/elec/propeller-clock

/*

  DS1307.h - library for DS1307 rtc

*/

// ensure this library description is only included once

#ifndef DS1307_h

#define DS1307_h

// include types & constants of core API

#include <Arduino.h>

// include types & constants of Wire ic2 lib

#include <Wire.h>

#define DS1307_SEC 0

#define DS1307_MIN 1

#define DS1307_HR 2

#define DS1307_DOW 3

#define DS1307_DAY 4

#define DS1307_MTH 5

#define DS1307_YR 6

#define DS1307_BASE_YR 2000

#define DS1307_CTRL_ID B1101000  //DS1307

 // Define register bit masks

#define DS1307_CLOCKHALT B10000000

#define DS1307_LO_BCD B00001111

#define DS1307_HI_BCD B11110000

#define DS1307_HI_SEC B01110000

#define DS1307_HI_MIN B01110000

#define DS1307_HI_HR  B00110000

#define DS1307_LO_DOW B00000111

#define DS1307_HI_DAY B00110000

#define DS1307_HI_MTH B00110000

#define DS1307_HI_YR  B11110000

// library interface description

class DS1307

{

public:

    DS1307();

    void get(int *, boolean);

    int get(int, boolean);

	void set(int, int);

    void start(void);

    void stop(void);

private:

    // used prior to read/set ds1307 registers;

    byte rtc_bcd[7];

	void read(void);

	void save(void);

};

extern DS1307 RTC;

#endif