Meadow.Foundation.Sensors.Environmental.DFRobotGravityDOMeter 1.8.0

Meadow.Foundation.Sensors.Environmental.DFRobotGravityDOMeter

DFRobot analog gravity dissolved oxygen sensor

The DFRobotGravityDOMeter 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 Wilderness Labs open-source projects, including samples, visit github.com/wildernesslabs.

Usage

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");
}

How to Contribute

• Found a bug? Report an issue
• Have a feature idea or driver request? Open a new feature request
• Want to contribute code? Fork the Meadow.Foundation repository and submit a pull request against the develop branch

Need Help?

If you have questions or need assistance, please join the Wilderness Labs community on Slack.