1: Try made calibration first
Use leveler select Config->Touch cal
Touch top+left screen side
Touch bottom+right screen side
After check work, use Config->Touch Test
If all good - Save config (Confog->Save)
In not work (hardware problem):
Touch screen use +/- X and Y I/O pins for measure position - check it
For get position used ADC
For work ADC need correct voltage on on CPU VDDA (pin 9, need ~3.3V) and ground on VSSA (pin 8)
