外部中断问题

heji82

我现在使用外部中断，引脚接了10K上拉，10nF滤波电容，但是现在所有引脚是高电平，程序中经常进入 中断 2，5，9，但是12，15中断不会进入，请各位大侠看看什么原因




//外部中断
 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    //上来输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOE, &GPIO_InitStructure);
 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource2);
   EXTI_InitStructure.EXTI_Line=EXTI_Line2;
   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 = EXTI2_IRQn;   
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;   
   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
   NVIC_Init(&NVIC_InitStructure);

 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    //上来输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOE, &GPIO_InitStructure);
 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource5);
   EXTI_InitStructure.EXTI_Line=EXTI_Line5;
   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; 
   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
   EXTI_InitStructure.EXTI_LineCmd = ENABLE;
   EXTI_Init(&EXTI_InitStructure);

 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    //上来输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOE, &GPIO_InitStructure);
 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource9);
   EXTI_InitStructure.EXTI_Line=EXTI_Line9;
   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 = 0x00;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x02;   
   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
   NVIC_Init(&NVIC_InitStructure);

 GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12|GPIO_Pin_15;    
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    //上来输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
 GPIO_Init(GPIOE, &GPIO_InitStructure);
 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource12);
   EXTI_InitStructure.EXTI_Line=EXTI_Line12;
   EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt; 
   EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
   EXTI_InitStructure.EXTI_LineCmd = ENABLE;
   EXTI_Init(&EXTI_InitStructure);

 GPIO_EXTILineConfig(GPIO_PortSourceGPIOE,GPIO_PinSource15);
   EXTI_InitStructure.EXTI_Line=EXTI_Line15;
   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 = EXTI15_10_IRQn;   
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x03;   
   NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;     
   NVIC_Init(&NVIC_InitStructure);

正点原子

一个个测试。