No "running" status message when using specific device user id

[landersson]

Hi,

What's the reason for only publishing a "running" status message if pylon_camera_parameter_set_.deviceUserID() is empty?

pylon-ros-camera/pylon_ros2_camera_component/src/pylon_ros2_camera_node.cpp

Line 615 in e22aa7f

if (this->pylon_camera_ != nullptr && this->pylon_camera_parameter_set_.deviceUserID().empty())

I'm trying to add support for plug-and-play autodetection of Basler cameras. I launch a ros2 driver instance for each camera, using the device_user_id parameter to make the driver wait for a particular camera to become available. But with the logic applied on the line linked above, I never get a "running" status messager, because pylon_camera_parameter_set_.deviceUserID() is not empty.

[FrancoisPicardDTI]

Hello @landersson
Maybe can you suggest some changes through a dedicated pull request?

[FrancoisPicardDTI]

Hello @landersson
Trying to reproduce the problem here.

What I did on my side:

• My launch file points to one given .yaml file where I have specified the user id of the camera I want to connect
• I am launching a ros2 drive instance, through this launch file, and it connects to the specified camera
• If I am unplugging it and then plugging it again, the driver connects to the camera without any problem
• If I am launching the instance with the camera unplugged, and then plug it, the driver connects to the camera

So in your setup:

• Where do you specify this device user id?
• How do you start the driver exactly?