If you’ve downloaded a pre-built binary firmware for your car, locate your VI in the list of supported interfaces to find instructions for programming it. You don’t need anything from the VI firmware documentation itself - most users don’t need anything in this documentation. Really, you can stop here!
The first steps for building custom firmware are:
- Make sure you have one of the supported vehicle interfaces.
- Set up your development environment.
- Compile with emulated data output to make sure your development environment is set up, including whatever tool or library you plan to use to interact with the VI.
- Compile the default configuration so you can start reading standard On-Board Diagnostics (OBD-II) data from your car.
- To go beyond OBD-II, create a create a configuration file for your car.
- With a custom configuration in hand, compile with your new config.