#define BLYNK_TEMPLATE_ID "TMPL6DGJ6O4uH"
#define BLYNK_TEMPLATE_NAME "ESP32 DHT22"
#define BLYNK_AUTH_TOKEN "c9NutiSq6bdQf-oiZTy2JmxT8FQ2JkHi"

#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#include <DHT.h>

char auth[] = BLYNK_AUTH_TOKEN;

char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define DHTPIN 5          // Mention the digital pin where you connected 
#define DHTTYPE DHT22     // DHT 11  
DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;

void setup() {
  Serial.begin(115200);
  Serial.println("<<<<<< ESP32 + Blynk >>>>>>");

  Blynk.begin(auth, ssid, pass);

  dht.begin();
  timer.setInterval(2500L, sendSensor);
}

void loop() {
  Blynk.run();
  timer.run();
}

void sendSensor() {
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit
  float f = dht.readTemperature(true); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Blynk.virtualWrite(V1, h);
  Blynk.virtualWrite(V0, t);
  Blynk.virtualWrite(V2, f);
  Serial.println("==================");
  Serial.print("Celcius    : ");
  Serial.println(t);
  Serial.print("Fahrenheit : ");
  Serial.println(f);
  Serial.print("Humidity   : ");
  Serial.println(h);

  //if (t > 40) {
  //Blynk.email("[email protected]", "Alert", "Temperature over 40C!");
  //Blynk.logEvent("temp_alert", "Temp above 40 degrees");
  //}
}