PIC18F4550 LCD Interfacing in CCS PICC

A character LCD traditional built with a controller inside especially the HD44780. It's easy to control with some basic LCD instruction. For more technical details and programming interface for this type of LCD controller click here to view. Character LCD are available from as single to multiple lines and multiple characters.

x2

x1.5

x1

x0.5

00:00 / 00:00

• Pause
• Unmute
• Fullscreen
• Fluid Player 3.51.0

A running Program

In CCS PIC an LCD software driver is ready to use in side the compiler. The LCD.C driver could control a character LCD only for two line character LCD. Within this driver there are a lot of functions lists below.

1. lcd_init() - must be called before calling other function
2. lcd_putc() - send one character to LCD
3. lcd_gotoxy(x,y) - set write position on LCD, start from 1,1
4. lcd_getc(x,y) - return character at the position x,y on  LCD
5. lcd_cursor_on(int1 on) - turn on cursor
6. lcd_set_cgram_char(w,*p) - write custom character to CGRAM

In this example, the LCD prints the duration of MCU started up time. The C printf function could be use to send the character to LCD by adding the LCD_PUTC stream to this function.

	#include<18f4550.h>
	/*Use high speed clock no PLL prescaler
	no system clock post scaler */
	#fuses HS,PLL1,CPUDIV1
	#use delay(clock=20M)
	#define LCD_ENABLE_PIN PIN_B2
	#define LCD_RS_PIN PIN_B0
	#define LCD_RW_PIN PIN_B1
	#define LCD_DATA4 PIN_B4
	#define LCD_DATA5 PIN_B5
	#define LCD_DATA6 PIN_B6
	#define LCD_DATA7 PIN_B7
	#include<lcd.c>
	void main(){
	char secondCount=0;
	lcd_init();
	//First Line
	lcd_gotoxy(1,1);
	//Send characters to LCD
	printf(LCD_PUTC,"Power Up Time:");
	while(1){
	//Second Line
	lcd_gotoxy(1,2);
	//Send character to LCD
	printf(LCD_PUTC,"%u seconds ",secondCount);
	delay_ms(1000);
	secondCount++;
	}
	}

view raw lcdExample.c hosted with ❤ by GitHub

Click here to download this example in zip file.

Schematic Diagram