Read data display on screen to save SD

[phamhuyvn]

I have a project that I need to know what display on my TFT,
Anyway for me to get data which is display on screen and save to file or array to SD.

Thank

[Bodmer]

Not all displays support reading back the graphics RAM.

Run the example here to see if readPixel works:
https://github.com/Bodmer/TFT_eSPI/tree/master/examples/Test%20and%20diagnostics/TFT_ReadWrite_Test

If that does not work then drawing the screen into a sprite is an option if sufficient RAM is available.

[phamhuyvn]

THanks, I can get pixel but it too low. Anyway we can do anything in a buffer / frame and then display it to screen then