HDMI to CSI Adapter
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Introduction
This is an HDMI to CSI camera port adapter designed for Raspberry Pi with up to 1080p@30fps support from HDMI input, backward compatible. It allows you to use HDMI cameras just as the standard Raspberry Pi CSI cameras, all versions of Raspberry Pi series boards are supported.
Parameters
- Controller: TC358743XBG
- Input signal:
- Video: HDMI1.4, RGB888, supports up to 1080p@30
- Audio: HDMI audio
- Output signal:
- Video: 2 lanes MIP CSI-2
- Audio: I2S audio output, LPCM format
- OS: Raspberry Pi OS
- Working voltage: 3.3V
- Working temperature: -30° ~ 70°C
Connection
- Video
Connect the FPC cable of Raspberry Pi to the CSI interface of Raspberry Pi. The CSI interface of Pi 2B, 3B, and 3B+ is located between the LAN port and HDMI port. The CSI interface of Pi 4 is placed between the HDMI1 interface and the audio jack. If you use Pi zero, the CSI interface is beside the Power port. Here is the diagram of Pi 4. 4B.
Note that the silver side (metal side) should be toward the HDMI interface. Release the black buckle, align the FPC cable, and insert it tightly, then close the black buckle.
- Audio
To use the audio, you need to jumper wire the following GPIO to the I2S pins of the Raspberry Pi board.
| HDMI to CSI | Raspberry Pi |
|---|---|
| WFS | (PIN35) GPIO19 |
| SCK | (PIN12) GPIO18 |
| SD | (PIN38) GPIO20 |
| GND | GND |
Software Setup
Note: HDMI to CSI camera does not support Libcamera driver.
- Modify config.txt file:
sudo nano /boot/config.txt
Add the following sentences to the end of the file.
dtoverlay=tc358743 dtoverlay=tc358743-audio
Save the file.
- Modify cmdline.txt:
sudo nano /boot/cmdline.txt
Add the following content to the file.
cma=96M
- Download and install the driver demo.
cd wget https://files.waveshare.com/upload/8/89/TC358743-Driver.zip unzip TC358743-Driver.zip cd ~/TC358743-Driver sudo sh set_edid.sh
- Reboot the system.
sudo reboot
Test the video
yavta
cd ~/TC358743-Driver/yavta/yavta/ ./yavta --capture=1000 -n 3 --encode-to=file.h264 -f UYVY –m -T /dev/video0
- The codes will capture 100 framerates and save them to the "file.h264" file, you can use vlc tool to play the file.
gstreamer
- Install the tool.
sudo apt install gstreamer1.0-tools -y
- Collect video:
gst-launch-1.0 -vvv v4l2src ! "video/x-raw,framerate=30/1,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=file.mkv
Extend Computer Screen to Raspberry Pi
If you use this function, you need to delete the driver file, delete the configuration of dtoverlay, and only do the following configuration.
- Modify the cmdline.txt file:
sudo nano /boot/cmdline.txt
Add the following to the end of the first line of the file:
cma=96M
Save.
- Then open "legacy camera" by the following steps:
sudo raspi-config
Select Interface Options -> Legacy Camera -> Yes, exit, and then reboot.
- Boot terminal to operate:
raspistill -t 0
Recording
- Check the audio devices with arecord -l command.
**** List of CAPTURE Hardware Devices **** card 2: 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
- Note: Card 2 is the ID of the sound card.
- Record the audio and save it as a wav file.
arecord -D hw:2 -d 25 -f cd test1.wav
Note: where hw:2 is to set the sound card device, it needs to match the actual sound card number, otherwise the audio information cannot be collected normally.
Resources
Driver
Support
Technical Support
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