搞了几个按键中断，问题多多啊

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调试中问题有：（1）if((key_up)&&(GetState_KEY(KEY1)==0))  //这里仿佛(GetState_KEY(KEY1)==0)永久成立一样~~

所以我想问下大家在mdk调试中怎么查看寄存器的值呢？比如GPIOC->IDR

（2）按键很不稳定，有时候按2号键，它可能进入3号的中断；而其特容易触发，我感觉还没碰着按键他就跳进中断了，就跟热感应一样

 

大家帮忙看看啊~~

 

//输入宏定义

#define GetState_KEY(key_num) GPIO_ReadInputDataBit(GPIOC, GPIO_Pin_0<<(key_num)) //返回按键所端口电平状态

 

void EXTI0_IRQHandler(void)

{    

       Key_Value =0;

       //判断中断管脚

  if(EXTI_GetITStatus(EXTI_Line0) != RESET)

  { 

//                   if((key_up)&&(GPIOC->IDR & ((uint16_t)0x0001)!=0))       //按键1

                     if((key_up)&&(GetState_KEY(KEY1)==0))  //这里仿佛(GetState_KEY(KEY1)==0)永久成立一样~~ 调试到这里我松开按键，但他还是继续往下执行~~

                     {    

                            key_up=0;

                            MyDelay_nms(50);                      //消抖

                            if(GetState_KEY(KEY1)==0)   //还是继续往下执行~~

 

                       { 

                                   Key_Value =1;                     //1号键

                       }

                     }      

         /* Clear the EXTI line 0 pending bit */

    EXTI_ClearITPendingBit(EXTI_Line0);

  } 

       key_up=1;

}

void EXTI1_IRQHandler(void)

{    

       Key_Value =0; 

       //判断中断管脚

  if(EXTI_GetITStatus(EXTI_Line1) != RESET)

  { 

                     if((key_up)&&(GetState_KEY(KEY2)==0))     

                     {    

                            key_up=0;

                            MyDelay_nms(50);

                            if(GetState_KEY(KEY2)==0)  

                       { 

                                   Key_Value =2;                      

                       }

                     }                         

//            }

    /* Clear the EXTI line 1 pending bit */

    EXTI_ClearITPendingBit(EXTI_Line1);

  } 

       key_up=1;

}

void EXTI2_IRQHandler(void)

{    

       Key_Value =0; 

       //判断中断管脚

  if(EXTI_GetITStatus(EXTI_Line2) != RESET)

  { 

                     if((key_up)&&(GetState_KEY(KEY3)==0))     

                     {    

                            key_up=0;

                            MyDelay_nms(50);

                            if(GetState_KEY(KEY3)==0)  

                       { 

                                   Key_Value =3;                      

                       }

                     }                                                     

//            }                  

    /* Clear the EXTI line 2 pending bit */

    EXTI_ClearITPendingBit(EXTI_Line2);

  } 

       key_up=1;

}

void EXTI3_IRQHandler(void)

{    

       Key_Value =0; 

       //判断中断管脚

  if(EXTI_GetITStatus(EXTI_Line3) != RESET)

  {   

                     if((key_up)&&(GetState_KEY(KEY4)==0))     

                     {    

                            key_up=0;

                            MyDelay_nms(50);

                            if(GetState_KEY(KEY4)==0)  

                       { 

                                   Key_Value =4;                      

                       }

                     }                                                     

//            }    

    /* Clear the EXTI line 3 pending bit */

    EXTI_ClearITPendingBit(EXTI_Line3);

  } 

       key_up=1;

}

 

 

以下是四个中断的优先级/* Enable the EXTI  Interrupt */

 

  //外部中断使用的NVIC配置

//  /* Configure one bit for preemption priority */

//  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

//  

NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  /* Enable the EXTI  Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  /* Enable the EXTI  Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

  /* Enable the EXTI  Interrupt */

  NVIC_InitStructure.NVIC_IRQChannel = EXTI3_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init(&NVIC_InitStructure);

 

正点原子

1,看不完全手册.
2,防抖没做好吧.

提刀上马

回复【2楼】正点原子:
---------------------------------
嗯~~
那请问下在mdk调试中怎么查看寄存器的值呢??？比如GPIOx->IDR~~

正点原子

看不完全手册.
只能软件仿真的时候查看.
硬件仿真的时候,无法查看.

提刀上马

回复【4楼】正点原子:
---------------------------------
哦，，
我在网上看到stm32有以下参数：
最大可以输出8mA，灌入20mA，但要保证所有进入芯片VDD的电流不能超过150mA，同样所有从VSS流出的电流也不能超过150mA。
请问原子哥以上参数合理吗？对48脚64脚100脚144脚的总电流怎么加以区分呢，

正点原子

回复【5楼】提刀上马:
---------------------------------
总电流就是不能超过150ma.