各位楼主，本人新手，我在购买的光盘资料中没有关于STM32f4的编码器模式的配置例程，库函数版本，还望高人指点。谢谢！

liuwugengg

哇噻

void ENC_Init(void)   //TIM8 PC6,PC7
{
  TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;  
  TIM_ICInitTypeDef TIM_ICInitStructure;  
  GPIO_InitTypeDef GPIO_InitStructure;
  NVIC_InitTypeDef NVIC_InitStructure;

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_TIM8, ENABLE);
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, 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(GPIOC, &GPIO_InitStructure);

  GPIO_PinAFConfig(GPIOC,GPIO_PinSource6,GPIO_AF_TIM8);
  GPIO_PinAFConfig(GPIOC,GPIO_PinSource7,GPIO_AF_TIM8);

  /* Timer configuration in Encoder mode */

  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // No prescaling
  TIM_TimeBaseStructure.TIM_Period = 60000;
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;   
  TIM_TimeBaseInit(TIM8, &TIM_TimeBaseStructure);

  TIM_EncoderInterfaceConfig(TIM8, TIM_EncoderMode_TI12, TIM_ICPolarity_BothEdge, TIM_ICPolarity_BothEdge);
  TIM_ICStructInit(&TIM_ICInitStructure);
  TIM_ICInitStructure.TIM_ICFilter = 0;
  TIM_ICInit(TIM8, &TIM_ICInitStructure);
   
  TIM_Cmd(TIM8, ENABLE);
}

以上是STM32f407 配置TIM8_CHA,TIM8_CH2为编码器输入引脚，配置完用TIM_GetCounter(TIM8)读出计数器的值即可。

幻幻无穷

楼主，你使用的编码器，能精确地测速了吗？？

liuwugengg

学习了，谢谢！