I'm using a Teensy 4.0 with the Audio Board and am trying to conserve as many GPIO pins as possible. My project does not use any audio input. This being the case, am I free to use pin 8?
Two issues - I can't remember if omitting I2S input in the Audio tool frees that pin from alternate function setting, and if the audio shield is plugged into the Teensy it will be driving that pin constantly.