ESP32-S2 st7789 SPI TFT彩屏240X320

例子乐鑫官方 esp-iot-solution/examples/hmi/lvgl_example

点左下角齿轮（SDK Configuration Editor）选择开发板为

Saola With Esp32S2 Onboard From Espressif

设置USB输出调试文字

修改头文件中引脚：

 D:\esp-iot-solution\examples\common_components\boards\esp32s2-saola-1\board.h

#define BOARD_IO_SPI2_SCK 36    //FSPICLK   接屏幕的SCL引脚
#define BOARD_IO_SPI2_MOSI 35   //FSPID     截屏幕的SDA引脚
#define BOARD_IO_SPI2_MISO 37   //不用接屏幕

修改内容：

D:\esp-iot-solution\examples\hmi\lvgl_example\main\app_main.c

void app_main()
{
 
    printf("Hello world!\n");
 
    /* Print chip information */
    esp_chip_info_t chip_info;
    uint32_t flash_size;
    esp_chip_info(&chip_info);
    printf("This is %s chip with %d CPU core(s), WiFi%s%s, ",
           CONFIG_IDF_TARGET,
           chip_info.cores,
           (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
           (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
 
    printf("silicon revision %d, ", chip_info.revision);
    // if(lv_list_get_size(NULL, &flash_size) != ESP_OK) {
    //     printf("Get flash size failed");
    //     return;
    // }
 
    // printf("%uMB %s flash\n", flash_size / (1024 * 1024),
    //        (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
 
    printf("Minimum free heap size: %d bytes\n", esp_get_minimum_free_heap_size());
 
    for (int i = 5; i >= 0; i--) {
        printf("Restarting in %d seconds...\n", i);
        vTaskDelay(1000 / portTICK_PERIOD_MS);
    }
    printf("Restarting now.\n");
    fflush(stdout);
    // esp_restart();
 
 
 
    iot_board_init();
    spi_bus_handle_t spi2_bus = iot_board_get_handle(BOARD_SPI2_ID);
    //60MHz刚好合适，高了屏幕闪烁，低了FPS太低
    #define BOARD_LCD_SPI_CLOCK_FREQ 60000000
    scr_driver_t lcd_drv;
    touch_panel_driver_t touch_drv;
    scr_interface_spi_config_t spi_lcd_cfg = {
        .spi_bus = spi2_bus,
        .pin_num_cs = 34,   //FSPICS0   接屏幕的CS引脚
        .pin_num_dc = 33,   //FSPIHD    接屏幕的A0引脚
        .clk_freq = BOARD_LCD_SPI_CLOCK_FREQ,
        .swap_data = true,
    };
 
    scr_interface_driver_t *iface_drv;
    scr_interface_create(SCREEN_IFACE_SPI, &spi_lcd_cfg, &iface_drv);
 
    scr_controller_config_t lcd_cfg = {
        .interface_drv = iface_drv,
        .pin_num_rst = 9,   //FSPIHD    接屏幕的RESET引脚
        .pin_num_bckl = 38,//FSPIWP     接屏幕的BL引脚 背光
        .rst_active_level = 0,
        .bckl_active_level = 1,
        .offset_hor = 0,
        .offset_ver = 0,
        .width = 240,
        .height = 320,
        .rotate = SCR_DIR_TBRL,//防止镜像显示
    };
    scr_find_driver(SCREEN_CONTROLLER_ST7789, &lcd_drv);
    lcd_drv.init(&lcd_cfg);
 
    // touch_panel_config_t touch_cfg = {
    //     .interface_spi = {
    //         .spi_bus = spi2_bus,
    //         .pin_num_cs = BOARD_TOUCH_SPI_CS_PIN,
    //         .clk_freq = 10000000,
    //     },
    //     .interface_type = TOUCH_PANEL_IFACE_SPI,
    //     .pin_num_int = -1,
    //     .direction = TOUCH_DIR_TBLR,
    //     .width = 240,
    //     .height = 320,
    // };
    // touch_panel_find_driver(TOUCH_PANEL_CONTROLLER_XPT2046, &touch_drv);
    // touch_drv.init(&touch_cfg);
    // touch_drv.calibration_run(&lcd_drv, false);
 
    /* Initialize LittlevGL GUI */
    lvgl_init(&lcd_drv, NULL);// &touch_drv);
 
    lvgl_acquire();
#ifdef CONFIG_LV_DEMO_BENCHMARK
    lv_demo_benchmark();
#elif defined CONFIG_LV_DEMO_PRINTER
    lv_demo_printer();
#elif defined CONFIG_LV_DEMO_WIDGETS
    lv_demo_widgets();
#elif defined CONFIG_LV_EX_GET_STARTED
    lv_ex_get_started_1();
#elif defined CONFIG_LV_DEMO_STRESS
    lv_demo_stress();
#elif defined CONFIG_LV_EX_STYLE
    lv_ex_style_1();
#endif
    lvgl_release();
 
    ESP_LOGI(TAG, "[APP] IDF version: %s", esp_get_idf_version());
    ESP_LOGI(TAG, "[APP] Free memory: %d bytes", esp_get_free_heap_size());
}