fet110_ta05.s43

msp430p1110

#include  "msp430x11x1.h"
;******************************************************************************
;   MSP-FET430x110 Demo - Timer_A Toggle P1.0, CCR0 upmode ISR, 32kHz ACLK 
;
;   Description; Toggle P1.0 using software and the TA_0 ISR. Timer_A is 
;   configured in an upmode, thus the the timer will overflow when TAR counts 
;   to CCR0. In this example, CCR0 is loaded with 1000.
;   ACLK = TACLK = 32768, MCLK = SMCLK = DCO ~ 800k 
;   //*An external watch crystal on XIN XOUT is required for ACLK*//	  
;
;                 MSP430F1121
;             -----------------
;         /|\|              XIN|-  
;          | |                 | 32kHz
;          --|RST          XOUT|-
;            |                 |
;            |             P1.0|-->LED
;
;   M.Buccini
;   Texas Instruments, Inc
;   January 2002
;******************************************************************************
;----------------------------------------------------------------------------- 
            ORG     0F000h                  ; Program Start
;----------------------------------------------------------------------------- 
RESET       mov.w   #300h,SP                ; Initialize stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupTA     mov.w   #TASSEL0+TACLR,&TACTL   ; ACLK, clear TAR
SetupC0     mov.w   #CCIE,&CCTL0            ; CCR0 interrupt enabled
            mov.w   #1000-1,&CCR0           ; CCR0 counts to 1000
SetupP1     bis.b   #001h,&P1DIR            ; P1.0 output 
            bis.w   #MC0,&TACTL             ; Start Timer_a in upmode
            eint                            ; Enable interrupts
                                            ;													  
Mainloop    bis.w   #LPM3,SR                ; Enter LPM3
            nop                             ; Required for C-spy
                                            ;
;----------------------------------------------------------------------------- 
TA0_ISR;    Toggle P1.0
;----------------------------------------------------------------------------- 
            xor.b   #001h,&P1OUT            ; Toggle P1.0
            reti                            ;		 
                                            ;
;----------------------------------------------------------------------------- 
;           Interrupt Vectors Used MSP430x11x1          
;----------------------------------------------------------------------------- 
            ORG     0FFFEh                  ; MSP430 RESET Vector
            DW      RESET                   ; 
            ORG     0FFF2h                  ; Timer_A0 Vector
            DW      TA0_ISR                 ; 
            END