stm32外中断

chenlianzhi

 
   最近测试STM32的UCOS外中断,发现了一个有意思的问题,设定的下降沿中断,结果在输入的很多上升沿也中断了,而且当2个外中断同时到来时,会有一个中断丢失(不执行),请大家帮忙看一下:
   中断输入是PD3,PB12,PB13
输入配置
   GPIOA->CRH=0x44444440;  
   GPIOB->CRL=0x33333433;
   GPIOB->CRH=0x44444333; 
   GPIOC->CRL=0x44444444;
   GPIOC->CRH=0x44344B44;
   GPIOD->CRL=0x44444444;
   GPIOD->CRH=0x44444444;
   GPIOE->CRL=0x33333333;
中断配置:
               AFIO->EXTICR[3]=0x0011; //15 14 13 12            //0a1b2c
               AFIO->EXTICR[2]=0x0000; //11 10 9 8
               AFIO->EXTICR[1]=0x0000; //7   6 5 4
               AFIO->EXTICR[0]=0x3000; //3   2 1 0
               EXTI->FTSR=0x3008;
EXTI->RTSR=0;
 
               EXTI->IMR= 0x3008;
               EXTI->EMR= 0x3008;
          MY_NVIC_Init(4,0,EXTI3_IRQChannel,4);
          MY_NVIC_Init(5,0,EXTI15_10_IRQChannel,4);
中断程序:
   void EXTI3_IRQHandler(void)
     {
        //OSIntEnter();
     if (EXTI-&gtR & (1