/*
  LiquidCrystal Library - Hello World

 Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
 library works with all LCD displays that are compatible with the
 Hitachi HD44780 driver. There are many of them out there, and you
 can usually tell them by the 16-pin interface.

 This sketch display Icons suitable for Weather Stations, House, Thermometer, Hygrow Meter (Humidity) 
 on (Row0, Col0), --- (Row1,Col1)
 
The memory on the LCD Display is very small and not to many 
custom characters (I think it is 2) can be displayed simultaneously

 
 More info on custom icons at:
 https://www.engineersgarage.com/arduino/making-custom-characters-on-lcd-using-arduino/

  The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * LCD R/W pin to ground
 * LCD VSS pin to ground
 * LCD VCC pin to 5V
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)



 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */

// include the library code:
#include <Wire.h>
#include <LiquidCrystal_I2C.h>

//defining House Icon
byte housechar1[8]={B00000, B00001, B00011, B00011, //Row 0, Col 0
                  B00111, B01111, B01111, B11111,};
byte housechar2[8]={B11111, B11111, B11100, B11100, //Row 1, Col 0
                  B11100, B11100, B11100, B11100,};
byte housechar3[8]={B00000, B10010, B11010, B11010, //ROW 0, Col 1
                  B11110, B11110, B11110, B11111,};
byte housechar4[8]={B11111, B11111, B11111, B10001, //Row 1, Col 1
                    B10001, B10001, B11111, B11111,};
//Definining Termometer Icon
byte tempchar1[8]={B00000, B00001, B00010, B00100, //Row 0, Col 2
                  B00100, B00100, B00100, B00111,};
byte tempchar2[8]={B00111, B00111, B00111, B01111, //Row 1, Col 2
                  B11111, B11111, B01111, B00011,};
byte tempchar3[8]={B00000, B10000, B01011, B00100, //ROW 0, Col 3
                  B00111, B00100, B00111, B11100,};
byte tempchar4[8]={B11111, B11100, B11100, B11110, //Row 1, Col 3
                  B11111, B11111, B11110, B11000,};

//Defining Humidity Icon
byte humchar1[8]={B00000, B00001, B00011, B00011, 
                  B00111, B01111, B01111, B11111,};
byte humchar2[8]={B11111, B11111, B11111, B01111, 
                  B00111, B00000, B00000, B00000,};
byte humchar3[8]={B00000, B10000, B11000, B11000, 
                  B11100, B11110, B11110, B11111,};
byte humchar4[8]={B11111, B11111, B11111, B11110,
                  B11100, B00000, B00000, B00000,};

// initialize the LCD library with the numbers of the interface pins
LiquidCrystal_I2C lcd(0x27,20,4);

//It seems like the LCD does not have enought 
//memory to create all characters at ones

void setup() {
  // set up the LCD's number of columns and rows:
  Serial.begin(9600);
  lcd.backlight();
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("Weather Icons");
  lcd.setCursor(0,1);
  lcd.print("..In Development");
  delay(5000);
  lcd.clear();
}

void loop() {
  lcd.clear();
  delay(1000);
  lcd.createChar(1,housechar1);
  lcd.createChar(2,housechar2);
  lcd.createChar(3,housechar3);
  lcd.createChar(4,housechar4);
  lcd.setCursor(0,0);
  lcd.write(1);
  lcd.setCursor(0,1);
  lcd.write(2);
  lcd.setCursor(1,0);
  lcd.write(3);
  lcd.setCursor(1,1);
  lcd.write(4);
  lcd.setCursor(3,0);
  lcd.print("My House");
  delay(5000);
  
  lcd.clear();
  delay(1000);
  lcd.createChar(1,tempchar1);
  lcd.createChar(2,tempchar2);
  lcd.createChar(3,tempchar3);
  lcd.createChar(4,tempchar4);
  lcd.setCursor(0,0);
  lcd.write(1);
  lcd.setCursor(0,1);
  lcd.write(2);
  lcd.setCursor(1,0);
  lcd.write(3);
  lcd.setCursor(1,1);
  lcd.write(4);
  lcd.setCursor(3,0);
  lcd.print("Thermometer");
  delay(5000);
  
  lcd.clear();
  delay(1000);
  lcd.createChar(1,humchar1);
  lcd.createChar(2,humchar2);
  lcd.createChar(3,humchar3);
  lcd.createChar(4,humchar4);
  lcd.setCursor(0,0);
  lcd.write(1);
  lcd.setCursor(0,1);
  lcd.write(2);
  lcd.setCursor(1,0);
  lcd.write(3);
  lcd.setCursor(1,1);
  lcd.write(4);
  lcd.setCursor(3,0);
  lcd.print("Humidity");
  delay(5000);
}