Exposure time longer than 750 ms

Autonomous Machines Jetson & Embedded Systems Jetson TX2
#1

Hello!

I have made Sony sensor driver for the TX2 and I can’t seem to get exposure time longer than about 750 ms. I have noticed on all other cameras, which are supported by default, that the exposure time in Argus can’t be set more than about 1 second.

I need to get at least 5 second exposure times on image capture. Judging by the fact that the exposure settings work on my driver correctly and it just freezes when I set it to more than about 750 ms in Argus camera, for example - it probably has to do something with the Jetson. Is it something to do with ISP? I really need to get this to work.

Thanks!

#3

When the exposure too much cause the frame rate to low would cause capture failed due to timeout.
Have a try below command before start camera APP.

sudo service nvargus-daemon stop
sudo enableCamInfiniteTimeout=1 nvargus-daemon
1 Like
#4

Wow, thank you very much for this! This was the last thing on my project and now I can capture long exposure images. :)

By the way, there’s sometimes the frames twitch for couple of frames at random. Is this something about when the framerate is not completely in sync with the exposure time?

#5

Maybe, you can confirm if raw data from v4l2-ctl

#6

What do you mean by ‘if raw data’?

#7

Below command can capture raw data from sensor without ISP process. But you need to configure the exposure first.

v4l2-ctl -d /dev/video0 --set-fmt-video=width=1920,height=1080,pixelformat=RG10 --set-ctrl bypass_mode=0 --stream-mmap --stream-count=20 --stream-to=test.raw