static NativeMethods.BLUETOOTH_GATT_FLAGS GetGattFlags(BleRequestFlags requestFlags)
{
NativeMethods.BLUETOOTH_GATT_FLAGS flags = 0;
if (0 != (requestFlags & BleRequestFlags.Authenticated))
{
flags |= NativeMethods.BLUETOOTH_GATT_FLAGS.AUTHENTICATED;
}
if (0 != (requestFlags & BleRequestFlags.Encrypted))
{
flags |= NativeMethods.BLUETOOTH_GATT_FLAGS.ENCRYPTED;
}
return(flags);
}
unsafe void WriteCharacteristic(BleCharacteristic characteristic, byte[] value, int offset, int count, NativeMethods.BLUETOOTH_GATT_FLAGS flags)
{
Throw.If.Null(characteristic, "characteristic").Null(value, "value").OutOfRange(value, offset, count);
HandleAcquireIfOpenOrFail();
try
{
lock (_writeSync)
{
int error;
var wc = (WinBleCharacteristic)characteristic;
var cb = stackalloc byte[NativeMethods.BTH_LE_GATT_CHARACTERISTIC_VALUE.Size + count];
var cv = (NativeMethods.BTH_LE_GATT_CHARACTERISTIC_VALUE *)cb;
cv->DataSize = (uint)count; Marshal.Copy(value, offset, (IntPtr)(void *)&cv->Data[0], count);
error = NativeMethods.BluetoothGATTSetCharacteristicValue(_handle, ref wc.NativeData, cv, 0, flags);
if (error != 0)
{
var message = string.Format("Failed to write {0} bytes to characteristic {1}.", count, characteristic);
throw DeviceException.CreateIOException(Device, message, error);
}
}
}
finally
{
HandleRelease();
}
}