Meadow.Foundation.Sensors.Light.Tsl2591

Tsl2591
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

Code Example

private Tsl2591 sensor;

public override Task Initialize()
{
    Resolver.Log.Info("Initialize...");

    // configure our sensor on the I2C Bus
    var i2c = Device.CreateI2cBus();
    sensor = new Tsl2591(i2c);

    // Example that uses an IObservable subscription to only be notified when the filter is satisfied
    var consumer = Tsl2591.CreateObserver(
        handler: result => Resolver.Log.Info($"Observer: filter satisfied: {result.New.VisibleLight?.Lux:N2}Lux, old: {result.Old?.VisibleLight?.Lux:N2}Lux"),
        // only notify if the visible light changes by 100 lux (put your hand over the sensor to trigger)
        filter: result =>
        {
            if (result.Old is { } old)
            {
                // returns true if > 100lux change
                return ((result.New.VisibleLight.Value - old.VisibleLight.Value).Abs().Lux > 100);
            }
            return false;
        });
    sensor.Subscribe(consumer);

    // classical .NET events can also be used:
    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"  Integrated Light: {result.New.Lux:N2}Lux");
    };

    sensor.InfraredUpdated += (sender, result) =>
    {
        Resolver.Log.Info($"  Infrared Light: {result.New.Lux:N2}Lux");
    };

    sensor.VisibleLightUpdated += (sender, result) =>
    {
        Resolver.Log.Info($"  Visible Light: {result.New.Lux:N2}Lux");
    };

    sensor.FullSpectrumUpdated += (sender, result) =>
    {
        Resolver.Log.Info($"  Full Spectrum Light: {result.New.Lux:N2}Lux");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var result = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"  Full Spectrum Light: {result.FullSpectrum?.Lux:N2}Lux");
    Resolver.Log.Info($"  Infrared Light: {result.Infrared?.Lux:N2}Lux");
    Resolver.Log.Info($"  Visible Light: {result.VisibleLight?.Lux:N2}Lux");
    Resolver.Log.Info($"  Integrated Light: {result.Integrated?.Lux:N2}Lux");

    sensor.StartUpdating(TimeSpan.FromSeconds(1));
}

Sample project(s) available on GitHub

Class Tsl2591

Driver for the TSL2591 light-to-digital converter

Assembly: Tsl2591.dll

View Source

Declaration

public class Tsl2591 : ByteCommsSensorBase<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)>, IObservable<IChangeResult<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)>>, ISamplingSensor<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)>, ISensor<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)>, ILightSensor, ISamplingSensor<Illuminance>, ISensor<Illuminance>, ISensor, ISamplingSensor, IDisposable, IPowerControllablePeripheral

Inheritance: System.Object -> Meadow.Foundation.ObservableBase<UNIT>

Implements:

Expand

System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>>, Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>, Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>, Meadow.Peripherals.Sensors.Light.ILightSensor, Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Illuminance>, Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Illuminance>, Meadow.Peripherals.Sensors.ISensor, Meadow.Peripherals.Sensors.ISamplingSensor, System.IDisposable, Meadow.IPowerControllablePeripheral

Properties

PackageID

Sensor package ID

View Source

Declaration

public int PackageID { get; }

DeviceID

Sensor device ID

View Source

Declaration

public int DeviceID { get; }

Gain

Gain of the sensor

View Source

Declaration

public Tsl2591.GainFactor Gain { get; set; }

IntegrationTime

Integration time for the sensor

View Source

Declaration

public Tsl2591.IntegrationTimes IntegrationTime { get; set; }

FullSpectrumLuminosity

Full spectrum luminosity (visible and infrared light combined)

View Source

Declaration

public Illuminance? FullSpectrumLuminosity { get; }

InfraredLuminosity

Infrared light luminosity

View Source

Declaration

public Illuminance? InfraredLuminosity { get; }

VisibleLightLuminosity

Visible light luminosity

View Source

Declaration

public Illuminance? VisibleLightLuminosity { get; }

Illuminance

Visible lux

View Source

Declaration

public Illuminance? Illuminance { get; }

Methods

ReadSensor()

Reads data from the sensor

View Source

Declaration

protected override Task<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)> ReadSensor()

Returns

System.Threading.Tasks.Task<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>: The latest sensor reading### RaiseEventsAndNotify(IChangeResult<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)>) Raise events for subscribers and notify of value changes

View Source

Declaration

protected override void RaiseEventsAndNotify(IChangeResult<(Illuminance? FullSpectrum, Illuminance? Infrared, Illuminance? VisibleLight, Illuminance? Integrated)> changeResult)

Parameters

Type	Name	Description
Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>	changeResult	The updated sensor data

PowerOn()

Power the sensor on

View Source

Declaration

public Task PowerOn()

Returns

System.Threading.Tasks.Task

PowerOff()

Power the sensor off

View Source

Declaration

public Task PowerOff()

Returns

System.Threading.Tasks.Task

Events

FullSpectrumUpdated

Raised when Full Spectrum Illuminance value changes

View Source

Declaration

public event EventHandler<IChangeResult<Illuminance>> FullSpectrumUpdated

Event Type

System.EventHandler<Meadow.IChangeResult<Meadow.Units.Illuminance>>

InfraredUpdated

Raised when Infrared Illuminance value changes

View Source

Declaration

public event EventHandler<IChangeResult<Illuminance>> InfraredUpdated

Event Type

System.EventHandler<Meadow.IChangeResult<Meadow.Units.Illuminance>>

VisibleLightUpdated

Raised when Visible Light value changes

View Source

Declaration

public event EventHandler<IChangeResult<Illuminance>> VisibleLightUpdated

Event Type

System.EventHandler<Meadow.IChangeResult<Meadow.Units.Illuminance>>

Updated

Raised when Luminosity value changes

View Source

Declaration

public event EventHandler<IChangeResult<Illuminance>> Updated

Event Type

System.EventHandler<Meadow.IChangeResult<Meadow.Units.Illuminance>>

Implements

• System.IObservable<Meadow.IChangeResult<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>>
• Meadow.Peripherals.Sensors.ISamplingSensor<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>
• Meadow.Peripherals.Sensors.ISensor<System.ValueTuple<System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>,System.Nullable<Meadow.Units.Illuminance>>>
• Meadow.Peripherals.Sensors.Light.ILightSensor
• Meadow.Peripherals.Sensors.ISamplingSensor<Meadow.Units.Illuminance>
• Meadow.Peripherals.Sensors.ISensor<Meadow.Units.Illuminance>
• Meadow.Peripherals.Sensors.ISensor
• Meadow.Peripherals.Sensors.ISamplingSensor
• System.IDisposable
• Meadow.IPowerControllablePeripheral