#include <avr/io.h>
#include <avr/interrupt.h>
#include "OK128.h"
volatile unsigned int second, minute, hour;
#define VLOA 9008   // define note, octave 2
#define VLOAX 8580
#define VLOB 8098
#define LOC 7644   // define note, octave 3
#define LOCX 7214
#define LOD 6810
#define LODX 6427
#define LOE 6066
#define LOF 5726
#define LOFX 5404
#define LOG 5101
#define LOGX 4815
#define LOA 4544
#define LOAX 4289
#define LOB 4049
#define MIC 3821   // define note, octave 4
#define MICX 3607
#define MID 3404
#define MIDX 3213
#define MIE 3033
#define MIF 2862
#define MIFX 2702
#define MIG 2550
#define MIGX 2407
#define MIA 2272
#define MIAX 2144
#define MIB 2024
#define HIC 1910   // define note, octave 5
#define HICX 1803
#define HID 1702
#define HIDX 1606
#define HIE 1516
#define HIF 1431
#define HIFX 1350
#define HIG 1275
#define HIGX 1203
#define HIA 1135
#define HIAX 1072
#define HIB 1011
#define VHIC 955   // define note, octave 6
#define VHICX 901
#define VHID 850
#define VHIDX 803
#define VHIE 757
#define NOTE32 1*3   // define note length
#define NOTE16 2*3
#define NOTE16D 3*3
#define NOTE16T 2*2
#define NOTE8 4*3
#define NOTE8D 6*3
#define NOTE8T 4*2
#define NOTE4 8*3
#define NOTE4D 12*3
#define NOTE4T 8*2
#define NOTE2 16*3
#define NOTE2D 24*3
#define NOTE1 32*3
#define REST32 1*3   // define rest length
#define REST16 2*3
#define REST16D 3*3
#define REST8 4*3
#define REST8D 6*3
#define REST4 8*3
#define REST4D 12*3
#define REST2 16*3
#define REST2D 24*3
#define REST1 32*3
unsigned char tempo;
void Set_tempo(unsigned char number)            /* set tempo */
{
  tempo = number;                               // set tempo
  TCCR3A = 0x40;                                // CTC mode(12), use OC3A
  TCCR3B = 0x18;                                // speaker off
  TCCR3C = 0x00;
}
void Play_note(unsigned int sound, unsigned int note) /* play note */
{
  ICR3 = sound;     // set ICR3
  TCNT3 = 0x0000;                               // clear Timer/Counter3
  TCCR3B = 0x1A;                                // start CTC mode(prescaler = 8)

  Delay_ms(note*tempo*7);                       // note play time

  TCCR3B = 0x18;                                // speaker off
}
void Play_rest(unsigned int rest)               /* play rest */
{
  Delay_ms(rest*tempo*7);                       // rest play time
}
void Clear_time(void)                           /* clear time */
{ hour=0; minute=0; second=0;                         // clear time
  LCD_string(0x80," Remaining 00.0  ");          // clear display
}
void Set_timer1(void)                           /* initialize Timer1 and OC1A */
{
  TCCR1A = 0x00;                                // CTC mode(4), don\'t output OC1A
  TCCR1B = 0x0C;                                // 16MHz/256/(1+624) = 100Hz
  TCCR1C = 0x00;
  OCR1A = 6240;
  TCNT1 = 0x0000;                               // clear Timer 실제 카운트되는 수치가 저장되는 레지스터
  ETIMSK = 0x00;
  TIFR = 0x3C;                                  // clear all interrupt flags
  ETIFR = 0x01;
}
void Set_SW2_int(void)                           /* initialize Timer1 and OC1A */
{
  EICRB = 0x00;                                 // INT7 = level trigger
  EIMSK = 0x80;     // enable INT7
  EIFR = 0xFF;                                  // clear interrupt flag
}
void LCD_2digit(unsigned char number)           /* display 2-digit decimal number */
{
                  // 10^1
  LCD_data(number%10 + \'0\');                    // 10^0
}
void Display_time(void)                         /* display time */
{

  LCD_command(0x8B);                            // display hour
  LCD_2digit(hour);
  LCD_command(0x8C);                            // display minute
  LCD_2digit(minute);
  LCD_command(0x8E);                            // display 1/100 second
  LCD_2digit(second%100);

}
ISR(INT7_vect)
{ 
   TIMSK = 0x10;         
   }
void Music(void)
{
   LCD_string(0xC0,"PongdangPongdang"); // display music title
      Set_tempo(2);    // set tempo

      Play_note(MIG,NOTE8);               // line 1
      Play_note(MIG,NOTE8);
      Play_note(MIA,NOTE8);
      Play_note(MIB,NOTE8);
      Play_note(MIG,NOTE8);
      Play_note(MIB,NOTE8);
      Play_note(MIA,NOTE8);
      Play_note(MIFX,NOTE8);
      Play_note(MIG,NOTE8);
      Play_note(MIG,NOTE8);
      Play_note(MIA,NOTE8);
      Play_note(MIB,NOTE8);
      Play_note(MIG,NOTE4);
      Play_note(MIFX,NOTE4);
      Play_note(MIG,NOTE8);// line 2
      Play_note(MIG,NOTE8);
      Play_note(MIA,NOTE8);
      Play_note(MIB,NOTE8);
      Play_note(HIC,NOTE8);        
      Play_note(MIB,NOTE8);
      Play_note(MIA,NOTE8);
      Play_note(MIG,NOTE8);
      Play_note(MIFX,NOTE8);
      Play_note(MID,NOTE8);
      Play_note(MIE,NOTE8);
      Play_note(MIFX,NOTE8);
      Play_note(MIG,NOTE4);
      Play_note(MIG,NOTE4);
      Play_note(MIE,NOTE8D); // line 3
      Play_note(MIFX,NOTE16);
      Play_note(MIE,NOTE8);
      Play_note(MID,NOTE8);            
      Play_note(MIE,NOTE8);
      Play_note(MIFX,NOTE8);
      Play_note(MIG,NOTE4);
      Play_note(MID,NOTE8);
      Play_note(MIE,NOTE16);
      Play_note(MID,NOTE8);
      Play_note(MIC,NOTE8);
      Play_note(LOB,NOTE4);
      Play_note(MID,NOTE4);
      Play_note(MIE,NOTE8D); // line 4
      Play_note(MIFX,NOTE16);
      Play_note(MIE,NOTE8);
      Play_note(MID,NOTE8);            
       Play_note(MIE,NOTE8);
 Play_note(MIFX,NOTE8);
Play_note(MIG,NOTE8);
       Play_note(MIE,NOTE8);
       Play_note(MID,NOTE8);
       Play_note(MIG,NOTE8);
       Play_note(MIFX,NOTE8);
 Play_note(MIA,NOTE8);
       Play_note(MIG,NOTE4);
       Play_note(MIG,NOTE4);
       }
ISR(TIMER1_COMPA_vect)   /* OC1A interrupt function */
{ 
 second--;                                     // increment 1/100 second
   if(second == -1)                            // second = 60 ?
    {    minute--;
  second = 9;                            // if yes, second = 0 and minute++
    
     if(minute ==-1 )                         
        {    hour--;   
  minute = 9;              
           if(hour ==-1)                      
            { 
    minute = 0;
    second = 0;
    int i =0;
   for (i = 0; i < 20; i++)
   { Beep();
   }
    TIMSK = 0x00;
         Clear_time();   // enable OC1A interrupt     
   }
        
           }            
 
  }
   Display_time(); 
}

int main(void)
{
 MCU_initialize();                             // initialize MCU and kit
   Delay_ms(1000);                                 // wait for system stabilization
   LCD_initialize();                             // initialize text LCD module
   //Beep();

   LCD_string(0x80," Remaining 00.0 s  ");          // display title
 //Clear_time();                                 // clear time and display
   //run_flag = 0;
 Set_timer1();                                 // initialize Timer1 and OC1A
 Set_SW2_int();

    sei();

 while(1)
 { switch(Key_input())                       // key input
        {
   case 0x70 : PORTB = 0x80;  // KEY4
     hour +=1 ;
    Display_time();   
             break;

   
   case 0xB0 : PORTB = 0x40; //KEY 3
    minute +=1;
    if(minute ==10)
    {
     minute =0;
     hour ++;
    }
         
    Display_time();   
    break;

   case 0xD0 : PORTB = 0x20; // KEY 2
    second +=1;
    if(second == 10)
    {
     second=0;
     minute ++;
    }
    Display_time();   
      break;

  }
 
 }
}
스탑워치 프로그램인데요 스탑워치 되면서 노래같이 나오다가 인터럽트 걸리면 노래랑 스탑워치가 동시에
멈추게 하려면 어떻게 해야되나요 ..ㅜㅜㅜㅜㅜㅜㅜ