int seg = 0;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("ESP32 - Saida Digital --> Porta Serial");
  pinMode(17, OUTPUT);
  pinMode(18, OUTPUT);
}

void loop() {
if(digitalRead(16)==0){
    delay(900);
    seg++;
    Serial.println(seg);
    if (seg>10){
                seg=0;
                }
    }
if (digitalRead(16)==1){
      if (seg==5 or seg == 6){
        digitalWrite(17, HIGH);
        digitalWrite(18, LOW);
      } else {
              if(seg ==9 or seg == 10){
                  digitalWrite(18, HIGH);
                  digitalWrite(17, LOW);
                  } else {
                    digitalWrite(18, LOW);
                    digitalWrite(17, LOW);
                    }
          } 
        }
}