[TFT 2.8" shield] get a pixel's color

[thecheshirecat]

Hi everybody,
I managed to use the TFT 2.8" shield for arduino, and I'd like to know how to get a Pixel's color. Is there a solution to do that ?
Thanks in advance,

TheCheshireCat

[thecheshirecat]

up...

[pburgess]

There's a pixel read function in the library, but I can't say for certain at the moment whether it actually works...might have possibly been a placeholder. Give it a shot and see if it meets your needs:

Code: Select all

uint16_t color;
color = tft.readPixel(x, y);

[thecheshirecat]

Thank you very much for your answer, it looks exactly how i need !
Just another little question : Is the TFT shield's library working with an Arduino Mega ? Can I use the exact same code with a Mega and an Uno ?

[pburgess]

Sure does, but it runs a little faster on the Uno than the Mega. Also, if you're using the BMP examples you'll need to configure the SD library to use "soft" SPI.