STM32 通用定时器的几种配置方式

//------------------------------------------------------------------------------

// 1、普通定时使用

#include"stm32f10x.h"

#include"time.h"

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

static void Time_Config( void )

{

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

  RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIMx, ENABLE );

  //TIM_DeInit(TIM2);

  TIM_TimeBaseInitStructure.TIM_Prescaler = (  -  );      //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period = (  -  );       //自动重装寄存器

  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;    //向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision = ;         //时钟分割,这里不涉及

#if 0

    TIM_TimeBaseInitStructure.TIM_RepetitionCounter;

    //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit( TIMx, &TIM_TimeBaseInitStructure );        //配置参数

  TIM_ClearITPendingBit( TIMx, TIM_IT_Update );          //清除中断标示位

  TIM_ITConfig( TIMx, TIM_IT_Update, ENABLE );           //中断配置

  TIM_Cmd( TIMx, ENABLE );                //启动定时器

}

void Time_Init( void )

{

  Time_Config( );       //定时器配置

  Time_NVIC_Config( );      //嵌套中断向量初始化

}

//------------------------------------------------------------------------------

// 2、PWM输出

#include"stm32f10x.h"

#include"time.h"

#if 1

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

#endif

void Time_OUT_PWM_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( TIMx_OUT_GPIO_RCC, ENABLE );

  GPIO_InitStructure.GPIO_Pin = TIMx_OUT_Pin;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;               //复用推免式输出

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( TIMx_OUT_Port, &GPIO_InitStructure );

}

static void Time_OUT_PWM_Config( void )

{

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIMx, ENABLE );        //开启时钟

  TIM_DeInit( TIM2 );

  TIM_TimeBaseInitStructure.TIM_Prescaler = (  -  );      //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period = (  -  ); //自动重装寄存器    PWM频率:72M/100/1000=720Hz

  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;    //向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision = ;         //时钟分频,这里不涉及

#ifdef Time1

    TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit( TIMx, &TIM_TimeBaseInitStructure );        //配置参数

  TIM_ClearITPendingBit( TIMx, TIM_IT_Update );          //清除中断标示位

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //PWM1模式  OCx电平根据ARR与CCRx比较结果发生反转

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道1

#ifdef Time1

    TIM_OCInitStructure.TIM_OutputNState =;

#endif

  TIM_OCInitStructure.TIM_Pulse = CCR1_VAL;         //占空比800/1000

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low;    //计数器值小于CCR值时输出高电平

#ifdef Time1

    TIM_OCInitStructure.TIM_OCNPolarity =;

    TIM_OCInitStructure.TIM_OCIdleState =;

    TIM_OCInitStructure.TIM_OCNIdleState =;

#endif

  TIM_OC1Init( TIMx, &TIM_OCInitStructure );

  TIM_OC1PreloadConfig( TIMx, TIM_OCPreload_Enable );         //使能CCR1预装载

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道2

  TIM_OCInitStructure.TIM_Pulse = CCR2_VAL;

  TIM_OC2Init( TIMx, &TIM_OCInitStructure );

  TIM_OC2PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道3

  TIM_OCInitStructure.TIM_Pulse = CCR3_VAL;

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;

  TIM_OC3Init( TIMx, &TIM_OCInitStructure );

  TIM_OC3PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道4

  TIM_OCInitStructure.TIM_Pulse = CCR4_VAL;

  TIM_OC4Init( TIMx, &TIM_OCInitStructure );

  TIM_OC4PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_ARRPreloadConfig( TIMx, ENABLE );            //开启ARR预装载

  TIM_Cmd( TIMx, ENABLE );                //启动定时器

}

void Time_OUT_PWM_Init( void )

{

  Time_OUT_PWM_GPIO_Config( );

  Time_OUT_PWM_Config( );       //定时器配置

}

//------------------------------------------------------------------------------

//  3、输出比较模式

#include"stm32f10x.h"

#include"time.h"

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

static void Time_OUT_PWM_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( TIMx_OUT_GPIO_RCC, ENABLE );

  GPIO_InitStructure.GPIO_Pin = TIMx_OUT_Pin;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;                    //复用推免式输出

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( TIMx_OUT_Port, &GPIO_InitStructure );

}

static void Time_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOD, ENABLE );

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;                    //通用推免式输出

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( GPIOD, &GPIO_InitStructure );

}

static void Time_OUT_PWM_Config( void )

{

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIMx, ENABLE );        //开启时钟

  TIM_DeInit( TIM2 );

  TIM_TimeBaseInitStructure.TIM_Prescaler = (  -  );      //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period = (  -  ); //自动重装寄存器    PWM频率:72M/100/1000=720Hz

  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;    //向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision = ;         //时钟分频,这里不涉及

#ifdef Time1

    TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit( TIMx, &TIM_TimeBaseInitStructure );        //配置参数

  TIM_ClearITPendingBit( TIMx, TIM_IT_Update );          //清除中断标示位

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Inactive;  //ARR与CCRx相同时强制OCxREF为低

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道1

#ifdef Time1

    TIM_OCInitStructure.TIM_OutputNState =;

#endif

  TIM_OCInitStructure.TIM_Pulse = CCR1_VAL;

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //OCx=!OCxREF    _High OCx=OCxREF

#ifdef Time1

    TIM_OCInitStructure.TIM_OCNPolarity =;

    TIM_OCInitStructure.TIM_OCIdleState =;

    TIM_OCInitStructure.TIM_OCNIdleState =;

#endif

  TIM_OC1Init( TIMx, &TIM_OCInitStructure );

  TIM_OC1PreloadConfig( TIMx, TIM_OCPreload_Enable );         //使能CCR1预装载

  TIM_ITConfig( TIMx, TIM_IT_CC1, ENABLE );            //使能OC1比较中断

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Active;    //ARR与CCRx相同时强制OCxREF为高

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道2

  TIM_OCInitStructure.TIM_Pulse = CCR2_VAL;

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_Low; //OCx=!OCxREF    _High OCx=OCxREF     

  TIM_OC2Init( TIMx, &TIM_OCInitStructure );

  TIM_OC2PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_ITConfig( TIMx, TIM_IT_CC2, ENABLE );

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_Timing;    //ARR与CCRx比较结果对OCxREF无效

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道3

  TIM_OCInitStructure.TIM_Pulse = CCR3_VAL;

  TIM_ITConfig( TIMx, TIM_IT_CC3, ENABLE );

  TIM_OC3Init( TIMx, &TIM_OCInitStructure );

  TIM_OC3PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //ARR与CCRx比较结果对OCxREF采用PWM1模式

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;      //输出使能通道4

  TIM_OCInitStructure.TIM_Pulse = CCR4_VAL;

  //TIM_ITConfig(TIMx,TIM_IT_CC4,ENABLE);             //PWM就没有必要设置中断 当然也可以在中断里面改变占空比

  TIM_OC4Init( TIMx, &TIM_OCInitStructure );

  TIM_OC4PreloadConfig( TIMx, TIM_OCPreload_Enable );

  TIM_ARRPreloadConfig( TIMx, ENABLE );            //开启ARR预装载

  TIM_Cmd( TIMx, ENABLE );                //启动定时器

}

void Time_OUT_PWM_Init( void )

{

  Time_OUT_PWM_GPIO_Config( );

  Time_GPIO_Config( );

  Time_NVIC_Config( );

  Time_OUT_PWM_Config( );       //定时器配置

}

//------------------------------------------------------------------------------

// 4、PWMI模式

#include"stm32f10x.h"

#include"time.h"

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

static void Time_IN_PWM_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( TIMx_IN_GPIO_RCC, ENABLE );

  GPIO_InitStructure.GPIO_Pin = TIMx_IN_Pin;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;             //浮空输入模式

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( TIMx_IN_Port, &GPIO_InitStructure );

}

static void Time_IN_PWM_Config( void )

{

#if 0

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

#endif

  TIM_ICInitTypeDef TIM_ICInitStructure;

  RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIMx, ENABLE );        //开启时钟

  TIM_DeInit( TIM2 );

#if 0

  TIM_TimeBaseInitStructure.TIM_Prescaler =(-);      //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period =(-);//自动重装寄存器    PWM频率:72M/100/1000=720Hz

  TIM_TimeBaseInitStructure.TIM_CounterMode =TIM_CounterMode_Up;//向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision =;//时钟分频,这里不涉及

#ifdef Time1

  TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit(TIMx,&TIM_TimeBaseInitStructure);        //配置参数

  TIM_ClearITPendingBit(TIMx,TIM_IT_Update);//清除中断标示位

#endif

  TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;

  TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿有效

  TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //TIM Input 1, 2, 3 or 4 is selected to be

                                                                  // connected to IC1, IC2, IC3 or IC4, respectively */

  TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;        //无预分频

  TIM_ICInitStructure.TIM_ICFilter = 0x0;       //无滤波

  TIM_ICInit( TIMx, &TIM_ICInitStructure );    //初始化PWM输入模式 //参见函数体与参考手册关于PWMI说明

  TIM_PWMIConfig( TIMx, &TIM_ICInitStructure );

  TIM_SelectInputTrigger( TIMx, TIM_TS_TI2FP2 ); //选择TI2FP2作为TIMx输入触发 一个信号来之后 启动定时器开始计数

  TIM_SelectSlaveMode( TIMx, TIM_SlaveMode_Reset ); //选择从模式控制器为复位模式,选中的TRGI上升沿重新初始化计数器

  //从模式控制器连接到TI1FP1 TI2FP2 只要两者有效为设置的电平,就会复位计数器 参见TIME结构图

  TIM_SelectMasterSlaveMode( TIMx, TIM_MasterSlaveMode_Enable ); //使能主从模式 ??????????????????

  TIM_Cmd( TIMx, ENABLE );

  TIM_ITConfig( TIMx, TIM_IT_CC2, ENABLE );

}

void Time_IN_PWM_Init( void )

{

  Time_IN_PWM_GPIO_Config( );

  Time_NVIC_Config( );

  Time_IN_PWM_Config( );       //定时器配置

}

//------------------------------------------------------------------------------

// 5、单脉冲模式

#include"stm32f10x.h"

#include"time.h"

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIMx_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

static Time_SinglePluse_IN_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( TIMx_IN_GPIO_RCC, ENABLE );

  GPIO_InitStructure.GPIO_Pin = TIMx_IN_Pin;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;             //浮空输入模式

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( TIMx_IN_Port, &GPIO_InitStructure );

}

static Time_SinglePluse_OUT_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( TIMx_OUT_GPIO_RCC, ENABLE );

  GPIO_InitStructure.GPIO_Pin = TIMx_OUT_Pin;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;                     //推免复用输出

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( TIMx_OUT_Port, &GPIO_InitStructure );

}

static void Time_SinglePluse_Config( void )

{

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

  TIM_ICInitTypeDef TIM_ICInitStructure;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_APB1PeriphClockCmd( RCC_APB1Periph_TIMx, ENABLE );        //开启时钟

  TIM_DeInit( TIM2 );

  TIM_TimeBaseInitStructure.TIM_Prescaler = ;              //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period = ;           //自动重装寄存器

  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;    //向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision = ;         //时钟分频,这里不涉及

#ifdef Time1

    TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit( TIMx, &TIM_TimeBaseInitStructure );        //配置参数

  TIM_ClearITPendingBit( TIMx, TIM_IT_Update );          //清除中断标示位

  TIM_ICStructInit( &TIM_ICInitStructure );

  TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;     //通道2为输入

  TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //上升沿有效

  TIM_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //TIM Input 1, 2, 3 or 4 is selected to be

                                                                  // connected to IC1, IC2, IC3 or IC4, respectively*/

  TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;        //无预分频

  TIM_ICInitStructure.TIM_ICFilter = 0x0;       //无滤波

  TIM_ICInit( TIMx, &TIM_ICInitStructure );           //初始化输入模式

  TIM_SelectOnePulseMode( TIMx, TIM_OPMode_Single ); //选择单脉冲模式  这样 下一次更新时间是停止计数器

  TIM_SelectInputTrigger( TIMx, TIM_TS_TI2FP2 ); //选择TI2FP2作为TIMx输入触发 一个信号来之后 启动定时器开始计数

  TIM_SelectSlaveMode( TIMx, TIM_SlaveMode_Trigger ); //选择从模式控制器为触发模式 其连接到了TI2FP2  让从模式控制器启动计数器

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM2; //输出模式选择为PWM模式2 用PWM2 向上计数时,CNT

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;     //使能通道

#ifdef Time1

    TIM_OCInitStructure.TIM_OutputNState =;

#endif

  TIM_OCInitStructure.TIM_Pulse = ;       //CCRx里面存放的值

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;   //OCREF与OC实际输出相同

#ifdef Time1

    TIM_OCInitStructure.TIM_OCNPolarity =;

    TIM_OCInitStructure.TIM_OCIdleState =;

    TIM_OCInitStructure.TIM_OCNIdleState =;

#endif

  TIM_OC1Init( TIMx, &TIM_OCInitStructure );           //使用通道1作为单脉冲的输出通道

  //TIM_Cmd(TIMx, ENABLE);                //使用TI2FP1来触发定时器,不需要软件启动定时器

}

void Time_SinglePluse_Init( void )

{

  Time_SinglePluse_IN_GPIO_Config( );   //配置time2的通道2为输入

  Time_SinglePluse_OUT_GPIO_Config( );  //配置time2的通道1为输出

  Time_NVIC_Config( );       //可以不用

  Time_SinglePluse_Config( );     //定时器配置

}

//------------------------------------------------------------------------------

// 6、定时器联级

#include"stm32f10x.h"

#include"time.h"

static Time_NVIC_Config( void )

{

  NVIC_InitTypeDef NVIC_InitStructure;

  NVIC_SetVectorTable( NVIC_VectTab_FLASH, 0x0000 );

  NVIC_PriorityGroupConfig( NVIC_PriorityGroup_1 );

  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;

  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelSubPriority = ;

  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

  NVIC_Init( &NVIC_InitStructure );

}

static Time_Connect_GPIO_Config( void )

{

  GPIO_InitTypeDef GPIO_InitStructure;

  RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB, ENABLE );

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_6; //time2 ch1 pin.0 time3 cha1 pin.6

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;         //推免复用输出

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

  GPIO_Init( GPIOA, &GPIO_InitStructure );

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;             //time4 ch1 pin.6

  GPIO_Init( GPIOB, &GPIO_InitStructure );

}

static void Time_Connect_Config( void )

{

  TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;

  TIM_OCInitTypeDef TIM_OCInitStructure;

  RCC_APB1PeriphClockCmd(

    RCC_APB1Periph_TIM2 | RCC_APB1Periph_TIM3 | RCC_APB1Periph_TIM4, ENABLE );

  TIM_DeInit( TIM2 );

  TIM_DeInit( TIM3 );

  TIM_DeInit( TIM4 );

  TIM_TimeBaseInitStructure.TIM_Prescaler = ;              //时钟分频系数

  TIM_TimeBaseInitStructure.TIM_Period = ;           //自动重装寄存器

  TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;    //向上计数模式

  TIM_TimeBaseInitStructure.TIM_ClockDivision = ;         //时钟分频,这里不涉及

#ifdef Time1                  //或者Time8

    TIM_TimeBaseInitStructure.TIM_RepetitionCounter; //This parameter is valid only for TIM1 and TIM8

#endif

  TIM_TimeBaseInit( TIM2, &TIM_TimeBaseInitStructure );        //配置参数

  TIM_ClearITPendingBit( TIM2, TIM_IT_Update );          //清除中断标示位

  TIM_TimeBaseInitStructure.TIM_Period = ;

  TIM_TimeBaseInit( TIM3, &TIM_TimeBaseInitStructure );

  TIM_ClearITPendingBit( TIM3, TIM_IT_Update );

  TIM_TimeBaseInitStructure.TIM_Period = ;

  TIM_TimeBaseInit( TIM4, &TIM_TimeBaseInitStructure );

  TIM_ClearITPendingBit( TIM4, TIM_IT_Update );

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //输出模式选择为PWM模式2 用PWM2 向上计数时,CNT

  TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;     //使能通道

  TIM_OCInitStructure.TIM_Pulse = ;           //CCRx里面存放的值

  TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;   //OCREF与OC实际输出相同

  TIM_OC1Init( TIM2, &TIM_OCInitStructure );           //使用通道1作为单脉冲的输出通道

  TIM_SelectMasterSlaveMode( TIM2, TIM_MasterSlaveMode_Enable );      //使能主从模式

  TIM_SelectOutputTrigger( TIM2, TIM_TRGOSource_Update );   //选择Time2的更新事件作为触发输出

  TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;

  TIM_OCInitStructure.TIM_Pulse = ;

  TIM_OC1Init( TIM3, &TIM_OCInitStructure );

  TIM_OC1Init( TIM4, &TIM_OCInitStructure );

  TIM_SelectSlaveMode( TIM3, TIM_SlaveMode_Gated );         //从模式的输入触发选择为门控模式

  TIM_SelectInputTrigger( TIM3, TIM_TS_ITR1 ); //从模式触发源选择为内部触发1?????????????为什么是内部触发1 不是0 2 3

  //原因:ITR0 ITR1 ITR2 ITR3 对应主模式的TIM2 TIM3 TIM4 TIM5

  TIM_SelectSlaveMode( TIM4, TIM_SlaveMode_Gated );

  TIM_SelectInputTrigger( TIM4, TIM_TS_ITR1 );

  TIM_Cmd( TIM2, ENABLE );

  TIM_Cmd( TIM3, ENABLE );

  TIM_Cmd( TIM4, ENABLE );

}

void Time_Connect_Init( void )

{

  Time_Connect_GPIO_Config( );

  Time_NVIC_Config( );      //可以不用

  Time_Connect_Config( );     //定时器配置

}

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