#include <WiFi.h>
#include <PubSubClient.h>

WiFiClient espClient;
PubSubClient client(espClient);
int counter = 0;

void setup() {
  Serial.begin(115200);
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) delay(500);

  client.setServer("broker.hivemq.com", 1883);
  while (!client.connected()) {
    client.connect("esp32-academy");
    delay(500);
  }
  Serial.println("به بروکر MQTT متصل شد");
}

void loop() {
  client.loop();   // نگه‌داشتن اتصال زنده

  counter++;
  String payload = "سلام شماره " + String(counter);
  client.publish("esp32-academy/demo", payload.c_str());
  Serial.println("ارسال شد: " + payload);
  delay(3000);
}

#include <WiFi.h>
#include <PubSubClient.h>
#include <DHT.h>

#define DHT_PIN 15
DHT dht(DHT_PIN, DHT22);
WiFiClient espClient;
PubSubClient client(espClient);

void setup() {
  Serial.begin(115200);
  dht.begin();
  WiFi.begin("Wokwi-GUEST", "");
  while (WiFi.status() != WL_CONNECTED) delay(500);
  client.setServer("broker.hivemq.com", 1883);
}

void loop() {
  if (!client.connected()) {
    client.connect("esp32-weather");
  }
  client.loop();

  float t = dht.readTemperature();
  float h = dht.readHumidity();
  if (!isnan(t) && !isnan(h)) {
    String payload = String(t) + "," + String(h);
    client.publish("wokwi-weather", payload.c_str());
    Serial.println("ارسال شد: " + payload);
  }
  delay(5000);
}