.定时器控制LED灯闪烁（定时器1）

最新推荐文章于 2024-10-28 11:26:40 发布

wangyuzhe123450

最新推荐文章于 2024-10-28 11:26:40 发布

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本文链接：https://blog.youkuaiyun.com/wangyuzhe123450/article/details/80426368

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该博客介绍了如何在STM32微控制器上使用定时器1来控制LED灯的闪烁。通过设置定时器的周期和预分频器，配合中断处理函数，实现了定时翻转LED的状态，从而达到闪烁效果。代码中详细配置了定时器1的初始化，包括时钟使能、中断配置和优先级设置。

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#include <sys.h>
#include <led.h>
#include <TIM1.h>

int main(void)
{
	NVIC_Configuration();
	Led_init();
	TIM1_Init();
	
	while(1)
	{
	
	}

}
void TIM1_UP_IRQHandler  (void)
{
	
	TIM_ClearFlag(TIM1,TIM_FLAG_Update);
	LED=~LED;

}
#include <led.h>
//PC13

void Led_init(void)
{
	GPIO_InitTypeDef GPIO_InitStructure;
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
	GPIO_Init(GPIOC, &GPIO_InitStructure);
}
#include <TIM1.h>



void TIM1_Init(void)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	//使能定时器1时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
	
	TIM_TimeBaseStructure.TIM_Period = (10000-1);//ARR
	TIM_TimeBaseStructure.TIM_Prescaler = (7200-1);//PSC
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TIM_TimeBaseInit(TIM1, & TIM_TimeBaseStructure);

//使能定时器1的中断
	TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
//配置定时器1的中断优先等级	
	NVIC_InitStructure.NVIC_IRQChannel =TIM1_UP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
//使能定时器1
	TIM_Cmd(TIM1,ENABLE);
	
}
#include <TIM1.h>



void TIM1_Init(void)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	//使能定时器1时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
	
	TIM_TimeBaseStructure.TIM_Period = (10000-1);//ARR
	TIM_TimeBaseStructure.TIM_Prescaler = (7200-1);//PSC
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TIM_TimeBaseInit(TIM1, & TIM_TimeBaseStructure);

//使能定时器1的中断
	TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
//配置定时器1的中断优先等级	
	NVIC_InitStructure.NVIC_IRQChannel =TIM1_UP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
//使能定时器1
	TIM_Cmd(TIM1,ENABLE);
	
}
#include <TIM1.h>



void TIM1_Init(void)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	//使能定时器1时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
	
	TIM_TimeBaseStructure.TIM_Period = (10000-1);//ARR
	TIM_TimeBaseStructure.TIM_Prescaler = (7200-1);//PSC
	TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TIM_TimeBaseInit(TIM1, & TIM_TimeBaseStructure);

//使能定时器1的中断
	TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE);
//配置定时器1的中断优先等级	
	NVIC_InitStructure.NVIC_IRQChannel =TIM1_UP_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
//使能定时器1
	TIM_Cmd(TIM1,ENABLE);
	
}
#include <TIM1.h>



void TIM1_Init(void)
{
	TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
	NVIC_InitTypeDef NVIC_InitStructure;
	//使能定时器1时钟
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1,ENABLE);
	
	TIM_TimeBaseStructure.TIM_Period = (10000-1);//ARR
	TIM_TimeBaseStructure.TIM_Presca

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