fet140_dac12_02.s43

来自「基于IAR Workbench for MSP430 的汇编语言例程」· S43 代码 · 共 40 行

;******************************************************************************
;   MSP-FET430P140 Demo - DAC12.1 Output 2V on P6.7  
;
;   Description; Using DAC12.1 and 2.5V ADC12REF reference with a gain of 1, 
;   output 2V on P6.7.
;   //* MSP430F169 Device Required*//
;
;                MSP430F169
;             -----------------
;         /|\|              XIN|-  
;          | |                 |
;          --|RST          XOUT|-
;            |                 |
;            |        DAC1/P6.7|--> 2V
;            |                 |
;
;   M.Buccini
;   Texas Instruments, Inc
;   January 2004
;******************************************************************************
#include  "msp430x16x.h"
;------------------------------------------------------------------------------ 
            ORG     01100h                  ; Progam Start 
;------------------------------------------------------------------------------ 
RESET       mov.w   #0A00h,SP               ; Initialize 'x1x9 stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupADC12  mov.w   #REF2_5V+REFON,&ADC12CTL0       ; Internal 2.5V ref on 
SetupDAC12  mov.w   #DAC12IR+DAC12AMP_5+DAC12ENC,&DAC12_1CTL ; Int ref gain 1
            mov.w   #0CCCh,&DAC12_1DAT      ; 2.0V
                                            ;                                                     
Mainloop    bis.w   #CPUOFF,SR              ; Enter LPM0
            nop                             ; Required only for debugger
                                            ;
;------------------------------------------------------------------------------ 
;           Interrupt Vectors Used MSP430x15x/16x         
;------------------------------------------------------------------------------ 
            ORG     0FFFEh                  ; MSP430 RESET Vector
            DW      RESET                   ; 
            END