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sbgisen / vesc

VESC Interface for ROS
Apache License 2.0
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ERROR: cannot launch node of type [vesc_hw_interface/vesc_hw_interface_node] #33

Closed matthewryanburgin191 closed 3 years ago

matthewryanburgin191 commented 3 years ago

Good day,

When roslaunch vesc_hw_interface velocity_control_sample.launch or other examples. the following error occurs;

ERROR: cannot launch node of type [vesc_hw_interface/vesc_hw_interface_node]: Cannot locate node of type [vesc_hw_interface_node] in package [vesc_hw_interface]. Make sure file exists in package path and permission is set to executable (chmod +x)

The vesc_hw_interface_node.cpp has executable permissions.

what am i missing?

best regards matthew

ssr-yuki commented 3 years ago

Hi, thank you for reporting.

Unfortunately, I cannot reproduce such a error on my several computers. Therefore I would like to ask you the following two questions:

  1. Have you run source {YOUR_CATKIN_WS_PATH}/devel/setup.bash surely after building?
  2. Does a binary named vesc_hw_interface_node exist in {YOUR_CATKIN_WS_PATH}/devel/lib/vesc_hw_interface?
matthewryanburgin191 commented 3 years ago

Thank you for your replay.

  1. Yes its sourced.
  2. No there is no binary of that name.

I've tried it on 2 Pc's amd64 running Ubuntu and melodic with same results and with multiple rebuilds.

How has the binary been missed? Is it a catkin issue?

Best regards

Matthew

matthewryanburgin191 commented 3 years ago

Sorry my appologies! /home/pi/catkin_ws/devel/lib/vesc_hw_interface/vesc_hw_interface_node is present

matthewryanburgin191 commented 3 years ago

Solved-ish: So I went and built another package in the catkin work space and when launched it had a very simular error. After deleting the workspace for the second or third time the error disappeared and the node launches.

Best regards

ssr-yuki commented 3 years ago

That's a relief. This issue must come from not this repo. but ROS path system.