master/fsm_change.h
author Florian Pose <fp@igh-essen.com>
Tue, 13 Feb 2007 14:18:29 +0000
branchstable-1.2
changeset 1742 9195107c9441
parent 1739 5fcbd29151d2
child 1746 72e7507b3f1b
permissions -rw-r--r--
Removed unwanted label.
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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 state change FSM.
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*/
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/*****************************************************************************/
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#ifndef __EC_FSM_CHANGE__
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#define __EC_FSM_CHANGE__
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#include "globals.h"
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#include "../include/ecrt.h"
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#include "datagram.h"
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#include "slave.h"
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/*****************************************************************************/
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/**
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   Mode of the change state machine.
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*/
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typedef enum {
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    EC_FSM_CHANGE_MODE_FULL, /**< full state change */
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    EC_FSM_CHANGE_MODE_ACK_ONLY /**< only state acknowledgement */
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}
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ec_fsm_change_mode_t;
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/*****************************************************************************/
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typedef struct ec_fsm_change ec_fsm_change_t; /**< \see ec_fsm_change */
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/**
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   EtherCAT state change FSM.
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*/
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struct ec_fsm_change
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{
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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_change_t *); /**< slave state change state function */
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    ec_fsm_change_mode_t mode; /**< full state change, or ack only. */
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    ec_slave_state_t requested_state; /**< input: state */
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    ec_slave_state_t old_state; /**< prior slave state */
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    unsigned long jiffies_start; /**< change timer */
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    uint8_t take_time; /**< take sending timestamp */
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};
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/*****************************************************************************/
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void ec_fsm_change_init(ec_fsm_change_t *, ec_datagram_t *);
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void ec_fsm_change_clear(ec_fsm_change_t *);
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void ec_fsm_change_start(ec_fsm_change_t *, ec_slave_t *, ec_slave_state_t);
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void ec_fsm_change_ack(ec_fsm_change_t *, ec_slave_t *);
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int ec_fsm_change_exec(ec_fsm_change_t *);
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int ec_fsm_change_success(ec_fsm_change_t *);
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/*****************************************************************************/
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#endif