lcd를 통해 알람시계가 작동되는것을 보고싶은데
어떻게 해야될지 모르겠습니다.
시계부분은 잘 나오는데 알람부분을 어떻게 해야될지 모르겠어요
12시 몇분 몇초에 알람이 울리게 하고싶은데 어떻게 해야될까요
알려주세요ㅜㅜ
 
#include "lcd.h"
 
#define Do  1908
#define Re  1700
#define Mi  1515
#define Fa  1432
#define Sol 1275
#define La  1136
#define Si  1012 
unsigned char Temp;
unsigned int cnt;
unsigned char sec, min, hour;
unsigned int alarm[]= {Do,Re,Mi};
 
void Init_Timer0(void)
{
    TIMSK = (1<<OCIE0);
    TCCR0 |= (1<< WGM01) | (1<<CS01);
    OCR0 = 100;
    SREG |= 0x80;
}
interrupt [TIM0_COMP] void timer0_out_comp(void)
{
    cnt++;
    
    if(cnt == 20000)
    {
        cnt =0;
        sec++;
        if(sec >= 60){
            min++; sec=0;
        }
        if(min >= 60){
            hour++; min=0;
        }
        if(hour>= 24) hour=0;
    }
}
void Buzzer(int melody)
{   
    int i;
    for(i=0; i<3; i++)
    {
        PORTG |= 1<<PORTG4;
        delay_ms(100);
        PORTG &= ~(1<<PORTG4);
        delay_ms(100);
    }
}
        
        
void main(void)
{
    unsigned char str[] = " Time ";
    unsigned char str1[] = " ";
    unsigned char AM[] = "AM";  
    unsigned char PM[] = "PM"; 
    
    int i;
    int melody;
    
    Temp =0;
    cnt =0;
    sec = min =0;
    hour =12;
    
    Init_Timer0();
    
    LCD_Init();  
    
    LCD_Pos(0,2);
    LCD_Str(str);   
    LCD_Pos(1,0);
    LCD_Str(str1);       
          
    
    while(1) {
        if(hour >12) {
            LCD_Pos(1,1);
            LCD_Str(PM);
            LCD_Char(((hour-12) /10) +'0');
            LCD_Char(((hour-12) %10) +'0');
        }
        else {
            LCD_Pos(1,0);
            LCD_Str(AM);
            LCD_Char((hour/10) +'0');
            LCD_Char((hour%10) +'0');
        }
        LCD_Pos(1,5);
        LCD_Char((min/10) +'0');
        LCD_Char((min%10) +'0');
        LCD_Pos(1,7);
        LCD_Char((sec/10) +'0');
        LCD_Char((sec%10) +'0');
    }
    if(hour == 12 & min == 0 & sec == 10)
    {
       Buzzer(melody[i]);
    
    }
}