使用STM32F407控制5路超聲波感測器
阿新 • • 發佈：2019-01-04
void SingleChannelHandler(TIM_CAPTURE * tch )
{
if((tch->CAPTURE_STA&0X80)==0)//»¹Î´³É¹¦²¶»ñ
{
if(TIM_GetITStatus(tch->timX, TIM_IT_Update) != RESET)//Òç³ö
{
if(tch->CAPTURE_STA&0X40)//ÒѾ²¶»ñµ½¸ßµçƽÁË
{
if((tch->CAPTURE_STA&0X3F)==0X3F)//¸ßµçƽ̫³¤ÁË
{
tch->CAPTURE_STA|=0X80; //±ê¼Ç³É¹¦²¶»ñÁËÒ»´Î
tch->CAPTURE_VAL=0XFFFFFFFF;
}else tch->CAPTURE_VAL++;
}
}
if(TIM_GetITStatus(tch->timX, tch->TIM_IT_CCX) != RESET)//²¶»ñ1·¢Éú²¶»ñʼþ
{
if(tch->CAPTURE_STA&0X40) //ÒѾ²¶»ñµ½¸ßµçƽ£¬±¾´Î²¶»ñµ½Ï½µÑØ
{
tch->CAPTURE_STA|=0X80; //±ê¼Ç³É¹¦²¶»ñµ½Ò»´Î¸ßµçƽÂö¿í
//tch->CAPTURE_VAL=TIM_GetCapture1(tch->timX);//»ñÈ¡µ±Ç°µÄ²¶»ñÖµ.
switch( tch->TIM_IT_CCX ) // ¸ù¾Ý²»Í¬Í¨µÀÑ¡Ôñº¯Êý
{
case TIM_IT_CC1:
tch->CAPTURE_VAL=TIM_GetCapture1(tch->timX);//»ñÈ¡µ±Ç°µÄ²¶»ñÖµ.
TIM_OC1PolarityConfig(tch->timX,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC2:
tch->CAPTURE_VAL=TIM_GetCapture2(tch->timX);//»ñÈ¡µ±Ç°µÄ²¶»ñÖµ.
TIM_OC2PolarityConfig(tch->timX,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC3:
tch->CAPTURE_VAL=TIM_GetCapture3(tch->timX);//»ñÈ¡µ±Ç°µÄ²¶»ñÖµ.
TIM_OC3PolarityConfig(tch->timX,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC4:
tch->CAPTURE_VAL=TIM_GetCapture4(tch->timX);//»ñÈ¡µ±Ç°µÄ²¶»ñÖµ.
TIM_OC4PolarityConfig(tch->timX,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
default:
break;
}
//printf(" tch->TIM_IT_CCX = %d ",tch->TIM_IT_CCX); //´òÓ¡×ܵĸߵãƽʱ¼ä
//TIM_OC1PolarityConfig(tch->timX,TIM_ICPolarity_Rising); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
}else //»¹Î´¿ªÊ¼,µÚÒ»´Î²¶»ñÉÏÉýÑØ
{
tch->CAPTURE_STA=0; //Çå¿Õ
tch->CAPTURE_VAL=0;
tch->CAPTURE_STA|= 0X40; //±ê¼Ç²¶»ñµ½ÁËÉÏÉýÑØ
TIM_Cmd(tch->timX,DISABLE ); //¹Ø±Õ¶¨Ê±Æ÷
TIM_SetCounter(tch->timX,0);
// printf(" tch->CAPTURE_STA = %d ",tch->CAPTURE_STA); //´òÓ¡×ܵĸߵãƽʱ¼ä
//TIM_OC1PolarityConfig(tch->timX,TIM_ICPolarity_Falling); //CC1P=1 ÉèÖÃΪϽµÑز¶»ñ
switch( tch->TIM_IT_CCX )
{
case TIM_IT_CC1:
TIM_OC1PolarityConfig(tch->timX,TIM_ICPolarity_Falling); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC2:
TIM_OC2PolarityConfig(tch->timX,TIM_ICPolarity_Falling); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC3:
TIM_OC3PolarityConfig(tch->timX,TIM_ICPolarity_Falling); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
case TIM_IT_CC4:
TIM_OC4PolarityConfig(tch->timX,TIM_ICPolarity_Falling); //CC1P=0 ÉèÖÃΪÉÏÉýÑز¶»ñ
break;
default:
break;
}
TIM_Cmd(tch->timX,ENABLE ); //ʹÄܶ¨Ê±Æ÷s
}
}
}
TIM_ClearITPendingBit(tch->timX, tch->TIM_IT_CCX | TIM_IT_Update); //Çå³ýÖжϱê־λ
}