arduino和ds1302的基于lcd12864闹钟，按键可调时间

#include <Arduino.h> #include "RtcDateTime.h" const uint8_t c_daysInMonth[] PROGMEM = { 31,28,31,30,31,30,31,31,30,31,30,31 }; RtcDateTime::RtcDateTime(uint32_t secondsFrom2000) { _initWithSecondsFrom2000<uint32_t>(secondsFrom2000); } bool RtcDateTime::IsValid() const { // this just tests the most basic validity of the value ranges // and valid leap years // It does not check any time zone or daylight savings time if ((_month > 0 && _month < 13) && (_dayOfMonth > 0 && _dayOfMonth < 32) && (_hour < 24) && (_minute < 60) && (_second < 60)) { // days in a month tests // if (_month == 2) { if (_dayOfMonth > 29) { return false; } else if (_dayOfMonth > 28) { // leap day // check year to make sure its a leap year uint16_t year = Year(); if ((year % 4) != 0) { return false; } if ((year % 100) == 0 && (year % 400) != 0) { return false; } } } else if (_dayOfMonth == 31) { if ((((_month - 1) % 7) % 2) == 1) { return false; } } return true; } return false; } uint8_t StringToUint8(const char* pString) { uint8_t value = 0; // skip leading 0 and spaces while ('0' == *pString || *pString == ' ') { pString++; } // calculate number until we hit non-numeral char while ('0' <= *pString && *pString <= '9') { value *= 10; value += *pString - '0'; pString++; } return value; } RtcDateTime::RtcDateTime(const char* date, const char* time) { // sample input: date = "Dec 06 2009", time = "12:34:56" _yearFrom2000 = StringToUint8(date + 9); // Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec switch (date[0]) { case 'J': if ( date[1] == 'a' ) _month = 1; else if ( date[2] == 'n' ) _month = 6; else _month = 7; break; case 'F': _month = 2; break; case 'A': _month = date[1] == 'p' ? 4 : 8; break; case 'M': _month = date[2] == 'r' ? 3 : 5; break; case 'S': _month = 9; break; case 'O': _month = 10; break; case 'N': _month = 11; break; case 'D': _month = 12; break; } _dayOfMonth = StringToUint8(date + 4); _hour = StringToUint8(time); _minute = StringToUint8(time + 3); _second = StringToUint8(time + 6); } template <typename T> T DaysSinceFirstOfYear2000(uint16_t year, uint8_t month, uint8_t dayOfMonth) { T days = dayOfMonth; for (uint8_t indexMonth = 1; indexMonth < month; ++indexMonth) { days += pgm_read_byte(c_daysInMonth + indexMonth - 1); } if (month > 2 && year % 4 == 0) { days++; } return days + 365 * year + (year + 3) / 4 - 1; } template <typename T> T SecondsIn(T days, uint8_t hours, uint8_t minutes, uint8_t seconds) { return ((days * 24L + hours) * 60 + minutes) * 60 + seconds; } uint8_t RtcDateTime::DayOfWeek() const { uint16_t days = DaysSinceFirstOfYear2000<uint16_t>(_yearFrom2000, _month, _dayOfMonth); return (days + 6) % 7; // Jan 1, 2000 is a Saturday, i.e. returns 6 } uint32_t RtcDateTime::TotalSeconds() const { uint16_t days = DaysSinceFirstOfYear2000<uint16_t>(_yearFrom2000, _month, _dayOfMonth); return SecondsIn<uint32_t>(days, _hour, _minute, _second); } uint64_t RtcDateTime::TotalSeconds64() const { uint32_t days = DaysSinceFirstOfYear2000<uint32_t>(_yearFrom2000, _month, _dayOfMonth); return SecondsIn<uint64_t>(days, _hour, _minute, _second); } void RtcDateTime::InitWithIso8601(const char* date) { // sample input: date = "Sat, 06 Dec 2009 12:34:56 GMT" _yearFrom2000 = StringToUint8(date + 13); // Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec switch (date[8]) { case 'J': if (date[1 + 8] == 'a') _month = 1; else if (date[2 + 8] == 'n') _month = 6; else _month = 7; break; case 'F': _month = 2; break; case 'A': _month = date[1 + 8] == 'p' ? 4 : 8; break; case 'M': _month = date[2 + 8] == 'r' ? 3 : 5; break; case 'S': _month = 9; break; case 'O': _month = 10; break; case 'N': _month = 11; break; case 'D': _month = 12; break; } _dayOfMonth = StringToUint8(date + 5); _hour = StringToUint8(date + 17); _minute = StringToUint8(date + 20); _second = StringToUint8(date + 23); }