async Task <byte[]> DoGetValue()
{
var result = await _characteristic.ReadValueAsync(Windows.Devices.Bluetooth.BluetoothCacheMode.Cached).AsTask().ConfigureAwait(false);
if (result.Status == Uap.GattCommunicationStatus.Success)
{
return(result.Value.ToArray());
}
return(null);
}
byte[] PlatformGetValue()
{
var result = _characteristic.ReadValueAsync(Windows.Devices.Bluetooth.BluetoothCacheMode.Cached).GetResults();
if (result.Status == Uap.GattCommunicationStatus.Success)
{
return(result.Value.ToArray());
}
return(null);
}
public async partial Task <ReadOnlyMemory <byte> > ReadAsync()
{
var result = await characteristic.ReadValueAsync(BluetoothCacheMode.Uncached);
Platform.AssertStatus(result.Status, result.ProtocolError);
return(result.Value.ToArray());
}
private async void CharacteristicReadButton_Click()
{
// BT_Code: Read the actual value from the device by using Uncached.
GattReadResult result = await selectedCharacteristic.ReadValueAsync(BluetoothCacheMode.Uncached);
if (result.Status == GattCommunicationStatus.Success)
{
string formattedResult = FormatValueByPresentation(result.Value, presentationFormat);
rootPage.NotifyUser($"Read result: {formattedResult}", NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser($"Read failed: {result.Status}", NotifyType.ErrorMessage);
}
}
async Task <Memory <byte> > _ReadValueAsync()
{
var result = await characteristic.ReadValueAsync();
switch (result.Status)
{
case Win.GattCommunicationStatus.Success:
var data = new byte[result.Value.Length];
var reader = DataReader.FromBuffer(result.Value);
reader.ReadBytes(data);
return((Memory <byte>)data);
case Win.GattCommunicationStatus.AccessDenied:
throw new AccessViolationException("Access denied");
case Win.GattCommunicationStatus.ProtocolError:
throw new FormatException($"Protocol error: {result.ProtocolError}");
case Win.GattCommunicationStatus.Unreachable:
// TODO: more specific exception
throw new Exception("Unreachable");
}
throw new ArgumentException("Unknown status");
}