关于F4的编码器

pjhyx · 发表于 2016-5-28 22:12:39

为什么我不连编码器也输出一些数值这是我代码

正点原子 · 发表于 2016-5-28 22:12:40

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pjhyx · 发表于 2016-5-28 22:13:39

void TIM3_Int_Init(u16 arr,u16 psc)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE); //Ê±ÖÓÊ¹ÄÜ

//¶¨Ê±Æ÷TIM3³õÊ¼»¯
TIM_TimeBaseStructure.TIM_Period = arr; //ÉèÖÃÔÚÏÂÒ»¸ö¸üÐÂÊÂ¼þ×°Èë»î¶¯µÄ×Ô¶¯ÖØ×°ÔØ¼Ä´æÆ÷ÖÜÆÚµÄÖµ
TIM_TimeBaseStructure.TIM_Prescaler =psc; //ÉèÖÃÓÃÀ´×÷ÎªTIMxÊ±ÖÓÆµÂÊ³ýÊýµÄÔ¤·ÖÆµÖµ
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); //¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õÊ¼»¯TIMxµÄÊ±¼ä»ùÊýµ¥Î»
// TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Trigger);//Ñ¡ÔñTIMx´ÓÄ£Ê½
TIM_ITConfig(TIM3,TIM_IT_Update,ENABLE ); //Ê¹ÄÜÖ¸¶¨µÄTIM3ÖÐ¶Ï,ÔÊÐí¸üÐÂÖÐ¶Ï

//ÖÐ¶ÏÓÅÏÈ¼¶NVICÉèÖÃ
NVIC_InitStructure.NVIC_IRQChannel = TIM3_IRQn;  //TIM3ÖÐ¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //ÏÈÕ¼ÓÅÏÈ¼¶3¼¶
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //´ÓÓÅÏÈ¼¶3¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQÍ¨µÀ±»Ê¹ÄÜ
NVIC_Init(&NVIC_InitStructure);  //³õÊ¼»¯NVIC¼Ä´æÆ÷

  //TIM3_Encoder_Write(65416) ;

TIM_Cmd(TIM3, ENABLE);  //Ê¹ÄÜTIMx
}

/**********TIM2_Encoder******/

void TIM2_Encoder_Init(u16 arr,u16 psc)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
NVIC_InitTypeDef NVIC_InitStructure;
TIM_ICInitTypeDef TIM_ICInitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;

RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE); //Ê±ÖÓÊ¹ÄÜ
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);

//GPIO_StructInit(&GPIO_InitStructure);
  /* Configure PC.06,07 as encoder input */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  GPIO_PinAFConfig(GPIOA,GPIO_PinSource6,GPIO_AF_TIM2);
  GPIO_PinAFConfig(GPIOA,GPIO_PinSource7,GPIO_AF_TIM2);

//¶¨Ê±Æ÷TIM2³õÊ¼»¯
TIM_TimeBaseStructure.TIM_Period = arr; //ÉèÖÃÔÚÏÂÒ»¸ö¸üÐÂÊÂ¼þ×°Èë»î¶¯µÄ×Ô¶¯ÖØ×°ÔØ¼Ä´æÆ÷ÖÜÆÚµÄÖµ
TIM_TimeBaseStructure.TIM_Prescaler =psc; //ÉèÖÃÓÃÀ´×÷ÎªTIMxÊ±ÖÓÆµÂÊ³ýÊýµÄÔ¤·ÖÆµÖµ
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(TIM2, &TIM_TimeBaseStructure); //¸ù¾ÝÖ¸¶¨µÄ²ÎÊý³õÊ¼»¯TIMxµÄÊ±¼ä»ùÊýµ¥Î»
//TIM_SetCounter(TIM3, 0xFF88);//ÉèÖÃTIMx×Ô¶¯ÖØ×°ÔØ¼Ä´æÆ÷Öµ

TIM_EncoderInterfaceConfig(TIM3, TIM_EncoderMode_TI12,
                              TIM_ICPolarity_Falling, TIM_ICPolarity_Falling);
TIM_ICStructInit(&TIM_ICInitStructure);
TIM_ICInitStructure.TIM_ICFilter = 6;
//TIM_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_Rising; //ÉÏÉýÑØ²¶»ñ
//TIM_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;    //ÅäÖÃÊäÈë·ÖÆµ,²»·ÖÆµ
TIM_ICInit(TIM2, &TIM_ICInitStructure);
  //TIM_SelectSlaveMode(TIM3, TIM_SlaveMode_Trigger);//Ñ¡ÔñTIMx´ÓÄ£Ê½
  TIM_ClearFlag(TIM2, TIM_FLAG_Update);
TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE ); //Ê¹ÄÜÖ¸¶¨µÄTIM3ÖÐ¶Ï,ÔÊÐí¸üÐÂÖÐ¶Ï
  //TIM2->CNT = 120;
//ÖÐ¶ÏÓÅÏÈ¼¶NVICÉèÖÃ
/*NVIC_InitStructure.NVIC_IRQChannel = TIM_Channel_1|TIM_Channel_2;  //TIM3ÖÐ¶Ï
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;  //ÏÈÕ¼ÓÅÏÈ¼¶3¼¶
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;  //´ÓÓÅÏÈ¼¶3¼¶
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; //IRQÍ¨µÀ±»Ê¹ÄÜ
  NVIC_Init(&NVIC_InitStructure);  //³õÊ¼»¯NVIC¼Ä´æÆ÷
  */
  //TIM3_Encoder_Write(65416) ;

TIM_Cmd(TIM2, ENABLE);  //Ê¹ÄÜTIMx
}
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