USB Firmware Compilation

Start Compilation

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

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

Standard Systems (Official Raspberry Pi OS, 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).

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

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

Below is how to compile the firmware:

After connecting to 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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Enter 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 to the command line interface.
Enter the following command to start compilation. It will take some time:

make -j4

If the following content is output, 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
```

Before starting to flash the firmware, please first Connect via SSH using network
Off-brand memory cards may cause flashing to fail. Please try to use the recommended memory cards below for firmware updates.
Prepare a TF card with a capacity not exceeding 32G. It is recommended that the TF card's transfer speed must be class10 or higher. It is advised to use TF cards from brands like SanDisk.

Use the TF card prepared earlier.
Format it using SDFormatter.

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Use the left file directory in MobaXterm_Personal to find klipper, then locate and open out.
- Regular System Firmware Download Directory
- FlyOS-FAST System Firmware Download Directory
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Notes for Regular Systems

This category applies to regular host systems like Raspberry Pi, FLY Pi, etc.

The compiled firmware is located in the /home/<Your Host Username>/klipper/out/ directory.

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Notes for FlyOS-FAST System

Firmware directory for FAST System.

The compiled firmware is located in the /data/klipper/out/ directory.

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Download klipper.bin to the TF card and rename it to firmware.bin.
```
firmware.bin
```
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Power off the mainboard and insert the TF card.
Wait for 10 seconds with the mainboard powered on.
Remove the TF card and insert it into the computer. If the firmware.bin file disappears from the SD card and FLY.CUR appears, the flashing was successful.

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