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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 flashing via methods like DFU, the firmware can be updated with a single command.
  • Advantages: Quickly double-click the reset button or power off twice rapidly to enter Katapult firmware, at which point the motherboard's LED will blink.
  • Katapult firmware can only be used to flash firmware and cannot connect to Klipper!!!
  • Katapult firmware supports three methods for connecting to the host computer, with each method's firmware being independent of the others:
    • CAN connection
      • Advantages: After compiling the Klipper firmware, the firmware can be updated directly using commands, with strong anti-interference capabilities.
      • Disadvantages: The firmware compilation rate must be known in advance.
    • RS232 connection
      • Advantages: After compiling the Klipper firmware, the firmware can be updated using commands, with very strong anti-interference capabilities.
      • Disadvantages: Firmware cannot be updated with a single command; manual entry into Katapult firmware is required.
    • USB connection
      • Advantages: After compiling the Klipper firmware, the firmware can be updated directly using commands.
      • Disadvantages: Long data cables are prone to interference, which may cause disconnections.
Tip
  • ERCF supports CAN and USB.
  • CAN firmware provided here is available in 500K and 1M baud rates.

Entering Flash Mode​

Tip

The circled area is the BOOT button.

  • To enter flash mode, ensure the mainboard is completely powered off. Press and hold the BOOT button, then connect a data-capable Type-C cable from the mainboard to the host computer.
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Flashing the Firmware​

  • Katapult firmware for ERCF
  • You can obtain the firmware via the following links:
  • The firmware is located at:
FLY-Firmware/ToolBoard/ERCF
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4. Flash the firmware

:::tip

Only one firmware needs to be flashed.

:::

* Below is the command to flash the 500K CAN baud rate firmware:
    ```bash
    sudo ~/klipper/lib/rp2040_flash/rp2040_flash ~/FLY-Firmware/ToolBoard/ERCF/FLY_ERCF_CANBOOT_CAN_500K.uf2
  • Below is the command to flash the 1M CAN baud rate firmware: 
    sudo ~/klipper/lib/rp2040_flash/rp2040_flash ~/FLY-Firmware/ToolBoard/ERCF/FLY_ERCF_CANBOOT_CAN_1M.uf2
  • Below is the command to flash the USB firmware: 
    sudo ~/klipper/lib/rp2040_flash/rp2040_flash ~/FLY-Firmware/ToolBoard/ERCF/FLY_ERCF_CANBOOT_USB.uf2

  1. If the following prompt appears, the flashing was successful:

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Tip

After flashing is complete, the mainboard must be completely powered off once.

Verifying Firmware Startup​

  • If the firmware starts normally, the LED will begin to blink.
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