RTC_Alarm.rar_RTC闹钟_STM32 RTC_rtc alarm_rtc alarm中断

#include "RTC_Alarm.h" //RTC中断配置 static void RTC_NVIC_Config(void) { NVIC_InitTypeDef NVIC_InitStructure; NVIC_InitStructure.NVIC_IRQChannel = RTC_IRQn; //RTC全局中断 NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3; //先占优先级1位,从优先级3位 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //使能该通道中断 NVIC_Init(&NVIC_InitStructure); //根据NVIC_InitStruct中指定的参数初始化外设NVIC寄存器 } //RTC闹钟初始化:启动时钟、配置LSI做RTC时钟、设置预分频40000得到1Hz //设置运行时间WORK_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(); /* 使能RTC闹钟中断*/ RTC_ITConfig(RTC_IT_ALR, ENABLE); /* Wait until last write operation on RTC registers has finished */ RTC_WaitForLastTask(); /* 使能RTC秒判断*/ RTC_ITConfig(RTC_IT_SEC, ENABLE); /* Wait until last write operation on RTC registers has finished */ RTC_WaitForLastTask(); /* Set RTC prescaler: set RTC period to 1sec */ RTC_SetPrescaler(32767); /* Wait until last write operation on RTC registers has finished */ RTC_WaitForLastTask(); //中断配置 //RTC_NVIC_Config(); //设置运行WORK_TIMES //RTC_SetAlarm(RTC_GetCounter() + WORK_TIMES); RTC_SetAlarm(10); RTC_WaitForLastTask(); } //设置闹钟时长并进入待机 //s为中断秒数 void RTC_Enter_StandbyMode(u32 s) { RTC_SetAlarm(RTC_GetCounter() + s); RTC_WaitForLastTask(); // 进入待机模式, 此时所有1.8V域的时钟都关闭,HIS和HSE的振荡器关闭, 电压调节器关闭. // 只有WKUP引脚上升沿,RTC警告事件,NRST引脚的外部复位,IWDG复位. /* Request to enter STANDBY mode (Wake Up flag is cleared in PWR_EnterSTANDBYMode function) */ PWR_EnterSTANDBYMode(); } /* //中断服务函数 void RTC_IRQHandler(void) { if(RTC_GetITStatus(RTC_IT_ALR)!= RESET)//闹钟中断 { RTC_ClearITPendingBit(RTC_IT_ALR); //清闹钟中断 RTC_Enter_StandbyMode(STANDBY_TIMES);//进入待机 } } */ /******************************************************************************* * Function Name : RTC_Alarm_Init * Description : RTC Initialization * Input : None * Output : None * Return : None * Attention : None *******************************************************************************/ void RTC_Alarm_Init(void) { if (BKP_ReadBackupRegister(BKP_DR1) != 0xA5A5) { /* Backup data register value is not correct or not yet programmed (when the first time the program is executed) */ printf("RTC 还没有被设置....\r\n"); /* RTC Configuration */ RTC_Alarm_Configuration(); //Time_Regulate(); //Time_Adjust(); /* Adjust time by values entred by the user on the hyperterminal */ printf("RTC 初始化....\r\n"); BKP_WriteBackupRegister(BKP_DR1, 0xA5A5); } else { /* Check if the Power On Reset flag is set */ if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET) { printf("发生一次电源上电重启....\r\n"); } /* Check if the Pin Reset flag is set */ else if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET) { printf("发生一次外部复位....\r\n"); } printf("不需要设置RCT....\r\n"); /* Wait for RTC registers synchronization */ //RTC_WaitForSynchro(); /* 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); //naozhong RTC_WaitForLastTask(); //等待写入完成 } /* NVIC configuration */ RTC_NVIC_Config(); #ifdef RTCClockOutput_Enable /* Enable PWR and BKP clocks */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE); /* Allow access to BKP Domain */ PWR_BackupAccessCmd(ENABLE); /* Disable the Tamper Pin */ BKP_TamperPinCmd(DISABLE); /* To output RTCCLK/64 on Tamper pin, the tamper functionality must be disabled */ /* Enable RTC Clock Output on Tamper Pin */ BKP_RTCOutputConfig(BKP_RTCOutputSource_CalibClock); #endif /* Clear reset flags */ RCC_ClearFlag(); return; }