#define ABLEPIN 16
#define SIMULPIN 17
#define OUTPIN 4

void setup() {
  Serial.begin(115200);
  pinMode(ABLEPIN, OUTPUT);
  pinMode(SIMULPIN, OUTPUT);
  pinMode(OUTPIN, INPUT);
  Serial.println("Hello, ESP32!");
}

void loop() {
  digitalWrite(ABLEPIN,HIGH);
  digitalWrite(SIMULPIN,LOW);
  Serial.println(digitalRead(OUTPIN));
  delay(500);
  digitalWrite(SIMULPIN,HIGH);
  Serial.println(digitalRead(OUTPIN));
  delay(500);
  digitalWrite(ABLEPIN,LOW);
  digitalWrite(SIMULPIN,LOW);
  Serial.println(digitalRead(OUTPIN));
  delay(500);
  digitalWrite(SIMULPIN,HIGH);
  Serial.println(digitalRead(OUTPIN));
  delay(1000); 
}