EXTI中断KEY1正常，KEY2不正常，请帮忙看一下是程序哪里有问题？

只看该作者 · 2020-4-2 11:48

/*bsp_exti.c文件*/
#include &quot;bsp_exti.h&quot;
static void EXIT_NVIC_Config(void)
{
  NVIC_InitTypeDef NVIC_InitStruct;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);

NVIC_InitStruct.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStruct);

NVIC_InitStruct.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_Init(&NVIC_InitStruct);
}
void EXIT_Key_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
  EXTI_InitTypeDef EXTI_InitStructure;

/*配置中断优先级*/
EXIT_NVIC_Config();

/*初始化KEY1要连接到EXTI的GPIO*/
RCC_APB2PeriphClockCmd(KEY1_INT_GPIO_CLK,ENABLE);

GPIO_InitStructure.GPIO_Pin = KEY1_INT_GPIO_PIN;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

GPIO_Init(KEY1_INT_GPIO_PORT, &GPIO_InitStructure);
/*初始化KEY2要连接到EXTI的GPIO*/
RCC_APB2PeriphClockCmd(KEY2_INT_GPIO_CLK,ENABLE);

GPIO_InitStructure.GPIO_Pin = KEY2_INT_GPIO_PIN;

GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;

  GPIO_Init(KEY2_INT_GPIO_PORT, &GPIO_InitStructure);

GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
  EXTI_InitStructure.EXTI_Line=EXTI_Line0;
EXTI_InitStructure.EXTI_LineCmd=ENABLE;
EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Rising;

  EXTI_Init(&EXTI_InitStructure);

  GPIO_EXTILineConfig(GPIO_PortSourceGPIOC, GPIO_PinSource13);
EXTI_InitStructure.EXTI_Line = EXTI_Line13;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;

EXTI_Init(&EXTI_InitStructure);
}
/*bsp_exti.h文件*/
#ifndef _BSP_EXTI_H
#define _BSP_EXTI_H
#include &quot;stm32f10x.h&quot;
/*KEY1有关的接口宏定义*/
#define KEY1_INT_GPIO_PORT    GPIOA
#define KEY1_INT_GPIO_CLK    RCC_APB2Periph_GPIOA
#define KEY1_INT_GPIO_PIN    GPIO_Pin_0

#define KEY2_INT_GPIO_PORT    GPIOC
#define KEY2_INT_GPIO_CLK    RCC_APB2Periph_GPIOC
#define KEY2_INT_GPIO_PIN    GPIO_Pin_13
void EXIT_Key_Config(void);
#endif /* _BSP_EXTI_H*/
/*stm32F10x_it.c文件*/
void SysTick_Handler(void)
{
}

void EXTI0_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line0)!=RESET)
  {
      LED1_TOGGLE;

  }
  EXTI_ClearITPendingBit(EXTI_Line0);
}
void EXTI15_10_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line13)!=RESET)
  {
      LED2_TOGGLE;

  }
  EXTI_ClearITPendingBit(EXTI_Line13);
}

程序运行KEY1正常，KEY2无响应，请问是为什么？

3万 · 2020-4-2 20:21

这是stm32吗？具体什么型号？是不是EXTI15_10_IRQn错了？

只看该作者 · 2020-4-3 09:53

NVIC_InitStruct.NVIC_IRQChannel=EXTI0_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;
NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;
NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStruct);

NVIC_InitStruct.NVIC_IRQChannel=EXTI15_10_IRQn;
NVIC_Init(&NVIC_InitStruct);

EXTI15_10_IRQn的 NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;没使能吧。
看看是不是这问题。

EXTI中断KEY1正常，KEY2不正常，请帮忙看一下是程序哪里有问题？

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