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USB Bridge CAN Firmware Flashing

Start Compiling​

  • A host computer with the klipper service installed is required. Connect SSH via network
  • And the device should be well connected to the host computer.
  • Note: Please use a common host computer, such as Raspberry Pi, FLY Pi, etc. If it is a modified host computer (such as WiFi stick, Redmi, etc.), due to too many problems with this type of host computer, technical support cannot be provided for you.
Precautions
  • Please do not use the ROOT user.
  • Command to switch users
su fly
tip
  • 请确保上位机可以正常联网
  • 固件编译前需要使用SSH通过网络登录上位机
  • 请不要使用串口工具登录上位机

Klipper固件编译和配置页面操作说明​

tip

请确保键盘输入法为半角模式，即英文模式

  1. 键盘上键↑，下键↓，用于上下移动光标来选中菜单项
  2. 确认键Enter 或 空格键Space，用于勾选菜单或进入子菜单
  3. 退出键ESC，用于返回上一级菜单
  4. Q键，用于退出Klipper固件配置页面
  5. Y键，在退出Klipper固件配置页面时，如果有提示，则点击Y键保存配置文件
warning

如果配置页面选项比较少，请先勾选[ ] Enable extra low-level configuration options，用于显示部分隐藏选项

Here's how to compile the firmware:

  • Connect to SSH and enter the following command, then press Enter:

    cd ~/klipper && rm -rf ~/klipper/.config && rm -rf ~/klipper/out && make menuconfig

  • Here, rm -rf ~/klipper/.config && rm -rf ~/klipper/out deletes previous build data and firmware, while make menuconfig compiles the firmware. After execution, the following interface should appear:

  • Select Enable extra low-level configuration options and press Enter

  • Enter the Micro-controller Architecture menu, then choose STMicroelectronics STM32 and press Enter

Updating images

  • Enter the Processor model menu, select STM32F405 and press Enter

  • Select Bootloader offset, choose: 32KiB bootloader

  • Select Communication interface, choose: USB to CAN bus bridge (USB on PA11/PA12)

  • Select CAN bus interface (CAN bus (on PB8/PB9)) ---> as shown in the image

  • Press Q key, when Save configuration appears, then press Y key

  • Now the configuration should be saved and you should be back at the command line interface

  • Enter make -j4 to start compiling, it will take some time

  • When the following content is output, the compilation was successful

    Linking out/klipper.elf
    Creating hex file out/klipper.bin

Firmware Flashing​

tip

Execute the following command to flash the firmware

sudo fly-flash -d gemini-v3 -h -f ~/klipper/out/klipper.bin

Flash the Firmware​

  • Follow the picture below to insert the jumper cap for boot1 then press rst to restart the motherboard
  • Enter the command below to check if the motherboard has entered DFU mode
lsusb
  • After entering and pressing Enter, the following content will be output. The content in the picture indicates that the motherboard has successfully entered DFU mode.
  1. Flash the Firmware
  • Here are the DFU flashing commands 
    cd ~/klipper
    make flash FLASH_DEVICE=0483:df11
  1. If the content at the arrow in the following picture appears, File downloaded successfully, then the flashing was successful
warning

Please ignore the error after the line indicated by the red arrow!!!

tip

After flashing is complete, remove the motherboard jumper cap and press the rst button on the motherboard to restart it.