master/fmmu.c
author Florian Pose <fp@igh-essen.com>
Mon, 10 Sep 2007 12:47:03 +0000
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parent 635 d304ef4af542
permissions -rw-r--r--
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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 FMMU methods.
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*/
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/*****************************************************************************/
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#include "globals.h"
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#include "slave.h"
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#include "master.h"
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#include "fmmu.h"
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/*****************************************************************************/
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/**
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 * FMMU Constructor.
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 */
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void ec_fmmu_init(
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        ec_fmmu_t *fmmu, /**< EtherCAT FMMU */
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        ec_slave_t *slave, /**< EtherCAT slave */
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        unsigned int index /**< FMMU index */
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        )
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{
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    fmmu->slave = slave;
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    fmmu->index = index;
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}
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/*****************************************************************************/
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/**
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 * Initializes an FMMU configuration page.
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 * The referenced memory (\a data) must be at least EC_FMMU_SIZE bytes.
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 */
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void ec_fmmu_config(
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        const ec_fmmu_t *fmmu, /**< EtherCAT FMMU */
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        uint8_t *data /**> configuration memory */
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        )
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{
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    size_t sync_size = ec_sync_size(fmmu->sync);
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    if (fmmu->slave->master->debug_level) {
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        EC_DBG("FMMU%u: LogAddr 0x%08X, Size %3i, PhysAddr 0x%04X, Dir %s\n",
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               fmmu->index, fmmu->logical_start_address,
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               sync_size, fmmu->sync->physical_start_address,
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               ((fmmu->sync->control_register & 0x04) ? "out" : "in"));
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    }
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    EC_WRITE_U32(data,      fmmu->logical_start_address);
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    EC_WRITE_U16(data + 4,  sync_size); // size of fmmu
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    EC_WRITE_U8 (data + 6,  0x00); // logical start bit
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    EC_WRITE_U8 (data + 7,  0x07); // logical end bit
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    EC_WRITE_U16(data + 8,  fmmu->sync->physical_start_address);
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    EC_WRITE_U8 (data + 10, 0x00); // physical start bit
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    EC_WRITE_U8 (data + 11, ((fmmu->sync->control_register & 0x04)
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                             ? 0x02 : 0x01));
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    EC_WRITE_U16(data + 12, 0x0001); // enable
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    EC_WRITE_U16(data + 14, 0x0000); // reserved
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}
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/*****************************************************************************/