//Assignment 1:
void setup() {
  // put your setup code here, to run once:
  volatile char *dir;
  dir=0x30;
  //setting pin as output
  *dir=0xFF;
}
void LSB_LED_only(volatile char *out){
  *out|=0x01;
}
void MSB_LED_only(volatile char *out){
 *out|=(1<<7);
}
void LEDs(volatile char *out){
  *out|=0xFF;
}
void MSB_LEDs_only(volatile char *out){
*out|=(1<<6)|(1<<7);
}
void LSB_LEDs_only(volatile char *out){
  *out|=0x0F;
}
void ODD(volatile char *out){
  *out|=0xAA;
}
void EVEN(volatile char *out){
  *out|=~(0xAA);
}
void few(volatile char *out){
  *out|=(1<<7)|(1<<4)|(1<<3)|(1<<1);
}
void loop() {
  // put your main code here, to run repeatedly:
  volatile char *out;
  out=0x31;
  //odd+even
  //*out|=0xAA;even places
//*out|=0xFF-(0xAA);odd places
//*out|=0xFF-0x3F;
//*out|=0x9A;
uint64_t value=0;
value=8;
switch(value){
  case 1:
  LSB_LED_only(out);
  break;
  case 2:
  MSB_LED_only(out);
  break;
  case 3:
  LEDs(out);
  break;
  case 4:
  MSB_LEDs_only(out);
  break;
  case 5:
  LSB_LEDs_only(out);
  break;
  case 6:
  ODD(out);
  break;
  case 7:
  EVEN(out);
  break;
  case 8:
  few(out);
  break;
  default:
  break;
}
}