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   源码介绍

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STM32单片机待机唤醒，stm32进入低功耗模式，时间到达后自动唤醒，时间均可自由配置。

#include "RTC_Alarm.h"
#include "stm32f10x_rtc.h"
#include "led.h"

//RTCÖжÏÅäÖÃ
static void RTC_NVIC_Config(void)
{    
    NVIC_InitTypeDef NVIC_InitStructure;

    NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn;        //RTCÈ«¾ÖÖжÏ
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;    //ÏÈÕ¼ÓÅÏȼ¶1λ,´ÓÓÅÏȼ¶3λ
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;   
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;        //ʹÄܸÃͨµÀÖжÏ
    NVIC_Init(&NVIC_InitStructure);        //¸ù¾ÝNVIC_InitStructÖÐÖ¸¶¨µÄ²ÎÊý³õʼ»¯ÍâÉèNVIC¼Ä´æÆ÷
}

//RTCÄÖÖÓ³õʼ»¯:Æô¶¯Ê±ÖÓ¡¢ÅäÖÃLSI×öRTCʱÖÓ¡¢ÉèÖÃÔ¤·ÖƵ40000µÃµ½1Hz
//ÉèÖÃÔËÐÐʱ¼äWORK_TIMES
void RTC_Alarm_Configuration(void)
{
	/* Enable PWR and BKP clocks */
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
	/* Allow access to BKP Domain */
	PWR_BackupAccessCmd(ENABLE);	
	/* Reset Backup Domain */
	BKP_DeInit();

    /* RTC clock source configuration ----------------------------------------*/
	/* Enable the LSI OSC */
  	RCC_LSICmd(ENABLE);
    /* Wait till LSI is ready */
    while(RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET)
    {
    }
    /* Select the RTC Clock Source */
    RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);
    /* Enable the RTC Clock */
    RCC_RTCCLKCmd(ENABLE);
	/* Wait for RTC registers synchronization */
	RTC_WaitForSynchro();
	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask(); 
	/* ʹÄÜRTCÄÖÖÓÖжÏ*/
	RTC_ITConfig(RTC_IT_ALR, ENABLE);	
	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask();	
	/* Set RTC prescaler: set RTC period to 1sec */
	RTC_SetPrescaler(40000);	
	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask();
		
	//ÖжÏÅäÖÃ
	RTC_NVIC_Config();

	//ÉèÖÃÔËÐÐWORK_TIMES
	RTC_SetAlarm(RTC_GetCounter()   WORK_TIMES);
	RTC_WaitForLastTask();
}

//ÉèÖÃÄÖÖÓʱ³¤²¢½øÈë´ý»ú
//sΪÖжÏÃëÊý
void RTC_Enter_StandbyMode(u32 s)
{

    RTC_SetAlarm(RTC_GetCounter()   s);
    RTC_WaitForLastTask();
    // ½øÈë´ý»úģʽ, ´ËʱËùÓÐ1.8VÓòµÄʱÖÓ¶¼¹Ø±Õ,HISºÍHSEµÄÕñµ´Æ÷¹Ø±Õ, µçѹµ÷½ÚÆ÷¹Ø±Õ.
    // Ö»ÓÐWKUPÒý½ÅÉÏÉýÑØ,RTC¾¯¸æʼþ,NRSTÒý½ÅµÄÍⲿ¸´Î»,IWDG¸´Î».
	/* Request to enter STANDBY mode (Wake Up flag is cleared in PWR_EnterSTANDBYMode function) */
    PWR_EnterSTANDBYMode();
}

//ÖжϷþÎñº¯Êý
void RTC_IRQHandler(void)
{
 if(RTC_GetITStatus(RTC_IT_ALR)!= RESET)//ÄÖÖÓÖжÏ
 {
  	
 }      
    LED1=!LED1;
    RTC_ClearITPendingBit(RTC_IT_ALR);  //ÇåÄÖÖÓÖжÏ
		RTC_WaitForLastTask();
	  RTC_Enter_StandbyMode(STANDBY_TIMES);//½øÈë´ý»ú 
}