STMF103ZET6编码器模式TI12计数值最后一直为0啊各位大佬帮忙解决下下啊！！！！！！！！！！

Priasta · 发表于 2018-11-10 18:57:59

/************配置编码器模式**********、
void Encoder_Init_TIM2(void)
{
      TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
      TIM_ICInitTypeDef TIM_ICInitStructure;
      GPIO_InitTypeDef GPIO_InitStructure;

      GPIO_AFIODeInit();
      RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO,ENABLE);
      RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2,ENABLE);

      GPIO_PinRemapConfig(GPIO_Remap_SWJ_JTAGDisable , ENABLE); //??JTAG??,?PB3,PB4????IO???

      GPIO_PinRemapConfig(GPIO_FullRemap_TIM2,ENABLE);
      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_15;       //????
      GPIO_InitStructure.GPIO_Mode =GPIO_Mode_IN_FLOATING; //????
      GPIO_Init(GPIOA, &GPIO_InitStructure);                               //?????????GPIOA

      GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;       //????
      GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //????
      GPIO_Init(GPIOB, &GPIO_InitStructure);                               //?????????GPIOB

      TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
      TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // ????
      TIM_TimeBaseStructure.TIM_Period = ENCODER_TIM_PERIOD; //??????????
      TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//??????:???
      TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;////TIM????
      TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

      TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12, TIM_ICPolarity_BothEdge, TIM_ICPolarity_BothEdge);

      TIM_ICStructInit(&TIM_ICInitStructure);
      TIM_ICInitStructure.TIM_ICFilter = 10;
      TIM_ICInit(TIM2, &TIM_ICInitStructure);//??TIM_ICInitStruct???????????TIM
      TIM_ClearFlag(TIM2, TIM_FLAG_Update);//??TIM??????
      TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE); //?????????TIM??

      TIM_SetCounter(TIM2,0);
TIM2 -> CNT=0;
      TIM_Cmd(TIM2, ENABLE); //??????TIMx??
}

void TIM2_IRQHandler(void)
{

   if (TIM_GetITStatus(TIM2, TIM_IT_Update) != RESET) //¼ì2éÖ¸¶¨μÄTIMÖD¶Ï·￠éúóë·ñ:TIM ÖD¶ÏÔ′
{

}
   TIM_ClearITPendingBit(TIM2, TIM_IT_Update  );  //Çå3yTIMxμÄÖD¶Ï′y′|àíÎ»:TIM ÖD¶ÏÔ′
}
、
/*************用于定时输出计数值***************/
void TIM3_Int_Init(u16 arr,u16 psc)
{
TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //????

TIM_TimeBaseStructure.TIM_Period = arr; //????????
TIM_TimeBaseStructure.TIM_Prescaler =psc; //????
TIM_TimeBaseStructure.TIM_ClockDivision = 0; //??????:TDTS = Tck_tim
TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;  //TIM??????
TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure); //??????????TIMx

TIM_ITConfig(  TIM3,TIM_IT_Update  |  TIM_IT_Trigger,  ENABLE  );//??????TIM??

//??????
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3??
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //?????0?
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //????3?
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQ?????
NVIC_Init(&NVIC_InitStructure);  //??NVIC_InitStruct???????????NVIC???

TIM_Cmd(TIM3, ENABLE);  //??TIMx??

}

void TIM3_IRQHandler(void) //TIM3??
{
if (TIM_GetITStatus(TIM3, TIM_IT_Update) != RESET) //?????TIM??????:TIM ???
{

bmq_nmb=(short)TIM2 -> CNT;
TIM_ClearITPendingBit(TIM3, TIM_IT_Update  );  //??TIMx???????:TIM ???

}
}

最后在显示bmq_nmb的值