msp430x24x_p1_05.s43

步进电机驱动程序msp430f247单片机

;******************************************************************************
;   MSP430x249 Demo - Write a byte to Port 1
;
;   Description: Writes a byte(FFh) to Port 1 and stays in LPM4
;   ACLK = 32.768kHz, MCLK = SMCLK = default DCO
;
;                MSP430x249
;             -----------------
;         /|\|                 |
;          | |                 |
;          --|RST              |
;            |                 |
;            |                 |
;            |                 |
;
;   B. Nisarga
;   Texas Instruments Inc.
;   September 2007
;   Built with IAR Embedded Workbench Version: 3.42A
;******************************************************************************
#include  <msp430x24x.h>
;-------------------------------------------------------------------------------
            RSEG    CSTACK                  ; Define stack segment
;-------------------------------------------------------------------------------
            RSEG    CODE                    ; Assemble to Flash memory
;-----------------------------------------------------------------------------
RESET       mov.w   #SFE(CSTACK),SP         ; Initialize stackpointer
StopWDT     mov.w   #WDTPW+WDTHOLD,&WDTCTL  ; Stop WDT
SetupP1     bis.b   #0FFh,&P1DIR            ; P1.x output
            bis.b   #0FFh,&P1OUT            ; Set all P1 pins HI
                                            ;
Mainloop    bis.w   #LPM4,SR                ; LPM4
            nop                             ; Required only for debugger
                                            ;
;------------------------------------------------------------------------------
            COMMON  INTVEC                  ; Interrupt Vectors
;------------------------------------------------------------------------------
            ORG     RESET_VECTOR            ; MSP430 RESET Vector
            DW      RESET                   ;
            END