About CTaba.1

CTaba.1 · 2021-05-10

I'm using an stm32f429ni, which has 4 GPIOs in Backup Domain, namely PC13, PC14, PC15, PI8.Can these GPIOs be configured for example as output and retain their value during resets?The STM32F427xx STM32F429xx processor manual (DocID024030) is not very...

CTaba.1 · 2021-05-10

Thanks,Claudio

CTaba.1 · 2021-05-10

Thanks,Tesla DeLorean (nice nickname by the way :grinning_face:)your post replies to the question, I have to add an external flip/flop if I wish to retain output during STM32 reset.Claudio

CTaba.1 · 2021-05-10

Maybe there is a misundertanding here. I don't want to change alternate function of OSC pins.I really don't understand your suggestions. The GPIOs I mentioned in the first post (PC13, PC14, PC15, PI8) should mantain the configured value during reset ...

CTaba.1 · 2021-05-10

The board has both XTALs populated (8Mhz OSC and 32.768KHz OSC32), HSE and LSE are both enabled and RTC source is set to LSE.GPIO PC13 is working but it's value is not retained ad reset.Claudio

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How to use Backup Domain GPIOs? Can these GPIOs be configured as outputs and retain their value during resets?

Re: How to use Backup Domain GPIOs? Can these GPIOs be configured as outputs and retain their value during resets?

Re: How to use Backup Domain GPIOs? Can these GPIOs be configured as outputs and retain their value during resets?

Re: How to use Backup Domain GPIOs? Can these GPIOs be configured as outputs and retain their value during resets?

Re: How to use Backup Domain GPIOs? Can these GPIOs be configured as outputs and retain their value during resets?