RS232 Firmware Compilation

Start Compilation

You need an upper computer with the klipper service installed Connect via SSH over the network
And make sure the device is connected to the upper computer
Note: Please use a regular upper computer, such as a Raspberry Pi FLY board, etc. If you are using a modified upper computer, we cannot provide much assistance due to too many issues.

Note

tip

tip

请确保键盘输入法为半角模式，即英文模式

warning

如果配置页面选项比较少，请先勾选[ ] Enable extra low-level configuration options，用于显示部分隐藏选项

Below is an introduction on how to compile the firmware:

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

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

Where rm -rf ~/klipper/.config && rm -rf ~/klipper/out is to delete previous compilation data and firmware, and make menuconfig is to compile 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 and then select Raspberry Pi RP2040 and press Enter
Select Bootloader offset, choose: NO bootloader
Select Communication interface, choose: UART0 on GPIO0/GPIO1

Select GPIO pins to set at micro-controller startup, input: !gpio5 Please note ! is uppercase
Press Q key, a Save configuration prompt appears, then press Y key

Now the configuration should be saved and you should be back at the command line interface
Input make -j4 to start compilation, it may take some time

The following output indicates successful compilation

Linking out/klipper.elf
Creating uf2 file out/klipper.uf2

tip

Left is the RESET button, right is the BOOT button

There are two methods to enter DFU mode
Method one: With the mainboard completely powered off, hold the BOOT button and connect the data transfer cable to the mainboard and the host computer
Method two: Connect the data transfer cable to the mainboard and the host computer, hold the BOOT button and press the RST button, then release the RST button and finally release the BOOT button

Please ensure the host machine can connect to the internet normally.
Please ensure the data cable connecting the lower-level machine to the host machine has data transfer capabilities.
After SSH connecting to the host machine, input lsusb and press enter. One of the following three situations may occur:
- It displays USB devices that have been recognized.
- It prompts that there is no ls command, you can execute this command to install it:
```
sudo apt-get install usbutils
```
- There are no errors, but no other information (this indicates a system problem and needs a system replacement).
If there is no reaction after entering lsusb, this indicates a system problem and we cannot help here; you need to replace with a confirmed normal system.
If the information circled in the following image appears, you can proceed to the next step.
2e8a:0003 belongs to the device you will use this time. Ignore the subsequent prompts as system issues might cause them to display incompletely or not at all.
If not, please check if the data cable is properly connected or if the motherboard is in Katapult mode (formerly CANBOOT).

Note

Proceed to the next step only when you have 2e8a:0003.

Short-circuit or long press BOOT, and after connecting to the host machine via Type-C and entering lsusb, you will see 2e8a:0003
Please note that the current RP2040 is in firmware burning mode and can only burn uf2 suffix firmware. Once the firmware is burned, it will disappear.
After ejecting RPI-RP2, there is no need to short-circuit BOOT or keep pressing the BOOT button.

Use the following command to burn the firmware to RP2040

cd && cd ~/klipper/
make flash FLASH_DEVICE=2e8a:0003