?? msp430x24x_p1_01.s43
字號:
;******************************************************************************
; MSP430x24x Demo - Software Poll P1.4, Set P1.0 if P1.4 = 1
;
; Description: Poll P1.4 in a loop, if HI, P1.0 is set, if LOW, P1.0 reset.
; ACLK = 32.768kHz, MCLK = SMCLK = default DCO
;
; MSP430x249
; -----------------
; /|\| |
; | | |
; --|RST |
; /|\ | |
; --o--|P1.4 P1.0|-->LED
; \|/
;
; 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
SetupP5 bis.b #BIT0,&P1DIR ; P1.0 output
;
Mainloop bit.b #010h,&P1IN ; P1.4 hi/low?
jc ON ; jmp--> P1.4 is set
;
OFF bic.b #BIT0,&P1OUT ; P1.0 = 0 / LED OFF
jmp Mainloop ;
ON bis.b #BIT0,&P1OUT ; P1.0 = 1 / LED ON
jmp Mainloop ;
;
;------------------------------------------------------------------------------
COMMON INTVEC ; Interrupt Vectors
;------------------------------------------------------------------------------
ORG RESET_VECTOR ; MSP430 RESET Vector
DW RESET ;
END
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