rtc闹钟都配置好了,就是到点之后唤醒不了
===============rtc配置=======================
EX
ti_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);
/*使能 RTC Wakeup Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = RTC_Al
ARM_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
//先关闭 RTC_AlarmCmd(RTC_Alarm_A,DISABLE); 才能使用RTC_SetAlarm
ret = RTC_AlarmCmd(RTC_Alarm_A,DISABLE);
printf("ret = %d
",ret);
RTC_AlarmStruct.RTC_AlarmTime.RTC_H12=RTC_HourFormat_24;
RTC_AlarmStruct.RTC_AlarmTime.RTC_Hours=9;
RTC_AlarmStruct.RTC_AlarmTime.RTC_Minutes=59;
RTC_AlarmStruct.RTC_AlarmTime.RTC_Seconds=20;
// RTC_AlarmStruct.RTC_AlarmDateWeekDay=
// RTC_AlarmStruct.RTC_AlarmDateWeekDaySel=
RTC_AlarmStruct.RTC_AlarmMask=RTC_AlarmMask_Seconds | RTC_AlarmMask_Minutes | RTC_AlarmMask_Hours;
RTC_SetAlarm(RTC_Format_BIN,RTC_Alarm_A,&RTC_AlarmStruct);
RTC_ClearFlag(RTC_FLAG_ALRAF)
===================主函数调用=========================
while(1)
PWR_EnterSTOPMode( PWR_Regulator_LowPower, PWR_STOPEntry_WFI );
//进去之后就出不来了 求指导
1:对于程序可能产生的标志位必须的清除干净,不清除会出现唤醒失灵现象!!
2:由于停机下所有时钟关闭,所以唤醒需要重新配置时钟!!
参考代码:
char Wakeflag=0;
void RTCAlarm_IRQHandler(void)
{
if(RTC_GetFlagStatus(RTC_IT_ALR))
{
EXTI_ClearITPendingBit(EXTI_Line17);
RTC_ClearITPendingBit(RTC_IT_ALR);
RTC_WaitForLastTask();
EXTI_ClearITPendingBit(EXTI_Line7);
EXTI_ClearITPendingBit(EXTI_Line1);//对于程序可能产生的标志位必须的清除干净,不清除会出现唤醒失灵现象!!
if(PWR_GetFlagStatus(PWR_FLAG_WU) != RESET)
{
PWR_ClearFlag(PWR_FLAG_WU);//一般没用
}
SystemInit();//重要,由于停机下对所有时钟关闭,所以唤醒需要重新配置时钟!!
Wakeflag=!Wakeflag;
GPIO_WriteBit(GPIOA, GPIO_Pin_5, Wakeflag);//LED灯指示
}
}
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