msp430x42x0_dac_01.s43

MSP430F42x0.zip c语言 例程打包

;******************************************************************************
;   MSP430x42x0 Demo - DAC0 1V output
;
;   Description: Output 1V on DAC0
;   ACLK = n/a, MCLK = SMCLK = default DCO
;
;                MSP430F4270
;             -----------------
;        /|\|              XIN|-
;         | |                 |
;         --|RST          XOUT|-
;           |                 |
;           |        DAC0/P1.4|--> 1V
;           |                 |
;
;  L. Westlund / S. Karthikeyan
;  Texas Instruments Inc.
;  June 2005
;  Built with IAR Embedded Workbench Version: 3.30A
;******************************************************************************
#include  <msp430x42x0.h>
;------------------------------------------------------------------------------
            ORG     08000h                  ; Program Start
;------------------------------------------------------------------------------
RESET       mov.w   #300h,SP                ; Initialize stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
            bis.b   #XCAP14PF,&FLL_CTL0     ; Configure load caps

            mov.w   #SD16REFON, &SD16CTL    ;  1.2V ref
            mov.w   #DAC12OPS + DAC12SREF_2 + DAC12IR + DAC12AMP_5 + DAC12ENC, &DAC12_0CTL ;
                                            ; DAC o/p external, Ref Voltage = internal (SD16),
                                            ; O/p Voltage range = 1x ref, Enable conversion

            mov.w   #0D54h, &DAC12_0DAT     ; 1V (Full range = 0FFFh = 1.2v)

Mainloop    bis.w   #CPUOFF,SR              ; Enter LPM0
            nop

;------------------------------------------------------------------------------
;           Interrupt Vectors
;------------------------------------------------------------------------------
            ORG     0FFFEh                  ; RESET Vector
            DW      RESET                   ;
            END