#include <DHT.h>

#define DHTPIN D7
#define DHTTYPE DHT22

#define LED_PIN D8

DHT dht(DHTPIN, DHTTYPE);

void setup()
{
  Serial.begin(115200);

  pinMode(LED_PIN, OUTPUT);

  dht.begin();

  Serial.println("STM32 DHT11 Temperature Monitoring");
  Serial.println("-----------------------------------");
}

void loop()
{
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  if (isnan(temperature) || isnan(humidity))
  {
    Serial.println("DHT11 Sensor Error");

    digitalWrite(LED_PIN, LOW);

    delay(2000);
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");

  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.println(" %");

  if (temperature > 32)
  {
    digitalWrite(LED_PIN, HIGH);
    Serial.println("WARNING: High Temperature!");
  }
  else
  {
    digitalWrite(LED_PIN, LOW);
    Serial.println("Temperature Normal");
  }

  Serial.println("-------------------------");

  delay(2000);
}