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

const int redLedPin = 32;
const int blueLedPin = 33;
const int greenLedPin = 25;
const int buzzerPin = 26;

void setup()
{
  Wire.begin(23, 22);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();

  pinMode(redLedPin, OUTPUT);
  pinMode(blueLedPin, OUTPUT);
  pinMode(greenLedPin, OUTPUT);
  pinMode(buzzerPin, OUTPUT);
}

void loop()
{
  int16_t sensorValue = analogRead(34);
  float humidityPercent = map(sensorValue, 2165, 3135, 0, 100);
  String msg;

  if (humidityPercent < 40){
    msg = "KERING";
    digitalWrite(redLedPin, HIGH);
    digitalWrite(blueLedPin, LOW);
    digitalWrite(greenLedPin, LOW);
    tone(buzzerPin, 300);

  } else if (humidityPercent > 60) {
    msg = "BASAH";
    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, LOW);
    digitalWrite(greenLedPin, HIGH);
    tone(buzzerPin, 1000);

  } else {
    msg = "BAIK";
    digitalWrite(redLedPin, LOW);
    digitalWrite(blueLedPin, HIGH);
    digitalWrite(greenLedPin, LOW);
    noTone(buzzerPin);
  }

  lcd.clear();
  lcd.print("Kelembapan Tanah");
  lcd.print(msg);
  lcd.setCursor(0, 1);
  lcd.print("Presentase : ");
  lcd.print(humidityPercent);
  lcd.print("%");
  delay(500);
}