public DeviceReading ConnectToDevice(FoundBluetoothDevice device)
{
device.Client.SetPin(device.Configuration.Pin); // Set the pin access for the device to auto connect
device.Client.Connect(device.Device.DeviceAddress,
InTheHand.Net.Bluetooth.BluetoothService.SerialPort);
return(Connect(device));
}
/// <summary>
/// Starts the listening from Senders.
/// </summary>
/// <param name="reportAction">
/// The report Action.
/// </param>
/// <param name="device"></param>
public DeviceReading ReadData(FoundBluetoothDevice device)
{
try
{
return(device.Client.Connected ? Connect(device) : ConnectToDevice(device));
}
catch (SocketException ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine("A reading from the device has tried to be read and failed, remove the device");
throw;
}
catch (ObjectDisposedException ex)
{
Debug.WriteLine(ex.Message);
throw;
}
catch (IOException ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine("Unable to get network stream");
throw;
}
catch (IndexOutOfRangeException ex)
{
Debug.WriteLine("The index extracting the data was out of range");
throw;
}
catch (SleepException ex)
{
throw;
}
catch (Exception ex)
{
Debug.WriteLine("Unexpected exception has occurred whilst reading the bluetooth data");
Debug.Write(ex.Message);
throw;
}
}
private DeviceReading Connect(FoundBluetoothDevice device)
{
// client is connected
NetworkStream stream = device.Client.GetStream();
if (stream.CanRead)
{
do
{
stream.ReadTimeout = 2500; // 500 millisecond timeout, if unable to get data feed
int numberOfBytesRead = stream.Read(_myReadBuffer, 0, _myReadBuffer.Length);
if (numberOfBytesRead <= 1)
{
continue;
}
string sensorTempValue = Encoding.ASCII.GetString(_myReadBuffer, 0, numberOfBytesRead);
if (string.IsNullOrWhiteSpace(sensorTempValue))
{
return(null);
}
string[] arr = sensorTempValue.Split(Environment.NewLine).ToArray();
if (arr.Length == 0)
{
return(null); // nothing to get
}
DeviceReading deviceReading = new DeviceReading();
string latestReading = arr.LastOrDefault(x => !string.IsNullOrWhiteSpace(x));
if (string.IsNullOrWhiteSpace(latestReading))
{
return(null);
}
string[] latestData = latestReading.Split(' ')
.Where(x => !string.IsNullOrWhiteSpace(x))
.ToArray();
if (latestData.Length == 1) // only one value in the array suspect stoppage
{
if (latestData[0].Equals("-sleep", StringComparison.CurrentCultureIgnoreCase))
{
throw new SleepException("The device is now sleeping");
}
}
int sdCardIndex = Array.IndexOf(latestData, "-sdCardData");
if (sdCardIndex > -1) // has sd card data
{
// loop through elements after sd card data element
SdCardDeviceReading sdCardData = ExtractBluetoothData(latestData, sdCardIndex + 1);
deviceReading.SdCardDeviceReading = sdCardData;
}
LiveDeviceReading liveDeviceReading = ExtractBluetoothData(latestData);
deviceReading.LiveDeviceReading = liveDeviceReading;
return(deviceReading);
}while (stream.DataAvailable); // only continue if there is more to stream and the parse was successful.
return(null);
}
return(null);
}
