STM32F103的PC8,PC9输入捕捉功能

只看该作者 · 2017-6-19 09:11

本帖最后由 mochou 于 2017-6-19 09:12 编辑

硬件已经做好，输入捕获口接PC8,PC9。使用TIM8的CH3,和CH4，但是调试不能捕获到脉冲啊，大家帮看下，谢谢。
TIM_ICInitTypeDef  TIM8_ICInitStructure;

void TIM8_Cap_Init(u16 arr,u16 psc)
{
      GPIO_InitTypeDef GPIO_InitStructure;
      TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
         NVIC_InitTypeDef NVIC_InitStructure;

      RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);       //ê1ÄüTIM8ê±Öó
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);  //ê1ÄüGPIOAê±Öó

      GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_8;  //PA0 Çå3yÖ®Ç°éèÖÃ
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //PA0 êäèë
      GPIO_Init(GPIOC, &GPIO_InitStructure);
      GPIO_ResetBits(GPIOC,GPIO_Pin_8);                                              //PA0 ÏÂà-
      //GPIO_ResetBits(GPIOC,GPIO_Pin_9);                                              //PA0 ÏÂà-

      //3õê¼»ˉ¶¨ê±Æ÷5 TIM8
      TIM_TimeBaseStructure.TIM_Period = arr; //éè¶¨¼ÆêyÆ÷×Ô¶ˉÖØ×°Öμ
      TIM_TimeBaseStructure.TIM_Prescaler =psc;       //Ô¤·ÖÆμÆ÷
      TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //éèÖÃê±Öó·Ö¸î:TDTS = Tck_tim
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòéÏ¼ÆêyÄ￡ê½
      TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure); //¸ù¾YTIM_TimeBaseInitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉTIMxμÄê±¼ä»ùêyμ￥Î»

      //3õê¼»ˉTIM8êäèë2¶»ñ2Îêy
//       TIM8_ICInitStructure.TIM_ICMode = TIM_ICMode_ICAP;                //?????????
      TIM8_ICInitStructure.TIM_Channel = TIM_Channel_3; //CC1S=01       Ñ¡Ôñêäèë¶Ë IC1ó3éäμ½TI1éÏ
      TIM8_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising;       //éÏéyÑØ2¶»ñ
      TIM8_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //ó3éäμ½TI1éÏ
      TIM8_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;       //ÅäÖÃêäèë·ÖÆμ,2»·ÖÆμ
      TIM8_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 ÅäÖÃêäèëÂË2¨Æ÷ 2»ÂË2¨
      TIM_ICInit(TIM8, &TIM8_ICInitStructure);

      //ÖD¶Ï·Ö×é3õê¼»ˉ
      NVIC_InitStructure.NVIC_IRQChannel = TIM8_CC_IRQn;  //TIM3ÖD¶Ï
      NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;  //ÏèÕ¼óÅÏè¼¶2¼¶
      NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  //′óóÅÏè¼¶0¼¶
      NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQí¨μà±»ê1Äü
      NVIC_Init(&NVIC_InitStructure);  //¸ù¾YNVIC_InitStructÖDÖ¸¶¨μÄ2Îêy3õê¼»ˉíaéèNVIC¼Ä′æÆ÷

      TIM_ITConfig(TIM8,TIM_IT_Update|TIM_IT_CC3,ENABLE);//ÔêDí¸üDÂÖD¶Ï ,ÔêDíCC1IE2¶»ñÖD¶Ï

         TIM_Cmd(TIM8,ENABLE );       //ê1Äü¶¨ê±Æ÷5

}

u8  TIM8CH3_CAPTURE_STA=0;       //êäèë2¶»ñ×′ì¬
u16       TIM8CH3_CAPTURE_VAL;       //êäèë2¶»ñÖμ

//¶¨ê±Æ÷5ÖD¶Ï·tÎñ3ìDò
//void TIM8_IRQHandler(void)
void TIM8_CC_IRQHandler(void)
{

      if((TIM8CH3_CAPTURE_STA&0X80)==0)//»1Î′3é1|2¶»ñ
      {
            if (TIM_GetITStatus(TIM8, TIM_IT_Update) != RESET)

            {
                     if(TIM8CH3_CAPTURE_STA&0X40)//òÑ¾-2¶»ñμ½¸ßμçÆ½áË
                     {
                              if((TIM8CH3_CAPTURE_STA&0X3F)==0X3F)//¸ßμçÆ½ì«3¤áË
                              {
                                    TIM8CH3_CAPTURE_STA|=0X80;//±ê¼Ç3é1|2¶»ñáËò»′Î
                                    TIM8CH3_CAPTURE_VAL=0XFFFF;
                              }else TIM8CH3_CAPTURE_STA++;
                     }
            }
      if (TIM_GetITStatus(TIM8, TIM_IT_CC3) != RESET)//2¶»ñ1·￠éú2¶»ñêÂ¼t
            {
                     if(TIM8CH3_CAPTURE_STA&0X40)             //2¶»ñμ½ò»¸öÏÂ½μÑØ
                     {
                              TIM8CH3_CAPTURE_STA|=0X80;             //±ê¼Ç3é1|2¶»ñμ½ò»′ÎéÏéyÑØ
                              TIM8CH3_CAPTURE_VAL=TIM_GetCapture3(TIM8);
                                 TIM_OC3PolarityConfig(TIM8,TIM_ICPolarity_Rising); //CC1P=0 éèÖÃÎaéÏéyÑØ2¶»ñ
                     }else                                                                //»1Î′¿aê¼,μúò»′Î2¶»ñéÏéyÑØ
                     {
                              TIM8CH3_CAPTURE_STA=0;                      //Çå¿Õ
                              TIM8CH3_CAPTURE_VAL=0;
                              TIM_SetCounter(TIM8,0);
                              TIM8CH3_CAPTURE_STA|=0X40;             //±ê¼Ç2¶»ñμ½áËéÏéyÑØ
                        TIM_OC3PolarityConfig(TIM8,TIM_ICPolarity_Falling);             //CC1P=1 éèÖÃÎaÏÂ½μÑØ2¶»ñ
                     }
            }
}

TIM_ClearITPendingBit(TIM8, TIM_IT_CC3|TIM_IT_Update); //Çå3yÖD¶Ï±êÖ¾Î»

}
试了下用TIM3的REMAP也不行，

只看该作者 · 2017-6-19 09:20

TIM_ICInitTypeDef  TIM3_ICInitStructure;

void TIM3_Cap_Init(u16 arr,u16 psc)
{
GPIO_InitTypeDef GPIO_InitStructure;
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
   NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //Ê¹ÄÜTIM3Ê±ÖÓ

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC|RCC_APB2Periph_AFIO, ENABLE);  //Ê¹ÄÜGPIOAÊ±ÖÓ
GPIO_PinRemapConfig(GPIO_PartialRemap_TIM3, ENABLE); //Timer3²¿·ÖÖØÓ³Éä  TIM3_CH3->PC8
//GPIO_PinRemapConfig(GPIO_FullRemap_TIM3, ENABLE); //Timer3²¿·ÖÖØÓ³Éä  TIM3_CH3->PC8

GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_8;  //PA0 Çå³ýÖ®Ç°ÉèÖÃ
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPD; //PA0 ÊäÈë
GPIO_Init(GPIOC, &GPIO_InitStructure);
//GPIO_ResetBits(GPIOA,GPIO_Pin_0);    //PA0 ÏÂÀ

//³õÊ¼»¯¶¨Ê±Æ÷5 TIM3
TIM_TimeBaseStructure.TIM_Period = arr; //Éè¶¨¼ÆÊýÆ÷×Ô¶¯ÖØ×°Öµ
TIM_TimeBaseStructure.TIM_Prescaler =psc; //Ô¤·ÖÆµÆ÷
TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1; //ÉèÖÃÊ±ÖÓ·Ö¸î:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIMÏòÉÏ¼ÆÊýÄ£Ê½
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //¸ù¾ÝTIM_TimeBaseInitStructÖÐÖ¸¶¨µÄ²ÎÊý³õÊ¼»¯TIMxµÄÊ±¼ä»ùÊýµ¥Î»

//³õÊ¼»¯TIM3ÊäÈë²¶»ñ²ÎÊý
TIM3_ICInitStructure.TIM_Channel = TIM_Channel_3; //CC1S=01 Ñ¡ÔñÊäÈë¶Ë IC1Ó³Éäµ½TI1ÉÏ
    TIM3_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //ÉÏÉýÑØ²¶»ñ
    TIM3_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //Ó³Éäµ½TI1ÉÏ
    TIM3_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;    //ÅäÖÃÊäÈë·ÖÆµ,²»·ÖÆµ
    TIM3_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 ÅäÖÃÊäÈëÂË²¨Æ÷ ²»ÂË²¨
    TIM_ICInit(TIM3, &TIM3_ICInitStructure);

//ÖÐ¶Ï·Ö×é³õÊ¼»¯
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3ÖÐ¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 2;  //ÏÈÕ¼ÓÅÏÈ¼¶2¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;  //´ÓÓÅÏÈ¼¶0¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQÍ¨µÀ±»Ê¹ÄÜ
NVIC_Init(&NVIC_InitStructure);  //¸ù¾ÝNVIC_InitStructÖÐÖ¸¶¨µÄ²ÎÊý³õÊ¼»¯ÍâÉèNVIC¼Ä´æÆ÷

TIM_ITConfig(TIM3,TIM_IT_Update|TIM_IT_CC3,ENABLE);//ÔÊÐí¸üÐÂÖÐ¶Ï ,ÔÊÐíCC1IE²¶»ñÖÐ¶Ï

   TIM_Cmd(TIM3,ENABLE ); //Ê¹ÄÜ¶¨Ê±Æ÷5

}

u8  TIM3CH3_CAPTURE_STA=0; //ÊäÈë²¶»ñ×´Ì¬
u16 TIM3CH3_CAPTURE_VAL; //ÊäÈë²¶»ñÖµ

//¶¨Ê±Æ÷5ÖÐ¶Ï·þÎñ³ÌÐò
void TIM3_IRQHandler(void)
{

if((TIM3CH3_CAPTURE_STA&0X80)==0)//»¹Î´³É¹¦²¶»ñ
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET)

{
if(TIM3CH3_CAPTURE_STA&0X40)//ÒÑ¾²¶»ñµ½¸ßµçÆ½ÁË
{
if((TIM3CH3_CAPTURE_STA&0X3F)==0X3F)//¸ßµçÆ½Ì«³¤ÁË
{
TIM3CH3_CAPTURE_STA|=0X80;//±ê¼Ç³É¹¦²¶»ñÁËÒ»´Î
TIM3CH3_CAPTURE_VAL=0XFFFF;
}else TIM3CH3_CAPTURE_STA++;
}
}
LED1=!LED1;
if (TIM_GetITStatus(TIM3, TIM_IT_CC3) != RESET)//²¶»ñ1·¢Éú²¶»ñÊÂ¼þ
{
if(TIM3CH3_CAPTURE_STA&0X40) //²¶»ñµ½Ò»¸öÏÂ½µÑØ
{
TIM3CH3_CAPTURE_STA|=0X80; //±ê¼Ç³É¹¦²¶»ñµ½Ò»´ÎÉÏÉýÑØ
TIM3CH3_CAPTURE_VAL=TIM_GetCapture3(TIM3);
   TIM_OC3PolarityConfig(TIM3,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃÎªÉÏÉýÑØ²¶»ñ
}else    //»¹Î´¿ªÊ¼,µÚÒ»´Î²¶»ñÉÏÉýÑØ
{
TIM3CH3_CAPTURE_STA=0; //Çå¿Õ
TIM3CH3_CAPTURE_VAL=0;
     TIM_SetCounter(TIM3,0);
TIM3CH3_CAPTURE_STA|=0X40; //±ê¼Ç²¶»ñµ½ÁËÉÏÉýÑØ
   TIM_OC3PolarityConfig(TIM3,TIM_ICPolarity_Falling); //CC1P=1 ÉèÖÃÎªÏÂ½µÑØ²¶»ñ
}
}
}

TIM_ClearITPendingBit(TIM3, TIM_IT_CC3|TIM_IT_Update); //Çå³ýÖÐ¶Ï±êÖ¾Î»

}
上面是用TIM3的REMAP调试的程序，也不行啊，大侠们帮看下，谢谢。