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Using P18f4580 controller - Write a program in C using Timer0 to generate a square wave...

Using P18f4580 controller - Write a program in C using Timer0 to generate a square wave with a frequency of 1kHz on PORTBRB5? (Assume XTAL = 20 MHz).

Solutions

Expert Solution

The P18f4580 PROGRAM TO GENERATE A SQUARE QAVE OF FREQUENCE 1KHZ ON PORTBR5 is given as follows:

----------------------------------------------------------------

Program:
#include <p18F458.inc>
    ORG 0x00
    GOTO START
   ORG 0x30
START BCF TRISB,4
   MOVLW 0x08
         MOVWF T0CON
HERE MOVLW 0xFB
   MOVWF TMR0H
   MOVLW 0x1E
   MOVWF TMR0L
   BCF INTCON,TMR0IF
   CALL DELAY
   BTG PORTB,RB5
   BRA HERE
DELAY BSF T0CON,TMR0ON
AGAIN BTFSS INTCON,TMR0IF
   BRA AGAIN
   BCF T0CON,TMR0ON
   RETURN
   END

----------------------------------------------------------

So, the program above generates a square wave on PORT RB5.

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venereology answered 1 year ago
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