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timedate.c
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timedate.c
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#include "timedate.h"
static uint16_t isLeapYear(uint16_t year);
static uint8_t dmyInc(sDATE* date, uint8_t s);
static uint8_t dmyDec(sDATE* date, uint8_t s);
void timeSet(sTIME* time, eTIMEDATE mark, int8_t value) {
switch(mark) {
default:
break;
case HOUR:
time->hour = value;
break;
case MIN:
time->min = value;
break;
case SEC:
time->sec = value;
break;
}
}
void timeInit(sTIME* time) {
timeSet(time, HOUR, 0);
timeSet(time, MIN, 0);
timeSet(time, SEC, 0);
}
// for 24 hours
eTIMEDATE timeIncSec(sTIME* time) {
int8_t* ptr = &(time->sec);
(*ptr)++; // sec++
if((*ptr) < 60) {
return SEC;
}
*ptr++ = 0;
(*ptr)++;
if((*ptr) < 60) {
return MIN;
}
*ptr++ = 0;
(*ptr)++;
if((*ptr) < 24) {
return HOUR;
}
*ptr = 0;
return DAY;
}
// return time1>time2
int16_t timeCompare(sTIME* time1, sTIME* time2) {
uint32_t sec1, sec2;
sec1 = (uint32_t)(time1->hour) * 3600 + time1->min * 60 + time1->sec;
sec2 = (uint32_t)(time2->hour) * 3600 + time2->min * 60 + time2->sec;
return sec1 > sec2;
}
static void timezoneTransUtil(sTIME* s_time, sDATE* s_date) {
if(s_time->min < 0) {
s_time->hour -= 1;
s_time->min += 60;
}
if(s_time->hour < 0) {
dateDec(s_date, DAY);
s_time->hour += 24;
}
if(s_time->min >= 60) {
s_time->hour += 1;
s_time->min -= 60;
}
if(s_time->hour >= 24) {
dateInc(s_date, DAY);
s_time->hour -= 24;
}
}
void utc2local(sTIME* utc_time, sDATE* utc_date, sTIME* timezone, sTIME* local_time, sDATE* local_date) {
memcpy(local_time, utc_time, sizeof(sTIME));
memcpy(local_date, utc_date, sizeof(sDATE));
local_time->hour += timezone->hour;
local_time->min += timezone->min;
timezoneTransUtil(local_time, local_date);
}
void local2utc(sTIME* utc_time, sDATE* utc_date, sTIME* timezone, sTIME* local_time, sDATE* local_date) {
memcpy(utc_time, local_time, sizeof(sTIME));
memcpy(utc_date, local_date, sizeof(sDATE));
utc_time->hour -= timezone->hour;
utc_time->min -= timezone->min;
timezoneTransUtil(utc_time, utc_date);
}
void dateFix(sDATE* date) {
uint8_t maxdays;
if((*date).month > 12) {
(*date).month = 12;
}
if((*date).year > 99) {
(*date).year = 99;
}
maxdays = getDaysFormOneMonth((*date).year + 2000, (*date).month);
if((*date).day > maxdays) {
(*date).day = maxdays;
}
}
int16_t getWeekday(int8_t year, int8_t month, int8_t day) {
static const uint8_t monthPassDay[] = {
0, 3, 3, 6, 1, 4, 6, 2, 5, 0, 3, 5
};
register int8_t days;
days = monthPassDay[month - 1] + day + (year) + ((year) >> 2);
if((month <= 2) && ((year & 3) == 0)) {
days += 6;
}
return (days + 6) % 7;
}
uint16_t isLeapYear(uint16_t year) {
return (((year % 100 != 0) && (year % 4 == 0)) || (year % 400 == 0));
}
int16_t getDaysFormOneMonth(int16_t year, int16_t month) {
switch(month) {
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12:
return 31;
case 4:
case 6:
case 9:
case 11:
return 30;
case 2:
if(isLeapYear(year)) {
return 29;
} else {
return 28;
}
default:
break;
}
return 0;
}
void dateInc(sDATE* date, uint8_t s) {
if(s != 0) {
dateInc(date, dmyInc(date, s));
}
}
void dateDec(sDATE* date, uint8_t s) {
if(s != 0) {
dateDec(date, dmyDec(date, s));
}
}
uint8_t dmyInc(sDATE* date, uint8_t s) {
uint8_t _temp;
switch(s) {
case DAY:
_temp = getDaysFormOneMonth(((*date).year < 100) ? ((*date).year + 2000) : ((*date).year), (*date).month);
if((*date).day == _temp) {
(*date).day = 1;
return MONTH;
} else {
(*date).day++;
}
break;
case MONTH:
if((*date).month == 12) {
(*date).month = 1;
return YEAR;
} else {
(*date).month++;
}
break;
case YEAR:
if((*date).year >= 99) {
(*date).year = 0;
} else {
(*date).year++;
}
break;
}
_temp = getDaysFormOneMonth(((*date).year < 100) ? ((*date).year + 2000) : ((*date).year), (*date).month);
if((*date).day > _temp) {
(*date).day = _temp;
}
return 0;
}
uint8_t dmyDec(sDATE* date, uint8_t s) {
uint8_t _temp;
switch(s) {
case DAY:
_temp = getDaysFormOneMonth(((*date).year < 100) ? ((*date).year + 2000) : ((*date).year), (*date).month);
if((*date).day == 1) {
(*date).day = _temp;
return MONTH;
} else {
(*date).day--;
}
break;
case MONTH:
if((*date).month == 1) {
(*date).month = 12;
return YEAR;
} else {
(*date).month--;
}
break;
case YEAR:
if((*date).year <= 0) {
(*date).year = 99;
} else {
(*date).year--;
}
break;
}
_temp = getDaysFormOneMonth(((*date).year < 100) ? ((*date).year + 2000) : ((*date).year), (*date).month);
if((*date).day > _temp) {
(*date).day = _temp;
}
return 0;
}
#define SEC_P_DAY (86400)
#define SEC_P_NORMAL_YEAR (31536000)
#define SEC_P_LEAP_YEAR (31622400)
#define UNIX_2000_UTC (946684800ul)
#define UNIX_2100_UTC (4102444800ul)
uint32_t unix_timestamp(uint8_t sec, uint8_t min, uint8_t hrs, uint8_t day, uint8_t mon, uint16_t year) {
uint16_t y = 2000 + year - 1; // year var
uint32_t unix = UNIX_2000_UTC;
uint16_t d = 0; // day var
uint8_t m = mon - 1; // month var
while(y >= 2000) {
if(isLeapYear(y)) {
unix += SEC_P_LEAP_YEAR;
} else {
unix += SEC_P_NORMAL_YEAR;
}
y -= 1;
}
while(m > 0) {
d += getDaysFormOneMonth(year, m);
m -= 1;
}
unix += (d + day - 1) * SEC_P_DAY;
unix += hrs * 3600 + min * 60 + sec;
return unix;
}
sTIMEDATE* unix2YMDHMS(uint32_t unix_time) {
static sTIMEDATE ret = {
{0, 0, 0},
{0, 0, 0}
};
if((unix_time < UNIX_2000_UTC) || (unix_time >= UNIX_2100_UTC)) {
ret.date.year = 0;
ret.date.month = 0;
ret.date.day = 0;
ret.time.hour = 0;
ret.time.min = 0;
ret.time.sec = 0;
} else {
uint16_t year = 2000;
uint8_t month = 1;
uint8_t day = 1;
uint8_t hour = 0;
uint8_t min = 0;
uint8_t sec = 0;
unix_time -= UNIX_2000_UTC;
while(1) {
if(isLeapYear(year)) {
if(unix_time >= SEC_P_LEAP_YEAR) {
unix_time -= SEC_P_LEAP_YEAR;
year += 1;
} else {
break;
}
} else {
if(unix_time >= SEC_P_NORMAL_YEAR) {
unix_time -= SEC_P_NORMAL_YEAR;
year += 1;
} else {
break;
}
}
}
while(1) {
uint32_t sec_this_mon = getDaysFormOneMonth(year, month) * SEC_P_DAY;
if(unix_time >= sec_this_mon) {
unix_time -= sec_this_mon;
month += 1;
} else {
break;
}
}
while(1) {
if(unix_time >= SEC_P_DAY) {
unix_time -= SEC_P_DAY;
day += 1;
} else {
break;
}
}
while(1) {
if(unix_time >= 3600) {
unix_time -= 3600;
hour += 1;
} else {
break;
}
}
while(1) {
if(unix_time >= 60) {
unix_time -= 60;
min += 1;
} else {
break;
}
}
sec = unix_time;
ret.date.year = year - 2000;
ret.date.month = month;
ret.date.day = day;
ret.time.hour = hour;
ret.time.min = min;
ret.time.sec = sec;
}
return &ret;
}
// is now between start and end.
bool isTimeBetween(sTIME now, sTIME start, sTIME end) {
uint32_t t0 = start.hour * 3600 + start.min * 60 + start.sec;
uint32_t t1 = end.hour * 3600 + end.min * 60 + end.sec;
uint32_t tn = now.hour * 3600 + now.min * 60 + now.sec;
if(t0 == t1) {
return false;
}
if(t0 < t1) {
return ((tn >= t0) && (tn <= t1));
} else {
return ((tn >= t1) || (tn <= t0));
}
}