141 lines
4.3 KiB
C++
141 lines
4.3 KiB
C++
/*
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* Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
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* Copyright 2010 Kestrel Signal Processing, Inc.
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*
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* This software is distributed under the terms of the GNU Affero Public License.
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* See the COPYING file in the main directory for details.
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*
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* This use of this software may be subject to additional restrictions.
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* See the LEGAL file in the main directory for details.
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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 Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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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 Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "Transceiver.h"
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#include "radioDevice.h"
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#include "DummyLoad.h"
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#include <time.h>
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#include <signal.h>
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#include <GSMCommon.h>
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#include <Logger.h>
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#include <Configuration.h>
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#ifdef RESAMPLE
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#define DEVICERATE 400e3
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#else
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#define DEVICERATE 1625e3/6
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#endif
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using namespace std;
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ConfigurationTable gConfig("/etc/OpenBTS/OpenBTS.db");
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volatile bool gbShutdown = false;
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static void ctrlCHandler(int signo)
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{
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cout << "Received shutdown signal" << endl;;
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gbShutdown = true;
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}
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int main(int argc, char *argv[])
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{
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std::string deviceArgs;
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if (argc == 3)
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{
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deviceArgs = std::string(argv[2]);
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}
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else
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{
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deviceArgs = "";
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}
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if ( signal( SIGINT, ctrlCHandler ) == SIG_ERR )
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{
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cerr << "Couldn't install signal handler for SIGINT" << endl;
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exit(1);
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}
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if ( signal( SIGTERM, ctrlCHandler ) == SIG_ERR )
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{
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cerr << "Couldn't install signal handler for SIGTERM" << endl;
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exit(1);
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}
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// Configure logger.
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gLogInit("transceiver",gConfig.getStr("Log.Level").c_str(),LOG_LOCAL7);
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int numARFCN=1;
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LOG(NOTICE) << "starting transceiver with " << numARFCN << " ARFCNs (argc=" << argc << ")";
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srandom(time(NULL));
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RadioDevice *usrp = RadioDevice::make(DEVICERATE * SAMPSPERSYM, SAMPSPERSYM);
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if (!usrp->open(deviceArgs)) {
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LOG(ALERT) << "Transceiver exiting..." << std::endl;
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return EXIT_FAILURE;
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}
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RadioInterface* radio = new RadioInterface(usrp,3,SAMPSPERSYM,false);
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Transceiver *trx = new Transceiver(gConfig.getNum("TRX.Port"),gConfig.getStr("TRX.IP").c_str(),SAMPSPERSYM,GSM::Time(3,0),radio);
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trx->receiveFIFO(radio->receiveFIFO());
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/*
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signalVector *gsmPulse = generateGSMPulse(2,1);
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BitVector normalBurstSeg = "0000101010100111110010101010010110101110011000111001101010000";
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BitVector normalBurst(BitVector(normalBurstSeg,gTrainingSequence[0]),normalBurstSeg);
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signalVector *modBurst = modulateBurst(normalBurst,*gsmPulse,8,1);
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signalVector *modBurst9 = modulateBurst(normalBurst,*gsmPulse,9,1);
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signalVector *interpolationFilter = createLPF(0.6/mOversamplingRate,6*mOversamplingRate,1);
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signalVector totalBurst1(*modBurst,*modBurst9);
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signalVector totalBurst2(*modBurst,*modBurst);
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signalVector totalBurst(totalBurst1,totalBurst2);
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scaleVector(totalBurst,usrp->fullScaleInputValue());
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double beaconFreq = -1.0*(numARFCN-1)*200e3;
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signalVector finalVec(625*mOversamplingRate);
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for (int j = 0; j < numARFCN; j++) {
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signalVector *frequencyShifter = new signalVector(625*mOversamplingRate);
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frequencyShifter->fill(1.0);
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frequencyShift(frequencyShifter,frequencyShifter,2.0*M_PI*(beaconFreq+j*400e3)/(1625.0e3/6.0*mOversamplingRate));
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signalVector *interpVec = polyphaseResampleVector(totalBurst,mOversamplingRate,1,interpolationFilter);
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multVector(*interpVec,*frequencyShifter);
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addVector(finalVec,*interpVec);
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}
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signalVector::iterator itr = finalVec.begin();
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short finalVecShort[2*finalVec.size()];
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short *shortItr = finalVecShort;
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while (itr < finalVec.end()) {
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*shortItr++ = (short) (itr->real());
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*shortItr++ = (short) (itr->imag());
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itr++;
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}
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usrp->loadBurst(finalVecShort,finalVec.size());
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*/
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trx->start();
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//int i = 0;
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while(!gbShutdown) { sleep(1); }//i++; if (i==60) break;}
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cout << "Shutting down transceiver..." << endl;
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// trx->stop();
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delete trx;
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// delete radio;
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}
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