Raspberry Pi CM4-to-Pi4-Adapter User Guide

Introduction

This is a CM4 To Pi 4B Adapter for Raspberry Pi and is an alternative solution for Raspberry Pi 4B. Onboard 4 x USB3.0 ports, Gigabit Ethernet port, PoE header, and so on.

Features

• Onboard standard CM4 connector, support access to CM4 Lite / eMMc series boards with Quad Core Cortex A72 64-bit processor, more powerful performance
• Easily compatible with the interfaces of Raspberry Pi 4B board, the DISPLAY port position is inconsistent with the main board of Raspberry Pi 4B
• Onboard 4-ch USB 3.0 ports, compatible with USB 2.0 / 1.1 transmission
• Onboard RJ45 Gigabit Ethernet port, 10 / 100 / 1000 M adaptive
• Onboard PoE header, for connecting PoE HATs
• DSI interface is DSI1
• USB Type C interface is for the power supply or can be used as the USB SLAVE interface for programming images
• Do not connect to other devices when using the micro USB port to program the image for ensuring the power supply of CM4
• CM4 must be provided by 5V 2A, or it will shut down, lower frequency, etc.

Dimensions

CM4-to-Pi4-Adapter

Compute_Module 4

Onboard Resources

Note

Do not plug and unplug any devices when powering on.

Image Programming

• Write Image for Compute Module Boards eMMC version
• Write Image for Compute Module Boards Lite version

Fan Header

The default is no welding, without speed regulation and speed measurement, controlled by GPIO18 (BCM code).

CSI

Configuration File

CSI and DSI are disabled by default. When using the camera and DSI, it will occupy three I2C devices: I2C-10, I2C-11, and I2C-0.

• Open a terminal and run the following commands:
  

wget https://www.waveshare.com/w/upload/7/75/CM4_dt_blob_Source.zip
 unzip -o  CM4_dt_blob_Source.zip -d ./CM4_dt_blob_Source
 sudo chmod 777 -R CM4_dt_blob_Source
 cd CM4_dt_blob_Source/
 sudo  dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp0-double_cam.dts
 #If you need to restore, please delete the corresponding dt-blob.bin: sudo rm -rf /boot/dt-blob.bin
 # After execution, turn off the power and restart the CM4

Record Test

Connect the cameras:
1: Please power off the IO Board first before connecting.
2: Connect the power adapter after connecting the cameras and DSI display.
3: Wait a few seconds before the screen boot up.
4: If the DSI LCD cannot display, please check if you have added /boot/dt-blob.bin. If there already has the dt-blob.bin, just try to reboot.

Old Version (Buster)

Run the "raspi-config" in the camera, choose Interfacing Options->Camera->Yes->Finish-Yes, reboot the system, open "enable camera", and then reboot to save the change.

• Test the Cameras:
  

Test camera:

sudo raspivid -t 0 -cs 0

New Version (Bullseye)

If you are using the latest Raspberry Pi OS (Bullseye):

#Use dual cameras in the new system
#Remove "camera_auto_detect=1" in config.txt
#camera_auto_detect=1

#Add
dtoverlay=imx219,cam0

#imx219 is the model of the camera sensor, and it also supports other sensors.
dtoverlay=ov5647,cam0
dtoverlay=imx219,cam0
dtoverlay=ov9281,cam0
dtoverlay=imx477,cam0

#Then reboot
reboot

#Open the camera 
libcamera-hello -t 0
or
libcamera-hello

#Other commands:
#Check whether the camera is detected
libcamera-hello --list-cameras

#Open the corresponding camera
libcamera-hello  --camera 0

#Take a picture
libcamera-jpeg -o test.jpg

#You can add "--camera" to specify the camera

More instructions click me.
Please refer to Raspberry Pi Manual.

Official Documents

• CM4 datasheet

Schematic Diagram

• CM4-to-Pi4-Adapter_SchDoc

3D Diagram

• CM4-to-Pi4-Adapter-3D.zip

Program

• CM4 Code.zip

Software

• Rpiboot setup.zip
• Panasonic SDFormatter.zip
• Win32DiskImager.zip
• Putty.zip

To：

Dear Customers, There may be a lag of several hours before we could process your order, depending on the time difference between your location and ours. Sincerely hoping your understanding!

Email(support)

services01@spotpear.com