基本框架

1. 配置定时器时钟

在 stm32f10x_rcc.h 头文件中查找相关函数函数

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);

2. 配置定时器结构体

在这里插入图片描述

在 stm32f10x_tim.h 头文件中查找相关函数函数

TIM_TimeBaseInitTypeDef timInitStructure;

//2.配置定时器结构体
timInitStructure.TIM_ClockDivision	=	TIM_CKD_DIV1; //tDTS = Tck_tim
timInitStructure.TIM_CounterMode	=	TIM_CounterMode_Up; //向上计数模式
timInitStructure.TIM_Period			=	10000-1; //自动重装载寄存器周期的值。
timInitStructure.TIM_Prescaler		=	7200-1; //定时器预分频设置
//配置成1秒闪烁

3. 开启定时器中断

在 stm32f10x_tim.h 头文件中查找相关函数函数

TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
TIM_Cmd(TIM2, ENABLE);

4. 配置中断结构体

在 misc.h 头文件中查找相关函数函数

TIM2_IRQn 在 stm32f10x.h 头文件中可以查找到

NVIC_InitTypeDef nvicInitStructure;

//4.配置中断结构体
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
		
nvicInitStructure.NVIC_IRQChannel					= TIM2_IRQn;
nvicInitStructure.NVIC_IRQChannelPreemptionPriority	= 1;
nvicInitStructure.NVIC_IRQChannelSubPriority		= 1;
nvicInitStructure.NVIC_IRQChannelCmd				= ENABLE;
		
NVIC_Init(&nvicInitStructure);

5. 搭建定时器中断服务函数

//5.搭建定时器中断服务函数
void TIM2_IRQHandler(void)
{
		static uint16_t t = 0;
		
		if( TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //发生中断
		{
				if(t++ %2 == 1) //t 为奇数时，LED亮 为偶数时，LED灭
				{
						GPIO_ResetBits(GPIOC, GPIO_Pin_13);
				}
				else
				{
						GPIO_SetBits(GPIOC, GPIO_Pin_13);
				}
		}
		
		TIM_ClearITPendingBit(TIM2, TIM_IT_Update); //清除定时中断标志
		
}

闪烁灯代码整合

tim.c

#include "tim.h"
#include "stm32f10x.h"

void tim_Init(void)
{
		TIM_TimeBaseInitTypeDef timInitStructure;
		NVIC_InitTypeDef 				nvicInitStructure;
	
		//1.配置定时器时钟
		RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
		
		//2.配置定时器结构体
		timInitStructure.TIM_ClockDivision	= TIM_CKD_DIV1;
		timInitStructure.TIM_CounterMode	= TIM_CounterMode_Up;
		timInitStructure.TIM_Period			= 10000-1;
		timInitStructure.TIM_Prescaler		= 7200-1;
		
		TIM_TimeBaseInit(TIM2, &timInitStructure);
		//3.开启定时器中断
		TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
		TIM_Cmd(TIM2, ENABLE);
		
		//4.配置中断结构体
		NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
		
		nvicInitStructure.NVIC_IRQChannel					= TIM2_IRQn;
		nvicInitStructure.NVIC_IRQChannelPreemptionPriority	= 1;
		nvicInitStructure.NVIC_IRQChannelSubPriority		= 1;
		nvicInitStructure.NVIC_IRQChannelCmd				= ENABLE;
		
		NVIC_Init(&nvicInitStructure);
		
		//5.搭建定时器中断服务函数
		
}

tim.h

#include "stm32f10x.h"

void tim_Init(void);

main.c

#include "stm32f10x.h"
#include "main.h"
#include "led.h"
#include "shake.h"
#include "relay.h"
#include "exti.h"
#include "usart.h"
#include "tim.h"

void delay(uint16_t time)
{
	uint16_t i=0;
	
	while(time--)
	{
		i=10000;
		while(i--);
	}
}

int  main()
{
		LED_Init();
		tim_Init();
		
		GPIO_SetBits(GPIOC, GPIO_Pin_13);
		
//		USARTSendByte(USART1, 'O');
//		USARTSendByte(USART1, 'K');
//		printf("Yinyuer is a pretty girl!");
		
		while(1)
		{
				
		}
}

//5.搭建定时器中断服务函数
void TIM2_IRQHandler(void)
{
		static uint16_t t = 0;
		
		if( TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET)
		{
				if(t++ %2 == 1)
				{
						GPIO_ResetBits(GPIOC, GPIO_Pin_13);
				}
				else
				{
						GPIO_SetBits(GPIOC, GPIO_Pin_13);
				}
		}
		
		TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
		
}