private Mpl3115a2 mpl3115a2; // Altitue, pressure and temperature sensor
/// <summary>
/// Constructs WeatherShield with I2C bus and status LEDs identified
/// </summary>
/// <param name="i2cBusName"></param>
/// <param name="ledBluePin"></param>
/// <param name="ledGreenPin"></param>
public WeatherShield(string i2cBusName, int ledBluePin, int ledGreenPin)
{
statusLedBluePin = ledBluePin;
statusLedGreenPin = ledGreenPin;
htu21d = new Htu21d(i2cBusName);
mpl3115a2 = new Mpl3115a2(i2cBusName);
}
public MeadowApp()
{
Console.WriteLine("Initializing...");
// configure our BME280 on the I2C Bus
var i2c = Device.CreateI2cBus();
mpl3115A2 = new Mpl3115a2(i2c);
// Example that uses an IObersvable subscription to only be notified
// when the temperature changes by at least a degree, and humidty by 5%.
// (blowing hot breath on the sensor should trigger)
mpl3115A2.Subscribe(new FilterableObserver <AtmosphericConditionChangeResult, AtmosphericConditions>(
h => {
Console.WriteLine($"Temp and pressure changed by threshold; new temp: {h.New.Temperature}, old: {h.Old.Temperature}");
},
e =>
{
return
(
(Math.Abs(e.Delta.Temperature.Value) > 1) &&
(Math.Abs(e.Delta.Pressure.Value) > 5)
);
}
));
// classical .NET events can also be used:
mpl3115A2.Updated += (object sender, AtmosphericConditionChangeResult e) =>
{
Console.WriteLine($"Temperature: {e.New.Temperature}C, Pressure: {e.New.Pressure}hPa");
};
// get an initial reading
ReadConditions().Wait();
Console.WriteLine("Begin updates");
// start updating continuously
mpl3115A2.StartUpdating();
}
