Matter Door Lock Controller example

[BertL]

We are considering to develop an embedded device that can control Matter door locks. So it should act as a Matter Door Lock client. Unfortunately it is impossible to find any examples doing this, all the available examples are based on Matter Door Lock servers.

If we check the Project-Chip repository (https://github.com/project-chip/connectedhomeip/tree/master/src/controller), we can find controller implementations for iOS, Android, Posix, Darwin and Python. However we are looking for a zephyr-based C implementation. 

Does a Matter Door Lock client example exists? Or will it be available in the future? Or are Matter controller implementations not possible on Nordic MCU's and do we need more powerful hardware?

Hope you can give us a bit of insight if a project like this would be possible at all. Thanks in advance!

[Amanda Hsieh]

Hi, 

Unfortunately, we do not have the out-of-the-box example. You would need to use the Template sample and enable the Door Lock client cluster by yourself.

One challenge might be to find the proper Device ID of the Door Lock, which can be solved in a few ways. Could you elaborate on more details of your use case?

Regards,
Amanda H.

[BertL]

Thanks Amanda for your response! An example use case would be a fully matter enabled keypad, that can send unlock-door commands with a pin-code to configured node ids.

How to configure these node ids is indeed not clear yet, it seems that the Matter Documentation about a Door Lock Controller doesn't say anything about it. That's why I'm looking for examples ;)

[Amanda Hsieh]

Do you want to use both the Matter Door Lock and Matter Door Lock controller with the commercial ecosystem? 

If yes, then it’s the controller that must bind the Matter Door Lock to the Matter Door Lock controller. Currently, this is possible on both Android and iOS, but only if you create a custom app. Neither the Apple Home app nor the Google Home app supports binding by default.

Here is an interesting blog post from Eve: https://matter-smarthome.de/en/products/matter-bindings-in-action-eve-thermo-control/

Node IDs are allocated randomly during the commissioning process.

[BertL]

Thanks, that's useful information. We indeed want to use commercial Matter ecosystems, but it is no problem to create a custom app to support this. I also see that Home Assistant already merged support for creating the bindings:

https://github.com/matter-js/python-matter-server/pull/1155

Then the main concern is still the lack of samples. I'm familiar with the template sample and the zap-tool to enable the clusters I need. However just enabling the Door Lock client cluster, doesn't give me the functions I need to send an unlock command somewhere.

Is there any information available somewhere?