?? msp430x42x0_dac_01.s43
字號:
;******************************************************************************
; 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
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