wx.openBluetoothAdapter({
  success: function (res) {
    console.log(res)
  }
})

wx.closeBluetoothAdapter({
  success: function (res) {
    console.log(res)
  }
})

wx.getBluetoothAdapterState({
  success: function (res) {
    console.log(res)
  }
})

wx.onBluetoothAdapterStateChange(function(res) {
  console.log(`adapterState changed, now is`, res)
})

// 以微信硬件平台的蓝牙智能灯为例，主服务的 UUID 是 FEE7。传入这个参数，只搜索主服务 UUID 为 FEE7 的设备
wx.startBluetoothDevicesDiscovery({
  services: ['FEE7'],
  success: function (res) {
    console.log(res)
  }
})

wx.stopBluetoothDevicesDiscovery({
  success: function (res) {
    console.log(res)
  }
})

// ArrayBuffer转16进制字符串示例
function ab2hex(buffer) {
  var hexArr = Array.prototype.map.call(
    new Uint8Array(buffer),
    function(bit) {
      return ('00' + bit.toString(16)).slice(-2)
    }
  )
  return hexArr.join('');
}
wx.getBluetoothDevices({
  success: function (res) {
    console.log(res)
    if (res.devices[0]) {
      console.log(ab2hex(res.devices[0].advertisData))
    }
  }
})

// ArrayBuffer转16进度字符串示例
function ab2hex(buffer) {
  var hexArr = Array.prototype.map.call(
    new Uint8Array(buffer),
    function(bit) {
      return ('00' + bit.toString(16)).slice(-2)
    }
  )
  return hexArr.join('');
}
wx.onBluetoothDeviceFound(function(devices) {
  console.log('new device list has founded')
  console.dir(devices)
  console.log(ab2hex(devices[0].advertisData))
})

wx.getConnectedBluetoothDevices({
  services: ['FEE7'],
  success: function (res) {
    console.log(res)
  }
})

wx.createBLEConnection({
  // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 
  deviceId: deviceId,
  success: function (res) {
    console.log(res)
  }
})

wx.closeBLEConnection({
  deviceId:deviceId
  success: function (res) {
    console.log(res)
  }
})

wx.onBLEConnectionStateChange(function(res) {
  // 该方法回调中可以用于处理连接意外断开等异常情况
  console.log(`device ${res.deviceId} state has changed, connected: ${res.connected}`)
})

wx.getBLEDeviceServices({
  // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接 
  deviceId: deviceId,
  success: function (res) {
    console.log('device services:', res.services)
  }
})

wx.getBLEDeviceCharacteristics({
  // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接
  deviceId,
  // 这里的 serviceId 需要在 getBLEDeviceServices 接口中获取
  serviceId,
  success (res) {
	console.log('device getBLEDeviceCharacteristics:', res.characteristics)
  }
})

// 必须在这里的回调才能获取
wx.onBLECharacteristicValueChange(function(characteristic) {
  console.log('characteristic value comed:', characteristic)
})

wx.readBLECharacteristicValue({
  // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接  [**new**]
  deviceId: deviceId,
  // 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取
  serviceId: serviceId,
  // 这里的 characteristicId 需要在上面的 getBLEDeviceCharacteristics 接口中获取
  characteristicId: characteristicId,
  success: function (res) {
    console.log('readBLECharacteristicValue:', res.errCode)
  }
})

// 向蓝牙设备发送一个0x00的16进制数据
let buffer = new ArrayBuffer(1)
let dataView = new DataView(buffer)
dataView.setUint8(0, 0)

wx.writeBLECharacteristicValue({
  // 这里的 deviceId 需要在上面的 getBluetoothDevices 或 onBluetoothDeviceFound 接口中获取
  deviceId: deviceId,
  // 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取
  serviceId: serviceId,
  // 这里的 characteristicId 需要在上面的 getBLEDeviceCharacteristics 接口中获取
  characteristicId: characteristicId,
  // 这里的value是ArrayBuffer类型
  value: buffer,
  success: function (res) {
    console.log('writeBLECharacteristicValue success', res.errMsg)
  }
})

wx.notifyBLECharacteristicValueChange({
  state: true, // 启用 notify 功能
  // 这里的 deviceId 需要已经通过 createBLEConnection 与对应设备建立链接  
  deviceId: deviceId,
  // 这里的 serviceId 需要在上面的 getBLEDeviceServices 接口中获取
  serviceId: serviceId,
  // 这里的 characteristicId 需要在上面的 getBLEDeviceCharacteristics 接口中获取
  characteristicId: characteristicId,
  success: function (res) {
    console.log('notifyBLECharacteristicValueChange success', res.errMsg)
  }
})

// ArrayBuffer转16进度字符串示例
function ab2hex(buffer) {
  var hexArr = Array.prototype.map.call(
    new Uint8Array(buffer),
    function(bit) {
      return ('00' + bit.toString(16)).slice(-2)
    }
  )
  return hexArr.join('');
}
wx.onBLECharacteristicValueChange(function(res) {
  console.log(`characteristic ${res.characteristicId} has changed, now is ${res.value}`)
  console.log(ab2hex(res.value))
})