public async Task RegisterForTemperatureChanges(BluetoothLEDevice bluetoothLeDevice)
{
var service = await bluetoothLeDevice.GetGattServiceForUuidAsync(serviceGuid);
var accessStatus = await service.RequestAccessAsync();
var openStatus = await service.OpenAsync(GattSharingMode.Exclusive);
foreach (var characteristics in await service.GetCharacteristics2Async())
{
if (!Probes.Contains(characteristics.Uuid))
{
continue;
}
Debug.WriteLine("Registering probe " + characteristics.Uuid);
await characteristics.WriteClientCharacteristicConfigurationDescriptorAsync(GattClientCharacteristicConfigurationDescriptorValue.Notify);
var byteArray = await characteristics.ReadBytesAsync();
TemperatureChanged?.Invoke(this, new TemperatureChangedEventArg(
Probes.IndexOf(characteristics.Uuid), CalculateTemperature(byteArray)));
characteristics.ValueChanged += (GattCharacteristic sender, GattValueChangedEventArgs args) =>
{
var temperature = ReadTemperature(args.CharacteristicValue);
TemperatureChanged?.Invoke(this, new TemperatureChangedEventArg(
Probes.IndexOf(characteristics.Uuid), CalculateTemperature(temperature)));
};
}
}
/// <summary>
/// Update the temperature on Flutter using the event.
/// </summary>
/// <param name="celsius"></param>
public void OnTemperatureChanged(double celsius, double fahrenheit)
{
// Send the event to flutter
TemperatureChanged?.Invoke(this, new TemperatureChangedArgs {
Celsius = celsius, Fahrenheit = fahrenheit
});
}
public void CheckSensor()
{
if (_rawDevice == null || _rawDevice.Handle == IntPtr.Zero || _handler == null || _temperatureConversion == null || _humidityConversion == null)
{
return;
}
ReadSensor(out var humidity, out var temperature);
if (humidity.HasValue)
{
if (!Equals(Humidity, humidity))
{
HumidityChanged?.Invoke(this, new HumidityChangedEventArgs(humidity.Value));
}
Humidity = humidity;
}
if (temperature.HasValue)
{
if (!Equals(Temperature, temperature))
{
TemperatureChanged?.Invoke(this, new TemperatureChangedEventArgs(temperature.Value));
}
Temperature = temperature;
}
_handler.PostDelayed(_listenerAction, DELAY_MS);
}
/// <summary>
/// Updates the current temparature
/// </summary>
/// <param name="temperature"></param>
public override void UpdateTemperature(ITemperature temperature)
{
var temp = temperature.Unit != ThermometerUnit
? temperature.Convert(ThermometerUnit)
: temperature;
base.UpdateTemperature(temp);
TemperatureChanged?.Invoke(null, new TemperatureChangedEventArgs(Temperature));
}
/// <summary>
/// Called when a barometer value is being notified
/// </summary>
/// <param name="characteristic">Characteristic which notified the value</param>
/// <param name="value">New characteristic value</param>
private void OnBarometerNotification(BleGattCharacteristic characteristic, BleValue value)
{
if (characteristic.Guid == PressureGuid)
{
PressureChanged?.Invoke(value.ToUInt32());
}
else if (characteristic.Guid == TemperatureGuid)
{
TemperatureChanged?.Invoke(value.ToInt16());
}
else
{
}
}
// Performs the actual invocation of delegates
private void OnTemperatureChanged()
{
// If TemperatureChanged is not null, Invoke all of them
TemperatureChanged?.Invoke(_temperature);
}
protected virtual void OnTemperatureChanged(MeasurementChangedEventArgs e)
{
TemperatureChanged?.Invoke(this, e);
}
public override void UpdateTemperature(double temperature)
{
base.UpdateTemperature(temperature);
TemperatureChanged?.Invoke(null, new TemperatureChangedEventArgs(Temperature));
}
private void OnTemperatureChanged(object sender, EventArgs e)
{
float.TryParse(txtTemperature.Text, out _temperature);
_eventArgs.Temperature = _temperature;
TemperatureChanged?.Invoke(this, _eventArgs);
}
public void NotifyOnTempratureChanged(TemperatureChangedEventArgs temperatureChangedEventArgs)
{
TemperatureChanged?.Invoke(temperatureChangedEventArgs);
}
private void OnTemperatureChanged()
{
TemperatureChanged?.Invoke(_temperature);
}