上传一个编码器的资料，有代码了哦

xiaodc88 提问时间：2015-2-2 11:25 /

本帖最后由 xiaodc88 于 2015-2-2 14:19 编辑

都说STM32可以接编码器的，手册中也有说明，但手册中没有编码器的资料，今天特来发一个，对于没接触过的人看了本资料后对编码器也能有所了解，用过的人直接飘过。。。

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2015-2-2 11:24 上传

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参考代码：这里将编码器挂在定时器2上，肯定可以用的哈
void TIM2_Configuration(void) //
{

  GPIO_InitTypeDef GPIO_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_ICInitTypeDef TIM_ICInitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO, ENABLE);
  /* TIM3 clock source enable */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
  /* Enable GPIOA, clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);

  GPIO_StructInit(&GPIO_InitStructure);
  /* Configure PA.06,07 as encoder input */

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;

  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    //
  GPIO_Init(GPIOA, &GPIO_InitStructure);


  /* Enable the TIM3 Update Interrupt */
  NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;    //
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;       //
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);

  /* Timer configuration in Encoder mode */
  TIM_DeInit(TIM2);
  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);

  TIM_TimeBaseStructure.TIM_Prescaler = 0x0;  //
  TIM_TimeBaseStructure.TIM_Period = (65535);  //
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
  TIM_TimeBaseInit(TIM2, &TIM_TimeBaseStructure);

//²ÎÊý£º¶¨Ê±Æ÷¡¢´¥·¢Ô´¡¢IC1¼«ÐÔ¡¢IC2¼«ÐÔ
  TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI12,
                           TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);

//²ÎÊý£º¶¨Ê±Æ÷¡¢´¥·¢Ô´¡¢IC1¼«ÐÔ¡¢IC2¼«ÐÔ
//  TIM_EncoderInterfaceConfig(TIM2, TIM_EncoderMode_TI1,
//                            TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);

  TIM_ICStructInit(&TIM_ICInitStructure);

  TIM_ICInitStructure.TIM_ICFilter = 8;    //
  TIM_ICInit(TIM2, &TIM_ICInitStructure);

  TIM_ICInitStructure.TIM_Channel = TIM_Channel_1; //
  TIM_ICInit(TIM2, &TIM_ICInitStructure);

TIM_ICInitStructure.TIM_Channel = TIM_Channel_2;//
  TIM_ICInit(TIM2, &TIM_ICInitStructure);

// Clear all pending interrupts
  TIM_ClearFlag(TIM2, TIM_FLAG_Update);
  TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);

  //Reset counter
  TIM2->CNT = 0;

  TIM_Cmd(TIM2, ENABLE);
}