Tcreat 发表于 2020-8-19 08:42 这里有你要的例程 ：https://www.stmcu.org.cn/document/detail/index/id-213581 之前按例程中的方法配置的就不进中断了，没找出来原因 void RTC_AlarmConfig(void) { EXTI_InitTypeDef EXTI_InitStructure; RTC_AlarmTypeDef RTC_AlarmStructure; NVIC_InitTypeDef NVIC_InitStructure; RTC_AlarmStructInit(&RTC_AlarmStructure); /* EXTI configuration */ EXTI_ClearITPendingBit(EXTI_Line17); 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); /* Enable the RTC Alarm Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = 2;//RTC_IRQn; NVIC_InitStructure.NVIC_IRQChannelPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); /* Set the alarmA Masks */ RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_All; RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure); /* Set AlarmA subseconds and enable SubSec Alarm : generate 8 interripts per Second */ RTC_AlarmSubSecondConfig(RTC_Alarm_A, 0xFF, RTC_AlarmSubSecondMask_SS14_8); /* Enable AlarmA interrupt */ RTC_ITConfig(RTC_IT_ALRA, ENABLE); } void RTC_IRQHandler(void) { USART1_Printf_RTC(); //RTC /* Check on the AlarmA flag and on the number of interrupts per Second (60*8) */ if(RTC_GetITStatus(RTC_IT_ALRA) != RESET) { /* ALARM is enabled */ // ALARM_Occured = 1; /* Clear RTC AlarmA Flags */ RTC_ClearITPendingBit(RTC_IT_ALRA); } /* Clear the EXTIL line 17 */ EXTI_ClearITPendingBit(EXTI_Line17); }
