Running the Matter Demo over Wi-Fi on EFR32 device#

Flashing Images/Binaries on EFR32MG24 Platform using Ozone, Simplicity Studio, or Simplicity Commander#

Note: If you are coming from Simplicity Studio, you may have already installed the demo image in Simplicity Studio, in which case you can skip to the next step.

  1. Plug the WSTK and EFR into the laptop.

  2. Based on the Application being built, make sure to flash proper bootloader internal or external binaries.

  3. Follow instructions to Flash a Silicon Labs Device with the demo binary.

Demo Execution - Commissioning a Wi-Fi Device using chip-tool for Linux#

Commissioning can be done using chip-tool running either on Linux or Raspberry Pi

  1. Get the SSID and PSK of the Wi-Fi network (WPA2 - Security) you are connected to.

  2. Run the following:

$ cd $MATTER_WORKDIR/matter

Commissioning Command:#

$ out/standalone/chip-tool pairing ble-wifi 1122 $SSID $PSK 20202021 3840

The node ID used here is 1122. This will be used in future commands. '$SSID' is a placeholder for your Wi-Fi SSID and '$PSK' is a placeholder for the password of your Wi-Fi network.

  1. To turn on the LED on the EFR32MG24:

    $ out/standalone/chip-tool onoff on 1122 1
  2. To turn off the LED on the EFR32MG24:

    $ out/standalone/chip-tool onoff off 1122 1

If there are any failures, run the following command and then re-run the chip-tool command:

$ rm -rf /tmp/chip_*

If you are having difficulty getting the chip-tool to commission the device successfully, it may be because you have more than one network interface available to the chip-tool. The device on which you are running the chip-tool must be on the same Wi-Fi network as your RS9116 or WF200 and there cannot be another network interface on the device that is running the chip-tool. For instance, if you have an Ethernet connection as well as a Wi-Fi connection, you need to unplug the Ethernet connection and try running the chip-tool as in step #2 above.

As the device remembers the Access Point credentials given for commissioning, if you want to run the demo multiple times, do a factory reset by pressing the BTN0 on EFR32MG24 for about 6-7 seconds. The LED0 will flash 3 times.

The commissioning command mentioned above does the following:

  • chip-tool scans BLE and locates the Silicon Labs device that uses the specified discriminator

  • Sends the Wi-Fi SSID and Passkey

  • The Silicon Labs device will join the Wi-Fi network and get an IP address. It then starts providing mDNS records on IPv4 and IPv6

  • chip-tool then locates the device over Wi-Fi and establishes operational certificates

  • Future communications (tests) will then happen over Wi-Fi