Implementing FRS on G474

[AgoDream]

Dear ST Community

        I recently purchased two sets of Nucleo-DRP1M1+NucleoG474, and now I want to implement FRS functionality on these two boards. Currently, I have set one of the default power roles to Source, enabled FRS_TX, and the other to Sink. After connecting the two devices together, FRS switching cannot be triggered, and when I was debugging on the Sink side, I found that the FRS interrupt in the code on the Sink side is in a blocked state, and I don't know how to turn it on.

        Best regards.

I added the FRS macro definition, but there is a function error inside that I cannot find

[Imen.D]

Hello @AgoDream 

I advise you to follow this article : How to manage fast role swap (FRS) in an STM32 - STMicroelectronics Community

This will help you on the management and implementation of FRS.

[AgoDream]

Thank you very much for your reply. I have also carefully read the other article you provided.My DRP_Sink character sent an FR_Swap message, but DRP_Source does not support it.

The one above is DRP_Sink

The one above is DRP_Source

[FBL]

Hi @AgoDream 

Did you check the definition of your PDO in usbpd_pdo_defs.h and in your usbpd_dpm_conf.h

[AgoDream]

Hello, I have checked the definition of PDO and it supports FRS. My code was directly generated using STM32CubeMX

[FBL]

Would you share your IOC file?

[AgoDream]

Thank you,This is my IOC file.