I would like to detect zero crossings of the DAC output to generate an interrupt. It appears that there are three comparators on the Teensy 3.2, including one on the DAC. I assume that the "ANALOG_COMP_vect ISR is needed. How to attach an interrupt to that?
Also I realize that the DAC output signal has switching noise on it so is it even good idea?
Also I realize that the DAC output signal has switching noise on it so is it even good idea?