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Using actions [closed]

asked 2015-02-09 09:45:01 -0500

pexison gravatar image

Hello, I tried to modify one of those tutorials of actionlib and when i do catkin_make the output is this:

-- Using these message generators: gencpp;genlisp;genpy
-- Generating .msg files for action control/Control /home/robot/Desktop/gamma/src/control/action/Control.action
Traceback (most recent call last):
  File "/opt/ros/hydro/share/actionlib_msgs/cmake/../../../lib/actionlib_msgs/genaction.py", line 136, in <module>
Generating for action Control
    if __name__ == '__main__': main()
  File "/opt/ros/hydro/share/actionlib_msgs/cmake/../../../lib/actionlib_msgs/genaction.py", line 97, in main
    raise ActionSpecException("%s: wrong number of pieces, %d"%(filename,len(pieces)))
__main__.ActionSpecException: /home/robot/Desktop/gamma/src/control/action/Control.action: wrong number of pieces, 6
CMake Error at /opt/ros/hydro/share/catkin/cmake/safe_execute_process.cmake:11 (message):

  execute_process(/home/robot/Desktop/gamma/build/catkin_generated/env_cached.sh
  "/usr/bin/python"
  "/opt/ros/hydro/share/actionlib_msgs/cmake/../../../lib/actionlib_msgs/genaction.py"
  "/home/robot/Desktop/gamma/src/control/action/Control.action" "-o"
  "/home/robot/Desktop/gamma/devel/share/control/msg") returned error code 1
Call Stack (most recent call first):
  /opt/ros/hydro/share/actionlib_msgs/cmake/actionlib_msgs-extras.cmake:67 (safe_execute_process)
  control/CMakeLists.txt:57 (add_action_files)

The action file contains this:

#Twist defined in action
  float64 x_angular
---
  float64 y_angular
--- 
  float64 z_angular
---
  float64 x_linear
--- 
  float64 y_linear
---
  float64 z_linear

What could be happening here?

Thanks beforehand!

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Closed for the following reason the question is answered, right answer was accepted by pexison
close date 2015-02-09 10:48:40.691122

1 Answer

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answered 2015-02-09 10:24:37 -0500

dornhege gravatar image

Your action file must have exactly 3 sections separated by --- for goal, result and feedback. You have 6 sections.

If you want to include another message type include that type instead of repeating its content, i.e. use geometry_msgs/Twist twist as an entry.

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Sorry, it was a beginner fault

pexison gravatar image pexison  ( 2015-02-09 10:48:32 -0500 )edit

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Asked: 2015-02-09 09:45:01 -0500

Seen: 606 times

Last updated: Feb 09 '15