void setup() {
  // Initialize serial communication at 115200 bits per second
  Serial.begin(115200);
}

void loop() {
  Serial.println("Hello from STM32!"); // Print a message
  delay(1000);                         // Wait for one second

  // Read from Serial Monitor and echo back
  if (Serial.available() > 0) {
    char receivedChar = Serial.read(); // Read the incoming byte
    Serial.print("I received: ");
    Serial.println(receivedChar);
  }
}