State of GPIO after Watchdog Reset

[JBlackann]

Hello,

I am using a STM32F401CE and would like to use the independent watchdog to cause a reset if the device would lock up for some reason. I have an external chip which is being controlled via GPIO and SPI from the STM32F401. When a watchdog reset occurs, does the GPIO outputs all default to Off? Is there I could keep an I/O line high (SET) over a Watchdog reset? I would like to not reset the external device if a watchdog event occurred.

Thanks.

Josh

[Uwe Bonnes · Accepted solution]

Watchdog reset is like normal reset, setting all GPIO to default state. Only external pull cat set defined state.