// FabAcademy 2026 - XIAO RP2040
// Button cycles LED: OFF -> ON -> BLINK -> OFF

const int LED1 = 29;
const int LED2 = 7;

const int BUTTON1 = 0;
const int BUTTON2 = 6;

int stateLED1 = 0;
int stateLED2 = 0;

bool lastButton1 = HIGH;
bool lastButton2 = HIGH;

unsigned long previousMillis = 0;
const long blinkInterval = 500;

bool blinkState = LOW;

void setup() {

  pinMode(LED1, OUTPUT);
  pinMode(LED2, OUTPUT);

  pinMode(BUTTON1, INPUT);
  pinMode(BUTTON2, INPUT);

  digitalWrite(LED1, LOW);
  digitalWrite(LED2, LOW);

}

void loop() {

  bool button1 = digitalRead(BUTTON1);
  bool button2 = digitalRead(BUTTON2);

  // BUTTON1 cambia estado LED1
  if (button1 == LOW && lastButton1 == HIGH) {
    stateLED1++;
    if (stateLED1 > 2) stateLED1 = 0;
    delay(200);
  }

  // BUTTON2 cambia estado LED2
  if (button2 == LOW && lastButton2 == HIGH) {
    stateLED2++;
    if (stateLED2 > 2) stateLED2 = 0;
    delay(200);
  }

  lastButton1 = button1;
  lastButton2 = button2;

  // control blink
  unsigned long currentMillis = millis();
  if (currentMillis - previousMillis >= blinkInterval) {
    previousMillis = currentMillis;
    blinkState = !blinkState;
  }

  // LED1 comportamiento
  if (stateLED1 == 0) {
    digitalWrite(LED1, LOW);
  }
  else if (stateLED1 == 1) {
    digitalWrite(LED1, HIGH);
  }
  else if (stateLED1 == 2) {
    digitalWrite(LED1, blinkState);
  }

  // LED2 comportamiento
  if (stateLED2 == 0) {
    digitalWrite(LED2, LOW);
  }
  else if (stateLED2 == 1) {
    digitalWrite(LED2, HIGH);
  }
  else if (stateLED2 == 2) {
    digitalWrite(LED2, blinkState);
  }

}