// void setup() {
//   // put your setup code here, to run once:
//   DDRD |= 0xFF;
//   while(1)
//     PORTB |= 0x5;
// }

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

// }

int main(void)
{
  Serial.begin(9600);
  uint8_t mask1 = 0x2, mask2 = 0x4;
  DDRD |= 0xFC;
  DDRB |= 0x7;
  while(1)
  {
    PORTB &= ~(mask2);
    PORTB |= mask1;
    PORTB |= 1;
    PORTD |= 0xFC;
    PORTD &= 0xE4;
    // _delay_ms(1000);
    PORTB &= ~(mask1);
    PORTB |= mask2;
    PORTB &= ~(0x1);
    PORTD |= 0xFC;
    PORTD &= 0x38;
    // _delay_ms(1000);
  }
  return 0;
}