#include <LiquidCrystal_I2C.h>
#include <dht.h>

#define dataPin 5
#define Red 2
#define Green 3
#define Blue 4
#define led_var 13
#define led_tmp 12
#define led_umd 11 

unsigned long millisAnteriorRGB = 0;
unsigned long millisAnteriorLCD = 0;

float somaTmp = 0;
float somaUmd = 0; 
float somaAng = 0;
float mediaTmp = 0;
float mediaUmd = 0;
float mediaAng = 0;

int contador = 0;
int telaAtual = 0;
LiquidCrystal_I2C lcd(0x27, 16, 2);
dht DHT;
void setup() {
  pinMode(Red, OUTPUT);
  pinMode(Green, OUTPUT);
  pinMode(Blue, OUTPUT);
  pinMode(led_var, OUTPUT);
  pinMode(led_tmp, OUTPUT);
  pinMode(led_umd, OUTPUT);
  lcd.init();
  lcd.setBacklight(HIGH);
}
void loop() {
  unsigned long millisAtual = millis();
  int RedLeitura = digitalRead(Red);
  int GreenLeitura = digitalRead(Green);
  int BlueLeitura = digitalRead(Blue);
  int pot = analogRead(A3);
  int angPot = map(pot, 0, 1023, 0, 270);
  int readData = DHT.read22(dataPin);
  float t = DHT.temperature;
  float h = DHT.humidity;
  somaTmp += t;
  somaUmd += h;
  somaAng += angPot;
  contador++;
  if (contador >= 100) {
    mediaTmp = somaTmp / 100.0;
    mediaUmd = somaUmd / 100.0;
    mediaAng = somaAng / 100.0;
    somaTmp = 0;
    somaUmd = 0;
    somaAng = 0;
    contador = 0;
  }
  float t_led = map(mediaTmp, 10, 20, 0, 255);
  
  if (mediaAng >= 90) {
  if ((millisAtual - millisAnteriorRGB) > 1000) {
      millisAnteriorRGB = millisAtual;
  if (RedLeitura == LOW && GreenLeitura == LOW && BlueLeitura == LOW) {
        digitalWrite(Red, HIGH);
      }
  if (RedLeitura == HIGH) {
        digitalWrite(Red, LOW);
        digitalWrite(Green, HIGH);
      } 
  if (GreenLeitura == HIGH) {
        digitalWrite(Green, LOW);
        digitalWrite(Blue, HIGH);
      } 
  if (BlueLeitura == HIGH) {
        digitalWrite(Blue, LOW);
      }
    }
  } 
  else {
    digitalWrite(Red, LOW);
    digitalWrite(Green, LOW);
    digitalWrite(Blue, LOW);
  }
  if (mediaTmp >= 10 && mediaTmp <= 20) {
    analogWrite(led_var, t_led);
  }
  if (mediaTmp > 20) {
    digitalWrite(led_var, HIGH);
  }
  if (mediaTmp < 10) { 
    digitalWrite(led_var, LOW);
  }
  if (mediaTmp >= 40) {
    digitalWrite(led_tmp, HIGH);
  }
  else {
    digitalWrite(led_tmp, LOW);
  }
  if (mediaUmd >= 75) { 
    digitalWrite(led_umd, HIGH);
  }
  else { 
    digitalWrite(led_umd, LOW);
  }
  if ((millisAtual - millisAnteriorLCD) > 1000) {
    millisAnteriorLCD = millisAtual;
    if (telaAtual == 0) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Tmp. = ");
      lcd.print(mediaTmp);
      lcd.print(" ");
      lcd.print((char)223);
      lcd.print("C");
      lcd.setCursor(0, 1);
      lcd.print("Umd. = "); 
      lcd.print(mediaUmd);
      lcd.print((char)37);
      telaAtual = 1;
    } 
    else if (telaAtual == 1) {
      lcd.clear();
      lcd.setCursor(0, 0);
      lcd.print("Ang. = ");
      lcd.print(mediaAng);
      lcd.print((char)223);
      telaAtual = 0;
    }
  }
}