STM32MP257 M33 with Freertos & OpenAmp

[Hs26]

Hi everyone,

I am working on the STM32MP257-EVAL board, where my Cortex-M33 application requires both FreeRTOS and OpenAMP middleware to run together.

After referring to the STM32CubeMPU packages, I found separate example projects:

• One for FreeRTOS

• One for OpenAMP (running in bare-metal environment)

I tried combining both examples into a single application. The FreeRTOS part is working correctly, but OpenAMP hangs during initialization.

After debugging, I noticed that libmetal is getting compiled for the generic platform instead of the FreeRTOS platform. To address this, I changed the toolchain configuration from:

-DCMAKE_TOOLCHAIN_FILE=cmake/platforms/stm32mp-generic-gcc.cmake

to:

-DCMAKE_TOOLCHAIN_FILE=cmake/platforms/stm32mp-freertos-gcc.cmake

However, this results in multiple compilation errors. It seems the provided libmetal port may not be fully compatible with the FreeRTOS platform setup.

Has anyone successfully integrated FreeRTOS + OpenAMP together on STM32MP257 (M33 core)?
Are there any reference projects, application notes, or examples available for this combined use case?

Any guidance would be greatly appreciated.

Thanks.

[ArnaudP]

Hello,

You can review the  the  USBPD_DRP_UCSI project

The openamp thread is initialized here:
https://github.com/STMicroelectronics/STM32CubeMP2/blob/main/Projects/STM32MP257F-EV1/Applications/USBPD/USBPD_DRP_UCSI/CM33/NonSecure/FREERTOS/App/app_freertos.c#L221

The OpenAmp thread is managed here
https://github.com/STMicroelectronics/STM32CubeMP2/blob/main/Projects/STM32MP257F-EV1/Applications/USBPD/USBPD_DRP_UCSI/CM33/NonSecure/OpenAMP/Src/openamp_thread.c

Regards,

Arnaud

[Hs26]

That seems promising let me try and get back to you , Thanks a Lot.