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Implement the assembly program for the PIC18F452 microcontroller to implement a calculator
(regular basic calculator, 1 + 2 = 3).
ADD THE CALCULATOR PART IN THIS SOURCE CODE USING PIC18F452
DATASHEET
:TODO INSERT CONEIG CODE HERE USING CONEIG BITS GENERATOR INCLUDE
"p18f452.inc" RES VECT CODE 0x0000 : processor reset vector GOTO START :go to
beginning of program :TODO ADD INTERRUPTS HERE IF USED MYVARS UDATA ACS
cmd RES 1 stat RES 1 datum RES 1 LCD Register Address LCD CMD WR equ 0x00
LCD_DATA WR equ 0x01 LCD BUSY_RD equ 0x02 LCD_DATA RD equ 0x03 E PIN
MASK equ 0x04 LCD Commands LCD CLS LCD HOME LCD SETMODE LCD
SETVISIBLE LCD SHIFT LCD SETEUNCTION LCD SETCGADDR LCD SETDDADDR
equ 0x01 equ 0x02 equ 0x04 equ 0x08 equ 0x10 equ 0x20 equ 0x40 equ 0x80
Solution
/*Implement the assembly program for the PIC18F452 microcontroller to implement a calculator
(regular basic calculator, 1 + 2 = 3).*/
#INCLUDE<p18f452.inc>
org 0X00
ADD EQU 0X20
SUB1 EQU 0X21
DIV1 EQU 0X22
MUL1 EQU 0X23
NUM1 EQU 0X24
NUM2 EQU 0X25
NUM3 EQU 0X26
REMAINDER EQU 0X27
DIVISOR EQU 0X28
QUOTIENT EQU 0X29
DIVIDENT EQU 0X30
main: clrf TRISD
CLRF TRIC
setf TRISC
MOLW 0X00
MOLWF ADD1
MOLLW 0X40
MOLWF DIV1
MOLLW 0X80
MOLWF MUL1
movlw 0x00
movwf PORTD
movwf PORTC
UP:movf PORTB,W
ANDLW 0XCO
CPFSEQ ADD1
BRA CHECK1
BRA ADD
CHECK1:CPSEQ SUB1
BRA CHECK2
BRA SUB
CHECK2:CPFSEQ DIV1
BRA CHECKS
BRA DIV
CHECK3:CPFSEQ MUL1
BRA UP
BRA MUL
ADD:MOVF PORTB,W
MOVWF NUM3
ANDLW 0X38
MOVWF NUM1
RLNCF NUM1
RLNCF NUM1
RLNCF NUM1
RLNCF NUM1
RLNCF NUM1
MOVF NUM3,W
ANDLW 0X07
ADDWF NUM1,0,0
MOVWF PORTD
BRA UP
DIV:MOF PORTB,W
MOVWF DIVISOR
ANDLW 0S38
MOVWF DIVIDEND
RLNCF DIVIDEND
RLNCF DIVIDEND
RLNCF DIVIDEND
RLNCF DIVIDEND
RLNCF DIVIDEND
MOVF DIVISOR,W
ANDLW 0X07
MOVWF DIVISOR
CLRF QUOTIENT
CLRF REMAINDER
INCF QUOTIENT

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Implement the assembly program for the PIC18F452 microcontroller to im (1).docx

  • 1. Implement the assembly program for the PIC18F452 microcontroller to implement a calculator (regular basic calculator, 1 + 2 = 3). ADD THE CALCULATOR PART IN THIS SOURCE CODE USING PIC18F452 DATASHEET :TODO INSERT CONEIG CODE HERE USING CONEIG BITS GENERATOR INCLUDE "p18f452.inc" RES VECT CODE 0x0000 : processor reset vector GOTO START :go to beginning of program :TODO ADD INTERRUPTS HERE IF USED MYVARS UDATA ACS cmd RES 1 stat RES 1 datum RES 1 LCD Register Address LCD CMD WR equ 0x00 LCD_DATA WR equ 0x01 LCD BUSY_RD equ 0x02 LCD_DATA RD equ 0x03 E PIN MASK equ 0x04 LCD Commands LCD CLS LCD HOME LCD SETMODE LCD SETVISIBLE LCD SHIFT LCD SETEUNCTION LCD SETCGADDR LCD SETDDADDR equ 0x01 equ 0x02 equ 0x04 equ 0x08 equ 0x10 equ 0x20 equ 0x40 equ 0x80 Solution /*Implement the assembly program for the PIC18F452 microcontroller to implement a calculator (regular basic calculator, 1 + 2 = 3).*/ #INCLUDE<p18f452.inc> org 0X00 ADD EQU 0X20 SUB1 EQU 0X21 DIV1 EQU 0X22 MUL1 EQU 0X23 NUM1 EQU 0X24 NUM2 EQU 0X25
  • 2. NUM3 EQU 0X26 REMAINDER EQU 0X27 DIVISOR EQU 0X28 QUOTIENT EQU 0X29 DIVIDENT EQU 0X30 main: clrf TRISD CLRF TRIC setf TRISC MOLW 0X00 MOLWF ADD1 MOLLW 0X40 MOLWF DIV1 MOLLW 0X80 MOLWF MUL1 movlw 0x00 movwf PORTD movwf PORTC UP:movf PORTB,W ANDLW 0XCO CPFSEQ ADD1 BRA CHECK1 BRA ADD CHECK1:CPSEQ SUB1
  • 3. BRA CHECK2 BRA SUB CHECK2:CPFSEQ DIV1 BRA CHECKS BRA DIV CHECK3:CPFSEQ MUL1 BRA UP BRA MUL ADD:MOVF PORTB,W MOVWF NUM3 ANDLW 0X38 MOVWF NUM1 RLNCF NUM1 RLNCF NUM1 RLNCF NUM1 RLNCF NUM1 RLNCF NUM1 MOVF NUM3,W ANDLW 0X07 ADDWF NUM1,0,0 MOVWF PORTD BRA UP DIV:MOF PORTB,W
  • 4. MOVWF DIVISOR ANDLW 0S38 MOVWF DIVIDEND RLNCF DIVIDEND RLNCF DIVIDEND RLNCF DIVIDEND RLNCF DIVIDEND RLNCF DIVIDEND MOVF DIVISOR,W ANDLW 0X07 MOVWF DIVISOR CLRF QUOTIENT CLRF REMAINDER INCF QUOTIENT