Matter door lock using Bluetooth LE with Nordic UART Service

[BilalAliAhmad]

I am try to make Bluetooth LE with Nordic UART Service bondable in to pair with central, not requiring to enter pairing code again and again. 

I have set followings in prj.conf file but matter ble manager fails to start after adding these in config file:

CONFIG_BT_PRIVACY=y

CONFIG_BT_SMP=y

CONFIG_BT_BONDABLE=y

This is how I generally do to enable bonding with nRF connect but something is happening when used with Bluetooth LE Nordic UART Service used in Matter lock example. 

[Amanda Hsieh]

Hi, 

You can comment out bt_conn_auth_cb_register if you don't need the authenticated pairing.

Regards,
Amanda H.

[BilalAliAhmad]

I need a authenticated pairing but I want pairing to be bondable. 

[Amanda Hsieh]

The authenticated pairing callbacks (bt_conn_auth_cb) is to handle in the Passkey module. If you want to pair without a passkey, you can remove it. See Passkey enabled.

[BilalAliAhmad]

I want passkey but the point is if two BT devices are paired and bonded, device should not ask for passkey again. Right? But if I enable bondable config on matter door lock sample, BLE manager stops working. 

Generally, if perhipheral is paired with a cenrtal such as mobile if if you disconnected your phone from the peripheral and then reconnected, you could re-encrypt the link without pairing again. But if we reset the device and tried to reconnect, we needed to pair again. I want to enable bonding on matter door lock sample but it is not working. 

[BilalAliAhmad]

Amanda Hsieh This is the error I get when bonding is enabled with above config settings on matter door lock example:

These are settings enables in prj.conf

CONFIG_CHIP_NUS=y
CONFIG_BT_BONDABLE=y
CONFIG_BT_PRIVACY=y
CONFIG_BT_SMP=y
CONFIG_BT_SETTINGS=y

[BilalAliAhmad]

Amanda Hsieh any update on this please? 

[Amanda Hsieh]

Disabling bonding with CONFIG_BT_BONDABLE=n and CONFIG_BT_PRIVACY=n should fix this issue. Check my colleague's explanation in this post. 

[BilalAliAhmad]

Please try to understand my question, I want to enable bonding,  not disable it. 

[Amanda Hsieh]

I know, but Matter BLE services cannot support that as my colleague explained in that post.