Realtime clock library for DS1307 and DS3231m
Dependents: vfd_modular_clock_mbed
ds3231m.h
- Committer:
- Backstrom
- Date:
- 2015-02-11
- Revision:
- 1:3fe5649f1e02
- Parent:
- 0:1602fdac44ec
File content as of revision 1:3fe5649f1e02:
/* * RTC library - mbed * (C) 2011-15 Akafugu Corporation * * This program is free software; you can redistribute it and/or modify it under the * terms of the GNU General Public License as published by the Free Software * Foundation; either version 2 of the License, or (at your option) any later * version. * * This program is distributed in the hope that it will be useful, but WITHOUT ANY * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A * PARTICULAR PURPOSE. See the GNU General Public License for more details. * */ #ifndef __DS3231M_H_ #define __DS3231M_H_ #include "rtc.h" // leap year calulator expects year argument as years offset from 1970 #define LEAP_YEAR(Y) ( ((1970+Y)>0) && !((1970+Y)%4) && ( ((1970+Y)%100) || !((1970+Y)%400) ) ) /* Useful Constants */ #define SECS_PER_MIN (60UL) #define SECS_PER_HOUR (3600UL) #define SECS_PER_DAY (SECS_PER_HOUR * 24UL) #define DAYS_PER_WEEK (7UL) #define SECS_PER_WEEK (SECS_PER_DAY * DAYS_PER_WEEK) #define SECS_PER_YEAR (SECS_PER_WEEK * 52UL) #define SECS_YR_2000 (946684800UL) // the time at the start of y2k class DS3231M : public RTC { public: DS3231M(I2C& i2c); virtual void begin(); virtual time_t time(); virtual struct tm* getTime(); virtual void getTime(uint8_t* hour, uint8_t* min, uint8_t* sec); virtual void setTime(time_t t); virtual void setTime(struct tm* tm); virtual void setTime(uint8_t hour, uint8_t min, uint8_t sec); virtual void setAlarm(time_t t); virtual void setAlarm(uint8_t hour, uint8_t min, uint8_t sec); virtual struct tm* getAlarm(void); virtual void getAlarm(uint8_t* hour, uint8_t* min, uint8_t* sec); virtual bool checkAlarm(void); virtual void SQWEnable(bool enable); virtual void SQWSetFreq(enum RTC_SQW_FREQ freq); virtual void Osc32kHzEnable(bool enable); // Temperature void getTemp(int8_t* i, uint8_t* f); void forceTempConversion(uint8_t block); private: I2C& m_i2c; bool m_is_ds1307; bool m_is_ds3231; uint8_t read_byte(uint8_t offset); void write_byte(uint8_t b, uint8_t offset); void write_addr(uint8_t addr); }; #endif // __DS3231M_H_