USB_HID_INTERFACE_CONSUMER].ready) {
-			LOG_DBG("USB consumer interface not ready");
-			return false;
-		}
-
-		if (consumer_report_in_flight) {
-			LOG_WRN("Drop USB consumer report while previous report is in flight");
-			return false;
-		}
-
-		memcpy(consumer_tx_buf, event->dyndata.data, event->dyndata.size);
-
-		err = hid_device_submit_report(
-			hid_ifaces[USB_HID_INTERFACE_CONSUMER].dev,
-			(uint16_t)event->dyndata.size,
-			consumer_tx_buf);
-		if (err) {
-			LOG_WRN("USB consumer report submit failed (%d)", err);
-			submit_hid_report_sent_event(KEYBOARD_REPORT_TYPE_CONSUMER,
-						     event->sequence, true);
-		} else {
-			consumer_report_in_flight = true;
-			consumer_in_flight_sequence = event->sequence;
-		}
-	}
-
-	return false;
-}
-
-static bool app_event_handler(const struct app_event_header *aeh)
-{
-	if (is_hid_tx_report_event(aeh)) {
-		return handle_hid_tx_report_event(cast_hid_tx_report_event(aeh));
-	}
-
-	if (is_usb_device_state_event(aeh)) {
-		return handle_usb_device_state_event(cast_usb_device_state_event(aeh));
-	}
-
-	if (is_usb_prepare_event(aeh)) {
-		return handle_usb_prepare_event(cast_usb_prepare_event(aeh));
-	}
-
-	if (is_module_state_event(aeh)) {
-		const struct module_state_event *event = cast_module_state_event(aeh);
-
-		if (check_state(event, MODULE_ID(main), MODULE_STATE_READY)) {
-			int err;
-
-			if (!initialized) {
-				err = module_init();
-				if (err) {
-					module_set_state(MODULE_STATE_ERROR);
-					return false;
-				}
-
-				initialized = true;
-			}
-
-			err = module_start();
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	if (is_power_down_event(aeh)) {
-		if (initialized) {
-			module_pause();
-			module_set_state(MODULE_STATE_STANDBY);
-		}
-
-		return false;
-	}
-
-	if (is_wake_up_event(aeh)) {
-		if (initialized) {
-			int err = module_start();
-
-			if (err) {
-				module_set_state(MODULE_STATE_ERROR);
-			} else {
-				module_set_state(MODULE_STATE_READY);
-			}
-		}
-
-		return false;
-	}
-
-	return false;
-}
-
-APP_EVENT_LISTENER(MODULE, app_event_handler);
-APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
-APP_EVENT_SUBSCRIBE(MODULE, hid_tx_report_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_prepare_event);
-APP_EVENT_SUBSCRIBE(MODULE, usb_device_state_event);
-APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
-APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);