Sunton board 4827S043 and GT911 capacitive touch

[gamma2]

I have a 4827S043 board with capacitive touch and I can't get touch to work with "2_user_setting.ino" example (touch not responding)
This touch screen worls through the i2c bus with this setting (from documentation) SDA=pin 19 SCL=pin20 RST=pin 38 INT=-1 (N.C.)
This is my configuration

#define LGFX_USE_V1
#include <LovyanGFX.hpp>

// ESP32でLovyanGFXを独自設定で利用する場合の設定例

#include <lgfx/v1/platforms/esp32s3/Panel_RGB.hpp>
#include <lgfx/v1/platforms/esp32s3/Bus_RGB.hpp>

class LGFX : public lgfx::LGFX_Device
{

  lgfx::Bus_RGB     _bus_instance;
  lgfx::Panel_RGB   _panel_instance;
  lgfx::Light_PWM   _light_instance;
  lgfx::Touch_GT911 _touch_instance;


public:

  LGFX(void)
  {

    { 
      auto cfg = _panel_instance.config();   

      cfg.panel_width      =   480;  
      cfg.panel_height     =   272;  
      cfg.offset_x         =     0;  
      cfg.offset_y         =     0;  

      cfg.memory_width     =   480;  
      cfg.memory_height    =   272;  

      _panel_instance.config(cfg);
    }

/------------------------------------------------- Omitted Display configuration --------------------------------------------------
    
//
    { // タッチスクリーン制御の設定を行います。（必要なければ削除）
      auto cfg = _touch_instance.config();

      cfg.x_min      = 0;
      cfg.x_max      = 480;
      cfg.y_min      = 0;
      cfg.y_max      = 272;
      cfg.pin_int    = -1;
      cfg.bus_shared = false;
      cfg.offset_rotation = 0;
// I2C接続
    //  cfg.i2c_port   = 1;
      cfg.pin_sda    = GPIO_NUM_19;
      cfg.pin_scl    = GPIO_NUM_20;
	    cfg.pin_cs   	 = GPIO_NUM_38;
      cfg.pin_rst    = -1;
      cfg.freq       = 400000;
    //  cfg.i2c_addr   = 0x5D;        // 0x5D , 0x14

      _touch_instance.config(cfg);
      _panel_instance.setTouch(&_touch_instance);  // タッチスクリーンをパネルにセットします。
    }
//

    setPanel(&_panel_instance); // 使用するパネルをセットします。
  }
};

// 準備したクラスのインスタンスを作成します。
LGFX display;

The rest of the program is identical to the example.

I have verified that the program hangs on the call to the function:

display.calibrateTouch(nullptr, fg, bg, std::max(display.width(), display.height()) >> 3);

The display works perfectly.

[gamma2]

Resolved

[gamma2]

I change the line "cfg.pin_cs = GPIO_NUM_38;" in configuration file to "cfg.pin_cs = -1;" (N.C.)