Hello everyone i am new in lvgl Square line studio, i am facing issue with display, i am not getting desired output. i made custom ui using square line studio and it compile in arduino ide and succesfully uploading on esp32 wroom kit, i’m using lvgl version 8.3.6, with 1.69 inch lcd display it is 240*280 pixels with driver st7789v2 on it. i did this connection,
#define TFT_MOSI 23 //DIN
#define TFT_SCLK 18
#define TFT_CS 14 // Chip select control pin
#define TFT_DC 27 // Data Command control pin
#define TFT_RST 33 // Reset pin (could connect to Arduino RESET pin)
#define TFT_BL 32 // LED back-light (required for M5Stack)
after uplaoding code display look black, it show nothing.
/You code here/
#include <lvgl.h>
#include <TFT_eSPI.h>
#include <ui.h>
/*Don't forget to set Sketchbook location in File/Preferencesto the path of your UI project (the parent foder of this INO file)*/
/*Change to your screen resolution*/
static const uint16_t screenWidth = 240;
static const uint16_t screenHeight = 280;
static lv_disp_draw_buf_t draw_buf;
static lv_color_t buf[ screenWidth * screenHeight / 10 ];
TFT_eSPI tft = TFT_eSPI(screenWidth, screenHeight); /* TFT instance */
#if LV_USE_LOG != 0
/* Serial debugging */
void my_print(const char * buf)
{
Serial.printf(buf);
Serial.flush();
}
#endif
/* 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.startWrite();
tft.setAddrWindow( area->x1, area->y1, w, h );
tft.pushColors( ( uint16_t * )&color_p->full, w * h, true );
tft.endWrite();
lv_disp_flush_ready( disp );
}
/*Read the touchpad*/
void my_touchpad_read( lv_indev_drv_t * indev_driver, lv_indev_data_t * data )
{
uint16_t touchX = 0, touchY = 0;
bool touched = false;//tft.getTouch( &touchX, &touchY, 600 );
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( 115200 ); /* prepare for possible serial debug */
String LVGL_Arduino = "Hello Arduino! ";
LVGL_Arduino += String('V') + lv_version_major() + "." + lv_version_minor() + "." + lv_version_patch();
Serial.println( LVGL_Arduino );
Serial.println( "I am LVGL_Arduino" );
lv_init();
#if LV_USE_LOG != 0
lv_log_register_print_cb( my_print ); /* register print function for debugging */
#endif
tft.begin(); /* TFT init */
tft.setRotation( 3 ); /* Landscape orientation, flipped */
lv_disp_draw_buf_init( &draw_buf, buf, NULL, screenWidth * screenHeight / 10 );
/*Initialize the display*/
static lv_disp_drv_t disp_drv;
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 );
ui_init();
Serial.println( "Setup done" );
}
void loop()
{
lv_timer_handler(); /* let the GUI do its work */
delay(5);
}
this is a issue.
this is display,
this is user_setup in TFT_eSPI
// User defined information reported by "Read_User_Setup" test & diagnostics example
#define USER_SETUP_INFO "User_Setup"
// Define to disable all #warnings in library (can be put in User_Setup_Select.h)
//#define DISABLE_ALL_LIBRARY_WARNINGS
// ##################################################################################
//
// Section 1. Call up the right driver file and any options for it
//
// ##################################################################################
#define ST7789_DRIVER // Full configuration option, define additional parameters below for this display
//#define TFT_MISO 19
#define TFT_MOSI 23
#define TFT_SCLK 18
#define TFT_CS 14 // Chip select control pin
#define TFT_DC 27 // Data Command control pin
#define TFT_RST 33 // Reset pin (could connect to Arduino RESET pin)
#define TFT_BL 32 // LED back-light (required for M5Stack)
// #define SPI_FREQUENCY 1000000
// #define SPI_FREQUENCY 5000000
// #define SPI_FREQUENCY 10000000
// #define SPI_FREQUENCY 20000000
//#define SPI_FREQUENCY 27000000
#define SPI_FREQUENCY 40000000
// #define SPI_FREQUENCY 55000000 // STM32 SPI1 only (SPI2 maximum is 27MHz)
// #define SPI_FREQUENCY 80000000
// Optional reduced SPI frequency for reading TFT
#define SPI_READ_FREQUENCY 20000000
// The XPT2046 requires a lower SPI clock rate of 2.5MHz so we define that here:
#define SPI_TOUCH_FREQUENCY 2500000