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79 lines
3.3 KiB
79 lines
3.3 KiB
/**
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* Digital Voice Modem - Host Software
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* GPLv2 Open Source. Use is subject to license terms.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* @package DVM / Host Software
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*
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*/
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//
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// Based on code from the MMDVMHost project. (https://github.com/g4klx/MMDVMHost)
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// Licensed under the GPLv2 License (https://opensource.org/licenses/GPL-2.0)
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//
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/*
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* Copyright (C) 2011-2017 by Jonathan Naylor G4KLX
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* Copyright (C) 2017-2020 by Bryan Biedenkapp N2PLL
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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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 this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "Defines.h"
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#include "modem/NullModem.h"
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#include "Log.h"
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using namespace modem;
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// ---------------------------------------------------------------------------
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// Public Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Initializes a new instance of the NullModem class.
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/// </summary>
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/// <param name="port">Serial port the modem DSP is connected to.</param>
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/// <param name="duplex">Flag indicating the modem is operating in duplex mode.</param>
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/// <param name="rxInvert">Flag indicating the Rx polarity should be inverted.</param>
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/// <param name="txInvert">Flag indicating the Tx polarity should be inverted.</param>
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/// <param name="pttInvert">Flag indicating the PTT polarity should be inverted.</param>
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/// <param name="dcBlocker">Flag indicating whether the DSP DC-level blocking should be enabled.</param>
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/// <param name="cosLockout">Flag indicating whether the COS signal should be used to lockout the modem.</param>
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/// <param name="txDelay">Compensation for transmitter to settle in ms.</param>
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/// <param name="dmrDelay">Compensate for delay in transmitter audio chain in ms. Usually DSP based.</param>
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/// <param name="disableOFlowReset">Flag indicating whether the ADC/DAC overflow reset logic is disabled.</param>
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/// <param name="trace">Flag indicating whether modem DSP trace is enabled.</param>
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/// <param name="debug">Flag indicating whether modem DSP debug is enabled.</param>
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NullModem::NullModem(const std::string& port, bool duplex, bool rxInvert, bool txInvert, bool pttInvert, bool dcBlocker,
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bool cosLockout, uint32_t txDelay, uint32_t dmrDelay, bool disableOFlowReset, bool trace, bool debug) :
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Modem(port, duplex, rxInvert, txInvert, pttInvert, dcBlocker, cosLockout, txDelay, dmrDelay, disableOFlowReset, trace, debug)
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{
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/* stub */
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}
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/// <summary>
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/// Finalizes a instance of the NullModem class.
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/// </summary>
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NullModem::~NullModem()
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{
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/* stub */
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}
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/// <summary>
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/// Opens connection to the modem DSP.
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/// </summary>
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/// <returns>True, if connection to modem is established, otherwise false.</returns>
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bool NullModem::open()
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{
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LogMessage(LOG_MODEM, "Initializing NULL modem");
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return true;
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}
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