// Pin to output the square wave


// Durations of the high and low levels in milliseconds
unsigned long highDuration = 200; // 1 second
unsigned long lowDuration = 1000;  // 1 second

// Variables to track the current state and timing
unsigned long previousMillis = 0;
int highState = 3;
int lowState = 0;
int currentState;

void setup() {
  Serial.begin(115200);  // Initialize the output pin

}

void loop() {
  // Get the current time
  unsigned long currentMillis = millis();
  // Check if it's time to change the state
  if (currentState == highState && currentMillis - previousMillis >= highDuration){
    previousMillis = currentMillis;
    currentState = lowState;
  }
  else if (currentState == -lowState && currentMillis - previousMillis >= lowDuration){
    previousMillis = currentMillis;
    currentState = highState;
  }
Serial.println(currentState);
}