Lilygo T-RGB 2.8" display not working with SquareLine Studio

Reply to Lilygo T-RGB 2.8" display not working with SquareLine Studio on Wed, 19 Jun 2024 11:20:40 GMT

HugoP — Wed, 19 Jun 2024 11:20:40 GMT

Good morning,
I'm a newbie on this king of sfotware development and I just wanto to do an project with a several screens on lilygo t-rgb 2.8'' to control 2 servo motors but my screen remains always black... I already tried almost everything but maybe the problem is my waek knolegment about this area...
Can you share with me a simple project working with SquareLine Studio and Arduino IDE?

Thank you for you help
Hugo Pereira

Reply to Lilygo T-RGB 2.8" display not working with SquareLine Studio on Mon, 11 Mar 2024 17:40:04 GMT

Natter_LT — Mon, 11 Mar 2024 17:40:04 GMT

Yestedray at late night finaly managed to work, to do this I deleted almost all code from ui.ino file, used Lilygo suplied libraries of lvgl, now code of ui.ino looks like this:

#include
#include
#include
#include

LilyGo_RGBPanel panel;

void setup()
{
Serial.begin(115200);

// Initialize T-RGB, if the initialization fails, false will be returned.
if (!panel.begin()) {
    while (1) {
        Serial.println("Error, failed to initialize T-RGB"); delay(1000);
    }
}

// Call lvgl initialization
beginLvglHelper(panel);


ui_init();

Serial.println( "Setup done" );
panel.setBrightness(16);

}

void loop()
{
lv_timer_handler(); /* let the GUI do its work */
delay(5);
}

Later will make SLS template, thanks for advices ;-).

Reply to Lilygo T-RGB 2.8" display not working with SquareLine Studio on Sun, 10 Mar 2024 21:31:20 GMT

teastain2 — Sun, 10 Mar 2024 21:31:20 GMT

@natter_lt
Hi! LilyGO products require that you use only the TFT_eSPI or lvgl version SUPPLIED with the board!
This is from their GitHub repository:

"LilyGo-T-RGB depends on lvgl v8.3.x version. Currently lvgl has released lvgl v9.0 version. When compilation error occurs, please check whether lvgl belongs to v8.3.x"

So, you must copy the supplied-by-LilyGO libraries and overwrite the standard Arduino IDE libraries for the display to work.

You must also resist allowing the Arduino IDE to do a 'Library Update'

Hope this helps -Terry