{
  "kind": "合成输入，非硬件实测",
  "topic": "LED 蛇形连线顺序和画面坐标不同，怎样做一份可逆映射表",
  "data": {
    "columns": 4,
    "rows": 3,
    "cabinet_width": 64,
    "cabinet_height": 32,
    "start": "左上，逐行蛇形"
  }
}