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

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 *

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 *  $Id$

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 *

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 *  Copyright (C) 2006  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

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 *  and/or modify it under the terms of the GNU General Public License

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 *  as published by the Free Software Foundation; either version 2 of the

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 *  License, or (at your option) any later version.

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 *

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 *  The IgH EtherCAT Master is distributed in the hope that it will be

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 *  useful, but WITHOUT ANY WARRANTY; without even the implied warranty of

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 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

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 *  GNU General 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

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 *  along 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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 *  The right to use EtherCAT Technology is granted and comes free of

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 *  charge under condition of compatibility of product made by

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 *  Licensee. People intending to distribute/sell products based on the

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 *  code, have to sign an agreement to guarantee that products using

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 *  software based on IgH EtherCAT master stay compatible with the actual

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 *  EtherCAT specification (which are released themselves as an open

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 *  standard) as the (only) precondition to have the right to use EtherCAT

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 *  Technology, IP and trade marks.

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 *

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

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/**

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   \file

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   EtherCAT CoE state machines.

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*/

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

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#ifndef __EC_FSM_COE_H__

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#define __EC_FSM_COE_H__

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#include "globals.h"

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#include "datagram.h"

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#include "slave.h"

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#include "sdo.h"

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#include "sdo_request.h"

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

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typedef struct ec_fsm_coe ec_fsm_coe_t; /**< \see ec_fsm_coe */

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/** Finite state machines for the CANopen-over-EtherCAT protocol.

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 */

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struct ec_fsm_coe {

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    ec_slave_t *slave; /**< slave the FSM runs on */

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    ec_datagram_t *datagram; /**< datagram used in the state machine */

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    unsigned int retries; /**< retries upon datagram timeout */

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    void (*state)(ec_fsm_coe_t *); /**< CoE state function */

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    unsigned long jiffies_start; /**< CoE timestamp. */

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    ec_sdo_t *sdo; /**< current Sdo */

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    uint8_t subindex; /**< current subindex */

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    ec_sdo_request_t *request; /**< Sdo request */

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    uint8_t toggle; /**< toggle bit for segment commands */

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};

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

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void ec_fsm_coe_init(ec_fsm_coe_t *, ec_datagram_t *);

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void ec_fsm_coe_clear(ec_fsm_coe_t *);

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void ec_fsm_coe_dictionary(ec_fsm_coe_t *, ec_slave_t *);

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void ec_fsm_coe_transfer(ec_fsm_coe_t *, ec_slave_t *, ec_sdo_request_t *);

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int ec_fsm_coe_exec(ec_fsm_coe_t *);

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int ec_fsm_coe_success(ec_fsm_coe_t *);

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

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#endif