openxc-generate-firmware-code - configure CAN messages, signals and buses¶
The OpenXC vehicle interface firmware uses a JSON-formatted configuration file to set up CAN messages, signals and buses. The configuration options and many examples are included with the VI firmware docs. The configuration file is used to generate C++ that is compiled with the open source firmware.
The OpenXC Python library contains a command line tool,
openxc-generate-firmware-code, that can parse VI configuration files and
generate a proper C++ implementation to compile the VI firmware.
Once you’ve created a VI configuration file, run the
openxc-generate-firmware-code tool to create an implementation of
the functions in the VI’s
signals.h. In this example, the configuration is
in the file
$ openxc-generate-firmware-code --message-set mycar.json > signals.cpp