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//
// Copyright 2010-2011 Ettus Research LLC
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
#include <uhd/utils/thread_priority.hpp>
#include <uhd/utils/safe_main.hpp>
#include <uhd/usrp/multi_usrp.hpp>
#include <boost/program_options.hpp>
#include <boost/format.hpp>
#include <boost/thread.hpp>
#include <iostream>
#include <fstream>
#include <csignal>
#include <complex>
namespace po = boost::program_options;
static bool stop_signal_called = false;
void sig_int_handler(int){stop_signal_called = true;}
template<typename samp_type> void recv_to_file(
uhd::usrp::multi_usrp::sptr usrp,
const uhd::io_type_t &io_type,
const std::string &file,
size_t samps_per_buff
){
uhd::rx_metadata_t md;
std::vector<samp_type> buff(samps_per_buff);
std::ofstream outfile(file.c_str(), std::ofstream::binary);
while(not stop_signal_called){
size_t num_rx_samps = usrp->get_device()->recv(
&buff.front(), buff.size(), md, io_type,
uhd::device::RECV_MODE_FULL_BUFF
);
if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
throw std::runtime_error(str(boost::format(
"Unexpected error code 0x%x"
) % md.error_code));
}
outfile.write((const char*)&buff.front(), num_rx_samps*sizeof(samp_type));
}
outfile.close();
}
int UHD_SAFE_MAIN(int argc, char *argv[]){
uhd::set_thread_priority_safe();
//variables to be set by po
std::string args, file, type, ant, subdev;
size_t total_num_samps, spb;
double rate, freq, gain, bw;
//setup the program options
po::options_description desc("Allowed options");
desc.add_options()
("help", "help message")
("args", po::value<std::string>(&args)->default_value(""), "multi uhd device address args")
("file", po::value<std::string>(&file)->default_value("usrp_samples.dat"), "name of the file to write binary samples to")
("type", po::value<std::string>(&type)->default_value("float"), "sample type: double, float, or short")
("nsamps", po::value<size_t>(&total_num_samps)->default_value(0), "total number of samples to receive")
("spb", po::value<size_t>(&spb)->default_value(10000), "samples per buffer")
("rate", po::value<double>(&rate), "rate of incoming samples")
("freq", po::value<double>(&freq), "RF center frequency in Hz")
("gain", po::value<double>(&gain), "gain for the RF chain")
("ant", po::value<std::string>(&ant), "daughterboard antenna selection")
("subdev", po::value<std::string>(&subdev), "daughterboard subdevice specification")
("bw", po::value<double>(&bw), "daughterboard IF filter bandwidth in Hz")
;
po::variables_map vm;
po::store(po::parse_command_line(argc, argv, desc), vm);
po::notify(vm);
//print the help message
if (vm.count("help")){
std::cout << boost::format("UHD RX samples to file %s") % desc << std::endl;
return ~0;
}
//create a usrp device
std::cout << std::endl;
std::cout << boost::format("Creating the usrp device with: %s...") % args << std::endl;
uhd::usrp::multi_usrp::sptr usrp = uhd::usrp::multi_usrp::make(args);
//always select the subdevice first, the channel mapping affects the other settings
if (vm.count("subdev")) usrp->set_rx_subdev_spec(subdev);
std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
//set the sample rate
if (not vm.count("rate")){
std::cerr << "Please specify the sample rate with --rate" << std::endl;
return ~0;
}
std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
usrp->set_rx_rate(rate);
std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_rx_rate()/1e6) << std::endl << std::endl;
//set the center frequency
if (not vm.count("freq")){
std::cerr << "Please specify the center frequency with --freq" << std::endl;
return ~0;
}
std::cout << boost::format("Setting RX Freq: %f MHz...") % (freq/1e6) << std::endl;
usrp->set_rx_freq(freq);
std::cout << boost::format("Actual RX Freq: %f MHz...") % (usrp->get_rx_freq()/1e6) << std::endl << std::endl;
//set the rf gain
if (vm.count("gain")){
std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
usrp->set_rx_gain(gain);
std::cout << boost::format("Actual RX Gain: %f dB...") % usrp->get_rx_gain() << std::endl << std::endl;
}
//set the IF filter bandwidth
if (vm.count("bw")){
std::cout << boost::format("Setting RX Bandwidth: %f MHz...") % bw << std::endl;
usrp->set_rx_bandwidth(bw);
std::cout << boost::format("Actual RX Bandwidth: %f MHz...") % usrp->get_rx_bandwidth() << std::endl << std::endl;
}
//set the antenna
if (vm.count("ant")) usrp->set_rx_antenna(ant);
boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
//setup streaming
uhd::stream_cmd_t stream_cmd((total_num_samps == 0)?
uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS:
uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE
);
stream_cmd.num_samps = total_num_samps;
stream_cmd.stream_now = true;
usrp->issue_stream_cmd(stream_cmd);
if (total_num_samps == 0){
std::signal(SIGINT, &sig_int_handler);
std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
}
//recv to file
if (type == "double") recv_to_file<std::complex<double> >(usrp, uhd::io_type_t::COMPLEX_FLOAT64, file, spb);
else if (type == "float") recv_to_file<std::complex<float> >(usrp, uhd::io_type_t::COMPLEX_FLOAT32, file, spb);
else if (type == "short") recv_to_file<std::complex<short> >(usrp, uhd::io_type_t::COMPLEX_INT16, file, spb);
else throw std::runtime_error("Unknown type " + type);
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return 0;
}
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