New node registered with same name error

1

Hi,

I’m trying to connect two CORE2-ROS to a PC which is running the roscore.
I set up all the IP addresses in the bashrc files properly.
When I do /opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2, I hope it connects to the roscore on the master PC. After using rostopic list I can see that that works.

Now I am trying to do that with a second CORE2-ROS, but the first one disconnects. I get this message:

shutdown request: new node registered with same name

Is there a way to change the name of the serial nodes to prevent this from happening?

2

Hello Mike,

ROS system can handle only one node with given name.
When you start serial bridge with:

/opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2

It gets default name, thus will shutdown any node that is running with the same name.

To prevent that, you can bind another node name:

/opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2 __name:=serial_node_on_first_device

And on another CORE2-ROS:

/opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2 __name:=serial_node_on_second_device

You could bin any name you wish for nodes.

Regards,
Łukasz

3

Once again Lukasz, thanks a lot.

I hope we are not the coffeetalk dummies of Husarion by now :slight_smile: , after asking so many (dumb) questions.