/* 

 Rob's first project
 20 Feb 2024
 Brisbane

*/

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,2);  // set the LCD address to 0x27 for a 16 chars and 2 line display
int totalColumns = 16;
int totalRows = 2;

String staticMessage = "Hello World";
String scrollingMessage = "Welcome to Rob's Arduino";

void scrollMessage(int row, String message, int delayTime, int totalColumns) {
  for (int i=0; i < totalColumns; i++) {
    message = " " + message;  
  } 
  message = message + " "; 
  for (int position = 0; position < message.length(); position++) {
    lcd.setCursor(0, row);
    lcd.print(message.substring(position, position + totalColumns));
    delay(delayTime);
    }
}

void setup()
{
  lcd.init();                      // initialize the lcd                                 
  lcd.backlight();
  lcd.setCursor(2,0);
  lcd.print(staticMessage);        // Print a message to the LCD.
  lcd.setCursor(2,1);
  lcd.print("*");
  delay(2000);
  
}

void loop()
{
scrollMessage(1, scrollingMessage, 300, totalColumns);
}