// Breno Correia Lociks
// Exercício 6

#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
#include <DHTesp.h>
#define dataPin 12
#define ntc 14
#define R 16
#define G 17
#define B 5

const int OneWireBus = 4;
OneWire oneWire(OneWireBus);
DallasTemperature sensors(&oneWire);

LiquidCrystal_I2C lcd(0x27,16,2);
DHTesp dht;

int telaAtual = 0;
int tempoAnterior = 0;
int leituras = 0;
float soma = 0;

float media = 0;
void setup() {
  Serial.begin(115200);
  sensors.begin();
  lcd.init();
  lcd.setBacklight(HIGH);
  dht.setup(dataPin, DHTesp::DHT22);

  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT); 
  pinMode(ntc, INPUT); 
}

void loop() {
  float t = dht.getTemperature();
  float h = dht.getHumidity();

  sensors.requestTemperatures();
  float temperaturaC = sensors.getTempCByIndex(0);
  float temperaturaF = sensors.getTempFByIndex(0);

  int NTCLeitura = analogRead(ntc);
  float celciusNTC = 1.0 / (log(1.0 / (4095.0 / NTCLeitura - 1.0)) / 3950.0 + 1.0 / 298.15) - 273.15;
  soma += celciusNTC;
  leituras += 1;

  if(leituras == 10) {
    media = soma / leituras;
    soma = 0;
    leituras = 0;
  }

  if(millis() - tempoAnterior > 1000) {
    tempoAnterior = millis();

    Serial.print(temperaturaC);
    Serial.println("ºC");
    Serial.print(temperaturaF);
    Serial.println("ºF");
    Serial.println(" ");
    Serial.print(t);
    Serial.println("ºC");
    Serial.print(h);
    Serial.println("%");
    Serial.println(" ");

    if(telaAtual == 0) {
      telaAtual = 1;
    }
    else if(telaAtual == 1) {
      telaAtual = 2;
    }
    else if(telaAtual == 2) {
      telaAtual = 0;
    }
  }

  if(telaAtual == 0) {
      lcd.setCursor(0,0);
      lcd.print(temperaturaC);
      lcd.print(" C        ");
      lcd.setCursor(0,1);
      lcd.print(temperaturaF);
      lcd.print(" F        ");
  }

  if(telaAtual == 1) {
      lcd.setCursor(0,0);
      lcd.print(t);
      lcd.print(" C         ");
      lcd.setCursor(0,1);
      lcd.print(h);
      lcd.print(" %        ");
  }

  if(telaAtual == 2) {
      lcd.setCursor(0,0);
      lcd.print(media);
      lcd.print(" C        ");
      lcd.setCursor(0,1);
      lcd.print("                  ");
  }

  if(t > 30) {
    digitalWrite(R, HIGH);
    digitalWrite(G, LOW);
    digitalWrite(B, LOW);
  }
  if(t < 30 && t > 20) {
    digitalWrite(R, LOW);
    digitalWrite(G, HIGH);
    digitalWrite(B, LOW);
  }
  if(t < 19) {
    digitalWrite(R, LOW);
    digitalWrite(G, LOW);
    digitalWrite(B, HIGH);
  }
}