Difference between revisions of "CM4-IO-BASE-B"
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===3D Drawing=== | ===3D Drawing=== | ||
− | *[https://www.waveshare.com/w/upload/ | + | *[https://www.waveshare.com/w/upload/f/fb/CM4-IO-BASE.7z 3D Drawing]<br> |
===Demo codes=== | ===Demo codes=== |
Revision as of 08:37, 9 April 2021
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Overview
This is an IO board for evaluating the Raspberry Pi CM4 or being integrated into end products. the board feature PoE function, it can be used for all variants of CM4.
Precautions for use
1: FAN fans only support 5V fans. 12V is not supported. Confirm the fan voltage before connecting.
2: The DSI display interface is the DSI0 interface, and the DSI1 display interface is not connected.
3: Type C interface can be used for power supply or USB SLAVE interface for burning image.
4: In order to ensure the normal power supply of CM4, please do not connect other devices when using the Type C interface to burn the image.
5: When CM4 is in normal use, it needs to provide 5V 2A power supply for CM4. Otherwise, problems such as automatic shutdown, frequency reduction, etc. may occur.
6: When using the M.2 interface, please use the matching screws. Using screws of other lengths may cause the CM4 core to be damaged by the screws.
7: The module does not have any protection, please do not short-circuit the power supply.
Dimension
Compute_Module 4 POE Board
Compute_Module 4 核心板
What's on board
No. | Component | Description | |
1 | CM4 connector | Suitable for all variants of Compute Module 4 | |
2 | DC power supply/programming interface | 5V/2.5A power supply, also can be used as eMMC programming interface | |
3 | DISP Interface | MIPI DSI Display interface | |
4 | FAN Interface | Convenient access to the cooling fan, support speed regulation and speed measurement | |
5 | CAM Interface | Dual MIPI CSI camera interface | |
6 | HDMI0 Interface | HDMI Interface,Support 4K 30fps output | |
7 | USB 2.0 Interface | 2-channel USB 2.0 Interface, support various USB device insertion | |
8 | Gigabit Ethernet | RJ45 Gigabit Ethernet port, support 10/100 / 1000M network access | |
9 | M.2 indicators | Indicates the working status of the interface | |
10 | ACT indicators | Raspberry Pi operating statusindicator | |
11 | PWR indicators | Raspberry Pi power indicator | |
12 | BOOT | Jumper cap connection:CM4 USB Type C Boot Jumper cap is not connected: eMMC and SD card Boot | |
13 | 40PIN GPIO Interface | Conveniently connect various HAT modules | |
14 | Micro SD Card interface | Used to connect to the Micro SD card with system, only for Lite version | |
15 | HDMI1 interface | HDMI1 Interface,Support 4K 30fps output | |
16 | USB 2.0 interface | USB 2.0 Cable interface, connected through the adapter board | |
17 | FE1.1S | USB HUB chip, USB Interface 1 expand 4 | |
18 | M.2 Interface | Suitable for NVIE solid state drives, or communication modules that support PCIE M.2 interface | |
19 | RTC | Support RTC wake up, shutdown, restart, or other functions | |
20 | RTC interrupt pin switch | PI-RUN: RTC trigger interrupt CM4 restart GN-EN: RTC trigger interrupt CM4 shutdown D4: RTC trigger interrupt D4 pin trigger | |
21 | EMC2301 | Fan controller, control fan speed, measure fan speed | |
22 | RTC Battery connector | Can be connected to CR1220 button battery |
Image Programming
- Write Image for Compute Module Boards eMMC version
- Write Image for Compute Module Boards Lite version
USB2.0
The USB port is disabled by default on the CM4 to save power. If you need to start, you need to add the following to the config.txt file:
dtoverlay=dwc2,dr_mode=host
After restarting
If you use the latest Raspberry Pi OS (image after October 30, 2021) USB2.0 is OTG mode by default, CM4 will report an error:
config failed, hub doesn't have any ports! (err -19)
However, USB can still be used. If you want to remove this error, remove otg_mode=1 in [cm4] of config.txt, and add dtoverlay=dwc2, dr_mode=host (USB cannot be recognized without adding it).
M.2
The M.2 interface type is M KEY, which only supports PCIE channel devices (including NVME solid state, etc.), and does not support SATA hard disks.
Some adapter cards are supported, and the PCIE channel is used. Some devices cannot be driven by the official Raspberry Pi image, and the kernel needs to be recompiled.
RTC FAN
- Note: Please connect the fan before turning on the power of the base board and then complete the test. Please do not connect the fan after the base board is powered on, because the fan control chip has been powered on, otherwise, the chip will be burned!
- Note: Before connecting, please confirm whether the rated voltage of the fan is consistent with the voltage actually connected to the fan.
Please note that DSI and CSI are prohibited when using RTC.
I2C-10 is used by default.
RTC (PCF85063a) on i2c-10, address is 0x51 (7-bit address)
FAN ( EMC2301 ) on i2c-10, address is 0x2f (7-bit address)
If you need to add it to your program instead of the kernel, you can refer to the C and Python demo reference click here.
RTC
sudo nano /boot/config.txt #Add the following lines at the end dtparam=i2c_vc=on dtoverlay=i2c-rtc,pcf85063a,i2c_csi_dsi #Add # in front of dtparam=audio=on #dtparam=audio=on #Save and exit, restart sudo reboot
How to use Hwclock
Synchronize system clock to hardware clock:
sudo hwclock -w
Synchronize hardware clock to system clock:
sudo hwclock -s #The network or the NTP needs to be closed, otherwise it will be changed back.
Set the hardware clock time:
sudo hwclock --set --date="9/8/2021 16:45:05"
View hardware clock:
sudo hwclock -r
Display version information:
sudo hwclock --verbose
Fan
When powered on, the fan will spin for 1 second, then stop for 2 seconds, and then spin again, this is a normal phenomenon.
There is no official configuration method for the fan currently, there is a third-party configuration method: https://github.com/neg2led/cm4io-fan
This method is published by a third party, and we are not responsible for any problems!
sudo apt-get install dkms mkdir -p ~/src cd ~/src git clone https://github.com/neg2led/cm4io-fan.git cd cm4io-fan sudo chmod 777 install.sh sudo ./install.sh #If an error message appears: Your kernel headers for kernel 5.XX.XX-v7l+ cannot be found at #After rebooting the device, you can execute it #The following is the description of config.txt ############################# Name: cm4io-fan Info: Raspberry Pi Compute Module 4 IO Board fan controller Load: dtoverlay=cm4io-fan,<param>[=<val>] Params: minrpm RPM target for the fan when the SoC is below mintemp (default 3500) maxrpm RPM target for the fan when the SoC is above maxtemp (default 5500) midtemp Temperature (in millicelcius) at which the fan begins to speed up (default 50000) midtemp_hyst Temperature delta (in millicelcius) below mintemp at which the fan will drop to minrpm (default 2000) maxtemp Temperature (in millicelcius) at which the fan will be held at maxrpm (default 70000) maxtemp_hyst Temperature delta (in millicelcius) below maxtemp at which the fan begins to slow down (default 2000) #############################
Or directly refer to the following:
dtoverlay=cm4io-fan,minrpm=500,maxrpm=5000,midtemp=45000,midtemp_hyst=2000,maxtemp=50000,maxtemp_hyst=2000
The fan will start to accelerate when the temperature is higher than 45 degrees Celsius, and will up to the highest speed when higher than 50 degrees Celsius.
CSI DSI
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://files.waveshare.com/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/ #If you want to use both cameras and DSI0 sudo dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp0-double_cam.dts #If you want to ue both cameras and DSI1 sudo dtc -I dts -O dtb -o /boot/dt-blob.bin dt-blob-disp1-double_cam.dts #When using any DSI interface, HDMI1 will have no image output, even if you do not connect the DSI screen, as long as you compile the corresponding file, then HDMI1 will not output #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
Recording test
And then connect the cameras and DSI display.
1: Please power off the IO Board first before your connection.
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)
The camera needs to be enabled by raspi-config, enter sudo raspi-config on the terminal, choose Interfacing Options -> Camera -> Yes -> Finish -> Yes, and reboot the system.
- Test the Cameras:
Test camera0:
sudo raspivid -t 0 -cs 0
Test camera1:
sudo raspivid -t 0 -cs 1
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,cam1 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 dtoverlay=imx519,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 for previewing 5 seconds libcamera-hello --camera 1 libcamera-hello --camera 0 #Take a picture libcamera-jpeg -o test.jpg #Record vedio libcamera-vid -t 10000 -o test.h264 #You can add "--camera" to specify the camera. #-t <duration> allows the user to choose how long the window will be displayed in milliseconds.
More instructions click me.
- HDMI1 is disabled if you use DSI interfaces for displaying, even if you just compile the corresponding files without connecting to the DSI screen, please note it.
- Any connection of two HDMI ports can output images, not limited to which HDMI port, if two HDMI screens are connected, only HDMI0 has image output.
- If you want to enable both HDMI, please delete the dt-blob.bin file with the following command:
sudo rm -rf /boot/dt-blob.bin
- Then reboot:
Please refer to Raspberry Pi Manual.
Document
- Schematic
- Raspberry Pi Compute Module 4 IO Board Brief
- Raspberry Pi Compute Module 4 IO Board Datasheet
- CSI Camera Reference
- DSI Display Reference
3D Drawing
Demo codes
Software