code: def usb_control_out(library, session, request_type_bitmap_field, request_id, request_value,
                      index, data=""):
      
      length = len(data)
      return library.viUsbControlOut(session, request_type_bitmap_field, request_id,
                                     request_value, index, length, data)
docs: Performs a USB control pipe transfer to the device.
  
      Corresponds to viUsbControlOut function of the VISA library.
  
      :param library: the visa library wrapped by ctypes.
      :param session: Unique logical identifier to a session.
      :param request_type_bitmap_field: bmRequestType parameter of the setup stage of a USB control transfer.
      :param request_id: bRequest parameter of the setup stage of a USB control transfer.
      :param request_value: wValue parameter of the setup stage of a USB control transfer.
      :param index: wIndex parameter of the setup stage of a USB control transfer.
                    This is usually the index of the interface or endpoint.
      :param data: The data buffer that sends the data in the optional data stage of the control transfer.
      :return: return value of the library call.
      :rtype: :class:`pyvisa.constants.StatusCode`