有没有大神能帮忙看看这段选择LSI作为RTC时钟源，哪里配置有问题，找不到问题。感谢感谢。

www123666 · 发表于 2019-9-4 15:11:29

_calendar_obj calendar;//ê±Öó½á11ìå

static void RTC_NVIC_Config(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;
NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn; //RTCè«¾ÖÖD¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //ÏèÕ¼óÅÏè¼¶1Î»,′óóÅÏè¼¶3Î»
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; //ÏèÕ¼óÅÏè¼¶0Î»,′óóÅÏè¼¶4Î»
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //ê1Äü¸Ãí¨μàÖD¶Ï
NVIC_Init(&NVIC_InitStructure); //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷
}

//êμê±ê±ÖóÅäÖÃ
//3õê¼»ˉRTCê±Öó,í¬ê±¼ì2aê±ÖóêÇ·ñ1¤×÷Õy3￡
//BKP->DR1óÃóú±￡′æêÇ·ñμúò»′ÎÅäÖÃμÄéèÖÃ
//·μ»Ø0:Õy3￡
//ÆäËû:′íÎó′úÂë

u8 RTC_Init(void)
{
//¼ì2éêÇ2»êÇμúò»′ÎÅäÖÃê±Öó
u8 temp=0;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); //ê1ÄüPWRoíBKPíaéèê±Öó
PWR_BackupAccessCmd(ENABLE); //ê1Äüoó±¸¼Ä′æÆ÷·ÃÎê
if (BKP_ReadBackupRegister(BKP_DR1) != 0x5051) //′óÖ¸¶¨μÄoó±¸¼Ä′æÆ÷ÖD¶á3öêy¾Y:¶á3öáËóëD′èëμÄÖ¸¶¨êy¾Y2»Ïàoõ
{
BKP_DeInit(); //¸′Î»±¸·YÇøóò
// RCC_LSEConfig(RCC_LSE_OFF); //éèÖÃía2¿μíËù¾§Õñ(LSE),ê1óÃíaéèμíËù¾§Õñ
RCC_LSICmd(ENABLE);//¿aÆôÄú2¿μíËùê±ÖóLSI
while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET&&temp<250) //¼ì2éÖ¸¶¨μÄRCC±êÖ¾Î»éèÖÃóë·ñ,μè′yμíËù¾§Õñ¾íD÷
{
temp++;
delay_ms(10);
}
if(temp>=250)return 1;//3õê¼»ˉê±Öóê§°ü,¾§ÕñóDÎêìa

RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); //éèÖÃRTCê±Öó(RTCCLK),Ñ¡ÔñLSE×÷ÎaRTCê±Öó
RCC_RTCCLKCmd(ENABLE); //ê1ÄüRTCê±Öó

RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_WaitForSynchro(); //μè′yRTC¼Ä′æÆ÷í¬2½
RTC_ITConfig(RTC_IT_SEC, ENABLE); //ê1ÄüRTCÃëÖD¶Ï
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_ITConfig(RTC_IT_ALR, ENABLE); //ê1ÄüRTCÄÖÖóÖD¶Ï
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é

RTC_EnterConfigMode();/// ÔêDíÅäÖÃ
RTC_SetPrescaler(40000); //éèÖÃRTCÔ¤·ÖÆμμÄÖμ
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_Set(2018,9,2,11,56,0);  //éèÖÃ μ±Ç° ê±¼ä
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_Alarm_Set(2018,9,2,11,56,10);  //éèÖÃ ÄÖÖó ê±¼ä
RTC_ExitConfigMode(); //íË3öÅäÖÃÄ￡ê½
BKP_WriteBackupRegister(BKP_DR1, 0X5051); //ÏòÖ¸¶¨μÄoó±¸¼Ä′æÆ÷ÖDD′èëóÃ»§3ìDòêy¾Y
}
else//Ïμí3¼ìDø¼Æê±
{

RTC_WaitForSynchro(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_EnterConfigMode();/// ÔêDíÅäÖÃ
RTC_ITConfig(RTC_IT_SEC, ENABLE); //ê1ÄüRTCÃëÖD¶Ï
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
RTC_ITConfig(RTC_IT_ALR, ENABLE); //ê1ÄüRTCÄÖÖóÖD¶Ï
RTC_ExitConfigMode(); //íË3öÅäÖÃÄ￡ê½
RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
}
RTC_NVIC_Config();//RCTÖD¶Ï·Ö×ééèÖÃ
RTC_Get();//¸üDÂê±¼ä
return 0; //ok

}
//RTCê±ÖóÖD¶Ï
//Ã¿Ãë′￥·￠ò»′Î
//extern u16 tcnt;
void RTC_IRQHandler(void)
{
if (RTC_GetITStatus(RTC_IT_SEC) != RESET)//ÃëÖóÖD¶Ï
{
RTC_Get();//¸üDÂê±¼ä
// printf("\r\n Current RTC Time:%d-%d-%d %d:%d:%d\n",calendar.w_year,calendar.w_month,calendar.w_date,calendar.hour,calendar.min,calendar.sec);
}
if(RTC_GetITStatus(RTC_IT_ALR)!= RESET)//ÄÖÖóÖD¶Ï
{
RTC_ClearITPendingBit(RTC_IT_ALR); //ÇåÄÖÖóÖD¶Ï
   RTC_Get(); //¸üDÂê±¼ä
    printf("\r\n WANG ZHONG HUI NB:%d-%d-%d %d:%d:%d\n",calendar.w_year,calendar.w_month,calendar.w_date,calendar.hour,calendar.min,calendar.sec);//êä3öÄÖáåê±¼ä

    }
RTC_ClearITPendingBit(RTC_IT_SEC|RTC_IT_OW); //ÇåÃë¡￠òç3öÖD¶Ï
RTC_WaitForLastTask();
}
//ÅD¶ÏêÇ·ñêÇèòÄêoˉêy
//ÔÂ·Y 1  2  3  4  5  6  7  8  9  10 11 12
//èòÄê 31 29 31 30 31 30 31 31 30 31 30 31
//·ÇèòÄê 31 28 31 30 31 30 31 31 30 31 30 31
//êäèë:Äê·Y
//êä3ö:¸ÃÄê·YêÇ2»êÇèòÄê.1,êÇ.0,2»êÇ
u8 Is_Leap_Year(u16 year)
{
if(year%4==0) //±ØDëÄü±»4Õû3y
{
if(year%100==0)
{
if(year%400==0)return 1;//èç1ûòÔ00½áÎ2,»1òaÄü±»400Õû3y
else return 0;
}else return 1;
}else return 0;
}
//éèÖÃê±Öó
//°ÑêäèëμÄê±Öó×a»»ÎaÃëÖó
//òÔ1970Äê1ÔÂ1èÕÎa»ù×¼
//1970~2099ÄêÎaoÏ·¨Äê·Y
//·μ»ØÖμ:0,3é1|;ÆäËû:′íÎó′úÂë.
//ÔÂ·Yêy¾Y±í
u8 const table_week[12]={0,3,3,6,1,4,6,2,5,0,3,5}; //ÔÂDTÕyêy¾Y±í
//Æ½ÄêμÄÔÂ·YèÕÆú±í
const u8 mon_table[12]={31,28,31,30,31,30,31,31,30,31,30,31};
u8 RTC_Set(u16 syear,u8 smon,u8 sday,u8 hour,u8 min,u8 sec)
{
u16 t;
u32 seccount=0;
if(syear<1970||syear>2099)return 1;
for(t=1970;t<syear;t++) //°ÑËùóDÄê·YμÄÃëÖóÏà¼ó
{
if(Is_Leap_Year(t))seccount+=31622400;//èòÄêμÄÃëÖóêy
else seccount+=31536000;    //Æ½ÄêμÄÃëÖóêy
}
smon-=1;
for(t=0;t<smon;t++)    //°ÑÇ°ÃæÔÂ·YμÄÃëÖóêyÏà¼ó
{
seccount+=(u32)mon_table[t]*86400;//ÔÂ·YÃëÖóêyÏà¼ó
if(Is_Leap_Year(syear)&&t==1)seccount+=86400;//èòÄê2ÔÂ·YÔö¼óò»ììμÄÃëÖóêy
}
seccount+=(u32)(sday-1)*86400;//°ÑÇ°ÃæèÕÆúμÄÃëÖóêyÏà¼ó
seccount+=(u32)hour*3600;//D¡ê±ÃëÖóêy
seccount+=(u32)min*60;    //·ÖÖóÃëÖóêy
seccount+=sec;//×îoóμÄÃëÖó¼óéÏè￥

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); //ê1ÄüPWRoíBKPíaéèê±Öó
PWR_BackupAccessCmd(ENABLE); //ê1ÄüRTCoíoó±¸¼Ä′æÆ÷·ÃÎê
RTC_SetCounter(seccount); //éèÖÃRTC¼ÆêyÆ÷μÄÖμ

RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é
return 0;
}

//3õê¼»ˉÄÖÖó
//òÔ1970Äê1ÔÂ1èÕÎa»ù×¼
//1970~2099ÄêÎaoÏ·¨Äê·Y
//syear,smon,sday,hour,min,sec￡oÄÖÖóμÄÄêÔÂèÕê±·ÖÃë
//·μ»ØÖμ:0,3é1|;ÆäËû:′íÎó′úÂë.
u8 RTC_Alarm_Set(u16 syear,u8 smon,u8 sday,u8 hour,u8 min,u8 sec)
{
u16 t;
u32 seccount=0;
if(syear<1970||syear>2099)return 1;
for(t=1970;t<syear;t++) //°ÑËùóDÄê·YμÄÃëÖóÏà¼ó
{
if(Is_Leap_Year(t))seccount+=31622400;//èòÄêμÄÃëÖóêy
else seccount+=31536000;    //Æ½ÄêμÄÃëÖóêy
}
smon-=1;
for(t=0;t<smon;t++)    //°ÑÇ°ÃæÔÂ·YμÄÃëÖóêyÏà¼ó
{
seccount+=(u32)mon_table[t]*86400;//ÔÂ·YÃëÖóêyÏà¼ó
if(Is_Leap_Year(syear)&&t==1)seccount+=86400;//èòÄê2ÔÂ·YÔö¼óò»ììμÄÃëÖóêy
}
seccount+=(u32)(sday-1)*86400;//°ÑÇ°ÃæèÕÆúμÄÃëÖóêyÏà¼ó
seccount+=(u32)hour*3600;//D¡ê±ÃëÖóêy
seccount+=(u32)min*60;    //·ÖÖóÃëÖóêy
seccount+=sec;//×îoóμÄÃëÖó¼óéÏè￥
//éèÖÃê±Öó
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); //ê1ÄüPWRoíBKPíaéèê±Öó
PWR_BackupAccessCmd(ENABLE); //ê1Äüoó±¸¼Ä′æÆ÷·ÃÎê
//éÏÃæèy2½êÇ±ØDëμÄ!

RTC_SetAlarm(seccount);

RTC_WaitForLastTask(); //μè′y×î½üò»′Î¶ÔRTC¼Ä′æÆ÷μÄD′2ù×÷íê3é

return 0;
}

//μÃμ½μ±Ç°μÄê±¼ä
//·μ»ØÖμ:0,3é1|;ÆäËû:′íÎó′úÂë.
u8 RTC_Get(void)
{
static u16 daycnt=0;
u32 timecount=0;
u32 temp=0;
u16 temp1=0;
timecount=RTC_GetCounter();
temp=timecount/86400; //μÃμ½ììêy(ÃëÖóêy¶Ôó|μÄ)
if(daycnt!=temp)//3¬1yò»ììáË
{
daycnt=temp;
temp1=1970; //′ó1970Äê¿aê¼
while(temp>=365)
{
if(Is_Leap_Year(temp1))//êÇèòÄê
{
if(temp>=366)temp-=366;//èòÄêμÄÃëÖóêy
else {temp1++;break;}
}
else temp-=365;    //Æ½Äê
temp1++;
}
calendar.w_year=temp1;//μÃμ½Äê·Y
temp1=0;
while(temp>=28)//3¬1yáËò»¸öÔÂ
{
if(Is_Leap_Year(calendar.w_year)&&temp1==1)//μ±ÄêêÇ2»êÇèòÄê/2ÔÂ·Y
{
if(temp>=29)temp-=29;//èòÄêμÄÃëÖóêy
else break;
}
else
{
if(temp>=mon_table[temp1])temp-=mon_table[temp1];//Æ½Äê
else break;
}
temp1++;
}
calendar.w_month=temp1+1; //μÃμ½ÔÂ·Y
calendar.w_date=temp+1;    //μÃμ½èÕÆú
}
temp=timecount%86400;      //μÃμ½ÃëÖóêy
calendar.hour=temp/3600;      //D¡ê±
calendar.min=(temp%3600)/60; //·ÖÖó
calendar.sec=(temp%3600)%60; //ÃëÖó
calendar.week=RTC_Get_Week(calendar.w_year,calendar.w_month,calendar.w_date);//»ñè¡DÇÆú
return 0;
}
//»ñμÃÏÖÔúêÇDÇÆú¼¸
//1|ÄüÃèêö:êäèë1«àúèÕÆúμÃμ½DÇÆú(Ö»ÔêDí1901-2099Äê)
//êäèë2Îêy￡o1«àúÄêÔÂèÕ
//·μ»ØÖμ￡oDÇÆúoÅ
u8 RTC_Get_Week(u16 year,u8 month,u8 day)
{
u16 temp2;
u8 yearH,yearL;

yearH=year/100; yearL=year%100;
// èç1ûÎa21êà¼í,Äê·Yêy¼ó100
if (yearH>19)yearL+=100;
// Ëù1yèòÄêêyÖ»Ëã1900ÄêÖ®oóμÄ
temp2=yearL+yearL/4;
temp2=temp2%7;
temp2=temp2+day+table_week[month-1];
if (yearL%4==0&&month<3)temp2--;
return(temp2%7);
}