设备图标总开关

void switch_callback(const String & state)    //外部总开关回调函数(固定)
{
    if(state == "on")
    {
      digitalWrite(LED_BUILTIN, 0);             //开板载灯
      BUILTIN_SWITCH.print("on");
    }
    else if(state == "off")
    {
      digitalWrite(LED_BUILTIN, 1);             //关板载灯
      BUILTIN_SWITCH.print("off");
    }
}

void setup() {
    // 初始化串口
    Serial.begin(115200);

    // 初始化有LED的IO
    pinMode(LED_BUILTIN, OUTPUT);
    digitalWrite(LED_BUILTIN, HIGH);
    // 初始化blinker
    Blinker.begin(auth, ssid, pswd);//连接热点,接入点灯科技

    BUILTIN_SWITCH.attach(switch_callback);            //绑定函数
}