| # Matter nRF Connect Light Switch Example Application |
| |
| The nRF Connect Light Switch Example demonstrates how to remotely control a |
| lighting devices such as light bulbs or LEDs. The application should be used |
| together with the |
| [lighting app example](../../lighting-app/nrfconnect/README.md). The light |
| switch uses buttons to test changing the lighting application example LED state |
| and works as a brightness dimmer. You can use this example as a reference for |
| creating your own application. |
| |
| <img src="../../platform/nrfconnect/doc/images/Logo_RGB_H-small.png" alt="Nordic Semiconductor logo"/> |
| <img src="../../platform/nrfconnect/doc/images/nRF52840-DK-small.png" alt="nRF52840 DK"> |
| |
| The example is based on |
| [Matter](https://github.com/project-chip/connectedhomeip) and Nordic |
| Semiconductor's nRF Connect SDK, and was created to facilitate testing and |
| certification of a Matter device communicating over a low-power, 802.15.4 Thread |
| network, or Wi-Fi network. |
| |
| The example behaves as a Matter accessory, that is a device that can be paired |
| into an existing Matter network and can be controlled by this network. In the |
| case of Thread, this device works as a Thread Sleepy End Device. Support for |
| both Thread and Wi-Fi is mutually exclusive and depends on the hardware |
| platform, so only one protocol can be supported for a specific light switch |
| device. |
| |
| <hr> |
| |
| ## Overview |
| |
| This example is running on the nRF Connect platform, which is based on Nordic |
| Semiconductor's |
| [nRF Connect SDK](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/index.html) |
| and [Zephyr RTOS](https://zephyrproject.org/). Visit Matter's |
| [nRF Connect platform overview](../../../docs/guides/nrfconnect_platform_overview.md) |
| to read more about the platform structure and dependencies. |
| |
| By default, the Matter accessory device has IPv6 networking disabled. You must |
| pair it with the Matter controller over Bluetooth® LE to get the configuration |
| from the controller to use the device within a Thread or Wi-Fi network. You have |
| to make the device discoverable manually (for security reasons). See |
| [Bluetooth LE advertising](#bluetooth-le-advertising) to learn how to do this. |
| The controller must get the commissioning information from the Matter accessory |
| device and provision the device into the network. |
| |
| You can test this application remotely over the Thread or the Wi-Fi protocol, |
| which in either case requires more devices, including a Matter controller that |
| you can configure either on a PC or a mobile device. |
| |
| The sample uses buttons for controlling the bound device's LEDs. You can test it |
| in the following ways: |
| |
| - Standalone, using a single DK that runs the light switch application. |
| |
| - Remotely over the Thread or the Wi-Fi protocol, which in either case |
| requires more devices, including a Matter controller that you can configure |
| either on a PC or a mobile device. |
| |
| In Matter, the following types of light switch devices are available: |
| |
| - Group 1: On/Off Light Switch, Dimmer Switch, Color Dimmer Switch, Control |
| Bridge |
| - Group 2: Generic Switch |
| |
| The first type (here referred to as Group 1) uses client application clusters |
| (for example, Level Control) and bindings to send commands to the server |
| clusters. This type of switch is on the endpoint 1 of this example. |
| |
| With the second type (Group 2), controllers can use event subscriptions to be |
| informed about changes on the switch server cluster. This type of switch is on |
| the endpoint 2 of this example. |
| |
| ### Group 1 light switch devices overview |
| |
| A light switch device is a simple embedded controller, which has the ability to |
| control lighting devices, such as light bulbs or LEDs. After commissioning into |
| a Matter network, the light switch device does not know what it can control. In |
| other words, it has no information about another device being connected to the |
| same network. You must provide this information to the light switch through the |
| process called binding, which links clusters and endpoints on both devices, so |
| that the devices can interact with each other. This functionality is on the |
| endpoint 1 and triggered by **Button 2**. |
| |
| ### Generic Switch |
| |
| The Generic Switch on the endpoint 2 offers the switch server cluster. It |
| implements the Momentary Switch (`MS`) and Momentary Switch Release (`MSR`) |
| features. For this reason, it sends event notifications `InitialPress` and |
| `ShortRelease` if **Button 3** of the DK is pressed and released. |
| |
| ### Common example settings |
| |
| The Matter device that runs the light switch application is controlled by the |
| Matter controller device over the Thread protocol. By default, the Matter device |
| has Thread disabled, and it should be paired with the Matter controller and get |
| configuration from it. Some actions required before establishing full |
| communication are described below. |
| |
| The example can be configured to use the secure bootloader and utilize it for |
| performing over-the-air Device Firmware Upgrade using Bluetooth LE. |
| |
| ### Bluetooth LE advertising |
| |
| In this example, to commission the device onto a Matter network, it must be |
| discoverable over Bluetooth LE. For security reasons, you must start Bluetooth |
| LE advertising manually after powering up the device by pressing: |
| |
| - On nRF52840 DK, nRF5340 DK, and nRF21540 DK: **Button 4**. |
| |
| - On nRF7002 DK: **Button 2**. |
| |
| ### Bluetooth LE rendezvous |
| |
| In this example, the commissioning procedure is done over Bluetooth LE between a |
| Matter device and the Matter controller, where the controller has the |
| commissioner role. |
| |
| To start the rendezvous, the controller must get the commissioning information |
| from the Matter device. The data payload is encoded within a QR code, printed to |
| the UART console, and shared using an NFC tag. The emulation of the NFC tag |
| emulation starts automatically when Bluetooth LE advertising is started and |
| stays enabled until Bluetooth LE advertising timeout expires. |
| |
| #### Thread or Wi-Fi provisioning |
| |
| The provisioning operation, which is the Last part of the rendezvous procedure, |
| involves sending the Thread or Wi-Fi network credentials from the Matter |
| controller to the Matter device. As a result, the device joins the Thread or |
| Wi-Fi network and can communicate with other devices in the network. |
| |
| ### Device Firmware Upgrade |
| |
| The example supports over-the-air (OTA) device firmware upgrade (DFU) using one |
| of the two available methods: |
| |
| - Matter OTA DFU that is mandatory for Matter-compliant devices. This option |
| is enabled by default. |
| - [Simple Management Protocol](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/guides/device_mgmt/index.html#device-mgmt) |
| over Bluetooth LE from Nordic Semiconductor's nRF Connect SDK. This is an |
| optional proprietary method that is not part of the Matter specification and |
| can be enabled to work alongside the default Matter OTA DFU. |
| |
| For both methods, the |
| [MCUboot](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/mcuboot/index.html) |
| bootloader solution is used to replace the old firmware image with the new one. |
| |
| #### Matter Over-the-Air DFU |
| |
| The Matter over-the-air DFU distinguishes two types of nodes: OTA Provider and |
| OTA Requestor. |
| |
| An OTA Provider is a node that hosts a new firmware image and is able to respond |
| on an OTA Requestor's queries regarding availability of new firmware images or |
| requests to start sending the update packages. |
| |
| An OTA Requestor is a node that wants to download a new firmware image and sends |
| requests to an OTA Provider to start the update process. |
| |
| #### Simple Management Protocol |
| |
| Simple Management Protocol (SMP) is a basic transfer encoding that is used for |
| device management purposes, including application image management. SMP supports |
| using different transports, such as Bluetooth LE, UDP, or serial USB/UART. |
| |
| In this example, the Matter device runs the SMP Server to download the |
| application update image using the Bluetooth LE transport. |
| |
| See the |
| [Building with Device Firmware Upgrade support](#building-with-device-firmware-upgrade-support) |
| section to learn how to enable SMP and use it for the DFU purpose in this |
| example. |
| |
| #### Bootloader |
| |
| MCUboot is a secure bootloader used for swapping firmware images of different |
| versions and generating proper build output files that can be used in the device |
| firmware upgrade process. |
| |
| The bootloader solution requires an area of flash memory to swap application |
| images during the firmware upgrade. Nordic Semiconductor devices use an external |
| memory chip for this purpose. The memory chip communicates with the |
| microcontroller through the QSPI bus. |
| |
| See the |
| [Building with Device Firmware Upgrade support](#building-with-device-firmware-upgrade-support) |
| section to learn how to change MCUboot and flash configuration in this example. |
| |
| <hr> |
| |
| ## Requirements |
| |
| The application requires a specific revision of the nRF Connect SDK to work |
| correctly. See [Setting up the environment](#setting-up-the-environment) for |
| more information. |
| |
| ### Supported devices |
| |
| The example supports building and running on the following devices: |
| |
| | Hardware platform | Build target | Platform image | |
| | ----------------------------------------------------------------------------------------- | -------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------ | |
| | [nRF52840 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF52840-DK) | `nrf52840dk_nrf52840` | <details><summary>nRF52840 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF52840_DK_info-medium.jpg" alt="nRF52840 DK"/></details> | |
| | [nRF5340 DK](https://www.nordicsemi.com/Software-and-Tools/Development-Kits/nRF5340-DK) | `nrf5340dk_nrf5340_cpuapp` | <details><summary>nRF5340 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF5340_DK_info-medium.jpg" alt="nRF5340 DK"/></details> | |
| | [nRF7002 DK](https://www.nordicsemi.com/Products/Development-hardware/nRF7002-DK) | `nrf7002dk_nrf5340_cpuapp` | <details><summary>nRF7002 DK</summary><img src="../../platform/nrfconnect/doc/images/nRF7002-DK_Front-small.png" alt="nRF7002 DK"/></details> | |
| |
| ### IPv6 network support |
| |
| The development kits for this sample offer the following IPv6 network support |
| for Matter: |
| |
| - Matter over Thread is supported for `nrf52840dk_nrf52840` and |
| `nrf5340dk_nrf5340_cpuapp`. |
| - Matter over Wi-Fi is supported for `nrf7002dk_nrf5340_cpuapp`. |
| |
| ### Additional requirements for testing |
| |
| If you want to test the Light Switch Example application with other devices, you |
| also need to flash and program the following examples using the compatible |
| development kits: |
| |
| - [Lighting Example Application](../../lighting-app/nrfconnect/README.md) |
| |
| Read the [CHIP Tool user guide](../../../docs/guides/chip_tool_guide.md) to |
| learn how to commission the lighting device to the same Matter network using the |
| CHIP Tool. |
| |
| <hr> |
| |
| ## Device UI |
| |
| This section lists the User Interface elements that you can use to control and |
| monitor the state of the device. These correspond to PCB components on the |
| platform image. |
| |
| ### LEDs |
| |
| This section describes all behaviors of LEDs located on platform image. |
| |
| **LED 1** shows the overall state of the device and its connectivity. The |
| following states are possible: |
| |
| - _Short Flash On (50 ms on/950 ms off)_ — The device is in the |
| unprovisioned (unpaired) state and is waiting for a commissioning |
| application to connect. |
| |
| - _Rapid Even Flashing (100 ms on/100 ms off)_ — The device is in the |
| unprovisioned state and a commissioning application is connected through |
| Bluetooth LE. |
| |
| - _Short Flash Off (950ms on/50ms off)_ — The device is fully |
| provisioned, but does not yet have full connectivity for Thread or Wi-Fi |
| network. |
| |
| - _Solid On_ — The device is fully provisioned. |
| |
| **LED 2** simulates the BLE DFU process. The following states are possible: |
| |
| - _Off_ — BLE is not advertising and DFU can not be performed. |
| |
| - _Rapid Even Flashing (30 ms off / 170 ms on)_ — BLE is advertising, |
| DFU process can be started. |
| |
| **All LEDs** |
| |
| Blink in unison when the factory reset procedure is initiated. |
| |
| ### Buttons |
| |
| This section describes a reaction to pressing or holding buttons located on the |
| platform image. |
| |
| **Button 1** can be used for the following purposes: |
| |
| - _Pressed for less than 3 s_ — Initiates the OTA software update |
| process. This feature is disabled by default, but can be enabled by |
| following the |
| [Building with Device Firmware Upgrade support](#building-with-device-firmware-upgrade-support) |
| instructions. |
| |
| - _Pressed for more than 3 s_ — initiates the factory reset of the |
| device. Releasing the button within the 3-second window cancels the factory |
| reset procedure. |
| |
| **Button 2** can be used for the following purposes: |
| |
| - On nRF52840 DK, nRF5340 DK and nRF21540 DK: |
| |
| - If pressed for less than 0.5 seconds, it changes the light state to the |
| opposite one on the bound lighting device |
| [lighting-app](../../lighting-app/nrfconnect/README.md) |
| |
| - If pressed for more than 0.5 seconds, it changes the brightness of the |
| light on the bound lighting bulb device |
| [lighting-app](../../lighting-app/nrfconnect/README.md). The brightness |
| is changing from 0% to 100% with 1% increments every 300 milliseconds as |
| long as **Button 2** is pressed. |
| |
| - On nRF7002 DK: |
| |
| - If the device is not commissioned to a Matter network, it starts the NFC |
| tag emulation, enables Bluetooth LE advertising for the predefined |
| period of time (15 minutes by default), and makes the device |
| discoverable over Bluetooth LE. This button is used during the |
| commissioning procedure. |
| |
| - If the device is commissioned to a Matter network, it controls the light |
| on the bound lighting device. Depending on how long you press the |
| button: |
| |
| - If pressed for less than 0.5 seconds, it changes the light state to the opposite one on the bound lighting device ([lighting-app](../../lighting-app/nrfconnect/)). |
| |
| - If pressed for more than 0.5 seconds, it changes the brightness of the light on the bound lighting bulb device ([lighting-app](../../lighting-app/nrfconnect/)). The brightness is changing from 0% to 100% with 1% increments every 300 milliseconds as long as **Button 2** is pressed. |
| |
| **Button 4** |
| |
| - On nRF52840 DK, nRF5340 DK and nRF21540 DK: |
| |
| Starts the NFC tag emulation, enables Bluetooth LE advertising for the |
| predefined period of time (15 minutes by default), and makes the device |
| discoverable over Bluetooth LE. This button is used during the commissioning |
| procedure. |
| |
| - On nRF7002 DK: |
| |
| Not available. |
| |
| **SEGGER J-Link USB port** can be used to get logs from the device or |
| communicate with it using the |
| [command line interface](../../../docs/guides/nrfconnect_examples_cli.md). |
| |
| **NFC port with antenna attached** can be used to start the |
| [rendezvous](#bluetooth-le-rendezvous) by providing the commissioning |
| information from the Matter device in a data payload that can be shared using |
| NFC. |
| |
| ### Matter CLI commands |
| |
| The Matter CLI allows to run commands via serial interface after USB cable |
| connection to Nordic Semiconductor's kit. |
| |
| To enable the Matter CLI, you must compile the Light Switch Example application |
| with the additional option **-DCONFIG_CHIP_LIB_SHELL=y**. Run the following |
| command with _build-target_ replaced with the build target name of Nordic |
| Semiconductor's kit you are using (for example, `nrf52840dk_nrf52840`): |
| |
| west build -b build-target -- -DCONFIG_CHIP_LIB_SHELL=y |
| |
| You can use the following commands to control a device that is programmed with |
| the Light Switch Example application by using the Matter CLI: |
| |
| uart:~$ switch onoff on : sends unicast On command to bound device |
| uart:~$ switch onoff off : sends unicast Off command to bound device |
| uart:~$ switch onoff toggle : sends unicast Toggle command to bound device |
| |
| You can use the following commands a group of devices that are programmed with |
| the Light Switch Example application by using the Matter CLI: |
| |
| uart:~$ switch groups onoff on : sends multicast On command to all bound devices in a group |
| uart:~$ switch groups onoff off : sends multicast Off command to all bound devices in a group |
| uart:~$ switch groups onoff toggle : sends multicast Toggle command to all bound devices in a group |
| |
| Check the [CLI user guide](../../../docs/guides/nrfconnect_examples_cli.md) to |
| learn how to use other CLI commands of the application. |
| |
| <hr> |
| |
| ## Setting up the environment |
| |
| Before building the example, check out the Matter repository and sync submodules |
| using the following command: |
| |
| $ python3 scripts/checkout_submodules.py --shallow --platform nrfconnect |
| |
| > **Note**: |
| > |
| > For Linux operating system install |
| > [SEGGER J-Link Software](https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack). |
| |
| ### Install Command Line Tools |
| |
| With admin permissions enabled, download and install the |
| [nRF Command Line Tools](https://www.nordicsemi.com/Products/Development-tools/nrf-command-line-tools). |
| |
| ### Install Toolchain Manager |
| |
| Toolchain Manager is available from |
| [nRF Connect for Desktop](https://www.nordicsemi.com/Products/Development-tools/nrf-connect-for-desktop), |
| a cross-platform tool that provides different applications that simplify |
| installing the nRF Connect SDK. Both the tool and the application are available |
| for Windows, Linux, and macOS. |
| |
| To install the Toolchain Manager app, complete the following steps: |
| |
| 1. [Download nRF Connect for Desktop](https://www.nordicsemi.com/Products/Development-tools/nrf-connect-for-desktop/download#infotabs) |
| for your operating system. |
| |
| 2. Install and run the tool on your machine. |
| |
| 3. In the **APPS** section, click **Install** button on the Toolchain Manager |
| tab. |
| |
| ### Install nRF Connect SDK |
| |
| Complete the following steps to install the nRF Connect SDK: |
| |
| 1. Open Toolchain Manager in nRF Connect for Desktop. |
| |
| 2. Click the **Install** button next to the |
| [recommended](../../../config/nrfconnect/.nrfconnect-recommended-revision) |
| version of the nRF Connect SDK. |
| |
| 3. A pop-up window will inform you about the current installation directory. If |
| you want to change the directory, click the **Change directory** button. |
| Otherwise, click the **Continue installation** button. |
| |
| 4. When the nRF Connect SDK is installed on your machine, the **Install** |
| button changes to the **Open VS Code** button. |
| |
| 5. Click the dropdown menu next to the **Open VS Code** button for the |
| installed nRF Connect SDK version, and select **Open terminal**. |
| |
| 6. Make sure that the nRF Connect SDK version is compatible with the Matter SDK |
| version: |
| |
| ``` |
| $ cd {connectedhomeip directory} |
| $ python3 scripts/setup/nrfconnect/update_ncs.py --update |
| ``` |
| |
| Now you can proceed with the [Building](#building) instruction. |
| |
| <hr> |
| |
| ## Building |
| |
| Complete the following steps to build the sample: |
| |
| 1. Navigate to the example's directory: |
| |
| $ cd examples/light-switch-app/nrfconnect |
| |
| 2. Run the following command to build the example, with _build-target_ replaced |
| with the build target name of the Nordic Semiconductor's kit you own, for |
| example `nrf52840dk_nrf52840`: |
| |
| $ west build -b build-target |
| |
| You only need to specify the build target on the first build. See |
| [Requirements](#requirements) for the build target names of compatible kits. |
| |
| The output `zephyr.hex` file will be available in the `build/zephyr/` directory. |
| |
| ### Removing build artifacts |
| |
| If you're planning to build the example for a different kit or make changes to |
| the configuration, remove all build artifacts before building. To do so, use the |
| following command: |
| |
| $ rm -r build |
| |
| ### Building with release configuration |
| |
| To build the example with release configuration that disables the diagnostic |
| features like logs and command-line interface, run the following command: |
| |
| $ west build -b build-target -- -DCONF_FILE=prj_release.conf |
| |
| Remember to replace _build-target_ with the build target name of the Nordic |
| Semiconductor's kit you own. |
| |
| ### Building with Device Firmware Upgrade support |
| |
| Support for DFU using Matter OTA is enabled by default. |
| |
| To enable DFU over Bluetooth LE, run the following command with _build-target_ |
| replaced with the build target name of the Nordic Semiconductor kit you are |
| using (for example `nrf52840dk_nrf52840`): |
| |
| $ west build -b build-target -- -DCONFIG_CHIP_DFU_OVER_BT_SMP=y |
| |
| To completely disable support for both DFU methods, run the following command |
| with _build-target_ replaced with the build target name of the Nordic |
| Semiconductor kit you are using (for example `nrf52840dk_nrf52840`): |
| |
| $ west build -b build-target -- -DCONF_FILE=prj_no_dfu.conf |
| |
| > **Note**: |
| > |
| > There are two types of Device Firmware Upgrade modes: single-image DFU and |
| > multi-image DFU. Single-image mode supports upgrading only one firmware image, |
| > the application image, and should be used for single-core nRF52840 DK devices. |
| > Multi-image mode allows to upgrade more firmware images and is suitable for |
| > upgrading the application core and network core firmware in two-core nRF5340 |
| > DK devices. |
| |
| #### Changing bootloader configuration |
| |
| To change the default MCUboot configuration, edit the `prj.conf` file located in |
| the `child_image/mcuboot` directory. |
| |
| Make sure to keep the configuration consistent with changes made to the |
| application configuration. This is necessary for the configuration to work, as |
| the bootloader image is a separate application from the user application and it |
| has its own configuration file. |
| |
| #### Changing flash memory settings |
| |
| In the default configuration, the MCUboot uses the |
| [Partition Manager](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/scripts/partition_manager/partition_manager.html#partition-manager) |
| to configure flash partitions used for the bootloader application image slot |
| purposes. You can change these settings by defining |
| [static partitions](https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/scripts/partition_manager/partition_manager.html#ug-pm-static). |
| This example uses this option to define using an external flash. |
| |
| To modify the flash settings of your board (that is, your _build-target_, for |
| example `nrf52840dk_nrf52840`), edit the `pm_static_dfu.yml` file located in the |
| `configuration/build-target/` directory. |
| |
| <hr> |
| |
| ## Configuring the example |
| |
| The Zephyr ecosystem is based on Kconfig files and the settings can be modified |
| using the menuconfig utility. |
| |
| To open the menuconfig utility, run the following command from the example |
| directory: |
| |
| $ west build -b build-target -t menuconfig |
| |
| Remember to replace _build-target_ with the build target name of the Nordic |
| Semiconductor's kit you own. |
| |
| Changes done with menuconfig will be lost if the `build` directory is deleted. |
| To make them persistent, save the configuration options in the `prj.conf` file. |
| |
| ### Example build types |
| |
| The example uses different configuration files depending on the supported |
| features. Configuration files are provided for different build types and they |
| are located in the application root directory. |
| |
| The `prj.conf` file represents a debug build type. Other build types are covered |
| by dedicated files with the build type added as a suffix to the prj part, as per |
| the following list. For example, the release build type file name is |
| `prj_release.conf`. If a board has other configuration files, for example |
| associated with partition layout or child image configuration, these follow the |
| same pattern. |
| |
| Before you start testing the application, you can select one of the build types |
| supported by the sample. This sample supports the following build types, |
| depending on the selected board: |
| |
| - debug -- Debug version of the application - can be used to enable additional |
| features for verifying the application behavior, such as logs or |
| command-line shell. |
| - release -- Release version of the application - can be used to enable only |
| the necessary application functionalities to optimize its performance. |
| - no_dfu -- Debug version of the application without Device Firmware Upgrade |
| feature support - can be used only for the nRF52840 DK and nRF5340 DK, as |
| those platforms have DFU enabled by default. |
| |
| For more information, see the |
| [Configuring nRF Connect SDK examples](../../../docs/guides/nrfconnect_examples_configuration.md) |
| page. |
| |
| <hr> |
| |
| ## Flashing and debugging |
| |
| To flash the application to the device, use the west tool and run the following |
| command from the example directory: |
| |
| $ west flash --erase |
| |
| If you have multiple development kits connected, west will prompt you to pick |
| the correct one. |
| |
| To debug the application on target, run the following command from the example |
| directory: |
| |
| $ west debug |
| |
| <hr> |
| |
| ## Testing the example |
| |
| After building and flashing the example, you can test its functionalities. For |
| this purpose, you need to prepare a second device that is programmed with the |
| [Lighting Example](../../lighting-app/nrfconnect/README.md), perform the binding |
| process, and add Access Control Lists (ACLs). |
| |
| ### Commissioning the lighting device |
| |
| To commission the Lighting Example Application to the same Matter network, read |
| the [CHIP Tool user guide](../../../docs/guides/chip_tool_guide.md). |
| |
| ### Binding cluster and endpoints |
| |
| Binding links clusters and endpoints on both devices, which enables them to |
| communicate with each other. |
| |
| To perform binding, you need a controller that can write the binding table to |
| the light switch device and write proper ACL to the endpoint light bulb on the |
| [Lighting Example application](../../lighting-app/nrfconnect/README.md). For |
| example, you can use the |
| [CHIP Tool for Windows or Linux](../../chip-tool/README.md) as the controller. |
| The ACL should contain information about all clusters that can be called by the |
| light switch application. See the section about interacting with ZCL clusters in |
| the |
| [CHIP Tool's user guide](../../../docs/guides/chip_tool_guide.md#interacting-with-data-model-clusters) |
| for more information about ACLs. |
| |
| You can perform the binding process to a single remote endpoint (unicast |
| binding) or to a group of remote endpoints (group multicast). |
| |
| > **Note:** To use a light switch without brightness dimmer, apply only the |
| > first binding command with cluster no. 6. |
| |
| #### Unicast binding to a remote endpoint using the CHIP Tool for Windows or Linux |
| |
| In this scenario, commands are provided for a light switch device with the |
| `nodeId = 2` and a light bulb device with `nodeId = 1`, both commissioned to the |
| same Matter network. |
| |
| To perform the unicast binding process, complete the following steps: |
| |
| 1. Build the CHIP Tool according to the steps from the |
| [CHIP Tool user guide](../../../docs/guides/chip_tool_guide.md#building-and-running-the-chip-tool). |
| 2. Go to the CHIP Tool build directory. |
| 3. Add an ACL to the development kit that is programmed with the |
| [Lighting Application Example](../../lighting-app/nrfconnect/README.md) by |
| running the following command: |
| |
| chip-tool accesscontrol write acl '[{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [112233], "targets": null}, {"fabricIndex": 1, "privilege": 3, "authMode": 2, "subjects": [2], "targets": [{"cluster": 6, "endpoint": 1, "deviceType": null}, {"cluster": 8, "endpoint": 1, "deviceType": null}]}]' 1 0 |
| |
| In this command: |
| |
| - `{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [112233], "targets": null}` |
| is an ACL for the communication with the CHIP Tool. |
| - `{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [2], "targets": [{"cluster": 6, "endpoint": 1, "deviceType": null}, {"cluster": 8, "endpoint": 1, "deviceType": null}]}` |
| is an ACL for binding (cluster no. 6 is the On/Off cluster and the |
| cluster no. 8 is the Level Control cluster). |
| |
| This command adds permissions on the lighting application device that allows |
| it to receive commands from the light switch device. |
| |
| 4. Add a binding table to the Light Switch binding cluster: |
| |
| chip-tool binding write binding '[{"fabricIndex": 1, "node": 1, "endpoint": 1, "cluster": 6}, {"fabricIndex": 1, "node": 1, "endpoint": 1, "cluster": 8}]' 2 1 |
| |
| In this command: |
| |
| - `{"fabricIndex": 1, "node": <1>, "endpoint": 1, "cluster": 6}` is a |
| binding for the On/Off cluster. |
| - `{"fabricIndex": 1, "node": <1>, "endpoint": 1, "cluster": 8}` is a |
| binding for the Level Control cluster. |
| |
| > **Note:** When a light switch device reboots, the binding table is restored |
| > from flash memory and the device tries to bind a known device that is |
| > programmed with the Lighting Application Example. |
| |
| #### Group multicast binding to the group of remote endpoints using the CHIP Tool for Windows or Linux |
| |
| The group multicast binding lets you control more than one lighting device at a |
| time using a single light switch. |
| |
| The group multicast binding targets all development kits that are programmed |
| with the [Lighting Application Example](../../lighting-app/nrfconnect/README.md) |
| and added to the same multicast group. After the binding is established, the |
| light switch device can send multicast requests, and all of the devices in the |
| bound groups can run the received command. |
| |
| In this scenario, commands are provided for a light switch device with the |
| `nodeId = 2` and a light bulb device with `nodeId = 1`, both commissioned to the |
| same Matter network. |
| |
| To perform the unicast binding process, complete the following steps: |
| |
| 1. Build the CHIP Tool according to the steps from the |
| [CHIP Tool user guide](../../../docs/guides/chip_tool_guide.md#building-and-running-the-chip-tool). |
| 2. Go to the CHIP Tool build directory. |
| |
| 3. Add the light switch device to the multicast group by running the following |
| command: |
| |
| chip-tool tests TestGroupDemoConfig --nodeId 1 |
| |
| 4. Add all light bulbs to the same multicast group by applying command below |
| for each of the light bulbs, using the appropriate `<node_id>` (the |
| user-defined ID of the node being commissioned except `2` due to use this |
| `<node_id>` for light-switch) for each of them: |
| |
| chip-tool tests TestGroupDemoConfig --nodeId <node_id> |
| |
| 5. Add Binding commands for group multicast: |
| |
| chip-tool binding write binding '[{"fabricIndex": 1, "group": 257}]' 2 1 |
| |
| ### Testing the communication |
| |
| To test the communication between the light switch device and the bound devices, |
| use [light switch buttons](#buttons) or |
| [Matter CLI commands](#matter-cli-commands), as described in the |
| [Device UI](#device-ui) section. |
| |
| ### Testing the Generic Switch |
| |
| To test the Generic Switch, complete the following steps: |
| |
| 1. Enter the interactive mode of the CHIP Tool: |
| |
| chip-tool interactive start |
| |
| 2. Subscribe to the `InitialPress` and `ShortRelease` event notifications: |
| |
| ```shell |
| switch subscribe-event initial-press 1 20 <node_id> 2 --is-urgent true |
| switch subscribe-event short-release 1 20 <node_id> 2 --is-urgent true --keepSubscriptions true |
| ``` |
| |
| 3. Press **Button 3** to test the new configuration. When pressing and |
| releasing **Button 3**, both events should be sent to the controller. |
| |
| ### Testing Device Firmware Upgrade |
| |
| Read the |
| [DFU tutorial](../../../docs/guides/nrfconnect_examples_software_update.md) to |
| see how to upgrade your device firmware. |
