Katapult Firmware

Katapult Firmware Description

tip

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

• SHT36/42 supports CAN
• Only CAN firmware at 500K and 1M rates is provided here

Enter Boot Mode

tip

The circled part is the BOOT button

• With the motherboard completely powered off, short-circuit the BOOT button and then connect one end of the data cable with data transmission to the motherboard and the other end to your device
  
  

Flash Firmware

STM32F072 Windows Flashing Tutorial

• SHT36 Katapult firmware Click to download firmware automatically

Notice

• System compatibility issues, please use the computer's USB2.0 for burning
• If it still cannot be burned, please use the host machine for burning

1. Burning tool Download link
2. Need to download SetupSTM32CubeProgrammer and STM32 DFU driver
3. Copy the firmware (klipper.bin) compiled in front or the precompiled Katapult firmware to any directory on the computer
4. Use a Type-C data cable to connect the motherboard to the computer, make sure it is already:Enter DFU burning mode
5. In STM32CubeProgrammer, select USB mode, refresh, and connect
   
6. If no error pop-up appears, then the connection is successful.
   Warning

   If the content shown below appears, it indicates a problem with the computer or software, please use the host machine for burning:Host machine burning tutorial

   
7. Click the download icon on the left and select several options below
   
8. Click the Browse button indicated by the arrow, then select the firmware you need to burn
   
9. Select Start address and enter 0x08000000
   
10. Click Start automatic mode below to start burning the firmware
    
11. The prompt below indicates that the firmware burning is complete
    

STM32F072 Host Computer Flashing Tutorial

1. Install the burning tool

• No need to install the burning tool for the FLY upper computer
• If you need to install, please note: The upper computer needs to be connected to the internet to install normally
• If already installed, no need to install

sudo apt update
sudo apt install dfu-util -y

2. Execute the following command to check if the connection is successful.

lsusb

• If there is no DFU device, please try to re-enter burning mode
• Due to system version issues, other names may be displayed. If 0483:df11 is shown, it indicates that the burning mode has been entered

3. Pull the pre-compiled firmware

• These are all pre-compiled firmwares
• Please note: The upper computer needs to be connected to the internet to install
• The upper computer needs to execute the command below to download the firmware package (if unable to get the file due to network issues on the upper computer, please contact the administrator in the after-sales group)

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

• If the firmware package has already been downloaded, it is recommended to update the firmware package before proceeding with the remaining operations

cd ~/FLY_Katapult && git pull

4. Flash Firmware

tip

Only one of the firmwares needs to be flashed

• Below is the firmware flashing command for 500K CAN rate

  sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D ~/FLY_Katapult/developer/SHT36/FLY_SHT36_072_500K.BIN

• Below is the firmware flashing command for 1M CAN rate

  sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D ~/FLY_Katapult/developer/SHT36/FLY_SHT36_072_1M.BIN

5. If the content shown by the arrow in the figure below File downloaded successfully appears, the flashing is successful

   

tip

After flashing, the motherboard needs to be completely powered off once.