msp430f149控制超声波模块的程序

曾经最美 · 发表于 2016-4-21 22:31:58

#include<msp430x14x.h>
#include"DELAY.h"

#define uint unsigned int
#define uchar unsigned char

void main()
{
WDTCTL=WDTPW+WDTHOLD;
P1DIR=0x00;
P1IES=0x00;

P1OUT=0X00;
   _EINT();
P2DIR=0xff;
P2OUT=0xff;
uint time=0;
P6DIR=0xff;
P6OUT=0x00;
while(1)
{
      P1IE=0xff;
      P6OUT=0xff;
      DELAY_us(1);
      P6OUT=0x00;
      // while(P1IFG==0x00);
      while(TBR==0);
      if(P1IN==0x00)
         time=TBR;
      if(time>50)
         P2OUT=0xff;
      if(time<50)
         P2OUT=0x00;

}
}

#pragma vector=PORT1_VECTOR

__interrupt void PORT1_(void)
{
P1IFG=0x00;
TBCTL=TBSSEL_2+ID_3+MC_1;
TBCCR0=65535;
TBR=0;
//P2OUT=0x00;
P1IE=0x00;
}