//Prototipe Climatic Chamber Berbasis Humifier dan Pemanas Sederhana dengan Sistem Kontrol

#include <LiquidCrystal_I2C.h>
#include <DHT.h>
#include <Keypad.h>
#include <Wire.h>
#define DHTPIN 7
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);

const byte ROWS = 4;
const byte COLS = 4;
char keys[ROWS] [COLS] = {
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte colPins[COLS] = {5, 4, 3, 2};
byte rowPins[ROWS] = {9, 8, 7, 6};

Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );

char stringAngka[17];
int indexKeypad = 0;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
Serial.println("Pengukuran Suhu dan Kelembaban");
lcd.init();
lcd.begin(16, 2);
lcd.backlight();
lcd.setCursor(4,0);
lcd.print("Tutorial");
lcd.setCursor(0,1);
lcd.print("Keypad 4x4 & LCD");
delay(2000);
lcd.clear();
dht.begin();
}

void loop() {
  // put your main code here, to run repeatedly:

float temp = dht.readTemperature(true);
float hum = dht.readHumidity();
delay(2000);

//Menampilkan di LCD
lcd.setCursor(0,0);
lcd.println("Suhu :");
lcd.print(temp,1);
lcd.println("F");
lcd.setCursor(0,1);
lcd.println("Kelembaban :");
lcd.print(hum,0);
lcd.println("%");

char key = keypad.getKey();
if (key) {
  Serial.println(key);
  switch (key)
  {
    case '0':
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9':
    case 'A':
    case 'B':
    case 'C':
    case 'D':
    case '#':
    if (!indexKeypad)
    {
      lcd.clear();
    }
    stringAngka[indexKeypad++] = key;
    lcd.setCursor(15,1);
    lcd.println(key);
    break;
    case '*':
    lcd.clear();
    indexKeypad = 0;
    break;
  }
}

//Menampilkan serial di monitor
Serial.println("Suhu :");
Serial.print(temp,1);
Serial.println("F");
Serial.println("Kelembaban :");
Serial.print(hum,0);
Serial.println("%");
}