Confirmed suart.S(both xmit and rcvr) works on debug pins.
pull-up resister needed?
Debug pins should be initialized as input with pull-up and output Hi. Without pull-up it works well when signal lines are connected. What if lines are open, unpluged or repluged? Having pull up on the lines is safe?
It will work without pull-ups but it looks safe with them.
Have pull-up resistor pads if possible
Confirmed suart.S(both xmit and rcvr) works on debug pins.
pull-up resister needed?
Debug pins should be initialized as input with pull-up and output Hi. Without pull-up it works well when signal lines are connected. What if lines are open, unpluged or repluged? Having pull up on the lines is safe?
It will work without pull-ups but it looks safe with them. Have pull-up resistor pads if possible