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Associate III
December 10, 2025
Question

STM32WBA55G-DK1 Auracast Channel issue

  • December 10, 2025
  • 6 replies
  • 821 views

Hello,

I have created two BIS channels eng and esp, under BIG main group by assigning bis[0] and bis[1] and given left and right channel as the input. At the receiver side, the first channel [0] will perfectly get connect and displays "synced with some freq as assigned" but for the second one it doesnt like that and no data is streaming. How to correct the issue.

 

Kindly do the needful.

Thank you

6 replies

ST Employee
December 12, 2025

Hi Sandeep,

I don't manage to retrieve you pbp_app.c to see how you implemented that. However, I invite you to take a look at our new Github hotspot project: https://github.com/stm32-hotspot/STM32WBA-Advanced-BLE-Broadcast-Speaker regarding your issue. The project contains 2 STM32WBA55G-DK1/STM32WBA65I-DK1 projects with multiple languages in one BIG along with instructions on how to replicate the demo.

Best Regards,

Tom.

Sandeep_kAuthor
Associate III
December 15, 2025

Thank you for response sir. 

Have a look at the below firmware, I am trying to broadcast the data by creating 2 bis/subgroups each carries each song but at the receiver side, I am getting combined data for first channel and no data in the second. Kindly help me to solve this out.

 

Thank you

Sandeep_kAuthor
Associate III
December 15, 2025
Sandeep_kAuthor
Associate III
December 16, 2025

The issue is resolved sir. All this I was trying with windows. For a change I tried the same in ubuntu. Its working fine.

 

But what may be the issue.

 

Thanks and regards

Sandeep Kumar K

ST Employee
December 16, 2025

Hi Sandeep,

What do you mean when you say you tried with Ubuntu ? You used a Ubuntu PC as an audio source connected to the DK through the 3.5mm jack ?

Depending on the audio settings, the OS can sometimes slightly mix the left and right channel, we explain how to disable that on Windows in our github example. However that doesn't explain why you wouldn't have audio on the second BIS so I'm not sure exactly what's going on here...

Regards,

Tom.

Sandeep_kAuthor
Associate III
December 16, 2025

Thank you for the response sir,

Can I get solution for this query https://tinyurl.com/53ca48jp