Katapult Configuration for the Fly-SB2040-V1 on CANbus

How to Configure Katapult for CANbus Operation on the Fly-SB2040-V1

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Important: This guide assumes you have a working Klipper host installation on a Raspberry Pi or compatible device

Overview

Katapult allows you to update your toolboard via CANbus, so no rebooting and rewiring is necessary. We recommend using Katapult for this additional convenience.

Install Katapult package

Note: The bootloader software formerly known as CANBoot has been renamed to Katapult

Tip: To read more about the KCONFIG_CONFIG option, see here

ssh into your klipper host console

Clone the Katapult firmware to your Klipper Host

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

From your Fluidd or Mainsail web UI Edit Moonraker.conf and add the following at the bottom to allow Moonraker to manage updates to Katapult.
```
[update_manager Katapult]
type: git_repo
path: ~/katapult
origin: https://github.com/Arksine/katapult.git
is_system_service: False
```

Compile Katapult firmware

cd to the Katapult directory
```
cd ~/katapult
```

Run make clean

make clean KCONFIG_CONFIG=config.sb2040v1

Open menuconfig

make menuconfig KCONFIG_CONFIG=config.sb2040v1

Important: As of FlyOS v3.1, the default CAN speed is 1000000. These instructions have been updated to reflect that speed as default.
Your host system may be set up for a different default CAN speed. Use nano /etc/network/interfaces.d/can0 to check the speed

Set the following settings
- Micro-controller Architecture (Raspberry Pi RP2040)
- Flash Chip (W25Q080 with CLKDIV 2)
- Build Katapult deployment application (Do not build)
- Communication interface (CAN bus)
- (4) CAN RX gpio number
- (5) CAN TX gpio number
- (1000000) CAN bus speed
- () GPIO pins to set on bootloader entry
- [*] Support bootloader entry on rapid double clip of reset button
- [ ] Enable bootloader entry on button (or gpio) state
- [*] Enable Status LED
- (gpio24) Status LED GPIO Pin
  
  Katapult Menu Config CAN
Quit and save the configuration
Run the make command to compile the firmware
```
make KCONFIG_CONFIG=config.sb2040v1 -j4
```
You should now have a katapult.uf2 file at ~/katapult/out/

Burn Katapult firmware to the Fly-SB2040-V1

Use a USB-C data cable to connect the Fly-SB2040-V1 board to the klipper host.
Press the boot button while inserting the USB cable to put the Fly-SB2040-V1 into boot mode.

Fly-SB2040-V1 Boot Button Location
Run lsusb to see if the connection is successful.
```
lsusb
```
lsusb Results

Flash the Fly-SB2040-V1

sudo make KCONFIG_CONFIG=config.sb2040v1 flash FLASH_DEVICE=2e8a:0003

This will flash the Katapult bootloader image and restart the Fly-SB2040-V1.
When the status LED starts blinking, Reboot and continue to the Klipper for USB configuration section

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