아두이노에서 인터럽트 기능을 통해 버튼을 누르면 블루투스로 받은 숫자를 세븐 세그먼트에 뜨도록 하고 있는데 버튼을 누르면 1의 자리 숫자가 안뜨네요
 
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#define A 3
#define B 4
#define C 8
#define D 10
#define E 9
#define F 7
#define G 11
#define digit1 6
#define digit2 5
#define PIN            12
#define NUMPIXELS      20
#define buttonPin      2
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
int buttonState = 0;
int bookled; 
int delayval = 500;
int k=0;
int j=0;
int i=0;
const int segs[7]={A,B,C,D,E,F,G};
const int numbers[10][7]={{1,1,1,1,1,1,0},{0,1,1,0,0,0,0},{1,1,0,1,1,0,1},{1,1,1,1,0,0,1},{0,1,1,0,0,1,1},{1,0,1,1,0,1,1},{1,0,1,1,1,1,1},{1,1,1,0,0,1,0},{1,1,1,1,1,1,1},{1,1,1,1,0,1,1},};
const int NUMBER_OF_FIELDS = 2;
int fieldIndex = 0;
int values[NUMBER_OF_FIELDS];
int randomNum = 0;
char ch;
char store=0;
void setup(){
  Serial.begin(9600);
#if defined (__AVR_ATtiny85__)
  if (F_CPU == 16000000) clock_prescale_set(clock_div_1);
#endif
  pixels.begin();
  pinMode(buttonPin, INPUT_PULLUP);
  
  for(int i=0;i<7;i++){
    pinMode(segs[i],OUTPUT);
  }
  pinMode(digit1,OUTPUT);
  pinMode(digit2,OUTPUT);
}
void loop(){
  if(Serial.available())
  {
    ch = Serial.read();
    if(store!=ch)
    {
      if(store >= '0' && store <= '9')
      {
        if(fieldIndex < NUMBER_OF_FIELDS)
        {
          values[fieldIndex]=(values[fieldIndex] * 10) + ((int)store - '0');
        }
      }
      else if(store == ',')
      {
        fieldIndex++;
      }
      else
      {
        randomNum = values[0];
        bookled = values[1];
        fieldIndex = 0;
        values[0]=0;
      }
      store=ch;
    }
  }
  lightnumber1(randomNum%10);
  delay(10);
  lightnumber2(randomNum/10);
  delay(10);
  pixels.clear();
  pixels.show();
  buttonState=digitalRead(buttonPin);
  
  
  
  if(buttonState==LOW)
  {
    randomNum=0;
    for(j=0;j<5;j++)
    {
      for(k=0;k<3;k++)
      {
        pixels.setPixelColor(bookled-2+k, pixels.Color(10,10,10));
      }
      pixels.show();
      delay(500);
      pixels.clear();
      pixels.show();
      delay(delayval);
    }
  }
  
}
void lightnumber1(int num1){
  digitalWrite(digit1,LOW);
  digitalWrite(digit2,HIGH);
  for(int i=0;i<7;i++){
    digitalWrite(segs[i],numbers[num1][i]);
  }
}
void lightnumber2(int num2){
  digitalWrite(digit1,HIGH);
  digitalWrite(digit2,LOW);
  for(int i=0;i<7;i++){
    digitalWrite(segs[i],numbers[num2][i]);
  }
}