initial experimental support for DFSI communication via DVM modem serial interface (DFSI support is disabled from compilation entirely by default, the -DENABLE_DFSI_SUPPORT compiler directive is required to enable it);
Bryan Biedenkapp
4 years ago
parent
1caca50636
commit
4239d21a2b
@ -0,0 +1,211 @@
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/**
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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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* Copyright (C) 2022 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 "p25/P25Defines.h"
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#include "p25/dfsi/DFSIDefines.h"
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#include "p25/dfsi/DFSITrunkPacket.h"
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#include "p25/P25Utils.h"
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#include "p25/Sync.h"
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#include "Log.h"
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#include "Utils.h"
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using namespace p25;
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using namespace p25::dfsi;
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// ---------------------------------------------------------------------------
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// Public Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Resets the data states for the RF interface.
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/// </summary>
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void DFSITrunkPacket::resetRF()
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{
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TrunkPacket::resetRF();
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LC lc = LC();
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m_rfDFSILC = lc;
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}
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/// <summary>
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/// Resets the data states for the network.
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/// </summary>
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void DFSITrunkPacket::resetNet()
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{
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TrunkPacket::resetNet();
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LC lc = LC();
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m_netDFSILC = lc;
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}
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/// <summary>
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/// Process a data frame from the RF interface.
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/// </summary>
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/// <param name="data">Buffer containing data frame.</param>
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/// <param name="len">Length of data frame.</param>
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/// <param name="preDecoded">Flag indicating the TSBK data is pre-decoded TSBK data.</param>
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/// <returns></returns>
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bool DFSITrunkPacket::process(uint8_t* data, uint32_t len, bool preDecoded)
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{
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assert(data != NULL);
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uint8_t tsbk[P25_TSBK_LENGTH_BYTES];
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::memset(tsbk, 0x00U, P25_TSBK_LENGTH_BYTES);
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if (!m_p25->m_control)
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return false;
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if (preDecoded) {
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return TrunkPacket::process(data + 2U, len, preDecoded);
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}
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else {
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resetRF();
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resetNet();
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if (m_rfDFSILC.decodeTSBK(data + 2U)) {
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m_rfTSBK = m_rfDFSILC.tsbk();
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return TrunkPacket::process(tsbk, P25_TSBK_LENGTH_BYTES, true);
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}
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}
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return false;
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}
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// ---------------------------------------------------------------------------
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// Protected Class Members
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// ---------------------------------------------------------------------------
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/// <summary>
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/// Initializes a new instance of the DFSITrunkPacket class.
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/// </summary>
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/// <param name="p25">Instance of the Control class.</param>
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/// <param name="network">Instance of the BaseNetwork class.</param>
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/// <param name="dumpTSBKData">Flag indicating whether TSBK data is dumped to the log.</param>
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/// <param name="debug">Flag indicating whether P25 debug is enabled.</param>
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/// <param name="verbose">Flag indicating whether P25 verbose logging is enabled.</param>
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DFSITrunkPacket::DFSITrunkPacket(Control* p25, network::BaseNetwork* network, bool dumpTSBKData, bool debug, bool verbose) :
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TrunkPacket(p25, network, dumpTSBKData, debug, verbose)
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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 DFSITrunkPacket class.
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/// </summary>
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DFSITrunkPacket::~DFSITrunkPacket()
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{
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/* stub */
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}
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/// <summary>
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/// Helper to write a P25 TDU w/ link control packet.
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/// </summary>
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/// <param name="lc"></param>
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/// <param name="noNetwork"></param>
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void DFSITrunkPacket::writeRF_TDULC(lc::TDULC lc, bool noNetwork)
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{
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// for now this is ignored...
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}
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/// <summary>
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/// Helper to write a single-block P25 TSDU packet.
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/// </summary>
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/// <param name="noNetwork"></param>
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/// <param name="clearBeforeWrite"></param>
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/// <param name="force"></param>
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void DFSITrunkPacket::writeRF_TSDU_SBF(bool noNetwork, bool clearBeforeWrite, bool force)
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{
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if (!m_p25->m_control)
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return;
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uint8_t data[P25_TSDU_FRAME_LENGTH_BYTES + 2U];
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::memset(data + 2U, 0x00U, P25_TSDU_FRAME_LENGTH_BYTES);
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m_rfDFSILC.tsbk(m_rfTSBK);
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// Generate Sync
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Sync::addP25Sync(data + 2U);
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// Generate NID
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m_p25->m_nid.encode(data + 2U, P25_DUID_TSDU);
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// Generate TSBK block
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m_rfTSBK.setLastBlock(true); // always set last block -- this a Single Block TSDU
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m_rfTSBK.encode(data + 2U);
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if (m_debug) {
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LogDebug(LOG_RF, P25_TSDU_STR " DFSI, lco = $%02X, mfId = $%02X, lastBlock = %u, AIV = %u, EX = %u, srcId = %u, dstId = %u, sysId = $%03X, netId = $%05X",
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m_rfTSBK.getLCO(), m_rfTSBK.getMFId(), m_rfTSBK.getLastBlock(), m_rfTSBK.getAIV(), m_rfTSBK.getEX(), m_rfTSBK.getSrcId(), m_rfTSBK.getDstId(),
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m_rfTSBK.getSysId(), m_rfTSBK.getNetId());
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Utils::dump(1U, "!!! *TSDU (SBF) TSBK Block Data", data + P25_PREAMBLE_LENGTH_BYTES + 2U, P25_TSBK_FEC_LENGTH_BYTES);
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}
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// Add busy bits
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m_p25->addBusyBits(data + 2U, P25_TSDU_FRAME_LENGTH_BITS, true, false);
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// Set first busy bits to 1,1
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m_p25->setBusyBits(data + 2U, P25_SS0_START, true, true);
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if (!noNetwork)
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writeNetworkRF(data + 2U, true);
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if (!force) {
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if (clearBeforeWrite) {
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m_p25->m_modem->clearP25Data();
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m_p25->m_queue.clear();
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}
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}
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::memset(data + 2U, 0x00U, P25_TSDU_FRAME_LENGTH_BYTES);
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// Generate DFSI TSBK block
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m_rfDFSILC.encodeTSBK(data + 2U);
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if (m_p25->m_duplex) {
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data[0U] = modem::TAG_DATA;
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data[1U] = 0x00U;
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m_p25->writeQueueRF(data, P25_DFSI_TSBK_FRAME_LENGTH_BYTES + 2U);
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}
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}
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/// <summary>
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/// Helper to write a network single-block P25 TSDU packet.
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/// </summary>
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void DFSITrunkPacket::writeNet_TSDU()
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{
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uint8_t buffer[P25_DFSI_TSBK_FRAME_LENGTH_BYTES + 2U];
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::memset(buffer, 0x00U, P25_DFSI_TSBK_FRAME_LENGTH_BYTES + 2U);
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buffer[0U] = modem::TAG_DATA;
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buffer[1U] = 0x00U;
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// Regenerate TSDU Data
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m_netDFSILC.tsbk(m_netTSBK);
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m_netDFSILC.encodeTSBK(buffer + 2U);
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m_p25->writeQueueNet(buffer, P25_DFSI_TSBK_FRAME_LENGTH_BYTES + 2U);
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if (m_network != NULL)
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m_network->resetP25();
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}
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@ -0,0 +1,87 @@
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/**
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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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* Copyright (C) 2022 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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#if !defined(__P25_DFSI_TRUNK_PACKET_H__)
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#define __P25_DFSI_TRUNK_PACKET_H__
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#include "Defines.h"
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#include "p25/dfsi/LC.h"
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#include "p25/TrunkPacket.h"
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#include "p25/Control.h"
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#include "network/BaseNetwork.h"
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namespace p25
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{
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// ---------------------------------------------------------------------------
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// Class Prototypes
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// ---------------------------------------------------------------------------
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class HOST_SW_API TrunkPacket;
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class HOST_SW_API Control;
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namespace dfsi
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{
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// ---------------------------------------------------------------------------
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// Class Declaration
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// This class implements handling logic for P25 trunking packets using
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// the DFSI protocol instead of the P25 OTA protocol.
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// ---------------------------------------------------------------------------
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class HOST_SW_API DFSITrunkPacket : public TrunkPacket {
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public:
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/// <summary>Resets the data states for the RF interface.</summary>
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virtual void resetRF();
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/// <summary>Resets the data states for the network.</summary>
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virtual void resetNet();
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/// <summary>Process a data frame from the RF interface.</summary>
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virtual bool process(uint8_t* data, uint32_t len, bool preDecoded = false);
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protected:
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friend class DFSIVoicePacket;
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friend class Control;
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LC m_rfDFSILC;
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LC m_netDFSILC;
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/// <summary>Initializes a new instance of the DFSITrunkPacket class.</summary>
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DFSITrunkPacket(Control* p25, network::BaseNetwork* network, bool dumpTSBKData, bool debug, bool verbose);
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/// <summary>Finalizes a instance of the DFSITrunkPacket class.</summary>
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virtual ~DFSITrunkPacket();
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/// <summary>Helper to write a P25 TDU w/ link control packet.</summary>
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virtual void writeRF_TDULC(lc::TDULC lc, bool noNetwork);
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/// <summary>Helper to write a single-block P25 TSDU packet.</summary>
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virtual void writeRF_TSDU_SBF(bool noNetwork, bool clearBeforeWrite = false, bool force = false);
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/// <summary>Helper to write a network P25 TDU w/ link control packet.</summary>
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//virtual void writeNet_TDULC(lc::TDULC lc);
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/// <summary>Helper to write a network single-block P25 TSDU packet.</summary>
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virtual void writeNet_TSDU();
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};
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} // namespace dfsi
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} // namespace p25
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#endif // __P25_DFSI_TRUNK_PACKET_H__
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File diff suppressed because it is too large
Load Diff
@ -0,0 +1,92 @@
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/**
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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) 2022 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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#if !defined(__P25_DFSI_VOICE_PACKET_H__)
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#define __P25_DFSI_VOICE_PACKET_H__
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#include "Defines.h"
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#include "p25/dfsi/LC.h"
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#include "p25/TrunkPacket.h"
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#include "p25/Control.h"
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#include "network/BaseNetwork.h"
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namespace p25
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{
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// ---------------------------------------------------------------------------
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// Class Prototypes
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// ---------------------------------------------------------------------------
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class HOST_SW_API VoicePacket;
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class HOST_SW_API Control;
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namespace dfsi
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{
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// ---------------------------------------------------------------------------
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// Class Declaration
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// This class implements handling logic for P25 voice packets using
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// the DFSI protocol instead of the P25 OTA protocol.
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// ---------------------------------------------------------------------------
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class HOST_SW_API DFSIVoicePacket : public VoicePacket {
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public:
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/// <summary>Resets the data states for the RF interface.</summary>
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virtual void resetRF();
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/// <summary>Resets the data states for the network.</summary>
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virtual void resetNet();
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/// <summary>Process a data frame from the RF interface.</summary>
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virtual bool process(uint8_t* data, uint32_t len);
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/// <summary>Process a data frame from the network.</summary>
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virtual bool processNetwork(uint8_t* data, uint32_t len, lc::LC& control, data::LowSpeedData& lsd, uint8_t& duid);
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protected:
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friend class DFSITrunkPacket;
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friend class Control;
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LC m_rfDFSILC;
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LC m_netDFSILC;
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uint8_t* m_dfsiLDU1;
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uint8_t* m_dfsiLDU2;
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/// <summary>Initializes a new instance of the VoicePacket class.</summary>
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DFSIVoicePacket(Control* p25, network::BaseNetwork* network, bool debug, bool verbose);
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/// <summary>Finalizes a instance of the VoicePacket class.</summary>
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virtual ~DFSIVoicePacket();
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/// <summary>Helper to write a network P25 TDU packet.</summary>
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virtual void writeNet_TDU();
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/// <summary>Helper to write a network P25 LDU1 packet.</summary>
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virtual void writeNet_LDU1();
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/// <summary>Helper to write a network P25 LDU1 packet.</summary>
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virtual void writeNet_LDU2();
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};
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} // namespace dfsi
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} // namespace p25
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#endif // __P25_DFSI_VOICE_PACKET_H__
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Reference in new issue