/* DHT Temperature and Humidity Sensor */
#include "DHT.h"
#define DHTPIN 23  
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);
float localHum = 0;
float localTemp = 0;

/* LED */
#define LED_PIN 2

// Analog Input (Changed from 36 to 34)
#define ANALOG_PIN_0 34
int analog_value = 0;

void setup() {
  Serial.begin(115200);
  pinMode(LED_PIN, OUTPUT); 
  dht.begin();

  Serial.println("System initialized.");
}

void loop() {
  analog_value = analogRead(ANALOG_PIN_0);
  getDHT();

  // Print data to Serial Monitor
  Serial.print("Temperature: ");
  Serial.print(localTemp);
  Serial.print(" °C | Humidity: ");
  Serial.print(localHum);
  Serial.print(" % | Analog: ");
  Serial.print(analog_value);
  Serial.print(" | LED: ");
  Serial.println(digitalRead(LED_PIN) ? "ON" : "OFF");

  // Optional: Control LED with analog threshold
  if (analog_value > 2000) {
    digitalWrite(LED_PIN, HIGH);
  } else {
    digitalWrite(LED_PIN, LOW);
  }

  delay(2000); // Delay for readability
}

/***************************************************
 * Get indoor Temp/Hum data
 ****************************************************/
void getDHT() {
  float tempIni = localTemp;
  float humIni = localHum;
  localTemp = dht.readTemperature();
  localHum = dht.readHumidity();
  if (isnan(localHum) || isnan(localTemp)) {
    localTemp = tempIni;
    localHum = humIni;
    Serial.println("Failed to read from DHT sensor!");
  }
}