How to use nRF Thread Topology Monitor with Matter examples?

[Mateusz Gancarczyk]

Hi,
Is it possible to use nRF Thread Topology Monitor with Matter examples?
Or maybe there is other way to visualize matter over thread network?

[Marte Myrvold]

Hi,

You can use the nRF Thread Topology Monitor to monitor the Thread network for Matter over Thread devices. We do not have any way to visualize the Matter fabric itself other than what is available in commercial ecosystems such as Google Home or Apple Home.

Best regards,
Marte

[Mateusz Gancarczyk]

Ok thanks. I try to use this tool but without success. I flashed nRF52840 usb dongel correctly, but I can't see in viewer nothing more than this dongle.

Base on matter light bulb example there is some information about network:

But where I can find Network Master Key?

[Marte Myrvold]

Hi,

This is the network key for the Thread network. How to find it depends on what you use as a border router. Are you using OTBR or a commercial ecosystem such as, for example, Google?

Best regards,
Marte

[Mateusz Gancarczyk]

Currently I'm using both: OTBR on RPi4 and Google Nest Hub 2.

[Marte Myrvold]

Hi,

Google provides API for Android or iOS to fetch Thread network credentials. See https://developers.home.google.com/thread.

For the OTBR, you can use the dataset active CLI command to get information about the network:

Alternatively, if you have a Nordic device with OpenThread shell enabled (CONFIG_OPENTHREAD_SHELL) that is already commissioned to the Thread network, you can use the ot dataset active command on the device. This method works with both Google Nest Hub and OTBR as the border router as long as the device is commissioned to the Thread network.

Best regards,
Marte