Looking to better understand these lines...
Code: Select all
#define YP A2 // must be an analog pin, use "An" notation!
#define XM A3 // must be an analog pin, use "An" notation!
#define YM 8 // can be a digital pin
#define XP 9 // can be a digital pin
Also double-checking: The XM & XP values, 8 & 9, are GPIO numbers, correct? or something else?