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USB Bridge CAN Firmware Flashing

Getting Started with Compilation​

  • You need an upper computer with the klipper service installed Connect via SSH over the network
  • And make sure the device is connected to the upper computer
  • Note: Please use a regular upper computer, such as a Raspberry Pi FLY board, etc. If you are using a modified upper computer, we cannot provide much assistance due to too many issues.
Note
  • Do not use the ROOT user
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

Below is an introduction on how to compile the firmware:

  • After connecting to SSH, enter the command below and press Enter:

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

  • Where rm -rf ~/klipper/.config && rm -rf ~/klipper/out is to delete previous compilation data and firmware, make menuconfig is to compile the firmware. After execution, the following interface should appear

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

  • Go into the menu Micro-controller Architecture then select STMicroelectronics STM32 and press Enter

  • Go into the menu Processor model, select STM32F072 and press Enter

  • Select Bootloader offset, choose: 8KiB bootloader

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

  • Press the Q key, and when Save configuration appears, press the Y key again.

  • Now the configuration should be saved and you should have exited to the command line interface.

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

  • If the compilation is successful, you will see the following output at the end:

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

Confirming Burn Mode Entry​

  • Please ensure that the host machine can connect to the internet normally.
  • Please ensure that the data cable connecting the host and the device has data transmission capabilities.
  • After SSH connecting to the host machine, input lsusb and press enter. You may encounter one of the following three scenarios:
    • It shows that USB devices have been recognized.
    • It prompts that there is no ls command, which can be resolved by executing this command to install it: 
      sudo apt-get install usbutils
    • No error message, but also no other information (this indicates a system problem and requires replacing the system).
  • If there is no reaction after inputting lsusb, this indicates a system problem beyond our control. You need to replace the system with a confirmed working one.
  • If the information circled in the image below appears, you can proceed to the next step.
  • 1d50:6177 belongs to the device you will be using. Ignore the subsequent prompts as system issues might cause them to display incompletely or not at all.
  • If not, check if the data cable is properly connected or if the motherboard is in Katapult mode (formerly known as CANBOOT).
  • If you have already used Katapult to burn the klipper firmware, refer to the method for updating the firmware below.
Note

Proceed to the next step only if 1d50:6177 is present.

Flashing the Firmware​

tip

Use the Katapult firmware to conveniently update the firmware via SSH in the future, without needing to enter DFU mode for firmware burning.

Installation of Flashing Plugin​

tip

Please note that installing the flashing plugin requires an internet-connected host machine. If it has already been installed, there is no need to install it again.

  • Install pip install pyserial

    pip install pyserial

  • If prompted with -bash: pip: command not found, execute the following:

    sudo apt-get install pip

  • If you encounter the error shown below, execute the following:

    pip install pyserial --break-system-packages

Start Flashing Firmware​

  • Use the following command to search for your device's serial port address:

    ls /dev/serial/by-id/*

  • Below is a reference:

  • To flash the firmware, use the following command. Ensure that the firmware has been compiled and note that there should be no space after =.

  • Please ensure you are in the klipper directory to flash the firmware.

    make flash FLASH_DEVICE=

  • Below is a reference:

  • After flashing, refer to the following:

Method to Update Firmware​

  • To update the USB firmware, input the following command after compiling the latest firmware. Note that there should be no space after =.

    make flash FLASH_DEVICE=

  • To update the USB bridge CAN firmware, input the following command after compiling the latest firmware to reset into Katapult.

  • Please note that this command can only be executed on the klipper firmware for the USB bridge CAN; executing it on other firmwares will result in errors.

    ~/klippy-env/bin/python3 ~/katapult/scripts/flashtool.py -i can0 -r -u <MCU ID>

  • After resetting into Katapult, execute the following command to update the firmware:

    make flash FLASH_DEVICE=<your device serial port address>

Solution for Incorrect Firmware Flashing​

  • Power off the motherboard, then power it back on and quickly click the reset button twice.
  • Alternatively, use WINDOWS to clean the firmware and then reflash BL