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JBlackann
Associate III
February 10, 2021
Solved

State of GPIO after Watchdog Reset

  • February 10, 2021
  • 1 reply
  • 1064 views

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.
Best answer by Uwe Bonnes

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
February 10, 2021

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