#include <mega16.h>
#include <lcd.h>
#include <stdio.h>
#define xtal 8000000

#asm
   .equ __lcd_port=0x1B ;PORTA
#endasm

unsigned char second, minute,hour;
unsigned char lcd_buff[10];

interrupt [TIM2_OVF] void timer2_ovf_isr(void)
{
        if(second==59)
        {
                second=0;
                if(minute==59)
                {
                        minute=0;
                        if(hour==24)
                                hour=0;
                        else
                                hour++;
                }
                else
                        minute++;
        }
        else
                second++;
                
        sprintf(lcd_buff,"Time = %d:%d:%d",hour, minute, second);
        lcd_clear();
        lcd_puts(lcd_buff);
}

// Declare your global variables here


void main(void)
{

// Timer/Counter 2 initialization
// Clock source: TOSC1 pin
// Clock value: PCK2/128
// Mode: Normal top=FFh
// OC2 output: Disconnected
ASSR=0x08;
TCCR2=0x05;
TCNT2=0x00;
OCR2=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x40;

lcd_init(16);

#asm("sei") // Global enable interrupts

while (1);

}