public override async Task Refresh( )
{
await base.Refresh( );
if (!Characteristics.Characteristics.TryGetValue(HeightSpeed,
out var heightAndSpeed) ||
heightAndSpeed == null)
{
Logger.Error("Failed to find characteristic for Height and Speed " +
$"with UUID '{HeightSpeed}'");
return;
}
_subscriber?.Dispose( ); // Attention: this is to hard to test
_subscriber = heightAndSpeed.ValueChanged
.SubscribeOn(Scheduler)
.Subscribe(OnValueChanged);
var rawValue = GetValueOrEmpty(HeightSpeed).ToArray( );
var details = new RawValueChangedDetails(HeightSpeed,
rawValue,
DateTimeOffset.Now,
GattServiceUuid);
_subjectHeightSpeed.OnNext(details);
}
private void OnValueChanged(GattCharacteristicValueChangedDetails details)
{
if (details == null)
{
Logger.Error($"{typeof ( GattCharacteristicValueChangedDetails )} is null");
return;
}
Logger.Debug($"Value = {details.Value.ToHex ( )}, " +
$"Timestamp = {details.Timestamp}, " +
$"Uuid = {details.Uuid}");
if (details.Value.Count( ) != 4)
{
Logger.Error($"Failed, expected 4 bytes but received {details.Value.Count ( )}");
return;
}
var valueChanged = new RawValueChangedDetails(HeightSpeed,
details.Value,
details.Timestamp,
details.Uuid);
_subjectHeightSpeed.OnNext(valueChanged);
}
