RTC Configuration and initialization of STM32-rtc.h RTC.C

<rtc.h>#include"stm32f10x.h"#ifndef _rtc_h#define_rtc_htypedefstruct{vu8 hour;    Vu8 Mintue;    Vu8 second;    VU16 year;    Vu8 month;    Vu8 Day; Vu8 Week;} _calendar_obj;//extern _calendar_obj calendar;U8 Rtc_init (void); U8 Is_leap_year (U16 _year); _calendar_obj Rtc_getcalendar (void); U8 Rtc_getweek (U16 _year,u8 _month,u8 _day); U8 Rtc_setcalendar (U16 _year,u8 _month,u8 _day,u8 _hour,u8 _min,u8 _sec ond);#endif<rtc.c>#include"rtc.h"ConstU8 month_table[]={ to, -, to, -, to, -, to, to, -, to, -, to};ConstU8 week_table[]={0,3,3,6,1,4,6,2,5,0,3,5};_calendar_obj Calendar;voidDelay_ms (U16 time) {U16 I=0;  while(time--) {i=12000;  while(i--); }}u8 is_leap_year (U16 _year) {if((_year%4&& _year% -!=0) | (_year% -==0))return 0; Else return 1;} U8 Rtc_init (void) {U16 temp=0; //Enable RTC_CLK outside    if(Bkp_readbackupregister (BKP_DR1)! =0x5050) {rcc_apb1periphclockcmd (RCC_APB1PERIPH_PWR|rcc_apb1periph_bkp,enable);        Pwr_backupaccesscmd (ENABLE);        Bkp_deinit ();        Rcc_lseconfig (rcc_lse_on);  while(Rcc_getflagstatus (rcc_flag_hserdy) = =RESET) {Temp++; Delay_ms (Ten); }        if(temp> -)return 0;        Rcc_rtcclkconfig (Rcc_rtcclksource_lse);        Rcc_rtcclkcmd (ENABLE);        Rtc_waitforlasttask ();        Rtc_itconfig (rtc_it_sec,enable);        Rtc_waitforlasttask (); Rtc_setprescaler (32767);        Rtc_waitforlasttask (); Rtc_setcalendar ( -,Ten,Ten,Ten,Ten,Ten);          Rtc_exitconfigmode (); Bkp_writebackupregister (BKP_DR1,0x5050); }    Else{rtc_waitforsynchro ();        Rtc_itconfig (rtc_it_sec,enable);    Rtc_waitforlasttask (); }    return 1;} _calendar_obj Rtc_getcalendar (void){    StaticU16 daycount=0; U32 Timecount=Rtc_getcounter (); U32 Daynum=timecount/86400;// DayU16 temp=0; //Calendar Year    if(Daycount!=daynum)//>1{Daycount=Daynum; Temp=1970;  while(daynum>365)        {            if(Is_leap_year (temp)) {if(daynum>=366) Daynum=daynum-366; Else                     Break; }            ElseDaynum=daynum-365; Temp++; } calendar.year=temp;//Set Yeartemp=0;//Reset Temp//Calendar Month         while(daynum>= -)        {            if(Is_leap_year (calendar.year) && temp==1)            {                if(daynum>= in) daynum=daynum- in; Else  Break; }            Else            {                if(daynum>=month_table[temp]) daynum=daynum-Month_table[temp]; Else                     Break; } temp++; } calendar.month=temp+1;//Set Monthcalendar.day=daynum+1;//Set Day} daynum=timecount%86400; Calendar.hour=daynum/3600;//Set HourCalendar.mintue= (daynum%3600)/ -;//Set MintueCalendar.second= (daynum%3600)% -;//Set Second        returnCalendar;}    U8 Rtc_setcalendar (U16 _year,u8 _month,u8 _day,u8 _hour,u8 _min,u8 _second) {U16 i; U32 Seccount=0;//Second Total    if(_year<1970|| _year>2099)return 1;//valid Year//Calculate Year     for(i=1970; i<_year;i++)    {        if(Is_leap_year (i)) Seccount=seccount+3600* -*366;//3600*24*366=31622400        ElseSeccount=seccount+3600* -*365;//3600*24*365=31536000    }    //Calculate Month_month=_month-1;  for(i=0; i<_month;i++) {Seccount=seccount+ (U32) month_table[i]*3600* -; if(Is_leap_year (_year) && i==1)//February,add 1 Day{Seccount=seccount+3600* -; }    }        //Calculate Dayseccount=seccount+ (u32) (_day-1)*3600* -; Seccount+ = (u32) _hour*3600; Seccount+ = (u32) _min* -; Seccount+=_second; //Set CalendarRcc_apb1periphclockcmd (rcc_apb1periph_pwr|rcc_apb1periph_bkp,enable);    Pwr_backupaccesscmd (ENABLE);    Rtc_setcounter (Seccount);        Rtc_waitforlasttask (); return 0;}    U8 Rtc_getweek (U16 _year,u8 _month,u8 _day) {U16 temp;    U8 Yearh,yearl; Yearh=_year/ -;//2016/100=20yearl=_year% -;//2016%100=16        if(yearh> +) yearl+= -; Temp=yearl+yearl/4; Temp=temp+_day+week_table[_month-1]; if(yearl%4==0&& _month<3) Temp=temp-1; returntemp%7;}

RTC Configuration and initialization of STM32-rtc.h RTC.C