초음파 센서를 달았는데...7_seg에서 막 1-11 이렇게 뜨고 거리제면 알수없는 숫자가 나오네요ㅠㅠ
근데 도대체 머가 문제인지 모르겠네요 ㅠㅠ
 
 
#include <mega128a.h>
#include <delay.h>
#define TRIGGER PORTD.0
flash unsigned char seg_pat[10]={0x3f, 0x06, 0x5b, 0x4f, 0x66,0x6d, 0x7d,0x07,0x7f,0x6f};
flash unsigned char seg_on[4] = {0x08, 0x04,0x02,0x01};
typedef unsigned char U8;
U8 EEE[16];
U8 dsp_no =0;
U8 echo_st =0;
void Distance_out(void);
unsigned int cnt =0;
unsigned int dist = 0;
unsigned int N1000, N100, N10,N1;
void main(void)
{
DDRB = 0xFF;
DDRD = 0b11111101;
DDRG = 0xFF;
PORTB =0x0;
PORTD = 0x0;
TRIGGER =0;
TIMSK = 0x41;
TCCR0 = 0x07;
ASSR = 0x0;
TCNT0 =176;
TCCR2 = 0x00;
TCNT2 = 138;
SREG = 0x80;
while (1)
    {
    // Please write your application code here
     cnt =0;   
     TRIGGER = 1;
     delay_us(15);
     TRIGGER = 0;
     
     while(PIND.1 ==0);
     TCNT2= 138;
     TCCR2 = 0x02;
     
     while(PIND.1 !=0){
     if(cnt >300)break;
     }
     TCCR2= 0x0;
     
     if(cnt >2 && cnt <300)dist = cnt;  
     else dist =300;
     
     Distance_out();
     delay_ms(100);
     
    }
}

void Distance_out(void){
int buf;
N1000 = dist/1000;
buf = dist%1000;
N100 = buf/100;
buf = buf%100;
N10 = buf/10;
N1 = buf%10;
}
interrupt [TIM0_OVF] void TIMER0 (void)
{
unsigned char pat;
TCNT0 =176;
if(dsp_no ==0)pat =N1;
else if(dsp_no ==1)pat =N10;
else if(dsp_no ==2)pat =N100;
else pat =N1000;
PORTG = seg_on[dsp_no];
PORTB = (seg_pat[pat]&0x70) | (PORTB &0x0F);
PORTD = (seg_pat[pat]&0x0F) | (PORTD &0x0F);
dsp_no = (dsp_no +1)%4;
}
interrupt [TIM2_OVF] void TIMER2(void)
{
TCNT2 = 138;
cnt++;
}