#include <avr/io.h>

void setup() {
  DDRB |= (1 << PB0);  // pinMode; DDRB = Data Direction Register (Port B), PB0 = 0, 1 = OUTPUT, 0 = INPUT
  PORTB |= (1 << PB0); // digitalWrite

  DDRD |= (1 << PD7);
  PORTD &= ~(1 << PD7);
}

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

}