volatile int *dirF, *outF,*dirK,*inputK;
volatile char myNum[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7f,0x6f};
volatile char alphabet[8]={0x77,0x7c,0x39,0x5e,0x79,0x71,0x3c,0x76};
volatile char chosNum[10]={0,2,4,6,8,9,7,5,3,1};
volatile long i,j,x,flag=0,count=9;
void myDelay();
void task8(int);
void countNum(char);
void setup() {
  // put your setup code here, to run once:
  dirF=0X30; dirK=0x107;
 *dirF=0xFF; *dirK=0x00;
 outF=0x31; inputK=0x106;
Serial.begin(9600);

}

void loop() {
  //Press any switch & display that number.
  //Ex: 1 - > 1, 2 ->2, ... 8 -> 8.
  
  if(*inputK!=0){
    task8(*inputK);
  
  }
}


void task1(volatile int x){
  Serial.println(x);
  switch(x){
    case 0x01:
    *outF=myNum[1];
    break;
    case 0x02:
    *outF=myNum[2];
    break;
    case 0x04:
    *outF=myNum[3];
    break;
    case 0x08:
    *outF=myNum[4];
    break;
    case 0x10:
    *outF=myNum[5];
    break;
    case 0x20:
    *outF=myNum[6];
    break;
    case 0x40:
    *outF=myNum[7];
    break;
    case 0x80:
    *outF=myNum[8];
    break;
    default:
    *outF=0x00;
  }
}

void task2(int x){
  Serial.println(x);
  switch(x){
    
    case 0x01:
    *outF=myNum[8];
    break;
    case 0x02:
    *outF=myNum[7];
    break;
    case 0x04:
    *outF=myNum[6];
    break;
    case 0x08:
    *outF=myNum[5];
    break;
    case 0x10:
    *outF=myNum[4];
    break;
    case 0x20:
    *outF=myNum[3];
    break;
    case 0x40:
    *outF=myNum[2];
    break;
    case 0x80:
    *outF=myNum[1];
    break;
    default:
    *outF=0x00;
  }
}
void task3(volatile int x){
  Serial.println(x);
  switch(x){
    case 0x01:
    countNum(1);
    break;
    case 0x02:
    countNum(2);
    break;
    case 0x04:
    countNum(3);
    break;
    case 0x08:
    countNum(4);
    break;
    case 0x10:
    countNum(5);
    break;
    case 0x20:
    countNum(6);
    break;
    case 0x40:
    countNum(7);
    break;
    case 0x80:
    countNum(8);
    break;
    default:
    *outF=0x00;
  }
}
void countNum(volatile char y){

while(*inputK==0){
for(j=y;j<10;j++){
  *outF=myNum[j];
  myDelay();
 
}
for(j=9;j>(y);j--){
  *outF=myNum[j];
  myDelay();
 
}
}
}

void task4(int x){

  if(x==0x40){
    for (i=0; i<10;i++){
      *outF=myNum[i];
      myDelay();
    }
    for (i=9; i>-1;i--){
      *outF=myNum[i];
      myDelay();
    }
    *outF=0x00;

  }
}

void task5(int x){

    for (i=0; i<9;i++){
      *outF=alphabet[i];
      myDelay();
    }
    *outF=0x00;
}

void task6(int x){
if(x==0x01){
  *outF=myNum[flag];
  flag++;
  Serial.println(flag);
  if(flag==10){flag=0;}
  myDelay();
}
}

void task7(int x){
  if(x==0x02){
  *outF=myNum[count];
  count--;
  if(count<0){count=9;}
  myDelay();
  }
}

void task8(int x){
  
  if(x==0x01){
    for(i=0;i<10;i++){
      *outF=myNum[i];
    if(*inputK==0x02){
    *outF=0x00;
    myDelay();
    break;
  }
      myDelay();
    }
  }
  

}
void myDelay(){
  for(j=0;j<200000;j++);
}