pwm配置与PWM输入捕获求助

hlphzy123456 · 发表于 2020-7-5 22:13:28

/*功能名称IM3_PWM_Init(u16 arr,u16 psc)
      描述    TIM3产生四路PWM
*/
void TIM3_PWM_Init(u16 arr,u16 psc)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      TIM_OCInitTypeDef  TIM_OCInitStructure;

      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟使能

  GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE); //Timer3全映射 GPIOC-> 6,7,8,9                                                                            //用于TIM3的CH2输出的PWM通过该LED显示

//设置该引脚为复用输出功能,输出TIM3 CH1 CH2 CH3 CH4 的PWM脉冲波形
      GPIO_InitStructure.GPIO_Pin =GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9; //初始化GPIO
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;  //复用推挽输出
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOC, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOC,GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_8 | GPIO_Pin_9);//默认电机使能端状态：不使能

      TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
      TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值  这里是72分频，那么时钟频率就是1M
      TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
      TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

      TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1; //选择定时器模式:TIM脉冲宽度调制模式1
      TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable; //比较输出使能
      TIM_OCInitStructure.TIM_Pulse = 0; //设置待装入捕获比较寄存器的脉冲值
      TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High; //输出极性:TIM输出比较极性高

      TIM_OC1Init(TIM3, &TIM_OCInitStructure);  //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
      TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIMx在CCR1上的预装载寄存器

      TIM_OC2Init(TIM3, &TIM_OCInitStructure);  //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
      TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIMx在CCR2上的预装载寄存器

      TIM_OC3Init(TIM3, &TIM_OCInitStructure);  //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
      TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIMx在CCR3上的预装载寄存器

      TIM_OC4Init(TIM3, &TIM_OCInitStructure);  //根据TIM_OCInitStruct中指定的参数初始化外设TIMx
      TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);  //使能TIMx在CCR4上的预装载寄存器

      TIM_ARRPreloadConfig(TIM3, ENABLE); //使能TIMx在ARR上的预装载寄存器

      TIM_Cmd(TIM3, ENABLE);  //使能TIMx外设

}

/*功能名称TIM4_PWMINPUT_INIT(u16 arr,u16 psc)
  描述    PWM输入初始化*/

void TIM4_PWMINPUT_INIT(u16 arr,u16 psc)
{

      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;       //TIM的初始化结构体
      NVIC_InitTypeDef NVIC_InitStructure;                      //中断配置
      TIM_ICInitTypeDef  TIM4_ICInitStructure;                //TIM4  PWM配置结构体
      GPIO_InitTypeDef GPIO_InitStructure;                      //IO口配置结构体

      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM4, ENABLE);    //Open TIM4 clock
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);  //open gpioB clock

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;          //GPIO 7
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;       //上拉输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
      TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
      TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
      TIM_TimeBaseInit(TIM4, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

      /*配置中断优先级*/
      NVIC_InitStructure.NVIC_IRQChannel = TIM4_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  TIM4_ICInitStructure.TIM_Channel = TIM_Channel_2;
  TIM4_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
  TIM4_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
  TIM4_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
  TIM4_ICInitStructure.TIM_ICFilter = 0x3; //Filter:过滤

  TIM_PWMIConfig(TIM4, &TIM4_ICInitStructure);    //PWM输入配置
  TIM_SelectInputTrigger(TIM4, TIM_TS_TI2FP2);    //选择有效输入端
  TIM_SelectSlaveMode(TIM4, TIM_SlaveMode_Reset);  //配置为主从复位模式
  TIM_SelectMasterSlaveMode(TIM4, TIM_MasterSlaveMode_Enable);//启动定时器的被动触发
  TIM_ITConfig(TIM4, TIM_IT_CC2|TIM_IT_Update, ENABLE);       //中断配置
  TIM_ClearITPendingBit(TIM4, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
  TIM_Cmd(TIM4, ENABLE);
}

void TIM4_IRQHandler(void)
{

            if (TIM_GetITStatus(TIM4, TIM_IT_CC2) != RESET)//捕获1发生捕获事件
                     {
                              duty_TIM4 = TIM_GetCapture1(TIM4);       //采集占空比
            if  (TIM_GetCapture2(TIM4)>600)       period_TIM4       =       TIM_GetCapture2(TIM4);//简单的处理
                              CollectFlag_TIM4 = 0;
      }
            TIM_ClearITPendingBit(TIM4, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
}

/*功能名称TIM1_PWMINPUT_INIT(u16 arr,u16 psc)
  描述    PWM输入初始化*/

void TIM1_PWMINPUT_INIT(u16 arr,u16 psc)
{

      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;       //TIM的初始化结构体
      NVIC_InitTypeDef NVIC_InitStructure;                      //中断配置
      TIM_ICInitTypeDef  TIM1_ICInitStructure;                //PWM配置结构体
      GPIO_InitTypeDef GPIO_InitStructure;                      //IO口配置结构体

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM1, ENABLE);    //Open TIM1 clock
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);  //open gpioE clock
GPIO_PinRemapConfig(GPIO_FullRemap_TIM1, ENABLE); //Timer1完全重映射  TIM1_CH2->PE11
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;          //GPIO 11
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;       //上拉输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOE, &GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
      TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
      TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
      TIM_TimeBaseInit(TIM1, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

      /*配置中断优先级*/
  NVIC_InitStructure.NVIC_IRQChannel =  TIM1_CC_IRQn; //TIM1捕获中断
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  TIM1_ICInitStructure.TIM_Channel = TIM_Channel_2;
  TIM1_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
  TIM1_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
  TIM1_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
  TIM1_ICInitStructure.TIM_ICFilter = 0x03; //Filter:过滤

  TIM_PWMIConfig(TIM1, &TIM1_ICInitStructure);    //PWM输入配置
  TIM_SelectInputTrigger(TIM1, TIM_TS_TI2FP2);    //选择有效输入端
  TIM_SelectSlaveMode(TIM1, TIM_SlaveMode_Reset);  //配置为主从复位模式
  TIM_SelectMasterSlaveMode(TIM1, TIM_MasterSlaveMode_Enable);//启动定时器的被动触发
// TIM_ITConfig(TIM1, TIM_IT_CC2|TIM_IT_Update, ENABLE);       //中断配置
  TIM_ITConfig(TIM1, TIM_IT_CC2, ENABLE); //通道2 捕获中断打开
  //TIM_ClearITPendingBit(TIM1, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
  TIM_Cmd(TIM1, ENABLE);
}

void TIM1_CC_IRQHandler(void)
{

      {
            if (TIM_GetITStatus(TIM1, TIM_IT_CC2) != RESET)//捕获1发生捕获事件
                     {
                              duty_TIM1 = TIM_GetCapture1(TIM1);       //采集占空比
                        if  (TIM_GetCapture2(TIM1)>600)       period_TIM1       =       TIM_GetCapture2(TIM1);
                              CollectFlag_TIM1 = 0;
                     }
      }
            TIM_ClearITPendingBit(TIM1, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
}

/*功能名称TIM2_PWMINPUT_INIT(u16 arr,u16 psc)
  描述    PWM输入初始化*/

void TIM2_PWMINPUT_INIT(u16 arr,u16 psc)
{

      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;       //TIM的初始化结构体
      NVIC_InitTypeDef NVIC_InitStructure;                      //中断配置
      TIM_ICInitTypeDef  TIM2_ICInitStructure;                //TIM2  PWM配置结构体
      GPIO_InitTypeDef GPIO_InitStructure;                      //IO口配置结构体

      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);    //Open TIM2 clock
// RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);  //open gpioB clock
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB  | RCC_APB2Periph_AFIO, ENABLE);  //使能GPIO外设和AFIO复用功能模块时钟
GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable,ENABLE);       //关闭JTAG
      GPIO_PinRemapConfig(GPIO_FullRemap_TIM2, ENABLE); //Timer2完全重映射  TIM2_CH2->PB3

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;          //GPIO 3
      GPIO_InitStructure.GPIO_Mode =  GPIO_Mode_IPU;       //浮空输入上拉输入
      GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
      GPIO_Init(GPIOB, &GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
      TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
      TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
      TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

      /*配置中断优先级*/
      NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  TIM2_ICInitStructure.TIM_Channel = TIM_Channel_2;
  TIM2_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
  TIM2_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
  TIM2_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
  TIM2_ICInitStructure.TIM_ICFilter = 0x3; //Filter:过滤

  TIM_PWMIConfig(TIM2, &TIM2_ICInitStructure);    //PWM输入配置
  TIM_SelectInputTrigger(TIM2, TIM_TS_TI2FP2);    //选择有效输入端
  TIM_SelectSlaveMode(TIM2, TIM_SlaveMode_Reset);  //配置为主从复位模式
  TIM_SelectMasterSlaveMode(TIM2, TIM_MasterSlaveMode_Enable);//启动定时器的被动触发
  TIM_ITConfig(TIM2, TIM_IT_CC2|TIM_IT_Update, ENABLE);       //中断配置
  TIM_ClearITPendingBit(TIM2, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
  TIM_Cmd(TIM2, ENABLE);
}

void TIM2_IRQHandler(void)
{
      {
            if (TIM_GetITStatus(TIM2, TIM_IT_CC2) != RESET)//捕获1发生捕获事件
                     {
                              duty_TIM2 = TIM_GetCapture1(TIM2);       //采集占空比
                        if  (TIM_GetCapture2(TIM2)>600)       period_TIM2       =       TIM_GetCapture2(TIM2);
                              CollectFlag_TIM2 = 0;
                     }
      }
            TIM_ClearITPendingBit(TIM2, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
}

/*功能名称TIM5_PWMINPUT_INIT(u16 arr,u16 psc)
  描述    PWM输入初始化*/

void TIM5_PWMINPUT_INIT(u16 arr,u16 psc)
{

      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;       //TIM的初始化结构体
      NVIC_InitTypeDef NVIC_InitStructure;                      //中断配置
      TIM_ICInitTypeDef  TIM5_ICInitStructure;                //TIM4  PWM配置结构体
      GPIO_InitTypeDef GPIO_InitStructure;                      //IO口配置结构体

      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);    //Open TIM4 clock
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);  //open gpioB clock

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1;          //GPIO 1
  GPIO_InitStructure.GPIO_Mode =  GPIO_Mode_IPU;       //浮空输入上拉输入
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

      TIM_TimeBaseStructure.TIM_Period = arr; //设置在下一个更新事件装入活动的自动重装载寄存器周期的值
      TIM_TimeBaseStructure.TIM_Prescaler =psc; //设置用来作为TIMx时钟频率除数的预分频值
      TIM_TimeBaseStructure.TIM_ClockDivision = 0; //设置时钟分割:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM向上计数模式
      TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure); //根据TIM_TimeBaseInitStruct中指定的参数初始化TIMx的时间基数单位

      /*配置中断优先级*/
      NVIC_InitStructure.NVIC_IRQChannel = TIM5_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  TIM5_ICInitStructure.TIM_Channel = TIM_Channel_2;
  TIM5_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
  TIM5_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
  TIM5_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
  TIM5_ICInitStructure.TIM_ICFilter = 0x3; //Filter:过滤

  TIM_PWMIConfig(TIM5, &TIM5_ICInitStructure);    //PWM输入配置
  TIM_SelectInputTrigger(TIM5, TIM_TS_TI2FP2);    //选择有效输入端
  TIM_SelectSlaveMode(TIM5, TIM_SlaveMode_Reset);  //配置为主从复位模式
  TIM_SelectMasterSlaveMode(TIM5, TIM_MasterSlaveMode_Enable);//启动定时器的被动触发
  TIM_ITConfig(TIM5, TIM_IT_CC2|TIM_IT_Update, ENABLE);       //中断配置
  TIM_ClearITPendingBit(TIM5, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
  TIM_Cmd(TIM5, ENABLE);
}

void TIM5_IRQHandler(void)
{
      {
            if (TIM_GetITStatus(TIM5, TIM_IT_CC2) != RESET)//捕获1发生捕获事件
                     {
                              duty_TIM5 = TIM_GetCapture1(TIM5);       //采集占空比
                     if  (TIM_GetCapture2(TIM5)>600)       period_TIM5       =       TIM_GetCapture2(TIM5);
                              CollectFlag_TIM5 = 0;
                     }
      }
            TIM_ClearITPendingBit(TIM5, TIM_IT_CC2|TIM_IT_Update); //清除中断标志位
}

各位高手谁能帮我看下，上面的程序啊？我理解的是设置TIM3输出4路方波，脚分别为PC6,7,8,9。重点输入捕获脚PB7是否捕获测量的是PC6的占空比；PE11是否捕获测量的是PC7的占空比，PB3是否捕获测量的是PC8的占空比，PA1是否捕获测量的是PC9的占空比.这个问题困扰我好几天了，哪位大侠帮看下啊

peng1554 · 发表于 2020-7-6 11:36:38

你那边测量PC6,7,8,9能不能PWM输出？

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pwm配置与PWM输入捕获求助

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