Send and retrieve the Bluetooth module's settings

Settings.ino

void setup() {
  // Start the serial monitor
  /*
    Note: make sure the serial monitor's
    baud rate is set to 115,200
  */
  Serial.begin(115200);
  // Start communication with the Bluetooth module
  Serial1.begin(115200);

  delay(100);
}

void loop() {
  // Get user input
  String toBluetooth = "";
  while (Serial.available()) {
    toBluetooth += (char) Serial.read();
  }
  // Send user input to the Bluetooth module
  Serial1.print(toBluetooth);


  // Get Bluetooth module output
  String toPc = "";
  while (Serial1.available()) {
    toPc += (char) Serial1.read();
  }
  // Send Bluetooth module output to serial monitor
  Serial.print(toPc);
}