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Publishing a topic/message in a callback member function

asked 2011-12-14 22:13:15 -0600

alfa_80 gravatar image

updated 2011-12-14 22:18:49 -0600

I attempt to publish a topic/messages in a callback member function (refer here in the answers section), but, it doesn't work. The code is compiled without any complaints, however, when I issue a command to see the published message, say, ros echo -c /topic, it shows nothing there.

Is it not doable publishing it in the callback member function? Are there any alternatives to that?

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Are you sure your callback is being called?
Dan Lazewatsky gravatar image Dan Lazewatsky  ( 2011-12-15 02:21:58 -0600 )edit

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answered 2011-12-14 22:24:32 -0600

dornhege gravatar image

Yes it is doable.

Other than that, you will need to give more information.

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Asked: 2011-12-14 22:13:15 -0600

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Last updated: Dec 14 '11