int LED_VERMELHO = 25;
int LED_AMARELO = 26;
int LED_VERDE = 27;

bool ledState[] = {LOW,LOW,LOW};
unsigned long currentTime = 0;
unsigned long previousTime[] = {0,0,0};

int leds[] ={25,26,27};

void setup(){
  
  for(int i = 0; i < 3; i++){
  	pinMode(leds[i], OUTPUT);
  }
}


void tarefa(int pin, int interval){
  //Serial.println(pin);
  currentTime = millis();
  //interval /= 2;
  if((currentTime - previousTime[pin]) >= interval) {
  	previousTime[pin] = currentTime;
    bool state = !ledState[pin];
    ledState[pin] = state;
    digitalWrite(leds[pin], state);
  }
  
}


void loop()
{	
  
  tarefa(0, 2000);
  tarefa(1, 1000);
  tarefa(2, 500);
  
  	
}