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Some errors are not published to /rosout.

Open Krzo99 opened this issue 1 year ago • 3 comments


Required Info
Camera Model D456
Firmware Version 5.15.0.2
Operating System & Version Ubuntu 22.04
Kernel Version (Linux Only) 5.15.122-tegra
Platform Nvidia Jetson
Librealsense SDK Version 2.54.1
Segment Python launch file
ROS Distro ROS2 humble, Jetpack 6.0

Issue Description

Some errors, printed in the console, are not being published to /rosout. Especially control_transfer returned error, index: 768, error: Resource temporarily unavailable, number: 11. This can happen at runtime, and it would be good to have it there for debugging purposes.

Krzo99 avatar May 27 '24 08:05 Krzo99

Hi @Krzo99 If control_transfer returned warnings are not being logged to file then this can be considered an advantage. This is because this type of message typically generates so frequently that it makes a log file difficult to read and analyze.

If you do require the messages though then you could test whether changing the logging level from the default 'Info' to the more detailed 'Debug' makes a difference. This can be done by adding the command log_level:=debug to the launch instruction.

ros2 run ros2 run realsense2_camera realsense2_camera_node --ros-args -p log_level:=debug

ros2 launch ros2 launch realsense2_camera rs_launch.py log_level:=debug

MartyG-RealSense avatar May 27 '24 10:05 MartyG-RealSense

That makes sense, however, I still think printing to /rosout would make sense here. All other errors are being printed, like Hardware Notification:Depth stream start failure,1.71681e+12,Error,Hardware Error In my case, It would be a great way to log and check why the rtabmap odometry was lost. It can quite easily happen if this control_transfer returned error error happens, as the whole depth module flickers when this happens at runtime.

Do you maybe know what the error numbers mean?

Setting log_level to debug doesn't have any effect in this case.

Krzo99 avatar May 27 '24 11:05 Krzo99

The number after Depth stream start failure is not meaningful.

In general, control_transfer returned warnings are indicative of a communication problem between the camera and the computer / computing device, such as an issue with the USB port or cable.

Odometry may be lost if the camera is moving or turning too quickly or if the scene that the camera is observing is 'sparse' with not many objects in it.

MartyG-RealSense avatar May 27 '24 11:05 MartyG-RealSense

Hi @Krzo99 Do you require further assistance with this case, please? Thanks!

MartyG-RealSense avatar Jun 03 '24 11:06 MartyG-RealSense

Hi @Krzo99 Do you require further assistance with this case, please? Thanks!

No, however, I still think it would be a good idea to have it. I'll close the issue.

Krzo99 avatar Jun 03 '24 11:06 Krzo99