配置好的编码器程序在读取TIM5时，无法正常读取，代码如下

void Encoder_Init_TIM5(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;  
  TIM_ICInitTypeDef TIM_ICInitStructure;  
  GPIO_InitTypeDef GPIO_InitStructure;
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM5, ENABLE);//ʹÄܶ¨Ê±Æ÷µÄʱÖÓ
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);//ʹÄ&UumlA¶Ë¿ÚʱÖÓ

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0|GPIO_Pin_1; //¶Ë¿ÚÅäÖÃ
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING; //¸¡¿ÕÊäÈë
  GPIO_Init(GPIOE, &GPIO_InitStructure);           //¸ù¾ÝÉ趨²ÎÊý³õʼ»¯GPIOA
  
  TIM_TimeBaseStructInit(&TIM_TimeBaseStructure);
  TIM_TimeBaseStructure.TIM_Prescaler = 0x0; // Ô¤·ÖƵÆ÷
  TIM_TimeBaseStructure.TIM_Period = ENCODER_TIM_PERIOD; //É趨¼ÆÊýÆ÷×Ô¶¯ÖØ×°Öµ
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;//Ñ¡ÔñʱÖÓ·ÖƵ£º²»·ÖƵ
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;////TIMÏòÉϼÆÊý  
  TIM_TimeBaseInit(TIM5, &TIM_TimeBaseStructure);
  TIM_EncoderInterfaceConfig(TIM5, TIM_EncoderMode_TI12, TIM_ICPolarity_Rising, TIM_ICPolarity_Rising);//ʹÓñàÂëÆ÷ģʽ3
  TIM_ICStructInit(&TIM_ICInitStructure);
  TIM_ICInitStructure.TIM_ICFilter = 10;
  TIM_ICInit(TIM5, &TIM_ICInitStructure);
  TIM_ClearFlag(TIM5, TIM_FLAG_Update);//Çå³ýTIMµÄ¸üбê־λ
  TIM_ITConfig(TIM5, TIM_IT_Update, ENABLE);
  //Reset counter
  TIM_SetCounter(TIM5,0);
  TIM_Cmd(TIM5, ENABLE);
}



求助