sergelhr / cb1

OS System image for CB1

OS image

• The latest system image is here
• The source code is here

V2.3.0 OS Setting

WIFI Settings

• After the OS writes to the SD card, there is a FAT32 partition named BOOT, open system.cfg file with Notpad, Notpad++ or VSCode.
  
  
• Set WIFI_SSID as your actual wifi name and WIFI_PASSWD as your actual wifi password, The space character can be parsed normally without additional escape character.
  For example: WIFI_SSID="CB1 Tester"
  
  

Overlays Settings

• After the OS writes to the SD card, there is a FAT32 partition named BOOT, open BoardEnv.txt file with Notpad, Notpad++ or VSCode.
  
  
• Set as required as shown in the figure below.
  • set fdtfile to sun50i-h616-biqu-emmc for CB1 eMMC version, set fdtfile to sun50i-h616-biqu-sd (default value) for CB1 normal version
  • The default value is console=display, This means that the UART0 of CB1 is used as the debugging port by default. We can use MobaXterm to connect to CB1 by UART0 and debug. If klipper wants to use UART0 to control the motherboard, we need to set it to console=serial, now klippe can use UART0 as /dev/ttyS0.
  • CB1 will automatically identify the HDMI resolution, but if your HDMI screen cannot report the resolution through the EDID normally, we can forcibly specify the resolution of CB1 output by uncomment extraargs=video and set the actual resolution.
    For example:
    BTT-HDMI7 resolution = 1024x600: extraargs=video=HDMI-A-1:1024x600-24@60
    BTT-HDMI5 resolution = 800x480: extraargs=video=HDMI-A-1:800x480-24@60
    
  • Uncomment overlays=tft35_spi to enable TFT35 SPI screen.
  • Uncomment overlays=mcp2515 to enable MCP2515 spi to canbus module (Theoretically, it can be multiplexed with tft35_spi and 'spidev1.2' at the same time, but mcp2515 needs strong real-time, it is better not to enable other SPI1 features when using mcp2515).
  • uncomment overlays=spidev1_2 to release 'spidev1.2' to user space (For example: adxl345), spidev1.0 is used by MCP2515, spidev1.1 is used by tft35_spi.
    
    
• NOTE: TFT35 SPI and MCP2515 multiplex a group of SPI1

  SPI1_CLK=PH6
  SPI1_MISO=PH8
  SPI1_MOSI=PH7
  TFT35_SPI_CS=PC7
  MCP2515_CS=PC11
  MCP2515_IRQ=PC9
  

CB1 eMMC Version

NOTE: The CB1 eMMC version can also use the SD card as the OS image source, and the priority of the SD card is higher than on-board eMMC, so when using the eMMC, remember not to insert the OS SD card

1. Download the utility sunxi-fel to your computer (Mac OS is not supported) and download the CB1 driver For windows download sunxi-fel.exe For linux download sunxi-fel-aarch64 For arm download sunxi-fel-armhf

2. Push the DIP switch (USB OTG) and (RPI BOOT) to ON to enter BOOT mode.
   As shown in the following figure is for PI4B_Adapter.
   For other motherboards, refer to the CM4 eMMC part of the motherboard manual to set the switch.
   For some motherboards (e.g. Manta-E3EZ, Manta-M8P-V1.1, Manta-M5P) with OTG/UART selector switch for Type-C, we also need to set the switch to OTG mode according to motherboard's manual
   
   

3. USB driver for windows (Linux skip this step): refer to the official website of AllWinner

   • Download Zadig to the rescue
   • Enable Options->List All Devices
     
     
   • Select the USB device to install the driver(most likely will be "unknown"). Make sure the device USB ID is "1F3A:EFE8"). Click Install Driver after confirming that the information is correct
     
     

4. Open the Powershell(windows) or console terminal(linux) where you downloaded the sunxi-fel tools and CB1 driver in step 1.

5. Run
   .\sunxi-fel.exe -v ver (windows)
   sudo ./sunxi-fel-armhf -v ver (linux-armhf)
   sudo ./sunxi-fel-aarch64 -v ver (linux-aarch64)
   to check whether the USB of CB1 is connected normally.
   If you get ERROR: Allwinner USB FEL device not found! means that the USB is not recognized. Please recheck whether the driver is installed successfully.
   If you get AWUSBFEX soc=00001823(H616) means that CB1 eMMC is ready.

   Here on the first line is an example of error you will see if the driver did not install correctly. On the second line is an example of what it will look like after zadig has installed the driver correctly.
   
   

6. Run
   .\sunxi-fel.exe uboot .\u-boot-sunxi-cb1-emmc.bin (windows)
   sudo ./sunxi-fel-armhf uboot ./u-boot-sunxi-cb1-emmc.bin (linux-armhf)
   sudo ./sunxi-fel-aarch64 uboot ./u-boot-sunxi-cb1-emmc.bin (linux-aarch64)
   to write u-boot to CB1

7. When the uboot is written, the computer will recognize a USB flash disk, and then you can use balenaEtcher or Raspberry Pi Imager to write the OS image to eMMC. The steps are the same as the SD card version.

8. Refor to Overlays Settings to set fdtfile to sun50i-h616-biqu-emmc

Note

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Purchase link:

• M4P/M8P/CB1: https://www.biqu.equipment/collections/control-board/products/manta-m4p-m8p