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CC2564MODA: How to get the voice call audio output on the BT controller instead of host while using assisted HFP

Srinija Nandibhatla
Prodigy 10 points

Part Number: CC2564MODA
Other Parts Discussed in Thread: CC2564C

I'm using CC2564MODA bluetooth module and bluez 5.50 stack.

I have successfully loaded the AVPR add on script.

But when I make a phone call the audio is still routed on the host instead of BT controller.

Please help me in routing the audio to the BT controller.

Thanks Srinija.

  • 0
    TI__Expert 3161 points

    Hi Srinija, 

    We do not natively support the BlueZ stack--we support Bluetopia and BluetopiaPM as our BT stacks. 

    What host are you using in your design?

    Best,

    -Ryan

  • 0 in reply to Ryan T
    Prodigy 10 points

    We are using imx6dl as host and Hero chip as audio codec.

    As we are loading AVPR bts our requirement is the audio should be routed directly from the BT controller to the audio codec.

    It is routed to the audio codec after adding the HCI_VS_Write_CODEC_Config configurations but we are getting noise in the audio. can you provide the proper codec configurations.

    Thanks,

    Srinija.

  • 0 in reply to Srinija Nandibhatla
    TI__Expert 3161 points

    Hi Srinija,

    Please know that TI does not officially support BlueZ, as it is an open-source stack. Having said that, please try the following--it may work:

    1. Use the TIInit_6.12.26.bts from this git to initialize the CC2564C using the hciattach

    2. Once initialized, load the initscripts-TIInit_6.12.26_avpr_add-on.bts to the CC2564C to enable AVPR

    You can convert the contents of the *avpr_add-on.bts into "hcitool cmd" format using the BTSTransform and load the avpr add on from the command line. 

    Please let me know if there any discrepancies between what I have described and what you have been doing. Again, we do not natively support this stack. 

  • 0 in reply to Ryan T
    TI__Expert 3161 points

    For more information, please take a look at the CC256x Service pack user's guide and the AVPR add-on section: CC256x Service Pack User's Guide.pdf