File content as of revision 6:37d4c4e18227:

/*     
*   Copyright (c) 2015, Baser Kandehir, baser.kandehir@ieee.metu.edu.tr
*
*   Permission is hereby granted, free of charge, to any person obtaining a copy
*   of this software and associated documentation files (the "Software"), to deal
*   in the Software without restriction, including without limitation the rights
*   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
*   copies of the Software, and to permit persons to whom the Software is
*   furnished to do so, subject to the following conditions:
*
*   The above copyright notice and this permission notice shall be included in
*   all copies or substantial portions of the Software.
*
*   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
*   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
*   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
*   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
*   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
*   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
*   THE SOFTWARE.
*
*/

// Some part of the code is adapted from Adafruit HMC5883 library

#ifndef QMC5883L_H
#define QMC5883L_H

#include "mbed.h"
#include "math.h"

#define PI 3.14159265359 
#define GAUSS_TO_MICROTESLA 100
#define QMC5883L_ADDRESS 0x1A//0x18//

/* Register Definitions */
#define OUT_X_LSB    0x00
#define OUT_X_MSB    0x01
#define OUT_Y_LSB    0x02
#define OUT_Y_MSB    0x03
#define OUT_Z_LSB    0x04
#define OUT_Z_MSB    0x05
#define STATUS       0x06
#define TEMP_LSB     0x07
#define TEMP_MSB     0x08
#define CONTROL_A    0x09
#define CONTROL_B    0x0A
#define SET_RESET    0x0B
#define CHIP_ID      0x0D

/* Magnetometer Gain Settings */
enum TypeMagScale
{
    MagScale_2G =  0,      // +/- 2 Ga
    MagScale_8G  = 1,     // +/- 8 Ga
};

enum TypeState
{
    Standby_MODE = 0,
    Continuous_MODE = 1
};

enum TypeODR
{
    F10 = 0,
    F50 = 1,
    F100 = 2,
    F200 = 3
};

class QMC5883L
{
    public:
        QMC5883L(PinName sda, PinName scl);
        void    init();
        double  getHeading();
        void    readMagData(float* dest);  
        int16_t getMagXvalue();
        int16_t getMagYvalue();
        int16_t getMagZvalue();
        int16_t getMagTemp();
        void    ChipID();
        void standby();
        void soft_reset();
    private:
        TypeState state;
        TypeODR odr;
        TypeMagScale mag_scale;
        float setMagRange(TypeMagScale Mscale);
        void change_odr_state(TypeMagScale mmag_scale, TypeODR modr, TypeState mstate);
        uint8_t QMC5883L_ReadByte(uint8_t QMC5883L_reg);
        void QMC5883L_WriteByte(uint8_t QMC5883L_reg, uint8_t QMC5883L_data);
        I2C QMC5883L_i2c;
};

#endif