USB Firmware Compilation

Check the DIP Switch

Important

For normal use, please set the DIP switch to the upward position.
When adjusting the DIP switch, please push it all the way up, otherwise it may not connect to the lower computer!!!

SSH Connect to the Upper Computer

Warning

Before compiling the firmware, you need to connect to the upper computer's SSH via wifi.

First, please: Use wifi to connect to the upper computer SSH

USB Firmware Flashing
Manually Compile USB Firmware

USB Firmware Flashing

Tip

The FLYOS-FAST system has a pre-compiled USB firmware, so manual compilation is not required. You can flash it by executing the command below.
Alternatively, you can choose to manually compile the USB firmware.

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

fly-flash -d auto -h -f /usr/lib/firmware/klipper/stm32h723-128k-usb.bin

Below is an introduction on how to compile the firmware:

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

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

Here, rm -rf ~/klipper/.config && rm -rf ~/klipper/out deletes previous compilation data and firmware, and make menuconfig compiles the firmware. After execution, the following interface should appear:

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Select Enable extra low-level configuration options and press the Enter key:

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

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Enter the Processor model menu, select STM32H723, and press Enter:

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Select Bootloader offset and choose: 128KiB bootloader:

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Select Clock Reference (8 MHz crystal) and choose: 25 MHz crystal:

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

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Press the Q key, and when Save configuration appears, press the Y key:
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The configuration should now be saved, and you will exit back to the command line interface.
Enter the following command to start compilation. This may take some time:
```
make -j4
```
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If the following content is output at the end, the compilation is successful.
Due to Klipper version differences, as long as out/klipper.bin appears, it 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 my host IP is 192.168.101.179, just type it and press Enter.

Open the host's WEB interface. In the left sidebar configuration options, find:

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

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

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

Click SERIAL, then refresh.

Refreshing in fluidd

Refreshing in mainsail

Copy the ID. Click where the arrow points to copy.

In fluidd, check if ttyAMC exists, and ensure Path by ID exists. This is the USB ID.

In mainsail, check if ttyAMC exists, and ensure Path by ID exists. This is the USB ID.

Filling in the USB ID

dangerous

Please note, the ID below cannot be used!!!!

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

Close DEVICES and fill in the ID.

Important Notes

In the configuration file, change:

[mcu] 
serial: /tmp/klipper_host_mcu

to:

[mcu host] 
serial: /tmp/klipper_host_mcu

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.

dangerous

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.

Check the DIP Switch​

SSH Connect to the Upper Computer​

USB Firmware Flashing​

Firmware Flashing​

Searching for USB ID​

Filling in the USB ID​