/* * Lab 1 - Task 6: Digital Sensor (DHT22)
 * Objective: Read temperature and humidity using the DHT library.
 */

#include "DHT.h"

#define DHTPIN 15        // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22    // Define the sensor type: DHT22 (AM2302)

// Initialize DHT sensor
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);
  Serial.println("Task 6 Ready: DHT22 Sensor Test!");

  dht.begin();           // Start the DHT sensor
}

void loop() {
  // Wait a few seconds between measurements.
  // The DHT22 requires about 2 seconds to process new data.
  delay(2000);

  // Reading temperature or humidity takes about 250 milliseconds!
  // Read humidity as percentage
  float humidity = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float temperature = dht.readTemperature();

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println("Failed to read from DHT sensor! Check wiring.");
    return; // Stop the rest of the loop and start over
  }

  // Display the results on the Serial Monitor
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print(" %\t");
  Serial.print("Temperature: ");
  Serial.print(temperature);
  Serial.println(" °C");
}