File content as of revision 26:cf049c998b53:

// Library for our MMA8452Q 3-axis accelerometer
// Based on the MMA8452Q Arduino Library by Jim Lindblom (SparkFun Electronics)

#ifndef MMA8452Q_H
#define MMA8452Q_H

#include "mbed.h"


// Register definitions
#define REG_STATUS          0x00
#define OUT_X_MSB           0x01
#define OUT_X_LSB           0x02
#define OUT_Y_MSB           0x03
#define OUT_Y_LSB           0x04
#define OUT_Z_MSB           0x05
#define OUT_Z_LSB           0x06
#define REG_WHO_AM_I        0x0D
#define REG_XYZ_DATA_CFG    0x0E
#define REG_CTRL_REG1       0x2A
#define REG_CTRL_REG4       0x2D
#define REG_CTRL_REG5       0x2E
#define REG_TRANSIENT_CFG   0x1D
#define REG_TRANSIENT_SRC   0x1E
#define REG_TRANSIENT_THS   0x1F
#define REG_TRANSIENT_COUNT 0x20
#define INTERRUPT_PIN       p17

// WHO_AM_I check
#define FACTORY_ID          0x2A

// Scale definitions
#define SCALE_2G            2
#define SCALE_4G            4
#define SCALE_8G            8

// Data rates
#define ODR_800HZ           0
#define ODR_400HZ           1
#define ODR_200HZ           2
#define ODR_100HZ           3
#define ODR_50HZ            4
#define ODR_12_5HZ          5
#define ODR_6_25HZ          6
#define ODR_1_56HZ          7

// Init values
#define DEFAULT_FSR         SCALE_2G
#define DEFAULT_ODR         ODR_800HZ


// Class declaration
class MMA8452Q
{
    public:
        MMA8452Q(PinName sda, PinName scl, int addr);
        ~MMA8452Q();
        bool init();
        uint8_t available();
        void setScale(uint8_t fsr);
        void setODR(uint8_t odr);
        void standby();
        void active();
        float readX();
        float readY();
        float readZ();
        uint8_t readRegister(uint8_t reg);
        void writeRegister(uint8_t reg, uint8_t data);
        void setInterrupt();

    private:
        I2C m_i2c;
        int m_addr;
        int scale;
};

#endif