Matter : unable to de-commisioning a device

RE: Matter : unable to de-commisioning a device

zzebra83 — Thu, 06 Apr 2023 09:55:33 GMT

Nevermind, pairing onnetwork works fine when using latest revision from connectedhome.

RE: Matter : unable to de-commisioning a device

zzebra83 — Wed, 05 Apr 2023 08:11:37 GMT

i have tried that, but it seems it doesnt work if the device has been removed from fabric but not removed from thread network? the device is discoverable but pairing onnetwork doesnt work. maybe im doing something wrong, not sure yet. im using nordic light bulb example, and using the default setup pin code 20202021

RE: Matter : unable to de-commisioning a device

Marte Myrvold — Wed, 22 Mar 2023 12:28:11 GMT

Hi,

I asked the developers about this. There is no CHIP Tooll command to perform a factory reset. There is, however, a command called TestEventTrigger that allows triggering some custom behavior to the device from CHIP Tool, which can be used for debugging and testing purposes. This command is not implemented by default, so the firmware would have to be modified for this to work.

Since the device is still connected to the Thread network, you cannot pair it again using Bluetooth LE, but you can still pair it over IP. This can be done using the following CHIP Tool command:

chip-tool pairing onnetwork <node-id> <setup-pin-code>

Best regards,
Marte

RE: Matter : unable to de-commisioning a device

zzebra83 — Tue, 21 Mar 2023 11:15:32 GMT

Hi,

im using the Python CHIP controller from connected home, that basically sends a removeFabric command to the device(nordic light bulb example). upon receipt the device succesfully clears any fabric info it has. however it is still connected to the thread network vi OTBR so it has an address and can advertise itself on the network for discovery. however like i mentioned earlier, once the device is removed from the fabric, i am unable to pair it again.

RE: Matter : unable to de-commisioning a device

Franck-D — Tue, 21 Mar 2023 10:03:55 GMT

Hello zzebra83,

i'm just curious about witch version of chip-tool you use

github.com/.../chip-tool

https://github.com/nrfconnect/sdk-connectedhomeip/tree/master/examples/chip-tool

Thanks

RE: Matter : unable to de-commisioning a device

zzebra83 — Tue, 21 Mar 2023 09:42:27 GMT

yes thanks that works, i can remove the device from the matter controller fabric using that command. however after unpairing it, when i try to pair the device again, it doesn't work unless i do a factory reset of the device. that defeats the purpose of unpairing it via API

RE: Matter : unable to de-commisioning a device

Marte Myrvold — Tue, 21 Mar 2023 08:06:26 GMT

Hi,

Yes, you can use the unpair command

./chip-tool pairing unpair <node-id>

Best regards,
Marte

RE: Matter : unable to de-commisioning a device

zzebra83 — Wed, 15 Mar 2023 07:41:48 GMT

Hi Marte,

Im just curious, is there any way to decommision a device via the matter controller?

RE: Matter : unable to de-commisioning a device

Marte Myrvold — Thu, 02 Mar 2023 11:49:17 GMT

Hi Franck,

I am glad to hear that it worked, and thank you for sharing what you did to make it work!

Best regards,
Marte

RE: Matter : unable to de-commisioning a device

Franck-D — Thu, 02 Mar 2023 11:02:56 GMT

Hi Marte,

Thank you for your reply.

Now it works !

I had to re-compile the application with the option "CONFIG_CHIP_LIB_SHELL=y" in project.conf

To fully de-commisioning i had to do not only a matter command but the 2 belows:

> matter device factoryreset

> ot factoryreset

Best Regards,

Franck

RE: Matter : unable to de-commisioning a device

Marte Myrvold — Thu, 02 Mar 2023 10:29:51 GMT

Hi,

The Matter device should not be factory reset using the OpenThread CLI factory reset command, but instead, the Matter factory reset command:

matter device factoryreset

The OpenThread command will only reset the OpenThread part of the commissioning, not the entire Matter commissioning.
Please try the Matter command and let me know if you are having any issues when using this command.

Best regards,
Marte