// LCD pins details: https://docs.wokwi.com/parts/wokwi-lcd1602

// Include the library used to manage the LCD
#include <LiquidCrystal.h>
 /*
https://www.arduino.cc/reference/en/libraries/liquidcrystal/
The LiquidCrystal.h Library will use the ESP32 pins as follow to send information to the LCD:
  - Pin 13 (RS) to indicate if a Command (LOW) or Data (HIGH) will be received by the LCD.
  - Pin 12 (EN) to Enable (activate / HIGH) the LCD to receive Command or Data from the ESP32.
  - Pin 25, 26, 27 & 14 to sent the Command or Data to LCD.
*/
// Create An LCD Object. Signals: [ RS, EN, D4, D5, D6, D7 ]
LiquidCrystal My_LCD(13, 12, 25, 26, 27, 14);
 
/*
https://maxpromer.github.io/LCD-Character-Creator/
Define the variable with the symbol of a SPEAKER to be displayed on the LCD using LiquidCrystal.h library
*/

byte SpeakerChar[] = {
  B00001, // ☐☐☐☐◼︎
  B00011, // ☐☐☐◼︎◼︎
  B00111, // ☐☐◼︎◼︎◼︎
  B11111, // ◼︎◼︎◼︎◼︎◼︎
  B11111, // ◼︎◼︎◼︎◼︎◼︎
  B00111, // ☐☐◼︎◼︎◼︎
  B00011, // ☐☐☐◼︎◼︎
  B00001  // ☐☐☐☐◼︎
};

// Define the variable with the symbol of two ARROWS to be displayed on the LCD using LiquidCrystal.h library
byte flechas[] = {
  B00100, // ☐☐◼︎☐☐
  B01110, // ☐◼︎◼︎◼︎☐
  B11111, // ◼︎◼︎◼︎◼︎◼︎
  B00000, // ☐☐☐☐☐
  B00000, // ☐☐☐☐☐
  B11111, // ◼︎◼︎◼︎◼︎◼︎
  B01110, // ☐◼︎◼︎◼︎☐
  B00100  // ☐☐◼︎☐☐
};
 
void setup()
{
  // Initialize the LCD with 16 columns and 2 lines
  My_LCD.begin(16, 2);
  
  // Assign the custom character number zero to SPEAKER and number one to ARROWS
  My_LCD.createChar(0, SpeakerChar);
  My_LCD.createChar(1, flechas);
 
}
 
void loop()
{
  // Clear the LCD of any previous message
  My_LCD.clear();
  
  // Display the first message in home position (0, 0): column zero and line zero
  My_LCD.print("Hello");
  
  // Display the custom SPEAKER symbol just after the "Hello" message
  My_LCD.write(byte(0));
  
  // Set the cursor position to column zero of line one of the LCD
  My_LCD.setCursor(0, 1);
  
  // Display the custom ARROWS symbol in column zero of line one of the LCD
  My_LCD.write(byte(1));
  
  // Display the Kitty message just after the ARROWS symbol
  My_LCD.print("Kitty");
  
  // One second delay before displaying the message again
  delay(1000);
}