const char digitPatterns[10] = {
  0b00111111, // 0
  0b00000110, // 1
  0b01011011, // 2
  0b01001111, // 3
  0b01100110, // 4
  0b01101101, // 5
  0b01111101, // 6
  0b00000111, // 7
  0b01111111, // 8
  0b01101111  // 9
};
void setup() {
  // put your setup code here, to run once:
  volatile char *direction_f,*output_f;
  volatile char *direction_k,*input_k;
  volatile long long i,j,k;
  direction_k=0x107;
  direction_f=0x30;
  *direction_f=0xff;
  *direction_k=0x00;
  input_k=0x106;
  output_f=0x31;
  while(1){
    volatile int trace=*input_k;
    if(trace&0x01){
      *output_f=digitPatterns[1];
      
      }
     else  if(trace&0x02){
      *output_f=digitPatterns[2];
       
      }
      else if(trace&0x04){
      *output_f=digitPatterns[3];
       
      }
      else if(trace&0x08){
      *output_f=digitPatterns[4];
       
      }
      else if(trace&0x10){
      *output_f=digitPatterns[5];
       
      }
      else if(trace&0x20){
      *output_f=digitPatterns[6];
      
      }
     else  if(trace&0x40){
      *output_f=digitPatterns[7];
     }
     else  if(trace & 0x80){
      *output_f=digitPatterns[8];
      
      }
      else {
        *output_f=0x00;
      }
      for(long long i=0;i<200000;i++);
   }
}
   



void loop() {
  // put your main code here, to run repeatedly:
}