#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <DHT.h>

#define ECHO_PIN 16
#define TRIG_PIN 17
#define LedH 15
#define LedK 4
#define LedM 19

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64

#define DHT_PIN 18 // Pin to which the DHT22 sensor is connected
#define DHT_TYPE DHT22

Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
DHT dht(DHT_PIN, DHT_TYPE);

// Map function to scale a value from one range to another
float mapValue(float x, float in_min, float in_max, float out_min, float out_max) {
  return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}

void setup() {
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("failed to start SSD1306 OLED"));
    while (1);
  }

  delay(3000);
  oled.clearDisplay();

  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0, 2);
  oled.println("Argentino Saviola Putra");
  oled.display();

  Serial.begin(9600);
  pinMode(ECHO_PIN, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(LedH, OUTPUT);
  pinMode(LedK, OUTPUT);
  pinMode(LedM, OUTPUT);

  dht.begin();
}

float ultrasonik() {
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  int duration = pulseIn(ECHO_PIN, HIGH);
  return duration * 0.034 / 2;
}

void loop() {
  oled.clearDisplay();

  // Baca data ultrasonik
  float jarak = ultrasonik();

  // Tampilkan data ultrasonik
  if (jarak > 250) {
    digitalWrite(LedH, HIGH);
    digitalWrite(LedK, LOW);
    digitalWrite(LedM, LOW);
    Serial.println("Air Rendah");
    Serial.print("Nilai Jarak :");
    Serial.print(jarak);
    Serial.println("cm      ");
    oled.setTextSize(1);
    oled.setTextColor(WHITE);
    oled.setCursor(0, 2);
    oled.print("Jarak Air: Rendah    ");
    oled.print(jarak);
    oled.println(" cm   ");
  } else if (jarak <= 250 && jarak > 100) {
    digitalWrite(LedK, HIGH);
    digitalWrite(LedH, LOW);
    digitalWrite(LedM, LOW);
    Serial.println("Air Sedang");
    Serial.print("Nilai Jarak :");
    Serial.print(jarak);
    Serial.println("cm      ");
    oled.setTextSize(1);
    oled.setTextColor(WHITE);
    oled.setCursor(0, 2);
    oled.println("Jarak Air: Sedang");
    oled.print(jarak);
    oled.println(" cm   ");
  } else if (jarak <= 100) {
    digitalWrite(LedM, HIGH);
    digitalWrite(LedK, LOW);
    digitalWrite(LedH, LOW);
    Serial.println("Air Tinggi");
    Serial.print("Nilai Jarak :");
    Serial.print(jarak);
    Serial.println("  cm      ");
    oled.setTextSize(1);
    oled.setTextColor(WHITE);
    oled.setCursor(0, 2);
    oled.println("Jarak Air: Tinggi");
    oled.print(jarak);
    oled.println(" cm   ");
  }

  // Baca data DHT22
  float humidity = dht.readHumidity();
  float temperature = dht.readTemperature();

  // Map the temperature value to a new range (e.g., from -40 to 160)
  float mappedTemperature = mapValue(temperature, -40, 80, -40, 160);

  // Tampilkan data DHT22
  Serial.print("Humidity: ");
  Serial.print(humidity);
  Serial.print("%   ");
  Serial.print("Temp: ");
  Serial.print(mappedTemperature);
  Serial.println("C");

  // Display DHT22 values on OLED
  oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0, 30);
  oled.print("Humidity: ");
  oled.print(humidity);
  oled.print("%   ");
  oled.print("  Temp: ");
  oled.print(mappedTemperature);
  oled.println("C");

  oled.display();
  delay(3000);  // Ubah delay menjadi 3000 agar data diperbarui setiap 3 detik
}