qmk_firmware/keyboards/handwired/onekey/stm32f0_disco/keyboard.json

{
    "keyboard_name": "Onekey STM32F072 Discovery",
    "processor": "STM32F072",
    "bootloader": "stm32-dfu",
    "matrix_pins": {
        "cols": ["B4"],
        "rows": ["B5"]
    },
    "backlight": {
        "pin": "C8"
    },
    "ws2812": {
        "pin": "B15"
    },
    "apa102": {
        "data_pin": "B15",
        "clock_pin": "B13"
    }
}