Meadow.Foundation.Sensors.Environmental.Scd30
Scd30 | |
---|---|
Status | |
Source code | GitHub |
Datasheet(s) | GitHub |
NuGet package |
Code Example
Scd30 sensor;
public override Task Initialize()
{
Resolver.Log.Info("Initializing...");
var i2cBus = Device.CreateI2cBus(Meadow.Hardware.I2cBusSpeed.Standard);
sensor = new Scd30(i2cBus);
var consumer = Scd30.CreateObserver(
handler: result =>
{
Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
},
filter: result =>
{
if (result.Old?.Temperature is { } oldTemp &&
result.Old?.Humidity is { } oldHumidity &&
result.New.Temperature is { } newTemp &&
result.New.Humidity is { } newHumidity)
{
return ((newTemp - oldTemp).Abs().Celsius > 0.5 &&
(newHumidity - oldHumidity).Percent > 0.05);
}
return false;
}
);
sensor?.Subscribe(consumer);
if (sensor != null)
{
sensor.Updated += (sender, result) =>
{
Resolver.Log.Info($" Concentration: {result.New.Concentration?.PartsPerMillion:N0}ppm");
Resolver.Log.Info($" Temperature: {result.New.Temperature?.Celsius:N1}C");
Resolver.Log.Info($" Relative Humidity: {result.New.Humidity:N0}%");
};
}
//The value 5 is used purely for demonstration purposes. 2 is the sensor default.
sensor?.SetMeasurementInterval(5);
var measurementInterval = sensor?.GetMeasurementInterval();
Resolver.Log.Info($"Measurement Interval: {measurementInterval}sec");
var autoSelfCalibration = sensor?.SelfCalibrationEnabled();
Resolver.Log.Info($"Auto Self Calibration: {autoSelfCalibration}");
var ambientPressure = sensor?.GetAmbientPressureOffset();
Resolver.Log.Info($"Ambient Pressure offset: {ambientPressure}mbar");
var altitudeOffset = sensor?.GetAltitudeOffset();
Resolver.Log.Info($"Altitude Offset: {altitudeOffset}m");
var temperatureOffset = sensor?.GetTemperatureOffset();
Resolver.Log.Info($"Temperature Offset: {temperatureOffset}C");
var forceCalibrationValue = sensor?.GetForceCalibrationValue();
Resolver.Log.Info($"Force Calibration Value: {forceCalibrationValue}");
sensor?.StartUpdating(TimeSpan.FromSeconds(5));
return base.Initialize();
}
Sample project(s) available on GitHub
Class Scd30
Represents an SCD30 C02 sensor
Assembly: Scd30.dll
View Source
public class Scd30 : Scd30Base, IObservable<IChangeResult<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)>>, ISamplingSensor<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)>, ISensor<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)>, IDisposable, ITemperatureSensor, ISamplingSensor<Temperature>, ISensor<Temperature>, IHumiditySensor, ISamplingSensor<RelativeHumidity>, ISensor<RelativeHumidity>, ICO2ConcentrationSensor, ISamplingSensor<Concentration>, ISensor<Concentration>, ISensor, ISamplingSensor, II2cPeripheral
Inheritance: System.Object
-> Meadow.Foundation.ObservableBase<UNIT>
Implements:
Expand
System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>>
, Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
, Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
, System.IDisposable
, Meadow.Peripherals.Sensors.ITemperatureSensor
, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>
, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>
, Meadow.Peripherals.Sensors.Atmospheric.IHumiditySensor
, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.RelativeHumidity>
, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.RelativeHumidity>
, Meadow.Peripherals.Sensors.Environmental.ICO2ConcentrationSensor
, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Concentration>
, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Concentration>
, Meadow.Peripherals.Sensors.ISensor
, Meadow.Peripherals.Sensors.ISamplingSensor
, Meadow.Hardware.II2cPeripheral
Implements
System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>>
Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
System.IDisposable
Meadow.Peripherals.Sensors.ITemperatureSensor
Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>
Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>
Meadow.Peripherals.Sensors.Atmospheric.IHumiditySensor
Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.RelativeHumidity>
Meadow.Peripherals.Sensors.ISensor<Meadow.Units.RelativeHumidity>
Meadow.Peripherals.Sensors.Environmental.ICO2ConcentrationSensor
Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Concentration>
Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Concentration>
Meadow.Peripherals.Sensors.ISensor
Meadow.Peripherals.Sensors.ISamplingSensor
Meadow.Hardware.II2cPeripheral