Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Where can I get a program for "service call"? [closed]

asked 2020-12-17 00:05:09 -0500

snow

3 ●1 ●2 ●2

I used a command as below.

ros2 service call /set_message hello_world_msgs/srv/SetMessage \ '{message: "Hello service!"}'

I'd like to know how this program works.

But I couldn't find a program for "service call" in my computer and Internet.

So, I'd like to know where I can get the program.

Could someone tell me where can I get the program, please?

My environment is below.

Environment

OS: Ubuntu18.04.5 LTS

ROS2: Dashing Diademata

edit retag flag offensive reopen merge delete

Closed for the following reason the question is answered, right answer was accepted by snow
close date 2020-12-19 19:50:18.492101

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2020-12-17 15:17:25 -0500

jdlangs
971 ●23 ●47 ●45

The service call part are just subcommands which are interpreted by the top-level ros2 command. In this case the ros2 command hands off execution to a python library defined by the ros2servicepackage. You can see the source for this package here: https://github.com/ros2/ros2cli/tree/... Take a look inside verb/call.py to see what's running for the specific example in your question.

edit flag offensive delete link

Comments

Thank you for your reply. I had a look a program. Does the program made by c++ exists?

snow ( 2020-12-17 20:50:51 -0500 )edit

Check out the ros2 examples and demos repositories for sample programs in both C++ and Python. For example, a service calling example can be found here.

jdlangs ( 2020-12-18 19:31:36 -0500 )edit

Thank you very much. I appreciate your kindness.

snow ( 2020-12-19 19:47:56 -0500 )edit

add a comment

Question Tools

1 follower

Stats

Asked: 2020-12-16 23:53:41 -0500

Seen: 96 times

Last updated: Dec 17 '20

Where can I get a program for "service call"? [closed] edit

Closed for the following reason the question is answered, right answer was accepted by snow close date 2020-12-19 19:50:18.492101