高級(jí)定時(shí)器和普通定時(shí)器的區(qū)別（https://zhuanlan.zhihu.com/p/557896041）：
定時(shí)器1_定時(shí)中斷
TIM1是高級(jí)定時(shí)器，使用的時(shí)鐘總線是RCC_APB2Periph_TIM1，和普通定時(shí)器不一樣。
timer.c
#include "timer.h"
#include "led.h"
//初始化定時(shí)器為中斷觸發(fā)
void TIM1_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE); //時(shí)鐘使能
//定時(shí)器TIM1初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個(gè)更新事件裝入活動(dòng)的自動(dòng)重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來(lái)作為T(mén)IMx時(shí)鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設(shè)置時(shí)鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計(jì)數(shù)模式
TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //根據(jù)指定的參數(shù)初始化TIMx的時(shí)間基數(shù)單位
TIM_ITConfig(TIM1,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
//中斷優(yōu)先級(jí)NVIC設(shè)置
NVIC_InitStructure.NVIC_IRQChannel = TIM1_UP_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級(jí)0級(jí)
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級(jí)3級(jí)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM1, ENABLE); //使能TIM1
}
/* 定時(shí)器1中斷服務(wù)程序 */
void TIM1_UP_IRQHandler(void) /* TIM1中斷 */
{
if (TIM_GetITStatus(TIM1, TIM_IT_Update) != RESET) /* 檢查T(mén)IM1更新中斷發(fā)生與否 */
{
TIM_ClearITPendingBit(TIM1, TIM_IT_Update); /* 清除TIM1更新中斷標(biāo)志 */
LED0 = !LED0;
}
}
timer.h
#ifndef __TIMER_H
#define __TIMER_H
#include "sys.h"
void TIM1_Init(u16 arr,u16 psc);
#endif
調(diào)用
TIM1_Init(500 - 1, 7200 - 1);//50ms
定時(shí)器2_定時(shí)中斷
timer.c
#include "timer.h"
#include "led.h"
//初始化定時(shí)器為中斷觸發(fā)
void TIM2_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //時(shí)鐘使能
//定時(shí)器TIM2初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個(gè)更新事件裝入活動(dòng)的自動(dòng)重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來(lái)作為T(mén)IMx時(shí)鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設(shè)置時(shí)鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計(jì)數(shù)模式
TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //根據(jù)指定的參數(shù)初始化TIMx的時(shí)間基數(shù)單位
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
//中斷優(yōu)先級(jí)NVIC設(shè)置
NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級(jí)0級(jí)
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級(jí)3級(jí)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM2, ENABLE); //使能TIM2
}
/* 定時(shí)器2中斷服務(wù)程序 */
void TIM2_IRQHandler(void) /* TIM2中斷 */
{
if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) /* 檢查T(mén)IM2更新中斷發(fā)生與否 */
{
TIM_ClearITPendingBit(TIM2, TIM_IT_Update); /* 清除TIM2更新中斷標(biāo)志 */
LED0 = !LED0;
}
}
timer.h
#ifndef __TIMER_H
#define __TIMER_H
#include "sys.h"
void TIM2_Init(u16 arr,u16 psc);
#endif
調(diào)用
TIM2_Init(500 - 1, 7200 - 1);//50ms
定時(shí)器3_定時(shí)中斷
timer.c
#include "timer.h"
#include "led.h"
//初始化定時(shí)器為中斷觸發(fā)
void TIM3_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //時(shí)鐘使能
//定時(shí)器TIM3初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個(gè)更新事件裝入活動(dòng)的自動(dòng)重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來(lái)作為T(mén)IMx時(shí)鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設(shè)置時(shí)鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計(jì)數(shù)模式
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根據(jù)指定的參數(shù)初始化TIMx的時(shí)間基數(shù)單位
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
//中斷優(yōu)先級(jí)NVIC設(shè)置
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級(jí)0級(jí)
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級(jí)3級(jí)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM3, ENABLE); //使能TIM3
}
/* 定時(shí)器3中斷服務(wù)程序 */
void TIM3_IRQHandler(void) /* TIM3中斷 */
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) /* 檢查T(mén)IM3更新中斷發(fā)生與否 */
{
TIM_ClearITPendingBit(TIM3, TIM_IT_Update); /* 清除TIM3更新中斷標(biāo)志 */
LED0 = !LED0;
}
}
timer.h
#ifndef __TIMER_H
#define __TIMER_H
#include "sys.h"
void TI3_Init(u16 arr,u16 psc);
#endif
調(diào)用
TIM3_Init(500 - 1, 7200 - 1);//50ms
定時(shí)器4_定時(shí)中斷
timer.c
#include "timer.h"
#include "led.h"
//初始化定時(shí)器為中斷觸發(fā)
void TIM4_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE); //時(shí)鐘使能
//定時(shí)器TIM4初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個(gè)更新事件裝入活動(dòng)的自動(dòng)重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來(lái)作為T(mén)IMx時(shí)鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設(shè)置時(shí)鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計(jì)數(shù)模式
TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根據(jù)指定的參數(shù)初始化TIMx的時(shí)間基數(shù)單位
TIM_ITConfig(TIM4,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
//中斷優(yōu)先級(jí)NVIC設(shè)置
NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級(jí)0級(jí)
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級(jí)3級(jí)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM4, ENABLE); //使能TIM4
}
/* 定時(shí)器4中斷服務(wù)程序 */
void TIM4_IRQHandler(void) /* TIM4中斷 */
{
if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET) /* 檢查T(mén)IM4更新中斷發(fā)生與否 */
{
TIM_ClearITPendingBit(TIM4, TIM_IT_Update); /* 清除TIM4更新中斷標(biāo)志 */
LED0 = !LED0;
}
}
timer.h
#ifndef __TIMER_H
#define __TIMER_H
#include "sys.h"
void TIM4_Init(u16 arr,u16 psc);
#endif
調(diào)用
TIM4_Init(500 - 1, 7200 - 1);//50ms
定時(shí)器5_定時(shí)中斷
timer.c
#include "timer.h"
#include "led.h"
//初始化定時(shí)器為中斷觸發(fā)
void TIM5_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE); //時(shí)鐘使能
//定時(shí)器TIM5初始化
TIM_TimeBaseStructure.TIM_Period = arr; //設(shè)置在下一個(gè)更新事件裝入活動(dòng)的自動(dòng)重裝載寄存器周期的值
TIM_TimeBaseStructure.TIM_Prescaler =psc; //設(shè)置用來(lái)作為T(mén)IMx時(shí)鐘頻率除數(shù)的預(yù)分頻值
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //設(shè)置時(shí)鐘分割:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up; //TIM向上計(jì)數(shù)模式
TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); //根據(jù)指定的參數(shù)初始化TIMx的時(shí)間基數(shù)單位
TIM_ITConfig(TIM5,TIM_IT_Update,ENABLE ); //使能指定的TIM3中斷,允許更新中斷
//中斷優(yōu)先級(jí)NVIC設(shè)置
NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn; //TIM3中斷
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0; //先占優(yōu)先級(jí)0級(jí)
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3; //從優(yōu)先級(jí)3級(jí)
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ通道被使能
NVIC_Init(&NVIC_InitStructure); //初始化NVIC寄存器
TIM_Cmd(TIM5, ENABLE); //使能TIM5
}
/* 定時(shí)器5中斷服務(wù)程序 */
void TIM5_IRQHandler(void) /* TIM5中斷 */
{
if (TIM_GetITStatus(TIM5, TIM_IT_Update) != RESET) /* 檢查T(mén)IM5更新中斷發(fā)生與否 */
{
TIM_ClearITPendingBit(TIM5, TIM_IT_Update); /* 清除TIM5更新中斷標(biāo)志 */
LED0 = !LED0;
}
}
timer.h文章來(lái)源：http://www.zghlxwxcb.cn/news/detail-508944.html
#ifndef __TIMER_H
#define __TIMER_H
#include "sys.h"
void TIM5_Init(u16 arr,u16 psc);
#endif
調(diào)用文章來(lái)源地址http://www.zghlxwxcb.cn/news/detail-508944.html
TIM5_Init(500 - 1, 7200 - 1);//50ms
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