I see that the Cobra board has the EMX driving the Piezo directly from an IO pin (10).
What is the maximum current each IO pin can drive?
Investigating, I see the CPU datasheet (not the EMX one) states:
IOLS LOW-level short-circuit output current VOL = VDDA - - 50 mA
So… can all pins drive up to 50mA, or am I way off here?
Typically I’d drive a transistor and have that switch an output but I’m wondering if this board has great drivers and I don’t need to…