void setup() {
  // put your setup code here, to run once:
  volatile char *dir,*porta,*portc,*portf,*portk;

  dir = 0x21;
  *dir = 0xff;
  dir = 0x27;
  *dir = 0xff;
  dir = 0x30;
  *dir = 0x00;
  dir = 0x107;
  *dir = 0x0f;

  porta = 0x22;
  portc = 0x28;
  portf = 0x2f;
  portk = 0x108;

  char val[][3] = {{0x06,0x5b,0x4f},{0x66,0x6d,0x7d},{0x07,0x7f,0x6f}};
  char pos;
while(1)
{
    for(int j = 0 ;j < 3;j++)
    {
      //  *portk = 1 << j;
       if((*portf & 0x0f) != 0)
       {
          if((*portf  & 0x0f) == 0x01)
          pos = 0;
          else if((*portf  & 0x0f) == 0x02)
          pos = 1;
          else if((*portf  & 0x0f) == 0x04)
          pos = 2;
          
          for(volatile long i = 0;i<40000;i++)
          {
              *portc = 0xfe;
              *porta =0x3f;
              *porta = 0x00;

              *portc = 0xfd;
              *porta = val[j][pos];
              *porta = 0x00;
          }
          delay(100);
       }
      
    }


}     

}

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

}