帮忙看一下这个程序

1万 · 2013-9-17 18:56

我想调G2板子上的ADC10，写了这个程序，从P1.1输入，当输出超过一定值P1.0灯灭、

#include "msp430g2231.h"

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // Stop WDT
  ADC10CTL0 = SREF_0+ADC10SHT_2 + ADC10ON + ADC10IE+REFON; // ADC10ON, interrupt enabled
  ADC10CTL1=INCH_1+CONSEQ_0;
ADC10AE0 |= BIT1 ;                   // P2.0 ADC option select
  P1DIR |= BIT0;                         // Set P1.0 to output direction

  while(1)
{
ADC10CTL0 |= ENC + ADC10SC;          // Sampling and conversion start
__bis_SR_register(CPUOFF + GIE);       // LPM0, ADC10_ISR will force exit
if (ADC10MEM < 0x1FF)
   P1OUT |= BIT0;                      // Clear P1.0 LED off
else
   P1OUT &= ~BIT0;                      // Set P1.0 LED on
  }
}

// ADC10 interrupt service routine
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR(void)
{
  __bic_SR_register_on_exit(CPUOFF);       // Clear CPUOFF bit from 0(SR)
}