#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>

#define DHTPIN 2       // Pin where the DHT11 sensor is connected
#define DHTTYPE DHT11  // Type of the DHT sensor

DHT_Unified dht(DHTPIN, DHTTYPE);

#define TRIGGER_PIN 23  // Pin for the ultrasonic sensor's trigger
#define ECHO_PIN 22     // Pin for the ultrasonic sensor's echo

long duration;
int distance;

void setup() {
  Serial.begin(115200);
  
  // Initialize DHT sensor
  dht.begin();

  // Ultrasonic sensor pins
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop() {
  // Read temperature and humidity from DHT sensor
  sensors_event_t event;
  dht.temperature().getEvent(&event);
  float temperature = event.temperature;
  dht.humidity().getEvent(&event);
  float humidity = event.relative_humidity;

  // Print temperature and humidity
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.print(" °C, Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  // Read distance from ultrasonic sensor
  distance = getDistance();
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");

  delay(2000); // Delay for 2 seconds
}

int getDistance() {
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);

  duration = pulseIn(ECHO_PIN, HIGH);
  distance = duration * 0.034 / 2;

  return distance;
}