/// <summary>
/// Advanced feature.
/// Send data to a bluetooth device.
/// The device must be Initialised and Connected.
/// The encoding should also be set.
/// </summary>
/// <param name="data">A string of characters to send.</param>
/// <returns>A result status message "True" or "False".</returns>
public static Primitive SendData(Primitive data)
{
BluetoothDeviceInfo info = GetBluetoothDeviceInfo(device);
BluetoothServiceItem item = GetBluetoothServiceItem(service);
if (null == info || null == item || null == bluetoothClient)
{
lastError = "Device, service or client not set";
return("False");
}
if (null == bluetoothStreamWriter)
{
lastError = "Cannot write to device.";
return("False");
}
try
{
bluetoothStreamWriter.Write((string)data);
bluetoothStreamWriter.Flush();
}
catch (Exception ex)
{
Utilities.OnError(Utilities.GetCurrentMethod(), ex);
lastError = ex.Message;
return("False");
}
return("True");
}
private static void setServices()
{
bluetoothServiceItems.Clear();
FieldInfo[] fields = typeof(BluetoothService).GetFields(BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly);
foreach (FieldInfo field in fields)
{
Object obj = field.GetValue(null);
if (obj.GetType() == typeof(Guid))
{
BluetoothServiceItem item = new BluetoothServiceItem((Guid)obj, field.Name);
bluetoothServiceItems.Add(item);
}
}
}
/// <summary>
/// Advanced feature.
/// Receive (fetch) data from a bluetooth device.
/// The device must be Initialised and Connected.
/// The encoding should also be set.
/// </summary>
/// <returns>String of received characters or "" on failure.</returns>
public static Primitive ReceiveData()
{
string result = "";
BluetoothDeviceInfo info = GetBluetoothDeviceInfo(device);
BluetoothServiceItem item = GetBluetoothServiceItem(service);
if (null == info || null == item || null == bluetoothClient)
{
lastError = "Device, service or client not set";
return(result);
}
if (null == bluetoothStreamReader)
{
lastError = "Cannot read from device.";
return(result);
}
try
{
Char[] buf = new Char[100];
int numRead = 1;
while (numRead > 0)
{
numRead = bluetoothStreamReader.Read(buf, 0, buf.Length);
if (numRead > 0)
{
result += new string(buf, 0, numRead);
}
}
}
catch (Exception ex)
{
Utilities.OnError(Utilities.GetCurrentMethod(), ex);
lastError = ex.Message;
return(result);
}
return(result);
}
/// <summary>
/// Advanced feature.
/// Connect an external device and service to the bluetooth USB stick.
/// You must first Initialise, then set the device, service and encoding.
/// </summary>
/// <returns>"True" or "False" on success or failure.</returns>
public static Primitive Connect()
{
BluetoothDeviceInfo info = GetBluetoothDeviceInfo(device);
BluetoothServiceItem item = GetBluetoothServiceItem(service);
if (null == info || null == item || null == bluetoothClient)
{
lastError = "Device, service or client not set";
return("False");
}
try
{
bluetoothClient.Connect(info.DeviceAddress, item.guid);
bluetoothStreamWriter = new StreamWriter(bluetoothClient.GetStream(), encoding);
bluetoothStreamReader = new StreamReader(bluetoothClient.GetStream(), encoding);
}
catch (Exception ex)
{
Utilities.OnError(Utilities.GetCurrentMethod(), ex);
lastError = ex.Message;
return("False");
}
return("True");
}
private static void setServices()
{
bluetoothServiceItems.Clear();
FieldInfo[] fields = typeof(BluetoothService).GetFields(BindingFlags.Static | BindingFlags.Public | BindingFlags.DeclaredOnly);
foreach (FieldInfo field in fields)
{
Object obj = field.GetValue(null);
if (obj.GetType() == typeof(Guid))
{
BluetoothServiceItem item = new BluetoothServiceItem((Guid)obj, field.Name);
bluetoothServiceItems.Add(item);
}
}
}
