AM62P CSI
This page is using the default release am62p-yocto-scarthgap-6.6.58_10.01.10.04-v1.0.
To view this page for a specific Variscite SoM and software release, please follow these steps:
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Testing MIPI-CSI2 cameras
Camera Probe
Run the following command to see if you have the camera(s) detected
# v4l2-ctl --list-devices
This should produce the following output
j721e-csi2rx (platform:30102000.ticsi2rx): /dev/video2 /dev/video3 /dev/video4 /dev/video5 /dev/video6 /dev/video7 /dev/media0 wave5-dec (platform:30210000.video-codec): /dev/video0 /dev/video1
The camera interface is /dev/video2
Testing Camera Preview on Display
The pipeline is configured individually by the user-space application.
At a minimum, the pixel format, resolution, and framerate must be configured:
# cam -c1 --stream <resolution>,pixelformat=UYVY -C1
After configuring the pipeline, it can be confirmed by reading it back:
# media-ctl --get-v4l2 '"ov5640 0-003c":0'
The following examples show how to preview the camera on the display for different resolutions:
Template:AM62P CAM PREVIEW Template:AM62P CAM PREVIEW Template:AM62P CAM PREVIEW Template:AM62P CAM PREVIEW Template:AM62P CAM PREVIEW Template:AM62P CAM PREVIEW
Testing Camera JPEG Snapshot
To capture JPEG snapshot run one of the pipelines below depending upon the required picture resolution.
- VGA 640x480:
# cam -c1 --stream width=640,height=480,pixelformat=UYVY -C1 # yavta -c1 -n5 -Fframe.raw -s 640x480 -f UYVY /dev/video2 # ffmpeg -f rawvideo -pixel_format uyvy422 -video_size 640x480 -i frame.raw -frames:v 1 test_640x480.jpg # rm frame.raw
- NTSC 480p 720x480:
# cam -c1 --stream width=720,height=480,pixelformat=UYVY -C1 # yavta -c1 -n5 -Fframe.raw -s 720x480 -f UYVY /dev/video2 # ffmpeg -f rawvideo -pixel_format uyvy422 -video_size 720x480 -i frame.raw -frames:v 1 test_720x480.jpg # rm frame.raw
- HD 720p 1280x720:
# cam -c1 --stream width=1280,height=720,pixelformat=UYVY -C1 # yavta -c1 -n5 -Fframe.raw -s 1280x720 -f UYVY /dev/video2 # ffmpeg -f rawvideo -pixel_format uyvy422 -video_size 1280x720 -i frame.raw -frames:v 1 test_1280x720.jpg # rm frame.raw
- Full HD 1080p 1920x1080:
# cam -c1 --stream width=1920,height=1080,pixelformat=UYVY -C1 # yavta -c1 -n5 -Fframe.raw -s 1920x1080 -f UYVY /dev/video2 # ffmpeg -f rawvideo -pixel_format uyvy422 -video_size 1920x1080 -i frame.raw -frames:v 1 test_1920x1080.jpg # rm frame.raw
- QSXGA 1944p 2592x1944:
# cam -c1 --stream width=2592,height=1944,pixelformat=UYVY -C1 # yavta -c1 -n5 -Fframe.raw -s 2592x1944 -f UYVY /dev/video2 # ffmpeg -f rawvideo -pixel_format uyvy422 -video_size 2592x1944 -i frame.raw -frames:v 1 test_2592x1944.jpg # rm frame.raw