    /*====================================================================*
     *
     *   Copyright (c) 2013 Qualcomm Atheros, Inc.
     *
     *   All rights reserved.
     *
     *   Redistribution and use in source and binary forms, with or
     *   without modification, are permitted (subject to the limitations
     *   in the disclaimer below) provided that the following conditions
     *   are met:
     *
     *   * Redistributions of source code must retain the above copyright
     *     notice, this list of conditions and the following disclaimer.
     *
     *   * Redistributions in binary form must reproduce the above
     *     copyright notice, this list of conditions and the following
     *     disclaimer in the documentation and/or other materials
     *     provided with the distribution.
     *
     *   * Neither the name of Qualcomm Atheros nor the names of
     *     its contributors may be used to endorse or promote products
     *     derived from this software without specific prior written
     *     permission.
     *
     *   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE
     *   GRANTED BY THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE
     *   COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
     *   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     *   WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     *   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     *   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     *   NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     *   LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     *   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     *   CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
     *   OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     *   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     *
     *--------------------------------------------------------------------*/

    /*====================================================================*
     *
     *   serial.h - Atheros Serial Line Definitions and declarations;
     *
     *.  Qualcomm Atheros HomePlug AV Powerline Toolkit
     *:  Copyright (c) 2009-2013 by Qualcomm Atheros Inc. ALL RIGHTS RESERVED;
     *;  For demonstration and evaluation only; Not for production use.
     *
     *   Contributor(s):
     *      Charles Maier <cmaier@qca.qualcomm.com>
     *
     *--------------------------------------------------------------------*/

    #ifndef SERIAL_HEADER
    #define SERIAL_HEADER

    /*====================================================================*
     *   system header files;
     *--------------------------------------------------------------------*/

    #include <ctype.h>

    #ifndef WIN32
    #include <termios.h>
    #endif

    /*====================================================================*
     *   custom header files;
     *--------------------------------------------------------------------*/

    #include "../tools/types.h"

    /*====================================================================*
     *
     *--------------------------------------------------------------------*/

    #if defined (WIN32)
    #       define DEVICE "com1:"
    #       define PAUSE(x) Sleep (x)
    #else
    #       define DEVICE "/dev/ttyUSB0"
    #       define PAUSE(x) usleep ((x)*1000)
    #endif

    /*====================================================================*
     *
     *--------------------------------------------------------------------*/

    #define UART_MODE 0
    #define UART_BAUDRATE 115200
    #define UART_DATABITS 8
    #define UART_STOPBITS 1
    #define UART_PARITY 0
    #define UART_FLOWCTRL 0

    #define UART_BUFFERSIZE 4096
    #define UART_BLOCKSIZE 512
    #define UART_PORT "PLCUART"

    /*====================================================================*
     *   Atheros Serial Line Command flags;
     *--------------------------------------------------------------------*/

    #define UART_SILENCE    (1 << 0)
    #define UART_VERBOSE    (1 << 1)
    #define UART_DEFAULT    (1 << 2)
    #define UART_COMMAND    (1 << 3)
    #define UART_WAKE       (1 << 4)
    #define UART_RESPOND    (1 << 5)
    #define UART_ATRV       (1 << 6)
    #define UART_ATRPM      (1 << 7)
    #define UART_ATSK1      (1 << 8)
    #define UART_ATSK2      (1 << 9)
    #define UART_ATZ        (1 << 10)
    #define UART_ATDST1     (1 << 11)
    #define UART_ATDST2     (1 << 12)
    #define UART_ATNI       (1 << 13)
    #define UART_ATFD       (1 << 14)
    #define UART_ATPS       (1 << 15)
    #define UART_ATO        (1 << 16)
    #define UART_ATHSC      (1 << 17)
    #define UART_ATRP       (1 << 18)
    #define UART_ATWPF1     (1 << 19)
    #define UART_ATWPF2     (1 << 20)
    #define UART_ATWNV      (1 << 21)
    #define UART_ATBSZ1     (1 << 22)
    #define UART_ATBSZ2     (1 << 23)
    #define UART_ATTO       (1 << 24)
    #define UART_ATBR       (1 << 25)
    #define UART_ATM        (1 << 26)

    /*====================================================================*
     *
     *   struct command;
     *
     *   structure containing serial command buffer and two pointers; the
     *   buffer is used for both transmit and receive and shared by most
     *   function below;
     *
     *--------------------------------------------------------------------*/

    typedef struct command

    {
    	char buffer [UART_BUFFERSIZE];
    	unsigned length;
    	unsigned offset;
    }

    COMMAND;

    /*====================================================================*
     *
     *--------------------------------------------------------------------*/

    #ifndef WIN32

    signed baudrate (unsigned rate, speed_t * speed);

    #endif

    void openport (struct _file_ * port, flag_t mode);
    void closeport (struct _file_ * port);

    /*====================================================================*
     *   serial command line buffer functions;
     *--------------------------------------------------------------------*/

    void clearcommand ();
    void sendcommand (struct _file_ * port, flag_t flags);
    void readcommand (struct _file_ * port, flag_t flags);
    void insert (char c);
    size_t readframe (signed fd, void * memory, size_t extent);
    void decode (void const * memory, size_t extent);
    void encode (void * memory, size_t extent);
    void string (char * string);
    uint64_t hextoint (unsigned bytes);
    void mustbe (char c);;

    /*====================================================================*
     *
     *--------------------------------------------------------------------*/

    #endif

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