ESP32 7" + LVGL almost working

ateleiatelei
in Elecrow HMI Display

Hello,

I'm running the following code and it almost run. I can compile/upload the firmware, but the problem is: The screen does not work properly.

I've create a squareline project with just a single button and the display does not render it properly.


Packages:

ESP32 v2.0.3

Arduino GFX 1.2.8

LVGL 8.3.11


Any idea how can we make it work?


Thanks in advance.


Code: *************************************************************************************


#include <Wire.h>

#include <SPI.h>


#define USE_UI  //if you want to use the ui export from Squareline, please do not annotate this line.


#if defined USE_UI

#include "lvgl.h"

#include "ui.h"

#endif


#include "Arduino_GFX_Library.h"


#define TFT_BL 2

//#define GFX_BL DF_GFX_BL // default backlight pin, you may replace DF_GFX_BL to actual backlight pin


/******Please define a corresponding line based on your development board.************/

//#define Display_43

//#define Display_50

#define Display_70

/*******************************************************************************

 * Screen Driver Configuration

*******************************************************************************/

#if defined (Display_43)     //4.3INCH 480x272

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* lcd = new Arduino_RPi_DPI_RGBPanel(

bus,

480 /* width */, 0 /* hsync_polarity */, 8 /* hsync_front_porch */, 4 /* hsync_pulse_width */, 43 /* hsync_back_porch */,

272 /* height */, 0 /* vsync_polarity */, 8 /* vsync_front_porch */, 4 /* vsync_pulse_width */, 12 /* vsync_back_porch */,

1 /* pclk_active_neg */, 7000000 /* prefer_speed */, true /* auto_flush */);


#elif defined (Display_50)     //5.0INCH 800x480

Arduino_ESP32RGBPanel* bus = new Arduino_ESP32RGBPanel(

GFX_NOT_DEFINED /* CS */, GFX_NOT_DEFINED /* SCK */, GFX_NOT_DEFINED /* SDA */,

40 /* DE */, 41 /* VSYNC */, 39 /* HSYNC */, 0 /* 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* lcd = new Arduino_RPi_DPI_RGBPanel(

bus,

800 /* width */, 0 /* hsync_polarity */, 210 /* hsync_front_porch */, 4 /* hsync_pulse_width */, 43 /* hsync_back_porch */,

480 /* height */, 0 /* vsync_polarity */, 22 /* vsync_front_porch */, 4 /* vsync_pulse_width */, 12 /* vsync_back_porch */,

1 /* pclk_active_neg */, 16000000 /* prefer_speed */, true /* auto_flush */);


#elif defined (Display_70)    //7.0INCH 800x480

Arduino_ESP32RGBPanel* bus = new Arduino_ESP32RGBPanel(

GFX_NOT_DEFINED /* CS */, GFX_NOT_DEFINED /* SCK */, GFX_NOT_DEFINED /* SDA */,

41 /* DE */, 40 /* VSYNC */, 39 /* HSYNC */, 0 /* PCLK */,

14 /* R0 */, 21 /* R1 */, 47 /* R2 */, 48 /* R3 */, 45 /* R4 */,

9 /* G0 */, 46 /* G1 */, 3 /* G2 */, 8 /* G3 */, 16 /* G4 */, 1 /* G5 */,

15 /* B0 */, 7 /* B1 */, 6 /* B2 */, 5 /* B3 */, 4 /* B4 */

);

Arduino_RPi_DPI_RGBPanel* lcd = new Arduino_RPi_DPI_RGBPanel(

bus,

800 /* width */, 0 /* hsync_polarity */, 40 /* hsync_front_porch */, 48 /* hsync_pulse_width */, 40 /* hsync_back_porch */,

480 /* height */, 0 /* vsync_polarity */, 13 /* vsync_front_porch */, 1 /* vsync_pulse_width */, 31 /* vsync_back_porch */,

1 /* pclk_active_neg */, 33000000 /* prefer_speed */, true /* auto_flush */);


#endif


/*******************************************************************************

 * Screen Driver Configuration end

*******************************************************************************/



/*******************************************************************************

  Please config the touch panel in touch.h

 ******************************************************************************/

#include "touch.h"


#ifdef USE_UI

 /* Change to your screen resolution */

static uint32_t screenWidth;

static uint32_t screenHeight;

static lv_disp_draw_buf_t draw_buf;

static lv_color_t disp_draw_buf[800 * 480 / 10];  //notice here!!! 5,7inch: lv_color_t disp_draw_buf[800*480/10]      4.3inch: lv_color_t disp_draw_buf[480*272/10]

//static lv_color_t disp_draw_buf;

static lv_disp_drv_t disp_drv;


/* 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);


#if (LV_COLOR_16_SWAP != 0)

lcd->draw16bitBeRGBBitmap(area->x1, area->y1, (uint16_t*)&color_p->full, w, h);

#else

lcd->draw16bitRGBBitmap(area->x1, area->y1, (uint16_t*)&color_p->full, w, h);

#endif


lv_disp_flush_ready(disp);

}


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;

Serial.print("Data (x,y) : ");

Serial.print(touch_last_x);

Serial.print(",");

Serial.println(touch_last_y);

}

else if (touch_released())

{

data->state = LV_INDEV_STATE_REL;

}

}

else

{

data->state = LV_INDEV_STATE_REL;

}

delay(15);

}

#endif


void setup()

{

Serial.begin(115200);

Serial.println("LVGL Widgets Demo");


#if defined(Display_50) || defined(Display_70)

//IO Port Pins

pinMode(38, OUTPUT); //port_d

digitalWrite(38, LOW);

pinMode(17, OUTPUT); //i2s_sdin

digitalWrite(17, LOW);

pinMode(18, OUTPUT); //i2s_lrclk

digitalWrite(18, LOW);

pinMode(42, OUTPUT); //i2s_bclk

digitalWrite(42, LOW);

#elif defined(Display_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


 // Init Display

lcd->begin();

lcd->fillScreen(BLACK);

lcd->setTextSize(2);

delay(200);


#ifdef USE_UI

lv_init();


//delay(100);

touch_init();


screenWidth = lcd->width();

screenHeight = lcd->height();


lv_disp_draw_buf_init(&draw_buf, disp_draw_buf, NULL, screenWidth * screenHeight / 10);

// lv_disp_draw_buf_init(&draw_buf, disp_draw_buf, NULL, 480 * 272 / 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.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);

#endif


#ifdef TFT_BL

pinMode(TFT_BL, OUTPUT);

digitalWrite(TFT_BL, HIGH);

//ledcSetup(1, 300, 8);

//ledcAttachPin(TFT_BL, 1);

//ledcWrite(1, 255); /* Screen brightness can be modified by adjusting this parameter. (0-255) */

#endif






#ifdef USE_UI

ui_init();//ui from Squareline or GUI Guider

#else


//lcd->setCursor(300, 230);

//lcd->printf("Hello World!");


lcd->fillScreen(RED);

delay(800);

lcd->fillScreen(BLUE);

delay(800);

lcd->fillScreen(YELLOW);

delay(800);

lcd->fillScreen(GREEN);

delay(800);


#endif

Serial.println("Setup done");

}


void loop()

{

while (1)

{

#ifdef USE_UI

lv_timer_handler();

delay(5);

#endif

}

}

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