Write data to ports

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DrRakha
  • DrRakha
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Write data to ports

Wed May 15, 2013 9:09 pm

Write data to ports
Code:

TITLE "Write to port D"
list p = 16f877
include <p16f877.inc>
ORG 0 ;START ADDRESS
GOTO START ;START OF PROGPAM

ORG 20H
START CALL INITP ;INITIALISE PORTS
REPEAT MOVLW #55H ;SET OUTPUT TO 55H
MOVWF PORTD ;WRITE TO PORT C
GOTO REPEAT ;REPEAT FOREVER
INITP
MOVLW 0 ;MAKE PORT D OUTPUT
MOVWF TRISD ;DO IT
RETURN ;RETURN
END




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