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

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 *

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 *  $Id$

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 *

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 *  Copyright (C) 2006-2009  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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#include <iostream>

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#include <iomanip>

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using namespace std;

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#include "CommandPhyRead.h"

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

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CommandPhyRead::CommandPhyRead():

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    Command("phy_read", "Output a slave's physical memory contents.")

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{

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}

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

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string CommandPhyRead::helpString() const

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{

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    stringstream str;

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    str << getName() << " [OPTIONS] <OFFSET> <LENGTH>" << endl

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    	<< endl

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    	<< getBriefDescription() << endl

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    	<< endl

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        << "This command requires a single slave to be selected." << endl

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    	<< endl

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        << "Arguments:" << endl

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        << "  OFFSET is the physical memory address. Must" << endl

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        << "         be an unsigned 16 bit number." << endl

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        << "  LENGTH is the number of bytes to read and must also be" << endl

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        << "         an unsigned 16 bit number. OFFSET plus LENGTH" << endl

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        << "         may not exceed 64k." << endl

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        << endl

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    	<< "Command-specific options:" << endl

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        << "  --alias    -a <alias>" << endl

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        << "  --position -p <pos>    Slave selection. See the help of" << endl

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        << "                         the 'slaves' command." << endl

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    	<< endl

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		<< numericInfo();

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	return str.str();

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}

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

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void CommandPhyRead::execute(MasterDevice &m, const StringVector &args)

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{

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    SlaveList slaves;

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    ec_ioctl_slave_phy_t data;

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    stringstream strOffset, strLength, err;

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    uint16_t i;

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    if (args.size() != 2) {

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        err << "'" << getName() << "' takes two arguments!";

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        throwInvalidUsageException(err);

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    }

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    strOffset << args[0];

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    strOffset

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        >> resetiosflags(ios::basefield) // guess base from prefix

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        >> data.offset;

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    if (strOffset.fail()) {

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        err << "Invalid offset '" << args[0] << "'!";

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        throwInvalidUsageException(err);

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    }

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    strLength << args[1];

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    strLength

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        >> resetiosflags(ios::basefield) // guess base from prefix

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        >> data.length;

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    if (strLength.fail()) {

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        err << "Invalid length '" << args[1] << "'!";

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        throwInvalidUsageException(err);

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    }

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    if (!data.length) {

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        return;

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    }

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    if ((uint32_t) data.offset + data.length > 0xffff) {

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        err << "Offset and length exceeding 64k!";

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        throwInvalidUsageException(err);

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    }

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    m.open(MasterDevice::Read);

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    slaves = selectedSlaves(m);

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    if (slaves.size() != 1) {

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        throwSingleSlaveRequired(slaves.size());

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    }

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    data.slave_position = slaves.front().position;

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    data.data = new uint8_t[data.length];

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	try {

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		m.readPhy(&data);

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	} catch (MasterDeviceException &e) {

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        delete [] data.data;

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		throw e;

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	}

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    for (i = 0; i < data.length; i++) {

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        cout << data.data[i];

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    }

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    delete [] data.data;

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}

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