单定时器多通道输入捕获的初始化函数是不是只要把通道那个地方写两个然后中断里边... -

标题: 单定时器多通道输入捕获的初始化函数是不是只要把通道那个地方写两个然后中断里边... [打印本页]

作者: 无敌小坏蛋 时间: 2018-9-17 19:43
标题: 单定时器多通道输入捕获的初始化函数是不是只要把通道那个地方写两个然后中断里边...
stm32单定时器多通道输入捕获是不是在初始化时  将通道配置哪里写两个其他地方写两个

void TIM2_Cap_Init(u16 arr,u16 psc)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
      NVIC_InitTypeDef NVIC_InitStructure;

      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB, ENABLE);

      GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_6;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOA,GPIO_Pin_6);


      GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_1;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD;
      GPIO_Init(GPIOB, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOB,GPIO_Pin_1);





      GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_1;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOA,GPIO_Pin_1);


      GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_5;
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
      GPIO_Init(GPIOA, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOA,GPIO_Pin_5);



      TIM_TimeBaseStructure.TIM_Period = arr;
      TIM_TimeBaseStructure.TIM_Prescaler =psc;
      TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
      TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);


      TIM3_ICInitStructure.TIM_Channel = TIM_Channel_1;
      TIM3_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
      TIM3_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
      TIM3_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
      TIM3_ICInitStructure.TIM_ICFilter = 0x00;
      TIM_ICInit(TIM3, &TIM3_ICInitStructure);

      TIM3_ICInitStructure.TIM_Channel = TIM_Channel_4;
      TIM3_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;
      TIM3_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI;
      TIM3_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;
      TIM3_ICInitStructure.TIM_ICFilter = 0x00;
      TIM_ICInit(TIM3, &TIM3_ICInitStructure);





      NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
      NVIC_Init(&NVIC_InitStructure);

      TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_CC1,ENABLE);
      TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_CC4,ENABLE);

  TIM_Cmd(TIM3,ENABLE );

}

然后中断函数里边  都写上就行

u8  TIM3CH1_CAPTURE_STA=0;
u16       TIM3CH1_CAPTURE_VAL;

u8  TIM3CH4_CAPTURE_STA=0;
u16       TIM3CH4_CAPTURE_VAL;

//?¨ê±?÷5?D??·t??3ìDò
void TIM3_IRQHandler(void)
{



      if((TIM3CH1_CAPTURE_STA&0X80)==0)
      {
            if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)

            {
                     if(TIM3CH1_CAPTURE_STA&0X40)
                     {
                              if((TIM3CH1_CAPTURE_STA&0X3F)==0X3F)
                              {
                                    TIM3CH1_CAPTURE_STA|=0X80;
                                    TIM3CH1_CAPTURE_VAL=0XFFFF;
                              }else TIM3CH1_CAPTURE_STA++;
                     }
            }
      if (TIM_GetITStatus(TIM3, TIM_IT_CC1) != RESET)
            {
                     if(TIM3CH1_CAPTURE_STA&0X40)
                     {
                              TIM3CH1_CAPTURE_STA|=0X80;
                              TIM3CH1_CAPTURE_VAL=TIM_GetCapture1(TIM3);
                                 TIM_OC1PolarityConfig(TIM3,TIM_ICPolarity_Rising);
                     }else
                     {
                              TIM3CH1_CAPTURE_STA=0;
                              TIM3CH1_CAPTURE_VAL=0;
                              TIM_SetCounter(TIM3,0);
                              TIM3CH1_CAPTURE_STA|=0X40;
                        TIM_OC1PolarityConfig(TIM3,TIM_ICPolarity_Falling);
                     }
            }
      }

TIM_ClearITPendingBit(TIM3, TIM_IT_CC1|TIM_IT_Update);


      if((TIM3CH4_CAPTURE_STA&0X80)==0)
      {
            if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)

            {
                     if(TIM3CH4_CAPTURE_STA&0X40)
                     {
                              if((TIM3CH4_CAPTURE_STA&0X3F)==0X3F)
                              {
                                    TIM3CH4_CAPTURE_STA|=0X80;
                                    TIM3CH4_CAPTURE_VAL=0XFFFF;
                              }else TIM3CH4_CAPTURE_STA++;
                     }
            }
      if (TIM_GetITStatus(TIM3, TIM_IT_CC4) != RESET)
            {
                     if(TIM3CH4_CAPTURE_STA&0X40)
                     {
                              TIM3CH4_CAPTURE_STA|=0X80;
                              TIM3CH4_CAPTURE_VAL=TIM_GetCapture1(TIM3);
                                 TIM_OC4PolarityConfig(TIM3,TIM_ICPolarity_Rising);
                     }else
                     {
                              TIM3CH4_CAPTURE_STA=0;
                              TIM3CH4_CAPTURE_VAL=0;
                              TIM_SetCounter(TIM3,0);
                              TIM3CH4_CAPTURE_STA|=0X40;
                        TIM_OC4PolarityConfig(TIM3,TIM_ICPolarity_Falling);
                     }
            }
      }

TIM_ClearITPendingBit(TIM3, TIM_IT_CC4|TIM_IT_Update);




}

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