feat(display): 集成LVGL图形库并重构显示模块

- 将display_test_module重命名为display_module
- 集成LVGL配置到prj.conf中，包括颜色深度、双缓冲等设置
- 添加UI主界面实现(ui_main.c)，包含标题和副标题显示
- 实现背光控制功能替代原有的测试图案绘制
- 调整LCD配置参数(mdac从0x70改为0xA0)
- 修改日志级别从DEBUG降至ERROR以优化性能
- 在CMakeLists.txt中添加UI模块源文件引用

CMakeLists.txt

@@ -17,10 +17,11 @@ 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/display_module.c
   src/encoder_module.c
   src/hid_flowctrl_module.c
   src/keyboard_core_module.c
+  src/ui/ui_main.c
   src/usb_hid_module.c
   src/events/bat_state_event.c
   src/events/encoder_event.c

boards/atguigu/mini_keyboard/mini_keyboard.dts

@@ -76,7 +76,7 @@
 			y-offset = <34>;
 			vcom = <0x34>;
 			gctrl = <0x00>;
-			mdac = <0x70>;
+			mdac = <0xA0>;
 			gamma = <0x01>;
 			colmod = <0x05>;
 			lcm = <0x2c>;

prj.conf

@@ -16,8 +16,8 @@ CONFIG_REBOOT=y
 CONFIG_SENSOR=y
 CONFIG_ADC=y
 CONFIG_DISPLAY=y
-CONFIG_DISPLAY_LOG_LEVEL_DBG=y
+CONFIG_DISPLAY_LOG_LEVEL_ERR=y
-CONFIG_MIPI_DBI_LOG_LEVEL_DBG=y
+CONFIG_MIPI_DBI_LOG_LEVEL_ERR=y
 CONFIG_SETTINGS=y
 CONFIG_SETTINGS_NVS=y
 CONFIG_FLASH=y
@@ -95,3 +95,18 @@ CONFIG_BT_ADV_PROV_FLAGS=y
 CONFIG_BT_ADV_PROV_GAP_APPEARANCE=y
 CONFIG_BT_ADV_PROV_DEVICE_NAME=y
 CONFIG_BT_ADV_PROV_DEVICE_NAME_SD=y
+
+# LVGL
+CONFIG_LVGL=y
+CONFIG_LV_Z_AUTO_INIT=n
+CONFIG_LV_Z_RUN_LVGL_ON_WORKQUEUE=y
+CONFIG_LV_Z_LVGL_MUTEX=y
+CONFIG_LV_COLOR_DEPTH_16=y
+CONFIG_LV_COLOR_16_SWAP=y
+CONFIG_LV_Z_BITS_PER_PIXEL=16
+CONFIG_LV_Z_VDB_SIZE=25
+CONFIG_LV_Z_DOUBLE_VDB=y
+CONFIG_LV_Z_MEM_POOL_SIZE=16384
+CONFIG_LV_USE_LABEL=y
+CONFIG_LV_FONT_MONTSERRAT_14=y
+CONFIG_MAIN_STACK_SIZE=4096

src/display_module.c

@@ -1,26 +1,22 @@
+#include <errno.h>
 #include <stdbool.h>
-#include <stdint.h>
 
 #include <app_event_manager.h>
 
-#define MODULE display_test_module
+#define MODULE display_module
 #include <caf/events/module_state_event.h>
 #include <caf/events/power_event.h>
 
+#include <lvgl_zephyr.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>
+
+#include "ui/ui_main.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");
@@ -30,80 +26,24 @@ static const struct device *const display_dev =
 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 bool lvgl_initialized;
 
-static void fill_test_line(size_t width)
+static int backlight_set(bool on)
 {
-	const uint16_t colors[] = {
+	if (on) {
-		COLOR_RED,
+		return led_on(backlight_dev, backlight_idx);
-		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) {
+	return led_off(backlight_dev, backlight_idx);
-		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);
+	LOG_INF("Display init on %s", display_dev->name);
 
 	if (!device_is_ready(display_dev)) {
 		LOG_ERR("Display device %s not ready", display_dev->name);
@@ -115,15 +55,12 @@ static int module_init(void)
 		return -ENODEV;
 	}
 
-	err = led_off(backlight_dev, backlight_idx);
+	err = backlight_set(false);
 	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;
 }
 
@@ -135,24 +72,35 @@ static int module_start(void)
 		return 0;
 	}
 
-	LOG_INF("Display test start");
+	if (!lvgl_initialized) {
+		err = lvgl_init();
+		if (err) {
+			LOG_ERR("lvgl_init failed (%d)", err);
+			return err;
+		}
 
-	err = led_on(backlight_dev, backlight_idx);
+		lvgl_initialized = true;
+
+		lvgl_lock();
+		ui_main_init();
+		lvgl_unlock();
+	}
+
+	err = backlight_set(true);
 	if (err) {
 		LOG_ERR("Backlight enable failed (%d)", err);
 		return err;
 	}
 
-	LOG_INF("Backlight enabled");
+	err = display_blanking_off(display_dev);
-	k_sleep(K_MSEC(50));
-
-	err = draw_test_pattern();
 	if (err) {
-		(void)led_off(backlight_dev, backlight_idx);
+		LOG_ERR("display_blanking_off failed (%d)", err);
+		(void)backlight_set(false);
 		return err;
 	}
 
 	running = true;
+	LOG_INF("LVGL display started");
 
 	return 0;
 }
@@ -163,10 +111,10 @@ static void module_pause(void)
 		return;
 	}
 
-	LOG_INF("Display test pause");
 	(void)display_blanking_on(display_dev);
-	(void)led_off(backlight_dev, backlight_idx);
+	(void)backlight_set(false);
 	running = false;
+	LOG_INF("LVGL display paused");
 }
 
 static bool app_event_handler(const struct app_event_header *aeh)
@@ -176,7 +124,6 @@ static bool app_event_handler(const struct app_event_header *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) {

src/ui/ui_main.c

@@ -0,0 +1,34 @@
+#include <stdbool.h>
+
+#include <lvgl.h>
+
+#include "ui_main.h"
+
+static bool ui_initialized;
+
+void ui_main_init(void)
+{
+	lv_obj_t *screen;
+	lv_obj_t *title;
+	lv_obj_t *subtitle;
+
+	if (ui_initialized) {
+		return;
+	}
+
+	screen = lv_screen_active();
+	lv_obj_set_style_bg_color(screen, lv_color_hex(0x101418), 0);
+	lv_obj_set_style_text_color(screen, lv_color_hex(0xF5F7FA), 0);
+
+	title = lv_label_create(screen);
+	lv_label_set_text(title, "Hello World");
+	lv_obj_set_style_text_font(title, &lv_font_montserrat_14, 0);
+	lv_obj_align(title, LV_ALIGN_CENTER, 0, -10);
+
+	subtitle = lv_label_create(screen);
+	lv_label_set_text(subtitle, "WH Mini Keyboard");
+	lv_obj_set_style_text_opa(subtitle, LV_OPA_70, 0);
+	lv_obj_align(subtitle, LV_ALIGN_CENTER, 0, 14);
+
+	ui_initialized = true;
+}

src/ui/ui_main.h

@@ -0,0 +1,14 @@
+#ifndef BLINKY_UI_MAIN_H_
+#define BLINKY_UI_MAIN_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void ui_main_init(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* BLINKY_UI_MAIN_H_ */