PIC16F84A LCD example with CCS C
There are 7 data lines between the microcontroller and the LCD display which are: RS, R/W, E, D4, D5, D6 and D7. The following PIC16F84A LCD example shows how to connect the LCD with the microcontroller and how to display characters using CCS C compiler.
Interface PIC16F84A with LCD circuit:
The following circuit schematic shows the required connection between PIC16F84A microcontroller and the LCD display.
Interface PIC16F84A with LCD CCS C code:
// Interfacing PIC16F84A with LCD display
// http://ccspicc.blogspot.com/
// electronnote@gmail.com
//LCD module connections
#define LCD_RS_PIN PIN_B0
#define LCD_RW_PIN PIN_B1
#define LCD_ENABLE_PIN PIN_B2
#define LCD_DATA4 PIN_B3
#define LCD_DATA5 PIN_B4
#define LCD_DATA6 PIN_B5
#define LCD_DATA7 PIN_B6
//End LCD module connections
#include <16F84A.h>
#fuses HS,NOWDT,PUT,NOPROTECT
#use delay(crystal=8000000)
#include <lcd.c>
unsigned int8 i = 0;
void main() {
lcd_init(); // Initialize LCD module
lcd_gotoxy(5, 1); // Go to column 5 row 1
lcd_putc("PIC16F84A");
lcd_gotoxy(4, 2); // Go to column 4 row 2
lcd_putc("LCD example");
delay_ms(5000);
lcd_putc('\f'); // LCD clear
lcd_gotoxy(3, 1); // Go to column 3 row 1
lcd_putc("Hello world!");
while(TRUE) {
lcd_gotoxy(7, 2);
printf(lcd_putc,"%3u",i); // Write i with 3 numbers max
i++; // Increment i by 1
if(i > 100)
i = 1;
delay_ms(200);
}
}
Interface PIC16F84A with LCD video:
