I don't appear to have much luck with pins A8 - A11. I am using Arduino Mbed OS Giga Boards v 4.4.1 To enable the program to compile, I have copied the pure_analog_pins.cpp and pure_analog_pins.h from ...

I'm not familiar with the ADC of the Arduino-Microcontroller, so most of the code is copied. I'm not sure what source I had when I made it, but I'm pretty sure it was ...