Problem with v4l2 and property settings...

# 1 week ago
physicsyu	Hi. After the install i finally export device server with help from here. And i thought i can handle rest of it. but after 5 hours i realize I have another problem that obviously can't handle alone. This is my situation now… I tried to run live viewer. but this happened. To figure out what's going on my terminal I opened LimaCCDs.py and assume that i have a problem with reading my last image. but can't solve nothing from it. And about "Can't set exposure timePermission denied" line. There's no hint at all (At least in tango, Lima folder.) I'm so ashamed but have to ask about it… How can I solve this error(s)? I am using Ubuntu 22.04 and working with Lima and Tango together. Right now, I am trying to use v4l2 through LimaCCDs, but I am getting exhausted due to continuous errors. this is monitor panel. Edited 1 week ago Attachments:

# 1 week ago

Hi. After the install i finally export device server with help from here.
And i thought i can handle rest of it.
but after 5 hours i realize I have another problem that obviously can't handle alone.

This is my situation now…

I tried to run live viewer. but this happened.
To figure out what's going on my terminal I opened LimaCCDs.py and assume that i have a problem with reading my last image.
but can't solve nothing from it.

And about "Can't set exposure timePermission denied" line. There's no hint at all (At least in tango, Lima folder.)

I'm so ashamed but have to ask about it… How can I solve this error(s)?

I am using Ubuntu 22.04 and working with Lima and Tango together.
Right now, I am trying to use v4l2 through LimaCCDs, but I am getting exhausted due to continuous errors.

this is monitor panel.

Edited 1 week ago

# 3 days ago
alejandro.homs	Hi @physicsyu, Thanks a lot for asking for help when using Lima/Tango ;). As you probably know, the V4L camera plugin uses the HwVideoCtrlObj interface. I am not very familiar with it, but I understand that it is mainly intended to work in "live" mode. From your screenshots we see that the "video_live" LimaCCDs attribute returns "True", but it is actually no checked. Did you try to manually activate the "video_live" mode? Kind regards Alejandro Edited 3 days ago

# 3 days ago

alejandro.homs

Hi @physicsyu,

Thanks a lot for asking for help when using Lima/Tango ;).

As you probably know, the V4L camera plugin uses the HwVideoCtrlObj interface. I am not very familiar with it, but I understand that it is mainly intended to work in "live" mode. From your screenshots we see that the "video_live" LimaCCDs attribute returns "True", but it is actually no checked. Did you try to manually activate the "video_live" mode?

Kind regards

Alejandro

Edited 3 days ago

# 1 day ago
physicsyu	Alejandro Dear Alejandro. You are truly genius. (and I am a fool) That is my first image. Thank you!!!! Have a nice year! and more! Attachments: