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The Raspberry Pi Foundation has updated several versions recently;
The Raspberry Pi Foundation has updated several versions recently;


The use guide of C779/C790/X630 depends on the official Raspberry Pi OS version you are using. Different versions have different usage methods. If you have some questions, please contact us and attach the osversion you are using.(<span style="color:red;">Email: support@geekworm.com</span>)
The use guide of [[C779]]/[[C790]]/[[X630]] depends on the official Raspberry Pi OS version you are using. Different versions have different usage methods. If you have some questions, please contact us and attach the osversion you are using.(<span style="color:red;">Email: support@geekworm.com</span>)


You can refer to [https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=281972 Raspberry pi official forum post]
You can refer to [https://www.raspberrypi.org/forums/viewtopic.php?f=38&t=281972 Raspberry pi official forum post]
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  sudo apt-get upgrade
  sudo apt-get upgrade


2. Enable camera module (the camera is enabled by default in Raspberry pi Bullseys OS)
2. Enable camera module (the camera is enabled by default in Raspberry pi '''Bullseys/Bookworm''' OS)
  sudo raspi-config
  sudo raspi-config


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3. Edit /boot/config.txt (that will need sudo)
3. Edit /boot/config.txt (that will need sudo)
  sudo nano /boot/config.txt
  sudo nano /boot/firmware/config.txt


Add the line:
Add the line:
  dtoverlay=tc358743
  dtoverlay=tc358743


Add the line if your shield support audio like C790
Add the line if your CSI module supports audio also like '''C790'''
  dtoverlay=tc358743-audio
  dtoverlay=tc358743-audio


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  pi@raspberrypi:~ $ dmesg | grep cma
  pi@raspberrypi:~ $ dmesg | grep cma
  [    0.000000] cma: Reserved 256 MiB at 0x000000001ec00000
  [    0.000000] cma: Reserved 256 MiB at 0x000000001ec00000
If it reports less than 96MB assigned to CMA, then please '''''/boot/cmdline.txt''''' as following:
If it reports less than 96MB assigned to CMA, then please '''''/boot/firemare/cmdline.txt''''' as following:
  sudo nano /boot/cmdline.txt
  sudo nano /boot/firmware/cmdline.txt
then  add <code>cma=96M</code> to the start of the line.  
then  add <code>cma=96M</code> to the start of the line.  


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If all is well you should get a /dev/video0 device, and "v4l2-ctl --list-devices" will tell you that it is provided by Unicam.
If all is well you should get a /dev/video0 device, and "v4l2-ctl --list-devices" will tell you that it is provided by Unicam.
After connecting all the cables, power on the Raspberry Pi, the C779/C790 indicator light is normally green, and after opening the Raspberry Pi terminal, enter the following command:
After connecting all the cables, power on the Raspberry Pi, the C779/C790 indicator light is normally green, and after opening the Raspberry Pi terminal, enter the following command:
pi@raspberrypi:~ $ ls /dev/video0
/dev/video0
<pre>
<pre>
pi@raspberrypi:~ $ ls /dev/video0
pi@geekworm:~ $ v4l2-ctl --list-devices
/dev/video0
pi@raspberrypi:~ $ v4l2-ctl --list-devices
bcm2835-codec-decode (platform:bcm2835-codec):
bcm2835-codec-decode (platform:bcm2835-codec):
/dev/video10
/dev/video10
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/dev/video12
/dev/video12
/dev/video18
/dev/video18
/dev/media1
/dev/video31


bcm2835-isp (platform:bcm2835-isp):
bcm2835-isp (platform:bcm2835-isp):
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/dev/video15
/dev/video15
/dev/video16
/dev/video16
/dev/video20
/dev/video21
/dev/video22
/dev/video23
/dev/media0
/dev/media0
/dev/media2


unicam (platform:fe801000.csi):
unicam (platform:fe801000.csi):
/dev/video0
/dev/video0
/dev/video1
/dev/media4
/dev/media2
 
rpi-hevc-dec (platform:rpi-hevc-dec):
/dev/video19
/dev/media3
 
bcm2835-codec (vchiq:bcm2835-codec):
/dev/media1
</pre>
</pre>


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should now reflect the resolution detected.
should now reflect the resolution detected.


8. The chip supports two formats - RGB3(the default) and UYVY. RGB3 is 24bpp, and UYVY is YUV4:2:2 16bpp.
8. Test video recording
 
  v4l2-ctl --verbose -d /dev/video0 --set-fmt-video=width=1280,height=720,pixelformat='RGB3' --stream-mmap=4 --stream-skip=3 --stream-count=2 --stream-to=csitest.yuv --stream-poll
Over the normal 2 CSI-2 lanes the data rate is such that RGB3 can run at a maximum of 1080p30, whilst UYVY will go up to 1080p50. Use the following command to select UYVY, however your application may override that.
The above command will capture frames and save to /home/pi (filename: csitest.yuv)
  v4l2-ctl -v pixelformat=UYVY
 
9. Check that the audio drivers / card is available to ALSA.
<pre>
pi@raspberrypi:~ $ arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: tc358743 [tc358743], device 0: bcm2835-i2s-dir-hifi dir-hifi-0 [bcm2835-i2s-dir-hifi dir-hifi-0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
</pre>
Note: <span style="color:red;">card 1</span> means that the card number for the TC358743XBG is "1" and it might be different.
 
10. Install GStreamer tool;
sudo apt install gstreamer1.0-tools
 
Check gstreamer tool version:
<pre>
pi@raspberrypi:~ $ gst-launch-1.0 --version
gst-launch-1.0 version 1.18.4
GStreamer 1.18.4
http://packages.qa.debian.org/gstreamer1.0
</pre>
 
<span style="color:red;">Note: </span>
 
Different versions have different command line parameters, which is very annoying.
 
11. Use gstreamer to record video and audio
#GStreamer v1.14 command
gst-launch-1.0 v4l2src io-mode=5 ! video/x-raw, format=UYVY, framerate=25/1 ! v4l2h264enc output-io-mode=4 ! video/x-h264,profile=high ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv alsasrc device=hw:1 ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.
 
foo.mkv is the output file.
 
If your gstreamer is version 1.8 or above, you can try the following test command. In addition, alsasrc device=hw:1 represents the sound card of TC358743, you can use "arecord -l" to query.
 
#The command to recode a video with audio. (GStreamer 1.18.4)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,<span style="color:red;">framerate=30/1</span>,format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv alsasrc device=hw:1 ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.
 
#The sample command to recode a video without audio. (C779 doesn't support audio)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=30/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv
 
Press CTRL+C to end recording.
 
PS:  We recommend that you modify the above '''<span style="color:red;">framerate</span>''' parameter to the actual frame rate of your HDMI signal, the actual frame rate value is from the result of ''''v4l2-ctl --query-dv-timings'''' command.
[[File:Csi-framerate.png|none]]
 
For the above HDMI device, because the frame rate is 60, so we modify the framerate parameter to 60 like the followint command.
 
Record the video only:
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=60/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv
 
Record the video and audio: (if your shield supports audio also)
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,'''<span style="color:red;">framerate=60/1</span>''',format=UYVY" ! v4l2h264enc extra-controls="controls,h264_profile=4,h264_level=13,video_bitrate=256000;" ! "video/x-h264,profile=high, level=(string)4.2" ! h264parse ! queue ! matroskamux name=mux ! filesink location=foo.mkv <span style="color:red;">alsasrc device=hw:1</span> ! audio/x-raw,rate=48000,channels=2 ! audioconvert ! avenc_aac bitrate=48000 ! aacparse ! queue ! mux.


Note: <span style="color:red;">alsasrc device=hw:1</span> - "'''1'''" means the audio card number, You must change to correct audio card number.(Query the car number via ''''arecord -'''l', refer to step 9)
9. To play the YUV file on Raspberry Pi OS desktop, use FFplay. (Run the following command on local terminal window, Not work if executing the command from SSH).
ffplay -f rawvideo -video_size 1280x720 -pixel_format bgr24 csitest.yuv


12. For old raspberry pi os, you can use [[Raspistil]] to take photo.
'''If you have other tutorials, please leave them in the comments.'''


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