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95 lines
1.9 KiB
95 lines
1.9 KiB
/*
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* Copyright (C) 2014 by Jonathan Naylor G4KLX
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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 "DStarDefines.h"
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#include "Modem.h"
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const unsigned int BUFFER_LENGTH = 200U;
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CModem::CModem() :
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wxThread(wxTHREAD_JOINABLE),
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m_rxData(1000U),
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m_mutex(),
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m_tx(false),
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m_stopped(false),
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m_readType(DSMTT_NONE),
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m_readLength(0U),
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m_readBuffer(NULL)
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{
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m_readBuffer = new unsigned char[BUFFER_LENGTH];
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}
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CModem::~CModem()
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{
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delete[] m_readBuffer;
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}
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bool CModem::isTX()
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{
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return m_tx;
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}
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DSMT_TYPE CModem::read()
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{
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m_readLength = 0U;
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if (m_rxData.isEmpty())
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return DSMTT_NONE;
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wxMutexLocker locker(m_mutex);
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unsigned char hdr[2U];
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m_rxData.getData(hdr, 2U);
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m_readType = DSMT_TYPE(hdr[0U]);
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m_readLength = hdr[1U];
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m_rxData.getData(m_readBuffer, m_readLength);
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return m_readType;
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}
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CHeaderData* CModem::readHeader()
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{
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if (m_readType != DSMTT_HEADER)
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return NULL;
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return new CHeaderData(m_readBuffer, RADIO_HEADER_LENGTH_BYTES, false);
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}
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unsigned int CModem::readData(unsigned char* data, unsigned int length)
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{
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if (m_readType != DSMTT_DATA)
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return 0U;
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if (length < m_readLength) {
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::memcpy(data, m_readBuffer, length);
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return length;
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} else {
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::memcpy(data, m_readBuffer, m_readLength);
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return m_readLength;
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}
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}
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void CModem::stop()
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{
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m_stopped = true;
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Wait();
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}
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