首先，看一下stop模式下的说明：这是stm32l1xx 参考手册的说明，如果英文看不懂的话，可以查 找stm32f10x的中文参考手册的说明看一下，意思差不多。 

//RTC 时钟配置 void rtc_init(void) { uint32_t timeout = 600000; RTC_InitTypeDef RTC_InitStructure; EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; /* Enable the PWR clock */ RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); /* Allow access to RTC */ PWR_RTCAccessCmd(ENABLE); RTC_WaitForSynchro(); /* Enable the LSE OSC */ RCC_LSEConfig(RCC_LSE_ON); /* Wait till LSE is ready */ while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET) { timeout--; if (timeout == 0) break; } if (timeout == 0) { ; } else { } RCC_LSICmd(ENABLE); while (RCC_GetFlagStatus(RCC_FLAG_LSIRDY) == RESET) RCC_RTCCLKConfig(RCC_RTCCLKSource_LSI); RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE); /* Select the RTC Clock Source */ /* Enable the RTC Clock */ RCC_RTCCLKCmd(ENABLE); RTC_WaitForSynchro(); /* Wait for RTC APB registers synchronisation */ /* Configure the RTC data register and RTC prescaler */ if (RTC_ReadBackupRegister(RTC_BKP_DR0) != 0x32F2) { //从指定的后备寄存器中读出数据:读出 了与写入的指定数据不相乎 RTC_InitStructure.RTC_AsynchPrediv = 0x7F; RTC_InitStructure.RTC_SynchPrediv = 0xFF; RTC_InitStructure.RTC_HourFormat = RTC_HourFormat_24; RTC_Init(&RTC_InitStructure); RTC_WriteBackupRegister(RTC_BKP_DR0, 0x32F2); } RTC_WaitForSynchro(); 

/* RTC 唤醒中端配置: Clock Source: RTCDiv_16, Wakeup Time Base: 4s */ RTC_WakeUpClockConfig(RTC_WakeUpClock_RTCCLK_Div16); //这两句不需要 RTC_SetWakeUpCounter(0x1FFF); //0x1FFF = 8191; 4s = (8191+1)*(1/(32768/16)) // // ｝ //RTC定时器A的配置 void platform_rtc_set_alarmA(void) { EXTI_InitTypeDef EXTI_InitStructure; NVIC_InitTypeDef NVIC_InitStructure; RTC_AlarmTypeDef RTC_AlarmStructure; //非待机模式，RTC alarm timer中断配置及中断处理 EXTI_ClearITPendingBit(EXTI_Line17); EXTI_InitStructure.EXTI_Line = EXTI_Line17; EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; //中断事件 EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising; //上升沿触发 EXTI_InitStructure.EXTI_LineCmd = ENABLE; //使能LINE17 EXTI_Init(&EXTI_InitStructure); /* Enable the RTC Wakeup Interrupt */ NVIC_InitStructure.NVIC_IRQChannel = RTC_Alarm_IRQn; //RTC_Alarm_IRQn RTC_WKUP_IRQn NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //抢占优先级 NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; NVIC_Init(&NVIC_InitStructure); RTC_GetTime(RTC_Format_BIN, &RTC_AlarmStructure.RTC_AlarmTime); //每月29号的上午8点定时器唤醒，也可以配制成按星期唤醒，如每周一的早上8点唤醒 RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = 8; //小时 RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = 0; //分钟 RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = 0; RTC_AlarmStructure.RTC_AlarmTime.RTC_H12 = RTC_H12_AM; RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x29; RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date; //按日期， 也可以按星期几 RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay; //屏蔽星期和日期 RTC_AlarmCmd(RTC_Alarm_A, DISABLE); //关闭闹钟A，以便进行配置参数写入。 RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure); RTC_AlarmCmd(RTC_Alarm_A, ENABLE); //开启闹钟A RTC_ClearITPendingBit(RTC_IT_ALRA); //清除RTC闹钟A的标志 

EXTI_ClearITPendingBit(EXTI_Line17); //清除LINE17上的中断标志位 } //定时器唤醒处理中断。 void RTC_Alarm_IRQHandler(void) { if (RTC_GetITStatus(RTC_IT_ALRA) != RESET) { RTC_ClearITPendingBit(RTC_IT_ALRA); EXTI_ClearITPendingBit(EXTI_Line17); CHECK_VOL_FLAG = 1; //唤醒后置位检测电压的标志 } } 定时每月28日的上午8点唤醒后，程序会从进入stop模式的下一句开始执行。 执行效果 int main(void) { platform_rcc_init(); //SYSCLK,PLLCKL,HCLK,PCK1(APB1),PLK2(APB2)时钟初始化配置 rtc_init(); printf("Boot Initialization!\n"); SetRTC(75900, 191029, 2); platform_rtc_set_alarmA(); while (1) { //设置时间为19年10约29日，7点59分，星期2 printf("\r\nwhile begin!\n"); process_usart(); //对于串口命令的处理 updatetime(); printf("datetime:%02d-%02d-%02d %02d:%02d:%02d weakday:%d\n", year, mon, day, hour, min, sec, wkday); Sys_Standby(); 

} } void Sys_Standby(void) { PWR_ClearFlag(PWR_FLAG_WU); RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE); printf("\r\n entry stop mode!\n "); PWR_EnterSTOPMode(PWR_Regulator_LowPower,PWR_STOPEntry_WFI); Usart1_Init(9600, USART_Parity_No, USART_WordLength_8b); printf("\r\n WKUP_DELAY = %d!\n ",WKUP_DELAY); //使能PWR外设时钟 //进入stop模式 } ———————————————— 版权声明：本文为CSDN博主「恋雪1986」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上 原文出处链接及本声明。 原文链接：https://blog.csdn.net/u012523921/article/details/102794651