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/******************************************************************************
*
* $Id$
*
* Copyright (C) 2012 Florian Pose, Ingenieurgemeinschaft IgH
*
* This file is part of the IgH EtherCAT Master.
*
* The IgH EtherCAT Master is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* The IgH EtherCAT Master 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 the IgH EtherCAT Master; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* ---
*
* The license mentioned above concerns the source code only. Using the
* EtherCAT technology and brand is only permitted in compliance with the
* industrial property and similar rights of Beckhoff Automation GmbH.
*
*****************************************************************************/
/**
\file
EtherCAT CoE emergency ring buffer structure.
*/
/*****************************************************************************/
#ifndef __EC_COE_EMERG_RING_H__
#define __EC_COE_EMERG_RING_H__
#include "globals.h"
/*****************************************************************************/
/** EtherCAT CoE emergency message record.
*/
typedef struct {
u8 data[EC_COE_EMERGENCY_MSG_SIZE]; /**< Message data. */
} ec_coe_emerg_msg_t;
/*****************************************************************************/
/** EtherCAT CoE emergency ring buffer.
*/
typedef struct {
ec_slave_config_t *sc; /**< Slave configuration owning the ring. */
ec_coe_emerg_msg_t *msgs; /**< Message ring. */
size_t size; /**< Ring size. */
unsigned int read_index; /**< Read index. */
unsigned int write_index; /**< Write index. */
unsigned int overruns; /**< Number of overruns since last reset. */
} ec_coe_emerg_ring_t;
/*****************************************************************************/
void ec_coe_emerg_ring_init(ec_coe_emerg_ring_t *, ec_slave_config_t *);
void ec_coe_emerg_ring_clear(ec_coe_emerg_ring_t *);
int ec_coe_emerg_ring_size(ec_coe_emerg_ring_t *, size_t);
void ec_coe_emerg_ring_push(ec_coe_emerg_ring_t *, const u8 *);
int ec_coe_emerg_ring_pop(ec_coe_emerg_ring_t *, u8 *);
int ec_coe_emerg_ring_clear_ring(ec_coe_emerg_ring_t *);
int ec_coe_emerg_ring_overruns(ec_coe_emerg_ring_t *);
/*****************************************************************************/
#endif
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