Comments

• RCRoeder

  November 7

  Winny,
  how do i send you the code? I have not recieved an email from you yet.
• Winny

  November 8

  @RCRoeder said:
  Winny,
  how do i send you the code? I have not recieved an email from you yet.

  Hi,
  You can try modify the following sentence in the sample code I sent.
  

  And please remember to check the psram setting is correct.
  

  If it still not working, please contact us at techsupport@elecrow.com
• RCRoeder

  November 13

  one thing i have noticed is the gfx_conf.h file references lgfx::Touch_GT911 _touch_instance, but if we are now using PCA9557 is this a conflict? Still have no touch. I was told i should send my code to you, and i would be contacted. No contact so i am postingthe code here.
  // esp32 by Expressif Systems 2.9.15
  // Arduino ESP32 Boards by Arduino 20.0.13
  // LovyanGFX by Lovyan03 1.1.12
  // lvgl by kisvegabor 8.3.11
  // PCA9557

  // PSRAM; opi psram
  // Partition Scheme: Huge App

  include <Wire.h>

  include <SPI.h>

  include <PCA9557.h>

  include <lvgl.h>

  #include "ui.h"
  /**************************LVGL and UI END************************/

  /*******************************************************************************
  Config the display panel and touch panel in gfx_conf.h
  ******************************************************************************/

  include "gfx_conf.h"

  static lv_disp_draw_buf_t draw_buf;
  static lv_color_t disp_draw_buf1[screenWidth * screenHeight / 10];
  static lv_color_t disp_draw_buf2[screenWidth * screenHeight / 10];
  static lv_disp_drv_t disp_drv;

  PCA9557 Out; //for touch timing init

  /* Display flushing */
  void my_disp_flush(lv_disp_drv_t *disp, const lv_area_t *area, lv_color_t *color_p)
  {
  uint32_t w = ( area->x2 - area->x1 + 1 );
  uint32_t h = ( area->y2 - area->y1 + 1 );

  tft.pushImageDMA(area->x1, area->y1, w, h,(lgfx::rgb565_t*)&color_p->full);

  lv_disp_flush_ready( disp );

  }

  void my_touchpad_read(lv_indev_drv_t *indev_driver, lv_indev_data_t *data)
  {
  uint16_t touchX, touchY;
  bool touched = tft.getTouch( &touchX, &touchY);
  if( !touched )
  {
  data->state = LV_INDEV_STATE_REL;
  }
  else
  {
  data->state = LV_INDEV_STATE_PR;

    /*Set the coordinates*/
    data->point.x = touchX;
    data->point.y = touchY;
  
    Serial.print( "Data x " );
    Serial.println( touchX );
  
    Serial.print( "Data y " );
    Serial.println( touchY );
  

  }
  }

  void setup()
  {
  Serial.begin(9600);
  Serial.println("LVGL Widgets Demo");

  //GPIO init

  if defined (CrowPanel_50) || defined (CrowPanel_70)

  pinMode(38, OUTPUT);
  digitalWrite(38, LOW);
  pinMode(17, OUTPUT);
  digitalWrite(17, LOW);
  pinMode(18, OUTPUT);
  digitalWrite(18, LOW);
  pinMode(42, OUTPUT);
  digitalWrite(42, LOW);

  //touch timing init
  Wire.begin(19, 20);
  Out.reset();
  Out.setMode(IO_OUTPUT);
  Out.setState(IO0, IO_LOW);
  Out.setState(IO1, IO_LOW);
  delay(20);
  Out.setState(IO0, IO_HIGH);
  delay(100);
  Out.setMode(IO1, IO_INPUT);

  elif defined (CrowPanel_43)

  pinMode(20, OUTPUT);
  digitalWrite(20, LOW);
  pinMode(19, OUTPUT);
  digitalWrite(19, LOW);
  pinMode(35, OUTPUT);
  digitalWrite(35, LOW);
  pinMode(38, OUTPUT);
  digitalWrite(38, LOW);
  pinMode(0, OUTPUT);//TOUCH-CS

  endif

  //Display Prepare
  tft.begin();
  tft.fillScreen(TFT_BLACK);
  tft.setTextSize(2);
  delay(200);

  lv_init();

  delay(100);

  lv_disp_draw_buf_init(&draw_buf, disp_draw_buf1, disp_draw_buf2, screenWidth * screenHeight/10);
  /* Initialize the display /
  lv_disp_drv_init(&disp_drv);
  / Change the following line to your display resolution */
  disp_drv.hor_res = screenWidth;
  disp_drv.ver_res = screenHeight;
  disp_drv.flush_cb = my_disp_flush;
  disp_drv.full_refresh = 1;
  disp_drv.draw_buf = &draw_buf;
  lv_disp_drv_register(&disp_drv);

  /* Initialize the (dummy) input device driver */
  static lv_indev_drv_t indev_drv;
  lv_indev_drv_init(&indev_drv);
  indev_drv.type = LV_INDEV_TYPE_POINTER;
  indev_drv.read_cb = my_touchpad_read;
  lv_indev_drv_register(&indev_drv);

  tft.fillScreen(TFT_BLACK);

  ui_init();

  Serial.println( "Setup done" );

  }

  void loop()
  {
  lv_timer_handler();
  delay(5);
  }