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How to send a message from a non ROS node to a ROS node

communicatiom_ros-node_non-ros-node

asked 2016-01-30 13:56:09 -0500

highWaters
176 ●14 ●18 ●26

Hello,

Is it possible to have a program on a remote device which doesn't have ROS installed that sends messages to a ROS node on another device (which has ROS)?

I was thinking to start small and have a small c program that sends an int via a udp channel, but I'm not sure how this is going to be received, or published to a topic. Any guideline on how you would go about this?

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answered 2016-01-30 16:22:17 -0500

ahendrix

47576 ●179 ●367 ●662 http://namniart.com/

You probably shouldn't try to publish directly to a ROS topic from a non-ROS system (this would effectively mean re-implementing the ROS libraries for some other platform, which probably isn't what you want to do).

Instead, the common pattern here is to write a gateway node which communicates over standard TCP or UDP on one side, and publishes ROS messages, and to run this node on your ROS system.