Visual Studio Code plus PlatformIO extension

Visual Studio Code is a free source-code editor made by Microsoft for Windows, Linux and macOS. Features include support for debugging, syntax highlighting, intelligent code completion, snippets, code refactoring, and embedded Git.

You can download VS Code here.

Once you have the repository cloned into your machine (see Git guide), open it with Visual Studio Code.

To do so, just open Visual Studio Code, go to File > Open Folder or you can open it from GitHub Desktop with the related button on the home page or in the menu Repository > Open in Visual Studio Code

Then, look for the folder containing your local version of the repository.

You should have something like this:

Once you are there, you will need PlatformIO extensions.

To do so, you can click on View > Extensions.

Look for the PlatformIO extension and install it.

After the installation you need to click on the Open Project on the PlatformIO home page.

Navigate to your local folder of polaris-opencore and select it (it's the folder containing the file platformio-ini).

On the bottom bar of VS Code you can find the buttons to compile and upload the code to the saber.