SL_RESULT_OPERATION_TIMEOUT! s2e lidar

[tugbakara]

Hey, I am using this package with s2e lidar but I got this error while starting the launch:

$ ros2 launch sllidar_ros2 sllidar_s2e_launch.py
[INFO] [launch]: All log files can be found below /home/ubuntu/.ros/log/2023-05-30-16-45-39-485600-robot2-6754
[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [sllidar_node-1]: process started with pid [6756]
[sllidar_node-1] [INFO] [1685454339.815974183] [sllidar_node]: SLLidar running on ROS2 package SLLidar.ROS2 SDK Version:1.0.1, SLLIDAR SDK Version:2.0.0
[sllidar_node-1] [ERROR] [1685454343.863196303] [sllidar_node]: Error, operation time out. SL_RESULT_OPERATION_TIMEOUT! 
[ERROR] [sllidar_node-1]: process has died [pid 6756, exit code 255, cmd '/home/ubuntu/Robot_Project/husorion_ws/install/sllidar_ros2/lib/sllidar_ros2/sllidar_node --ros-args -r __node:=sllidar_node --params-file /tmp/launch_params_5dcjgxza'].

[sardanian]

I am having this same issue. Has this been resolved or does anyone have a solution to this?

[JetForMe]

I get this too, using the latest code, with a similar command. The viewer is displayed, but the RPLidar S3 does not start spinning or collecting data.

~/ros2_ws/src$ ros2 launch sllidar_ros2 view_sllidar_s3_launch.py serial_port:='/dev/ttyTSH0'
[INFO] [launch]: All log files can be found below /home/rmann/.ros/log/2023-10-18-00-33-04-349224-mouse-5752
[INFO] [launch]: Default logging verbosity is set to INFO
[INFO] [sllidar_node-1]: process started with pid [5754]
[INFO] [rviz2-2]: process started with pid [5756]
[sllidar_node-1] [INFO] [1697614384.692106545] [sllidar_node]: SLLidar running on ROS2 package SLLidar.ROS2 SDK Version:1.0.1, SLLIDAR SDK Version:2.0.0
[sllidar_node-1] [ERROR] [1697614384.734661967] [sllidar_node]: Error, operation time out. SL_RESULT_OPERATION_TIMEOUT! 
[ERROR] [sllidar_node-1]: process has died [pid 5754, exit code 255, cmd '/home/rmann/ros2_ws/src/install/sllidar_ros2/lib/sllidar_ros2/sllidar_node --ros-args -r __node:=sllidar_node --params-file /tmp/launch_params_u5xsc0a2'].
[rviz2-2] [INFO] [1697614385.701906141] [rviz2]: Stereo is NOT SUPPORTED
[rviz2-2] [INFO] [1697614385.702302534] [rviz2]: OpenGl version: 4.6 (GLSL 4.6)
[rviz2-2] [INFO] [1697614385.747318745] [rviz2]: Stereo is NOT SUPPORTED

If I ssh into the machine and invoke the same command, the RPLidar S3 does begin spinning, but of course the UI doesn’t show up.

The same thing happens if I use the sllidar_s3_launch.py launch file (which needed fixes to add the channel_type LaunchConfiguration): it runs if launched from ssh, but not from the console.

I was able to get something working by doing this (in my case, the RPLidar is connected to a Jetson Orin Nano on UART1, /dev/ttyTHS0, and I’m logging in from my Mac):

1. On my Mac, ssh into the machine with the RPLidar connected, and execute:

   $ cd ~/ros2_ws/src
   $ ros2 launch sllidar_ros2 sllidar_s3_launch.py serial_port:='/dev/ttyTHS0'

2. On the target (keyboard & display connected to Orin Nano):

   $ cd ~/ros2_ws/src
   $ ros2 run rviz2 rviz2 -d sllidar_ros2/rviz/sllidar_ros2.rviz

This sets the RPLidar scanning and displays the resulting data.