#include <LiquidCrystal.h>
#include "DHT.h"

int led1 = 12; 
int led2 = 14; 
int led3 = 27; 
int led4 = 26; 
//Variables
LiquidCrystal lcd(23,22,21,19,18,5); 
float tp, hm; 

//Constantes
#define DHTPIN 13
#define DHTTYPE DHT22
DHT dht(DHTPIN, DHTTYPE); 

String readTemperatura(){
  float t = dht.readTemperature(); 
  if(isnan(t)){
    Serial.println("Falla sensor DHTxx"); 
    return String(tp);
  } 
  else {
    tp = t; 
    Serial.println("Temperatura: " + String(tp)); 
    lcd.setCursor(0,0); 
    lcd.print("Temp: "); 
    lcd.print(tp); 
    lcd.print(" C"); 
    return String(tp); 
  }
}

String readDHTHumedad(){
  float h = dht.readHumidity(); 
  if(isnan(h)){
    Serial.println("Falla sensor DHTxx"); 
    return String(hm); 
  }

  else {
    hm = h; 
    Serial.println("Humedad: " +String(hm)); 
    lcd.setCursor(0,1); 
    lcd.print("Hum:"); 
    lcd.print(hm); 
    lcd.print(" %");
    return String(hm); 
  }
}


void setup() {
  lcd.begin(16,2); 
  Serial.begin(115200); 
  dht.begin(); 
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
  pinMode(led4, OUTPUT);
}

void prenderLeds() {
  // De derecha a izquierda
  digitalWrite(led1, HIGH);
  delay(100);
  digitalWrite(led1, LOW);

  digitalWrite(led2, HIGH);
  delay(500);
  digitalWrite(led2, LOW);

  digitalWrite(led3, HIGH);
  delay(500);
  digitalWrite(led3, LOW);

  digitalWrite(led4, HIGH);
  delay(500);
  digitalWrite(led4, LOW);

  // De izquierda a derecha
  digitalWrite(led3, HIGH);
  delay(500);
  digitalWrite(led3, LOW);

  digitalWrite(led2, HIGH);
  delay(500);
  digitalWrite(led2, LOW);

  digitalWrite(led1, HIGH);
  delay(500);
  digitalWrite(led1, LOW);
}

void loop() {
  readTemperatura(); 
  readDHTHumedad(); 
  prenderLeds(); 
}