CHIP Linux Electrical Protection Example

CHIP Linux Electrical Protection Example#

An example showing the use of CHIP on Linux for the Matter 1.7 electrical protection device types. The app presents an Electrical Distribution Enclosure and demonstrates the new Electrical Distribution cluster. The Electrical Circuit Breaker endpoint and the remaining electrical clusters are added by follow-up changes.

The document will describe how to build and run the CHIP Linux Electrical Protection Example on Raspberry Pi. It targets a currently supported Ubuntu for Raspberry Pi Server LTS (aarch64) release, 24.04 LTS or newer.

Device composition#

  • Endpoint 0: Root Node.

  • Endpoint 1: Electrical Distribution Enclosure (0x0517), hosting Descriptor and Electrical Distribution.

Electrical Distribution is provisional in Matter 1.7.

The device type also defines Power Topology as mandatory, and the Electrical Circuit Breaker endpoint it can contain is not present yet. Both arrive with the follow-up changes that add the breaker endpoint and its clusters.

Building#

  • Install tool chain

      $ sudo apt-get install git gcc g++ pkg-config libssl-dev libdbus-1-dev libglib2.0-dev ninja-build python3-venv python3-dev unzip

  • Check out the repository and its submodules:

      $ cd ~
  $ git clone git@github.com:project-chip/connectedhomeip.git
  $ cd connectedhomeip
  $ ./scripts/checkout_submodules.py --platform linux --recursive

    Alternatively you can check out all submodules and resync with:

      $ git submodule sync --recursive; git submodule update --init --recursive

  • Activate at the top level, then build the example application:

      $ cd ~/connectedhomeip
  $ source ./scripts/activate.sh

  $ cd ~/connectedhomeip/examples/electrical-protection-app/linux
  $ gn gen out/debug
  $ ninja -C out/debug

  • To delete generated executable, libraries and object files use:

      $ cd ~/connectedhomeip/examples/electrical-protection-app/linux
  $ rm -rf out/

Commandline arguments#

  • --wifi

    Enables WiFi management feature. Required for WiFi commissioning.

  • --thread

    Enables Thread management feature, requires ot-br-posix dbus daemon running. Required for Thread commissioning.

  • --ble-controller <selector>

    Use the specific Bluetooth controller for BLE advertisement and connections. For details on controller selection refer to Linux BLE Settings.

Running the Complete Example on Raspberry Pi 4#

If you want to test Echo protocol, please enable Echo handler

gn gen out/debug --args='chip_app_use_echo=true'
ninja -C out/debug

  • Prerequisites

    1. A Raspberry Pi 4 board

    2. A USB Bluetooth Dongle, Ubuntu desktop will send Bluetooth advertisement, which will block CHIP from connecting via BLE. On Ubuntu server, you need to install pi-bluetooth via APT.

    3. Ubuntu 24.04 LTS or newer image for ARM64 platform.

  • Building

    Follow Building section of this document.

  • Running

    • [Optional] Plug USB Bluetooth dongle

      • Plug USB Bluetooth dongle and find its bluetooth controller selector as described in Linux BLE Settings.

    • Run Linux Electrical Protection Example App

        $ cd ~/connectedhomeip/examples/electrical-protection-app/linux
  $ sudo out/debug/chip-electrical-protection-app --ble-controller [bluetooth device number]
  # In this example, the device we want to use is hci1
  $ sudo out/debug/chip-electrical-protection-app --ble-controller 1

    • Test the device using ChipDeviceController on your laptop / workstation etc.