#include <LiquidCrystal.h>
#include <Wire.h>

  LiquidCrystal lcd(12, NULL, 11, 9, 8, 7, 6);

const int tmp102Address = 0x48;
float temperatura;
float temperatura2;

byte grad[8] = {
  B01100,
  B10010,
  B10010,
  B01100,
  B00000,
  B00000,
  B00000
};
void setup() {
  lcd.begin(16, 2);
  lcd.noCursor();
  Wire.begin();
  Serial.begin(9600);
  lcd.createChar(0, grad);
}

void loop() {
  temperatura = getTemperature();
  lcd.setCursor(0, 0);
  if (temperatura >= 0) lcd.print(" ");
  else {
    lcd.print("-");
    temperatura = -temperatura;
  }
  if (temperatura < 10) lcd.print(" ");
  lcd.print(temperatura);
  Serial.println(temperatura);
  lcd.write(byte(0));
  lcd.print("C");
  lcd.setCursor(0,1);
  temperatura2 = getTemperature2();
  lcd.print(temperatura2);
  lcd.write(byte(0));
  lcd.print("C");
  delay(5000);
}

float getTemperature() {
  byte MSB = 0x00;
  byte LSB = 0x00;
  int TempCitita = 0;
  float TempCelsius = 0.0;
  Wire.beginTransmission(tmp102Address);
  Wire.write(0x00);
  Wire.endTransmission();
  Wire.requestFrom(tmp102Address, 2);
  Wire.endTransmission();
  MSB = Wire.read();
  LSB = Wire.read();
  //temperatura este pe 12 biti cu ultimii 4 biti 0 astfel trebuie
  //shift-ata la stanga cu 4 pozitii
  TempCitita = ((MSB << 8) | LSB) >> 4;
  TempCelsius = TempCitita * 0.0625;
  return TempCelsius;
}

float getTemperature2() {
   float temp = analogRead(0)*5/1024.0;
  temp = temp - 0.5;
  temp = temp / 0.01;
  // converting that reading to voltage, for 3.3v arduino use 3.3
 //float voltage = reading * 5.0;
 //voltage = voltage / 1024.0;


 //converting from 10 mv per degree wit 500 mV offset
 //to degrees ((voltage - 500mV) times 100)
 //float temperatureC = (voltage - 0.5) * 100 ;

 return temp;
}