On this page we will outline the software we recommend for project contributions, including both development and documentation.
Firstly, in order to work with our code, you will require access to a Git client.
If you have a Linux based system (including macOS), you more than likely have Git installed already, so probably don’t need to install it.
However, for Windows, you will need to install Git, so follow the instructions in the Pro Git book.
Once you’ve installed Git, you will need to set some variables to tell Git who you are when committing code to a repository.
To do this, open a command prompt and run the following two commands, where
user is your GitHub username, and
git config --global user.name <user> git config --global user.email <email>
If using our recommended editor (vscode), once you’ve installed a Git client, you can do all of your repository work (branches, forks, etc.) directly in VSCode.
GitHub Desktop is an application by GiHub that provides a graphical user interface for managing Git repositories and so forth:
Download GitHub Desktop
Another graphical alternative is Sourcetree:
If you’re already using DCC-EX, then it’s likely you’ve already installed the Arduino IDE.
However, if you haven’t, it’s recommended to have this installed, even if using our recommended editor (VSCode). It’s handy to see the same interface that most of our users can see, as they will almost certainly be using the Arduino IDE, and providing support is so much easier when you can use the same tools as the users.
To get up and running with the Arduino IDE, follow the Getting started with Arduino products page.
If you need ESP32 support in addition to the standard Arduino AVR boards, follow the official Espressif Arduino ESP32 documentation.
If you won’t be contributing to the website documentation, you can skip this step.
All website documentation is written in reStructuredText format and built using sphinx, which is outlined on our Contributing to the Documentation page.
In order to correctly preview changes to the website documentation locally on your computer before publishing to the website, you will need to install Python, preferably the latest 3.x version available.
You can obtain Python from python.org or, alternatively, you can install it from the Microsoft store for Windows users.
For Windows users, follow the official Python documentation here: Using Python on Windows.
Note that you will need to ensure Python is added to your PATH environment variable which is outlined on that page also.
The recommended approach to build a local preview is to use a virtual environment that replicates the GitHub pages deployment process, which is outlined in Emulate GitHub Pages deployment.
If you wish, however, to manually install the packages, you can open a command prompt and run the following command:
pip install sphinx_rtd_theme==1.2.0 sphinx-toolbox install sphinx sphinxcontrib-spelling
While any text editor will do, even the most simple one, we highly recommend using the free VSCode (Visual Studio Code) which provides additional components that will make your editing easier with syntax highlighting, text snippets, and live preview of the rendering of the file, as well as integration with GitHub. Using a simple text editor will require you handling the Git integration yourself.
VSCode is great whether you’re contributing as a developer or documenter, and we cover the requirements for both use cases here.
You can download VSCode here.
VSCode includes many different extensions and configuration options to enable the various syntax checks and other additional components, so please review the below to ensure the right configuration and extensions are in place to make things easier for yourself.
To install and manage extensions, either click the manage extensions icon in the left menu section or press <Ctrl> + <Shift> + <x>.
For development, the following extensions are recommended:
C/C++ by Microsoft
PlatformIO IDE by PlatformIO
For documentation, the following extensions are recommended:
reStructuredText by LeXtudio Inc.
reStructuredText Syntax highlighting by Trond Snekvik.
Python by Microsoft.
Enabling live documentation previews
The reStructuredText extension installed with VSCode allows live previewing of the web pages using the “Esbonio language server”.
Note, however, that the Esbonio server will only generate live previews of the pages you are actively editing, and therefore it will not give you a complete updated view of the entire website.
Once you’ve installed the extensions above, it is recommended you close then reopen VSCode, and upon reopening VSCode, you should be prompted in the bottom right hand corner to install the Esbonion language server. It is recommended you do so now.
Refer to the Contributing to the Documentation contribution page for more info on generating reliable local previews.
Once VSCode is installed, it is recommended you update the default spacing for code indents as we standardise this to two spaces across our code base (including documentation).
To do this:
Click the Settings cog icon in the bottom left corner and select “Settings” (alternatively, press <Ctrl> + “,”).
Locate “Editor: Tab size” (should be about the fourth item down).
Set this to “2”, and close the “Settings” tab which will auto-save the change.
In addition to the above, if you are contributing to documentation and are using the recommended extensions, you should ignore certain reStructuredText syntax warnings that are irrelevant.
To configure these:
Click the Settings cog icon in the bottom left corner and select “Settings” (alternatively, press <Ctrl> + “,””).
Enter “restructured” in the search bar, then click on “Edit in settings.json”.
Add this section:
"restructuredtext.linter.doc8.extraArgs": [ "--ignore D001", "--ignore D002", "--ignore D004" ]
Save and close the settings, and the irrelevant warnings should no longer bother you.
If you wish to use VSCode as your default editor for Git, open a command prompt and run the following command:
git config --global core.editor "code --wait"