Shenzhen Big Tree Technology Co., Ltd.
BIGTREETECH
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4.4. System Settings (CM4)
4.4.1 USB 2.0 Hub Ports
M4P is designed with a USB 2.0 Hub, in order to save power consumption, the USB
port of CM4 is disabled by default. If you want to enable it, you need to add the
following content to the config.txt file:
dtoverlay=dwc2,dr_mode=host
4.4.2 DSI1 Display Interface
The default display interface is HDMI. The onboard DSI port of M4P uses the DSI1
interface. You need to download the DSI1 driver and enter the following sentence in
the command line:
sudo wget https://datasheets.raspberrypi.com/cmio/dt-blob-disp1-cam1.bin -O /boot/dt-blob.bin
After downloading this driver and restarting, the screen of DSI1 will work normally. If
you want to use the HDMI interface, you need to delete the downloaded /boot/dt-
blob.bin driver and restart, then the HDMI can output normally.
4.4.3 CSI1 Camera
The DSI1 driver downloaded in 4.4.2 DSI1 Display Interface also includes the CSI1
driver. If you just want to install the CSI1 driver, not DSI1, please find the driver you
want to use at https://datasheets.raspberrypi.com/licence.html and download it in the
boot folder of CM4 and rename it to dt-blob.bin, and then refer to the settings here.
https://projects.raspberrypi.org/en/projects/getting-started-with-picamera/
5. BIGTREETECH CB1 Setup steps
5.1 Download OS Image
If BIGTREETECH CB1 core board is used, You can only download and install the
system image provided by BIGTREETECH:
https://github.com/bigtreetech/CB1/releases
5.2 Download and Install Raspberry Pi Imager
Install the official Raspberry Pi Imager: https://www.raspberrypi.com/software/
The system image of CB1 can also be written with this software.
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