ADXL335 Class Reference

API for the ADXL335 3-Axis Analog Accelerometer. More...

Detailed Description

• ID: adxl335
• Name: Low-power, 3-axis +/- 3 g Accelerometer
• Other Names: Grove 3-Axis Analog Accelerometer
• Category: accelerometer
• Manufacturer: seeed
• Connection: analog
• Link: http://www.analog.com/en/products/mems/accelerometers/adxl335.html

UPM module for the ADXL335 3-axis analog accelerometer. This was tested on a Grove 3-axis Analog Accelerometer. It uses 3 analog pins, one for each axis: X, Y, and Z.

    // Instantiate an ADXL335 accelerometer on analog pins A0, A1, and A2
    upm::ADXL335 accel(0, 1, 2);

    cout << "Please make sure the sensor is completely still. Sleeping for"
         << " 2 seconds." << endl;
    upm_delay(2);
    cout << "Calibrating..." << endl;

    accel.calibrate();

    while (shouldRun) {
        int x, y, z;
        float aX, aY, aZ;

        accel.values(&x, &y, &z);
        cout << "Raw Values: X: " << x << " Y: " << y << " Z: " << z << endl;

        accel.acceleration(&aX, &aY, &aZ);
        cout << "Acceleration: X: " << aX << "g" << endl;
        cout << "Acceleration: Y: " << aY << "g" << endl;
        cout << "Acceleration: Z: " << aZ << "g" << endl;
        cout << endl;

        upm_delay_us(200000);
    }

Public Member Functions
	ADXL335 (int pinX, int pinY, int pinZ, float aref=ADXL335_DEFAULT_AREF)
	~ADXL335 ()
void	setZeroX (float zeroX)
void	setZeroY (float zeroY)
void	setZeroZ (float zeroZ)
void	values (int *xVal, int *yVal, int *zVal)
std::vector< int >	values ()
void	acceleration (float *xAccel, float *yAccel, float *zAccel)
std::vector< float >	acceleration ()
void	calibrate ()

Constructor & Destructor Documentation

ADXL335	(	int	pinX,
		int	pinY,
		int	pinZ,
		float	aref = ADXL335_DEFAULT_AREF
	)

ADXL335 constructor

Parameters

pinX	Analog pin to use for X-axis
pinY	Analog pin to use for Y-axis
pinZ	Analog pin to use for Z-axis
aref	Analog reference voltage; default is 5.0v

~ADXL335

(

)

ADXL335 destructor

Member Function Documentation

void setZeroX ( float  zeroX )

inline

Sets the "zero" value of the X-axis, determined through calibration

Parameters

zeroX

"Zero" value of the X-axis

void setZeroY ( float  zeroY )

inline

Sets the "zero" value of the Y-axis, determined through calibration

Parameters

zeroY

"Zero" value of the Y-axis

void setZeroZ ( float  zeroZ )

inline

Sets the "zero" value of the Z-axis, determined through calibration

Parameters

zeroZ

"Zero" value of the Z-axis

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void values	(	int *	xVal,
		int *	yVal,
		int *	zVal
	)

Gets the analog values for the 3 axes

Parameters

xVal	Pointer to the returned X-axis value
yVal	Pointer to the returned Y-axis value
zVal	Pointer to the returned Z-axis value

std::vector< int > values

(

)

Gets the analog values for the 3 axes

Returns

std::vector of x, y, z analog acceleration values

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void acceleration	(	float *	xAccel,
		float *	yAccel,
		float *	zAccel
	)

Gets the acceleration along all 3 axes

Parameters

xAccel	Pointer to returned X-axis value
yAccel	Pointer to returned Y-axis value
zAccel	Pointer to returned Z-axis value

std::vector< float > acceleration

(

)

Gets the acceleration along all 3 axes

Returns

std::vector of x, y, z acceleration values

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void calibrate

(

)

While the sensor is still, measures the X-axis, Y-axis, and Z-axis values and uses those values as the zero values.

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The documentation for this class was generated from the following files:

• src/adxl335/adxl335.hpp
• src/adxl335/adxl335.cxx