• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 42 subscribers
  • Views 713 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

WLINK8 Bluetooth HCI commands audio streaming

DJ-NG
Genius 9355 points

Question on the Bluetooth module:

We discussed with customer about the possibility to transfer Raw A2DP audio data (so raw  sbc, mp3 or similar data) over I2S to an external DSP for decoding instead tranferring the data over UART to the ARM (AM335x) and forward from there.

Could you share the correct HCI commands to setup this streaming mode?

  • 0
    TI__Guru* 85400 points

    Hi,

    Is there any specific command that you are looking for?
    You can find most of the A3DP commands in: http://processors.wiki.ti.com/index.php/CC256x_VS_HCI_Commands

    Regards,
    Gigi Joseph.

  • 0 in reply to Joseph Gigi
    TI__Intellectual 2325 points

    Hi Team,

    thanks for looking into this and the answer. Unfortunately this doesn’t fully answer my question.

    Here the more precise question:


    We would like to enable not only SBC coded material via A2DP/A3DP channel, but also MP3/AAC/etc. In order to do this, the audio stream should be transferred UNdecoded via the PCM/I2S interface to an external DSP for decoding.  The question is, how to configure the A3DP Sink in a way, that the coded material is transfered via I2S to the DSP without running through the SBC decoder  (a kind of "pass-by-mode").

    Any recommendations?

    Thanks for your support

    Jens

     

  • 0 in reply to Jens96
    TI__Mastermind 32615 points

    Hi,

    If you are using Bluetopia stack, Please see the code defined under the flag DISABLE_AUDIO_SINK_AUDIO_PROCESSING, which should answer your question.