Katapult Firmware

Katapult Firmware Description

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Katapult was originally named CanBoot, and later renamed to katapult.

• Katapult firmware is a type of bootloader that can be used in conjunction with Klipper. After burning the firmware using methods like DFU, you can use commands to update the firmware with one click.
• Advantage: Quickly double-clicking the reset button or quickly cutting power twice will enter the Katapult firmware, at which point there will be an LED flashing on the mainboard.
• Katapult firmware can only be used to burn firmware and cannot connect to Klipper!!!
• Katapult firmware supports three connection methods for connecting to the host computer, and the firmwares for these three methods are independent of each other.
  • CAN connection
    • Advantage: After compiling the KLIPPER firmware, you can directly update the firmware using a command, and it has strong interference resistance.
    • Disadvantage: You need to know the firmware compilation rate in advance.
  • RS232 connection
    • Advantage: After compiling the KLIPPER firmware, you can update the firmware using a command, and it has very strong interference resistance.
    • Disadvantage: You cannot use a command to update the firmware with one click; you need to manually enter the Katapult firmware.
  • USB connection
    • Advantage: After compiling the KLIPPER firmware, you can directly update the firmware using a command.
    • Disadvantage: A long data cable is prone to interference, which may lead to disconnection.

tip

• D8 uses a USB connection

Entering Flash Mode

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The RST button is on the left and the BOOT button is on the right

• There are two methods to enter flash mode
• First: With the board completely powered off, press and hold the BOOT button, then connect one end of a data-capable TYPE-C cable to the mainboard and the other end to your device
• Second: After connecting one end of a data-capable TYPE-C cable to the mainboard and the other end to your device, press and hold the BOOT button, then press the RST button, release the RST button, and finally release the BOOT button
  

Flashing Firmware

Windows Flashing Guide

• Katapult Firmware for D8
  • Click the download link below
  • Loading...

Notice

To ensure successful STM32 firmware flashing, please pay attention to the following:

• Some computers' USB ports may cause unstable flashing due to driver or signal compatibility issues. We recommend that you try connecting using a different USB port.
• If changing ports doesn't help, an effective solution is to connect via an external USB hub, which often improves compatibility.
• When the flashing software displays the error message below, try using a hub first. If the problem persists, please check or use the host computer to flash
  

1. Flashing tool Download link
2. Download SetupSTM32CubeProgrammer and STM32 DFU driver
3. Download the firmware to any directory on your computer
4. Connect the motherboard to the computer using a Type-C cable, ensuring it has entered dfu flashing mode
5. In STM32CubeProgrammer, select USB mode, then refresh and connect
   
6. If no error pop-up appears, the connection is successful.
   Warning

   If the following message appears, it indicates a computer or software issue. Please use the host computer to flash: Host Computer Flashing Guide

   
7. Click the download icon on the left and select the options below
   
8. Click Browse at the arrow's location, then select the firmware you need to flash
   
9. Select Start address and enter 0x08000000
   • Note: If the firmware is in HEX format, skip this step!!
   
10. Click Start automatic mode below to begin flashing the firmware
    
11. The appearance of the message below indicates that the firmware has been successfully flashed
    

Host Flashing Guide

1. Install the flashing tool

• This step is not required for FLY host software.
• If installation is needed, ensure the host computer is connected to the internet.
• If the flashing tool has already been installed, you may skip this step.

sudo apt update
sudo apt install dfu-util -y

2. Check device connection status

• Run the following command to confirm whether the device is successfully connected:

lsusb

• If the DFU device is not recognized, try re-entering flashing mode.
• In some system versions, the device name might differ; as long as 0483:df11 appears, it indicates the device has successfully entered flashing mode.

3. Obtain the pre-compiled firmware

• Below are pre-compiled firmware files. Please choose the corresponding command based on your system type to download (ensure the host computer can access the internet). If download fails due to network issues, please contact the after-sales group administrator for assistance.

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FlyOS-Armbian or Standard System

cd && git clone https://github.com/FengHua741/FLY_Katapult.git

FlyOS-FAST System

git clone https://github.com/FengHua741/FLY_Katapult.git /data/FLY_Katapult 
ln -s /data/FLY_Katapult /root/FLY_Katapult

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• If you have previously downloaded the firmware package, it is recommended to update to the latest version before proceeding:

cd ~/FLY_Katapult && git pull

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4. Flash Firmware

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Only one of the firmware files needs to be flashed

• Below is the command for flashing the firmware

  sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D ~/FLY_Katapult/BL/D/FLY_D8_F407.bin

5. If you see the content shown in the arrow in the image below File downloaded successfully, the flashing was successful

   

tip

After flashing, you need to fully power off the mainboard once.