TechNexion Cameras for LEX 2NOR01 with JetPack 6.2

Instruction

TechNexion Embedded Vision Solutions provide embedded system developers access to high-performance, industrial-grade camera solutions to accelerate their time to market for embedded vision projects.

Supported Camera Modules

More Camera Products Details...

Supported NVIDIA Jetson Partner Platforms

• LEX 2NOR01

Install TN Camera on NVIDIA Jetson Partner Platforms

Connect to NVIDIA Jetson Partner Platforms

• TEV-RPI22 adaptor for TEVS cameras
  

• VLS-GM2-ORIN-EVK adaptor for TEVS cameras

Using TechNexion Pre-built modules

Preparation

We recommend following the user manual from platform vendors to setup system.

After that, you can follow the below method to install TechNexion Cameras Driver.

1. Download pre-built modules.
   

   $ wget https://download.technexion.com/demo_software/EVK/NVIDIA/2NOR01/pre-built-modules/latest/JP62/tn_camera_modules_jp62.tar.gz

2. Uncompress the modules.
   

   $ tar -xf tn_camera_modules_jp62.tar.gz

3. Run installation script.

   $ cd tn_camera_modules_<built_time>/
   $ ./tn_install.sh

4. After you agree to continue the installation, the module will be installed to the system.
   

   $ ./tn_install.sh
   ****** TechNexion Camera Driver Installation ******
   This installation is easy to install TechnNexion Camera Drivers for Nvidia
   Jetson Orin Nano Platform. Before start to install camera driver,
   You should BACKUP your image to avoid any file you lost while installing process.
   Do you want to continue?[Y/n]Y
   Continuing with the installation...
   Install TN-CAM modules: max96724.ko
   Install TN-CAM modules: max96717.ko
   Install TN-CAM modules: tevs.ko
   Install TN-CAM DTBO file: tevs-dual
   Installed TN-CAM DTB file Done.
   Install TN-CAM DTBO file: vls-gm2
   Installed TN-CAM DTB file Done.
   Install TN-CAM DTBO file: vls-gm2-fsync
   Installed TN-CAM DTB file Done.
   Install TN-CAM DTBO file: vls-gm2-tunnel
   Installed TN-CAM DTB file Done.
   Install TN-CAM DTBO file: vls-gm2-tunnel-fsync
   Installed TN-CAM DTB file Done.
   Select modules:
       [1]: TEVS: TEVS Series MIPI Cameras with TEV-RPI22 Adaptor
       [2]: VLS-GM2: VLS-GM2 Series Cameras with VLS-GM2-ORIN-EVK Adaptor
   Which modules do you select?[default:1]

   Note: You should reboot the device after installation.

Bring up Camera

TechNexion VizionViewer

VizionViewer™

Gstreamer

If you succeed in initialing the camera, you can follow the steps to open the camera.

1. Check the supported resolutions:
   

   $ gst-device-monitor-1.0 Video/Source
   Probing devices...
   
   Device found:
   
           name  : vi-output, tevs 9-0048
           class : Video/Source
           caps  : video/x-raw, format=UYVY, width=640, height=480, framerate=60/1
                   video/x-raw, format=UYVY, width=1280, height=720, framerate=60/1
                   video/x-raw, format=UYVY, width=1280, height=800, framerate=60/1
                   video/x-raw, format=NV16, width=640, height=480, framerate=60/1
                   video/x-raw, format=NV16, width=1280, height=720, framerate=60/1
                   video/x-raw, format=NV16, width=1280, height=800, framerate=60/1
                   video/x-raw, format=UYVY, width=640, height=480, framerate=60/1
                   video/x-raw, format=UYVY, width=1280, height=720, framerate=60/1
                   video/x-raw, format=UYVY, width=1280, height=800, framerate=60/1
           properties:
                   object.path = v4l2:/dev/video0
                   device.api = v4l2
                   media.class = Video/Source
                   api.v4l2.path = /dev/video0
                   api.v4l2.cap.driver = tegra-video
                   api.v4l2.cap.card = "vi-output\,\ tevs\ 9-0048"
                   api.v4l2.cap.bus_info = platform:tegra-capture-vi:0
                   api.v4l2.cap.version = 5.15.148
                   api.v4l2.cap.capabilities = 84200001
                   api.v4l2.cap.device-caps = 04200001
                   device.id = 34
                   node.name = v4l2_input.platform-tegra-capture-vi
                   node.description = "vi-output\,\ tevs\ 9-0048"
                   factory.name = api.v4l2.source
                   node.pause-on-idle = false
                   factory.id = 10
                   client.id = 32
                   clock.quantum-limit = 8192
                   media.role = Camera
                   node.driver = true
                   object.id = 35
                   object.serial = 35
           gst-launch-1.0 pipewiresrc path=35 ! ...
   

2. Bring up the camera (/dev/video0) with 1280x720 by Gstreamer pipeline:
   

   $ DISPLAY=:0 gst-launch-1.0 v4l2src device=/dev/video0 ! \
   "video/x-raw, format=UYVY, width=1280, height=720" ! xvimagesink sync=false
   

Troubleshooting

1. Cannot find cameras
   If you cannot bring up the cameras, you can check if the video device does exist.
   

   $ ls /dev/video*  # List all video devices
   /dev/video0  /dev/video1
   

   If you cannot see the devices, you should check if the drivers have been probed.

2. Occur Error: Could not get EGL display connection
   If you occurred the errors nvbufsurftransform: Could not get EGL display connection by rununing the Gstreamer command, you can modify the parameter DISPLAY by the command:
   

   # Check and Set environment parameter for 'DISPLAY'
   $ export DISPLAY=$(w| tr -s ' '| cut -d ' ' -f 3 | grep :)
   # Run Gstreamer pipeline
   $ gst-launch-1.0 v4l2src device=/dev/video0 ! \
   "video/x-raw, format=UYVY, width=1280, height=720" ! xvimagesink sync=false

3. CPU overload when camera streaming
   If you open the camera stream and find that the CPU load is too large, it may be because Gstreamer does not use the GPU.
   You have to install some NVIDIA plug-in tools on Gstreamer.
   

   $ sudo apt update && apt depends nvidia-jetpack | awk '{print $2}' | uniq | xargs -I {} bash -c "sudo apt -o Dpkg::Options::="--force-confold" -y install {} ; sudo apt clean"