fet430_dac12_01.c

msp430开发c语言例程

//*******************************************************************************
//  MSP-FET430P430 Demo - DAC12.0 Output 1V 
//
//  Description; Using DAC12.0 and 2.5V ADC12REF reference with a gain of 1, 
//  ouput 2V on P6.6. Ouput accuracy is specified by that of the ADC12REF.
//
//               MSP430FG439
//            -----------------
//        /|\|              XIN|-  
//         | |                 |
//         --|RST          XOUT|-
//           |                 |
//           |        DAC0/P6.6|--> 1V
//           |                 |
//
//  M.Buccini
//  Texas Instruments, Inc
//  June 2004
//  Built with IAR Embedded Workbench Version: 2.21B
//******************************************************************************

#include  <msp430xG43x.h>

void main(void)
{ 
  WDTCTL = WDTPW + WDTHOLD;             // Stop watchdog timer
  ADC12CTL0 = REF2_5V + REFON;          // Internal 2.5V ref on 
  DAC12_0CTL = DAC12IR + DAC12AMP_5 + DAC12ENC;   // Internal ref gain 1
  DAC12_0DAT = 0x0666;                  // 1V

  _BIS_SR(LPM4_bits);                   // Enter LPM4 
}