fet410_bt01.s43

来自「德州仪器(TI) 的超低功耗16 位RISC 混合信号处理器的MSP430 平台」· S43 代码 · 共 47 行

;******************************************************************************
;   MSP-FET430P410 Demo - Toggle P5.1 using ISR, DCO SMCLK 
;
;   Description; This program will toggle P5.1 by xor'ing P5.1 inside of
;   a basic timer ISR. Default DCO used to clock basic timer. 
;   ACLK = n/a, MCLK = SMCLK = default DCO 
;
;                MSP430F413
;             -----------------
;         /|\|              XIN|-  
;          | |                 |
;          --|RST          XOUT|-
;            |                 |
;            |             P5.1|-->LED
;
;   M.Buccini
;   Texas Instruments, Inc
;   January 2004
;******************************************************************************
#include  "msp430x41x.h"
;------------------------------------------------------------------------------ 
            ORG     0E000h                  ; Program Start
;------------------------------------------------------------------------------ 
RESET       mov.w   #300h,SP                ; Initialize stackpointer
Init_Sys    mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupBT     mov.b   #BTSSEL+BTIP2+BTIP1+BTIP0,&BTCTL   ; ~244us Int. 
            bis.b   #BTIE,&IE2              ; Enable Basic Timer interrupt        
SetupP5     bis.b   #002h,&P5DIR            ; P5.1 output
                                            ;						  
Mainloop    bis.w   #CPUOFF+GIE,SR          ; Enter LPM0, enable interrupts
            nop                             ; Required only for debugger
                                            ;
;------------------------------------------------------------------------------
BT_ISR;     Toggle P5.1
;------------------------------------------------------------------------------
            xor.b   #002h,&P5OUT            ; Toggle P5.1
            reti                            ;		 
                                            ;   
;----------------------------------------------------------------------------- 
;           Interrupt Vectors Used MSP430F4xx         
;----------------------------------------------------------------------------- 
            ORG     0FFFEh                  ; MSP430 RESET Vector
            DW      RESET                   ; 
            ORG     0FFE0h                  ; BT Vector
            DW      BT_ISR                  ; 
            END