#include <DHT.h>
#define DHTPIN 5          // Pin yang terhubung ke DHT22
#define DHTTYPE DHT22     // Jenis sensor DHT (DHT22)
DHT dht(DHTPIN, DHTTYPE);

const int trigPin = 7;    // Pin trigger HC-SR04
const int echoPin = 8;   // Pin echo HC-SR04

static unsigned long timer1 = 0;
static unsigned long timer2 = 0;

const long SensorInterval = 1000;
const long ShowInterval = 2000;

#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#include <Wire.h>

int showMode = 0;
int h, t;
float duration, distance1, distance2;

void setup() {
  Serial.begin(115200);
  dht.begin();
  lcd.init();
  lcd.backlight();
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
}

void loop() {
  if (millis() - timer1 >= SensorInterval) {
    timer1 = millis();
    sensor_dht22();
    sensor_hcsr();
    //Serial.println("data sensor tiap detik");
  }
  if (millis() - timer2 >= ShowInterval) {
    if (showMode == 0) {
      lcd.clear();
      tampil_dht22();
    }
    else if (showMode = 1) {
      lcd.clear();
      tampil_hcsr();
    }
    showMode += 1;
    if (showMode > 1) {
      showMode = 0;
    }
    timer2 = millis();
  }

}
void sensor_dht22() {
  h = dht.readHumidity();
  t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
}

void sensor_hcsr() {
  digitalWrite(trigPin, LOW); delayMicroseconds (2);
  digitalWrite(trigPin, HIGH); delayMicroseconds (10);
  digitalWrite(trigPin, LOW);
  duration = pulseIn(echoPin, HIGH);
  distance1 = duration * 0.034 / 2;
  distance2 = (distance1 * 1.041) - 0.7605;
}

void tampil_dht22() {
  lcd.setCursor(0, 0);
  lcd.print("T: ");
  lcd.print(t);
  lcd.print(" *C");

  lcd.setCursor(0, 1);
  lcd.print("H: ");
  lcd.print(h);
  lcd.print(" %");

  Serial.print("DHT22 - Temperature: ");
  Serial.print(t);
  Serial.print("°C, Humidity: ");
  Serial.print(h);
  Serial.println("%");
}

void tampil_hcsr() {
  lcd.setCursor(0, 1);
  lcd.print("Tandon: ");
  lcd.print(" PENUH");

  Serial.print("HC-SR04 - Distance: ");
  Serial.print(distance1);
  Serial.println(" cm");
}