#include <DHT.h>

#define DHTPIN 25     // Digital pin connected to the DHT sensor
#define DHTTYPE DHT22 // Type of the DHT sensor (DHT11, DHT22)
#define BUTTON_PIN 12
#define LED_PIN 13    // Change to a different pin for LED

DHT dht(DHTPIN, DHTTYPE); // Initialize DHT sensor
bool previousButtonState = HIGH; // Variable to store the previous state of the button

void button(bool pressed) {
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature(); // Read temperature in Celsius

  // Check if any reads failed and exit early (to try again).
  if (isnan(humidity) || isnan(temperature)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  if (pressed) {
    digitalWrite(LED_PIN, HIGH);
    Serial.print(F("Temperature: "));
    Serial.println(temperature);
  } else {
    digitalWrite(LED_PIN, LOW);
    Serial.print(F("Humidity: "));
    Serial.println(humidity);
  }
}

void setup() {
  Serial.begin(115200);
  dht.begin(); // Initialize DHT sensor
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  delay(50); // Add a small delay to debounce the button
  
  // Read the current state of the button
  bool currentButtonState = digitalRead(BUTTON_PIN);
  
  // Check if the button state has changed
  if (currentButtonState != previousButtonState) {
    // Execute instructions only once when the button value changes
    button(currentButtonState == LOW); // Pass true if button is pressed, false otherwise
  }
  
  // Update the previous button state
  previousButtonState = currentButtonState;
}