Arduino library for Freescale accelerometer MMA7455

• init object
  MMA7455();

• start object
  For non Arduino boards
  void begin(uint8_t pin_sda, uint8_t pin_scl);

For Arduino boards
void begin();

• read x-, y-, z- acceleration
  int xyz(uint16_t *pX, uint16_t *pY, uint16_t *pZ);

• read 2 byte from sensor register (see MMA7455.h)
  int read(int start, uint8_t *buffer, int size);

• write 2 byte to sensor register
  int write(int start, const uint8_t *pData, int size);