# Modules & Commands Reference

The following pages document the PX4 modules, drivers and commands. They describe the provided functionality, high-level implementation overview and how to use the command-line interface.

This is auto-generated from the source code and contains the most recent modules documentation.

It is not a complete list and NuttX provides some additional commands as well (such as free). Use help on the console to get a list of all available commands, and in most cases command help will print the usage.

Since this is generated from source, errors must be reported/fixed in the Firmware repository. The documentation pages can be generated by running the following command from the root of the Firmware directory:

make module_documentation


The generated files will be written to the modules directory.