/*
 * Robojax Arduino Step-by-Step Course
 * Part 3: Temperature Sensors
 * Lesson 33: MCP9808 with LCD1602-I2C
 

 * Updated by Ahmad Shamshiri for Robojax (Robojax.com)
 * on March 23, 2019 in Ajax, Ontario, Canada
 
  Please watch the video instruction here: https://youtu.be/ljPrJKAokUA
 This code is available at: http://robojax.com/course1/?vid=lecture33
 
with over 100 lectures free on YouTube. Watch it here: http://robojax.com/L/?id=338
Get the code for the course: http://robojax.com/L/?id=339  
If you found this tutorial helpful, please support me so I can continue creating.
Make a donation using PayPal: http://robojax.com/L/?id=64

 * Code is available at: http://robojax.com/learn/arduino

 * This code is "AS IS" without warranty or liability. Free to be used as long as you keep this note intact.
 * This code has been downloaded from Robojax.com
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>. 
    
	
 */ 

/**************************************************************************/
/*!
This is a demo for the Adafruit MCP9808 breakout.
----> http://www.adafruit.com/products/1782
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
*/
/**************************************************************************/

#include <Wire.h>
#include "Adafruit_MCP9808.h"

// Create the MCP9808 temperature sensor object
Adafruit_MCP9808 tempsensor = Adafruit_MCP9808();

// start of settings for LCD1602-I2C
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// Set the LCD address to 0x3F for a 16 chars and 2 line display
LiquidCrystal_I2C lcd(0x3F, 16, 2);
// end of settings for LCD1602-I2C

void setup() {
	//YouTube Watch it here: http://robojax.com/L/?id=338
 // initialize the LCD, 
  lcd.begin();
  // Turn on the backlight and print a message.
  lcd.backlight();
  lcd.clear();
  lcd.setCursor (0,0); //


  // Make sure the sensor is found, you can also pass in a different i2c
  // address with tempsensor.begin(0x19) for example
  if (!tempsensor.begin()) {
  lcd.print("MCP9808 Error"); 
 
  }
  lcd.print("MCP9808 Test");   
  delay(2000); 
}

void loop() {
	//YouTube Watch it here: http://robojax.com/L/?id=338
  //Serial.println("wake up MCP9808.... "); // wake up MCP9808 - power consumption ~200 mikro Ampere
  //tempsensor.wake();   // wake up, ready to read!

  lcd.clear();// clear previous values from screen
  lcd.setCursor (0,0); //character zero, line 1
  lcd.print("MCP9808 Sensor"); // print text 


  // print distance in degrees C
  lcd.setCursor (0,1); //character 0, line 2
  lcd.print(getTemp('C'));// print Temperature Celsius
  lcd.setCursor (5,1); //character 6, line 2 
  lcd.print((char)223);// print degree 
  lcd.setCursor (6,1); //character 7, line 2 
  lcd.print("C");// print C
  
   // print distance degrees F
  lcd.setCursor (8,1); //character 9, line 2
  lcd.print(getTemp('F'));// print distance in cm
  lcd.setCursor (14,1); //character 15, line 2 
  lcd.print((char)223);// print degree 
  lcd.setCursor (15,1); //character 16, line 2 
  lcd.print("F");// print F 

      
  //Serial.println("Shutdown MCP9808.... ");
  //tempsensor.shutdown(); // shutdown MCP9808 - power consumption ~0.1 micro Ampere
  
  delay(1000);
}



/*
 * Written by Ahmad Shamshiri for Robojax.com
 * January 22, 2019 in Ajax, Ontario, Canada
 * 
 * getTemp(char type)
 * returns temperature in either C, F, or K
 * @param type is a character of upper case 
 * C is used to get Celsius
 * F is used to get Fahrenheit
 * K is used for Kelvin
 */
float getTemp(char type) {
	//YouTube Watch it here: http://robojax.com/L/?id=338
    float c = tempsensor.readTempC();//get main temperature in C
  float f = c * 9.0 / 5.0 + 32;// convert to fahrenheit
  if(type =='F')
  {
    return f;// fahrenheit
  }else if(type =='K')
  {
    return c + 274.15;// return Kelvin
  }else{
   return c; //return Celsius
  }
  
}//getTemp ends