/*
 * \brief Show temperature in degrees Celsius and Fahrenheit every second
 *
 * \author Quentin Comte-Gaz <quentin@comte-gaz.com>
 * \date 8 July 2016
 * \license MIT License (contact me if too restrictive)
 * \copyright Copyright (c) 2016 Quentin Comte-Gaz
 * \version 1.0
 * 
 * Modified by Ahmad Shamshiri on July 12, 2018 at 22:40 for Robojax.com
 * in Ajax, Ontario, Canada
 * Watch video instructions for this code: https://youtu.be/hVo_msVMlaI
For this sketch, you need to connect:
VCC to 3.3V or 5V and GND to GND of the Arduino
SDA to A4 and SCL to A5

 */

#include <LM75A.h>

// Create I2C LM75A instance
LM75A lm75a_sensor(false,  //A0 LM75A pin state
                   false,  //A1 LM75A pin state
                   false); //A2 LM75A pin state
// Equivalent to "LM75A lm75a_sensor;"


// start of settings for LCD1602 with I2C
#include <Wire.h> 
#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x27 for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x27, 16, 2);
// end of settings for LCD1602 with I2C

void setup(void)
{
  Serial.begin(9600);
  Serial.println("Robojax LM75A Test");
  // initialize the LCD
  lcd.begin();  
  lcd.backlight();
  lcd.print("Robojax LM75A");
  lcd.setCursor(0,1);
  lcd.print("Demo"); 
  delay(2000); 
}

void loop()
{
   lcd.clear();// clear previous values from screen
  // Robojax.com LM75A Test
  float temperature_in_degrees = lm75a_sensor.getTemperatureInDegrees();

  if (temperature_in_degrees == INVALID_LM75A_TEMPERATURE) {
    Serial.println("Error while getting temperature");
  } else {
    Serial.print("Temp: ");
    Serial.print(temperature_in_degrees);
    Serial.print(" C (");
    float tmpF = LM75A::degreesToFahrenheit(temperature_in_degrees);
    Serial.print(tmpF);
    Serial.println(" F)");
  lcdDisplay(
             // to print Celsius:
             0, // character 0 
             0, // line 0
             "Celsius: ", 

             // to print Celsius
             11, // character 10
             0, // line 0
             temperature_in_degrees 
             );  

  lcdDisplay(
             // to print Fahrenheit:
             0, // character 0 
             1, // line 1
             "Fahrenheit: ", 

             // to print Fahrenheit
             11, // character 9
             1, // line 0
             tmpF   
             );                 
  }

  delay(1000);
}


/*
 * lcdDisplay(int tc, int tr, String title, int vc, int vr, float value)
 * displays value and title on LCD1602
 * How to use:
 * If you want to display: "Voltage: 13.56mV" starting from the first character
 * on the second row.
 * use:
 * lcdDisplay(0, 1, "Voltage: ", 13.56)
 *   
 * tc  is the character number  (0)
 * tr is the row number in the LCD (1)
 * title is the text ("Voltage:")
 * vc is the character number for the value
 * vr is the row number for the value
 * value is the value (13.56)
 */
void lcdDisplay(int tc, int tr, String title, int vc, int vr, float value)
{
   // Robojax.com LCD1602 for LM75A Demo
   lcd.setCursor (tc,tr); //
   lcd.print(title);
   
   lcd.setCursor (vc,vr); //
   lcd.print(value);
 
}