MMA7660.h

/*
 * MMA7760.h
 * Library for accelerometer_MMA7760
 *
 * Copyright (c) 2013 seeed technology inc.
 * Author        :   FrankieChu
 * Create Time   :   Jan 2013
 * Change Log    :
 *
 * The MIT License (MIT)
 *
 * 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.
 */

#ifndef __MMC7660_H__
#define __MMC7660_H__

#define MMA7660_ADDR  0x4c

#define MMA7660_X     0x00
#define MMA7660_Y     0x01
#define MMA7660_Z     0x02
#define MMA7660_TILT  0x03
#define MMA7660_SRST  0x04
#define MMA7660_SPCNT 0x05
#define MMA7660_INTSU 0x06
  #define MMA7660_SHINTX 0x80
  #define MMA7660_SHINTY 0x40
  #define MMA7660_SHINTZ 0x20
  #define MMA7660_GINT 0x10
  #define MMA7660_ASINT 0x08
  #define MMA7660_PDINT 0x04
  #define MMA7660_PLINT 0x02
  #define MMA7660_FBINT 0x01
#define MMA7660_MODE  0x07
  #define MMA7660_STAND_BY 0x00
  #define MMA7660_ACTIVE   0x01
#define MMA7660_SR    0x08      //sample rate register
  #define AUTO_SLEEP_120  0X00//120 sample per second
  #define AUTO_SLEEP_64   0X01
  #define AUTO_SLEEP_32   0X02
  #define AUTO_SLEEP_16   0X03
  #define AUTO_SLEEP_8    0X04
  #define AUTO_SLEEP_4    0X05
  #define AUTO_SLEEP_2    0X06
  #define AUTO_SLEEP_1    0X07
#define MMA7660_PDET  0x09
#define MMA7660_PD    0x0A

struct MMA7660_DATA {
  uint8_t X;
  uint8_t Y;
  uint8_t Z;
  uint8_t TILT;
  uint8_t SRST;
  uint8_t SPCNT;
  uint8_t INTSU;
  uint8_t MODE;
  uint8_t SR;
  uint8_t PDET;
  uint8_t PD;
};

struct MMA7660_LOOKUP {
  float g;
  float xyAngle;
  float zAngle;
};

struct MMA7660_ACC_DATA {
  MMA7660_LOOKUP x;
  MMA7660_LOOKUP y;
  MMA7660_LOOKUP z;
};

class MMA7660 {
private:
  void write(uint8_t _register, uint8_t _data);
  uint8_t read(uint8_t _register);
  void initAccelTable();

  MMA7660_LOOKUP accLookup[64];

public:
  void init();
  void init(uint8_t interrupts);
  void setMode(uint8_t mode);
  void setSampleRate(uint8_t rate);

  // get the signed value of x,y,z register
  bool getXYZ(int8_t *x,int8_t *y,int8_t *z);

  // calculate the acceleration from the signed value of x,y,z register
  bool getAcceleration(float *ax,float *ay,float *az);

  // lookup the acceleration from the lookup table from this chip's datasheet
  bool getAcceleration(MMA7660_ACC_DATA *data);

  // get all the register value
  bool getAllData(MMA7660_DATA *data);
};

#endif