101 lines
5.0 KiB
C
101 lines
5.0 KiB
C
#include "LVGL_Driver.h"
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static const char *TAG_LVGL = "WS_LVGL";
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static lv_color_t buf1[ LVGL_BUF_LEN ];
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static lv_color_t buf2[ LVGL_BUF_LEN];
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// static lv_color_t* buf1 = (lv_color_t*) heap_caps_malloc(LVGL_BUF_LEN , MALLOC_CAP_SPIRAM);
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// static lv_color_t* buf2 = (lv_color_t*) heap_caps_malloc(LVGL_BUF_LEN , MALLOC_CAP_SPIRAM);
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lv_disp_draw_buf_t disp_buf; // contains internal graphic buffer(s) called draw buffer(s)
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lv_disp_drv_t disp_drv; // contains callback functions
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void example_increase_lvgl_tick(void *arg)
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{
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/* Tell LVGL how many milliseconds has elapsed */
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lv_tick_inc(EXAMPLE_LVGL_TICK_PERIOD_MS);
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}
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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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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 + Offset_X, offsety1 + Offset_Y, offsetx2 + Offset_X + 1, offsety2 + Offset_Y + 1, color_map);
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}
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/* Rotate display and touch, when rotated screen in LVGL. Called when driver parameters are updated. */
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void example_lvgl_port_update_callback(lv_disp_drv_t *drv)
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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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switch (drv->rotated) {
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case LV_DISP_ROT_NONE:
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// Rotate LCD display
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esp_lcd_panel_swap_xy(panel_handle, false);
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esp_lcd_panel_mirror(panel_handle, true, false);
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break;
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case LV_DISP_ROT_90:
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// Rotate LCD display
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esp_lcd_panel_swap_xy(panel_handle, true);
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esp_lcd_panel_mirror(panel_handle, true, true);
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break;
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case LV_DISP_ROT_180:
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// Rotate LCD display
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esp_lcd_panel_swap_xy(panel_handle, false);
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esp_lcd_panel_mirror(panel_handle, false, true);
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break;
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case LV_DISP_ROT_270:
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// Rotate LCD display
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esp_lcd_panel_swap_xy(panel_handle, true);
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esp_lcd_panel_mirror(panel_handle, false, false);
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break;
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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lv_disp_t *disp;
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void LVGL_Init(void)
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{
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ESP_LOGI(TAG_LVGL, "Initialize LVGL library");
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lv_init();
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lv_disp_draw_buf_init(&disp_buf, buf1, buf2, LVGL_BUF_LEN ); // initialize LVGL draw buffers
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ESP_LOGI(TAG_LVGL, "Register display driver to LVGL");
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lv_disp_drv_init(&disp_drv); // Create a new screen object and initialize the associated device
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disp_drv.hor_res = EXAMPLE_LCD_H_RES;
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disp_drv.ver_res = EXAMPLE_LCD_V_RES; // Horizontal pixel count
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// disp_drv.rotated = LV_DISP_ROT_90; // 图像旋转 // Vertical axis pixel count
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disp_drv.flush_cb = example_lvgl_flush_cb; // Function : copy a buffer's content to a specific area of the display
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disp_drv.drv_update_cb = example_lvgl_port_update_callback; // Function : Rotate display and touch, when rotated screen in LVGL. Called when driver parameters are updated.
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disp_drv.draw_buf = &disp_buf; // LVGL will use this buffer(s) to draw the screens contents
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disp_drv.user_data = panel_handle;
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ESP_LOGI(TAG_LVGL,"Register display indev to LVGL"); // Custom display driver user data
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disp = lv_disp_drv_register(&disp_drv); // Create screen objects
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/********************* LVGL *********************/
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ESP_LOGI(TAG_LVGL, "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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}
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