#include <iom128v.h> 
#include <avrdef.h> 
#define LCD_WDATA PORTB 
#define LCD_WINST PORTB 
#define LCD_CTRL PORTC 

#define LCD_EN 0 
#define LCD_RW 1 
#define LCD_RS 2 


void delay_ms(unsigned int m); 
void delay_us(unsigned int u); 
void write_data(char d); 
void write_instruction(char i); 
void init_lcd(void); 
void LCD_STR(char* str); 

char Temp; 
char cnt; 
char sec, min, hour; 

void PortInit(void) 
{ 
    DDRC=0xff; 
    DDRB=0xe0; // PORTC의 하위 4비트를 출력으로 
} 
void LCD_Comm(char ch) 
{ 
LCD_CTRL &=~(1<<LCD_RS); 
LCD_CTRL &=~(1<<LCD_RW); 
LCD_CTRL |= (1 << LCD_EN); 
delay_us(50); 
LCD_WINST = ch; 
delay_us(50); 
LCD_CTRL &= ~(1 << LCD_EN); 
} 
void LCD_pos(unsigned char row, unsigned char col) // LCD 포지션 설정 
{ 
    LCD_Comm(0x80|(row+col*0x40)); // row = 문자행, col = 문자열 
} 

void LCD_CHAR(char c) { 
   write_data(c); 
  delay_ms(1); 
} 

void Init_Timer0(void) 
{ 
TCCR0|= (1 << WGM01);  OCR0 = 100; 
TIMSK = (1<<OCIE0); } 


 void timer0_out_comp(void) { 

cnt++ ; 
if(cnt == 20000) // 50us * 20000 = 1s ec 
{ 
cnt = 0; 
sec++; 
if(sec >= 60) { 
min++; sec = 0; 
} 
if(min >= 60) { 
hour++; min = 0; 
} 
if(hour>=24) hour = 0; 
} 
} 
void LCD_delay(char ms) { 
delay_ms(ms); 
} 
void LCD_Clear(void) { 
LCD_Comm(0x01);  LCD_delay(2); 
} 
void LCD_Init(void) 
{ 
   LCD_Comm(0x38); 
   LCD_delay(2); 
   LCD_Comm(0x38); 
   LCD_delay(2); 
   LCD_Comm(0x38); 
   LCD_delay(2); 
   LCD_Comm(0x0e); 
   LCD_delay(2); 
   LCD_Comm(0x06); 
   LCD_delay(2); 
   LCD_Clear(); 
} 

void main(void) 
{ 

    char str[] = "Current ime"; char str1[]= "AM 2:00:00"; char AM[] = "AM"; 
    char PM[] = "PM"; 
    Temp = 0; 
    cnt = 0; 
    sec = min=0; 
    hour = 12; 

    Init_Timer0(); // Timer 초기화 
    SREG|= 0x80; 
    TCCR0 |= 1 << CS01; 

    // LCD 초기화 
    PortInit(); 
    LCD_Init(); 
    LCD_pos(0,0); 
    LCD_STR(str); // 문자열 str을 LCD 출력 
    LCD_pos(1,0); // LCD 포지션 0행 0열 지정 
    LCD_STR(str1);// 문자열 str을 LCD 출력 




    while(1){ 
        if(hour > 12) { 
        LCD_pos(1,0); 

          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(1,6); 
      LCD_CHAR((min/10)+'0'); LCD_CHAR((min%10)+'0'); LCD_pos(1,9); 
      LCD_CHAR((sec/10)+'0 '); 
        LCD_CHAR((sec%10)+'0'); 
} 
} 
void init_lcd(void) 
{ 
    delay_ms(10); 
    write_instruction(0x30); 
    delay_ms(25); 
    write_instruction(0x30); 
    delay_ms(5); 
    write_instruction(0x30); 
    delay_ms(5); 
    write_instruction(0x3c); 
    delay_ms(5); 
    write_instruction(0x08); 
    delay_ms(5); 
    write_instruction(0x01); 
    delay_ms(5); 
    write_instruction(0x06); 
    delay_ms(5); 
    write_instruction(0x0c); 
    delay_ms(15); 
} 

void write_instruction(char i) 
{ 
    PORTB=0x80; 
    delay_us(10); 
    PORTC=i; 
    delay_us(10); 
    PORTB=0x00; 
    delay_us(100); 
} 
void write_data(char d) 
{ 
    PORTB=0xa0; 
    delay_us(10); 
    PORTC=d; 
    delay_us(10); 
    PORTB=0x20; 
    delay_us(100); 
} 
void delay_ms(unsigned int m) 
{ 
    unsigned int i,j; 
    for(i=0;i<m;i++) 
    { 
        for(j=0;j<2117;j++); 
    } 
} 
void delay_us(unsigned int u) 
{ 
    unsigned int i,j; 
    for(i=0;i<u;i++) 
    { 
        for(j=0;j<2;j++); 
    } 
} 
void LCD_STR(char*str) // 문자열출력 
{ 
    while(*str!= 0) 
    { 
        write_data(*str); 
        str++; 
    } 
} 

이렇게 했는데 1 warning이 뜨네요.. 핀번호가 잘못된건지 아니면 interrupt [TIM0_COMP] void timer0_out_comp(void) 이부분에서 interrupt [TIM0_COMP] 이걸지웠는데 지우면 안되는건가요?