用中断方式写一个stm32低电平led闪烁程序
时间: 2023-05-22 21:01:04 浏览: 52
以下是一个使用中断方式编写的STM32低电平LED闪烁程序的示例代码:
#include "stm32f10x.h"
void Delay(__IO uint32_t nCount);
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOC, &GPIO_InitStructure);
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);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x00;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
while (1)
{
GPIO_SetBits(GPIOC, GPIO_Pin_13);
Delay(0xFFFFF);
GPIO_ResetBits(GPIOC, GPIO_Pin_13);
Delay(0xFFFFF);
}
}
void Delay(__IO uint32_t nCount)
{
while (nCount--)
{
}
}
请注意,这只是一个示例代码,实际上您需要根据您的硬件和需求进行适当的修改。