Meadow.Foundation.Sensors.Environmental.DFRobotGravityDOMeter

DFRobotGravityDOMeter
Status
Source code	GitHub
NuGet package

Code Example

DFRobotGravityDOMeter sensor;

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

    sensor = new DFRobotGravityDOMeter(Device.Pins.A01);

    // Example that uses an IObservable subscription to only be notified when the saturation changes
    var consumer = DFRobotGravityDOMeter.CreateObserver(
        handler: result =>
        {
            string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter:n0}" : "n/a";
            string newValue = $"{result.New.MilligramsPerLiter:n0}";
            Resolver.Log.Info($"New: {newValue}mg/l, Old: {oldValue}mg/l");
        },
        filter: null
    );
    sensor.Subscribe(consumer);

    // optional classical .NET events can also be used:
    sensor.Updated += (sender, result) =>
    {
        string oldValue = (result.Old is { } old) ? $"{old.MilligramsPerLiter}mg/l" : "n/a";
        Resolver.Log.Info($"Updated - New: {result.New.MilligramsPerLiter:n0}mg/l, Old: {oldValue}");
    };

    return Task.CompletedTask;
}

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

    await ReadSensor();

    sensor.StartUpdating(TimeSpan.FromSeconds(2));
}

protected async Task ReadSensor()
{
    var concentration = await sensor.Read();
    Resolver.Log.Info($"Initial concentration: {concentration.MilligramsPerLiter:N0}mg/l");
}

Sample project(s) available on GitHub