How to configure GPIO on STM32MP157A-DK1 board?

[djimel]

Hello everyone, I use the STM32MP157A-DK1 on my project but I have a problem

1- In the CubeMX, when you want to use a GPIO in output or input, why can not we select the context (cortex A7 or cortex M4)?

2- When you set a GPIO as an output or input to CubeMX and generate code for SW4STM32, the GPIO you defined is not automatically configured in main.c, can I know why? please

3- In SW4ST32 (main.c), when you manually set a GPIO and try to flash LEDs that you connect to the PG3 for example, no signal arrives on the PORT, did I make a mistake?

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[Olivier GALLIEN · Accepted solution]

Hi @djimel​ 

STM32CubeMX is not yet full feature for STM32MP1 and has a limitation today with configuration of GPIO not linked to a peripheral.

You have to manage it in USER SECTION of the Device Tree.

Take a look at https://wiki.st.com/stm32mpu/wiki/GPIO_device_tree_configuration for some useful information

Hope it help

Olivier

[djimel]

Thanks a lot, its work well now

I found test programme on this link:

https://wiki.st.com/stm32mpu/wiki/How_to_control_a_GPIO_in_userspace

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