Class Scd30Base
Base class for SCD30 C02 sensor
Assembly: Scd30.dll
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public abstract class Scd30Base : ByteCommsSensorBase<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)>, 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>
Derived:
Meadow.Foundation.Sensors.Environmental.Scd30
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
Properties
CO2Concentration
The current C02 concentration value
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public Concentration? CO2Concentration { get; }
Temperature
The current temperature
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public Temperature? Temperature { get; }
Humidity
The current humidity
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public RelativeHumidity? Humidity { get; }
DefaultI2cAddress
The default I2C address for the peripheral
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public byte DefaultI2cAddress { get; }
Methods
PerformSoftReset()
Soft reset the device
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public Task PerformSoftReset()
Returns
System.Threading.Tasks.Task
IsDataReady()
Is there sensor measurement data ready
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protected bool IsDataReady()
Returns
System.Boolean: True if ready### SetMeasurementInterval(ushort)
Set the interval between measurements of the sensor itself.
Sensor reads data between 2 or 1800 seconds.
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public void SetMeasurementInterval(ushort interval)
Parameters
| Type | Name |
|---|---|
System.UInt16 | interval |
GetMeasurementInterval()
Get the interval between measurements of the sensor itself. Sensor reads data between 2 or 1800 seconds.
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public ushort GetMeasurementInterval()
Returns
System.UInt16
SelfCalibrationEnabled()
Get the status of the automatic self calibration
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public bool SelfCalibrationEnabled()
Returns
System.Boolean: True if auto calibration is enabled### SetAutoCalibration(bool)
Enables or disables the automatic self calibration
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protected bool SetAutoCalibration(bool enabled)
Returns
System.Boolean: True if auto read from register is the same as given
Parameters
| Type | Name |
|---|---|
System.Boolean | enabled |
StartUpdating(TimeSpan?)
Starts measuring sensor data.
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public override void StartUpdating(TimeSpan? updateInterval = null)
Parameters
| Type | Name | Description |
|---|---|---|
System.Nullable<System.TimeSpan> | updateInterval | The sensor updates based on the measurement interval between 2 and 1800 seconds. |
Its recommended to choose an update interval between that. You can change the measurement interval later with Meadow.Foundation.Sensors.Environmental.Scd30Base.SetMeasurementInterval(ushort). |
StartUpdating(ushort, TimeSpan)
Starts measuring sensor data.
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public void StartUpdating(ushort ambientPressure, TimeSpan updateInterval)
Parameters
| Type | Name | Description |
|---|---|---|
System.UInt16 | ambientPressure | Optional parameter to set the ambient pressure in mBar. |
System.TimeSpan | updateInterval | The sensor updates based on the measurement interval between 2 and 1800 seconds. |
Its recommended to choose an update interval between that. You can change the measurement interval later with Meadow.Foundation.Sensors.Environmental.Scd30Base.SetMeasurementInterval(ushort). |
GetAmbientPressureOffset()
Gets the ambient pressure setting used when measuring started.
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public ushort GetAmbientPressureOffset()
Returns
System.UInt16
SetAltitudeOffset(ushort)
Sets the Altitude used for ambient pressure calibration. This value is stored on the sensor, even after reboot.
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public void SetAltitudeOffset(ushort altitude)
Parameters
| Type | Name | Description |
|---|---|---|
System.UInt16 | altitude | Altitude in meters above sea level. |
GetAltitudeOffset()
Gets the Altitude used for ambient pressure calibration.
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public ushort GetAltitudeOffset()
Returns
System.UInt16
SetTemperatureOffset(ushort)
Sets the temperature to set in hundredths of degrees, used for temperature compensation.
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public void SetTemperatureOffset(ushort offset)
Parameters
| Type | Name |
|---|---|
System.UInt16 | offset |
GetTemperatureOffset()
Get the temperature to set in hundredths of degrees, used for temperature compensation.
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public ushort GetTemperatureOffset()
Returns
System.UInt16
ForceCalibration(ushort)
Forces the sensor to recalibrate it's CO2 sensor.
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public void ForceCalibration(ushort reference)
Parameters
| Type | Name | Description |
|---|---|---|
System.UInt16 | reference | The calibration value between 400 and 2000 ppm. |
| This value is saved in the sensor, even after reboot. |
GetForceCalibrationValue()
Get the value used for forced recalibration.
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public ushort GetForceCalibrationValue()
Returns
System.UInt16
StopUpdating()
Stop updating the sensor
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public override void StopUpdating()
ReadSensor()
Get Scd30 sensor values.
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protected override Task<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)> ReadSensor()
Returns
System.Threading.Tasks.Task<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>>
RaiseChangedAndNotify(IChangeResult<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)>)
Raise change events for subscribers
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protected void RaiseChangedAndNotify(IChangeResult<(Concentration? Concentration, Temperature? Temperature, RelativeHumidity? Humidity)> changeResult)
Parameters
| Type | Name | Description |
|---|---|---|
Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Concentration>,System.Nullable<Meadow.Units.Temperature>,System.Nullable<Meadow.Units.RelativeHumidity>>> | changeResult | The change result with the current sensor data |
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.IDisposableMeadow.Peripherals.Sensors.ITemperatureSensorMeadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Temperature>Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Temperature>Meadow.Peripherals.Sensors.Atmospheric.IHumiditySensorMeadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.RelativeHumidity>Meadow.Peripherals.Sensors.ISensor<Meadow.Units.RelativeHumidity>Meadow.Peripherals.Sensors.Environmental.ICO2ConcentrationSensorMeadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Concentration>Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Concentration>Meadow.Peripherals.Sensors.ISensorMeadow.Peripherals.Sensors.ISamplingSensorMeadow.Hardware.II2cPeripheral