PIC16F873 and LCD example

In this example we connect an LCD to our PIC16F873 microcontroller

Schematic

Code

Mplab X using the XC8 compiler requires lcd.h

lcd header file

 

[codesyntax lang=”c”]

#define _XTAL_FREQ 4000000

#define RS RC0
#define EN RC1
#define D4 RC2
#define D5 RC3
#define D6 RC4
#define D7 RC5
// BEGIN CONFIG
#pragma config FOSC = HS // Oscillator Selection bits (HS oscillator)
#pragma config WDTE = ON // Watchdog Timer Enable bit (WDT enabled)
#pragma config PWRTE = OFF // Power-up Timer Enable bit (PWRT disabled)
#pragma config BOREN = ON // Brown-out Reset Enable bit (BOR enabled)
#pragma config LVP = OFF // Low-Voltage (Single-Supply) In-Circuit Serial Programming Enable bit (RB3 is digital I/O, HV on MCLR must be used for programming)
#pragma config CPD = OFF // Data EEPROM Memory Code Protection bit (Data EEPROM code protection off)
#pragma config WRT = OFF // Flash Program Memory Write Enable bits (Write protection off; all program memory may be written to by EECON control)
#pragma config CP = OFF // Flash Program Memory Code Protection bit (Code protection off)
//END CONFIG

#include <stdio.h>
#include <stdlib.h>
#include <xc.h>
#include "lcd.h";
/*
* 
*/
int main()
{
unsigned int a;
TRISC = 0x00;
Lcd_Init();
while(1)
{
Lcd_Clear();
Lcd_Set_Cursor(1,1);
Lcd_Write_String("Line 1");
Lcd_Set_Cursor(2,1);
Lcd_Write_String("Line 2");

}
return 0;

}

[/codesyntax]

 

Links

10PCS lcd 1602 blue screen Character LCD Display

PIC16F873 DIP28 IC 20PCS