BLE Audio Gateway Selection using MAC

[edmcnicholas]

Hello,

I am attempting to do out of band gateway selection for ble audio BIS.  I see in the sink project you can cycle through gateways but I am looking for a more deliberate way to select a gateway.  I was planning on using the device NFC to transfer the data out of band from the source to the sink. I already have the demo running and i am able to transfer data and change devices but I am not looking to start productization.  I looked through the code and it all seemed a bit too abstracted for deliberate selection of a source.  Any help would be appreciated.

Thanks

Ed

[Amanda Hsieh]

Hi, 

I am working on your case and will reply later. 

Regards,
Amanda H.

[Amanda Hsieh]

Hi, 

Are you going to work on a BIS proprietary solution and the sink side uses the MAC address to get sync with the specific broadcaster and also be able to switch to a different broadcaster? If so, that's doable. 

-Amanda H.

[edmcnicholas]

That would be the idea. The design would be a closed system with nrf5340 on both sides.  The potential is many units in one system so we need deliberate broadcast selection for the sinks.

[Amanda Hsieh]

Hi, 

The default demo scenario is very close to your requirement. Now a headset can switch between two gateways, by checking the device name.
Ref: https://github.com/nrfconnect/sdk-nrf/blob/a0ee1d981009e021d77ab586654123db02e1034b/applications/nrf5340_audio/src/bluetooth/le_audio_bis_headset.c#L200

And the key is in here, we can change the checking mechanism from ADV name to MAC address
https://github.com/nrfconnect/sdk-nrf/blob/a0ee1d981009e021d77ab586654123db02e1034b/applications/nrf5340_audio/src/bluetooth/le_audio_bis_headset.c#L200

It can get the MAC address from bt_le_scan_recv_info *info in scan_recv_cb(). 

-Amanda H.

[edmcnicholas]

ok i will look into that thanks.  It looks like that is the correct area to modify.