#include "DHT.h"
#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
DHT dht(DHTPIN, DHTTYPE);

#include<LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd ( 0x27, 20, 4 ); 

LiquidCrystal_I2C lcd2( 0x30, 20, 4 );

LiquidCrystal_I2C lcd3( 0x33, 20, 4 );

#include <EEPROM.h>
int dato;
int a =0;
int r;

const int trigger = 3;
const int echo = 4;

void setup() {
  //Ultrasonido
  pinMode(trigger,OUTPUT);
  digitalWrite(trigger,LOW); 
  pinMode(echo,INPUT);
  Serial.begin(115200);
  dht.begin();
  //********************************
  pinMode(9,INPUT); 
  lcd.init();
  lcd2.init();
  lcd.backlight();
  lcd2.backlight();
  lcd3.init();
  lcd3.backlight();

}

void loop() {
  r = digitalRead(9);
  delay(50);
  long tr;
  long d;
  digitalWrite(trigger,HIGH);
  delayMicroseconds(10); 
  digitalWrite(trigger,LOW);
  tr=pulseIn(echo,HIGH);
  d= tr/59;
  delay(2000);
  float h = dht.readHumidity();
  float t = dht.readTemperature(); 
  float f = dht.readTemperature(true);
  //******************************************************************************
  lcd.setCursor(0,0);
  lcd.print("Humedad:");
  lcd.setCursor(10,0);
  lcd.print(h);
  lcd.setCursor(16,0);
  lcd.print("%");
  //******************************************************************************
  lcd.setCursor(0,1);
  lcd.print("Temperatura:");
  lcd.setCursor(13,1);
  lcd.print(t);
  lcd.print("°C");
//******************************************************************************
  lcd2.setCursor(0,0);
  lcd2.print("Distancia: ");
  lcd2.setCursor(12,0);
  lcd2.print(d);
  lcd2.print("cm.");
//******************************************************************************     
   //Leer el contenido de memoria eeprom
   if (r==1)
   {
     for(int i=0;i<=50;i++)
     {
       dato=EEPROM.read(i);
       lcd3.setCursor(0,0);
       lcd3.print("direccion =");
       lcd3.setCursor(12,0);
       lcd3.print(i);
       lcd3.setCursor(0,1);
       lcd3.print(" dato =");
       lcd3.println(dato);
       delay(2000);
     }
   } 
}