// Define the GPIO pins
const int pin1 = 2; // GPIO pin 1
const int pin2 = 3; // GPIO pin 2

// Define the sequence: (0, 0), (0, 1), (1, 0), (1, 1)
int brakeSequence[][2] = {
  {0, 0},
  {0, 1},
  {1, 0},
  {1, 1}
};

int currentStep = 0; // Track the current step in the sequence

void setup() {
  // Initialize the GPIO pins as outputs
  pinMode(pin1, OUTPUT);
  pinMode(pin2, OUTPUT);
  
  // Set the initial state of the pins
  digitalWrite(pin1, HIGH); // Pin 1 initial state is HIGH (1)
  digitalWrite(pin2, LOW);  // Pin 2 initial state is LOW (0)
}

void loop() {
  // Set the GPIO pins based on the current sequence step
  digitalWrite(pin1, brakeSequence[currentStep][0]);
  digitalWrite(pin2, brakeSequence[currentStep][1]);
  
  // Move to the next step in the sequence
  currentStep = (currentStep + 1) % 4;
  
  // Wait for 500ms before changing to the next state
  delay(500);
}