Button LED rev_02

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    - Project: Button LED
    - Source Code compiled for: Arduino Uno
    - Source Code created on: 2023-12-29 08:25:55

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* if pushbutton P1 is switched ON then Output led */
    /* will turn ON and remain ON, this output led status */
    /* will be saved to EEPROM. And if pushbutton p2 is */
    /* switched ON then output led will turn OFF and */
    /* remain OFF. This will also save to EEPROM. */
/****** END SYSTEM REQUIREMENTS *****/

/****** DEFINITION OF LIBRARIES *****/
#include <Arduino.h>
#include <EasyButton.h>
#include <EEPROM.h>

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

/***** DEFINITION OF DIGITAL INPUT PINS *****/
const uint8_t P1_PushButton_PIN_D2 = 2;
const uint8_t P2_PushButton_PIN_D3 = 3;

/***** DEFINITION OF DIGITAL OUTPUT PINS *****/
const uint8_t led_LED_PIN_D4 = 4;

/****** DEFINITION OF LIBRARIES CLASS INSTANCES*****/
EasyButton button1(P1_PushButton_PIN_D2);
EasyButton button2(P2_PushButton_PIN_D3);

bool ledState = false; // Variable to store the state of the LED

void setup(void)
{
  // put your setup code here, to run once:

  pinMode(P1_PushButton_PIN_D2, INPUT_PULLUP);
  pinMode(P2_PushButton_PIN_D3, INPUT_PULLUP);

  pinMode(led_LED_PIN_D4, OUTPUT);

  // Read the LED state from EEPROM
  ledState = EEPROM.read(0);

  // Set the initial state of the LED
  digitalWrite(led_LED_PIN_D4, ledState);

  // Set callback functions for button1 and button2
  button1.onPressed([]() {
    ledState = true;
    digitalWrite(led_LED_PIN_D4, ledState);
    EEPROM.write(0, ledState);
  });

  button2.onPressed([]() {
    ledState = false;
    digitalWrite(led_LED_PIN_D4, ledState);
    EEPROM.write(0, ledState);
  });

  // Begin button interrupts
  button1.begin();
  button2.begin();
}

void loop(void)
{
  // put your main code here, to run repeatedly:

  // Update button states
  button1.read();
  button2.read();
}