watch
Dependents: Xadow_Watch_OLED Seeed_Arch_GPRS_V2_Humidty_Alert
Diff: DS1337.h
- Revision:
- 0:f4f9b627adf9
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DS1337.h Tue Apr 01 07:01:08 2014 +0000 @@ -0,0 +1,136 @@ +/* + DS1337.h - library for DS1337 rtc +*/ + +// ensure this library description is only included once +#ifndef DS1337_h +#define DS1337_h + +// include types & constants of Wiring core API +#include "mbed.h" + +typedef int8_t byte; + +// indices within the rtc_bcd[] buffer +#define DS1337_SEC 0 +#define DS1337_MIN 1 +#define DS1337_HR 2 +#define DS1337_DOW 3 +#define DS1337_DATE 4 +#define DS1337_MTH 5 +#define DS1337_YR 6 + +#define DS1337_BASE_YR 2000 + +#define DS1337_CTRL_ID 0xD0 + + + +// Define register bit masks +#define DS1337_CLOCKHALT (1<<7) + +#define DS1337_LO_BCD 0xf +#define DS1337_HI_BCD 0xf0 + +#define DS1337_HI_SEC 0x70 +#define DS1337_HI_MIN 0x70 +#define DS1337_HI_HR 0x30 +#define DS1337_LO_DOW 0x07 +#define DS1337_HI_DATE 0x30 +#define DS1337_HI_MTH 0x30 +#define DS1337_HI_YR 0xf0 + +#define DS1337_ARLM1 0x07 +#define DS1337_ARLM1_LO_SEC 0xf +#define DS1337_ARLM1_HI_SEC 0x70 +#define DS1337_ARLM1_LO_MIN 0x70 +#define DS1337_ARLM1_HI_MIN 0xf + +#define DS1337_SP 0x0E +#define DS1337_SP_EOSC (1<<7) +#define DS1337_SP_RS2 (1<<4) +#define DS1337_SP_RS1 (1<<3) +#define DS1337_SP_INTCN (1<<2) +#define DS1337_SP_A2IE (1<<1) +#define DS1337_SP_A1IE (1<<0) + +#define DS1337_STATUS 0x0F +#define DS1337_STATUS_OSF (1<<7) +#define DS1337_STATUS_A2F (1<<1) +#define DS1337_STATUS_A1F (1<<0) + +/* Definitions for alarm repeat */ +/* The private variable alarm_repeat holds the user's alarm repeat preference. However, the DS1337 encodes these in the topmost bit(s) of the 4 alarm registers. */ +/* Splattering these bits across the alarm regs is handled in the writeAlarm() function. */ +/* If DY/DT is set, the day field is interpreted as a DayOfWeek (1 ~ 7), else it is interpreted as a DayOfMonth.*/ + +/* user alarm_repeat bit mask: + 7 6 5 4 3 2 1 0 + [x x x A1M4 DY/DT A1M3 A1M2 A1M1] +*/ + +#define EVERY_SECOND B00010111 +#define EVERY_MINUTE B00010110 +#define EVERY_HOUR B00010100 +#define EVERY_DAY B00010000 +#define EVERY_WEEK B00001000 +#define EVERY_MONTH B00000000 + + +/* typedef struct { + unsigned int year; + unsigned char month; + unsigned char day; + unsigned char dayOfWeek; + unsigned char hour; + unsigned char minute; + unsigned char second; +} TIME; */ + + +// library interface description +class DS1337 { + // user-accessible "public" interface +public: + + void readTime(void); + unsigned char getSeconds(); + unsigned char getMinutes(); + unsigned char getHours(); + unsigned char getDays(); + unsigned char getDayOfWeek(); + unsigned char getMonths(); + unsigned int getYears(); + + void setSeconds(unsigned char); + void setMinutes(unsigned char); + void setHours(unsigned char); + void setDays(unsigned char); + void setDayOfWeek(unsigned char); + void setMonths(unsigned char); + void setYears(unsigned int); + + void setTime(); + + + void start(void); + void stop(void); + unsigned char getRegister(unsigned char registerNumber); + void setRegister(unsigned char registerNumber, unsigned char registerValue); + //void unsetRegister(unsigned char registerNumber, unsigned char registerMask); + + // library-accessible "private" interface +private: + + byte time_set; + byte alarm_repeat; + byte rtc_bcd[7]; // used prior to read/set DS1337 registers; + void read(void); + void save(void); + byte bcd2bin(byte); + byte bin2bcd(byte); +}; + +//extern DS1337 RTC; + +#endif