STM32定时器配置

#include"stm32f10x.h"

#include"misc.h"

voidRCC_Configuration(void);

voidNVIC_Configuration(void);

voidGPIO_Configuration(void);

voidTIM3_Configuration(void);

intmain(void)

{

RCC_Configuration();

NVIC_Configuration();

GPIO_Configuration();

TIM3_Configuration();

TIM_ClearFlag(TIM3,TIM_FLAG_Update);

TIM_ARRPreloadConfig(TIM3,DISABLE);

TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE);

TIM_Cmd(TIM3,ENABLE);

while(1){

;

}

}

voidTIM3_Configuration(void)

{

TIM_TimeBaseInitTypeDefTIM_TimeBaseStructure;

TIM_TimeBaseStructure.TIM_Period=9999;

TIM_TimeBaseStructure.TIM_Prescaler=7199;

TIM_TimeBaseStructure.TIM_ClockDivision=0;

TIM_TimeBaseStructure.TIM_CounterMode=TIM_CounterMode_Up;

TIM_TimeBaseInit(TIM3,&TIM_TimeBaseStructure);

}

voidRCC_Configuration(void)

{

SystemInit();

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3,ENABLE);

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC,ENABLE);

}

voidNVIC_Configuration(void)

{

NVIC_InitTypeDefNVIC_InitStructure;

NVIC_InitStructure.NVIC_IRQChannel=TIM3_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=0;

NVIC_InitStructure.NVIC_IRQChannelSubPriority=0;

NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;

NVIC_Init(&NVIC_InitStructure);

}

voidGPIO_Configuration(void)

{

GPIO_InitTypeDefGPIO_InitStructure;

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_7;

GPIO_InitStructure.GPIO_Mode=GPIO_Mode_Out_PP;

GPIO_InitStructure.GPIO_Speed=GPIO_Speed_50MHz;

GPIO_Init(GPIOC,&GPIO_InitStructure);

}

#include"stm32f10x_it.h"

voidTIM3_IRQHandler(void)

{

if(TIM_GetITStatus(TIM3,TIM_IT_Update)!=RESET){

TIM_ClearITPendingBit(TIM3,TIM_IT_Update);

GPIO_WriteBit(GPIOC,GPIO_Pin_7,(BitAction)(1-GPIO_ReadOutputDataBit(GPIOC,GPIO_Pin_7)));

}

}

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