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ROS Toolkit Trouble
slow
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07-26-2013 12:31 AM
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I am starting to use the ROS Toolkit v1.0 with LabVIEW 2011.
The ROS Toolkit can be found here: . I am able to follow this example and am able to connect a joystick to LabVIEW and see /cmd_vel messages in ROS, as I would expect.
However, when I try to expand on this example, I'm coming up short.
I'm trying to use the "ROS Generic Send" function, found under the ROS Toolkit palette. Unfortunately, there seems to be little explanation as to what all goes where.
Has anyone successfully used the ROS Toolkit to connect LabVIEW and ROS? If so, have you moved beyond the example linked above?
Thank you for your time.
-slow
07-26-2013 10:56 AM - edited 07-26-2013 10:58 AM
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EDIT:
Adding LabVIEW VI screen shots and ROS error message.
07-26-2013 12:32 PM
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Ok.
I had an errant '/' in my message type.
It should be 'std-msgs/Float64' and not '/std_msgs/Float64'.
Other than that... I'm still trying to figure out why my data isn't being displayed correctly.
hyun.suh
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09-19-2013 02:30 AM
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Do you still struggle with this issue? I got an error from Labview side saying:
Error 62 occurred at TCP Read in ros_toolkit.lvlib:ROS Read.vi
Possible reason(s):
LabVIEW: Serial port overrun error.
=========================
LabVIEW: The system caused the network connection to be aborted.
Do you have any idea for this error?
Thanks!
pratikbhimani.e
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10-31-2013 02:06 AM
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i have same problem. if anyone have solution of this pls reply...
Tanks in advance
PRatik
11-02-2013 01:11 PM
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Actually, I think the error came about because of the message format (the data type used to define the message type that's sent to ROS). Unfortunately, this was left undocumented by the guys at Clearpath. Don't get me wrong, those guys are pretty stand-up dudes (they fielded a few calls from me, taking time out from getting ready for NI-Week 2013) and I hope the upcomming release does well. I just look forward to a more thorough "how-to".
I've attached what should be a working sample.
This is for a 4 DOF, AX-12 Dynamixel servo powered, arm.
The kinematics (joint angles) of the dynamixel motors are "off"... but that doesn't really matter in your case as they are specific to the configuration of the arm being used.
On the ROS side of things, just make sure that you have the correct nodes running and subscribing to the proper topic (message/ data type) sent over from Labview.
Let me know if you need any further explanation. Happy to help prevent a few headaches (and *headdesk* moments).
