#define BLYNK_TEMPLATE_ID "TMPL3Y7pXgOxa"
#define BLYNK_TEMPLATE_NAME "dht sensor"
#define BLYNK_AUTH_TOKEN "mbm543mSznjxlycZOuWzayB9AVFsCpzm"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

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

#define DHTPIN 4
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);

#define TEMP V0
#define Hum V1

float h;
float t;
int threshold=50;

bool tempAlertSent = false;


void setup() {
  Serial.begin(115200);
  dht.begin();
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

}

void loop() {
  Blynk.run();

   h = dht.readHumidity();
   t = dht.readTemperature();

  Blynk.virtualWrite(TEMP,t);
  Blynk.virtualWrite(Hum,h);

if(t>50 && !tempAlertSent)
{
  Serial.println("Temperature is high");
  Blynk.logEvent("temperature_alert");
  tempAlertSent= true;
}
else if(t<50)
{
  Serial.println("Temperature is low");
  tempAlertSent= false;
}
  Serial.print("Temperature :");
  Serial.println(t);
  Serial.print("||");
  Serial.print("Humidity: ");
  Serial.println(h);
delay(1000);
 
}