Remarks

ADXL337
Status
Source code	GitHub
NuGet package

The ADXL377 is a low power accelerometer capable of measuring +/- 200g of acceleration along three axes. The ADXL377 is controlled via I2C.

Code Example

public class MeadowApp : App<F7Micro, MeadowApp>
{
    Adxl377 sensor;

    public MeadowApp()
    {
        sensor = new Adxl377(Device, Device.Pins.A01, Device.Pins.A02, Device.Pins.A03, 500);

        sensor.AccelerationChanged += Sensor_AccelerationChanged;
    }

    void Sensor_AccelerationChanged(object sender, Meadow.Foundation.Sensors.SensorVectorEventArgs e)
    {
        Console.WriteLine($"X: {e.CurrentValue.X}, Y: {e.CurrentValue.Y}, Z: {e.CurrentValue.Z}");
    }
}

Sample projects available on GitHub

Wiring Example

Characteristic	Locus
Inheritance	System.Object > Adxl377
Implements	IAccelerometer
Namespace	Meadow.Foundation.Sensors.Motion
Assembly	Adxl377.dll

Syntax

public class Adxl377 : FilterableObservableBase<AccelerationConditionChangeResult, AccelerationConditions>, IAccelerometer

Constructors

Adxl377(IIODevice, IPin, IPin, IPin)

Create a new ADXL337 sensor object.

Declaration

public Adxl377(IIODevice device, IPin xPin, IPin yPin, IPin zPin)

Parameters

Type	Name	Description
IIODevice	device
IPin	xPin	Analog pin connected to the X axis output from the ADXL335 sensor.
IPin	yPin	Analog pin connected to the Y axis output from the ADXL335 sensor.
IPin	zPin	Analog pin connected to the Z axis output from the ADXL335 sensor.

Fields

MinimumPollingPeriod

Minimum value that can be used for the update interval when the sensor is being configured to generate interrupts.

Declaration

public const ushort MinimumPollingPeriod = 100

Field Value

Type	Description
System.UInt16

Properties

AccelerationY

Acceleration along the Y-axis.

Declaration

public float AccelerationY { get; }

Property Value

Type	Description
System.Single

Remarks

This property will only contain valid data after a call to Read or after an interrupt has been generated.

AccelerationZ

Acceleration along the Z-axis.

Declaration

public float AccelerationZ { get; }

Property Value

Type	Description
System.Single

Remarks

This property will only contain valid data after a call to Read or after an interrupt has been generated.

AccellerationX

Acceleration along the X-axis.

Declaration

public float AccellerationX { get; }

Property Value

Type	Description
System.Single

Remarks

This property will only contain valid data after a call to Read or after an interrupt has been generated.

Conditions

Declaration

public AccelerationConditions Conditions { get; protected set; }

Property Value

Type	Description
AccelerationConditions

IsSampling

Gets a value indicating whether the analog input port is currently sampling the ADC. Call StartSampling() to spin up the sampling process.

Declaration

public bool IsSampling { get; protected set; }

Property Value

Type	Description
System.Boolean	true if sampling; otherwise, false.

SupplyVoltage

Power supply voltage applied to the sensor. This will be set (in the constructor) to 3.3V by default.

Declaration

public float SupplyVoltage { get; set; }

Property Value

Type	Description
System.Single

XVoltsPerG

Volts per G for the X axis.

Declaration

public float XVoltsPerG { get; set; }

Property Value

Type	Description
System.Single

YVoltsPerG

Volts per G for the X axis.

Declaration

public float YVoltsPerG { get; set; }

Property Value

Type	Description
System.Single

ZVoltsPerG

Volts per G for the X axis.

Declaration

public float ZVoltsPerG { get; set; }

Property Value

Type	Description
System.Single

Methods

GetRawSensorData()

Get the raw analog input values from the sensor.

Declaration

public Task<Vector> GetRawSensorData()

Returns

Type	Description
System.Threading.Tasks.Task<Vector>	Vector object containing the raw sensor data from the analog pins.

RaiseChangedAndNotify(AccelerationConditionChangeResult)

Declaration

protected void RaiseChangedAndNotify(AccelerationConditionChangeResult changeResult)

Parameters

Type	Name	Description
AccelerationConditionChangeResult	changeResult

Read()

Declaration

public Task<AccelerationConditions> Read()

Returns

Type	Description
System.Threading.Tasks.Task<AccelerationConditions>

StartUpdating(Int32)

Declaration

public void StartUpdating(int standbyDuration = 1000)

Parameters

Type	Name	Description
System.Int32	standbyDuration

StopUpdating()

Declaration

public void StopUpdating()

Update()

Read the sensor output and convert the sensor readings into acceleration values.

Declaration

public Task Update()

Returns

Type	Description
System.Threading.Tasks.Task

Events

Updated

Declaration

public event EventHandler<AccelerationConditionChangeResult> Updated

Event Type

Type	Description
System.EventHandler<AccelerationConditionChangeResult>