Software Architecture

This document describes the architecture of COMPAS RRC, and documents design decisions taken during development.

Protocol Specification

The protocol specification is located in YYMMDD_A042_Protokoll_PF.xlsx.

Protocol Version check

The following procedure is used to verify the protocol versions between Python RRC Client, ROS Driver and RRC Server are all matching:

• Python RRC Client <-> ROS Driver:

  • On start, ROS Driver sets current procol version into a parameter.

  • On connect, Python RRC Client checks protocol version in parameter matches its own protocol version and raises an exception if not the same.

• ROS Driver -> RRC Server

  • ROS Driver sends current procol version on every message (as defined in the protocol specification).

  • RRC Server checks first protocol after PP to Main and stops with a message if not the same.

• RRC Server -> ROS Driver

  • Every feedback from the robot contains protocol version in the header.

  • ROS Driver checks protocol version on first feedback after the connection, and raises an exception if not the same.