fet440_1.s43

msp430f440的头程序

#include  "msp430x44x.h"
;******************************************************************************
;   MSP-FET430P440 Demo - Software Toggle P5.1  
;
;   Description; Toggle P5.1 by xor'ing P5.1 inside of a software loop.
;   ACLK = n/a, MCLK = SMCLK = default DCO
;
;                 MSP430F449
;             -----------------
;         /|\|              XIN|-  
;          | |                 |
;          --|RST          XOUT|-
;            |                 |
;            |             P5.1|-->LED
;
;   M.Buccini
;   Texas Instruments, Inc
;   January 2002
;******************************************************************************
;----------------------------------------------------------------------------- 
            ORG     01100h                  ; Program Start
;----------------------------------------------------------------------------- 
RESET       mov.w   #0A00h,SP               ; Initialize 'F449 stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupP1     bis.b   #002h,&P5DIR            ; P5.1 output
                                            ;			  
Mainloop    xor.b   #002h,&P5OUT            ; Toggle P5.1
Wait        mov.w   #050000,R15             ; Delay to R15
L1          dec.w   R15                     ; Decrement R15
            jnz     L1                      ; Delay over?
            jmp     Mainloop                ; Again
                                            ;
;------------------------------------------------------------------------------ 
;           Interrupt Vectors Used MSP430x44x         
;------------------------------------------------------------------------------ 
            ORG     0FFFEh                  ; MSP430 RESET Vector
            DW      RESET                   ; 
            END