ST意法半导体中文论坛STM32F103 设置6个外部按键中断相互干扰

wallwall1111 发表于 2015-6-9 14:22:04

STM32F103 设置6个外部按键中断相互干扰

本帖最后由 wallwall1111 于 2015-6-9 17:35 编辑

如题。
我设置GPIOG 0-5一共6个按键做外部中断，5K电阻上拉到3.3V。现在的问题是按下其中一个按键时，除了该按键的中断响应以外，其他按键的中断有时候也被响应，求大师指导！

程序：
void EXTI_SetupNVIC(void)
{
   NVIC_InitTypeDef NVIC_InitStructure;

   NVIC_SetVectorTable(NVIC_VectTab_FLASH,0x0);

   /*Configureonebitforpreemptionpriority*/
   NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);// 1bitsforpre-emptionpriority //3bitsforsubpriority*/)
   /*EnabletheEXTI9_5Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI0_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);

//    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
   /*EnabletheEXTI15_10Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI1_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);


   /*EnabletheEXTI15_10Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI2_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);


   /*EnabletheEXTI15_10Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI3_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);


   /*EnabletheEXTI15_10Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI4_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);

   /*EnabletheEXTI15_10Interrupt*/
   NVIC_InitStructure.NVIC_IRQChannel=EXTI9_5_IRQn;
   NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;
   NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
   NVIC_Init(&NVIC_InitStructure);

}

void EXTI_SetupGPIO(void)
{
   GPIO_InitTypeDef GPIO_InitStructure;/* ¶¨ÒåÒ»¸öGPIO³õÊ¼»¯½á¹¹Ìå */
/*ConfigurePB9asinputfloating(EXTILine9)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_0;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

   /*ConfigurePC13asinputfloating(EXTILine13)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_1;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

   /*ConfigurePC13asinputfloating(EXTILine13)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_2;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

   /*ConfigurePC13asinputfloating(EXTILine13)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_3;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

   /*ConfigurePC13asinputfloating(EXTILine13)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_4;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

   /*ConfigurePC13asinputfloating(EXTILine13)*/
   GPIO_InitStructure.GPIO_Pin=GPIO_Pin_5;
   GPIO_InitStructure.GPIO_Mode=GPIO_Mode_IN_FLOATING;
   GPIO_Init(GPIOG,&GPIO_InitStructure);

}
void EXTI_Configure(void)
{
   EXTI_InitTypeDef EXTI_InitStructure;

   GPIO_EXTILineConfig(GPIO_PortSourceGPIOG,GPIO_PinSource0);
   EXTI_InitStructure.EXTI_Line=EXTI_Line0;
   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_PortSourceGPIOG,GPIO_PinSource1);
   EXTI_InitStructure.EXTI_Line=EXTI_Line1;
   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_PortSourceGPIOG,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);

   GPIO_EXTILineConfig(GPIO_PortSourceGPIOG,GPIO_PinSource3);
   EXTI_InitStructure.EXTI_Line=EXTI_Line3;
   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_PortSourceGPIOG,GPIO_PinSource4);
   EXTI_InitStructure.EXTI_Line=EXTI_Line4;
   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_PortSourceGPIOG,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);
}
void EXTI_SETUP(void)
{
   EXTI_Clock();
   EXTI_SetupNVIC();
   EXTI_SetupGPIO();
   EXTI_Configure();
}

wallwall1111 发表于 2015-6-9 14:48:09

请教是否有在线的高手可以解决啊！

wallwall1111 发表于 2015-6-9 17:36:14

大家来讨论一下啊！

jacobfeng 发表于 2015-6-9 20:06:50

上拉输入，不是浮空输入:lol

wallwall1111 发表于 2015-6-10 09:51:55

jacobfeng 发表于 2015-6-9 20:06
上拉输入，不是浮空输入

1.硬件上面，外部接了5K的上拉电阻。
2.软件上面我设置成上拉，同样也是没有效果。
3.我换了几个STM32，都有同样的问题。
求指导！

wallwall1111 发表于 2015-6-10 09:53:17

jacobfeng 发表于 2015-6-9 20:06
上拉输入，不是浮空输入

请教，这个问题是不是STM32的BUG啊！

jacobfeng 发表于 2015-6-10 10:41:23

你这里设置成浮空输入了，
不是设置上拉输入么？

安发表于 2015-6-10 10:55:26

楼主，在按下按键的时候，测一下其他引脚的波形。

黑皮男 发表于 2015-6-10 10:59:07

安发表于 2015-6-10 10:55
楼主，在按下按键的时候，测一下其他引脚的波形。

说的对，设置一下其他脚的电平

为什么是EEFOCUS小白 发表于 2015-6-10 17:29:51

wallwall1111 发表于 2015-6-10 09:53
请教，这个问题是不是STM32的BUG啊！

不要随口说人家BUG，自己好好找问题吧

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STM32F103 设置6个外部按键中断 相互干扰

STM32F103 设置6个外部按键中断相互干扰