stm32 PWM捕捉中断问题
我用Timer3做pwm输出，然后Timer2捕捉这个pulse输出，当pulse输出占空比大于50%时可以正常进入中断，但小于时进不能进入中断，也就是红色 CCR3_Val =18;改为 CCR3_Val =36时，就不能进入中断（注输出是经过三极管反向了）void IRQ_Tim2(void)
{
volatile unsigned short IC2Value = 0;
volatile unsigned short IC1Value = 0;
if(TIM_GetITStatus(TIM2, TIM_IT_CC2) == SET)
{
TIM_ClearITPendingBit(TIM2, TIM_IT_CC2);
IC2Value = TIM_GetCapture2(TIM2);
IC1Value = TIM_GetCapture1(TIM2);
if(start==1)
{
if(count
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