tree: bc038b3a429b2e636fabd7db01084cca07db2fa2 [path history] [tgz]
  1. main/
  2. third_party/
  3. .gitignore
  4. chip_main.cmake

CHIP Ameba Light Switch Example

This example demonstrates Matter Light-Switch application on Ameba platform.

Supported Device

The CHIP demo application is supported on Ameba RTL8722DM Board.

Building the Example Application

  • Pull docker image:

      $ docker pull connectedhomeip/chip-build-ameba:latest
  • Run docker container:

      $ docker run -it -v ${CHIP_DIR}:/root/chip connectedhomeip/chip-build-ameba:latest
  • Setup build environment:

      $ source ./scripts/
  • To build the demo application:

      $ ./scripts/build/ --target ameba-amebad-light-switch build

    The output image files are stored in out/ameba-amebad-light-switch/asdk/image folder.

    The bootloader image files are stored in out/ameba-amebad-light-switch/asdk/bootloader folder.

  • After building the application, Ameba Image Tool is used to flash it to Ameba board.

  1. Connect your device via USB and open Ameba Image Tool.
  2. Select correct serial port and set baudrate as 115200.
  3. Browse and add the corresponding image files in the Flash Download list to the correct locations
  4. Click Download button.


There are two commissioning modes supported by Ameba platform:

BLE mode

  1. Build and Flash
  2. The light-switch example will run automatically after booting the Ameba board.
  3. Test with Chip-Tool

IP mode

  1. Build and Flash
  2. The light-switch example will run automatically after booting the Ameba board.
  3. Connect to AP using ATW0, ATW1, ATWC commands
  4. Test with Chip-Tool

Cluster Control

After successful commissioning, use the OnOff cluster command to control the OnOff attribute. This allows you to toggle a parameter implemented by the device to be On or Off.

  • Via Chip-Tool

      $ ./chip-tool onoff on <nodeID> 1
      $ ./chip-tool onoff off <nodeID> 1

Running RPC Console

  • Connect a USB-TTL adapter as shown below

  • For AmebaD

        Ameba         USB-TTL
        A19           TX
        A18           RX
        GND           GND
  • For AmebaZ2

        Ameba         USB-TTL
        A13           TX
        A14           RX
        GND           GND
  • Build the chip-rpc console

  • As part of building the example with RPCs enabled the chip_rpc python interactive console is installed into your venv. The python wheel files are also created in the output folder: out/debug/chip_rpc_console_wheels. To install the wheel files without rebuilding:

        $ pip3 install out/debug/chip_rpc_console_wheels/*.whl
  • Launch the chip-rpc console after resetting Ameba board

        $ chip-console --device /dev/tty<port connected to USB-TTL adapter> -b 115200
  • Get and Set lighting directly using the RPC console

        rpcs.chip.rpc.Lighting.Set(on=True, level=128, color=protos.chip.rpc.LightingColor(hue=5, saturation=5))

Running Matter Shell

  • Matter Shell is enabled whenever RPC is disabled.

  • RPC console and Matter Shell cannot be enabled at the same time as they use the same UART port.

  • Connect Ameba to the USB-TTL adapter as shown in the RPC section.

  • Open the USB-TTL serial port and type help to view the available commands

Binding and Controlling a Lighting Device

  • This example shows how to bind a Switch Device to a Lighting Device and control it through the Matter Shell. One binding client (Switch Device) and one binding server (Lighting Device) is required.

  • Commission the switch (nodeID 1) and lighting device (nodeID 2) using chip-tool.

          $ ./chip-tool pairing ble-wifi 1 <SSID> <PASSWORD> 20202021 3840
          $ ./chip-tool pairing ble-wifi 2 <SSID> <PASSWORD> 20202021 3840
  • After successful commissioning, configure the ACL in the lighting device to allow access from switch device and chip-tool.

          $ ./chip-tool accesscontrol write acl '[{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [112233], "targets": null },{"fabricIndex": 1, "privilege": 5, "authMode": 2, "subjects": [1], "targets": null }]' 2 0
  • Bind the lighting device to the switch device.

          $ ./chip-tool binding write binding '[{"fabricIndex": 1, "node":2, "endpoint":1, "cluster":6}]' 1 1
  • Control the lighting device through the switch device's Matter Shell

          > switch onoff on
          > switch onoff off