STM32停止模式唤醒(RTC+多外部中断) 不定期失效

void LowPower_CloseAllClcok(void)

{

RCC_AHBPeriphClockCmd(RCC_AHBPeriph_TS | RCC_AHBPeriph_CRC | RCC_AHBPeriph_FLITF | RCC_AHBPeriph_DMA1 ,DISABLE);

RCC_APB2PeriphClockCmd(/*RCC_APB2Periph_SYSCFG |*/ RCC_APB2Periph_ADC1 | RCC_APB2Periph_TIM1 | RCC_APB2Periph_SPI1 | RCC_APB2Periph_USART1 |

RCC_APB2Periph_TIM15 | RCC_APB2Periph_TIM16 | RCC_APB2Periph_TIM17 | RCC_APB2Periph_DBGMCU,DISABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM6 | RCC_APB1Periph_TIM14| RCC_APB1Periph_WWDG |

RCC_APB1Periph_SPI2 | RCC_APB1Periph_USART2 | RCC_APB1Periph_I2C1 | RCC_APB1Periph_I2C2 | RCC_APB1Periph_PWR | RCC_APB1Periph_DAC | RCC_APB1Periph_CEC,DISABLE);

}



/*==================================================================

* Function        : LowPower_Enter

* Description        : 

* Input Para        : 

* Output Para        : 

* Return Value: 

==================================================================*/

void LowPower_Enter(void)

{

DEBUG_MSG(LOWPOWER_DEBUG,("LowPower_Enter******* \r\n"));

SysTimer_DeInit();

LowPower_CloseAllClcok();

RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR,ENABLE);

LowPower_ConfigWakeUp();

g_sLowPowerInfo.LowPowerBits.Bits.bIsLowPower = 1;

EXTI_ClearITPendingBit(EXTI_Line0 | EXTI_Line1 | EXTI_Line4 | EXTI_Line6 | EXTI_Line7 | EXTI_Line9 | EXTI_Line11 | EXTI_Line15 | EXTI_Line17);



PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);

}





/*==================================================================

* Function        : LowPower_Exit

* Description        : 

* Input Para        : 

* Output Para        : 

* Return Value: 

==================================================================*/

void LowPower_Exit(void)

{

if(!g_sLowPowerInfo.LowPowerBits.Bits.bIsWakeUp)

return;

g_sLowPowerInfo.LowPowerBits.Bits.bIsWakeUp = 0;

if(!g_sLowPowerInfo.LowPowerBits.Bits.bIsLowPower)

return;

RTC_AlarmCmd(RTC_Alarm_A, DISABLE);

LowPower_DisableWakeUp();

SystemInit();

g_sLowPowerInfo.LowPowerBits.Bits.bIsLowPower = 0;

}





void LowPower_SetWakeUp(void)

{

g_sLowPowerInfo.LowPowerBits.Bits.bIsWakeUp = 1;

}









================================================================================================================

主函数的大概处理

void Main(void)

{

.............



while(1)

{

............

LowPower_Exit();

...............

}



}

=======================================================================================================================

中断服务程序的处理，



void EXTI0_1_IRQHandler(void)

{

if(EXTI_GetITStatus(EXTI_Line0) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line0); 



LowPower_SetWakeUp();

} 

else if(EXTI_GetITStatus(EXTI_Line1) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line1); 



LowPower_SetWakeUp();

} 



}



void EXTI4_15_IRQHandler(void)

{

if(EXTI_GetITStatus(EXTI_Line11) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line11); 



LowPower_SetWakeUp();



} 

else if(EXTI_GetITStatus(EXTI_Line15) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line15); 



LowPower_SetWakeUp();

} 

else if(EXTI_GetITStatus(EXTI_Line9) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line9); 





LowPower_SetWakeUp();

} 

else if(EXTI_GetITStatus(EXTI_Line7) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line7); 





LowPower_SetWakeUp();

} 

else if(EXTI_GetITStatus(EXTI_Line6) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line6); 





LowPower_SetWakeUp();

} 

else if(EXTI_GetITStatus(EXTI_Line4) != RESET){ 

EXTI_ClearITPendingBit(EXTI_Line4); 





LowPower_SetWakeUp();

} 

}





void RTC_IRQHandler(void)

{

if (RTC_GetITStatus(RTC_IT_ALRA) != RESET)

{

LowPower_SetWakeUp();

/* Clear the Alarm A Pending Bit */

RTC_ClearITPendingBit(RTC_IT_ALRA);



/* Clear EXTI line17 pending bit */

EXTI_ClearITPendingBit(EXTI_Line17); 

}

}