The Digital to Analogue converter DAC writer

The Digital to Analogue Converter

Code:

TITLE "Write DAC"
liat p = 16f877
include <pl6f877.inc>
DELAY_LO EQU H'30'
COUNT EQU H'32'
ORG H'00'
NOP
GOTO START
;THE ROUTINES START HERE 
ORG 0x20
START BCF STATUS,RP0 ;BANK 0
CLRF PORTD ;-INITIALIZE PORTC By CLEARING OUTPJT DATA
LATCHES
BSF STATUS,RP0 ;SELECT BANK1
MOVLW 0X00 ;W REG =00
MOVWF TRISD ;SET RD AS oUTPUTS
BCF STATUS,RP0 ;BANK 0
CLRF COUNT ;COUNT = 0

MAIN MOVF COUNT,W ;GET COUNT
MOVWF PORTD ;OUTPUT W REG TO PORTB
CALL DELAY
CALL DELAY
INCF COUNT ;COUNT = COUNT + 1
GOTO MAIN
;SUBROUTINES

DELAY
  MOVLW 0X01; SET DELAY TIME
  MOVWF DELAY_LO
  
WAIT 
   INCFSZ DELAY_LO,1; COUNT DOWN
    GOTO WAIT 
    RETURN 
    END

_________________
M. S. Rakha, Ph.D.
Queen's University
Canada

Author: DrRakha
Mastermind

Posts: 2715
Have thanks: 74 time

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