• Install lvgl library.
• The MaTouch ESP32-S3 Parallel TFT with Touch 7" is not compatible with the TFT_eSPI library, so I use the GFX_Library_of_Arduino library instead of the driver.

Since I did not use the TFT_eSPI library, it is needed to delete or comment all the codes related to the TFT_eSPI library.

#include <tft_espi.h>

TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */

    tft.startWrite();
    tft.setAddrWindow( area->x1, area->y1, w, h );
    tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
    tft.endWrite();

    tft.begin();          /* TFT init */
    tft.setRotation( 3 ); /* Landscape orientation, flipped */</tft_espi.h>

When I use the GFX library， it is needed to define the GFX Library For the Arduino Interface pin.

Arduino_ESP32RGBPanel *bus = new Arduino_ESP32RGBPanel(
    GFX_NOT_DEFINED /* CS */, GFX_NOT_DEFINED /* SCK */, GFX_NOT_DEFINED /* SDA */,
    40 /* DE */, 41 /* VSYNC */, 39 /* HSYNC */, 42 /* PCLK */,
    45 /* R0 */, 48 /* R1 */, 47 /* R2 */, 21 /* R3 */, 14 /* R4 */,
    5 /* G0 */, 6 /* G1 */, 7 /* G2 */, 15 /* G3 */, 16 /* G4 */, 4 /* G5 */,
    8 /* B0 */, 3 /* B1 */, 46 /* B2 */, 9 /* B3 */, 1 /* B4 */
);


Arduino_RPi_DPI_RGBPanel *gfx = new Arduino_RPi_DPI_RGBPanel(
    bus,
    SCREEN_W /* width */, 1 /* hsync_polarity */, 40 /* hsync_front_porch */, 48 /* hsync_pulse_width */, 128 /* hsync_back_porch */,
    SCREEN_H /* height */, 1 /* vsync_polarity */, 13 /* vsync_front_porch */, 3 /* vsync_pulse_width */, 45 /* vsync_back_porch */,
    1 /* pclk_active_neg */, 16000000 /* prefer_speed */, true /* auto_flush */);

• Modify the touchpad function according to the pre-set functions in touch.h, and pass the state of the touchpad to the LVGL graphics library.

void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data)
{
    if (touch_has_signal())
    {
        if (touch_touched())
        {
            data->state = LV_INDEV_STATE_PR;


            /*Set the coordinates*/
            data->point.x = touch_last_x;
            data->point.y = touch_last_y;
        }
        else if (touch_released())
        {
            data->state = LV_INDEV_STATE_REL;
        }
    }
    else
    {
        data->state = LV_INDEV_STATE_REL;
    }
}

• Connecting wifi.

#define SSID "Makerfabs"
#define PWD "20160704"

void wifi_init()
{
    String temp = "WiFi Connecting";
    lv_label_set_text(ui_Label5,temp.c_str());


    WiFi.begin(SSID, PWD);


    int connect_count = 0;
    while (WiFi.status() != WL_CONNECTED)
    {
        vTaskDelay(500);
        USBSerial.print(".");
        temp = temp + ".";
        lv_label_set_text(ui_Label5,temp.c_str());
        connect_count++;
    }


    lv_label_set_text(ui_Label5,"WiFi Connect Over");
    net_flag = 1;
}

if (net_flag != 1)
            if ((millis() - task_runtime_1) > 1000)
            {
                wifi_init();
                task_runtime_1 = millis();
            }

• Request webhook, process the events.

int index1;
int http_flag = 0;

void http_func(int index)
{
    HTTPClient http;


    USBSerial.print("[HTTP] begin...\n");


    String url = "";


    switch (index)
    {
    case 0:
        url = "http://homeassistant.local:8123/api/webhook/-LYt299nHgzxcCD95yct-G2jJ";
        break;
    case 1:
        url = "http://homeassistant.local:8123/api/webhook/-BhCrGgyQALW6F7b58N2PtoE7";
        break;
    case 2:
        url = "http://homeassistant.local:8123/api/webhook/-uWCIeRoUjy-lzQ7vbxnFQI3i";
        break;
    case 3:
        url = "http://homeassistant.local:8123/api/webhook/-0LPYwfu5Rr-1XTOGTnCDRmEU";
        break;


    default:
        USBSerial.println("Input error");
        return;
    }


    http.begin(url);


    USBSerial.print("[HTTP] GET...\n");
    // start connection and send HTTP header
    int httpCode = http.GET();


    // httpCode will be negative on error
    if (httpCode > 0)
    {
        // HTTP header has been send and Server response header has been handled
        USBSerial.printf("[HTTP] GET... code: %d\n", httpCode);


        // file found at server
        if (httpCode == HTTP_CODE_OK)
        {
            String payload = http.getString();
            USBSerial.println(payload);
        }
    }
    else
    {
        USBSerial.printf("[HTTP] GET... failed, error: %s\n", http.errorToString(httpCode).c_str());
    }


    http.end();
}

• The raw code.