CC2564MODA: BLE bonding issue after an A2DP connection

Mickael Ben soussan

Part Number: CC2564MODA

Hi TI team,

I'm working on the BLE pairing process of my application (using Bluetopia stack) and for now, all is working great. Here is my connection / Pairing process :

Mobile central connect to my device.
When Mobile read/write a characteristic, we initiaite the bonding process (pairable mode : EnableSecureSimplePairing) and store the IRK (Like this we can indentify a device LE address as resolvable)

Sometimes, the BLE bonding blocked after the event callback latPairingStatus (which return success btw) and I can't read/write my characteristics (it looks likes the GATT server callback is not accessed anymore). I have to disconnect and reconnect BLE to access my characteristics.

The problem occurs each time i connect in A2DP through smarthpone settings before initiate the BLE bonding.

I captured the fw logs of the CC2564MODA through the Logger app.

Here is the step i made :

Connect audio through the android settings
Connect ble through the app Nrf connect
Read a characteristic to initiate bonding

Thanks in advance =)

bondingIssue.txt

over 7 years ago

0 Hari Nagalla over 7 years ago

TI__Mastermind 27470 points

Hi,

Can, you send us the 'lgr' file to review..

Thanks

0 Mickael Ben soussan over 7 years ago in reply to Hari Nagalla

Prodigy 140 points

Hi Nagalla,

Sorry, I thought i can only saved the log into txt file.

Here is the lgr file :

(I was not able to upload from the "insert file" button so i transmit it through my google drive).

Hope it will help.

Thanks

0 Hari Nagalla over 7 years ago in reply to Mickael Ben soussan

TI__Mastermind 27470 points

For capturing logs, Please follow the instructions here:

http://processors.wiki.ti.com/index.php/CC256x_Logger_User_Guide#Capturing_the_logs

Which, Android version are you using? In the past, we have seen some issues with ( LE using public address for advertising. )

Thanks

0 Mickael Ben soussan over 7 years ago in reply to Hari Nagalla

Prodigy 140 points

Hi,

I already sent you the log from logger (in .lgr format) in the previous answer...

I'm using Android 8.0.0 for my test and i'm not advertising with public address but with random.

Hope it helps.

Thanks.

0 Hari Nagalla over 7 years ago in reply to Mickael Ben soussan

TI__Mastermind 27470 points

The FW logs looks ok.. I guess, you may be using Bluedroid Bluetooth stack. Since, it is a GATT server issue, please check in the stack taking BT snoop logs.. The controller is as such transparent to GATT profile..

Thanks

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CC2564MODA: BLE bonding issue after an A2DP connection