stm32按键中断控制led灯

好的，关于 stm32 按键中断控制 led 灯的问题，我可以为您提供以下的代码示例：

#include <stm32f10x.h>

void GPIO_Configuration(void);
void EXTI_Configuration(void);
void NVIC_Configuration(void);

int main(void)
{
  GPIO_Configuration();
  EXTI_Configuration();
  NVIC_Configuration();

  while(1){}
}

void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
}

void EXTI_Configuration(void)
{
  EXTI_InitTypeDef EXTI_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);

  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);

  EXTI_InitStructure.EXTI_Line = EXTI_Line0;
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure);
}

void NVIC_Configuration(void)
{
  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);

  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
}

void EXTI0_IRQHandler(void)
{
  if(EXTI_GetITStatus(EXTI_Line0) != RESET)
  {
    GPIO_WriteBit(GPIOC, GPIO_Pin_13, (BitAction)(1 - GPIO_ReadOutputDataBit(GPIOC, GPIO_Pin_13)));
    EXTI_ClearITPendingBit(EXTI_Line0);
  }
}

这段代码演示了如何使用 STM32 的 GPIO 和 EXTI 模块，实现按键中断控制 LED 灯的功能。当按下按键时，会触发 EXTI0 的中断，然后通过切换 LED 的电平来实现闪烁效果。