//06 Initially display 0.
//When switch 1 is pressed every time increment by 1
void setup() {
  // put your setup code here, to run once:
 direction();
}

void loop() {
  // put your main code here, to run repeatedly:
code();
}
//************************
void delay_()
{
  volatile long i;
  for(i=0;i<500000;i++);
}

void direction()
{
  volatile char *dirf,*dirk,*dira;
  dirf = 0x30; dirk = 0x107;dira =0x21;
  *dirf = 0xFF; dirk = 0xFE;*dira = 0x01;
}
void code()
{
  volatile char *outf,*ink,*outa,x;
  outf = 0x31; ink =0x106; outa = 0X22;
  x =0x00;
  *outf = 0x3f;
  while(1){
  *outa = 0x00;
  if(*ink==1)  {x= x+1;delay_();}
  else     { x = x;*outa = 0x01;}
  if(x == 0x01) *outf = 0x06;
  if(x == 0x02) *outf = 0x5B;
  if(x == 0x03) *outf = 0x4F;
  if(x == 0x04) *outf = 0x66;
  if(x == 0x05) *outf = 0x6D;
  if(x == 0x06) *outf = 0X7D;
  if(x == 0x07) *outf = 0x07;
  if(x == 0x08) *outf = 0x7F;
  if(x == 0x09) *outf = 0x6F;
  if(x>9)      {*outf = 0x3F; x = 0;}
  else    *outf = *outf;
  
  }
}