How to change matter example descriminator/setup pin code

RE: How to change matter example descriminator/setup pin code

Marte Myrvold — Tue, 13 Aug 2024 13:54:47 GMT

Hi,

Great to hear that you solved the issue with the QR code!

[quote user="waqarrashid33"]Any idea how to do the ACL stuff in the google eco system. I now want to bind the switch and bulb.[/quote]

Unfortunately, Google and many other commercial ecosystems do not currently support binding. Instead, you can set up an automation that controls the light when the light switch is pressed.

Best regards,
Marte

RE: How to change matter example descriminator/setup pin code

waqarrashid33 — Tue, 13 Aug 2024 12:54:59 GMT

Thanks for the answer. So just changing these parameters in Kconfig or prj.conf files were not enough. Somehow it was not generating the new factory data. I deleted the build directory and was able to get the device have the new factory data, including the QR code which was visible on the uart.

Any idea how to do the ACL stuff in the google eco system. I now want to bind the switch and bulb.

RE: How to change matter example descriminator/setup pin code

Marte Myrvold — Tue, 13 Aug 2024 11:59:52 GMT

Hi,

[quote user=""]Edit 1: docs.nordicsemi.com/.../nrfconnect_factory_data_configuration.html[/quote]

This is the correct way to configure the discriminator and passcode.

[quote user=""]The descriminator change seems to take effect and I see the new value on uart of the device but the passcode remains the same and the QR-Code also remains the same.[/quote]

You can generate a new QR code using chip-tool:

./chip-tool payload generate-qrcode [--existing-payload] [--discriminator] [--setup-pin-code] [--version] [--vendor-id] [--product-id] [--commissioning-mode] [--allow-invalid-payload] [--rendezvous] [--tlvBytes]

For example:

$ ./chip-tool payload generate-qrcode --discriminator 1234 --setup-pin-code 13243546 --vendor-id 0x123 --product-id 0x123
[1723550244.756316][2136306:2136306] CHIP:TOO: QR Code: MT:GWQS0POG02A48B1OA00

So from this we get the manual pairing code MT:GWQS0POG02A48B1OA00, which corresponds to the QR code found here: https://project-chip.github.io/connectedhomeip/qrcode.html?data=MT%GWQS0POG02A48B1OA00.

Best regards,
Marte