使用PB12,PB13,PE14,PE15作为外部中断但PB12,PB13无法正常进入中断 - 平头弟

使用PB12,PB13,PE14,PE15作为外部中断但PB12,PB13无法正常进入中断

2019-07-14 17:44发布

站内问答 / STM32/STM8

3877 6

使用PB12,PB13,PE14,PE15作为外部中断，PE14，PE15响应正常，但PB12,PB13无法正常进入中断，代码如下，求指点。。

void EXti15_10_IRQHandler(void)
{

      //KEY_OK
      if(EXTI_GetITStatus(EXTI_Line14)==SET)
            {
                     IO_OutputData(0x00);
                     delay_us(10);
                     EXTI_ClearITPendingBit(EXTI_Line14);
            }

      //KEY_UP
      if(EXTI_GetITStatus(EXTI_Line15)==SET)
            {
                     IO_OutputData(0xff);
                     delay_us(10);
                     EXTI_ClearITPendingBit(EXTI_Line15);
            }
      //KEY_DOWN
      if(EXTI_GetITStatus(EXTI_Line12)==SET)
            {

                     IO_OutputData(0xff);
                     delay_us(10);
                     EXTI_ClearITPendingBit(EXTI_Line12);
            }

      //KEY_CANCEL
      if(EXTI_GetITStatus(EXTI_Line13)==SET)
            {
                     IO_OutputData(0x00);
                     delay_us(10);
                     EXTI_ClearITPendingBit(EXTI_Line13);
            }
}

----------------------------------------------------------------------
void NVIC_Configuration(void)
{
      NVIC_InitTypeDef NVIC_InitStructure;

      NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

      NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

      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 KEY_config(void)
{
      GPIO_InitTypeDef       GPIO_InitStructure;
      EXTI_InitTypeDef       EXTI_InitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
      //GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Pin = KEY_OK       |       KEY_UP;
      GPIO_Init(GPIOE, &GPIO_InitStructure);

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
      //GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_InitStructure.GPIO_Pin = KEY_DOWN       |       KEY_CANCEL;
      GPIO_Init(GPIOB, &GPIO_InitStructure);


      GPIO_EXTILineConfig(GPIO_PortSourceGPIOE, GPIO_PinSource14);
      EXTI_InitStructure.EXTI_Line = EXTI_Line14 ;
      EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
      EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
      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_Falling;
      EXTI_InitStructure.EXTI_LineCmd = ENABLE;
      EXTI_Init(&EXTI_InitStructure);

      GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource12);
      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);

      GPIO_EXTILineConfig(GPIO_PortSourceGPIOB, GPIO_PinSource13);
      EXTI_InitStructure.EXTI_Line = EXTI_Line13;
      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);
      EXTI_ClearITPendingBit(EXTI_Line13);
      EXTI_ClearITPendingBit(EXTI_Line14);
      EXTI_ClearITPendingBit(EXTI_Line15);

}

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6条回答

1楼-- · 2019-07-14 21:21

vuywsdfwf 发表于 2018-9-17 18:19
在EXTI_ClearITPendingBit(EXTI_Line12);之前加一句EXTI_ClearFlag(EXTI_Line12);试试

试了，没能解决问题，这两个函数是一样的吧

2楼-- · 2019-07-15 00:38

如果12，13可以进入一次的话，可能配置没啥问题，将你的IO_OutputData贴出来看看，是不是在里面修改了12，13管脚的属性了

3楼-- · 2019-07-15 03:07

asdyj 发表于 2018-9-17 18:36
如果12，13可以进入一次的话，可能配置没啥问题，将你的IO_OutputData贴出来看看，是不是在里面修改了12，13管脚的属性了

void IO_OutputData(u8 DATA)
{
u8 IO_E,IO_B_L,IO_B_H;
IO_E = ((DATA&0x01)<<1)|((DATA&0x02)>>1);
IO_B_H = ((DATA&0x04)>>1)|((DATA&0x08)>>3);
IO_B_L = ((DATA&0x10)<<2)|((DATA&0x40)>>2)|(DATA&0x20)|((DATA&0x80)>>4);
GPIOE->BSRR = (IO_E & 0xff) | (~IO_E & 0xff)<<16;
GPIOB->BSRR = (IO_B_L & 0xff) | (IO_B_H & 0xff)<<8 | (~IO_B_L & 0xff)<<16 | (~IO_B_H & 0xff)<<24;
}

求大神指点

4楼-- · 2019-07-15 08:32

精彩回答 2 元偷偷看……

5楼-- · 2019-07-15 14:11

asdyj 发表于 2018-9-17 18:36
如果12，13可以进入一次的话，可能配置没啥问题，将你的IO_OutputData贴出来看看，是不是在里面修改了12，13管脚的属性了

已解决，果然是 IO_OutputData的问题
void IO_OutputData(u8 DATA)
{
u8 IO_E,IO_B_L,IO_B_H;
IO_E = ((DATA&0x01)<<1)|((DATA&0x02)>>1);
IO_B_H = ((DATA&0x04)>>1)|((DATA&0x08)>>3);
IO_B_L = ((DATA&0x10)<<2)|((DATA&0x40)>>2)|(DATA&0x20)|((DATA&0x80)>>4);
GPIOE->BSRR = (IO_E & 0xff) | (~IO_E & 0xff)<<16;
GPIOB->BSRR = (IO_B_L & 0xff) | (~IO_B_L & 0xff)<<16 | (IO_B_H & 0x03)<<8 | (~IO_B_H & 0x03)<<24;

}

6楼-- · 2019-07-15 15:10

fuywyerwew 发表于 2018-9-17 19:21
已解决，果然是 IO_OutputData的问题
void IO_OutputData(u8 DATA)
{

兄弟，如果解决了问题，把我的回复设为最佳答案啊，这样咱俩都有金币得了

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