a2dp sink cant't connect to 20719 a2dp source

[lei]

I tested 20719 audio_watch demo.

It can be successfully paired and connected with Bluetooth speakers.

However, when the Bluetooth speaker initiates a connection to 20179 (such as automatic reconnection when starting up), it is always unsuccessful.

There should be L2CAP connection request after "HCI_Encryption_Change", but in fact there is nothing.

Attach hci trace files, from BTSPY

[AnjanaM_61]

HI @lei 

Can you please let us know the steps you follow to reproduce this issue? Are you using default watch example or modified one ? 

Can you also provide us the details about the Bluetooth speaker which you are using?

Regards,

Anjana

[lei]

HI

I used default watch example.

Use ClientControl discovery BR/EDR - AV Source connect -  Disconnect -  Restart the Bluetooth speaker to automatically connect to the previous device - Can't connect

702--Self developed product, A2DP sink based on Qualcomm qcc3007 chip(connect to mobile phone OK)

MI18--Xiaomi Xiao ai Bluetooth speaker

Airpods has another problem，L2CAP connect successful but "SET CONFIGURATION" rejected.

[AnjanaM_61]

Hello @lei 

Sorry the thread was in a Locked state & we missed your thread. 

Can you please let us know which BTSDK version you are using? We tried Watch example with Airpods on latest BTSDK version (4.2) in MTB 3.0 & it is working fine. 

Regards,

Anjana