#include <stdio.h>
#define LED_1 0
#define LED_2 1
#define LED_3 2
#define BUTTON 3

int trigger = 1;


void setup() {
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  pinMode(LED_3, OUTPUT);
  pinMode(BUTTON, INPUT_PULLUP);
}

void loop() {
  switch(trigger) {
    case 1: 
      digitalWrite(LED_1, HIGH);
      digitalWrite(LED_2, LOW);
      digitalWrite(LED_3, LOW);
      printf("100");
      break;
    case 2: 
      digitalWrite(LED_1, LOW);
      digitalWrite(LED_2, HIGH);
      digitalWrite(LED_3, LOW);
      printf("010");
      break;
    case 3: 
      digitalWrite(LED_1, LOW);
      digitalWrite(LED_2, LOW);
      digitalWrite(LED_3, HIGH);
      printf("001");
      break;
  }
}

int main() {
  

  while(1) {
    int button_state = digitalRead(BUTTON);
    delay(1000);
    if (button_state == HIGH){
      trigger++;
    }
  }
}