#include <EEPROM.h>


int led1 = 13;  
int button1 = 2; 
int state1 = LOW; 
int val1 = 0; 
unsigned long led1OnTime = 0; 
float led1DurationOn = 0;

int led2 = 12;  
int button2 = 3;
int state2 = LOW; 
int val2 = 0; 
unsigned long led2OnTime = 0; 
float led2DurationOn = 0; 


float totalLedOnTime = 0;

void setup() 
{
  // Initialize pins for LED 1 and Button 1
  pinMode(led1, OUTPUT);
  pinMode(button1, INPUT_PULLUP); // Use internal pull-up resistor
  
  // Initialize pins for LED 2 and Button 2
  pinMode(led2, OUTPUT);
  pinMode(button2, INPUT_PULLUP); // Use internal pull-up resistor

  // Initialize serial communication
  Serial.begin(9600);
  Serial.println("System Ready. Waiting for button press...");
}

void loop() 
{
  // Handle Button 1 and LED 1
  val1 = digitalRead(button1); // Read button 1
  if (val1 == LOW) { // Button 1 pressed (LOW due to pull-up)
    digitalWrite(led1, HIGH); // Turn on LED 1
    delay(100);

    if (state1 == LOW) { // Detect new press event
      led1OnTime = millis(); // Record current time for LED 1
      Serial.println("LED 1 ON!");
      state1 = HIGH; // Update state for Button 1
    }
  } else { // Button 1 not pressed
    digitalWrite(led1, LOW); // Turn off LED 1
    delay(200);

    if (state1 == HIGH) { // Handle button release
      unsigned long currentTime = millis(); // Record current time
      Serial.println("Button 1 released!");
      led1DurationOn = (currentTime - led1OnTime) / 1000.0; // Calculate ON duration
      Serial.print("LED 1 was ON for: ");
      Serial.print(led1DurationOn, 2);
      Serial.println(" seconds.");

      // Update total ON time
      totalLedOnTime += led1DurationOn;
      
      // Display total ON time after LED 1 turns off
      Serial.print("Total LED ON time: ");
      Serial.print(totalLedOnTime, 2);
      Serial.println(" seconds.");
      
      state1 = LOW; // Reset state
    }
  }

  // Handle Button 2 and LED 2
  val2 = digitalRead(button2); // Read button 2
  if (val2 == LOW) { // Button 2 pressed (LOW due to pull-up)
    digitalWrite(led2, HIGH); // Turn on LED 2
    delay(100);

    if (state2 == LOW) { // Detect new press event
      led2OnTime = millis(); // Record current time for LED 2
      Serial.println("LED 2 ON!");
      state2 = HIGH; // Update state for Button 2
    }
  } else { // Button 2 not pressed
    digitalWrite(led2, LOW); // Turn off LED 2
    delay(200);

    if (state2 == HIGH) { // Handle button release
      unsigned long currentTime = millis(); // Record current time
      Serial.println("Button 2 released!");
      led2DurationOn = (currentTime - led2OnTime) / 1000.0; // Calculate ON duration
      Serial.print("LED 2 was ON for: ");
      Serial.print(led2DurationOn, 2);
      Serial.println(" seconds.");

     
      totalLedOnTime += led2DurationOn;
      
    
      Serial.print("Total LED ON time: ");
      Serial.print(totalLedOnTime, 2);
      Serial.println(" seconds.");
      
      state2 = LOW; 
    }
  }
}