marlin/buildroot/share/PlatformIO/boards/BigTree_GTR_v1.json

{
  "build": {
    "core": "stm32",
    "cpu": "cortex-m4",
    "extra_flags": "-DSTM32F4 -DSTM32F407xx -DSTM32F40_41xxx",
    "f_cpu": "168000000L",
    "hwids": [
      [
        "0x1EAF",
        "0x0003"
      ],
      [
        "0x0483",
        "0x3748"
      ]
    ],
    "mcu": "stm32f407zgt6",
    "variant": "BIGTREE_GTR_V1"
  },
  "debug": {
    "jlink_device": "STM32F407ZG",
    "openocd_target": "stm32f4x",
    "svd_path": "STM32F40x.svd"
  },
  "frameworks": [
    "arduino"
  ],
  "name": "STM32F407ZG (192k RAM. 1024k Flash)",
  "upload": {
    "disable_flushing": false,
    "maximum_ram_size": 196608,
    "maximum_size": 1048576,
    "protocol": "stlink",
    "protocols": [
      "stlink",
      "dfu",
      "jlink"
    ],
    "offset_address": "0x8008000",
    "require_upload_port": true,
    "use_1200bps_touch": false,
    "wait_for_upload_port": false
  },
  "url": "https://www.st.com/en/microcontrollers-microprocessors/stm32f407zg.html",
  "vendor": "Generic"
}