/*
  Filename: textSpecificLocation
  Author: George Howard
  Date: 26/03/2024
  Description: This is a simple program to test writing to and LCD screen on the Arduino.
 */

#include <Arduino.h>
#include <LiquidCrystal.h>
#include <util/delay.h>

LiquidCrystal lcd(8, 9, 4, 5, 6, 7);

int main (void) {
  WriteLCDText (0, 0, "Hello");
  _delay_ms(2500);
  WriteLCDText (11, 0, "George Howard");
  _delay_ms(2500);
  WriteLCDText (18, 1, "Testing");
  _delay_ms(2500);
  WriteLCDText (0, 0, "Using all characters on display!");
}

void WriteLCDText(int col, int row, char *text) {

  lcd.begin(16, 2);

  // Check if col and row are within range
  if (row < 0 || row > 1 || col < 0 || col > 15) {
        lcd.setCursor(0, 0);
        lcd.print("Out of range!");
        return;
  }

  // Set the cursor to col and row
  lcd.setCursor(col, row);
  
  // Calculating 
  int remainingSpace = 16 - col;
  int textLength = strlen(text);
  
  // Reducing length of text if necessary
  if (textLength > remainingSpace) {
    textLength = remainingSpace;
  }

  // Displaying text
  for (int i = 0; i < textLength; i++) {
      lcd.print(text[i]);
  }

  if (strlen(text) > textLength) { 
    row += 1;
    lcd.setCursor(0, row);
    for (int i = textLength; i < strlen(text); i++) {
      lcd.print(text[i]);
    }
  }
}