| /* |
| * 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 "radioDevice.h" |
| #include "DummyLoad.h" |
| |
| #include <time.h> |
| #include <signal.h> |
| |
| #include <GSMCommon.h> |
| #include <Logger.h> |
| #include <Configuration.h> |
| |
| #ifdef RESAMPLE |
| #define DEVICERATE 400e3 |
| #else |
| #define DEVICERATE 1625e3/6 |
| #endif |
| |
| 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[]) |
| { |
| std::string deviceArgs; |
| |
| if (argc == 3) |
| { |
| deviceArgs = std::string(argv[2]); |
| } |
| else |
| { |
| deviceArgs = ""; |
| } |
| |
| 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; |
| RadioDevice *usrp = RadioDevice::make(DEVICERATE * SAMPSPERSYM, SAMPSPERSYM); |
| if (!usrp->open(deviceArgs)) { |
| LOG(ALERT) << "Transceiver exiting..." << std::endl; |
| return EXIT_FAILURE; |
| } |
| |
| RadioInterface* radio = new RadioInterface(usrp,3,SAMPSPERSYM,mOversamplingRate,false); |
| Transceiver *trx = new Transceiver(gConfig.getNum("TRX.Port"),gConfig.getStr("TRX.IP").c_str(),SAMPSPERSYM,GSM::Time(3,0),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; |
| } |