#include "WiFi.h" // Use WiFi library for ESP8266 in Wokwi

const int trigPin = 0;  // ESP12 digital output pin (connected to HC-SR04 TRIG)
const int echoPin = 1;  // ESP12 digital input pin (connected to HC-SR04 ECHO)

const int maxDistanceCm = 200; // Maximum sensing distance of your HC-SR04 sensor (adjust based on sensor)

void setup() {
  Serial.begin(9600); // Optional for debugging
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  long duration = pulseIn(trigPin, HIGH, maxDistanceCm * 29.1); // Send trigger pulse and measure echo duration

  if (duration != 0) {
    int distanceCm = duration / (2 * 29.1); // Convert echo duration to distance in cm
    Serial.print("Distance (cm): ");
    Serial.println(distanceCm);
  } else {
    Serial.println("Timeout: Object too far or sensor malfunction");
  }

  delay(5000); // Delay between measurements (e.g., 5 seconds)
}