AzureRTOS (Threadx) USBPD support

[Softronic Solutions]

Dear all,

I'm working on an custom hardware project using the STM32G0B1 MCU running ThreadX.  My goal is to use/port the USBPD stack for both source as sink device, but I'm failing to do so partly because the stack provided is closed source.

The CubeMX skeleton code generated for my project does not offer a working solution and all example code nor documentation available is not targeting ThreadX.

Also I'm somewhat confused about which PD stack to use since X-CUBE-USB-PD is no longer recommended? Then what would be the alternative stack to use?

Does anyone have practical experience, can provide meaningful documentation or example code porting USBPD to ThreadX? I would be forever thankful.

Thanks and looking forward to your replies.

With regards,

Peter

[Imen.D]

Hello @Softronic Solutions,

This issue was fixed in the STM32CubeMX V6.13.0 by adding the Stack Port 0 Parameters and the User Port 0 Parameters panels to the Configuration field in the UI.

Thank you for your contribution and for having reported the point.

[Softronic Solutions]

Hi Imen.

Thanks for providing that CubeMX fix, I can again see and configure both USBPD ports.

There is however something I don't quite understand related to the use of both __USBPD_PWR_IF_C and __USBPD_DPM_CORE_C compiler switches.

I understand it allows you to switch between extern defined (in an object file) and local defined (in a .h file) variables.

But when defining those compiler switches so that the .h file defined variables are to be used the compiler complains about: multiple definition of `USBPD_NbPDO' , `PORT0_PDO_ListSRC', `PORT0_PDO_ListSNK', etc...

I guess the object file still includes those regardless of the compiler switch been defined.  Is that on purpose or am I missing the point here?

What should I do to be able to use the .h file defined variables?

Thank you for looking into this topic.

Peter

[FBL]

Hi Peter from @Softronic Solutions 

As moderators, we would recommend starting a new discussion to tackle another subject.

You need to check that the variables are defined only once. This should be done using the extern keyword. Here an example where all these PDOs should be defined in usbpd_pdo_defs.h