#include <WiFi.h>
#include <WiFiUdp.h>
const char* ssid = "your_wifi_ssid";  // Replace with your Wi-Fi credentials
const char* password = "your_wifi_password";
const char* serverIP = "192.168.1.46";  // Raspberry Pi's IP address
const int serverPort = 8888;

WiFiUDP udp;
void setup() {
  Serial.begin(115200);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
      
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  udp.beginPacket(serverIP, serverPort);
  udp.print("Request humidity data");  // Send your desired message here
  udp.endPacket();

  delay(1000);  // Wait for response

  int packetSize = udp.parsePacket();
  if (packetSize) {

    char buffer[255];
    int len = udp.read(buffer, sizeof(buffer));
    if (len > 0) {
      buffer[len] = '\0';
      Serial.print("Received response: ");
      Serial.println(buffer);
    }
  }

  delay(10); // this speeds up the simulation
}
/* 
 * This ESP32 code is created by esp32io.com
  * 
   * This ESP32 code is released in the public domain
    * 
     * For more detail (instruction and wiring diagram), visit [here](https://esp32io.com/tutorials/esp32-temperature-humidity-sensor)
      */

#include <DHT.h>

#define DHT_SENSOR_PIN 16  // ESP32 pin GPIO21 connected to DHT22 sensor
#define DHT_SENSOR_TYPE DHT22

DHT dht_sensor(DHT_SENSOR_PIN, DHT_SENSOR_TYPE);

void setup() {
  Serial.begin(9600);
  dht_sensor.begin();  // initialize the DHT sensor
}

void loop() {
  // Read humidity
  float humidity = dht_sensor.readHumidity();

  // Read temperature in Celsius
  float tempC = dht_sensor.readTemperature();

  // Read temperature in Fahrenheit
  float tempF = dht_sensor.readTemperature(true);

  // Check whether the reading is successful or not
  if (isnan(tempC) || isnan(tempF) || isnan(humidity)) {
    Serial.println("Failed to read from DHT sensor!");
  } else {
    Serial.print("Humidity: ");
    Serial.print(humidity);
    Serial.print("% | ");
    Serial.print("Temperature: ");
    Serial.print(tempC);
    Serial.print("°C ~ ");
    Serial.print(tempF);
    Serial.println("°F");
  }


  delay(2000);
}