stm32L Alarm唤醒问题

zl308424 · 发表于 2013-10-15 21:59:21

有用过stm32L闹钟的朋友吗，我最近做stm32L低功耗唤醒实验，想设置成每天闹钟唤醒一次，但是实际发现闹钟只有本次设置起作用，之后就不起作用了。有朋友知道怎么使用stm32L的闹钟吗。

hjgqx · 发表于 2013-10-16 07:18:17

RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; // Nonspecific
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay; // Everyday
不知有没有设置RTC

zl308424 · 发表于 2013-10-16 08:54:00

hjgqx 发表于 2013-10-16 07:18
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; // Nonspecific
RTC_AlarmStructure.RTC_AlarmDateWeekD ...

谢谢。我就是这样设置的，的确是只能进一次alarm中断，第二天就不进了。你这样设置连续几天都能唤醒么，还是还有什么别的要设置。

zl308424 · 发表于 2013-10-18 09:17:36

顶一下，stm32l的alarm有大侠用过吗，求指导。

hjgqx · 发表于 2013-11-4 20:45:56

void rtcAlarmTime(alaramTypeDef type,eAlarm_Period ePeriod,RTC_TimeTypeDef *pTime)
{
/* Disable the Alarm A */
if(type == ALARM_A)
      RTC_AlarmCmd(RTC_Alarm_A, DISABLE);
else
      RTC_AlarmCmd(RTC_Alarm_B, DISABLE);

RTC_AlarmTypeDef RTC_AlarmStructure;

if(pTime->RTC_Hours >=12)
      RTC_AlarmStructure.RTC_AlarmTime.RTC_H12 = RTC_H12_PM;
else
      RTC_AlarmStructure.RTC_AlarmTime.RTC_H12 = RTC_H12_AM;

RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = pTime->RTC_Hours;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = pTime->RTC_Minutes;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = pTime->RTC_Seconds;
switch (ePeriod)
{
case _EVERY_MINUTE_: //-- alarm every minute
{
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; // Nonspecific
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =
RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_Minutes;
break;
}
case _EVERY_HOUR_: //-- alarm every hour
{
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; // Nonspecific
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =
RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_Hours;
break;
}
case _EVERY_DAY_: //-- alarm every day at 00:00:04
{
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31; // Nonspecific
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =
RTC_AlarmDateWeekDaySel_Date;
//RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_None;
      RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay; // Everyday
break;
}
case _EVERY_WEEK_: //-- alarm at Monday of every month
{
RTC_AlarmStructure.RTC_AlarmDateWeekDay = RTC_Weekday_Monday;
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =
RTC_AlarmDateWeekDaySel_WeekDay;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_None;
break;
}
case _EVERY_MONTH_: //-- alarm on first of every month
{
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x01;
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel =
RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_None;
break;
}
default:
{

break;
}

}

if(type == ALARM_A)
      RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure);
else
      RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_B, &RTC_AlarmStructure);

rtcAlarmConfig();

/* Enable RTC Alarm A Interrupt: this Interrupt will wake-up the system from
   STANDBY mode (RTC Alarm IT not enabled in NVIC) */
if(type == ALARM_A)
{
      RTC_ITConfig(RTC_IT_ALRA, ENABLE);
      RTC_AlarmCmd(RTC_Alarm_A, ENABLE);
      RTC_ClearFlag(RTC_FLAG_ALRAF );
}
else
{
      RTC_ITConfig(RTC_IT_ALRB, ENABLE);
      RTC_AlarmCmd(RTC_Alarm_B, ENABLE);
      RTC_ClearFlag(RTC_FLAG_ALRBF );
}
}

34071417 · 发表于 2015-11-3 22:34:41

hjgqx 发表于 2013-11-4 20:45
void rtcAlarmTime(alaramTypeDef type,eAlarm_Period ePeriod,RTC_TimeTypeDef *pTime)
{
/* Disable the ...

谢谢分享，刚好用上

3050311118 · 发表于 2015-11-4 15:01:46

是不是唤醒后需要再次设置下一次唤醒时间呢

Jaz_羯 · 发表于 2015-11-4 15:31:40

尝试每次设置完闹钟中断后清一下ISR寄存器，我之前用RTC的内部唤醒，每次设置完中断之后都要清一下ISR，不然下次进不了中断

一瘦庸人x · 发表于 2017-6-26 13:31:39

我的程序进入alarm中断几次就不会进入中断了，这是为什么呢？
void RTC_AlarmA(void)
{
/* 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 = RTC_Alarm_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

/* Disable the Alarm A ???*/
RTC_AlarmCmd(RTC_Alarm_A, DISABLE);//²»¿ÉÉÙ

RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
/* Set the alarm X+5s */
RTC_AlarmStructure.RTC_AlarmTime.RTC_H12    = RTC_TimeStructure.RTC_H12;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = RTC_TimeStructure.RTC_Hours;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = RTC_TimeStructure.RTC_Minutes;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = (RTC_TimeStructure.RTC_Seconds + 0x2) % 60;
printf("Year :%d  ",RTC_TimeStructure.RTC_Hours );
printf("Month :%d  ",RTC_TimeStructure.RTC_Minutes );
printf("Date :%d  ",RTC_TimeStructure.RTC_Seconds );
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31;
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay;//ÆÁ±ÎDate
RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure);

/* Clear PWR WakeUp flag */
PWR_ClearFlag(PWR_FLAG_WU);
/* Clear RTC Alarm A flag */
RTC_ClearFlag(RTC_FLAG_ALRAF);

/* Enable RTC Alarm A Interrupt: this Interrupt will wake-up the system from
   STANDBY mode (RTC Alarm IT not enabled in NVIC) */
RTC_ITConfig(RTC_IT_ALRA, ENABLE);
/* Enable the Alarm A */
RTC_AlarmCmd(RTC_Alarm_A, ENABLE);

/* Enable WKUP pin 1 ???*/
PWR_WakeUpPinCmd(PWR_WakeUpPin_1, ENABLE);
}

void RTC_Alarm_IRQHandler(void)
{
  if(RTC_GetITStatus(RTC_IT_ALRA) != RESET)
  {
LD4^=1;
   LD3^=1;
/* Disable the Alarm A ???*/
RTC_AlarmCmd(RTC_Alarm_A, DISABLE);//²»¿ÉÉÙ

RTC_GetTime(RTC_Format_BIN, &RTC_TimeStructure);
/* Set the alarm X+5s */
RTC_AlarmStructure.RTC_AlarmTime.RTC_H12    = RTC_TimeStructure.RTC_H12;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Hours = RTC_TimeStructure.RTC_Hours;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Minutes = RTC_TimeStructure.RTC_Minutes;
RTC_AlarmStructure.RTC_AlarmTime.RTC_Seconds = (RTC_TimeStructure.RTC_Seconds + 0x2) % 60;
printf("Year :%d  ",RTC_TimeStructure.RTC_Hours );
printf("Month :%d  ",RTC_TimeStructure.RTC_Minutes );
printf("Date :%d  ",RTC_TimeStructure.RTC_Seconds );
RTC_AlarmStructure.RTC_AlarmDateWeekDay = 0x31;
RTC_AlarmStructure.RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStructure.RTC_AlarmMask = RTC_AlarmMask_DateWeekDay;
RTC_SetAlarm(RTC_Format_BIN, RTC_Alarm_A, &RTC_AlarmStructure);

/* Clear PWR WakeUp flag */
PWR_ClearFlag(PWR_FLAG_WU);
/* Clear RTC Alarm A flag */
RTC_ClearFlag(RTC_FLAG_ALRAF);

/* Enable RTC Alarm A Interrupt: this Interrupt will wake-up the system from
   STANDBY mode (RTC Alarm IT not enabled in NVIC) */
RTC_ITConfig(RTC_IT_ALRA, ENABLE);
/* Enable the Alarm A */
RTC_AlarmCmd(RTC_Alarm_A, ENABLE);

RTC_ClearITPendingBit(RTC_IT_ALRA);
EXTI_ClearITPendingBit(EXTI_Line17);
  }
}

njwanglei · 发表于 2017-6-26 14:54:29

先检查下STM32的RTC晶振是不是有效可靠工作的

zzh90513 · 发表于 2018-8-16 18:26:27

兄弟，最后解决了吗，我现在也遇到这个现象。。。

zhuisuoji · 发表于 2018-8-17 03:24:44

我想来应该是过了一天后,日期不一样了.

wzd5230 · 发表于 2018-8-18 08:49:09

设置alarm的时候，匹配条件把年月日mask就行了。

wowangru · 发表于 2018-11-4 19:14:55

需要定时啊！！！！

stm32L Alarm唤醒问题

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