#include <Arduino.h>
#include <DHT.h>
#include <OneWire.h>
#include <DallasTemperature.h>

// Pin definisi
#define MQ4_PIN       PA0
#define PH_PIN        PA1
#define SOIL_PIN      PA2
#define DHT_PIN       PA3
#define DS18B20_PIN   PA4  // Pilih pin bebas untuk DS18B20

// Inisialisasi DHT
#define DHTTYPE DHT22
DHT dht(DHT_PIN, DHTTYPE);

// Inisialisasi DS18B20
OneWire oneWire(DS18B20_PIN);
DallasTemperature ds18b20(&oneWire);

void setup() {
  Serial.begin(9600);
  dht.begin();
  ds18b20.begin();

  pinMode(MQ4_PIN, INPUT);
  pinMode(PH_PIN, INPUT);
  pinMode(SOIL_PIN, INPUT);
}

void loop() {
  // === 1. Baca nilai analog ===
  int mq4ADC = analogRead(MQ4_PIN);
  int phADC = analogRead(PH_PIN);
  int soilADC = analogRead(SOIL_PIN);

  // === 2. Konversi satuan ===
  float mq4_ppm = map(mq4ADC, 0, 1023, 200, 10000);
  float phValue = (phADC / 1023.0) * 14.0;
  float soilPercent = map(soilADC, 1023, 0, 0, 100);

  // === 3. Baca DHT22 ===
  float tempC = dht.readTemperature();
  float humidity = dht.readHumidity();

  // === 4. Baca DS18B20 ===
  ds18b20.requestTemperatures();
  float tempDS = ds18b20.getTempCByIndex(0);  // sensor ke-0

  // === 5. Tampilkan data ===
  Serial.println("=== Hasil Baca Sensor ===");
  Serial.print("MQ-4 (Metana): ");
  Serial.print(mq4_ppm); Serial.println(" ppm");

  Serial.print("pH Air/Tanah  : ");
  Serial.print(phValue, 2); Serial.println(" pH");

  Serial.print("Kelembapan Tanah: ");
  Serial.print(soilPercent); Serial.println(" %");

  Serial.print("Suhu DHT22     : ");
  Serial.print(tempC); Serial.println(" °C");

  Serial.print("Suhu DS18B20   : ");
  Serial.print(tempDS); Serial.println(" °C");

  Serial.print("Kelembapan RH  : ");
  Serial.print(humidity); Serial.println(" %");

  Serial.println("========================\n");

  delay(1500);
}