When should I call chip::DeviceLayer::SetDeviceInfoProvider?

[Tom McGuinness]

Hi,

I'm working through building my own Matter device. Building on MacOS, VSCode on 2.7.0. I'm using an nrf52840DK for now.

I have two endpoints that contain a temperature measurement and that is working well. 

Next I want to name those endpoints. I know this won't work with iOS HomeKit, but it should work with Home Assistant's matter implementation.

I've cloned the sample DeviceInfoProvider from the connectedhomeip examples - /connectedhomeip/examples/all-clusters-app/nrfconnect/third_party/connectedhomeip/examples/providers

I add a call to SetDeviceInfoProvider into the AppTask::Init(), but I'm not sure if that's in the right place.

CHIP_ERROR AppTask::Init()

{

/* Initialize Matter stack */

ReturnErrorOnFailure(Nrf::Matter::PrepareServer());

/* Register the DeviceInfoProvider */

chip::DeviceLayer::SetDeviceInfoProvider(&gDeviceInfoProvider);

if (!Nrf::GetBoard().Init())

{

LOG_ERR("User interface initialization failed.");

return CHIP_ERROR_INCORRECT_STATE;

}

Do you have any guidance?

[Marte Myrvold]

Hi,

I've cloned the sample DeviceInfoProvider from the connectedhomeip examples - /connectedhomeip/examples/all-clusters-app/nrfconnect/third_party/connectedhomeip/examples/providers

I would recommend using the samples in the nRF Connect SDK instead of the connectedhomeip repository. You can find documentation for the samples here: Matter samples and the code here: https://github.com/nrfconnect/sdk-nrf/tree/v2.7.0/samples/matter.

By naming the endpoints, do you mean tagging the endpoint with a label using the User Label cluster? If so, you should instead add the User Label cluster to your application and use this for tagging the endpoints. You can read how to add clusters in our Adding clusters to Matter application guide.

Best regards,
Marte

[Tom McGuinness]

I will review the nRF samples. I just didn't see any obvious use of the SetDeviceInfoProvider call.

I'm hoping to use the FixedLabel rather than the user label and that cluster is already present.

[Marte Myrvold]

Hi,

If you do not want the user to set the label and it should be set by a manufacturer or bridge device, then the Fixed Label cluster or the TagList in the Descriptor cluster are your best options.

Please do not hesitate to ask if you have any issues implementing or using either of these options!

Best regards,
Marte