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/*
* Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
* Copyright 2010 Kestrel Signal Processing, Inc.
*
* This software is distributed under the terms of the GNU Affero Public License.
* See the COPYING file in the main directory for details.
*
* This use of this software may be subject to additional restrictions.
* See the LEGAL file in the main directory for details.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "Transceiver.h"
#include "USRPDevice.h"
#include "DummyLoad.h"
#include <time.h>
#include <signal.h>
#include <GSMCommon.h>
#include <Logger.h>
#include <Configuration.h>
using namespace std;
ConfigurationTable gConfig("/etc/OpenBTS/OpenBTS.db");
volatile bool gbShutdown = false;
static void ctrlCHandler(int signo)
{
cout << "Received shutdown signal" << endl;;
gbShutdown = true;
}
int main(int argc, char *argv[])
{
if ( signal( SIGINT, ctrlCHandler ) == SIG_ERR )
{
cerr << "Couldn't install signal handler for SIGINT" << endl;
exit(1);
}
if ( signal( SIGTERM, ctrlCHandler ) == SIG_ERR )
{
cerr << "Couldn't install signal handler for SIGTERM" << endl;
exit(1);
}
// Configure logger.
gLogInit("transceiver",gConfig.getStr("Log.Level").c_str(),LOG_LOCAL7);
int numARFCN=1;
LOG(NOTICE) << "starting transceiver with " << numARFCN << " ARFCNs (argc=" << argc << ")";
srandom(time(NULL));
int mOversamplingRate = numARFCN/2 + numARFCN;
//DYNDevice *usrp = new DYNDevice(mOversamplingRate*1625.0e3/6.0);
USRPDevice *usrp = new USRPDevice(mOversamplingRate*1625.0e3/6.0);
//DummyLoad *usrp = new DummyLoad(mOversamplingRate*1625.0e3/6.0);
usrp->make();
RadioInterface* radio = new RadioInterface(usrp,3,SAMPSPERSYM,mOversamplingRate,false);
Transceiver *trx = new Transceiver(5700,"127.0.0.1",SAMPSPERSYM,GSM::Time(2,0),radio);
trx->receiveFIFO(radio->receiveFIFO());
/*
signalVector *gsmPulse = generateGSMPulse(2,1);
BitVector normalBurstSeg = "0000101010100111110010101010010110101110011000111001101010000";
BitVector normalBurst(BitVector(normalBurstSeg,gTrainingSequence[0]),normalBurstSeg);
signalVector *modBurst = modulateBurst(normalBurst,*gsmPulse,8,1);
signalVector *modBurst9 = modulateBurst(normalBurst,*gsmPulse,9,1);
signalVector *interpolationFilter = createLPF(0.6/mOversamplingRate,6*mOversamplingRate,1);
signalVector totalBurst1(*modBurst,*modBurst9);
signalVector totalBurst2(*modBurst,*modBurst);
signalVector totalBurst(totalBurst1,totalBurst2);
scaleVector(totalBurst,usrp->fullScaleInputValue());
double beaconFreq = -1.0*(numARFCN-1)*200e3;
signalVector finalVec(625*mOversamplingRate);
for (int j = 0; j < numARFCN; j++) {
signalVector *frequencyShifter = new signalVector(625*mOversamplingRate);
frequencyShifter->fill(1.0);
frequencyShift(frequencyShifter,frequencyShifter,2.0*M_PI*(beaconFreq+j*400e3)/(1625.0e3/6.0*mOversamplingRate));
signalVector *interpVec = polyphaseResampleVector(totalBurst,mOversamplingRate,1,interpolationFilter);
multVector(*interpVec,*frequencyShifter);
addVector(finalVec,*interpVec);
}
signalVector::iterator itr = finalVec.begin();
short finalVecShort[2*finalVec.size()];
short *shortItr = finalVecShort;
while (itr < finalVec.end()) {
*shortItr++ = (short) (itr->real());
*shortItr++ = (short) (itr->imag());
itr++;
}
usrp->loadBurst(finalVecShort,finalVec.size());
*/
trx->start();
//int i = 0;
while(!gbShutdown) { sleep(1); }//i++; if (i==60) break;}
cout << "Shutting down transceiver..." << endl;
// trx->stop();
delete trx;
// delete radio;
}
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