HarmonyOS 智能设备蓝牙组网

具体参考：https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/spp-development-guide-V5#%E9%80%9A%E8%BF%87socket%E8%BF%9E%E6%8E%A5%E5%AF%B9%E7%AB%AF%E8%AE%BE%E5%A4%87

示例参考如下：

import { socket } from '@kit.ConnectivityKit';
import { AsyncCallback, BusinessError } from '@kit.BasicServicesKit';
// 开启ble扫描，获取对端设备mac地址
let deviceId = 'xx:xx:xx:xx:xx:xx';
// 连接对端设备
socket.sppConnect(deviceId, {
  uuid: 'xxx',
  secure: true,
  type: 0
}, (code, socketID) => {
  if (code != null) {
    console.error('sppConnect error, code = ' + (code as BusinessError).code);
    return;
  }
  console.info('sppConnect success, socketId = ' + socketID);
})