用定时器3 每5us产生一次中断，还能用定时器3的通道1作为输入捕获功能吗？是不是要共用一个中断函数？

gongpeng192 · 发表于 2015-6-14 21:32:50

上面是的中断服务函数是每5us 产生一次中断的函数

lycreturn · 发表于 2015-6-14 21:51:41

应该是可以的

gongpeng192 · 发表于 2015-6-14 22:19:45

回复【2楼】lycreturn:
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if((TIM4CH1_CAPTURE_STA&0X80)==0)//????????????
{

if (TIM_GetITStatus(TIM4, TIM_IT_Update) != RESET)

{
if(TIM4CH1_CAPTURE_STA&0X40)//??????????????????
{
if((TIM4CH1_CAPTURE_STA&0X3F)==0X3F)//?????????¤??
{
TIM4CH1_CAPTURE_STA|=0X80;//±ê????????????????
TIM4CH1_CAPTURE_VAL=0XFFFF;
}else TIM4CH1_CAPTURE_STA++;
}
}

if (TIM_GetITStatus(TIM4, TIM_IT_CC1) != RESET)//????1·??ú????????
{
if(TIM4CH1_CAPTURE_STA&0X40) //????????????????
{
TIM4CH1_CAPTURE_STA|=0X80; //±ê??????????????????????
TIM4CH1_CAPTURE_VAL=TIM_GetCapture1(TIM4);
TIM_OC1PolarityConfig(TIM4,TIM_ICPolarity_Rising); //CC1P=0 ?è??????????????
}
else   //????????,????????????????
{
TIM4CH1_CAPTURE_STA=0; //????
TIM4CH1_CAPTURE_VAL=0;
TIM_SetCounter(TIM4,0);
TIM4CH1_CAPTURE_STA|=0X40; //±ê????????????????
TIM_OC1PolarityConfig(TIM4,TIM_ICPolarity_Falling); //CC1P=1 ?è??????????????
}
}

}

    TIM_ClearITPendingBit(TIM4, TIM_IT_CC1|TIM_IT_Update); //????????±ê????

我试了  不行  如果5us 发生中断    那么脉冲捕获的中断服务程序还能正常运行吗？