# Piccolo Protocol Generation The Piccolo CAN protocol messages are generated using the [ProtoGen](https://github.com/billvaglienti/ProtoGen) protocol generation tool. The raw protocol definition for each device type is provided in a `.xml` file (e.g. `protocol_esc_velocity.xml`). To regenerate the protocol, run the following command: `protogen.exe protocol_esc_velocity.xml --license license.txt`