232 lines
5.8 KiB
C++
232 lines
5.8 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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "Transceiver.h"
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#include "radioDevice.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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#define CONFIGDB "/etc/OpenBTS/OpenBTS.db"
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/* Samples-per-symbol for downlink path
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* 4 - Uses precision modulator (more computation, less distortion)
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* 1 - Uses minimized modulator (less computation, more distortion)
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*
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* Other values are invalid. Receive path (uplink) is always
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* downsampled to 1 sps. Default to 4 sps for all cases except for
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* ARM and non-SIMD enabled architectures.
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*/
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#if defined(HAVE_NEON) || !defined(HAVE_SSE3)
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#define SPS 1
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#else
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#define SPS 4
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#endif
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ConfigurationTable gConfig(CONFIGDB);
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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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std::cout << "Received shutdown signal" << std::endl;
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gbShutdown = true;
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}
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/*
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* Attempt to open and test the database file before
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* accessing the configuration table. We do this because
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* the global table constructor cannot provide notification
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* in the event of failure.
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*/
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int testConfig(const char *filename)
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{
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int rc, val = 9999;
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sqlite3 *db;
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std::string test = "sadf732zdvj2";
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const char *keys[3] = {
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"Log.Level",
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"TRX.Port",
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"TRX.IP",
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};
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/* Try to open the database */
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rc = sqlite3_open(filename, &db);
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if (rc || !db) {
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std::cerr << "Config: Database could not be opened" << std::endl;
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return -1;
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} else {
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sqlite3_close(db);
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}
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/* Attempt to set a value in the global config */
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if (!gConfig.set(test, val)) {
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std::cerr << "Config: Failed to set test key - "
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<< "permission to access the database?" << std::endl;
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return -1;
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} else {
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gConfig.remove(test);
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}
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/* Attempt to query */
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for (int i = 0; i < 3; i++) {
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try {
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gConfig.getStr(keys[i]);
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} catch (...) {
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std::cerr << "Config: Failed query on " << keys[i] << std::endl;
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return -1;
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}
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}
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return 0;
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}
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int main(int argc, char *argv[])
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{
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int trxPort, radioType, chans = 1, extref = 0, fail = 0, diversity = 0;
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std::string logLevel, trxAddr, deviceArgs = "";
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RadioDevice *usrp = NULL;
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RadioInterface *radio = NULL;
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Transceiver *trx = NULL;
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VectorFIFO *fifo = NULL;
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if (argc == 3) {
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deviceArgs = std::string(argv[2]);
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chans = atoi(argv[1]);
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} else if (argc == 2) {
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chans = atoi(argv[1]);
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} else if (argc != 1) {
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std::cout << argv[0] << " <number of channels> <device args>" << std::endl;
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}
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if (signal(SIGINT, ctrlCHandler) == SIG_ERR) {
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std::cerr << "Couldn't install signal handler for SIGINT" << std::endl;
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return EXIT_FAILURE;
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}
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if (signal(SIGTERM, ctrlCHandler) == SIG_ERR) {
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std::cerr << "Couldn't install signal handler for SIGTERM" << std::endl;
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return EXIT_FAILURE;
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}
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// Configure logger.
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if (testConfig(CONFIGDB) < 0) {
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std::cerr << "Config: Database failure" << std::endl;
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return EXIT_FAILURE;
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}
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logLevel = gConfig.getStr("Log.Level");
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trxPort = gConfig.getNum("TRX.Port");
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trxAddr = gConfig.getStr("TRX.IP");
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if (gConfig.defines("TRX.Reference"))
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extref = gConfig.getNum("TRX.Reference");
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if (extref)
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std::cout << "Using external clock reference" << std::endl;
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else
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std::cout << "Using internal clock reference" << std::endl;
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gLogInit("transceiver", logLevel.c_str(), LOG_LOCAL7);
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srandom(time(NULL));
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if (diversity)
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chans = 2;
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usrp = RadioDevice::make(SPS, chans, diversity);
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radioType = usrp->open(deviceArgs, extref);
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if (radioType < 0) {
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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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switch (radioType) {
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case RadioDevice::NORMAL:
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radio = new RadioInterface(usrp, SPS, chans);
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break;
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case RadioDevice::RESAMP_64M:
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case RadioDevice::RESAMP_100M:
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radio = new RadioInterfaceResamp(usrp, SPS, chans);
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break;
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case RadioDevice::DIVERSITY:
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radio = new RadioInterfaceDiversity(usrp, SPS, chans);
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break;
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default:
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LOG(ALERT) << "Unsupported configuration";
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fail = 1;
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goto shutdown;
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}
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if (!radio->init(radioType)) {
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LOG(ALERT) << "Failed to initialize radio interface";
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fail = 1;
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goto shutdown;
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}
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trx = new Transceiver(trxPort, trxAddr.c_str(),
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SPS, chans, GSM::Time(3,0), radio);
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if (!trx->init()) {
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LOG(ALERT) << "Failed to initialize transceiver";
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fail = 1;
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goto shutdown;
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}
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for (int i = 0; i < chans; i++) {
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fifo = radio->receiveFIFO(i);
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if (fifo && trx->receiveFIFO(fifo, i))
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continue;
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LOG(ALERT) << "Could not attach FIFO to channel " << i;
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fail = 1;
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goto shutdown;
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}
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trx->start();
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while (!gbShutdown)
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sleep(1);
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shutdown:
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std::cout << "Shutting down transceiver..." << std::endl;
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delete trx;
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delete radio;
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delete usrp;
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if (fail)
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return EXIT_FAILURE;
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return 0;
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}
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