99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
#include <time.h>
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extern volatile TimeSystem _internal_time;
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extern uint32 _internal_frequency_hz;
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// Length of months (summed)
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const int16 MonthLen[] = {0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 };
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TimeSystem TimeConvertToTimeSystem (Time t)
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{
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TimeSystem sys = {0,0};
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t.Year--; t.Month--; t.Day--; t.WeekDay--;
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sys.Time = (uint32)(t.Hour * 3600000) + (uint32)(t.Minute * 60000) + (uint32)(t.Second * 1000) + (uint32)t.Milisecond;
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if (t.Year < 0) return sys;
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sys.Date = (uint32)(t.Day) + (uint32)(MonthLen[t.Month])
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+ (uint32)((t.Year/4) * (365*4 + 1)) + (uint32)(t.Year%4 * 365);
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return sys;
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}
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Time TimeConvertToTime (TimeSystem InternalTime)
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{
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Time t;
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t.Milisecond = InternalTime.Time % 1000;
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t.Second = (InternalTime.Time / 1000) % 60;
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t.Minute = (InternalTime.Time / 60000) % 60;
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t.Hour = (InternalTime.Time / 3600000);
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uint32 DayOfYear = (InternalTime.Date % 1461) % 365;
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t.Year = (InternalTime.Date / 1461)*4 + (InternalTime.Date % 1461)/365 + 1;
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t.Month = 11;
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while ((int32)DayOfYear < (MonthLen[t.Month] + (t.Year % 4 == 0 && t.Month>1))) t.Month--;
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t.WeekDay = InternalTime.Date % 7;
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t.Day = DayOfYear - MonthLen[t.Month] - (t.Year % 4 == 0 && t.Month>1);
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t.Month++; t.WeekDay++; t.Day++;
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return t;
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}
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uint16 TimeCalculateWeekday (Time t)
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{
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t.Year--;
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uint32 d = (uint32)(t.Day-1) + (uint32)(MonthLen[t.Month-1]) +
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+ (uint32)((t.Year/4) * (365*4 + 1)) + (uint32)(t.Year%4 * 365);
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return 1 + (d%7);
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}
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TimeSystem TimeGetInternalTime()
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{
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return _internal_time;
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}
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void TimeSetInternalTime(TimeSystem t)
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{
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_internal_time = t;
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}
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uint32 TimeGetInternalFrequency ()
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{
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return _internal_frequency_hz;
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}
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void TimeSetInternalFrequency (uint32 f)
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{
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_internal_frequency_hz = f;
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}
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TimeSystem _timer;
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#define MILISECONDS_IN_DAY 86400000
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void TimerStart (uint32 ms)
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{
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_timer = TimeGetInternalTime();
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_timer.Time += ms;
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if (_timer.Time >= MILISECONDS_IN_DAY)
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{
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_timer.Date++;
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_timer.Time-=MILISECONDS_IN_DAY;
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}
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}
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uint8 TimerIsDone ()
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{
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TimeSystem now = TimeGetInternalTime();
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if (_timer.Date >= now.Date && _timer.Time > now.Time) return 0;
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return 1;
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}
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