各位大佬好！      我按照GD32F30x的标准库配置了GD32F305VG 的timer0定时器并开启了输入捕获功能，配置代码如下：
void timer_config(void)
{
/* -----------------------------------------------------------------------
    timer_parameter_struct timer_initpara;
    timer_ic_parameter_struct timer_icinitpara;

    rcu_periph_clock_enable(RCU_TIMER0);

    timer_deinit(TIMER0);

    /*NVIC config*/
    nvic_irq_enable(TIMER0_UP_TIMER9_IRQn, 1, 1);
    nvic_irq_enable(TIMER0_Channel_IRQn, 1, 0);
    /* TIMER0 configuration */
    timer_initpara.prescaler         = 119;
    timer_initpara.alignedmode       = TIMER_COUNTER_EDGE;
    timer_initpara.counterdirection  = TIMER_COUNTER_UP;
    timer_initpara.period            = 999;
    timer_initpara.clockdivision     = TIMER_CKDIV_DIV1;
    timer_initpara.repetitioncounter = 0;
    timer_init(TIMER0, &timer_initpara);

    timer_icinitpara.icpolarity      = TIMER_IC_POLARITY_RISING;
    timer_icinitpara.icselection     = TIMER_IC_SELECTION_DIRECTTI;
    timer_icinitpara.icprescaler     = TIMER_IC_PSC_DIV1;
    timer_icinitpara.icfilter        = 0x0;
    timer_input_capture_config(TIMER0, TIMER_CH_0, &timer_icinitpara);

    timer_input_capture_config(TIMER0, TIMER_CH_3, &timer_icinitpara);

    /* auto-reload preload enable */
    timer_auto_reload_shadow_enable(TIMER0);
    timer_interrupt_flag_clear(TIMER0,TIMER_INT_FLAG_CH0);
    timer_interrupt_flag_clear(TIMER0,TIMER_INT_FLAG_CH3);
    timer_interrupt_enable(TIMER0,TIMER_INT_CH0);
    timer_interrupt_enable(TIMER0,TIMER_INT_CH3);
    timer_interrupt_enable(TIMER0,TIMER_INT_UP);
    timer_enable(TIMER0);
}


/*中断服务程序*/
void TIMER0_UP_TIMER9_IRQHandler(void) {

  if ( timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_UP) != RESET ) {
    timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_UP);
    timer0tick++;
  }
}

void TIMER0_Channel_IRQHandler() {

  if ( timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_CH0) != RESET) {
    timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_CH0);
  }
  else if (timer_interrupt_flag_get(TIMER0, TIMER_INT_FLAG_CH3) != RESET){   
    timer_interrupt_flag_clear(TIMER0, TIMER_INT_FLAG_CH3);
    rcvcnt++;
  }
}


    TIMER0 CH0和CH3的GPIO口确定可以正常检测到高低电平，然而软件在运行中，只有更新中断是正常的，输入捕获中断一直触发不了，不知道各位大佬们是否有遇到过此类问题，恳请指点一二，感谢！