/*
 * LCDClock.java
 *
 * Created on 27 September 2001, 02:42
 */


import java.util.Date;
import com.dalsemi.comm.*;

/**
 *
 * @author  cjb
 * @version 
 */
public class LCDClock extends java.lang.Object {

    /** Creates new LCDClock */
    public LCDClock() {
    }

    public static void main (String args[]) {
        
        //initialise LCD
        
        LCDPort.sendControl(0x38); //2 line display, 8 bit data
        LCDPort.sendControl(0x0C); //turn on display, no cursor
        LCDPort.sendControl(0x01); //clear the screen
        
        Date now = new Date();
        
        while(true) {
            
            
            Date then = now;
            now = new Date();
            
            String date = getTwoDigitNumber(now.getDate()) + "-" + getTwoDigitNumber(now.getMonth() + 1) + "-" + (new Integer(now.getYear() + 100)).toString().substring(1);
            String time = getTwoDigitNumber(now.getHours()) + ":" + getTwoDigitNumber(now.getMinutes()) + ":" + getTwoDigitNumber(now.getSeconds());
            
            //only update if a second has passed
            if(now.getSeconds() != then.getSeconds()) {
                LCDPort.sendControl(0x01); //clear the screen 
  
                LCDPort.setAddress((int)0); //move to beginning of 1st line
                writeStringToLCD(date);

                LCDPort.setAddress((int)40); //move to beginning of second line
                writeStringToLCD(time);
            }
            
        } 
    }
 
    /**
     * write a string to the LCD
     */
    private static void writeStringToLCD(String str) {        
        char[] chars = str.toCharArray();        
        for(int i=0;i<chars.length;++i) {
            LCDPort.sendData((int)chars[i]);
        }
    }
    /**
     * if num is a single digit prefix it with a 0
     */
    private static String getTwoDigitNumber(int num) {   
        if(num < 10) {
            return("0" + String.valueOf(num));
        } else {
            return(String.valueOf(num));
        }
    }
        
    
    
}