stm32配置两个外部中断为什么会冲突

jonah

我配置了两个中断，但是只有配置在后面的一个外部中断能够正常使用；或者屏蔽的任意一个，剩下的中断就能正常工作。    

void EXIT1_Inital(void) {
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable GPIOB, GPIOC and AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO, ENABLE);  //RCC_APB2Periph_AFIO
  
  /* LEDs pins configuration */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

/* Connect Button EXTI Line to Button GPIO Pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource12);

EXTI_DeInit();     
/* Configure Button EXTI line */
EXTI_InitStructure.EXTI_Line = EXTI_Line12;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;  
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);

EXTI_ClearITPendingBit(EXTI_Line12);

  /* Configure the Priority Group to 0 bits */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);

  /* Enable the EXTI1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI15_10_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void EXIT2_Inital(void) {
GPIO_InitTypeDef GPIO_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;

  /* Enable GPIOB, GPIOC and AFIO clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD, ENABLE);  //RCC_APB2Periph_AFIO
  
  /* LEDs pins configuration */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOC, &GPIO_InitStructure);

/* Connect Button EXTI Line to Button GPIO Pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource2);

EXTI_DeInit();     
/* Configure Button EXTI line */
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);

EXTI_ClearITPendingBit(EXTI_Line2);

  /* Configure the Priority Group to 0 bits */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);

  /* Enable the EXTI1 Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void EXTI2_IRQHandler(void) {
if(EXTI_GetITStatus(EXTI_Line2) != RESET) {
MP_Process();

/* Clear the EXTI Line 1 */  
EXTI_ClearITPendingBit(EXTI_Line2);
}  
}

void EXTI15_10_IRQHandler(void)
{
if(EXTI_GetITStatus(EXTI_Line12) != RESET) {
if (gAnalysisNoteTag) {
AnalysisInfoHandle();
g24C02TotalCounter++;//--------------------
}
/* Clear the EXTI Line 1 */  
EXTI_ClearITPendingBit(EXTI_Line12);
}  
}

跪求大侠帮忙呀，小弟折腾两天了就是搞不出来

zc123

EXTI_DeInit(); 
 这个函数是复位整个外部中断寄存器的，你在两个函数里都有，所以在调用第二个的时候把第一个的复位了，你把后调用函数里面的这句话注释掉。
其它槽点太多。。。

jonah

原子哥，出来帮我看看吧。。。我急了两天了没解决掉

Caaaaaaat

/* Connect Button EXTI Line to Button GPIO Pin */
GPIO_EXTILineConfig(GPIO_PortSourceGPIOD, GPIO_PinSource2);这个写D了？外部中断和led的gpio哪个是哪个啊，你分开配置试试

jonah

回复【3楼】Caaaaaaat:
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我配置了两个外部中断   C12和PD2为外部中断口。我在主函数里面屏蔽任意一个，另外都能正常工作。两个外部中断都配置，只有后面的中断有效。感觉后一个配置的把前面的给覆盖了似的

jonah

回复【4楼】zc123:
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有点道理，我试试

jonah

回复【4楼】zc123:
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搞定了，多谢啦！！！