private async void Watcher_Received(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
await this.Dispatcher.InvokeAsync(() => {
// http://sonic.blue/it/605
// Windows10デバイスでiBeaconの全データを取得する方法
iBeacon bcon = new iBeacon(args);
if (bcon.UUID != null)
{
// iBeacon
DateTimeOffset timestamp = args.Timestamp;
string retBeaconData;
retBeaconData = "{";
retBeaconData += string.Format("vendor:'{0}',", bcon.iBeaconVendor);
retBeaconData += string.Format("uuid:'{0}',", bcon.UUID);
retBeaconData += string.Format("major:{0},", bcon.Major.ToString("D"));
retBeaconData += string.Format("minor:{0},", bcon.Minor.ToString("D"));
retBeaconData += string.Format("measuredPower:{0},", bcon.MeasuredPower.ToString("D"));
retBeaconData += string.Format("rssi:{0},", bcon.Rssi.ToString("D"));
retBeaconData += string.Format("accuracy:{0},", bcon.Accuracy.ToString("F6"));
retBeaconData += string.Format("proximity:'{0}',", bcon.Proximity);
retBeaconData += string.Format("BluetoothAddress:'{0}',", bcon.BluetoothAddress);
retBeaconData += string.Format("RawSignalStrengthInDBm:{0}", bcon.RawSignalStrengthInDBm);
retBeaconData += "}";
this.textBox.Text = this.textBox.Text + timestamp.ToString("HH\\:mm\\:ss\\.fff") + ":" + retBeaconData + "\r\n";
}
});
}
//コンストラクタ２
public iBeacon(BluetoothLEAdvertisementReceivedEventArgs eventArgs)
{
BluetoothAddress = eventArgs.BluetoothAddress.ToString("X");
RawSignalStrengthInDBm = eventArgs.RawSignalStrengthInDBm;
//出力されているbyteデータから各値を抽出する
var manufacturerSections = eventArgs.Advertisement.ManufacturerData;
Timestamp = eventArgs.Timestamp;
AdvertisementType = eventArgs.AdvertisementType;
if (manufacturerSections.Count > 0)
{
var manufacturerData = manufacturerSections[0];
var data = new byte[manufacturerData.Data.Length];
iBeacon bcon = new iBeacon();
using (var reader = DataReader.FromBuffer(manufacturerData.Data)) {
reader.ReadBytes(data);
}
//長さをチェック
if (data == null || data.Length < MinimumLengthInBytes + AdjustedLengthInBytes)
{
return;
}
//イベントから取得
Rssi = eventArgs.RawSignalStrengthInDBm;
Name = eventArgs.Advertisement.LocalName;
ManufacturerId = manufacturerData.CompanyId;
//バイトデータから抽出
//公式での出力値（Windowsでは2byteずれているので補正が必要）
// Byte(s) WinByte(s) Name
// --------------------------
// 0-1 none Manufacturer ID (16-bit unsigned integer, big endian)
// 2-3 0-1 Beacon code (two 8-bit unsigned integers, but can be considered as one 16-bit unsigned integer in little endian)
// 4-19 2-17 ID1 (UUID)
// 20-21 18-19 ID2 (16-bit unsigned integer, big endian)
// 22-23 20-21 ID3 (16-bit unsigned integer, big endian)
// 24 22 Measured Power (signed 8-bit integer)
// 25 23 Reserved for use by the manufacturer to implement special features (optional)
//BigEndianの値を取得
{
//UUID = BitConverter.ToString(data, 4 + AdjustedLengthInBytes, 16); // Bytes 2-17
//00000000 - 0000 - 0000 - 0000 - 000000000000
int index = 4 + AdjustedLengthInBytes;
UUID = BitConverter.ToString(data, index, 4).Replace("-", "") + "-";
index = index + 4;
UUID = UUID + BitConverter.ToString(data, index, 2).Replace("-", "") + "-";
index = index + 2;
UUID = UUID + BitConverter.ToString(data, index, 2).Replace("-", "") + "-";
index = index + 2;
UUID = UUID + BitConverter.ToString(data, index, 2).Replace("-", "") + "-";
index = index + 2;
UUID = UUID + BitConverter.ToString(data, index, 6).Replace("-", "");
index = index + 6;
}
MeasuredPower = Convert.ToSByte(BitConverter.ToString(data, 24 + AdjustedLengthInBytes, 1), 16); // Byte 22
//もし追加データがあればここで取得
if (data.Length >= MinimumLengthInBytes + AdjustedLengthInBytes + 1)
{
ManufacturerReserved = data[25 + AdjustedLengthInBytes]; // Byte 23
}
//.NET FramewarkのEndianはCPUに依存するらしい
if (BitConverter.IsLittleEndian)
{
//LittleEndianの値を取得
byte[] revData;
revData = new byte[] { data[20 + AdjustedLengthInBytes], data[21 + AdjustedLengthInBytes] };// Bytes 18-19
Array.Reverse(revData);
Major = BitConverter.ToUInt16(revData, 0);
revData = new byte[] { data[22 + AdjustedLengthInBytes], data[23 + AdjustedLengthInBytes] };// Bytes 20-21
Array.Reverse(revData);
Minor = BitConverter.ToUInt16(revData, 0);
}
else
{
//BigEndianの値を取得
Major = BitConverter.ToUInt16(data, 20 + AdjustedLengthInBytes); // Bytes 18-19
Minor = BitConverter.ToUInt16(data, 22 + AdjustedLengthInBytes); // Bytes 20-21
}
}
else
{
new iBeacon();
}
}
