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master/datagram_pair.h
author Florian Pose <fp@igh-essen.com>
Thu, 06 Dec 2012 17:54:23 +0100
branchstable-1.5
changeset 2484 1cf54e2452c4
parent 2453 d461b1f07296
child 2522 ec403cf308eb
permissions -rw-r--r--
Removed unnecessary semaphore uses for emergency requests.
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/******************************************************************************
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 *
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 *  $Id$
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 *
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 *  Copyright (C) 2006-2012  Florian Pose, Ingenieurgemeinschaft IgH
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 *
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 *  This file is part of the IgH EtherCAT Master.
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 *
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 *  The IgH EtherCAT Master is free software; you can redistribute it and/or
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 *  modify it under the terms of the GNU General Public License version 2, as
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 *  published by the Free Software Foundation.
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 *
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 *  The IgH EtherCAT Master is distributed in the hope that it will be useful,
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 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
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 *  Public License for more details.
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 *
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 *  You should have received a copy of the GNU General Public License along
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 *  with the IgH EtherCAT Master; if not, write to the Free Software
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 *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 *
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 *  ---
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 *
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 *  The license mentioned above concerns the source code only. Using the
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 *  EtherCAT technology and brand is only permitted in compliance with the
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 *  industrial property and similar rights of Beckhoff Automation GmbH.
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 *
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 *****************************************************************************/
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/**













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   \file













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   EtherCAT datagram pair structure.













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*/













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/*****************************************************************************/













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#ifndef __EC_DATAGRAM_PAIR_H__













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#define __EC_DATAGRAM_PAIR_H__













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#include <linux/list.h>













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#include "globals.h"













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#include "datagram.h"













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/*****************************************************************************/













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/** Domain datagram pair.













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 */













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typedef struct {













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    struct list_head list; /**< List header. */








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    ec_domain_t *domain;








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    ec_datagram_t datagrams[EC_MAX_NUM_DEVICES]; /**< Datagrams.  */













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#if EC_MAX_NUM_DEVICES > 1








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    uint8_t *send_buffer;








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#endif








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    unsigned int expected_working_counter; /**< Expectord working conter. */








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} ec_datagram_pair_t;













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/*****************************************************************************/













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int ec_datagram_pair_init(ec_datagram_pair_t *, ec_domain_t *, uint32_t,













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        uint8_t *, size_t, const unsigned int []);








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void ec_datagram_pair_clear(ec_datagram_pair_t *);













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uint16_t ec_datagram_pair_process(ec_datagram_pair_t *, uint16_t[]);








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/*****************************************************************************/













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#endif













etherlabmaster