uhd

//

// Copyright 2010 Ettus Research LLC

//

// This program is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// This program is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

//

#ifndef INCLUDED_UHD_TRANSPORT_USB_CONTROL_HPP

#define INCLUDED_UHD_TRANSPORT_USB_CONTROL_HPP

#include "usb_device_handle.hpp"

namespace uhd { namespace transport {

class UHD_API usb_control : boost::noncopyable {

public:

    typedef boost::shared_ptr<usb_control> sptr;

    /*!

     * Create a new usb control transport:

     * This transport is for sending and receiving control information from

     * the host to device using the Default Control Pipe.

     *

     * \param handle a device handle that uniquely identifies a USB device

     */

    static sptr make(usb_device_handle::sptr handle);

    /*!

     * Submit a USB device request:

     * Blocks until the request returns

     *

     * For format and corresponding USB request fields

     * see USB Specification Revision 2.0 - 9.3 USB Device Requests

     *

     * Usage is device specific

     *

     * \param request_type 1-byte bitmask (bmRequestType)

     * \param request      1-byte (bRequest)

     * \param value        2-byte (wValue)

     * \param index        2-byte (wIndex)

     * \param buff         buffer to hold send or receive data

     * \param length       2-byte (wLength)

     * \return             number of bytes submitted

     */

    virtual size_t submit(boost::uint8_t request_type,

                          boost::uint8_t request,

                          boost::uint16_t value,

                          boost::uint16_t index, 

                          unsigned char *buff,

                          boost::uint16_t length) = 0; 

};

}} //namespace

#endif /* INCLUDED_UHD_TRANSPORT_USB_CONTROL_HPP */