csu3_am335x/EVSE/GPL/open-plc-utils-0.3/plc/ReadMFG.c

/*====================================================================*
 *
 *   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.
 *
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 *   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
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 *   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;
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 *--------------------------------------------------------------------*/

/*====================================================================*
 *
 *   signed ReadMFG (struct plc * plc, uint16_t MMTYPE);
 *
 *   plc.h
 *
 *   read a manufacturer specific management message of the given
 *   type in platform independent manner; return the number of bytes
 *   read, 0 on timeout or -1 on error;
 *
 *   see SendMME for the send counterpart to this function;
 *
 *   see ReadMME for the vendor specific version of this function;
 *
 *   readpacket behaves like the read function but there are several
 *   readpacket functions in the toolkit and each performs raw packet
 *   i/o differently depending on environment; they all use a channel
 *   structure;
 *
 *
 *   Contributor(s):
 *      Charles Maier
 *      Nathaniel Houghton
 *
 *--------------------------------------------------------------------*/

#ifndef READMFG_SOURCE
#define READMFG_SOURCE

#include <memory.h>

#include "../plc/plc.h"
#include "../ether/channel.h"
#include "../tools/memory.h"
#include "../tools/flags.h"

signed ReadMFG (struct plc * plc, uint8_t MMV, uint16_t MMTYPE)

{
	struct channel * channel = (struct channel *)(plc->channel);
	struct message * message = (struct message *)(plc->message);
	struct homeplug * homeplug = (struct homeplug *)(message);
	while ((plc->packetsize = readpacket (channel, message, sizeof (* message))) > 0)
	{
		if (homeplug->homeplug.MMV != MMV)
		{
			continue;
		}
		if (homeplug->homeplug.MMTYPE != HTOLE16 (MMTYPE))
		{
			continue;
		}
		break;
	}
	return (plc->packetsize);
}


#endif