/// <summary>
/// Get measurements from sensors
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void _timer_Tick(object sender, object e)
{
try {
if (_magnetometer.Connected)
{
var m = await _magnetometer.GetReadingAsync();
Debug.WriteLine("Magnetometer: " + m);
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
MagX.Text = $"{m.X:f2} uT";
MagY.Text = $"{m.Y:f2} uT";
MagZ.Text = $"{m.Z:f2} uT";
});
}
if (_barometer.Connected)
{
// Use HW oversample for less noise
_barometer.OverSampling = 3;
var b = await _barometer.GetReadingAsync();
Debug.WriteLine("Barometer: " + b);
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
BarPressure.Text = $"{b.Pressure:f2} hPa";
BarTemp.Text = $"{b.Temperature:f2}°C";
});
}
if (_tempHum.Connected)
{
// Bmp180 humidity sensor has a heater we can turn on if humidity is very high.
// Heating reduces sensor wetting and stiction on high humidity conditions.
// It also causes a temp gradient within the sensor and affects our dewpoint calculations.
var th = await _tempHum.GetReadingAsync();
Debug.WriteLine("TempHum: " + th);
Debug.WriteLine("Dewpoint: " + th.DewPoint);
await Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
RhTemp.Text = $"{th.Temperature:f2}°C";
RhHum.Text = $"{th.Humidity:f0}%";
RhDew.Text = $"{th.DewPoint:f2}°C";
});
if (th.Humidity > 80)
{
_tempHum.Heater = true;
}
else if (th.Humidity < 70)
{
_tempHum.Heater = false;
}
}
}
catch (Exception ex)
{
// TODO: deal with individual reading failures
Debug.WriteLine("A measurement failed: " + ex);
}
}
