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When I run the line
rosrun xv_11_laser_driver neato_laser_publisher _port: = / dev / ttyUSB0
This message appears:
[ERROR] [1553391719.243142699]: Error instantiating laser object. Are you sure you have the correct port and baud rate? Error was open: Permission denied.
Please help me! :(
That error means you don't have access to the port but implies the port is present.
Try this at terminal prompt:
sudo chmod a=rwx /dev/ttyUSB0
and try your node again to see if it works.
You can get more info on serial from the following(or at least 1,000,000 other links): https://www.cyberciti.biz/faq/find-out-linux-serial-ports-with-setserial/
Asked: 2019-03-23 21:09:27 -0500
Seen: 149 times
Last updated: Mar 24 '19
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Are you sure that you have the correct port and baud rate? Also, do you have sufficient permissions?
Make sure the user is in the dialout group