stm32通用定时器结构体函数+定时器实现led闪烁

 

tim.c

#include "stm32f10x.h"                  // Device header
#include "tim.h"

void tim_config(void)
{
		TIM_TimeBaseInitTypeDef	TIMinitStructure;//2.配置定时器时钟结构体
		NVIC_InitTypeDef NVICinitStructure;//3.开启定时器中断，配置中断结构体
	
		RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIM2,  ENABLE);//1.使能时钟 定时器时钟

	
		NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1);//中断服务组

	
		TIMinitStructure.TIM_ClockDivision     = TIM_CKD_DIV1; 
		TIMinitStructure.TIM_CounterMode       = TIM_CounterMode_Up;
		TIMinitStructure.TIM_Period            = 10000-1;	//Tout
		TIMinitStructure.TIM_Prescaler         = 7200-1;
		
		TIM_TimeBaseInit( TIM2, &TIMinitStructure);
		TIM_Cmd( TIM2,  ENABLE);  //要有定时器使能
		TIM_ITConfig( TIM2,  TIM_IT_Update,  ENABLE);
	
		NVICinitStructure.NVIC_IRQChannel = TIM2_IRQn;
		NVICinitStructure.NVIC_IRQChannelPreemptionPriority = 1;
		NVICinitStructure.NVIC_IRQChannelSubPriority = 1;
		NVICinitStructure.NVIC_IRQChannelCmd = ENABLE;
		NVIC_Init( &NVICinitStructure );

	
	
	
}

tim.h

#include "stm32f10x.h"                  // Device header

void tim_config(void);

main.c

#include "stm32f10x.h"                  // Device header
#include "usart.h"
#include "led.h"
#include "tim.h"

void delay(uint16_t time)
{
		uint16_t i = 0;
		while(time--)
		{
			i=12000;
			while(i--);
		}
}

int main(void)
{
		
		LED_Init();
		tim_config();
		GPIO_SetBits( GPIOC,  GPIO_Pin_13);

		while(1)
		{
			
			
			
		}
}
//4. 配置定时器中断服务函数
void TIM2_IRQHandler(void)
{
		 static uint16_t temp;
		 if(TIM_GetITStatus( TIM2,  TIM_IT_Update) != RESET) //判断定时器中断标志位是否被打开
		 {
				if(temp++ %2 == 1) //奇偶判断
				{
					 GPIO_ResetBits( GPIOC,  GPIO_Pin_13);

				}	
				else
				{
					 GPIO_SetBits( GPIOC,  GPIO_Pin_13);

				
				}
		 
		 }

 TIM_ClearITPendingBit( TIM2,  TIM_IT_Update);//最后要做定时器清除中断标志位


}