Hi, all
I wrote a general esp32 lvgl display drive display_100ask_drivers based on esp-idf. display_100ask_drivers works out of the box and supports two driver types: pure spi or iic or other protocol interfaces, and esp_lcd driver interface. You can switch flexibly in menuconfig. Currently, two driver interfaces, spi and esp_lcd, have been completed, and more will be added in the future! I will continue to make it easier to use, while providing better results.
Here is the LVGL demo on two sizes of SPI screens:
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Simple and easy-to-use ESP32 display library (esp-idf), 240x240 screen demo: https://youtu.be/j2DOPNrJrvM
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Simple and easy-to-use ESP32 display library (esp-idf), 320x480 screen demo: https://youtu.be/zep50UBaiew
The usage is very simple, you can use the whole esp-idf-components as components, or extract display_100ask_driver and use it as a separate component. Either way, the final initialization code is the same:
static void guiTask(void *pvParameter)
{
static lv_disp_draw_buf_t disp_buf;
static lv_disp_drv_t disp_drv; // contains callback functions
(void)pvParameter;
xGuiSemaphore = xSemaphoreCreateMutex();
lv_init();
/* Initialize display */
#if CONFIG_USE_100ASK_DISPLAY_SCREEN_ESP_LCD_PANEL
esp_lcd_panel_handle_t panel_handle = NULL;
panel_handle = display_100ask_hal_init(&disp_drv);
#else
display_100ask_hal_init();
#endif
/* Initialize key */
//init_input_key();
lv_color_t *buf1 = heap_caps_malloc(LV_DISP_BUF_SIZE * sizeof(lv_color_t), MALLOC_CAP_SPIRAM);
if(buf1 == NULL)
buf1 = malloc(LV_DISP_BUF_SIZE * sizeof(lv_color_t));
assert(buf1 != NULL);
/* Use double buffered when not working with monochrome displays */
#ifndef CONFIG_LV_TFT_DISPLAY_MONOCHROME
lv_color_t *buf2 = heap_caps_malloc(LV_DISP_BUF_SIZE * sizeof(lv_color_t), MALLOC_CAP_SPIRAM);
if (buf2 == NULL)
buf2 = malloc(LV_DISP_BUF_SIZE * sizeof(lv_color_t));
assert(buf2 != NULL);
#else
static lv_color_t *buf2 = NULL;
#endif
uint32_t size_in_px = LV_DISP_BUF_SIZE;
/* Initialize the working buffer depending on the selected display.
* NOTE: buf2 == NULL when using monochrome displays. */
lv_disp_draw_buf_init(&disp_buf, buf1, buf2, size_in_px);
lv_disp_drv_init(&disp_drv);
disp_drv.flush_cb = display_100ask_hal_lvgl_flush;
#ifdef CONFIG_USE_100ASK_DISPLAY_SCREEN_ESP_LCD_PANEL
disp_drv.user_data = panel_handle;
#endif
/* When using a monochrome display we need to register the callbacks:
* - rounder_cb
* - set_px_cb */
#ifdef CONFIG_LV_TFT_DISPLAY_MONOCHROME
disp_drv.rounder_cb = disp_driver_rounder;
disp_drv.set_px_cb = disp_driver_set_px;
#endif
disp_drv.draw_buf = &disp_buf;
#if ((CONFIG_DISPLAY_SCREEN_100ASK_ROTATION == 0) || (CONFIG_DISPLAY_SCREEN_100ASK_ROTATION == 180))
disp_drv.hor_res = CONFIG_DISPLAY_SCREEN_100ASK_WIDTH;
disp_drv.ver_res = CONFIG_DISPLAY_SCREEN_100ASK_HEIGHT;
#elif ((CONFIG_DISPLAY_SCREEN_100ASK_ROTATION == 90) || (CONFIG_DISPLAY_SCREEN_100ASK_ROTATION == 270))
disp_drv.hor_res = CONFIG_DISPLAY_SCREEN_100ASK_HEIGHT;
disp_drv.ver_res = CONFIG_DISPLAY_SCREEN_100ASK_WIDTH;
#endif
lv_disp_drv_register(&disp_drv);
/* Register an input device when enabled on the menuconfig */
#if CONFIG_LV_TOUCH_CONTROLLER != TOUCH_CONTROLLER_NONE
lv_indev_drv_t indev_drv;
lv_indev_drv_init(&indev_drv);
indev_drv.read_cb = touch_driver_read;
indev_drv.type = LV_INDEV_TYPE_POINTER;
lv_indev_drv_register(&indev_drv);
#endif
/* Create and start a periodic timer interrupt to call lv_tick_inc */
const esp_timer_create_args_t periodic_timer_args = {
.callback = &lv_tick_task,
.name = "periodic_gui",
};
esp_timer_handle_t periodic_timer;
ESP_ERROR_CHECK(esp_timer_create(&periodic_timer_args, &periodic_timer));
ESP_ERROR_CHECK(esp_timer_start_periodic(periodic_timer, LV_TICK_PERIOD_MS * 1000));
/* Create the demo application */
create_demo_application();
while (1)
{
/* Delay 1 tick (assumes FreeRTOS tick is 10ms */
vTaskDelay(pdMS_TO_TICKS(10));
/* Try to take the semaphore, call lvgl related function on success */
if (pdTRUE == xSemaphoreTake(xGuiSemaphore, portMAX_DELAY))
{
lv_task_handler();
xSemaphoreGive(xGuiSemaphore);
}
}
/* A task should NEVER return */
free(buf1);
#ifndef CONFIG_LV_TFT_DISPLAY_MONOCHROME
free(buf2);
#endif
vTaskDelete(NULL);
}
get display_100ask_drivers: https://github.com/100askTeam/esp-idf-components/tree/master/display_100ask_drivers
