Raspberry Pi HQ camera with Jetson Nano

[andrii.mikhno.ds]

Hello everyone,

I am trying to connect the Raspberry Pi HQ camera to the Jetson Nano.

I have configured the pins under jetson-io (both options with IMX477 were tested) and tried to launch a variety of commands like this:
gst-launch-1.0 nvarguscamerasrc sensor-id=0 ! ‘video/x-raw(memory:NVMM),width=1920, height=1080, framerate=30/1, format=NV12’ ! nvvidconv ! ‘video/x-raw(memory:NVMM),format=I420’ ! fpsdisplaysink text-overlay=0 video-sink=fakesink sync=0 -v

Unfortunately I always get an error message like this (No cameras available):

The connection is simple:

Attached you can also find kernel init messages:
klogs.txt (62.4 KB)

I would be very grateful if you could help me to solve the problem. Is the removing of R8 on the camera the only option?

Many thanks in advance
Andrii

[ShaneCCC]

Looks like unable communicate with sensor via i2c. Please remove R8 to try.

[    1.665762] tegra-vii2c 546c0000.i2c: no acknowledge from address 0x1a
[    1.665835] imx477 7-001a: imx477_board_setup: error during i2c read probe (-121)

Thanks

[andrii.mikhno.ds]

Hello ShaneCCC,

R8 was removed today. Now it seems to work partly.

Attached you can find klogs and output in terminal for the command mentioned before (camera window doesnt open):
output_camera.txt (7.6 KB)
klogs (1).txt (66.4 KB)

After that i tested CSI code from CSI Module. The command ( ‘gst-launch-1.0 nvarguscamerasrc sensor_id=0 ! nvoverlaysink’) and C++ program worked for me without any problems!!!, but by running python i am getting next error:
andrii@andrii-desktop:~/PythonProjects/CSI-Camera$ python simple_camera.py
nvarguscamerasrc sensor-id=0 ! video/x-raw(memory:NVMM), width=(int)1920, height=(int)1080, framerate=(fraction)60/1 ! nvvidconv flip-method=0 ! video/x-raw, width=(int)960, height=(int)540, format=(string)BGRx ! videoconvert ! video/x-raw, format=(string)BGR ! appsink
Error: Unable to open camera

The same happens in my own script:

I tried to use different values for width and height, but nothing worked.

Do you have any ideas what i am doing wrong (of course except of sitting in front of screen :) )?

[ShaneCCC]

Do you installed OpenCv?

GitHub - thehapyone/NanoCamera: A simple to use camera interface for the...

[andrii.mikhno.ds]

Yes, i also tried both: opencv-python and opencv-contrib-python. Starting of the CSI_camera.py script in mentioned module throws the next exception:

It looks really strange: everything works when i am starting it from terminal via gst-launch… but the same command is not recognised in python scripts (error messages: unable to open camera or Assertion failed)

Do you know what else i can try?
Thanks

[andrii.mikhno.ds]

As info: Python Version 3.8.0, open-cv 4.8.1

[ShaneCCC]

Please check if opencv from python has gstreamer support with

import cv2
# Check for gstreamer support from opencv
import re
print('GStreamer support: %s' % re.search(r'GStreamer\:\s+(.*)', cv2.getBuildInformation()).group(1))

Once the python opencv library supports gstreamer backend, it should work with the pipeline from his simple_camera.py script.
His own script pipeline is wrong as it doesn’t feed appsink.
Also you may advise to check if the VideoCapture successfully opened (cam.isOpened()) before trying to use it.

[andrii.mikhno.ds]

The answer was NO, cam.isOpened() returned False.
I unistalled opencv and followed these steps to install it with GStreamer. Now everything works fine. Thanks a lot!