Fly-E3v2 Klipper firmware for CAN | Mellow Products Documentation

How to compile and install the klipper firmware running on a Fly-E3-v2 for CAN

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Configuring and installing Klipper for CAN bus

Compile Klipper firmware for Fly-E3-v2

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.e3v2
```

Open menuconfig

make menuconfig KCONFIG_CONFIG=config.e3v2

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 (STM32F407)
- Bootloader offset (32KiB 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.e3v2 -j4
```

Flash Klipper CANbus firmware with Katapult over CANbus

Get the Fly-E3-v2 UUID buy running the following script.
```
~/katapult/scripts/flash_can.py -i can0 -q
```
If CAN devices are detected the above command will return the following.
```
Detected uuid: 8248a4b16ede, Application: Katapult
```
Flash Can Query
Each device will have a unique uuid. In the above example, 8248a4b16ede is the micro-controller’s canbus uuid.
Save the UUID for the next step and for using in your printer.cfg file.

Flash the klipper firmware to the Fly-E3-v2 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-E3-v2 should now have klipper firmware installed and be ready to use.

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