I'm running kinetic on Ubuntu 16.04 (x86).
I've followed the instructions for razor_imu_9dof, for the Razor SEN-14001 M0 board from Sparkfun. I flashed the AHRS firmware, and installed all the relevant ROS packages. I am able to see the IMU spewing data on /dev/ttyACM0, by running cat or screen.
However, when I run
roslaunch razor_imu_9dof razor-pub-and-display.launch
I just get the error:
[ERROR] [1525842655.072800]: IMU not found at port /dev/ttyACM0. Did you specify the correct port in the launch file?
What am I doing wrong? Is there a way to troubleshoot?
Originally posted by roach374 on ROS Answers with karma: 36 on 2018-05-09
Post score: 0
Original comments
Comment by PeteBlackerThe3rd on 2018-05-09:
Just to check you're not trying to run the launch file at the same time as viewing the output using cat or screen are you?
Comment by roach374 on 2018-05-09:
No, I did that separately, add part of my naive attempt to troubleshoot. One thing I did notice though, the /dev/ttyACM0 device is owned by root/dialout. Maybe it's a permissions issue? I tried running sudo roslaunch, but it barfed with "unrecognized command".
Comment by PeteBlackerThe3rd on 2018-05-09:
if cat can read from the port then it should be fine. You can always use chmod to set the permissions of /dev/ttyACM0 . Note they will be reset every time to plug it in.
Comment by PeteBlackerThe3rd on 2018-05-09:
We've got a few of these in our lab, I can check what the output should look like tomorrow so you can check the firmware is correct.
Comment by roach374 on 2018-05-09:
I think I've figured it out. It WAS a permissions issue. I added my user account to the dialout group, and things seem to be working fine now. Thanks!