Meadow.Foundation.Sensors.Light.Alspt19315C 1.3.0

Meadow.Foundation.Sensors.Light.Alspt19315C

ALS-PT19-315C analog light sensor

The Alspt19315C library is designed for the Wilderness Labs Meadow .NET IoT platform and is part of Meadow.Foundation

The Meadow.Foundation peripherals library is an open-source repository of drivers and libraries that streamline and simplify adding hardware to your C# .NET Meadow IoT application.

For more information on developing for Meadow, visit developer.wildernesslabs.co, to view all of Wilderness Labs open-source projects, including samples, visit github.com/wildernesslabs

Usage

Alspt19315C sensor;

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

    // configure our sensor
    sensor = new Alspt19315C(Device.Pins.A03);

    //==== IObservable Pattern with an optional notification filter
    var consumer = Alspt19315C.CreateObserver(
        handler: result => Resolver.Log.Info($"Observer filter satisfied: {result.New.Volts:N2}V, old: {result.Old?.Volts:N2}V"),

        // only notify if the change is greater than 0.5V
        filter: result =>
        {
            if (result.Old is { } old)
            { //c# 8 pattern match syntax. checks for !null and assigns var.
                return (result.New - old).Abs().Volts > 0.5; // returns true if > 0.5V change.
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    //==== Classic Events Pattern
    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"Voltage Changed, new: {result.New.Volts:N2}V, old: {result.Old?.Volts:N2}V");
    };

    return Task.CompletedTask;
}

public override async Task Run()
{
    var result = await sensor.Read();
    Resolver.Log.Info($"Initial temp: {result.Volts:N2}V");

    sensor.StartUpdating(TimeSpan.FromMilliseconds(1000));
}