USBX on STM32WBA6

[NRedd.2]

Hello,

On CubeMX v6.14.1 and X-CUBE-AZRTOS-WB v6.2.0, I am not able to add a USB record/playback device.

This means that I cannot generate USB Device descriptors using CubeMX. 

Why is this not possible yet? What are the alternatives?

Best regards,

Navin

[NRedd.2]

Is there a planned upgrade for this package? Looks like X-Cube-AZRTOS-H7 is on v6.4.0 and this package is lagging behind.

[FBL]

Hi @NRedd.2 

Working on STM32WBA6, you should not point on X CUBE WB. Internal ticket is submitted to dedicated team (210018) 

Given that there haven't been any significant updates associated with the X-CUBE package, or directly impacting the functionality, it's unlikely that an upgrade will occur unless a major issue arises. Did you track any related issues?

You can manually select the Azure RTOS version without using CubeMX, as each X-CUBE package is associated with a specific Azure version by dev team.

[NRedd.2]

Hi @FBL,

Thank you for your response!

Is it not possible to add ThreadX using CubeMX anymore for STM32WBA6?

Even when I select manually, I do not see a recording or playback option. 

An option to select ThreadX is grayed out. What is your suggestion regrading manually selecting AzureRTOS version? It is not clear to me. 

May I ask why I cannot use X-CUBE-AZRTOS-WB here? Can you guide me on the workflow for WBA6 please?

[TPITEL]

Hi @NRedd.2,

A new GitHub Hotspot repository containing a USB Audio examples with USBX in standalone mode (without Azure RTOS) using the STM32WBA6 is currently under validation and should be released in a few weeks. It will include:

• A USB Audio Playback project on STM32WBA65I-DK1, which plays audio from a USB host on the discovery kit's jack output
• A USB Audio + BLE Auracast project on STM32WBA65I-DK1 and NUCLEO-WBA65RI, which plays audio from a USB host on a Bluetooth Auracast stream

Although it will not contain any USB Audio Record examples, you should be able to use these projects' USB descriptors as a base to build your own application.

Best Regards,

Tom.

[NRedd.2]

Hi @TPITEL,

Thank you very much for your quick response!

---

A USB Audio + BLE Auracast project on STM32WBA65I-DK1 and NUCLEO-WBA65RI, which plays audio from a USB host on a Bluetooth Auracast stream

---

This is indeed my goal! 

But I also want to use RTOS with it, preferably ThreadX due to USBX dependency. I am aware that there is a standalone mode, for such a complex application I would prefer RTOS instead of bare-metal.

Is that a possibility in CubeMX, or should I configure it manually? How can I track the status, when the project will be available?

Although it will not contain any USB Audio Record examples, you should be able to use these projects' USB descriptors as a base to build your own application.

 I have achieved this with Nucelo-H723 already, using an example project from NXP. The MEMS PDM mic in the project uses DFSDM peripheral to convert PDM to PCM. Hopefully, someday I will make it open source!

Best regards,

Navin

[TPITEL]

We never tried BLE Audio apps with ThreadX but it should be feasible. However I'm not sure CubeMX will correctly generate a ThreadX + BLE Audio app. It will probably be easier to start from an existing BLE Audio app (or from the future USB Audio + Auracast app) and integrate ThreadX.

According to the current planning, the STM32WBA6 USB Project should release 2 or 3 weeks from now, but that will depend on the validation process.

Best Regards,

Tom.

[NRedd.2]

Hi @TPITEL ,

Is there a sample example with any other RTOS?

Looking forward to trying out the example!

Best regards,

Navin

[TPITEL · Accepted solution]

We only deliver BLE Audio sample applications on bare-metal. If you are looking for a ThreadX sample application that uses USBX, you can use the Ux_Device_CDC_ACM app for NUCLEO-WBA65RI in the STM32CubeWBA firmware release. You can also find a FreeRTOS BLE example for NUCLEO-WBA55CG on GitHub Hotspot if you prefer another OS: https://github.com/stm32-hotspot/STM32WBA-BLE-HeartRate-FreeRTOS.

Best Regards,
Tom.

[TPITEL]

Hi @NRedd.2,

The STM32WBA6 USBX Class Audio has just been published on our Github STM32 Hotspot: https://github.com/stm32-hotspot/STM32WBA-BLE-USBx-Class-Audio. I hope it'll help you in your development.

Best Regards,

Tom.