ESP32 S3 3.5 inch LCD Simple use example

https://spotpear.com/wiki/ESP32-S3-3.5-inch-LCD-Captive-TouchScreen-Display-480x320-Tablet-MP3-Video-Weather-Clock.html

Too many errors when compiling the examples supplied!

I was unable compile DEMO_LVGL without errors

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I am spotpear tech-support

I can contact your email to help you

Sure, hwcintra@amcp.com.br

tks

I´m running a simple pgm, but get no picture, can you help me?

#define JC3248W535

#include <Arduino_GFX_Library.h>

#define GFX_BL 1

void setup(void)

{

 Serial.begin(115200);

 delay(5000); // 5 seconds

 Serial.println("Arduino_GFX Hello World example");

#ifdef GFX_EXTRA_PRE_INIT

 GFX_EXTRA_PRE_INIT();

#endif

  //Init Display

 if (!gfx->begin())

 {

   Serial.println("gfx->begin() failed!");

 }

 gfx->fillScreen(BLACK);

 pinMode(1, OUTPUT);

 digitalWrite(1, HIGH);

 gfx->setCursor(10, 10);

 gfx->setTextColor(RED);

 gfx->println("Hello World!");

 delay(5000); // 5 seconds

}

void loop()

{

 gfx->setCursor(random(gfx->width()), random(gfx->height()));

 gfx->setTextColor(random(0xffff), random(0xffff));

 gfx->setTextSize(random(6) /* x scale */, random(6) /* y scale */, random(2) /* pixel_margin */);

 gfx->println("Hello World!");

 delay(1000); // 1 second

}

Copy the library we provided to the library used by Arduino

If you have your QSPI pins defined properly and your gfx driver set up properly, you apparently have to use a canvas. This worked for me:

//for the 3.5inch JC3248W535-C board, LCD uses AXS15231 driver, and Capacitive touch pad uses same driver.

#define LCD_CS 45

#define LCD_SCLK 47

#define LCD_SDIO0 21

#define LCD_SDIO1 48

#define LCD_SDIO2 40

#define LCD_SDIO3 39

#define LCD_RST -1

#define TFT_BL  1

#define LCD_WIDTH 320

#define LCD_HEIGHT 480

Arduino_DataBus *bus = new Arduino_ESP32QSPI(

   LCD_CS /* CS */, LCD_SCLK /* SCK */, LCD_SDIO0 /* SDIO0 */,

   LCD_SDIO1 /* SDIO1 */, LCD_SDIO2 /* SDIO2 */, LCD_SDIO3 /* SDIO3 */);

Arduino_GFX *output_display = new Arduino_AXS15231B(bus, LCD_RST /* RST */, 0 /* rotation */,

                                       false /* IPS */, LCD_WIDTH, LCD_HEIGHT, 0, 0, 0, 0);

#define CANVAS_WIDTH  320  // Canvas width

#define CANVAS_HEIGHT 480  // Canvas height

Arduino_GFX *gfx = new Arduino_Canvas(CANVAS_WIDTH, CANVAS_HEIGHT, output_display);

------------

After your normal "gfx-> " commands, you must use:

gfx->flush(); //Push the canvas content to the display

By the way, for the Capacitive touch pad, the I2C pins (SDA and SCL) are wrong (reversed) on the schematic. IO4 is SDA, IO8 is SCL, IO3 is INT.