5 years, 11 months ago.

resistive touch

Hi there. recently that use the C language, and I'm a little lost, so I would appreciate someone to help me. the question is that I dont  find in the library or TFTtouch classes as I do to get from the main program the x and y values ​​of the touch panel. alguein if you give me a helping hand would be very grateful. a greeting

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5 years, 11 months ago.

Search for "4 wire resistive touch ".
There is a nice documentation provided by Sparkfun https://www.sparkfun.com/datasheets/LCD/HOW%20DOES%20IT%20WORK.pdf
Your Seed device provides theses 4 pins.
For the calibration I found a note from AVR at http://www.atmel.com/Images/doc8091.pdf
Robert