Compute Module 4 PoE Board (B)

From Waveshare Wiki
Revision as of 11:59, 1 July 2021 by Waveshare-eng11 (talk | contribs) (Created page with "<div class="tabber"> <div class="tabbertab" title="Introduction"> {{infobox item| |name=Compute Module 4 PoE Board (B) |img=File:Compute-Module-4-PoE-Board-B-1.jpg|400px|alt...")
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
Compute Module 4 PoE Board (B)
Compute Module PoE Board (B)

Raspberry Pi Compute Module 4 IO Board With PoE Feature (Type B), for all Variants of CM4
{{{name2}}}

{{{name3}}}

{{{name4}}}

{{{name5}}}


Overview

The Compute Module 4 PoE 4G Board is an industrial-grade IO baseboard designed for Raspberry Pi Compute Module 4 (not included). It is a baseboard that can be used with Raspberry Pi Compute Module 4, supports PoE power supply and 5V DC power supply, and has four USB2.0 onboard, which is convenient for users to use.

Precautions for use

1: Do not plug and unplug any device except USB and HDMI while the baseboard is working.
2: Please confirm the fan voltage before connecting. It supports 5V and 12V. The default connection is 5V. Please modify the jumper of FAN_VCC if you want to switch the fan voltage
3: Type C interface can be used for the power supply or a USB SLAVE interface for burning images.
4: 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: USB2.0 is closed by default, if you need to open it, you need to add dtoverlay=dwc2,dr_mode=host in the config.txt.
7: When using the PoE function, pay attention to checking whether the switch supports the PoE of the 802.3af network standard.
8: When you need to use POE, connect the POE jumper cap to the EN position.
9: Two DISP interfaces cannot be used together by default.

Dimension

Compute_Module 4 POE Board (B)
Compute-Module-4-PoE-Board-B-details-size.jpg
Compute_Module 4
Compute Module 4 IO Board 5.jpg

What's on board

Compute-Module-4-PoE-Board-B-details-intro.jpg Compute-Module-4-PoE-Board-B-details-intro2.jpg

No. Component Description
1 CM4 socket Suitable for all variants of Compute Module 4
2 40PIN GPIO header ~
3 BOOT selection ON: CM4 would be booted from USB-C interface
OFF: CM4 would be booted from eMMC or Micro SD card
4 Misc functional pins ~
5 USB Type-C power supply/programming 5V/2.5A power supply,
also allows burning system image into Compute Module 4 eMMC variants
6 Status indicators ACT: Raspberry Pi operating status indicator
PWR: Raspberry Pi power indicator
7 DISP 2x MIPI DSI display port
8 CAM 2x MIPI CSI camera connectors.
9 USB2.0 ports 4x USB2.0 ports, for connecting sorts of USB devices
10 HDMI ports 2x HDMI ports, supports dual 4K 30fps output
11 RTC battery holder supports CR1220 button cell
12 FAN header for connecting cooling fan, allows speed adjustment and measurement
13 PCIe Gen 2 × 1 socket forconnecting PCIe Gen 2 × 1 modules
14 Gigabit Ethernet connector Gigabit Ethernet RJ45 with PoE support, 10/100/1000M compatible
15 DC 5V output ~
16 RS485 with 600W lightning-proof, anti-surge, and 15KV ESD protection,
reversed optional 120R balancing resistor jumper
17 RS232 with TVS diode, anti-surge, and ESD protection
18 Buzzer ~
19 FAN_VDD/PoE selection cooling fan driving voltage: 12V or 5V
PoE: enable (EN) or disable (DIS)
20 FE1.1S USB expansion chip
21 PCF52063ATL RTC chip
22 RTC/FAN I2C bus switch,
SDA0/SCL0: I2C-10 is shared with CSI/DSI
GPIO3/2: I2C-1 is shared with 40PIN header
23 IO logic level selection set the CM4 IO logic level as 3.3V or 1.8V
24 RTC interruption configuration PI-RUN: CM4 will reboot on RTC interruption
GN-EN: CM4 powerdown on RTC interruption
D4: D4 pin is triggered on RTC interruption
25 Micro SD card slot Insert a Micro SD card with pre-programmed system, to start up Compute Module 4 Lite

Special function pin description

Compute Module 4 POE Board (B) 4.png

Name Description
1 PI BOOT Don't use it, use the BOOT DIP switch
2 EEPROM WP Low level prevents EEPROM from being rewritten
3 IP1/0 CM4 motherboard MXL7704 AN1/0 pin
4 VADC COMP Composite video output
5 ETH IN ETH sync signal
6 PI_EN is synchronized with PI_RUN signal
7 PI_GLOBAL_EN CM4 onboard MXL7704 power enable pin, low level disable
8 PI_RUN CM4 status indication, high level means it is powered on, forcibly pull down to force restart CM4
9 WIFI_EN WIFI enable, disable at low level, open when suspended
11 BT_EN Bluetooth enable, disable at low level, enable when floating

Note

Do not plug or unplug any device while the base board is powered on.

Writing Image

RTC FAN

  • Note: Please connect the fan before turning on the power of the baseboard and then complete the test. Please do not connect the fan after the baseboard 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 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 0 x 51 (7-bit address)
FAN ( EMC2301 ) on i2c-10, address is 0 x 2f (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 temperature is higher than 45 degrees Celsius, and will up to the highest speed when higher than 50 degrees Celsius.

CSI DSI

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:
sudo apt-get install p7zip-full -y
wget https://files.waveshare.com/upload/7/75/CM4_dt_blob_Source.zip
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
# In the use of any DSI, HDMI1 no image output, even if you do not connect the DSI screen as long as the corresponding file compiled, that HDMI1 no output
# If you need to restore, delete the corresponding dt-blob.bin can be: sudo rm -rf /boot/dt-blob.bin 
#Execution is complete, power off and restart CM4


New Version (Bullseye)

Camera Config

  1. Execute the following commands to edit "/boot/config.txt" file.
    sudo nano /boot/config.txt
  2. Block or remove the automatic camera detection statement:
    CM4-NANO-B002.png
  3. Add the driver of the camera you are using, here I take IMX219 as an example and connect it to CAM0, and attach the adapter.
    CM4-NANO-B003.png
  4. 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
    IMX708 dtoverlay=imx708,cam0 dtoverlay=imx708,cam1
    • If you are using the official Raspberry Pi camera and only one camera is connected, there is no need to set the config file.
    • CM4-NANO - only CAM0 is used, so you only need to add "dtoverlay=imx219,cam0".

    CM4-NANO-B004.png
    5. Ctrl+x to exit the editor.
    6. Reboot the Raspberry Pi.

    sudo reboot
    

Camera Test

  1. Enter the camera detection command, you can see that the camera is detected by now.
    libcamera-hello --list-cameras
    

    CM4-NANO-B005.png

  2. Display the camera screen on the desktop.
  3. libcamera-hello -t
    
  4. Taking photos.
    libcamera-jpeg -o test.jpg
    
  5. Record a video of 10s.
    libcamera-vid -t 10000 -o test.h264
    
  6. Other Commands
    Check whether the camera is detected:
    libcamera-hello --list-cameras

    Open the corresponding cameras:

    libcamera-hello  --camera 1
    libcamera-hello  --camera 0
    

    Take a photo:

    libcamera-jpeg -o test.jpg
    #Add --camera to specify a camera 
    

Old Version (Buster)

Camera Config

    1. Execute the following command to enter the Raspberry Pi configuration.
    sudo raspi-config

    2. Choose Interfacing Options and enter.
    Interface.png
    3. Choose Camera:
    Camera.png
    4. Choose to enable the camera interface.
    Camera2.png
    5. The system prompts as follows:
    Prompt.png
    6. Back to the main interface, select Finish.
    Finish.png
    7. Reboot the system.
    Finish2.png


    Camera Test

    raspistill -o image.jpg
    
    • Test the recording function:
    raspivid -o video.h264 -t 10000
    
      • Where -t 10000 means recording for 10 seconds, users can adjust according to their own needs.
      • Please refer to CSI.





Support

If you require technical support, please go to the Support page and open a ticket.