코드를 입력하고 연결을 하면 초음파 센서가 작동을 안하는지 if(dist > 50) 이부분이 안돌아 갑니다..ㅠㅠㅠ 
 
제가 if문을 잘못적은건지 핀을 잘못 꼽은 건지 이해가 안돼서 질문을 드려요 ..ㅠㅠ
 
 
#include <mega128.h>   //mega128보드 라이브러리
#include <delay.h> //시간지연 함수 라이브러리
#define TRIGGER PORTD.0  
#define Echo  
     
typedef unsigned char u_char;
unsigned char num[10] = {0x67, 0x7f, 0x27, 0x7d, 0x6d, 0x66, 0x4f, 0x5b, 0x06, 0x3f };
unsigned int dist = 0, cnt = 0; //거리 측정 변수
int i = 0;
 
 
void main(void)
{   
    // 초기화: LED
    DDRC = 0xFF;  
    DDRE = 0xFF;
      
    PORTC = 0xFF;  
    PORTE = 0xFF;  
    delay_ms(50);
    
    // 초기화 : 초음파
    TRIGGER = 0; //트리거 초기화
    TIMSK = 0x65;  //타이머카운터 함수 ↓      
    TCCR0 = 0x8;         
    TCNT0 = 176;    
    TCCR2=0x00;                                                                                       
    TCNT2 = 138;               
                                                                    
    SREG = 0x80; //전역 인터럽트 설정      
    delay_ms(50);
    
 
    
   
    
    while(1){
    
        
        cnt = 0;
        TRIGGER = 1; //ECHO 출력          
        delay_us(15);
        TRIGGER = 0;
        
        DDRC = 0xFF;
        PORTC = 0x0F;
        PORTE = num[i];
        delay_ms(1000);
        i++;
         if(i ==11){
            i=0;
            DDRC = 0xFF;
            PORTC = 0xF0;
            delay_ms(5000);
            }
     } 
        
        while(PIND.1 == 0);    
        TCNT2 = 138;
        TCCR2 = 0x03;    
        
        while(PIND.1 != 0){    
            if(cnt > 300) break; // 3m보다 크면 측정 불가
        }                                               
        
        TCCR2 = 0x00;   
        
        if(cnt > 2 && cnt < 300) dist = cnt;
        else dist = 300;     
        
        if(dist > 50)
        { 
                            
            PORTC = 0b11111101;
            PORTC = 0b11111111;
            for (i=0;i<11;i++)
            {
            PORTE = num[i];
            delay_ms(1000);
            }      
        }        
        delay_ms(50);
    } 
// 초음파 센서 거리 측정
// 1/16us * 8 * (256 -138) = 59us
interrupt [TIM2_OVF] void time2(void)
{
    TCNT2 = 138;
    cnt++;
}