MATLAB Answers

Fail to create ROS Publisher and ROS subscriber

20 views (last 30 days)
Hi all,
I am creating subscriber and publishers for the turtle bot robot. For most topics, after using rosinit, I can create properly
publishers and subscribers. However, I fail to create a publisher for the /sound topic.
For instance, for topic cmd_vel I get:
r1=rospublisher('/cmd_vel')
r1 = Publisher with properties:
TopicName: '/cmd_vel'
IsLatching: 1
NumSubscribers: 0
MessageType: 'geometry_msgs/Twist'
It works perfect, but for topic sound I get:
r1=rospublisher('/sound')
Failed to create a publisher with topic name /sound and type turtlebot3_msgs/Sound.
Can anyone give me any hint about why this behaviour?
Thank you very much in advance,
Regards,
Ignacio

  0 Comments

Sign in to comment.

Accepted Answer

Cam Salzberger
Cam Salzberger on 17 Jun 2019
Hello Ignacio,
The message type "geometry_msgs/Twist" is one of the standard, built-in ROS message types. However, the message type "turtlebot3_msgs/Sound" is a custom message type specific to the TurtleBot3. You'll need to make that message type available to MATLAB by building the "turtlebot3_msgs" package with the MATLAB Support Package for ROS Custom Messages.
-Cam

  0 Comments

Sign in to comment.

More Answers (0)

Sign in to answer this question.

Products


Release

R2019a