feat(board): 添加显示屏和PWM背光支持

- 在CMakeLists.txt中添加display_test_module.c源文件
- 在设备树配置中添加SPI3和PWM0引脚控制定义
- 配置MIPI DBI显示屏驱动，支持ST7789V控制器
- 添加PWM LED背光控制功能
- 启用GPIO复位功能并添加点击检测器配置
- 实现显示测试模块，支持彩色测试图案渲染

CMakeLists.txt

@@ -17,6 +17,7 @@ target_sources(app PRIVATE
   src/ble_adv_uuid16.c
   src/ble_bas_module.c
   src/ble_hid_module.c
+  src/display_test_module.c
   src/encoder_module.c
   src/hid_flowctrl_module.c
   src/keyboard_core_module.c

boards/atguigu/mini_keyboard/mini_keyboard-pinctrl.dtsi

@@ -30,4 +30,32 @@
 			bias-pull-up;
 		};
 	};
+
+	spi3_default: spi3_default {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 1, 13)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 28)>;
+		};
+	};
+
+	spi3_sleep: spi3_sleep {
+		group1 {
+			psels = <NRF_PSEL(SPIM_SCK, 1, 13)>,
+				<NRF_PSEL(SPIM_MOSI, 0, 28)>;
+			low-power-enable;
+		};
+	};
+
+	pwm0_default: pwm0_default {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 1, 11)>;
+		};
+	};
+
+	pwm0_sleep: pwm0_sleep {
+		group1 {
+			psels = <NRF_PSEL(PWM_OUT0, 1, 11)>;
+			low-power-enable;
+		};
+	};
 };

boards/atguigu/mini_keyboard/mini_keyboard.dts

@@ -2,6 +2,8 @@
 #include <nordic/nrf52840_qiaa.dtsi>
 #include "mini_keyboard-pinctrl.dtsi"
 #include <zephyr/dt-bindings/adc/adc.h>
+#include <zephyr/dt-bindings/mipi_dbi/mipi_dbi.h>
+#include <zephyr/dt-bindings/pwm/pwm.h>
 
 / {
 	model = "Mini keyboard";
@@ -11,11 +13,13 @@
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash0;
 		zephyr,code-partition = &slot0_partition;
+		zephyr,display = &screen_lcd;
 	};
 
 	aliases {
         led0 = &myled0;
 		qdec0 = &qdec;
+		backlight = &backlight;
     };
 
 	hid_kbd: hid_kbd {
@@ -43,6 +47,51 @@
 		};
 	};
 
+	pwm_leds {
+		compatible = "pwm-leds";
+		status = "okay";
+
+		backlight: pwm_led_0 {
+			pwms = <&pwm0 0 PWM_MSEC(10) PWM_POLARITY_INVERTED>;
+		};
+	};
+
+	mipi_dbi_screen: mipi_dbi_screen {
+		compatible = "zephyr,mipi-dbi-spi";
+		spi-dev = <&spi3>;
+		dc-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
+		write-only;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		screen_lcd: st7789v@0 {
+			compatible = "sitronix,st7789v";
+			status = "okay";
+			reg = <0>;
+			mipi-max-frequency = <32000000>;
+			width = <320>;
+			height = <172>;
+			x-offset = <0>;
+			y-offset = <34>;
+			vcom = <0x34>;
+			gctrl = <0x00>;
+			mdac = <0x70>;
+			gamma = <0x01>;
+			colmod = <0x05>;
+			lcm = <0x2c>;
+			porch-param = [ 0c 0c 00 33 33  ];
+			cmd2en-param = [ 5a 69 02 01  ];
+			pwctrl1-param = [ a4 a1  ];
+			pvgam-param = [ f0 04 08 0a 0a 05 25 33 3c 24 0e 0f 27 2f ];
+			nvgam-param = [ f0 02 06 06 04 22 25 32 3b 3a 15 17 2d 37 ];
+			ram-param = [ 00 f0  ];
+			rgb-param = [ cd 08 14  ];
+			ready-time-ms = <120>;
+			mipi-mode = "MIPI_DBI_MODE_SPI_4WIRE";
+		};
+	};
+
 	vbatt: vbatt {
 		compatible = "voltage-divider";
 		io-channels = <&adc 7>;
@@ -90,6 +139,7 @@
 
 &uicr {
 	nfct-pins-as-gpios;
+	gpio-as-nreset;
 };
 
 &adc {
@@ -148,6 +198,21 @@
 	status = "okay";
 };
 
+&spi3 {
+	status = "okay";
+	pinctrl-0 = <&spi3_default>;
+	pinctrl-1 = <&spi3_sleep>;
+	pinctrl-names = "default", "sleep";
+	cs-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+};
+
+&pwm0 {
+	status = "okay";
+	pinctrl-0 = <&pwm0_default>;
+	pinctrl-1 = <&pwm0_sleep>;
+	pinctrl-names = "default", "sleep";
+};
+
 &qdec {
 	status = "okay";
 	pinctrl-0 = <&encoder_default>;

inc/click_detector_def.h

@@ -0,0 +1,15 @@
+/*
+ * This configuration file is included only once from the CAF click detector
+ * module and defines the keys that should produce click events.
+ */
+
+#include <caf/click_detector.h>
+
+const struct {} click_detector_def_include_once;
+
+static const struct click_detector_config click_detector_config[] = {
+	{
+		.key_id = 0x180,
+		.consume_button_event = true,
+	},
+};

prj.conf

@@ -1,8 +1,13 @@
 CONFIG_CAF=y
 CONFIG_CAF_BUTTONS=y
 CONFIG_CAF_BUTTONS_DEF_PATH="buttons_def.h"
+CONFIG_CAF_CLICK_DETECTOR=y
+CONFIG_CAF_CLICK_DETECTOR_DEF_PATH="click_detector_def.h"
 CONFIG_GPIO=y
 CONFIG_I2C=y
+CONFIG_LED=y
+CONFIG_PWM=y
+CONFIG_SPI=y
 CONFIG_NRFX_RTC2=y
 CONFIG_NRFX_GPPI=y
 CONFIG_NRFX_QDEC=y
@@ -10,6 +15,9 @@ CONFIG_PINCTRL_DYNAMIC=y
 CONFIG_REBOOT=y
 CONFIG_SENSOR=y
 CONFIG_ADC=y
+CONFIG_DISPLAY=y
+CONFIG_DISPLAY_LOG_LEVEL_DBG=y
+CONFIG_MIPI_DBI_LOG_LEVEL_DBG=y
 CONFIG_SETTINGS=y
 CONFIG_SETTINGS_NVS=y
 CONFIG_FLASH=y
@@ -78,6 +86,10 @@ CONFIG_CAF_BLE_ADV_FAST_ADV=y
 CONFIG_CAF_BLE_ADV_FILTER_ACCEPT_LIST=y
 CONFIG_CAF_BLE_ADV_MODULE_SUSPEND_EVENTS=y
 CONFIG_CAF_BLE_BOND=y
+CONFIG_CAF_BLE_BOND_PEER_ERASE_CLICK=y
+CONFIG_CAF_BLE_BOND_PEER_ERASE_CLICK_KEY_ID=0x180
+CONFIG_CAF_BLE_BOND_PEER_ERASE_CLICK_LONG=y
+CONFIG_CAF_BLE_BOND_PEER_ERASE_CLICK_TIMEOUT=-1
 CONFIG_CAF_MODULE_SUSPEND_EVENTS=y
 CONFIG_BT_ADV_PROV_FLAGS=y
 CONFIG_BT_ADV_PROV_GAP_APPEARANCE=y

src/display_test_module.c

@@ -0,0 +1,230 @@
+#include <stdbool.h>
+#include <stdint.h>
+
+#include <app_event_manager.h>
+
+#define MODULE display_test_module
+#include <caf/events/module_state_event.h>
+#include <caf/events/power_event.h>
+
+#include <zephyr/device.h>
+#include <zephyr/drivers/display.h>
+#include <zephyr/drivers/led.h>
+#include <zephyr/logging/log.h>
+#include <zephyr/sys/util.h>
+
+LOG_MODULE_REGISTER(MODULE, LOG_LEVEL_INF);
+
+#define DISPLAY_TEST_LINE_PIXELS 320U
+#define COLOR_RED 0xF800U
+#define COLOR_GREEN 0x07E0U
+#define COLOR_BLUE 0x001FU
+#define COLOR_YELLOW 0xFFE0U
+
+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 =
+	DEVICE_DT_GET(DT_CHOSEN(zephyr_display));
+static const struct device *const backlight_dev =
+	DEVICE_DT_GET(DT_PARENT(DT_ALIAS(backlight)));
+static const uint32_t backlight_idx = DT_NODE_CHILD_IDX(DT_ALIAS(backlight));
+static uint16_t line_buf[DISPLAY_TEST_LINE_PIXELS];
+static bool initialized;
+static bool running;
+
+static void fill_test_line(size_t width)
+{
+	const uint16_t colors[] = {
+		COLOR_RED,
+		COLOR_GREEN,
+		COLOR_BLUE,
+		COLOR_YELLOW,
+	};
+	size_t segment = MAX(width / ARRAY_SIZE(colors), 1U);
+
+	for (size_t x = 0; x < width; x++) {
+		size_t color_idx = MIN(x / segment, ARRAY_SIZE(colors) - 1U);
+
+		line_buf[x] = colors[color_idx];
+	}
+}
+
+static int draw_test_pattern(void)
+{
+	struct display_capabilities caps;
+	struct display_buffer_descriptor desc;
+	int err;
+
+	display_get_capabilities(display_dev, &caps);
+	LOG_INF("Display caps: %ux%u fmt:%u orient:%u info:0x%x",
+		caps.x_resolution, caps.y_resolution,
+		caps.current_pixel_format, caps.current_orientation,
+		caps.screen_info);
+
+	if (caps.x_resolution > ARRAY_SIZE(line_buf)) {
+		LOG_ERR("Display width %u exceeds line buffer", caps.x_resolution);
+		return -ENOMEM;
+	}
+
+	if (caps.current_pixel_format != PIXEL_FORMAT_RGB_565) {
+		LOG_WRN("Unexpected pixel format %u", caps.current_pixel_format);
+	}
+
+	fill_test_line(caps.x_resolution);
+
+	desc.width = caps.x_resolution;
+	desc.height = 1U;
+	desc.pitch = caps.x_resolution;
+	desc.buf_size = caps.x_resolution * sizeof(line_buf[0]);
+
+	for (uint16_t y = 0; y < caps.y_resolution; y++) {
+		err = display_write(display_dev, 0U, y, &desc, line_buf);
+		if (err) {
+			LOG_ERR("display_write failed at line %u (%d)", y, err);
+			return err;
+		}
+	}
+
+	err = display_blanking_off(display_dev);
+	if (err) {
+		LOG_ERR("display_blanking_off failed (%d)", err);
+		return err;
+	}
+
+	LOG_INF("Display test pattern rendered (%ux%u)",
+		caps.x_resolution, caps.y_resolution);
+
+	return 0;
+}
+
+static int module_init(void)
+{
+	int err;
+
+	LOG_INF("Display test init on %s", display_dev->name);
+
+	if (!device_is_ready(display_dev)) {
+		LOG_ERR("Display device %s not ready", display_dev->name);
+		return -ENODEV;
+	}
+
+	if (!device_is_ready(backlight_dev)) {
+		LOG_ERR("Backlight device %s not ready", backlight_dev->name);
+		return -ENODEV;
+	}
+
+	err = led_off(backlight_dev, backlight_idx);
+	if (err) {
+		LOG_ERR("Backlight off failed (%d)", err);
+		return err;
+	}
+
+	LOG_INF("Backlight device %s channel %u ready",
+		backlight_dev->name, backlight_idx);
+
+	return 0;
+}
+
+static int module_start(void)
+{
+	int err;
+
+	if (running) {
+		return 0;
+	}
+
+	LOG_INF("Display test start");
+
+	err = led_on(backlight_dev, backlight_idx);
+	if (err) {
+		LOG_ERR("Backlight enable failed (%d)", err);
+		return err;
+	}
+
+	LOG_INF("Backlight enabled");
+	k_sleep(K_MSEC(50));
+
+	err = draw_test_pattern();
+	if (err) {
+		(void)led_off(backlight_dev, backlight_idx);
+		return err;
+	}
+
+	running = true;
+
+	return 0;
+}
+
+static void module_pause(void)
+{
+	if (!running) {
+		return;
+	}
+
+	LOG_INF("Display test pause");
+	(void)display_blanking_on(display_dev);
+	(void)led_off(backlight_dev, backlight_idx);
+	running = false;
+}
+
+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)) {
+			LOG_INF("main READY received");
+			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_EARLY(MODULE, power_down_event);
+APP_EVENT_SUBSCRIBE(MODULE, wake_up_event);