feat: 添加LED灯带模块支持

- 在CMakeLists.txt中添加led_strip_module.c源文件和led_strip_en_event.c事件文件
- 在设备树配置中添加SPI1接口的WS2812灯带引脚控制配置
- 在板级配置文件中添加LED灯带设备节点和别名定义
- 新增led_strip_en_event事件头文件和实现，用于控制灯带使能状态
- 配置prj.conf启用LED Strip和WS2812 SPI驱动
- 实现完整的LED灯带模块功能，包括：
  - 初始化和电源管理
  - RGB色彩效果渲染
  - 通过GPIO控制灯带供电
  - 响应应用事件进行启停控制

CMakeLists.txt

@@ -29,6 +29,7 @@ target_sources(app PRIVATE
   src/encoder_module.c
   src/hid_flowctrl_module.c
   src/keyboard_core_module.c
+  src/led_strip_module.c
   src/ui/ui_main.c
   src/cdc_wrapper_module.c
   src/protocol_module.c
@@ -45,6 +46,7 @@ target_sources(app PRIVATE
   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/events/key_function_event.c
   src/mode_switch_module.c
   src/events/keyboard_hid_report_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>
 
@@ -14,10 +15,12 @@
 		zephyr,flash = &flash0;
 		zephyr,code-partition = &slot0_partition;
 		zephyr,display = &screen_lcd;
+		zephyr,led-strip = &led_strip;
 	};
 
 	aliases {
         led0 = &myled0;
+		led-strip = &led_strip;
 		qdec0 = &qdec;
 		backlight = &backlight;
     };
@@ -206,6 +209,28 @@
 	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>;

inc/events/led_strip_en_event.h

@@ -0,0 +1,24 @@
+#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);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_LED_STRIP_EN_EVENT_H_ */

prj.conf

@@ -28,6 +28,8 @@ CONFIG_HEAP_MEM_POOL_SIZE=4096
 CONFIG_LOG=y
 CONFIG_ASSERT=y
 CONFIG_APP_EVENT_MANAGER_MAX_EVENT_CNT=64
+CONFIG_LED_STRIP=y
+CONFIG_WS2812_STRIP_SPI=y
 
 # USB HID next stack
 CONFIG_USB_DEVICE_STACK_NEXT=y

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/led_strip_module.c

@@ -0,0 +1,281 @@
+#include <errno.h>
+#include <stdbool.h>
+#include <string.h>
+
+#include <app_event_manager.h>
+
+#define MODULE led_strip_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.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_strip_en_event.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_EFFECT_INTERVAL K_MSEC(400)
+
+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");
+
+static const struct device *const strip = DEVICE_DT_GET(LED_STRIP_NODE);
+static const struct gpio_dt_spec strip_en =
+	GPIO_DT_SPEC_GET(LED_STRIP_NODE, supply_gpios);
+
+static struct led_rgb pixels[LED_STRIP_NUM_PIXELS];
+static struct k_work_delayable effect_work;
+static bool initialized;
+static bool running;
+static bool enabled = true;
+static uint8_t effect_step;
+
+static void clear_pixels(void)
+{
+	memset(pixels, 0, sizeof(pixels));
+}
+
+static void fill_pixels(uint8_t r, uint8_t g, uint8_t b)
+{
+	for (size_t i = 0; i < ARRAY_SIZE(pixels); i++) {
+		pixels[i].r = r;
+		pixels[i].g = g;
+		pixels[i].b = b;
+	}
+}
+
+static int submit_frame(void)
+{
+	int err;
+
+	err = led_strip_update_rgb(strip, pixels, ARRAY_SIZE(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(&strip_en, on ? 1 : 0);
+	if (err) {
+		LOG_WRN("LED strip EN set failed (%d)", err);
+	}
+
+	return err;
+}
+
+static void render_effect_step(void)
+{
+	switch (effect_step) {
+	case 0U:
+		fill_pixels(0x40, 0x00, 0x00);
+		break;
+
+	case 1U:
+		fill_pixels(0x00, 0x40, 0x00);
+		break;
+
+	default:
+		fill_pixels(0x00, 0x00, 0x40);
+		break;
+	}
+}
+
+static void effect_work_handler(struct k_work *work)
+{
+	ARG_UNUSED(work);
+
+	if (!running || !enabled) {
+		return;
+	}
+
+	render_effect_step();
+	(void)submit_frame();
+	effect_step = (uint8_t)((effect_step + 1U) % 3U);
+	k_work_reschedule(&effect_work, LED_STRIP_EFFECT_INTERVAL);
+}
+
+static int enable_effect_output(void)
+{
+	int err;
+
+	err = set_strip_power(true);
+	if (err) {
+		return err;
+	}
+
+	render_effect_step();
+	err = submit_frame();
+	if (err) {
+		return err;
+	}
+
+	k_work_reschedule(&effect_work, LED_STRIP_EFFECT_INTERVAL);
+	return 0;
+}
+
+static void disable_effect_output(void)
+{
+	k_work_cancel_delayable(&effect_work);
+	clear_pixels();
+	(void)submit_frame();
+	(void)set_strip_power(false);
+}
+
+static int module_init(void)
+{
+	int err;
+
+	if (!device_is_ready(strip)) {
+		LOG_ERR("LED strip device %s not ready", strip->name);
+		return -ENODEV;
+	}
+
+	if (!gpio_is_ready_dt(&strip_en)) {
+		LOG_ERR("LED strip EN GPIO not ready");
+		return -ENODEV;
+	}
+
+	err = gpio_pin_configure_dt(&strip_en, GPIO_OUTPUT_INACTIVE);
+	if (err) {
+		LOG_ERR("Failed to configure LED strip EN (%d)", err);
+		return err;
+	}
+
+	k_work_init_delayable(&effect_work, effect_work_handler);
+	clear_pixels();
+	effect_step = 0U;
+
+	LOG_INF("LED strip ready len:%u", (uint32_t)led_strip_length(strip));
+	return 0;
+}
+
+static int module_start(void)
+{
+	int err;
+
+	if (running) {
+		return 0;
+	}
+
+	running = true;
+
+	if (!enabled) {
+		return 0;
+	}
+
+	err = enable_effect_output();
+	if (err) {
+		running = false;
+	}
+
+	return err;
+}
+
+static void module_pause(void)
+{
+	if (!running) {
+		return;
+	}
+
+	disable_effect_output();
+	running = false;
+}
+
+static bool handle_led_strip_en_event(const struct led_strip_en_event *event)
+{
+	enabled = event->enabled;
+
+	if (!running) {
+		return false;
+	}
+
+	if (enabled) {
+		int err = enable_effect_output();
+
+		if (err) {
+			module_set_state(MODULE_STATE_ERROR);
+		}
+	} else {
+		disable_effect_output();
+	}
+
+	return false;
+}
+
+static bool app_event_handler(const struct app_event_header *aeh)
+{
+	if (is_led_strip_en_event(aeh)) {
+		return handle_led_strip_en_event(cast_led_strip_en_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, led_strip_en_event);
+APP_EVENT_SUBSCRIBE(MODULE, module_state_event);
+APP_EVENT_SUBSCRIBE_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);