Matter NXP Lighting Example Application#

This reference application implements an On/Off Light device type. It uses board buttons or matter-cli for user input and LEDs for state feedback. You can use this example as a reference for creating your own application.

The example is based on:

Supported devices#

Introduction#

The application showcases a light bulb device that communicates with clients over a low-power, 802.15.4 Thread network.

It can be commissioned into an existing Matter network using a controller such as chip-tool.

This example implements a User-Intent Commissioning Flow, meaning the user has to press a button in order for the device to be ready for commissioning. The initial commissioning is done through ble-thread pairing method.

The Thread network dataset will be transferred on the device using a secure session over Bluetooth LE. In order to start the commissioning process, the user must enable BLE advertising on the device manually. To pair successfully, the commissioner must know the commissioning information corresponding to the device: setup passcode and discriminator. This data is usually encoded within a QR code or printed to the UART console.

Device UI#

The example application provides a simple UI that depicts the state of the device and offers basic user control. This UI is implemented via the general-purpose LEDs and buttons built in the evaluation boards. Please see each supported device readme file for details.

Prerequisites for building#

In order to build the example, it is recommended to use a Linux distribution. Please visit the supported Operating Systems list in BUILDING.md.

  • Make sure that below prerequisites are correctly installed (as described in BUILDING.md)

sudo apt-get install git gcc g++ pkg-config libssl-dev libdbus-1-dev libglib2.0-dev libavahi-client-dev ninja-build python3-venv python3-dev python3-pip unzip libgirepository1.0-dev libcairo2-dev libreadline-dev

  • Step 1: checkout NXP specific submodules only

    user@ubuntu:~/Desktop/git/connectedhomeip$ scripts/checkout_submodules.py --shallow --platform nxp --recursive

  • Step 2: activate local environment

    user@ubuntu:~/Desktop/git/connectedhomeip$ source scripts/activate.sh

    If the script says the environment is out of date, you can update it by running the following command:

    user@ubuntu:~/Desktop/git/connectedhomeip$ source scripts/bootstrap.sh

  • Step 3: Init NXP SDK(s)

    user@ubuntu:~/Desktop/git/connectedhomeip$ third_party/nxp/nxp_matter_support/scripts/update_nxp_sdk.py --platform common

Note: By default, update_nxp_sdk.py will try to initialize all NXP SDKs. Please run the script with arg --help to view all available options.

Building#

There are two options for building this reference app:

  • Using build_examples.py framework.

  • Manually generating ninja files using gn.

For manual generation and building, please see the specific readme file for your device.

A list of all available contact sensor targets can be viewed in the following table:

target name

description

nxp-device-freertos-lighting

Default lighting app

nxp-device-freertos-lighting-factory

Default lighting app with factory data

nxp-device-freertos-lighting-rotating-id

Lighting app with rotating device id support

nxp-device-freertos-lighting-factory-dac-conversion

Lighting app that leverages a secure enclave to secure the DAC private key

nxp-device-freertos-lighting-sw-v2

Lighting app with software version 2 (can be used to test OTA)

nxp-device-freertos-lighting-factory-sw-v2

Lighting app with factory data and software version 2 (can be used to test OTA)

where device can be one of the Supported devices.

Data model#

The application uses an NXP specific data model file:

path

description

zap/lighting-on-off.zap

Data model for On/Off Light device type

The data model can be changed by simply replacing the gn deps statement corresponding to data model target.

Manufacturing data#

Use chip_with_factory_data=1 in the gn build command to enable factory data.

For a full guide on manufacturing flow, please see Guide for writing manufacturing data on NXP devices.

Flashing and debugging#

Please see the device specific readme file.