marlin/buildroot/share/PlatformIO/boards/fysetc_f6.json

{
  "build": {
    "core": "arduino",
    "extra_flags": "-DARDUINO_AVR_MEGA2560",
    "f_cpu": "16000000L",
    "hwids": [
      [
        "0x27b2",
        "0x0002"
      ]
    ],
    "mcu": "atmega2560",
    "variant": "fysetcf6"
  },
  "debug": {
    "simavr_target": "atmega2560",
    "avr-stub": {
      "speed": 115200
    }
  },
  "frameworks": [
    "arduino"
  ],
  "name": "FYSETC F6",
  "upload": {
    "maximum_ram_size": 8192,
    "maximum_size": 258048,
    "protocol": "wiring",
    "require_upload_port": true,
    "speed": 115200
  },
  "url": "https://www.fysetc.com/",
  "vendor": "FYSETC"
}