"Prime Counter" rev_13

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    - Project: "Prime Counter"
    - Source Code compiled for: Arduino Uno
    - Source Code created on: 2023-12-13 11:00:10

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* if push button is pressed a number of times that */
    /* is a prime number, so display on LCD the prime */
    /* number. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <EasyButton.h>
#include <math.h>

/****** FUNCTION PROTOTYPES *****/
void setup();
void loop();

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t button_PushButton_PIN_D2 = 2;

/***** DEFINITION OF I2C PINS *****/
const uint8_t Lcd_LCD1602I2C_I2C_PIN_SDA_A4 = A4;
const uint8_t Lcd_LCD1602I2C_I2C_PIN_SCL_A5 = A5;
const uint8_t Lcd_LCD1602I2C_I2C_SLAVE_ADDRESS = 0x27; // Replace with the correct slave address

/****** DEFINITION OF LIBRARY CLASS INSTANCES *****/
LiquidCrystal_I2C lcd(Lcd_LCD1602I2C_I2C_SLAVE_ADDRESS, 20, 4); // Replace with the correct parameters
EasyButton button1(button_PushButton_PIN_D2);

bool isPrimeNumber(int num)
{
  if (num <= 1)
  {
    return false;
  }

  for (int i = 2; i <= sqrt(num); i++)
  {
    if (num % i == 0)
    {
      return false;
    }
  }

  return true;
}

void setup()
{
  // Initialize the LCD with 20 columns and 4 rows
  lcd.begin(20, 4);
  // Set the backlight off
  lcd.setBacklight(LOW);
  // Clear the LCD screen
  lcd.clear();

  // Initialize the button
  button1.begin();
}

void loop()
{
  // Read the button state
  button1.read();

  static int pressCount = 0;

  if (button1.wasPressed())
  {
    pressCount++;

    // Check if the press count is a prime number
    if (isPrimeNumber(pressCount))
    {
      // Turn on the backlight and display the prime number
      lcd.setBacklight(HIGH);
      lcd.setCursor(0, 0);
      lcd.print("Prime Number: ");
      lcd.print(pressCount);
    }
    else
    {
      // Turn off the backlight and clear the LCD screen
      lcd.setBacklight(LOW);
      lcd.clear();
    }
  }
}