master/sdo_entry.c
author Martin Troxler <martin.troxler@komaxgroup.com>
Fri, 07 May 2010 15:25:55 +0200
changeset 1987 f452c93f7723
parent 1382 cb2188d111f3
permissions -rw-r--r--
Improved distributed clock offset calculation to speed-up initial drift compensation
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/******************************************************************************
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 *
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 *  $Id$
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 *
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 *  Copyright (C) 2006-2008  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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   CANopen over EtherCAT SDO entry functions.
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*/
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/*****************************************************************************/
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#include <linux/slab.h>
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#include "sdo_entry.h"
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/*****************************************************************************/
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/** Constructor.
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 */
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void ec_sdo_entry_init(
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        ec_sdo_entry_t *entry, /**< SDO entry. */
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        ec_sdo_t *sdo, /**< Parent SDO. */
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        uint8_t subindex /**< Subindex. */
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        )
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{
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    entry->sdo = sdo;
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    entry->subindex = subindex;
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    entry->data_type = 0x0000;
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    entry->bit_length = 0;
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    entry->read_access[EC_SDO_ENTRY_ACCESS_PREOP] = 0;
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    entry->read_access[EC_SDO_ENTRY_ACCESS_SAFEOP] = 0;
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    entry->read_access[EC_SDO_ENTRY_ACCESS_OP] = 0;
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    entry->write_access[EC_SDO_ENTRY_ACCESS_PREOP] = 0;
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    entry->write_access[EC_SDO_ENTRY_ACCESS_SAFEOP] = 0;
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    entry->write_access[EC_SDO_ENTRY_ACCESS_OP] = 0;
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    entry->description = NULL;
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}
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/*****************************************************************************/
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/** Destructor.
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 */
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void ec_sdo_entry_clear(
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        ec_sdo_entry_t *entry /**< SDO entry. */
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        )
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{
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    if (entry->description)
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        kfree(entry->description);
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}
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/*****************************************************************************/