// 进行连接蓝牙
  let count = 8
  let ress = null
  while (count > 0) {
    count -= 1
    let err, res
    [err, res] = await to(wepy.createBLEConnection({
      discoverServiceType: 1,
      deviceId: deviceID,
      timeout: 3 * 1000
    }))
 
    ress = res
    if ((res && res.errCode === 0) || (err && err.errCode === -1)) {
      this.connet = 0
      return true
    }
    await this.closeBLEConnection()
    if (!this.ble.opened) {
      tip.alert('蓝牙未开启！')
      this.connet = 0
      return
    }
    // 间隔2秒后 再次获取
    await Time.sleep(2)
    tip.loading('蓝牙连接中...')
    this.connet = 0
  }
  if (ress && ress.errMsg.indexOf('createBLEConnection:ok') >= 0) {
    this.connet = 0
    return true
  }
  tip.loaded()
  return false
}