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CC2564C: Delay in Audio state transition in AVRCP

Mani srinivas
Intellectual 300 points
Part Number: CC2564C

Hi,

I using AVRCP commands for play music, pause music. etc., everything is working fine (music will play and pause happening fine )but I observed a delay in the audio state transition event.

When music is playing, if sending PAUSE command from SendPassthrough() commands function, an AUD_state_tranistion event will occur, the event occurring after 4 seconds. I have tried with many phones, same result. 
In my project, I'm controlling Music using a single push button like on single press music will play and on single press music will pause.

These are some info related to my project

1. STM32F412CE controller

2. A2DP 1.2 -Sink -Blutopia stack

3. AVRCP 1.4 - command used AVRCP_PASS_THROUGH_ID_PAUSE

4.  SDK was ported into this

best regards&thank you

Mani

  • 0
    TI__Genius 10550 points

    Hi Mani, 

    Thanks for sharing this. Can you please elaborate on how the delay is measured? Have you used a BT air sniffer to check the AVRCP command for pause and estimate the delay between the command and ack? If yes, please share us the air sniffer captures to take a look at the same. 

    Regards, 

    Sudharshan K N