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JBlackann
Associate III
Feb 10, 2021 9:43 PM UTC
Solved

State of GPIO after Watchdog Reset

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

This topic has been closed for replies.
Uwe Bonnes
Uwe BonnesBest answer
Chief
Feb 10, 2021 10:20 PM UTC

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

1 reply

Uwe Bonnes
Uwe BonnesBest answer
Chief
Feb 10, 2021 10:20 PM UTC

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