USB Bridge CAN Firmware Burning

SSH Connection to Host Machine

Warning

• Before compiling the firmware, you need to use WiFi connection to connect to the host machine via SSH

• First, please: Use WiFi to Connect to Host Machine SSH

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USB Bridge CAN Firmware Burning

USB Bridge CAN Firmware Burning

Tip

• A precompiled USB bridge CAN firmware is available in the FLYOS-FAST system, no need to manually compile the firmware, just execute the following command to burn it
• You can also choose to Manually Compile USB Bridge CAN Firmware and compile the firmware yourself

• Carefully select based on your device, FLY system defaults to 1M

• The C5 system defaults to 1M rate, if you need 500K, you need to modify the canbus_bitrate rate in the system settings

• This command burns the 1M USB bridge CAN firmware

fly-flash -d c5 -h -f /usr/lib/firmware/klipper-h723-128k-usbcan-1m.bin

• This command burns the 500k USB bridge CAN firmware

fly-flash -d c5 -h -f /usr/lib/firmware/klipper-h723-128k-usbcan-500k.bin

Manually Compile USB Bridge CAN Firmware

Manually Compile USB Bridge CAN Firmware

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

Below is the introduction on how to compile the firmware:

• After connecting to SSH, enter the following command 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

  

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

  

• Enter the menu Processor model, select STM32H723 and press Enter

  

• Select Bootloader offset, select: 128KiB bootloader

  

• Select Clock Reference (8 MHz crystal), select: 25 MHz crystal

  

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

  

• Press Q key, a Save configuration message appears, then press Y key

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

• Enter the following command to start compiling, it takes some time

make -j4

• Finally, output the following content to indicate successful compilation

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Firmware Burning

tip

Execute the following command to burn the firmware

sudo fly-flash -d c5 -h -f ~/klipper/out/klipper.bin

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Search for CAN ID

1. Open the browser and enter the IP address of the host computer in the address bar. For example, if my host computer's IP is 192.168.101.179, just type it in and press Enter.

   

2. Open the WEB interface of the host computer, find in the configuration options on the left sidebar:

   For fluidd: {…}, click to enter and you can find printer.cfg

   For mainsail: Machine, click to enter and you can find printer.cfg

   3. Click printer.cfg, then click DEVICES on the top right
   4. Click CAN, then refresh

   Refresh for fluidd

   Refresh for mainsail

   5. Copy the ID, click the arrow to copy

   For fluidd, confirm whether the first arrow points to Klipper, if yes, click the right arrow to copy

   For mainsail, confirm whether the first arrow points to Klipper, if yes, click the right arrow to copy

Fill in CAN ID

1. Close DEVICES and fill in the ID

Note

• Please modify the following content in the configuration file:

[mcu] 
serial: /tmp/klipper_host_mcu

to

[mcu host] 
serial: /tmp/klipper_host_mcu

• Add:

[mcu]
canbus_uuid: <Replace with the ID you just queried>

Find [MCU] in fluidd

Find [MCU] in mainsail

2. Fill in the ID in the configuration

tip

• After filling in the ID, click SAVE & RESTART on the top right

3. If Klipper prompts ADC out of range, this is a normal phenomenon. Connect the heated bed and thermistor to the motherboard and configure the thermistor pins of the nozzle and heated bed, then save and restart.

dangerous

Note: All IDs mentioned in the document are examples. Each motherboard has a different ID. Please fill in the actual obtained ID.

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