Ens160 sensor;
public override Task Initialize()
{
Resolver.Log.Info("Initializing...");
var i2cBus = Device.CreateI2cBus(Meadow.Hardware.I2cBusSpeed.Standard);
sensor = new Ens160(i2cBus, (byte)Ens160.Addresses.Address_0x53);
var consumer = Ens160.CreateObserver(
handler: result =>
{
Resolver.Log.Info($"Observer: C02 concentration changed by threshold; new: {result.New.CO2Concentration?.PartsPerMillion:N0}ppm");
},
filter: result =>
{
if (result.Old?.CO2Concentration is { } oldCon &&
result.New.CO2Concentration is { } newCon)
{
return Math.Abs((newCon - oldCon).PartsPerMillion) > 10;
}
return false;
}
);
sensor?.Subscribe(consumer);
if (sensor != null)
{
sensor.Updated += (sender, result) =>
{
Resolver.Log.Info($" CO2 Concentration: {result.New.CO2Concentration?.PartsPerMillion:N0}ppm");
Resolver.Log.Info($" Ethanol Concentration: {result.New.EthanolConcentration?.PartsPerBillion:N0}ppb");
Resolver.Log.Info($" TVOC Concentration: {result.New.TVOCConcentration?.PartsPerBillion:N0}ppb");
Resolver.Log.Info($" AQI: {sensor.GetAirQualityIndex()}");
};
}
sensor?.StartUpdating(TimeSpan.FromSeconds(2));
return base.Initialize();
}
