Skip to main content

RS232 Firmware Compilation

Start Compilation​

Brief Guide to Firmware Compilation​

Notes​

  • Network: Ensure the host (Raspberry Pi, etc.) is connected to the internet.
  • Login Method: Must log in via SSH over the network; serial port access is disabled.
  • Input Method: Keep the keyboard in English half-width mode.

SSH Login and User Switching​

Use tools like MobaXterm, PuTTY, etc., to SSH into the host.

Switch User:​

  • Standard System (Official Raspberry Pi system, etc.)
    Do not use root; switch to a regular user: 
    su <username>
  • FLY Host System (FlyOS-FAST system)
    Only supports login as root user (password: mellow)

Firmware Compilation Operation Guide​

In the Klipper firmware configuration interface, only keyboard operations are supported; the mouse cannot be used.

KeyFunction
↑ / ↓Move cursor up/down to select menu items
Enter / SpaceConfirm selection, check options, or enter submenus
ESCReturn to the previous menu
QExit the configuration interface
YIf prompted when exiting, press Y to save the configuration

Starting Firmware Compilation​

Below is an introduction on how to compile the firmware:

  1. Connect via SSH, enter the following command, and press Enter:

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

    Here, rm -rf ~/klipper/.config && rm -rf ~/klipper/out is used to clear previous compilation configurations and firmware; make menuconfig is used to open the Klipper firmware configuration interface.

  2. Follow the order below to set each item one by one, completing each before moving on to the next.

    1启用 Enable extra low-level configuration options
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    2Micro-controller Architecture 选择 STMicroelectronics STM32
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    3Processor model 选择 STM32H723
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    4Bootloader offset 选择 No bootloader
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    5Clock Reference 选择 25 MHz crystal
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    6Communication interface 选择 Serial (on USART1 PA10/PA9)
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    7Baud rate for serial port 设置为 250000
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    8GPIO pins to set at micro-controller startup 设置为 !PA15
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    9GPIO state at micro-controller startup 选择 Not set

    此项是 FLYOS-Klipper 功能。通常保持 Not set；如需设置全部 GPIO 的启动状态，请先阅读 GPIO 启动状态使用说明。

    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    10按 Q 键退出配置界面
    (Top)
    Klipper Firmware Configuration
    [*] Enable extra low-level configuration options
    Micro-controller Architecture (STMicroelectronics STM32) --->
    Processor model (STM32H723) --->
    Bootloader offset (No bootloader) --->
    Clock Reference (25 MHz crystal) --->
    Communication interface (Serial (on USART1 PA10/PA9)) --->
    (250000) Baud rate for serial port
    (!PA15) GPIO pins to set at micro-controller startup
    GPIO state at micro-controller startup (Not set) --->
    11出现 Save configuration 时按 Y 保存配置
    Quit
    Save configuration?
    (Y)es(N)o(C)ancel

  3. After completing the last two steps above, press Q to exit the configuration interface, then press Y to save the configuration.

  4. Return to the command line and enter the following command, then press Enter to start compiling:

    make -j4
    root@flyos-11e5f8 ~/klipper # make -j4
    Compiling out/src/stm32/gpioperiph.o
    Compiling out/src/stm32/stm32h7_adc.o
    Compiling out/src/stm32/stm32h7_spi.o
    Compiling out/src/stm32/stm32f0_i2c.o
    Compiling out/src/stm32/stm32f0_serial.o
    Compiling out/src/generic/serial_irq.o
    Compiling out/src/stm32/hard_pwm.o
    Preprocessing out/src/generic/armcm_link.ld
    Building out/compile_time_request.o
    Version: XXXX
    Linking out/klipper.elf
    Creating bin file out/klipper.bin

    终端末尾出现 Linking out/klipper.elf 和 Creating bin file out/klipper.bin，即表示编译成功。 实际编译时，部分 Compiling 行和 Version 会随 Klipper 与系统版本变化。

Entering Flash Mode​

Tip

The upper button is the RESET button, and the lower button is the BOOT button.

  • There are two methods to enter DFU mode.
  • First method: With the motherboard completely powered off, hold down the BOOT button, then connect one end of a data cable to the motherboard and the other end to the host computer.
  • Second method: Connect one end of a data cable to the motherboard and the other end to your host computer, hold down the BOOT button, then press the RST button, release the RST button, and finally release the BOOT button.
    Loading...

Flashing the Firmware​

  1. Install the flashing tool

    • No need to install the flashing tool for the FLY host computer
    • If you need to install it, please note: The host computer must have internet access for proper installation
    • If already installed, there is no need to install again
    sudo apt update
    sudo apt install dfu-util -y

  2. Run the following command to check if the connection is successful.

    lsusb

    • If no DFU device is found, please try re-entering flashing mode

    • Due to system version differences, it may display a different name. If you see 0483:df11, it indicates that the flashing mode has been entered

      Loading...

  3. Flash the firmware

    • Run the command below to start flashing. Replace <full path of firmware file> with the actual firmware file path
    sudo dfu-util -a 0 -d 0483:df11 --dfuse-address 0x08000000 -D <full path of firmware file>

  4. If the message File downloaded successfully appears as shown below, the flashing is successful

    Loading...
    Tip

    After flashing is complete, be sure to completely power off the motherboard once.

Confirm Whether the Firmware Has Started​

  • If the firmware starts normally, the LED will light up.
    Loading...
Loading...