internal Task <bool> WriteValueAsyncTask(BluetoothGattAttributeHandle handle)
{
TaskCompletionSource <bool> tcs = new TaskCompletionSource <bool>();
Interop.Bluetooth.BtGattClientRequestCompletedCallback cb = (result, requestHandle, userData) =>
{
if (result == (int)BluetoothError.None)
{
tcs.SetResult(true);
}
else
{
tcs.SetResult(false);
}
};
int err = Interop.Bluetooth.BtGattClientWriteValue(handle, cb, IntPtr.Zero);
if (err.IsFailed())
{
GattUtil.Error(err, "Failed to write value to remote device");
tcs.SetResult(false);
BluetoothErrorFactory.ThrowBluetoothException(err);
}
return(tcs.Task);
}
internal BluetoothGattClientImpl(string remoteAddress)
{
_readValueCallback = ReadValueCallback;
_writeValueCallback = WriteValueCallback;
if (BluetoothAdapter.IsBluetoothEnabled)
{
int err = Interop.Bluetooth.BtGattClientCreate(remoteAddress, out _handle);
GattUtil.ThrowForError(err, "Failed to get native client handle");
}
else
{
BluetoothErrorFactory.ThrowBluetoothException((int)BluetoothError.NotEnabled);
}
}