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Multi-Machine with cpp

asked 2020-08-20 11:55:51 -0600

VictorBarth
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I've done the multi-machine tutorial, and it works. I'm using my desktop as master and my raspberry as slave. The problem is: with the talker.py and listener.py it works nice, but with talker and listener from c++ tutorials it no works. I receive the message: [ERROR] [1597939815.196358501]: [registerPublisher] Failed to contact master at [barth@192.168.15.10:11311]. Retrying...

So its not a problem of ROS_IP or ROS_Hostname. I have no idea of what can be. Any hints?

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answered 2020-08-20 18:07:25 -0600

praskot
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Explicitly tell the raspberry pi where the master is located at,

In Raspberry pi add the following line to ~/.bashrc,

export ROS_MASTER_URI=http://192.168.15.10:11311

and in the master ensure you do,

export ROS_IP=192.168.15.10

(I usually set IP as the hostname, i.e., export ROS_HOSTNAME=192.168.15.10.)

Finally, make sure you both the master desktop and raspberry pi are on the same network and you are able to ping master from the raspberry pi.

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Thanks, the problem is that I was doing:

export ROS_MASTER_URI=http://barth@192.168.15.10:11311

instead of

export ROS_MASTER_URI=http://192.168.15.10:11311

VictorBarth ( 2020-08-21 15:25:25 -0600 )edit

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Asked: 2020-08-20 11:55:51 -0600

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Last updated: Aug 20 '20

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