Can Vref pin (10) on CYBLE-212019 be set up as digital input? I have a switch connected to it.
Vref cannot be used as input. A trick could be to switch Vref between two voltage levels and have the ADC convert a fixed analog voltage to see whether Vref changed.
Did you already free the two pins that are used for debugging?
Thx, I have free pins, so no worries :)