/* * ctime.h * * Created on: May 19, 2016 * Author: root */ #ifndef CTIME_H_ #define CTIME_H_ #include "common/micro_type.h" #define OFFSET_SECOND 946 ...
/* * ctime.h * * Created on: May 19, 2016 * Author: root */ #ifndef CTIME_H_ #define CTIME_H_ #include "common/micro_type.h" #define OFFSET_SECOND 946684800 /* ��1970/1/1/0/0/0��2000/1/1/0/0/0֮��������� */ //#define OFFSET_SECOND 0 /* ��2000/1/1/0/0/0��2000/1/1/0/0/0֮��������� */ #define SECOND_OF_DAY 86400 /* 1������� */ typedef struct date_time { uint16 iYear; uint16 iMon; uint16 iDay; uint16 iHour; uint16 iMin; uint16 iSec; uint16 iMsec; } DATE_TIME; void GetDateTimeFromSecond(unsigned long lSec, DATE_TIME *tTime); #endif /* CTIME_H_ */
/* * ctime.c * * Created on: May 19, 2016 * Author: root */ #include "common/micro_type.h" #include "ctime.h" uint8 DayOfMon[12] = {31,28,31,30,31,30,31,31,30,31,30,31}; /* ������1970/1/1/0/0/0�����ʱ */ unsigned long GetSecondTime(DATE_TIME *date_time) { uint16 iYear, iMon, iDay, iHour, iMin, iSec; iYear = date_time->iYear; iMon = date_time->iMon; iDay = date_time->iDay; iHour = date_time->iHour; iMin = date_time->iMin; iSec = date_time->iSec; uint16 i, Cyear=0; unsigned long CountDay=0; for(i=1970; i<iYear; i++) /* ͳ��1970�굽����֮ǰ�������� */ { if(((i%4==0) && (i%100!=0)) || (i%400==0)) Cyear++; } CountDay = Cyear * 366 + (iYear-1970-Cyear) * 365; for(i=1; i<iMon; i++) { if((i==2) && (((iYear%4==0)&&(iYear%100!=0)) || (iYear%400==0))) CountDay += 29; else CountDay += DayOfMon[i-1]; } CountDay += (iDay-1); CountDay = CountDay*SECOND_OF_DAY + (unsigned long)iHour*3600 + (unsigned long)iMin*60 + iSec; return CountDay; } /* ����ʱ�������1970/1/1/0/0������ */ void GetDateTimeFromSecond(unsigned long lSec, DATE_TIME *tTime) { uint16 i,j,iDay; unsigned long lDay; lDay = lSec / SECOND_OF_DAY; /* תΪ�������ʱ�� */ lSec = lSec % SECOND_OF_DAY; i = 1970; while(lDay > 365) { if(((i%4==0)&&(i%100!=0)) || (i%400==0)) /* ���� */ lDay -= 366; else lDay -= 365; i++; } if((lDay == 365) && !(((i%4==0)&&(i%100!=0)) || (i%400==0))) /* ƽ�� */ { lDay -= 365; i++; } tTime->iYear = i; /* �õ���� */ for(j=0;j<12;j++) /* �����·� */ { if((j==1) && (((i%4==0)&&(i%100!=0)) || (i%400==0))) iDay = 29; else iDay = DayOfMon[j]; if(lDay >= iDay) lDay -= iDay; else break; } tTime->iMon = j+1; tTime->iDay = lDay+1; tTime->iHour = ((lSec / 3600)+8)%24;//這裡註意，世界時間已經加上北京時間差8， tTime->iMin = (lSec % 3600) / 60; tTime->iSec = (lSec % 3600) % 60; }
