Interfacing 16x2 LCD screen with PIC 16F877A Microcontroller in 4 Bit Mode

 

Download link

https://github.com/anokhramesh/16x2-LCD-with-PIC16F877A

/*INTERFACING 16x2 LCD screen with PIC16F877A Microcontroller in 4 Bit mode

 ANOKHAUTOMATION

 https://microcontrollerslab.com/lcd-interfacing-pic16f877a-microcontroller/*/

#include <xc.h>

__CONFIG(FOSC_HS & WDTE_OFF & PWRTE_OFF & BOREN_OFF & LVP_OFF & CPD_OFF & WRT_OFF & CP_OFF);

#define _XTAL_FREQ 10000000

void display(int a,int b);//function call

char name[]={"ANOKH-AUTOMATION"};//char array

void main(void) {

    TRISB0=TRISB1=TRISB4=TRISB5=TRISB6=TRISB7=TRISC0=0;// Set PORTB0,1,2,3,4,5,6,7 and PORTC0 as OUTPUT

    TRISB2=1;// set PORTB2 (PIN35) as INPUT(connect Push Button)

    RC0 =0; // set PORTC0 (PIN15) as OUTPUT(connect LED)

    

    display (0x02,0);//Command for change LCD to 4 Bit Mode

    display (0x01,0);//Command for clear screen

    display (0x0c,0);//command for display ON,Cursor OFF,Blink OFF                 

    display (0x28,0);//Command for4 bit interface, 2 lines, 5x8 font

    

    while(1)

    {display (0x80,0);//Command for Begin Print at 1st Row,1st column

for(int i=0;name[i]!='\0';i++) 

{display(name[i],1);

}

    if (RB2 ==1)//If Push Button is Pressed 

    {while(RB2 ==1);

    RC0 = RC0^1;// TOGGLE LED

    }

    }

}

    void display(int a,int b)//Function for Display

    {PORTB=a;

    RB0=b;

    RB1=1;

    __delay_ms(10);

    RB1=0;

    __delay_ms(10);

    PORTB=a<<4;

    RB0=b;

    RB1=1;

    __delay_ms(10);

    RB1=0;

    __delay_ms(10);

    return;

}