#include "RTC.h"


void RTC_SET_ALARM(u32 sec)
{
	//DEBUG_COM_STREAM("-??-",NULL);
	RTC_SetAlarm(RTC_GetCounter()+sec);
	//DEBUG_COM_STREAM("-??1-",NULL);
	RTC_WaitForLastTask();
	//DEBUG_COM_STREAM("-??2-",NULL);
	RTC_ITConfig(RTC_FLAG_ALR,ENABLE);
}

void RTC_Configuration(uint16_t interval)
{
	EXTI_InitTypeDef EXTI_InitStructure;
	
	/* 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();

	RCC_LSICmd(ENABLE);
	/* Enable LSE */
	//RCC_LSEConfig(RCC_LSE_ON);
	/* Wait till LSE is ready */
	while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET){}

	/* Select LSE as RTC Clock Source */
	RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI);

	/* Enable RTC Clock */
	RCC_RTCCLKCmd(ENABLE);

	/* Wait for RTC registers synchronization */
	RTC_WaitForSynchro();

	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask();

	/* Enable the RTC Second */
	//RTC_ITConfig(RTC_IT_SEC, ENABLE);

	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask();
		
	RTC_ITConfig(RTC_IT_ALR,ENABLE); //?? RTC ???  
		RTC_WaitForLastTask();
	/* Set RTC prescaler: set RTC period to 1sec */
	RTC_SetPrescaler(interval); /* RTC period = RTCCLK/RTC_PR = (32.768 KHz)/(32767+1) */

	/* Wait until last write operation on RTC registers has finished */
	RTC_WaitForLastTask();
	RTC_SET_ALARM(1);
	
	//RTCÍⲿÖжÏʹÄÜ
	EXTI_InitStructure.EXTI_Line = EXTI_Line17;
    EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure); 
	
}