Method open

android/src/UsbSerialHelper.java:169–181

(int baud)

    }

    public synchronized AndroidPort open(int baud) throws IOException {
      if (port != null)
        throw new IOException("Port already occupied");

      port = new UsbSerialPort(this, baud);
      if (usbmanager.hasPermission(device)) {
        port.open(usbmanager, device, iface);
      } else {
        requestPermission(device);
      }

      return port;
    }

    public synchronized void permissionGranted() {
      if (!port.isOpen())