#define BUTTON_PIN 27  
#define LED_1 0  
#define LED_2 1
#define LED_3 26 

int buttonPressCount = 0; // Global variable to keep track of the number of button presses

void setup() {
  pinMode(LED_1, OUTPUT);
  pinMode(LED_2, OUTPUT);
  pinMode(LED_3, OUTPUT);
  pinMode(BUTTON_PIN, INPUT_PULLUP);
  Serial.begin(9600);
  delay(2000);
  Serial.println("This is LED button example for FAB ACADEMY 2024");
}

void loop() { 
  int buttonState = digitalRead(BUTTON_PIN);
  if (buttonState == HIGH) {    
    buttonPressCount++; // Increment the button press count
    toggleLED(); // Call the function to toggle the LEDs
    // Wait for the button to be released
    while(digitalRead(BUTTON_PIN) == HIGH); 
    delay(50); 
  } 
}

void toggleLED() {
  if (buttonPressCount == 1) {
    digitalWrite(LED_1, HIGH);
    digitalWrite(LED_2, LOW);
    digitalWrite(LED_3, LOW);
    Serial.println("LED 1 ON");
  }
  else if (buttonPressCount == 2) {
    digitalWrite(LED_1, LOW);
    digitalWrite(LED_2, HIGH);
    digitalWrite(LED_3, LOW);
    Serial.println("LED 2 ON");
  }
  else if (buttonPressCount == 3) {
    digitalWrite(LED_1, LOW);
    digitalWrite(LED_2, LOW);
    digitalWrite(LED_3, HIGH);
    Serial.println("LED 3 ON");
  }
  
  if (buttonPressCount >= 3) { // Reset to 1 to start from the first LED again after the third press
    buttonPressCount = 0;
  }
}