I can not connect to ROS2 and gazebo network from Matlab in Ubuntu

I have ros2(iron) in my ubuntu 22.04 and simulating with gazebo , so I have a plan to get matlab node to support on controlling the robot but still I dont see my ros2 nodes runing in the local machine through Matlab

[Jagadeesh Konakalla]

Hi Lasantha,

You need to ensure that both are using DOMAIN_ID to see the topics in MATLAB.

Here is the link that can be useful.

https://in.mathworks.com/help/ros/ug/connect-to-a-ros-2-network.html

Also, please porvide more details on where the MATLAB is running. Is it on Ubuntu same machine as Gazebo or Windows machine ? Also ensure that the RMW middleware used is same on both the ends.

Thanks,

Jagadeesh K.

[Lasantha]

Hi Jagadesh,

Thanks,

Yes, I used same DOMAIN_ID as 0 for both, and matlab, gazebo and ros(iron) running on same ubuntu host machine (22.04)

How should I make sure both use same RMW middleware in this situation,

Thank you

[Jagadeesh Konakalla]

Hi Lasantha,

The default RMW used on MATLAB is Fast DDS(rmw_fastrtps_cpp). This looks like same on Iron distribution aslo.

So, we may need more details about your setup to further assist. I recommend you to contact us through the MathWorks Technical Support Team.

Thanks and regards,

Jagadeesh K.