State of GPIO lines before loading program to flash - STM32F4

2 replies
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Hi,

I wonder in which state are the GPIO lines of STM32F407VG BEFORE loading program to flash memory.

Thanks :)

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Peter BENSCHBest answer

ST Technical Moderator

This depends on the GPIO port: Please check the relevant section GPIO registers in the reference manual for the respective family.

You will find the reset values of GPIOx_MODER, GPIOx_PUPDR etc, which are active until changed by the initialization.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

Peter BENSCHBest answer

ST Technical Moderator

This depends on the GPIO port: Please check the relevant section GPIO registers in the reference manual for the respective family.

You will find the reset values of GPIOx_MODER, GPIOx_PUPDR etc, which are active until changed by the initialization.

Regards

/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.

bmakAuthor

Senior

Thanks! I had no idea where to look for the answer :).

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