Meadow.Foundation.Sensors.Motion.Adxl362

Adxl362
Status
Source code	GitHub
Datasheet(s)	GitHub
NuGet package

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

Class Adxl362

Driver for the ADXL362 triple axis accelerometer

Type	Name	Description
`System.UInt16`	threshold	11-bit unsigned value for the activity threshold.
`System.Byte`	numberOfSamples	Number of consecutive samples that must exceed the threshold

Code Example​

Usage​

Wiring Example​

Class Adxl362

Assembly: Adxl3xx.dll​

Properties​

Acceleration3D​

Temperature​

DefaultSpiBusSpeed​

SpiBusSpeed​

DefaultSpiBusMode​

SpiBusMode​

DataReady​

FIFOReady​

FIFOWatermark​

FIFOOverrun​

ActivityDetected​

InactivityDetected​

IsAwake​

DeviceID​

Status​

ActivityInactivityControl​

SelfTest​

FilterControl​

Methods​

RaiseEventsAndNotify(IChangeResult<(Acceleration3D? Acceleration3D, Temperature? Temperature)>)​

Parameters​

Reset()​

Start()​

Stop()​

Read()​

Returns​

Parameters​

StopUpdating()​

ReadSensor()​

Returns​

Parameters​

ConfigureInactivityThreshold(ushort, ushort)​

Parameters​

Implements​

Code Example

Usage

Wiring Example

Assembly: Adxl3xx.dll

Properties

Acceleration3D

Temperature

DefaultSpiBusSpeed

SpiBusSpeed

DefaultSpiBusMode

SpiBusMode

DataReady

FIFOReady

FIFOWatermark

FIFOOverrun

ActivityDetected

InactivityDetected

IsAwake

DeviceID

Status

ActivityInactivityControl

SelfTest

FilterControl

Methods

RaiseEventsAndNotify(IChangeResult<(Acceleration3D? Acceleration3D, Temperature? Temperature)>)

Parameters

Reset()

Start()

Stop()

Read()

Returns

Parameters

StopUpdating()

ReadSensor()

Returns

Parameters

ConfigureInactivityThreshold(ushort, ushort)

Parameters

Implements