void CoderInit(void)
{
  TIM_TimeBaseInitTypeDef  TIM_TimeBaseStructure;
  TIM_ICInitTypeDef TIM3_ICInitStructure;


  GPIO_InitTypeDef GPIO_InitStructure;
// NVIC_InitTypeDef NVIC_InitStructure;

  /* 定时器时钟使能 */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM3, ENABLE);
  /* 管脚时钟使能 */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_GPIOC, ENABLE);

  GPIO_StructInit(&GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
       
        GPIO_StructInit(&GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4 | GPIO_Pin_5;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
  GPIO_Init(GPIOC, &GPIO_InitStructure);





  TIM_TimeBaseStructure.TIM_Prescaler = 0;  // No prescaling
  TIM_TimeBaseStructure.TIM_Period = 1000;  
  TIM_TimeBaseStructure.TIM_ClockDivision = TIM_CKD_DIV1;
  TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;   
  TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);

        //初始化TIM3输入捕获参数
          TIM3_ICInitStructure.TIM_Channel = TIM_Channel_3; //CC1S=01         选择输入端 IC1映射到TI1上
          TIM3_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_BothEdge;        //双边沿沿捕获
          TIM3_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
          TIM3_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;         //配置输入分频,不分频
          TIM3_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 配置输入滤波器 不滤波
          TIM_ICInit(TIM3, &TIM3_ICInitStructure);
               
                TIM3_ICInitStructure.TIM_Channel = TIM_Channel_4; //CC1S=01         选择输入端 IC1映射到TI1上
          TIM3_ICInitStructure.TIM_ICPolarity = TIM_ICPolarity_BothEdge;        //双边沿沿捕获
          TIM3_ICInitStructure.TIM_ICSelection = TIM_ICSelection_DirectTI; //映射到TI1上
          TIM3_ICInitStructure.TIM_ICPrescaler = TIM_ICPSC_DIV1;         //配置输入分频,不分频
          TIM3_ICInitStructure.TIM_ICFilter = 0x00;//IC1F=0000 配置输入滤波器 不滤波
          TIM_ICInit(TIM3, &TIM3_ICInitStructure);
               
                TIM3->CNT = 0;

          TIM_Cmd(TIM3, ENABLE);   //启动TIM4定时器

}

还有读出计数器的值就是调用TIM_GetCounter(TIM3)这个函数么？？


求解答