/* * Lab 1 - Task 1: LED Control with Delay()
 * Objective: Turn on LED for 2 seconds when button is pressed.
 */

const int buttonPin = 4;     // Push button connected to GPIO 4
const int ledPin = 2;        // Built-in LED / External LED on GPIO 2

int buttonState = 0;         // Variable for reading the pushbutton status

void setup() {
  // Initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // Initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
  
  Serial.begin(115200);      // Start serial communication
  Serial.println("Task 1 Ready: Press the button...");
}

void loop() {
  // Read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // Check if the pushbutton is pressed (Assuming Active LOW)
  if (buttonState == LOW) {
    Serial.println("Button Pressed! LED ON for 2 seconds.");
    digitalWrite(ledPin, HIGH);  // Turn LED on
    delay(2000);                 // Wait for 2 seconds (Blocking)
    digitalWrite(ledPin, LOW);   // Turn LED off
    Serial.println("LED OFF. System resumed.");
  }
}