393 lines
12 KiB
C
393 lines
12 KiB
C
/**
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* @file FluxDisplayPort.c
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* @brief LCD及触摸屏控制函数实现
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*
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* 用于实现LCD控制IO及初始化函数
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*
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* @author wang xiang en
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* @date 2025-04-18
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* @version 版本号
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* @copyright 版权声明（(C)2025, YUWELL MEDTECH Co.ltd）
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*/
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#include "FluxDisplayPort.h"
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/* 用于初始化配置的全局变量 */
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static esp_lcd_touch_handle_t tp = NULL;
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static SemaphoreHandle_t lvgl_mux = NULL;
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static const char *TAG = "LCD_Init";
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/* 用于初始化配置的全局变量 */
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static lv_disp_draw_buf_t disp_buf; // Contains internal graphic buffer(s) called draw buffer(s)
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static lv_disp_drv_t disp_drv; // Contains callback functions
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/**
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* @brief 通知LVGL库，屏幕已经更新
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*
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* 屏幕刷新时，LVGL库不会自动通知屏幕已经更新，需要手动调用此函数通知LVGL库，屏幕已经更新。
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*
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* @param[in] panel_io lcd控制面板
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* @param[in] edata 事件码
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* @param[in] user_ctx 用户数据
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*
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* @return 成功返回0，失败返回错误码
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*/
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static bool example_notify_lvgl_flush_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
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{
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lv_disp_drv_t *disp_driver = (lv_disp_drv_t *)user_ctx;
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lv_disp_flush_ready(disp_driver);
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return false;
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}
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/**
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* @brief 刷新屏幕
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*
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* 使用lcd驱动进行屏幕内容刷新
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*
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* @param[in] drv lcd控制驱动
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* @param[in] area 绘图区域
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* @param[in] color_map 色谱
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*
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*/
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static void example_lvgl_flush_cb(lv_disp_drv_t *drv, const lv_area_t *area, lv_color_t *color_map)
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{
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esp_lcd_panel_handle_t panel_handle = (esp_lcd_panel_handle_t) drv->user_data;
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int offsetx1 = area->x1;
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int offsetx2 = area->x2;
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int offsety1 = area->y1;
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int offsety2 = area->y2;
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// Copy a buffer's content to a specific area of the display
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esp_lcd_panel_draw_bitmap(panel_handle, offsetx1, offsety1, offsetx2 + 1, offsety2 + 1, color_map);
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}
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/**
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* @brief 触摸屏控制块
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*
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* 通知LCD内核触摸屏的点击事件
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*
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* @param[in] drv 控制驱动
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* @param[out] data 点击区域
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*
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*/
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static void example_lvgl_touch_cb(lv_indev_drv_t *drv, lv_indev_data_t *data)
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{
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uint16_t touchpad_x[1] = {0};
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uint16_t touchpad_y[1] = {0};
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uint8_t touchpad_cnt = 0;
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/* Read touch controller data */
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esp_lcd_touch_read_data(drv->user_data);
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/* Get coordinates */
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bool touchpad_pressed = esp_lcd_touch_get_coordinates(drv->user_data, touchpad_x, touchpad_y, NULL, &touchpad_cnt, 1);
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if (touchpad_pressed && touchpad_cnt > 0)
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{
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data->point.x = touchpad_x[0];
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data->point.y = touchpad_y[0];
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data->state = LV_INDEV_STATE_PRESSED;
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}
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else
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{
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data->state = LV_INDEV_STATE_RELEASED;
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}
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}
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/**
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* @brief lvgl时钟加一
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*
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* 时钟计数增加，驱动lvgl时钟
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*
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* @param[in] arg not used
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*
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*/
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static void example_increase_lvgl_tick(void *arg)
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{
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/* Tell LVGL how many milliseconds have elapsed */
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lv_tick_inc(EXAMPLE_LVGL_TICK_PERIOD_MS);
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}
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/**
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* @brief lvgl锁
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*
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* 加锁以保护临界资源
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*
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* @param[in] timeout_ms 锁住LVGL锁时间
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* @return true lvgl锁成功
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*/
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bool example_lvgl_lock(int timeout_ms)
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{
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// Convert timeout in milliseconds to FreeRTOS ticks
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// If `timeout_ms` is set to -1, the program will block until the condition is met
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const TickType_t timeout_ticks = (timeout_ms == -1) ? portMAX_DELAY : pdMS_TO_TICKS(timeout_ms);
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return xSemaphoreTakeRecursive(lvgl_mux, timeout_ticks) == pdTRUE;
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}
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/**
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* @brief lvgl解锁
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*
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* 解锁更新界面内容
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*/
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void example_lvgl_unlock(void)
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{
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xSemaphoreGiveRecursive(lvgl_mux);
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}
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/**
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* @brief lvgl主任务
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*
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* 启动后开始进行lvgl线程运行
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*
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* @param[in] arg not used
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*/
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static void example_lvgl_port_task(void *arg)
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{
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ESP_LOGI(TAG, "Starting LVGL task");
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uint32_t task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
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while (1) {
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// Lock the mutex due to the LVGL APIs are not thread-safe
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if (example_lvgl_lock(-1)) {
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task_delay_ms = lv_timer_handler();
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// Release the mutex
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example_lvgl_unlock();
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}
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if (task_delay_ms > EXAMPLE_LVGL_TASK_MAX_DELAY_MS) {
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task_delay_ms = EXAMPLE_LVGL_TASK_MAX_DELAY_MS;
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} else if (task_delay_ms < EXAMPLE_LVGL_TASK_MIN_DELAY_MS) {
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task_delay_ms = EXAMPLE_LVGL_TASK_MIN_DELAY_MS;
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}
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vTaskDelay(pdMS_TO_TICKS(task_delay_ms));
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}
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}
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/**
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* @brief i80总线初始化
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*
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* 根据IO Num初始化总线
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*
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* @param[in] io_handle 控制句柄
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* @param[in] user_ctx 用户数据
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*/
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static void example_init_i80_bus(esp_lcd_panel_io_handle_t *io_handle, void *user_ctx)
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{
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ESP_LOGI(TAG, "Initialize Intel 8080 bus");
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/* 创建i80总线控制句柄 */
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esp_lcd_i80_bus_handle_t i80_bus = NULL;
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esp_lcd_i80_bus_config_t bus_config = {
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.clk_src = LCD_CLK_SRC_DEFAULT,
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.dc_gpio_num = EXAMPLE_PIN_NUM_DC,
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.wr_gpio_num = EXAMPLE_PIN_NUM_PCLK,
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.data_gpio_nums = {
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EXAMPLE_PIN_NUM_DATA0,
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EXAMPLE_PIN_NUM_DATA1,
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EXAMPLE_PIN_NUM_DATA2,
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EXAMPLE_PIN_NUM_DATA3,
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EXAMPLE_PIN_NUM_DATA4,
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EXAMPLE_PIN_NUM_DATA5,
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EXAMPLE_PIN_NUM_DATA6,
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EXAMPLE_PIN_NUM_DATA7,
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},
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.bus_width = CONFIG_EXAMPLE_LCD_I80_BUS_WIDTH,
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.max_transfer_bytes = EXAMPLE_LCD_H_RES * 100 * sizeof(uint16_t),
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.dma_burst_size = EXAMPLE_DMA_BURST_SIZE,
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};
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/* 根据配置创建 i80总线控制句柄 */
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ESP_ERROR_CHECK(esp_lcd_new_i80_bus(&bus_config, &i80_bus));
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/* 配置i80总线IO引脚 */
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esp_lcd_panel_io_i80_config_t io_config = {
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.cs_gpio_num = EXAMPLE_PIN_NUM_CS,
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.pclk_hz = EXAMPLE_LCD_PIXEL_CLOCK_HZ,
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.trans_queue_depth = 10,
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.dc_levels = {
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.dc_idle_level = 0,
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.dc_cmd_level = 0,
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.dc_dummy_level = 0,
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.dc_data_level = 1,
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},
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.flags = {
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.swap_color_bytes = !LV_COLOR_16_SWAP, // Swap can be done in LvGL (default) or DMA
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},
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.on_color_trans_done = example_notify_lvgl_flush_ready,
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.user_ctx = user_ctx,
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.lcd_cmd_bits = EXAMPLE_LCD_CMD_BITS,
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.lcd_param_bits = EXAMPLE_LCD_PARAM_BITS,
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};
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i80(i80_bus, &io_config, io_handle));
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}
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/**
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* @brief LCD控制句柄
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*
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* 添加LCD控制句柄
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*
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* @param[in] io_handle io句柄
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* @param[out] panel lcd句柄
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*/
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static void example_init_lcd_panel(esp_lcd_panel_io_handle_t io_handle, esp_lcd_panel_handle_t *panel)
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{
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esp_lcd_panel_handle_t panel_handle = NULL;
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ESP_LOGI(TAG, "Install LCD driver of st7789");
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esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = EXAMPLE_PIN_NUM_RST,
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.rgb_ele_order = COLOR_RGB_ELEMENT_ORDER_BGR,
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.bits_per_pixel = 16,
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};
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ESP_ERROR_CHECK(esp_lcd_new_panel_st7789(io_handle, &panel_config, &panel_handle));
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esp_lcd_panel_reset(panel_handle);
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esp_lcd_panel_init(panel_handle);
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// Set inversion, x/y coordinate order, x/y mirror according to your LCD module spec
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// The gap is LCD panel specific, even panels with the same driver IC, can have different gap value
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esp_lcd_panel_invert_color(panel_handle, false);
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esp_lcd_panel_set_gap(panel_handle, 0, 0);
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esp_lcd_panel_mirror(panel_handle, true, false);
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*panel = panel_handle;
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}
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/**
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* @brief 触摸屏驱动初始化
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*
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*/
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static void example_init_touch_panel(void)
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{
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esp_lcd_panel_io_handle_t tp_io_handle = NULL;
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ESP_LOGI(TAG, "Initialize I2C");
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const i2c_config_t i2c_conf = {
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.mode = I2C_MODE_MASTER,
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.sda_io_num = EXAMPLE_I2C_SDA,
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.scl_io_num = EXAMPLE_I2C_SCL,
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.sda_pullup_en = GPIO_PULLUP_ENABLE,
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.scl_pullup_en = GPIO_PULLUP_ENABLE,
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.master.clk_speed = 400000,
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};
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/* Initialize I2C */
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ESP_ERROR_CHECK(i2c_param_config(EXAMPLE_I2C_NUM, &i2c_conf));
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ESP_ERROR_CHECK(i2c_driver_install(EXAMPLE_I2C_NUM, i2c_conf.mode, 0, 0, 0));
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esp_lcd_panel_io_i2c_config_t tp_io_config = ESP_LCD_TOUCH_IO_I2C_FT5x06_CONFIG();
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ESP_LOGI(TAG, "Initialize touch IO (I2C)");
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/* Touch IO handle */
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ESP_ERROR_CHECK(esp_lcd_new_panel_io_i2c((esp_lcd_i2c_bus_handle_t)EXAMPLE_I2C_NUM, &tp_io_config, &tp_io_handle));
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esp_lcd_touch_config_t tp_cfg = {
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.x_max = EXAMPLE_LCD_V_RES,
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.y_max = EXAMPLE_LCD_H_RES,
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.rst_gpio_num = -1,
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.int_gpio_num = -1,
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.flags = {
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.swap_xy = 0,
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.mirror_x = 0,
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.mirror_y = 0,
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},
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};
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ESP_LOGI(TAG, "Initialize touch controller FT5X06");
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ESP_ERROR_CHECK(esp_lcd_touch_new_i2c_ft5x06(tp_io_handle, &tp_cfg, &tp));
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}
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/**
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* @brief 最后总的触摸屏及LCD初始化函数
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*
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*/
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void initialize_display_and_touch(void)
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{
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/* 确定背光是否可用 */
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#if EXAMPLE_PIN_NUM_BK_LIGHT >= 0
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ESP_LOGI(TAG, "Turn off LCD backlight");
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gpio_config_t bk_gpio_config = {
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.mode = GPIO_MODE_OUTPUT,
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.pin_bit_mask = 1ULL << EXAMPLE_PIN_NUM_BK_LIGHT
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};
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ESP_ERROR_CHECK(gpio_config(&bk_gpio_config));
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/* 关闭LCD背光 */
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gpio_set_level(EXAMPLE_PIN_NUM_BK_LIGHT, EXAMPLE_LCD_BK_LIGHT_OFF_LEVEL);
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#endif // EXAMPLE_PIN_NUM_BK_LIGHT >= 0
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/* 初始化i80总线 */
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esp_lcd_panel_io_handle_t io_handle = NULL;
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example_init_i80_bus(&io_handle, &disp_drv);
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/* 初始化LCD控制panel */
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esp_lcd_panel_handle_t panel_handle = NULL;
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example_init_lcd_panel(io_handle, &panel_handle);
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// Stub: User can flush pre-defined pattern to the screen before we turn on the screen or backlight
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/* Since everything is initialized, let's display some content */
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ESP_ERROR_CHECK(esp_lcd_panel_disp_on_off(panel_handle, true));
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/* Turn on the backlight! */
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#if EXAMPLE_PIN_NUM_BK_LIGHT >= 0
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ESP_LOGI(TAG, "Turn on LCD backlight");
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//等待所有初始完毕后再开灯
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//gpio_set_level(EXAMPLE_PIN_NUM_BK_LIGHT, EXAMPLE_LCD_BK_LIGHT_ON_LEVEL);
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#endif // EXAMPLE_PIN_NUM_BK_LIGHT >= 0
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/* 初始化触摸屏 */
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example_init_touch_panel();
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ESP_LOGI(TAG, "Initialize LVGL library");
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lv_init();
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// Allocate draw buffers used by LVGL
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// It's recommended to choose the size of the draw buffer(s) to be at least 1/10 screen sized
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uint32_t draw_buf_alloc_caps = 0;
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#if CONFIG_EXAMPLE_LCD_I80_COLOR_IN_PSRAM
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draw_buf_alloc_caps |= MALLOC_CAP_SPIRAM;
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#endif
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lv_color_t *buf1 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
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lv_color_t *buf2 = esp_lcd_i80_alloc_draw_buffer(io_handle, EXAMPLE_LCD_H_RES * 100 * sizeof(lv_color_t), draw_buf_alloc_caps);
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assert(buf1);
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assert(buf2);
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ESP_LOGI(TAG, "buf1@%p, buf2@%p", buf1, buf2);
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// Initialize LVGL draw buffers
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lv_disp_draw_buf_init(&disp_buf, buf1, buf2, EXAMPLE_LCD_H_RES * 100);
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ESP_LOGI(TAG, "Register display driver to LVGL");
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lv_disp_drv_init(&disp_drv);
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disp_drv.hor_res = EXAMPLE_LCD_H_RES;
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disp_drv.ver_res = EXAMPLE_LCD_V_RES;
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disp_drv.flush_cb = example_lvgl_flush_cb;
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disp_drv.draw_buf = &disp_buf;
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disp_drv.user_data = panel_handle;
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lv_disp_t *disp = lv_disp_drv_register(&disp_drv);
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ESP_LOGI(TAG, "Install LVGL tick timer");
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// Tick interface for LVGL (using esp_timer to generate 2ms periodic event)
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const esp_timer_create_args_t lvgl_tick_timer_args = {
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.callback = &example_increase_lvgl_tick,
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.name = "lvgl_tick"
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};
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esp_timer_handle_t lvgl_tick_timer = NULL;
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ESP_ERROR_CHECK(esp_timer_create(&lvgl_tick_timer_args, &lvgl_tick_timer));
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ESP_ERROR_CHECK(esp_timer_start_periodic(lvgl_tick_timer, EXAMPLE_LVGL_TICK_PERIOD_MS * 1000));
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/* Install touch screen driver */
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static lv_indev_drv_t indev_drv; // Input device driver (Touch)
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lv_indev_drv_init(&indev_drv);
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indev_drv.type = LV_INDEV_TYPE_POINTER;
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indev_drv.disp = disp;
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indev_drv.read_cb = example_lvgl_touch_cb;
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indev_drv.user_data = tp;
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lv_indev_drv_register(&indev_drv);
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lvgl_mux = xSemaphoreCreateRecursiveMutex();
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assert(lvgl_mux);
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ESP_LOGI(TAG, "Create LVGL task");
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xTaskCreate(example_lvgl_port_task, "LVGL", EXAMPLE_LVGL_TASK_STACK_SIZE, NULL, EXAMPLE_LVGL_TASK_PRIORITY, NULL);
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ESP_LOGI(TAG, "Display LVGL animation");
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}
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