Zumo32u4EncoderTests
Implementing position counting without Zumo libraries, but using the Arudino IDE.
NOTE: Currently not working using single pin-interrupt service routines. This causes pin8, a non-interrupt pin, to not allow left track counting.
By using pin bus interrupts to cover normally non-interrupt pins, the Zumo can interrupt on pin8 which is a encoder change detection input.
This is a 32u4 based (Leonardo class) microcontroller.