void setup() {
  // put your setup code here, to run once:
  DDRA = 0xFF;
  DDRC = 0xFF;
  Serial.begin(115200);
} 

void loop() {
  // put your main code here, to run repeatedly:
  for (int i =7; i>=0 ;i--){
  PORTC |= (B00000001 << i);
  //PORTC |= 0x01 << i;
  delay(300);
  //Serial.println(PORTC , BIN);
  }
  //PORTC = B1111 1111
  for( int i =0 ;i<8;i++){
    PORTA ^= (B00000001 << i);
    delay(300);
  }
    //iteration 1 PORTC (Original)= 1111 1111
    //iteration 1   bit = 0000 0001
    //iteration 1 result= 

  PORTC = 0x00;
  PORTA = 0x00;
  delay(300);
}