led.c

#include "led.h"

void LED_Config(void)

{

	GPIO_InitTypeDef GPIO_InitStruct;

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

	GPIO_InitStruct.GPIO_Mode=GPIO_Mode_Out_PP;

	GPIO_InitStruct.GPIO_Pin=GPIO_Pin_0;

	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;

	GPIO_Init(GPIOB, &GPIO_InitStruct);

}

void LED_Toggle(void)

{

	GPIOB->ODR ^= GPIO_Pin_0;

}

led.h

#ifndef __LED_H

#define __LED_H

#include "stm32f10x.h"

void LED_Config(void);

void LED_Toggle(void);

#endif

tim_timebase.c

#include "tim_timebase.h"

#include "led.h"

int a = 0;

static void NVIC_Config(void)

{

	NVIC_InitTypeDef NVIC_InitStruct;

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

	NVIC_InitStruct.NVIC_IRQChannel=TIM3_IRQn;

	NVIC_InitStruct.NVIC_IRQChannelCmd=ENABLE;

	NVIC_InitStruct.NVIC_IRQChannelPreemptionPriority=1;

	NVIC_InitStruct.NVIC_IRQChannelSubPriority=1;

	NVIC_Init(&NVIC_InitStruct);

}

void TIM3_Config(void)

{

	TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStruct;

	NVIC_Config();

	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);

	TIM_TimeBaseInitStruct.TIM_Period=71;

	TIM_TimeBaseInitStruct.TIM_Prescaler=1000;//1ms

	TIM_TimeBaseInit(TIM3, &TIM_TimeBaseInitStruct);

	TIM_ClearFlag(TIM3, TIM_FLAG_Update);

	TIM_ITConfig(TIM3, TIM_IT_Update, ENABLE);

	TIM_Cmd(TIM3, ENABLE);

}

void TIM3_IRQHandler(void)

{

	if(TIM_GetITStatus(TIM3, TIM_IT_Update)) a++;

	if(a == 1000)

	{

		LED_Toggle();

		a = 0;

	}

	TIM_ClearITPendingBit(TIM3, TIM_IT_Update);

}

tim_timebase.h

#ifndef __TIM_TIMEBASE_H

#define __TIM_TIMEBASE_H

#include "stm32f10x.h"

void TIM3_Config(void);

#endif

main.c

#include "stm32f10x.h"

#include "led.h"

#include "tim_timebase.h"

int main(void)

{

	LED_Config();

	TIM3_Config();

	while(1)

	{

	}

}

STM32基本定时器控制LED闪烁代码的相关教程结束。