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Meadow.Foundation.Sensors.Motion.Adxl362

Adxl362
StatusStatus badge: working
Source codeGitHub
Datasheet(s)GitHub
NuGet packageNuGet Gallery for Meadow.Foundation.Sensors.Motion.Adxl3xx

ADXL362 is an ultra-low power, 3-axis MEMS accelerometer that consumes less than 2 μA at a 100 Hz output data rate and 270 nA when in motion triggered wake-up mode.

The ADXL362 is controlled via I2C.

Sample projects available on GitHub

Code Example​

Adxl362 sensor;

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

    // create the sensor driver
    sensor = new Adxl362(Device.CreateSpiBus(), Device.Pins.D00);

    // classical .NET events can also be used:
    sensor.Updated += (sender, result) =>
    {
        Resolver.Log.Info($"Accel: [X:{result.New.Acceleration3D?.X.MetersPerSecondSquared:N2}," +
            $"Y:{result.New.Acceleration3D?.Y.MetersPerSecondSquared:N2}," +
            $"Z:{result.New.Acceleration3D?.Z.MetersPerSecondSquared:N2} (m/s^2)]");

        Resolver.Log.Info($"Temp: {result.New.Temperature?.Celsius:N2}C");
    };

    // Example that uses an IObservable subscription to only be notified when the filter is satisfied
    var consumer = Adxl362.CreateObserver(
        handler: result => Resolver.Log.Info($"Observer: [x] changed by threshold; new [x]: X:{result.New.Acceleration3D?.X.MetersPerSecondSquared:N2}, old: X:{result.Old?.Acceleration3D?.X.MetersPerSecondSquared:N2}"),
        filter: result =>
        {
            if (result.Old is { } old)
            {
                return ((result.New.Acceleration3D - old.Acceleration3D)?.Y > new Acceleration(1, AU.MetersPerSecondSquared));
            }
            return false;
        });
    sensor.Subscribe(consumer);

    return Task.CompletedTask;
}

public async override Task Run()
{
    Resolver.Log.Info($"Device ID: {sensor.DeviceID}");

    var result = await sensor.Read();
    Resolver.Log.Info("Initial Readings:");
    Resolver.Log.Info($"Accel: [X:{result.Acceleration3D?.X.MetersPerSecondSquared:N2}," +
        $"Y:{result.Acceleration3D?.Y.MetersPerSecondSquared:N2}," +
        $"Z:{result.Acceleration3D?.Z.MetersPerSecondSquared:N2} (m/s^2)]");

    Resolver.Log.Info($"Temp: {result.Temperature?.Celsius:N2}C");

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

Sample project(s) available on GitHub

Usage​

The ADXL362 can operating in interrupt and polling mode. Polling applications are responsible for determining when a sensor is read. Interrupt applications will be notified when the sensor reading changes by + / - a threshold value.

Wiring Example​