USB to CAN Firmware Flashing

Start Compiling

• A host computer with the klipper service installed Connect via SSH over network
• And the device should be properly connected to the host computer
• Note: Please use a standard host computer, such as Raspberry Pi, FLY board, etc. If it is a modified host computer (e.g., WiFi dongle, Redmi devices), we cannot provide technical support due to numerous issues with such hosts

Firmware Compilation Guide for Standard Host

warning

• Applies to standard host computers running systems like Raspberry Pi, FLY board, etc.
• Do not use the ROOT user for any operations on such hosts
• Please perform operations using a regular user account
• To switch users, for the FlyOS-Armbian system, please use the command su fly to switch to the regular user
• For other systems, use the command su <your host username> to switch to the regular user

su <your host username>

FAST System Firmware Compilation Guide

warning

• Notes for the FlyOS-FAST system
  • The default username for the FAST system is root, and the password is mellow
  • Firmware compilation must be performed using the root user
  • The FAST system only has the ROOT user—you do not need to switch users!!!

::: tip

• Please ensure that the host machine can connect to the network normally.
• Before compiling the firmware, use SSH to log in to the host machine via the network.
• Do not use a serial port tool to log in to the host machine.

:::

Klipper Firmware Compilation and Configuration Page Operation Instructions

::: tip

Please make sure that the keyboard input method is in half-width mode, i.e., English mode.

:::

1. The key ↑ (up arrow) and ↓ (down arrow) on the keyboard are used to move the cursor up and down to select menu items.
2. The confirm key Enter or spacebar Space is used to check the menu or enter a sub-menu.
3. The exit key ESC is used to return to the previous menu.
4. The Q key is used to exit the Klipper firmware configuration page.
5. When exiting the Klipper firmware configuration page and there is a prompt, press the Y key to save the configuration file.

::: warning

If there are fewer options in the configuration page, please first check [ ] Enable extra low-level configuration options to display some hidden options.

:::

Below is the introduction on how to compile the firmware:

• After connecting to SSH, enter the following command and press Enter:

  cd ~/klipper && rm -rf ~/klipper/.config && rm -rf ~/klipper/out && make menuconfig

• Among them, rm -rf ~/klipper/.config && rm -rf ~/klipper/out is to delete previous compilation data and firmware. make menuconfig is for compiling the firmware. After execution, the following interface should appear:

  

• Select Enable extra low-level configuration options and press Enter

  

• Enter the menu Micro-controller Architecture then select STMicroelectronics STM32 and press Enter

  

• Enter the menu Processor model, select STM32F407 and press Enter

  

• Select Bootloader offset, select: 32KiB bootloader

  

• Select Communication interface, select: USB to CAN bus bridge (USB on PA11/PA12)

  

• Press the Q key, and Save configuration appears, then press Y key
  
• Press the Q key, and Save configuration appears, then press Y key
  
• Now the configuration should be saved and you should return to the command line interface
• Enter the following command to start compiling, it will take some time

make -j4

• When the output below appears, the compilation is successful

  Linking out/klipper.elf
  Creating hex file out/klipper.bin

Firmware Flashing

tip

Execute the following command to flash the firmware

sudo fly-flash -d c8 -h -f ~/klipper/out/klipper.bin