Creating Matter Applications using SLC CLI#

The Silicon Labs Configurator (SLC) defines a way of creating and configuring embedded software projects for Silicon Labs IoT devices. The SLC Command Line Interface (SLC-CLI) tool resolves project and component dependencies and generates a project for a specified embedded target and build system (for example, GNU tools via a Makefile). See UG520: Software Project Generation and Configuration with SLC-CLI for a complete description.

This guide lists the steps that can be followed to create and build a Silicon Labs Matter SLC project using SLC-CLI and make. These scripts are evaluation quality and have been verified to work on Ubuntu 22.04.3 LTS and MacOS Version 13.5.1, Windows support will come in the future releases.

Setting up the environment#

Clone Gecko SDK:

    git clone

Create a directory named extension inside the Gecko SDK directory.

Clone the Matter GSDK Extension inside the extension directory:

    git clone

Your path to the Matter extension should look like


Install the following python packages:

    pip3 install dload

Export the path of your GSDK download to the environment variable GSDK_ROOT. Then cd to cloned extension directory and run the script. This will install the ARM gcc toolchain, SLC-CLI, ZAP and Java.

    export GSDK_ROOT=Path/To/Gsdk/Download
    cd extension/matter_extension
    python3 slc/

The script creates a shell script script that can be used to set the environment variables needed for the installed tools, ARM toolchain, SLC-CLI, Java and ZAP.

    source slc/tools/

Creating an application project#

Run the script to create a BRD4161A project with name MyNewApp starting from the lighting-app-thread.slcp example application project file:

    python3 slc/ MyNewApp slc/sample-app/lighting-app/efr32/lighting-app-thread.slcp brd4161a

Building an application project#

After a project is created the script can be used to re-generate the MyNewApp project and build it:

  python3 slc/ MyNewApp/lighting-app-thread.slcp brd4161a

Alternately, one can use SLC-CLI commands directly to generate the project and then use make to build it.

Modifying an application project#

The resulting user project can be modified like any other SLC project: software components can be added or removed by modifying the project's .slcp file, configuration can be applied by modifying the files in the config directory, the application logic can be managed through the files in the src directory. Various SLC-CLI commands can be used to examine, validate or re-generate the project after a modification, see UG520: Software Project Generation and Configuration with SLC-CLI for more info.

For modifying Matter endpoints and clusters invoke the ZAP tool passing to it the application's ZAP file:

    ./scripts/tools/zap/ MyNewApp/config/common/lighting-thread-app.zap