Meadow.Foundation.Sensors.Atmospheric.Ms5611 1.3.0

Meadow.Foundation.Sensors.Atmospheric.Ms5611

MS5611 I2C altimeter and barometric pressure sensor

The Ms5611 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

Ms5611 sensor;

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

    sensor = new Ms5611(Device.CreateI2cBus());

    var consumer = Ms5611.CreateObserver(
        handler: result =>
        {
            Resolver.Log.Info($"Observer: Temp changed by threshold; new temp: {result.New.Temperature?.Celsius:N2}C, old: {result.Old?.Temperature?.Celsius:N2}C");
        },
        filter: result =>
        {
            //c# 8 pattern match syntax. checks for !null and assigns var.
            if (result.Old is { } old)
            {
                return (
                (result.New.Temperature.Value - old.Temperature.Value).Abs().Celsius > 0.5
                &&
                (result.New.Pressure.Value - old.Pressure.Value).Millibar > 0.5
                );
            }
            return false;
        }
    );
    sensor.Subscribe(consumer);

    sensor.Updated += (sender, result) => {
        Resolver.Log.Info($"  Temperature: {result.New.Temperature?.Celsius:N2}C");
        Resolver.Log.Info($"  Pressure: {result.New.Pressure?.Millibar:N2}mbar ({result.New.Pressure?.Pascal:N2}Pa)");
    };

    return Task.CompletedTask;
}

public async override Task Run()
{
    var conditions = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($" Temperature: {conditions.Temperature?.Celsius:N2}C");
    Resolver.Log.Info($" Pressure: {conditions.Pressure?.Bar:N2}hPa");

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