Updating Klipper Firmware on a Fly-D5 in CANbus mode

How to update the klipper firmware running on a Fly-D5 in CANbus mode

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Configuring and installing Klipper for CAN bus

Compile Klipper firmware for Fly-D5

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

ssh to your klipper host console
cd to the klipper directory
```
cd ~/klipper
```
Run make clean
```
make clean KCONFIG_CONFIG=config.d5
```

Important: If when running the above command you get this output
Using default symbol values (no 'config.d5'). Configuration saved to 'config.d5'
Then you need to set all the correct settings when running make menuconfig below.
Otherwise, skip to compiling klipper.

Open menuconfig

make menuconfig KCONFIG_CONFIG=config.d5

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
- [*] Enable extra low-level configuration options
- Micro-controller Architecture (STMicroelectronics STM32)
- Processor model (STM32072)
- Bootloader offset (8KiB bootloader)
- Clock Reference (8 MHz crystal)
- Communication interface (CAN bus (on PB8/PB9))
- (1000000) CAN bus speed
- () GPIO pins to set at micro-controller startup
  
  Klipper Menu Config CAN
Quit and save the configuration
Run Make to compile the firmware
```
make KCONFIG_CONFIG=config.d5 -j4
```

Flash Klipper CANbus firmware with Katapult over CANbus

Look in your printer.cfg file and make note of the UUID for your board.

Flash the klipper firmware to the Fly-D5 by running the following command.

python3 ~/katapult/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u {paste your UUID here}

Example

python3 ~/katapult/scripts/flash_can.py -i can0 -f ~/klipper/out/klipper.bin -u 8248a4b16ede

You should get a download progress bar and File downloaded successfuly when the burning is complete.

Burn Klipper firmware over CANbus
Your Fly-D5 should now have klipper firmware updated and be ready to use again.

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