#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define DHTPIN 12
#define DHTTYPE DHT22

#define TRIG 6 //output
#define ECHO 7 //input

LiquidCrystal_I2C lcd(0x27,16,2);

DHT dht(DHTPIN, DHTTYPE);

long duration, cm;

void setup() {
  // put your setup code here, to run once:
  dht.begin();
  lcd.init();
  lcd.backlight();

  pinMode(TRIG, OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);
  // lcd.setCursor(0,0);
  // lcd.print("Halo");
  // lcd.setCursor(0,1);
  // lcd.print("Hai");
}

void loop() {
  // put your main code here, to run repeatedly:
  int pot = analogRead(A0);
  int ldr = analogRead(A1);
  int hasilUkur = jarak(TRIG, ECHO);

  float temp = dht.readTemperature();
  float hum = dht.readHumidity();

  lcd.setCursor(0,0);
  lcd.print("p: ");
  lcd.print(pot);
  // lcd.clear();
  lcd.print(" ");
  lcd.print("|");
  // lcd.setCursor(0,1);
  lcd.print("l: ");
  lcd.print(ldr);
  // lcd.clear();
  lcd.print("   ");

  jarak(TRIG, ECHO);

  // lcd.setCursor(0,0);
  // lcd.print("temp: ");
  // lcd.print(temp);
  // // lcd.clear();
  // lcd.print("         ");

  // lcd.setCursor(0,1);
  // lcd.print("hum: ");
  // lcd.print(hum);
  // // lcd.clear();
  // lcd.print("         ");

  // lcd.setCursor(0,1);
  // lcd.print("hum: ");
  // lcd.print(hum);
  // // lcd.clear();
  // lcd.print("         ");

  lcd.setCursor(0,1);
  lcd.print("jarak: ");
  lcd.print(hasilUkur);
  // lcd.clear();
  lcd.print("         ");

  if(hasilUkur > 50){
    digitalWrite(13, LOW);
    digitalWrite(12, HIGH);
  } else if(hasilUkur > 100){
    digitalWrite(13, HIGH);
    digitalWrite(12, LOW);
  } else if(hasilUkur > 150){
    digitalWrite(13, HIGH);
    digitalWrite(12, HIGH);
  }
}

int jarak(int trig, int echo){
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(5);
  digitalWrite(trig, LOW);

  duration = pulseIn(echo, HIGH);

  // return cm = duration / 29 / 2;
  return cm = duration * 0.0343 / 2;
}