// IRFAN RAMADHAN
/*  1V ~ 100 celcius
    analog range 0 to 1023
*/
//LIBRARY
#include <LiquidCrystal.h>

// Define
#define indicator 2

//Setup Kaki LCD
const int rs = 13, en = 12, d4 = 11, d5 = 10, d6 = 9, d7 = 8;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

// Mendefinisikan pin tempat sensor LM35 terhubung
const int sensorPin = A0; // Sensor terhubung ke pin analog A0

//Global variable
  float nilailama = 0; // Buat nilai perbandingan doang

  int sensorValue;      
  float voltage;
  float temperatureC;         

void setup() {

  Serial.begin(9600);
  lcd.begin(16, 2);
  pinMode(indicator, OUTPUT);
  Intro("LM35 Sensor Suhu");

}

void loop() {

  sensorValue = analogRead(sensorPin);    // Pembacaan Nilai Analog Pin A0
  voltage = sensorValue * (5.0 / 1023.0); // Membagi Nilai Analog dengan 1023
  temperatureC = voltage * 100.0;         // Membagi Float voltage dengan 100

  //cekSerial();
  PrintLCD();
  ledIndicator(250);

}

void cekSerial(){

    Serial.println(sensorValue);
    Serial.println(temperatureC);
    nilailama = temperatureC;
    delay(10);

}

void PrintLCD(){

  if(nilailama != temperatureC){
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("TEMPERATUR C");
    lcd.setCursor(0, 1);
    lcd.print(temperatureC);
    nilailama = temperatureC;
    delay(250);
  }

}

void Intro(char* y){

  lcd.setCursor(0, 0);
  lcd.print("IRFAN R");
  lcd.setCursor(0, 1);
  lcd.print(y);
  delay(500);
  lcd.clear();

}

void ledIndicator(uint16_t waktu){

  digitalWrite(indicator, 1);
  delay(waktu);
  digitalWrite(indicator, 0);
  delay(waktu);

}