[Solved] NO messages from dds published topics

Help
1

I am trying ROS2 on Rosbot2.0 with cyclone DDS.

When I checmed for topics using ros2 topic list, I see 4 messages from dds_bridge.

But when I tried to read the messages in the topics using ros2 topic echo topic_name. There is no information from the topic

2

Hi Jaswanth,

I’m sorry for long time of response.

After using command ros2 topic list you should see 6 topics not 4:

/battery
/cmd_vel
/odom
/prameter_events
/rosout
/tf

Please confirm that you are using the newest image and you can see the same topics as I see.

Best regards,
Hubert

3

I got it working…Forgot to run the serial communication service.

1 Like