MMA7455 Class Reference

API for MMA7455 chip (accelerometer) More...

Detailed Description

• ID: mma7455
• Name: MMA7455 Accelerometer Sensor
• Category: accelerometer
• Manufacturer: generic
• Connection: i2c

This file defines the MMA7455 interface for libmma7455

    sensor = new upm::MMA7455(0, ADDR);
    
    short x, y, z;
    while (!doWork) {
        sensor->readData(&x, &y, &z);
        std::cout << "Accelerometer X(" << x << ") Y(" << y << ") Z(" << z << ")" << std::endl;
        usleep (100000);
    }

Public Member Functions
	MMA7455 (int bus=0, int devAddr=0x1D)
	~MMA7455 ()
std::string	name ()
mraa_result_t	calibrate ()
mraa_result_t	readData (short *ptrX, short *ptrY, short *ptrZ)
int	ic2ReadReg (unsigned char reg, unsigned char *buf, unsigned char size)
mraa_result_t	ic2WriteReg (unsigned char reg, unsigned char *buf, unsigned char size)

Constructor & Destructor Documentation

MMA7455	(	int	bus = 0,
		int	devAddr = 0x1D
	)

Instanciates a MMA7455 object

Parameters

bus	number of used bus
devAddr	addres of used i2c device

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~MMA7455

(

)

MMA7455 object destructor, basicaly it close i2c connection.

Member Function Documentation

std::string name ( )

inline

Return name of the component

mraa_result_t calibrate

(

void

)

Calibrate the sensor

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mraa_result_t readData	(	short *	ptrX,
		short *	ptrY,
		short *	ptrZ
	)

Read X, Y and Z acceleration data

Parameters

ptrX	X axis
ptrY	Y axis
ptrZ	Z axis

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int ic2ReadReg	(	unsigned char	reg,
		unsigned char *	buf,
		unsigned char	size
	)

Parameters

reg	register address
buf	register data buffer
size	buffer size

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mraa_result_t ic2WriteReg	(	unsigned char	reg,
		unsigned char *	buf,
		unsigned char	size
	)

Parameters

reg	register address
buf	register data buffer
size	buffer size

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

• /var/lib/jenkins/workspace/upm-doc-stable/src/mma7455/mma7455.h
• /var/lib/jenkins/workspace/upm-doc-stable/src/mma7455/mma7455.cxx