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CM4-NANO-C (Raspberry Pi CM4 Ultra Mini Expansion Board Type B) is a baseboard that can be used with Raspberry Pi Compute Module 4. Although it is tiny, it can bring out the interface of Raspberry Pi Compute Module 4 with an onboard camera.
1. DO NOT hot-plug any devices except the USB and HDMI. In particular, it is forbidden to install or remove the camera with electricity.
2. As the module does not have any protection, please do not short-circuit the power supply.
3. The USB Type-C interface can be used as a power supply or as a USB SLAVE interface to program the image.
4. In order to ensure the normal power supply of the CM4, please do not connect other devices when using the USB Type-C interface to program the image.
5. Providing 5V 2A for CM4 to ensure that it is in normal use. Otherwise, there may be problems such as automatic shutdown, frequency reduction, and so on.
6. The USB2.0, CSI, and DSI interfaces are disabled by default and need to be enabled by the user.
7. The user key is connected to GPIO21 and pulled up to GPIO_VREF by R16 (10K). When the key is not pressed, GPIO21 is pulled high by default; when the key is pressed, the level of GPIO21 will be pulled down.
Label | Name | Description |
1 | CM4 socket | suitable for all variants of Compute Module 4 |
2 | Micro SD card interface | For inserting a Micro SD card with the system, only for Lite version |
3 | 40PIN GPIO interface | Easy access to various HAT modules |
4 | Power supply/programming interface | 5V/2A power supply, can also be used as eMMC programming interface |
5 | User button | User can program key function, connect to GPIO21 |
6 | USB 2.0 interface | for connecting to all kinds of USB devices |
7 | CAM interface | connect with IMX219-D160 |
8 | DSI | MIPI DSI display interface, connect with CM4 DSI1 interface |
9 | DC buck circuit | DC buck circuit to power 3.3V for DSI, CSI and GPIO |
10 | MINI HDMI | HDMI interface, support 4K 30fps output |
11 | BOOT | ON: Switch the USB to type C interface, and enter the download mode when powered on (configured as a large-capacity disk through rpi boot) OFF: Switch the USB to TYPE A interface, it will not enter the download when powered on (start from eMMC or SD card) |
dtoverlay=dwc2,dr_mode=host
config failed, hub doesn't have any ports! (err -19)
sudo apt-get install p7zip-full wget https://www.waveshare.com/w/upload/4/41/CM4_dt_blob.7z 7z x CM4_dt_blob.7z -O./CM4_dt_blob sudo chmod 777 -R CM4_dt_blob cd CM4_dt_blob/ # if using two cameras and DSI1, execute sudo dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp1-double_cam.dts #When using any DSI, HDMI1 has no image output, even if you do not connect the DSI screen, as long as the corresponding file is compiled, then HDMI1 will not output. #If you need to restore, delete the corresponding dt-blob.bin: sudo rm -rf /boot/dt-blob.bin # After execution, turn off the power and restart the CM4.
Old version (buster)
1. Execute the following command to enter the Raspberry Pi configuration.
sudo raspi-config
2. Choose Interfacing Options and enter.
3. Choose Camera
4.Choose to open the camera interface.
5.The system prompts as follows:
6.Back to the main interface, select Finish.
7.Reboot the system
raspistill -o image.jpg
raspivid -o video.h264 -t 10000
New version (bullseye)
1. Execute the following command to enter the Raspberry Pi configuration.
sudo raspi-config
2. Block or delete the automatic camera detection sentence.
3. Add the driver of the camera you use, here I take IMX219 as an example, and connect it to CAM0, and attach the adapter.
Model | CAM0 Set Sentence | CAM1 Set Sentence |
---|---|---|
OV9281 | dtoverlay=ov9281,cam0 | dtoverlay=ov9281,cam1 |
IMX290/IMX327 | dtoverlay=imx290,clock-frequency=37125000,cam0 | dtoverlay=imx290,clock-frequency=37125000,cam1 |
IMX378 | dtoverlay=imx378,cam0 | dtoverlay=imx378,cam1 |
IMX219 | dtoverlay=imx219,cam0 | dtoverlay=imx219,cam1 |
IMX477 | dtoverlay=imx477,cam0 | dtoverlay=imx477,cam1 |
4. Ctrl+o to save the file and press Enter
5. Ctrl+x to exit the editor.
6. Reboot the Raspberry Pi.
sudo reboot
7. Enter the camera detection command, you can see that the camera has been checked by now.
libcamera-hello --list-cameras
8. Display the camera screen on the desktop.
libcamera-hello -t
7. Taking photos.
libcamera-jpeg -o test.jpg
8. Record a video of 10s.
libcamera-vid -t 10000 -o test.h264