OTC.h

00001 
00002 /* The callback function when motion happen
00003    
00004  */
00005 typedef  void (*OTSCallback)(int16_t value);
00006 
00007 // Helper macro
00008 #define BIT_CLEAR(REG,MASK)         (REG &= ~MASK)
00009 #define BIT_SET(REG,MASK)           (REG |=  MASK)
00010 #define IS_BIT_CLEAR(REG,MASK)      ((REG & MASK)==0x00)
00011 #define IS_BIT_SET(REG,MASK)        ((REG & MASK)==MASK)
00012 
00013 class Pixart_OTS
00014 {
00015     private:
00016        Ticker  m_ticker;
00017        I2C     *m_i2c;
00018        //Serial  *m_pc;
00019        int m_Period;
00020        uint8_t m_Address;
00021        bool m_WriteEnable;
00022        
00023        OTSCallback m_OTSCallback;       
00024        void periodicCallback(void);       
00025        bool PMT9123_init();
00026        void PMT9123_ReadMotion();
00027        
00028        // Internal read and write function that is only single transaction
00029        void writeRegister(uint8_t addr, uint8_t data);
00030        uint8_t readRegister(uint8_t addr);       
00031        
00032     public:           
00033        /* 
00034         * The initial function for Gesture class 
00035         * i2c ==> The I2C object from outside, the clock rate should be 400k
00036         * Period ==> The polling rate for gesture, in ms
00037         * callback ==> The call back function for gesture status
00038         * Result ==> The result for initialize
00039         */
00040        Pixart_OTS(I2C *i2c, int Period,OTSCallback callback,bool &Result);                                             
00041        
00042        // Public register read and write function, which include steps to ensure successful write and read
00043        uint8_t Register_Write(uint8_t addr, uint8_t data);
00044        uint8_t Register_Read(uint8_t addr);
00045 };