Meadow.Foundation.Sensors.Distance.A02yyuw 1.8.0

Meadow.Foundation.Sensors.Distance.A02yyuw

A02yyuw serial ultrasonic distance sensor

The A02yyuw 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

A02yyuw a02yyuw;

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

    a02yyuw = new A02yyuw(Device, Device.PlatformOS.GetSerialPortName("COM4"));

    var consumer = A02yyuw.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Distance changed by threshold; new distance: {result.New.Centimeters:N1}cm, old: {result.Old?.Centimeters:N1}cm");
        },
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return Math.Abs((result.New - old).Centimeters) > 5.0;
            }
            return false;
        }
    );
    a02yyuw.Subscribe(consumer);

    a02yyuw.Updated += A02yyuw_DistanceUpdated;

    return Task.CompletedTask;
}

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

    var distance = await a02yyuw.Read();
    Resolver.Log.Info($"Initial distance is: {distance.Centimeters:N1}cm / {distance.Inches:N1}in");

    a02yyuw.StartUpdating(TimeSpan.FromSeconds(2));
}

private void A02yyuw_DistanceUpdated(object sender, IChangeResult<Length> e)
{
    Resolver.Log.Info($"Distance: {e.New.Centimeters:N1}cm / {e.New.Inches:N1}in");
}

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.