136 lines
4.3 KiB
C++
136 lines
4.3 KiB
C++
// Code by JeeLabs http://news.jeelabs.org/code/
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// Released to the public domain! Enjoy!
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#ifndef _RTCLIB_H_
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#define _RTCLIB_H_
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#include <Arduino.h>
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class TimeSpan;
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#define PCF8523_ADDRESS 0x68
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#define PCF8523_CLKOUTCONTROL 0x0F
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#define PCF8523_CONTROL_3 0x02
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#define DS1307_ADDRESS 0x68
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#define DS1307_CONTROL 0x07
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#define DS1307_NVRAM 0x08
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#define DS3231_ADDRESS 0x68
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#define DS3231_CONTROL 0x0E
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#define DS3231_STATUSREG 0x0F
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#define SECONDS_PER_DAY 86400L
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#define SECONDS_FROM_1970_TO_2000 946684800
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// Simple general-purpose date/time class (no TZ / DST / leap second handling!)
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class DateTime {
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public:
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DateTime (uint32_t t = 0);
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DateTime (uint16_t year, uint8_t month, uint8_t day,
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uint8_t hour = 0, uint8_t min = 0, uint8_t sec = 0);
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DateTime (const DateTime& copy);
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DateTime (const char* date, const char* time);
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DateTime (const __FlashStringHelper* date, const __FlashStringHelper* time);
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uint16_t year() const { return 2000 + yOff; }
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uint8_t month() const { return m; }
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uint8_t day() const { return d; }
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uint8_t hour() const { return hh; }
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uint8_t minute() const { return mm; }
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uint8_t second() const { return ss; }
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uint8_t dayOfTheWeek() const;
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// 32-bit times as seconds since 1/1/2000
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long secondstime() const;
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// 32-bit times as seconds since 1/1/1970
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uint32_t unixtime(void) const;
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DateTime operator+(const TimeSpan& span);
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DateTime operator-(const TimeSpan& span);
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TimeSpan operator-(const DateTime& right);
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protected:
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uint8_t yOff, m, d, hh, mm, ss;
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};
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// Timespan which can represent changes in time with seconds accuracy.
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class TimeSpan {
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public:
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TimeSpan (int32_t seconds = 0);
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TimeSpan (int16_t days, int8_t hours, int8_t minutes, int8_t seconds);
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TimeSpan (const TimeSpan& copy);
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int16_t days() const { return _seconds / 86400L; }
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int8_t hours() const { return _seconds / 3600 % 24; }
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int8_t minutes() const { return _seconds / 60 % 60; }
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int8_t seconds() const { return _seconds % 60; }
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int32_t totalseconds() const { return _seconds; }
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TimeSpan operator+(const TimeSpan& right);
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TimeSpan operator-(const TimeSpan& right);
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protected:
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int32_t _seconds;
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};
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// RTC based on the DS1307 chip connected via I2C and the Wire library
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enum Ds1307SqwPinMode { OFF = 0x00, ON = 0x80, SquareWave1HZ = 0x10, SquareWave4kHz = 0x11, SquareWave8kHz = 0x12, SquareWave32kHz = 0x13 };
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class RTC_DS1307 {
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public:
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boolean begin(void);
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static void adjust(const DateTime& dt);
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uint8_t isrunning(void);
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static DateTime now();
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static Ds1307SqwPinMode readSqwPinMode();
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static void writeSqwPinMode(Ds1307SqwPinMode mode);
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uint8_t readnvram(uint8_t address);
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void readnvram(uint8_t* buf, uint8_t size, uint8_t address);
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void writenvram(uint8_t address, uint8_t data);
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void writenvram(uint8_t address, uint8_t* buf, uint8_t size);
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};
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// RTC based on the DS3231 chip connected via I2C and the Wire library
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enum Ds3231SqwPinMode { DS3231_OFF = 0x01, DS3231_SquareWave1Hz = 0x00, DS3231_SquareWave1kHz = 0x08, DS3231_SquareWave4kHz = 0x10, DS3231_SquareWave8kHz = 0x18 };
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class RTC_DS3231 {
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public:
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boolean begin(void);
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static void adjust(const DateTime& dt);
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bool lostPower(void);
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static DateTime now();
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static Ds3231SqwPinMode readSqwPinMode();
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static void writeSqwPinMode(Ds3231SqwPinMode mode);
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};
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// RTC based on the PCF8523 chip connected via I2C and the Wire library
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enum Pcf8523SqwPinMode { PCF8523_OFF = 7, PCF8523_SquareWave1HZ = 6, PCF8523_SquareWave32HZ = 5, PCF8523_SquareWave1kHz = 4, PCF8523_SquareWave4kHz = 3, PCF8523_SquareWave8kHz = 2, PCF8523_SquareWave16kHz = 1, PCF8523_SquareWave32kHz = 0 };
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class RTC_PCF8523 {
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public:
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boolean begin(void);
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void adjust(const DateTime& dt);
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boolean initialized(void);
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static DateTime now();
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Pcf8523SqwPinMode readSqwPinMode();
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void writeSqwPinMode(Pcf8523SqwPinMode mode);
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};
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// RTC using the internal millis() clock, has to be initialized before use
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// NOTE: this clock won't be correct once the millis() timer rolls over (>49d?)
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class RTC_Millis {
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public:
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static void begin(const DateTime& dt) { adjust(dt); }
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static void adjust(const DateTime& dt);
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static DateTime now();
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protected:
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static long offset;
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};
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#endif // _RTCLIB_H_
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