#include <Wire.h> 
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C MyLCD(0x27, 20, 4); // Creates I2C LCD Object With (Address=0x27, Cols=20, Rows=4)

//pines y variables para NTC
#define pinNTC 15
const float BETA = 3950;

//Pines y variables para pot
#define pinPot 4

//librerias y variables del sensor 18b20
#include <OneWire.h>
#include <DallasTemperature.h>
#define oneWireBus  12
OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);

//Pin del led
#define led 33

//Variables
int analogValue;
float celsius;
int potValue;
float temperatureC;

void setup(){
  Serial.begin(115200);
  pinMode(pinNTC,INPUT);
  pinMode(pinPot, INPUT);
  pinMode(led, OUTPUT);
  analogReadResolution(10);
  MyLCD.init();
  MyLCD.backlight();
  sensors.begin();
}

void loop(){
  //Leer el sensor de NTC
  analogValue = analogRead(pinNTC);
  celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  Serial.print("TEMP1: ");
  Serial.println(celsius);

  //Leer potenciometro
  potValue = analogRead(pinPot);
  Serial.print("Pot: ");
  Serial.println(potValue);

  //leer sensor 18b20
  sensors.requestTemperatures(); 
  temperatureC = sensors.getTempCByIndex(0);
  Serial.print("S18B20: ");
  Serial.print(temperatureC);
  Serial.println("ºC");

  presentaLCD();

  //Condiciones
  if(temperatureC >40){
    MyLCD.print("NOVEDADES!!!");
    digitalWrite(led, HIGH);
  }else{
    MyLCD.print("S/N         ");
    if(celsius > 30){
      digitalWrite(led, HIGH);
    }else{
      digitalWrite(led, LOW);
    }
  }
  delay(100);
}


void presentaLCD(){
  //Presentar en LCD
  MyLCD.setCursor(0, 0);
  MyLCD.print("CONTROL DE SENSORES");
  MyLCD.setCursor(0, 1);
  MyLCD.print("TEMP1: ");
  MyLCD.print(celsius);
  MyLCD.print("    ");
  MyLCD.setCursor(0, 2);
  MyLCD.print("POT: ");
  MyLCD.print(potValue);
  MyLCD.print("    ");
  MyLCD.setCursor(0, 3);
  MyLCD.print("TEMP 2: ");
}