msp430f5529 ADC12 [复制链接]

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#include <msp430.h>

int main(void)
{
  volatile unsigned int i;
  WDTCTL = WDTPW+WDTHOLD;                   // Stop watchdog timer
  P6SEL |= 0x01;                            // Enable A/D channel A0
  REFCTL0 &= ~REFMSTR;                      // Reset REFMSTR to hand over control to
                                            // ADC12_A ref control registers
  ADC12CTL0 = ADC12ON+ADC12SHT02+ADC12REFON+ADC12REF2_5V;
                                            // Turn on ADC12, Sampling time
                                            // On Reference Generator and set to
                                            // 2.5V
  ADC12CTL1 = ADC12SHP;                     // Use sampling timer
  ADC12MCTL0 = ADC12SREF_1;                 // Vr+=Vref+ and Vr-=AVss

  for ( i=0; i<0x30; i++);                  // Delay for reference start-up

  ADC12CTL0 |= ADC12ENC;                    // Enable conversions

  while (1)
  {
    ADC12CTL0 |= ADC12SC;                   // Start conversion
    while (!(ADC12IFG & BIT0));
    __no_operation();                       // SET BREAKPOINT HERE

  }
}