Unable to Detect Camera over Jetson Nano

[arpit6232]

Environment Details :
Board : Jetson Nano ( Developer Kit )
Branch : dunfell-l4t-r32.4.3
Commit Hash : d5348114b0a9acd42a473aa4542a19f27f3a2a2c
Camera Connected #1 : Logitech C270
Camera Connected #2 : Raspberry Pi Camera V2.1
Image : demo-image-full
Yocto Setup : . ./setup-env --machine jetson-nano-qspi-sd

The intention was to use either Logitech C270 Camera or Raspberry Pi Camera using gstreamer for image processing. I ran into this issue where the Image built does not recognize either of the camera. The Camera are functioning correctly and were tested on NVIDIA Image binaries on the official website JP 4.3 version, but also failed on JP 4.5.1.

Below was found on the Yocto build for the Jetson Nano. I have attached the dmesg on the Jetson Nano , with and without the camera attached. The camera are not detected under /dev/ which should be /dev/video to be used by gstreamer.

[dwalkes]

@arpit6232 since you've noticed this issue with stock nvidia jetpack you might want to cross post on the NVIDIA developer forum

[arpit6232]

Absolutely.

[ichergui]

Hey @arpit6232

Nvidia provides additional TARBALL that contains (binaries, library and DTB ) from Jetpack 4.4.1 / L4T-R32.4.4, this is specific for RPI HQ Camera (IMX477 sensor support). Please check here.

Here is the RPI camera HQ

I'm not sure about the connection between the camera (Logitech C270) and the Jetson Nano, maybe you are using USB, right ?
Concerning the RPI camera, I assume that is connected through CSI.

Please check the kernel config file and enable the drivers needed, you may have to update the dtb as well. I have the RPI camera v2 that I can try it later with my Jetson Nano. I will let you know.

Here is the RPI cameras

Could you please share the one that you are using ?

[arpit6232]

I am using the CSI module for the raspberry Pi camera .
Upon little tweaks as you suggested I got the Raspberry Pi Camera setup showing under /dev, But could not see anything for the USB Camera.

[ichergui]

Please see @madisongh suggestion

[madisongh]

Probably best to start with making sure the kernel is recognizing the hardware and the appropriate drivers are getting loaded. Can you post the dmesg or journalctl -k -b output? Does the Logitech show up in lsusb output?

[arpit6232]

The USB Camera gets detected under lsusb . The dmesg output looks like in the image below. But does not get recognized under /dev/video . I checked for if there were any udev issues, But it seemed to have to located correctly.

image

[madisongh]

Are you adding kernel-module-uvcvideo to your build? I have a C930e which has worked fine for me, but since the uvcvideo driver is built as a module, rather than into the kernel, I have to explicitly add it to my images.

[arpit6232]

I believe that is part of openEmbedded layer. As per the below image.

Despite that I added the kernel-module-uvcvideo but it still does not seem to detect it USB Camera (Logitech C270).

[madisongh]

So check lsmod output on the Jetson to see if the module got loaded into the kernel, and look at the kernel log messages (from dmesg or journalctl -k -b) to look for the USB bus probing, to see if it identifies the device, and to see if there is any output from the uvcvideo driver.