/*
	Aluno: Joao Domingues de Souza; Matricula: ex-182233; Turma: 15; Projeto Prático 02 Estação Coletora de Informações Climáticas 

*/

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


const int temperatura = A0;
const int fotoresistor = A1;
const int trigger_espaco = 2;   
const int echo_espaco = 3;

LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() 
{
  lcd.init();
  lcd.backlight();
  pinMode(trigger_espaco, OUTPUT);
  pinMode(echo_espaco, INPUT);
}

void loop() 
{
  displayStaticInfo();
  float tempC = readTemperature();
  float tempF = tempC * 9.0 / 5.0 + 32;
  int luminosity = readLuminosity();
  float distanceCm = readDistance();
  float distancePol = distanceCm * 0.393701;
  displayTemperature(tempC, tempF);
  displayLuminosity(luminosity);
  displayDistance(distanceCm, distancePol);
}

int readLuminosity() 
{
  int sensorValue = analogRead(fotoresistor);
  return map(sensorValue, 0, 1023, 0, 100);
}

float readTemperature() 
{
  int sensorValue = analogRead(temperatura);
  float voltage = sensorValue * 5.0 / 1023.0;
  float temperatureC = (voltage - 0.5) * 100.0;
  return temperatureC;
}

float readDistance() 
{
  digitalWrite(trigger_espaco, LOW);
  delayMicroseconds(2);
  digitalWrite(trigger_espaco, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigger_espaco, LOW);
  long duration = pulseIn(echo_espaco, HIGH);
  float distanceCm = duration * 0.034 / 2;
  return distanceCm;
}

void displayTemperature(float tempC, float tempF) 
{
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Temp: ");
  lcd.print(tempC);
  lcd.print("C");

  lcd.setCursor(0, 1);
  lcd.print("Temp: ");
  lcd.print(tempF, 1);
  lcd.print(" F");
  delay(1000);
}

void displayDistance(float distanceCm, float distancePol) 
{
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Dist: ");
  lcd.print(distanceCm);
  lcd.print(" cm");
  lcd.setCursor(0, 1);
  lcd.print("Dist: ");
  lcd.print(distancePol);
  lcd.print(" in");
  delay(1000);
}

void displayLuminosity(int luminosity) 
{
  int rawValue = analogRead(fotoresistor);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("LDR: ");
  lcd.print(rawValue);
  lcd.setCursor(0, 1);
  lcd.print("Luminos: ");
  lcd.print(luminosity);
  lcd.print(" %");
  delay(1000);
}

void displayStaticInfo() 
{
  lcd.clear();
  lcd.setCursor(0,0);
  lcd.print("Fac.  Tecnologia");
  lcd.setCursor(0,1);
  lcd.print("Unicamp  Limeira");
  delay(3000);
  lcd.clear(); 
  lcd.setCursor(0,0);
  lcd.print("Bancos de Dados ");
  lcd.setCursor(0,1);
  lcd.print("Aplicados a IoT ");
  delay(3000);
  lcd.clear(); 
  lcd.setCursor(0,0);
  lcd.print("   Projeto 02    ");
  lcd.setCursor(0,1);
  lcd.print("----------------");
  delay(3000);
  lcd.setCursor(0,0);
  lcd.print("Componentes");
  lcd.setCursor(0,1);
  lcd.print("Joao Domingues");
  delay(3000);
  lcd.clear();   
}