USB to CAN Firmware Flashing

Start Compilation

• A host computer with the klipper service installed Connect via SSH over network
• And the device should be properly connected to the host computer
• Note: Please use a standard host computer, such as Raspberry Pi, FLY board, etc. If it is a modified host computer (e.g., WiFi dongle, Redmi devices), we cannot provide technical support due to numerous issues with such hosts

Firmware Compilation Guide for Standard Host

warning

• Applies to standard host computers running systems like Raspberry Pi, FLY board, etc.
• Do not use the ROOT user for any operations on such hosts
• Please perform operations using a regular user account
• To switch users, for the FlyOS-Armbian system, please use the command su fly to switch to the regular user
• For other systems, use the command su <your host username> to switch to the regular user

su <your host username>

FAST System Firmware Compilation Guide

warning

• Notes for the FlyOS-FAST system
  • The default username for the FAST system is root, and the password is mellow
  • Firmware compilation must be performed using the root user
  • The FAST system only has the ROOT user—you do not need to switch users!!!

::: tip

• Please ensure that the host machine can connect to the network normally.
• Before compiling the firmware, use SSH to log in to the host machine via the network.
• Do not use a serial port tool to log in to the host machine.

:::

Klipper Firmware Compilation and Configuration Page Operation Instructions

::: tip

Please make sure that the keyboard input method is in half-width mode, i.e., English mode.

:::

1. The key ↑ (up arrow) and ↓ (down arrow) on the keyboard are used to move the cursor up and down to select menu items.
2. The confirm key Enter or spacebar Space is used to check the menu or enter a sub-menu.
3. The exit key ESC is used to return to the previous menu.
4. The Q key is used to exit the Klipper firmware configuration page.
5. When exiting the Klipper firmware configuration page and there is a prompt, press the Y key to save the configuration file.

::: warning

If there are fewer options in the configuration page, please first check [ ] Enable extra low-level configuration options to display some hidden options.

:::

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 the Q key, Save configuration appears, then press the Y key
  
• The configuration should now be saved and exited back to the command line interface
• Enter the command below to start compilation, which will take some time

make -j4

• The compilation is successful if the final output is as follows

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

Confirm Entry into Flashing Mode

• Connect the main board to the host computer using a Type-C cable, then double-press the reset button, at this point the LED on the main board will start flashing.

Warning

• If the LED does not flash, re-flash the katapult firmware: Flash Katapult Firmware
• If the LED does not flash, after flashing the katapult firmware, proceed with the next step

Search for Devices

• Now that you have successfully logged into the host computer, you can enter lsusb to search for devices. You may encounter one of the following situations:
  • If entering lsusb prompts that the ls command is not found, you can install the required utility by entering the following command:

    sudo apt-get install usbutils

  • If there is no response after entering lsusb, this is a system issue and cannot be resolved here. You will need to change the system or use a known working system.
  • If information like that shown in the image below appears, please note that this is only a reference. You only need to confirm that 1d50:606f appears:
    
• 1d50:606f is the device you will use in this instance.
• If multiple 1d50:606f devices appear, one must be excluded, as multiple entries may affect subsequent flashing and firmware connection. For example, with FLY MINI PAD, it is recommended to use the onboard UTOC and avoid using other CAN bridges.
• If the device does not appear, please check whether the data cable is properly connected and whether the correct firmware has been flashed.

Note

You can proceed to search for the CAN ID only when 1d50:606f appears.

Flashing Firmware

tip

• Internet connection is required when installing the flashing plugin. Please ensure your host machine is properly connected to the internet.
• If already installed, there is no need to install again.

Start Flashing

Warning

• For non-fly host machines, please execute the code below to install the required dependency packages for firmware flashing! Otherwise, the firmware cannot be flashed!

  Default Repository

  cd && git clone https://github.com/Arksine/katapult.git

  Domestic Repository

  cd && git clone https://gitee.com/MrCakeFuck/katapult.git

  

• Use the command below to search for your device ID. The ID shown in the figure below should appear (Note: The ID shown in the figure is for reference only; each motherboard has a unique ID).

  ls /dev/serial/by-id/*

  

• Use the code below to flash the firmware. Please ensure the firmware has already been compiled, and replace <你的主板ID> with the ID obtained in the previous step.

Fly-Armbian and Standard Host Flashing Method

~/klippy-env/bin/python ~/katapult/scripts/flashtool.py -d /dev/serial/by-id/<你的主板ID>

Fly-FAST Flashing Method

python ~/katapult/scripts/flashtool.py -d /dev/serial/by-id/<你的主板ID>

• Reference image is shown below:

  

• Reference after flashing is completed:

  

Firmware Update

USB Firmware Update

• Use the following command to search for your motherboard ID. The ID shown in the figure below should appear (Note: The ID shown in the figure is for reference only; each motherboard has a unique ID).

  ls /dev/serial/by-id/*

Note

The ID /dev/serial/by-id/usb-katapult_rp2040_E662549553642032-if00 in the figure below is the motherboard ID.

• After compiling the latest firmware, use the command below to update the USB firmware. Please replace <你的主板ID> with the ID obtained in the previous step.

  cd ~/klipper/ && make flash FLASH_DEVICE=<你的主板ID>

  

Bridged CAN Firmware Update

• To update the bridged CAN firmware over USB, after compiling the latest firmware, run the command below to reset into Katapult. (As shown in the figure below, the ID is for reference only; please use the ID from your configuration file.)

Note

• <CANBUS UUID> is the CANBUS UUID of the motherboard specified in your printer.cfg configuration file.

Fly-Armbian and Standard Host Reset to Flash Method

• Replace <你的主板ID> with the ID obtained in the previous step.

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

Fly-FAST Reset to Flash Method

• Replace <你的主板ID> with the ID obtained in the previous step.

  python3 ~/katapult/scripts/flashtool.py -i can0 -r -u <CANBUS UUID>

Note

• The f95cee90e1f9 in the figure below is the CANBUS UUID of the motherboard.

• After resetting into Katapult, use the command below to search for your motherboard ID. The ID shown in the figure below should appear (Note: The ID shown in the figure is for reference only; each motherboard has a unique ID).

  ls /dev/serial/by-id/*

Note

The ID /dev/serial/by-id/usb-Klipper_stm32f072xb_43002C000951324757373520-if00 in the figure below is the motherboard ID.

• Ensure the new firmware has been compiled before executing the flashing. Replace <你的主板ID> with the ID obtained in the previous step.

  cd ~/klipper/ && make flash FLASH_DEVICE=<你的主板ID>

  

Recovery Method for Incorrect Firmware

• Power off the motherboard, then power it on again and double-press the reset button quickly to re-enter flashing mode.
• Alternatively, use Windows/host machine to re-flash the Katapult firmware Flash Katapult Firmware