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;*******************************************************************************
;   MSP430x6xx Demo - Software Toggle P1.0
;
;   Description; Toggle P1.0 by xor'ing P0.1 inside of a software loop.
;   ACLK = n/a, MCLK = SMCLK = default DCO ~ 800k
;
;                MSP430x6xx
;             -----------------
;         /|\|              XIN|-
;          | |                 |
;          --|RST          XOUT|-
;            |                 |
;            |             P1.0|-->LED
;
;   M. Buccini
;   Texas Instruments, Inc
;   March 2009
;   Built with CCS for MSP430 Version: 4
;*******************************************************************************
            .cdecls C,LIST,"msp430f6638.h"  ; Include device header file

;-------------------------------------------------------------------------------
            .text                           ; Progam Start
;-------------------------------------------------------------------------------
RESET       mov.w   #1C80h,SP               ; Initialize 'x1121 stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupP1     bis.b   #001h,&P1DIR            ; P1.0 output
                                            ;
Mainloop    xor.b   #001h,&P1OUT            ; Toggle P1.0
Wait        mov.w   #050000,R15             ; Delay to R15
L1          dec.w   R15                     ; Decrement R15
            jnz     L1                      ; Delay over?
            jmp     Mainloop                ; Again
                                            ;
;-------------------------------------------------------------------------------
;           Interrupt Vectors
;-------------------------------------------------------------------------------
            .sect   ".reset"                ; MSP430 RESET Vector
            .short  RESET                   ;

            .end