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workgroup:messaging:start

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Messaging WG

Overview

Evaluate middleware solutions for communication between GCS, drone, cloud, and between processes running on the vehicle. Select the best solution and evaluate ROS compatibility.

Some requirements include:

  • Robust, SW messaging solution for commercial deployments of PX4
  • Needs to scale to optimally support remote connections over an unreliable link, to onboard interprocess communication, and in-process communication.
  • On-board heterogeneous compute (i.e. between different types of SoC core running parts of the flight stack) to be handled by a communication bridge.
  • Extensible serialization format

Current Status

Weekly Messaging WG Meetings are being held by Google Hangout on Wed mornings.

The majority of the work to date has been done by eProsima on creating a bridge between uORB and RTPS. There are repositories on Github and videos on YouTube of the progress to date:

Open Issues

There are a few open issues to resolve:

  • Whether to support ROS via full ROS2 support and existing ROS2 to ROS bridge or create a MAVROS impelmentation that works with RTPS
  • PX4 Integration plan
    • The details of the PX4 integration plan need to be flushed out
  • Snapdragon FastRPC support, OMG IDL and DDS RPC
    • Investigate the best architecture for integration of FastRTPS with FastRPC
  • Serialization format
    • ROS2 uses ROS serialization format which is currently not extensible
    • 3DR had selected Cap n' Proto for serialization

Previous Analysis

workgroup/messaging/start.1489686407.txt.gz · Last modified: 2017/03/16 17:46 by Mark Charlebois