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

LiquidCrystal_I2C lcd_verde(0x27, 16, 2);
DHT dht_blanco(3, DHT22);

void setup() {
  // put your setup code here, to run once:
  pinMode(2, INPUT_PULLUP);
  lcd_verde.init();
  lcd_verde.backlight();
  dht_blanco.begin();
  pantallazo();
}

void pantallazo(){
  lcd_verde.setCursor(0,0);
  lcd_verde.print(" Hola mundo UNI");
  lcd_verde.setCursor(0,1);
  lcd_verde.print("Maestria IA 2026");
  delay(3000);
  lcd_verde.clear();
  lcd_verde.setCursor(0,0);
  lcd_verde.print("Sist. Embebidos");
  lcd_verde.setCursor(0,1);
  lcd_verde.print("Display LCD 2x16");
  delay(3000);
  lcd_verde.clear();    
}

const float BETA = 3950; // should match the Beta Coefficient of the thermistor

void loop() {
  // put your main code here, to run repeatedly:
  if(digitalRead(2) == LOW){
    lcd_verde.setCursor(11,0);
    lcd_verde.print("B:ON ");
  }
  else{
    lcd_verde.setCursor(11,0);
    lcd_verde.print("B:OFF");
  }
  int analogValue = analogRead(A0);
  //siguiente va el escalamiento de la medida
  float celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  lcd_verde.setCursor(0,0);
  lcd_verde.print("S1:");
  lcd_verde.print(celsius);
  lcd_verde.write(0xDF);
  lcd_verde.print("C ");
  float h = dht_blanco.readHumidity();
  float t = dht_blanco.readTemperature();  
  lcd_verde.setCursor(0,1);  
  lcd_verde.print("S2:");
  lcd_verde.print(t);
  lcd_verde.write(0xDF);
  lcd_verde.print("C ");   
  lcd_verde.print(h);   
}