?? msp430x20x3_p1_01.s43
字號(hào):
;*******************************************************************************
; MSP430F20xx 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 = n/a, MCLK = SMCLK = default DCO
;
; MSP430F20xx
; -----------------
; /|\| XIN|-
; | | |
; --|RST XOUT|-
; /|\ | |
; --o--|P1.4 P1.0|-->LED
; \|/
;
; M. Buccini / L. Westlund
; Texas Instruments Inc.
; October 2005
; Built with IAR Embedded Workbench Version: 3.40A
;*******************************************************************************
#include "msp430x20x3.h"
;-------------------------------------------------------------------------------
ORG 0F800h ; Program Reset
;-------------------------------------------------------------------------------
RESET mov.w #0280h,SP ; Initialize stackpointer
StopWDT mov.w #WDTPW+WDTHOLD,&WDTCTL ; Stop WDT
SetupP1 bis.b #001h,&P1DIR ; P1.0 output
;
Mainloop bit.b #010h,&P1IN ; P1.4 hi/low?
jc ON ; jmp--> P1.4 is set
;
OFF bic.b #001h,&P1OUT ; P1.0 = 0 / LED OFF
jmp Mainloop ;
ON bis.b #001h,&P1OUT ; P1.0 = 1 / LED ON
jmp Mainloop ;
;
;-------------------------------------------------------------------------------
; Interrupt Vectors
;-------------------------------------------------------------------------------
ORG 0FFFEh ; MSP430 RESET Vector
DW RESET ;
END
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