Matter door lock using Bluetooth LE with Nordic UART Service

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Thu, 27 Feb 2025 14:39:27 GMT

Yes I tried last time by adding these config settings in prj.conf and application started crashing:

CONFIG_BT_ID_MAX=2

CONFIG_BT_BONDABLE=y

I think this commit is not part of ncs 2.7.0 as I am using ncs 2,7.0
https://github.com/nrfconnect/sdk-connectedhomeip/commit/5ae63841a525579afce2c6bb7abcf33692b07a4a

RE: Matter door lock using Bluetooth LE with Nordic UART Service

SubuMuthu — Thu, 27 Feb 2025 14:25:46 GMT

The above setting will go in to prj.conf. Add them to prj.conf, build and it should work,

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Wed, 26 Feb 2025 16:45:35 GMT

Yes I am using additional BLE service similar to NUS but I was only adding these to enable bonding and application was crashing.

CONFIG_BT_ID_MAX=2

CONFIG_BT_BONDABLE=y

I need to merge those changes into my local Zephyr repo to make these settings work. Right?

RE: Matter door lock using Bluetooth LE with Nordic UART Service

SubuMuthu — Wed, 26 Feb 2025 16:16:07 GMT

You are correct - Bonding can not be enabled for Matter BLE services. I thought you have additional BLE service like NUS. If so, suggest you to look at the below. I have bonding enabled for custom BLE service with Matter and it works.

nRF54L15 + SRAM + Crypto questions

https://github.com/nrfconnect/sdk-connectedhomeip/commit/5ae63841a525579afce2c6bb7abcf33692b07a4a

Obviously there is a mutual interest so appreciate hearing your findings.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Thu, 20 Feb 2025 16:40:56 GMT

it is doing same it simply crashes my application

Bonding cannot be enabled for Matter BLE services, as this makes it non-compliant with the Matter specification due to the requirement that a static random address shall be used for Matter BLE service advertising purposes.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

SubuMuthu — Wed, 19 Feb 2025 20:19:57 GMT

Not sure if you got the answers: Try

CONFIG_BT_ID_MAX=2

CONFIG_BT_BONDABLE=y

This was nordic recommendation to enable bonding for BLE + Matter applications.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

Amanda Hsieh — Fri, 22 Nov 2024 21:46:49 GMT

Please create a new support case for the latest issue. I will be out of the office for one week and cannot provide the support immediately.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Fri, 22 Nov 2024 15:10:05 GMT

This is not good for us. How can we bond BLE central devices to Matter enabled peripheral devices over BLE without bonding?

RE: Matter door lock using Bluetooth LE with Nordic UART Service

Amanda Hsieh — Thu, 21 Nov 2024 17:00:17 GMT

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

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Thu, 21 Nov 2024 16:44:24 GMT

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

RE: Matter door lock using Bluetooth LE with Nordic UART Service

Amanda Hsieh — Thu, 21 Nov 2024 16:42:47 GMT

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

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Thu, 21 Nov 2024 15:28:07 GMT

Amanda Hsieh any update on this please?

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Wed, 20 Nov 2024 15:30:48 GMT

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

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Wed, 20 Nov 2024 09:39:45 GMT

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.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

Amanda Hsieh — Mon, 18 Nov 2024 17:03:47 GMT

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.

RE: Matter door lock using Bluetooth LE with Nordic UART Service

BilalAliAhmad — Mon, 18 Nov 2024 14:35:39 GMT

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

RE: Matter door lock using Bluetooth LE with Nordic UART Service

Amanda Hsieh — Mon, 18 Nov 2024 14:31:31 GMT

Hi,

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

Regards,
Amanda H.