以下为 TIM.C

#include "tim.h"
#include "led.h"
#include "usart.h"

void TIM6_Int_Init(u16 arr,u16 psc)
{
        TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM6,ENABLE); 

TIM_TimeBaseInitStructure.TIM_Period = arr; 
TIM_TimeBaseInitStructure.TIM_Prescaler=psc; 
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; 
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; 

TIM_TimeBaseInit(TIM6,&TIM_TimeBaseInitStructure);

TIM_ITConfig(TIM6,TIM_IT_Update,ENABLE); 
TIM_Cmd(TIM6,ENABLE); 

NVIC_InitStructure.NVIC_IRQChannel=TIM6_DAC_IRQn ; 
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x03; 
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

}
void TIM7_Int_Init(u16 arr,u16 psc)
{
        TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
        NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM7,ENABLE); 

TIM_TimeBaseInitStructure.TIM_Period = arr; 
TIM_TimeBaseInitStructure.TIM_Prescaler=psc; 
TIM_TimeBaseInitStructure.TIM_CounterMode=TIM_CounterMode_Up; 
TIM_TimeBaseInitStructure.TIM_ClockDivision=TIM_CKD_DIV1; 

TIM_TimeBaseInit(TIM7,&TIM_TimeBaseInitStructure);

TIM_ITConfig(TIM7,TIM_IT_Update,ENABLE); 
TIM_Cmd(TIM7,ENABLE); 

NVIC_InitStructure.NVIC_IRQChannel=TIM6_DAC_IRQn ; 
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0x03; 
NVIC_InitStructure.NVIC_IRQChannelSubPriority=0x03;
NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
NVIC_Init(&NVIC_InitStructure);

}


void TIM6_DAC_IRQHandler(void)
{
if(TIM_GetITStatus(TIM6,TIM_IT_Update)==SET) 
{
GPIO_ToggleBits(GPIOF,GPIO_Pin_9 );

TIM_ClearITPendingBit(TIM6,TIM_IT_Update); 

}

if(TIM_GetITStatus(TIM7,TIM_IT_Update)==SET) 
{
GPIO_ToggleBits(GPIOF,GPIO_Pin_10);

TIM_ClearITPendingBit(TIM7,TIM_IT_Update); 

}


}

以下为 tim.h

#ifndef _TIMER_H
#define _TIMER_H
#include "sys.h"


void TIM6_Int_Init(u16 arr,u16 psc);
void TIM7_Int_Init(u16 arr,u16 psc);

#endif

主函数进行初始化

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
LED_Init(); 
TIM6_Int_Init(5000-1,8400-1);
TIM7_Int_Init(10000-1,8400-1);