//34. Press any switch glow 7th LED, delay,6th LED, delay …
void setup() {
  volatile char *ddrf,*ddrk;

  ddrf=0x30;
  ddrk=0x107;
  *ddrf=0xff;
  *ddrk=0x00;
  
}
void loop() {
  volatile uint32_t *ink,*outf;
  outf=0x31;
  ink=0x106;
  volatile uint32_t i,x,j,v,add=128;
  x=*ink;
  for(i=1;i<=128;i=i*2){
  if((x&i)==i){
    for(v=128;v<=255;v=v+add){
      *outf=v;
      for(j=0;j<=400000;j++);
      add=add/2;
      if(add==0){
         *outf=0;
          break;
        }
      }
    }
  }
}