void setup() {
  // put your setup code here, to run once:
  volatile char *dirf;
  volatile char *outf;
  volatile long i;
  dirf = 0x30;
  outf = 0x31;
  *dirf = 0xFF;
  /*while(1)
  {
    *outf = 0x01;
    delay(1000);
    *outf = 0x03;
    delay(1000);
    *outf = 0x07;
    delay(1000);
    *outf = 0x0F;
    delay(1000);
    *outf = 0x1F;
    delay(1000);
    *outf = 0x3F;
    delay(1000);
    *outf = 0x7F;
    delay(1000);
    *outf = 0xFF;
    delay(1000);
  }*/
  /*while(1)
  {
    *outf = 0x03;
    delay(1000);
    *outf = 0xC0;
    delay(1000);
    *outf = 0x0C;
    delay(1000);
    *outf = 0x30;
    delay(1000);
  }*/
  while(1){
    for(i=0;i<8;i++)
    {
      *outf |= 0x80>>i;
      delay(1000);
    }
    if(i==8)
    {
      //*outf = 0x80;
      i=0;
      *outf = 0x80;
    }
  }
    /*for(i=0;i<8;i++)
    {
      *outf = 0x80>>i;
      delay(1000);
    }
  }*/
  /*while(1){
  //*outf = 0x88;
  *outf = 0x11;
  delay(1000);
  //*outf = 0x44;
  *outf = 0x22;
  delay(1000);
  //*outf = 0x22;
  *outf = 0x44;
  delay(1000);
  //*outf = 0x11;
  *outf = 0x88;
  delay(1000);
  }*/


}

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

}