Using the Mattertool (chip-tool)#

The following commands show how to commission a 917 SoC Matter End Device (Matter Accessory Device), and then send the on/off commands with the mattertool automated script. The mattertool script provides an interface into various chip-tool commands used to create and interact with a Matter network.

Prerequisites#

Download the raspi image and flash the image onto pi using with default 'ubuntu' username and enable ssh in the options.

https://www.silabs.com/documents/public/software/SilabsMatterPi_2.4.0-1.4-extension.zip

Erase 917 SoC (brd4338a) and Flash the lighting app on 917 SoC and flash the connectivity firmware image.
command for commission using mattertool :

  mattertool bleWifi -s <SSID> -p <passcode>

Basic Mattertool Commands#


Context	Command	Usage
`Commissioning`	`mattertool bleWifi`	Starts commissioning of a Matter Accessory Device using the chip-tool
`Commissioning`	`mattertool pairing code`	Commission a Matter end device which is already in the IPv6 local network
`Commissioning`	`<node_id> <pairing code>`	using it's pairing code
`Multi-fabric`	`mattertool pairing open-commissioning-window`	Open a commissioning window for a Matter end device
`Multi-fabric`	`<node_id> <option> <window_timeout> <iteration> <discriminator>`	so that it can join another fabric
`Device interaction`	`mattertool on`	Sends the on command to the Matter Accessory Device using the chip-tool
`Device interaction`	`mattertool off`	Sends the off command to the Matter Accessory Device using the chip-tool
`Device interaction`	`mattertool onoff`	Control the OnOff cluster of a specific Endpoint of a specific device

You can also use the full chip-tool command set (still using mattertool):

$ mattertool levelcontrol read current-level 106 1


Command	Description
help	Prints help options
bleWifi	For Matter Bluetooth LE Wi-FI commissioning with 917 SoC device
buildCT	Clean build of the chip-tool
cleanVars	Erase every Set variable used in the script. They will be set back to default or randomized value
off	Turn off the Light on the already-commissioned 917 SoC device
on	Turn on the Light on the already-commissioned 917 SoC device
toggle	Toggle the Light on the already-commissioned 917 SoC device
parsePayload	Parse the given Payload (QrCode string)
rebuildCT	Rebuild the chip-tool
vars	Print the Variables in use by the script

Some options/arguments can be added to the command to update the values of the variables used by the script.

Available commands:


Command	Description
-h, --help	Prints help options
-n, --nodeId DIGIT	Specify the Nodeid you are trying to reach
-e, --endpoint DIGIT	Specify an endpoint for the desired cluster
-s, --ssid STRING	Wi-Fi AP SSID that the end devices need to connect to
-p, --password STRING	Wi-Fi AP password

These configurations are held until overwritten, cleared with cleanVars or when Raspberry Pi reboots.

Active variables used by mattertool:


Variable	Value
MATTER_ROOT	/home/ubuntu/connectedhomeip
CHIPTOOL_PATH	/home/ubuntu/connectedhomeip/out/standalone/chip-tool
NODE_ID	31354
PINCODE	20202021
DISCRIMINATOR	3840
SSID	<your_SSID>
lastNodeId	0

You can preset them with export X=Y before running the script or use some available options to change some of them.

In most cases, MATTER_ROOT, CHIPTOOL_PATH, PINCODE, and DISCRIMINATOR should remain at the default set value.

For commissioning commands ( bleWifi), NODE_ID will be randomized if it is the same as the last pairing.

Scripts Alias#

The commands presented above are linked to scripts. You can edit .bashrc and rename the following alias to your liking.

$ alias mattertool=‘source $HOME/scripts/matterTool.sh’