USB Firmware Compilation

SSH Connection to the Host Computer

Warning

Before compiling the firmware, you need to connect to the host computer SSH via WiFi.

First, please: Use WiFi to Connect to Host SSH

USB Firmware Flashing
Manual USB Firmware Compilation

USB Firmware Flashing

Note

A pre-compiled USB firmware is already available in the FLYOS-FAST system, so there's no need to manually compile the firmware. You can flash it by executing the command below.
Alternatively, you can choose Manual USB Firmware Compilation to compile the firmware yourself.

Connect to the host computer via SSH and enter the following command:

fly-flash -d auto -h -f /usr/lib/firmware/klipper/stm32f407-32k-usb.bin

Firmware Compilation Quick Guide

Notes

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

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

Switching Users:

Standard Systems (Raspberry Pi official system, etc.)
Do not use root. Switch to a regular user:
```
su <username>
```
FLY Host Machine (FlyOS-FAST system)
Only supports logging in as the root user (password: mellow).

Firmware Compilation Operation Guide

In the Klipper firmware configuration interface, only keyboard operations are supported; mouse usage is not possible.

Key	Function
↑ / ↓	Move the cursor up/down to select menu items
Enter / Space	Confirm selection, toggle options, or enter submenus
ESC	Return to the previous menu
Q	Exit the configuration interface
Y	When exiting, press Y if prompted to save the configuration

Start Firmware Compilation

The following describes how to compile the firmware:

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

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

The command rm -rf ~/klipper/.config && rm -rf ~/klipper/out deletes previous compilation data and firmware.
make menuconfig is for compiling the firmware. After execution, the following interface should appear:

Loading...
Select Enable extra low-level configuration options and press Enter.

Loading...
Navigate to the Micro-controller Architecture menu, then select STMicroelectronics STM32 and press Enter.

Loading...
Navigate to the Processor model menu, select STM32F407, and press Enter.

Loading...
Select Bootloader offset, and choose: 32KiB bootloader.

Loading...
For Communication interface, select: USB (on PA11/PA12).

Loading...

Press the Q key. When Save configuration appears, press the Y key.
Loading...
The configuration should now be saved, and you will exit to the command line interface.
Enter the following command to start compilation. This process may take some time.

make -j4

The compilation is successful if the following content is output at the end.
Due to Klipper version differences, the appearance of out/klipper.bin indicates success.
```
Linking out/klipper.elf
Creating bin file out/klipper.bin
```

Firmware Flashing

Tip

Execute the following command to flash the firmware.

fly-flash -d auto -h -f /data/klipper/out/klipper.bin

Searching for USB ID

Open your browser, enter the IP address of the host computer in the address bar. For example, if the host IP is 192.168.101.179, type it in and press Enter.

After accessing the host's WEB interface, find the following in the configuration options on the left sidebar:

For fluidd: Click on {…} to enter, then find printer.cfg.

For mainsail: Click on Machine to enter, then find printer.cfg.

Click on printer.cfg to enter, then click on DEVICES in the top right corner.

Click on SERIAL, then refresh.

Refresh in fluidd.

Refresh in mainsail.

Copy the ID. Click on the indicated arrow to copy.

In fluidd, ensure ttyACM exists and that Path by ID is present. This is the USB ID.

In mainsail, ensure ttyACM exists and that Path by ID is present. This is the USB ID.

Filling in the USB ID

Danger

The ID shown below is an example and CANNOT be used !!!!

serial: /dev/serial/by-id/usb-1a86_USB_Serial-if00-port0

Close the DEVICES window and fill in the ID.

Important

In the configuration file, change:

[mcu] 
serial: /tmp/klipper_host_mcu

[mcu host] 
serial: /tmp/klipper_host_mcu

And add:

[mcu]
serial: <Replace this with the ID you just queried>

Find [MCU] in fluidd.

Find [MCU] in mainsail.

Fill the ID into the configuration.

Tip

After filling in the ID, click SAVE & RESTART in the top right corner.

If Klipper prompts ADC out of range, this is normal. Connect the heated bed and thermistor to the mainboard, configure the thermistor pins for the hotend and heated bed, then save and restart.

Danger

Note: All IDs appearing in this document are examples. The actual ID for each mainboard is different. Please fill in the ID you actually obtained.

SSH Connection to the Host Computer​

USB Firmware Flashing​

Firmware Compilation Quick Guide​

Notes​

SSH Login and User Switching​

Switching Users:​

Firmware Compilation Operation Guide​

Start Firmware Compilation​

Firmware Flashing​

Searching for USB ID​

Filling in the USB ID​