GPIO outputs affected by wdog?

[gsosnow]

For the  MK22FN512CBP12R I want to configure some gpios as outputs to control some external chips. My question is if a watchdog reset occurs will these gpios revert to inputs? If so, is there any way to prevent this from occurring, since reverting to inputs could affect the control and state of the external chips?

[mjbcswitzerland · Accepted solution]

George

A watchdog reset causes the GPIOs to be set to their default states - most as inputs or default peripheral functions.

If you want the states to be held in a particular state when this happens you will need to use external pullup and pull-downs to control the required state.

Regards

Mark