ST意法半导体中文论坛stm32进入stop后，部分高优先级中断能唤醒的问题

libing1029 发表于 2018-11-27 20:50:54

stm32进入stop后，部分高优先级中断能唤醒的问题

我用的是stm32l152rbt6的片子，利用WFI进入stop模式，开启了4个外部中断和一个RTC定时唤醒喂狗的中断，void EXTIX_Init(void) {

      EXTI_InitTypeDef EXTI_InitStructure;
      NVIC_InitTypeDef NVIC_InitStructure;


   GPIO_InitTypeDefGPIO_InitStructure;
//
GlobalInitFlag =0;
GlobalOperateFlag =0;
GlobalFeedFlag =0;
cardsuccess = 0;

      RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOC, ENABLE);       //使能PB,PE端口时钟

   RCC_APB2PeriphClockCmd( RCC_APB2Periph_SYSCFG, ENABLE);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP; //下拉
GPIO_Init(GPIOC, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin =GPIO_Pin_5 ;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOC, &GPIO_InitStructure);

SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOC,EXTI_PinSource2);
SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOC,EXTI_PinSource6);
SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOC,EXTI_PinSource11);
SYSCFG_EXTILineConfig( EXTI_PortSourceGPIOC,EXTI_PinSource5);

//
EXTI_ClearITPendingBit(EXTI_Line2);
      EXTI_InitStructure.EXTI_Line=EXTI_Line2;
      EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
      EXTI_InitStructure.EXTI_LineCmd = ENABLE;
      EXTI_Init(&EXTI_InitStructure);

      NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn ;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x06;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

EXTI_ClearITPendingBit(EXTI_Line6);
   EXTI_InitStructure.EXTI_Line=EXTI_Line6;
      EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
      EXTI_InitStructure.EXTI_LineCmd = ENABLE;
      EXTI_Init(&EXTI_InitStructure);

      NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x05;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

EXTI_ClearITPendingBit(EXTI_Line11);
EXTI_InitStructure.EXTI_Line=EXTI_Line11;
      EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
      EXTI_InitStructure.EXTI_LineCmd = ENABLE;
      EXTI_Init(&EXTI_InitStructure);

NVIC_ClearPendingIRQ(EXTI15_10_IRQn);
      NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn ;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x02;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

//

EXTI_InitStructure.EXTI_Line=EXTI_Line5;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

NVIC_InitStructure.NVIC_IRQChannel = EXTI9_5_IRQn ;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x06;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

}
void RTC_WackupConfig(void)
{
EXTI_InitTypeDef EXTI_InitStructure;

NVIC_InitTypeDef NVIC_InitStructure;

/* EXTI configuration */
EXTI_ClearITPendingBit(EXTI_Line20);
EXTI_InitStructure.EXTI_Line = EXTI_Line20;
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_WKUP_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);

RTC_ITConfig(RTC_IT_WUT, ENABLE);
RTC_ClearFlag(RTC_FLAG_WUTF);
RTC_WakeUpCmd(DISABLE);
RTC_WakeUpClockConfig(RTC_WakeUpClock_CK_SPRE_16bits);
RTC_SetWakeUpCounter(20);

/* Enable the alarmA */
RTC_WakeUpCmd(ENABLE);

}

正常情况五个中断都能唤醒单片机，但有时会出现只有两个最高优先级的中断能唤醒单片机，其它3个都唤醒不了单片机
下面是进入低功耗的代码
void LowerPoer() {

CloseLight();
// __set_PRIMASK(1);
KeyCloseInterrupt();
CardCloseInterrupt();
FingerCloseInterrupt();
NrfCloseInterrupt();

GlobalInitFlag = 0;
delay_ms(1);
// if(GPIO_ReadInputDataBit(GPIOC ,GPIO_Pin_5 )!=0x01){
//    if(EnterLPCD()){
//       MFRST_L ;
//       }
// }
EXTI_ClearITPendingBit(EXTI_Line2);
NVIC_ClearPendingIRQ(EXTI2_IRQn);

EXTI_ClearITPendingBit(EXTI_Line11);
NVIC_ClearPendingIRQ(EXTI15_10_IRQn);

EXTI_ClearITPendingBit(EXTI_Line6);
EXTI_ClearITPendingBit(EXTI_Line5);

NVIC_ClearPendingIRQ(EXTI9_5_IRQn);
EntryLowerPoer();
}

void EntryLowerPoer(void ) {
GPIO_InitTypeDefGPIO_InitStructure;

RCC->AHBENR = 0x00000000;
RCC->APB1ENR = 0x00000000;
RCC->APB2ENR = 0x00000000;

RCC->AHBLPENR= 0x00000000;
RCC->APB1LPENR = 0x00000000;
RCC->APB2LPENR = 0x00000000;

RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA |
                        RCC_AHBPeriph_GPIOB |
                        RCC_AHBPeriph_GPIOC |
                        RCC_AHBPeriph_GPIOD |
                        RCC_AHBPeriph_GPIOE |
                        RCC_AHBPeriph_GPIOH, ENABLE );

/* Set all unused GPIO pins as analog inputs to reduce the power consumption */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
// GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_Init(GPIOB, &GPIO_InitStructure);
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_Init(GPIOE, &GPIO_InitStructure);
GPIO_Init(GPIOH, &GPIO_InitStructure);

GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_2|GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7
                                    |GPIO_Pin_8|GPIO_Pin_9|GPIO_Pin_10|GPIO_Pin_11|GPIO_Pin_12|GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_400KHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);

RCC_AHBPeriphClockCmd( RCC_AHBPeriph_GPIOA |
                        RCC_AHBPeriph_GPIOB |
                        RCC_AHBPeriph_GPIOC |
                        RCC_AHBPeriph_GPIOD |
                        RCC_AHBPeriph_GPIOE |
                        RCC_AHBPeriph_GPIOH, DISABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
PWR_FastWakeUpCmd(ENABLE);
PWR_UltraLowPowerCmd(ENABLE);

// Rtc_Init(); //RTC初始化
// RTC_WackupConfig();
EXTIX_Init();

//          SysTick->CTRL &= (~SysTick_CTRL_ENABLE);
//
/* Disable VREFINT to save current */
   PWR->CR |= PWR_CR_ULP; //10ua

/* Disable PVDE to save current */
   PWR->CR &= (~PWR_CR_PVDE);
//                      RTC_configration();
//                exti.ReceiveInitFlag= 1;

PWR_EnterSTOPMode(PWR_Regulator_LowPower, PWR_STOPEntry_WFI);
//    __set_PRIMASK(0);
//////                      GPIO_ResetBits(GPIOC,GPIO_Pin_0);
//////                   delay_ms(500);
}

有谁遇到类似的问题吗，麻烦解答一下

butterflyspring 发表于 2018-11-27 20:50:55

如果那3个中断没有唤醒的话，一个方法就是直接调试那三个中断，看看原因在哪里。先不用进入低功耗，看看中断能否发生，然后再进去试试。注意尽量不要用到调试脚，否则不好观测了。

libing1029 发表于 2018-12-24 11:26:33

butterflyspring 发表于 2018-12-5 15:36
如果那3个中断没有唤醒的话，一个方法就是直接调试那三个中断，看看原因在哪里。先不用进入低功耗，看看中 ...

查了一些资料，说进入低功耗模式前关闭所有中断，唤醒后在打开全部中断，可以避免这个现象，测试的结果短期内没有复现这个现象

butterflyspring 发表于 2018-12-25 17:07:50

当然关闭所有中断就不会有唤醒源了，所以要关闭不相关的中断。

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stm32进入stop后，部分高优先级中断能唤醒的问题