diff options
Diffstat (limited to 'host/examples/rx_samples_to_file.cpp')
| -rw-r--r-- | host/examples/rx_samples_to_file.cpp | 72 |
1 files changed, 55 insertions, 17 deletions
diff --git a/host/examples/rx_samples_to_file.cpp b/host/examples/rx_samples_to_file.cpp index bbfcc6d7c..61add87c7 100644 --- a/host/examples/rx_samples_to_file.cpp +++ b/host/examples/rx_samples_to_file.cpp @@ -23,10 +23,14 @@ #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, @@ -37,7 +41,7 @@ template<typename samp_type> void recv_to_file( std::vector<samp_type> buff(samps_per_buff); std::ofstream outfile(file.c_str(), std::ofstream::binary); - while(true){ + 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 @@ -60,9 +64,9 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ uhd::set_thread_priority_safe(); //variables to be set by po - std::string args, file, type; + std::string args, file, type, ant, subdev; size_t total_num_samps, spb; - double rate, freq, gain; + double rate, freq, gain, bw; //setup the program options po::options_description desc("Allowed options"); @@ -70,12 +74,15 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ ("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"), "choose the sample type: double, float, or short") - ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive") + ("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)->default_value(100e6/16), "rate of incoming samples") - ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz") - ("gain", po::value<double>(&gain)->default_value(0), "gain for the RF chain") + ("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), "select antenna") + ("subdev", po::value<std::string>(&subdev), "select subdevice") + ("bw", po::value<double>(&bw), "select IF filter bandwidth in Hz") ; po::variables_map vm; po::store(po::parse_command_line(argc, argv, desc), vm); @@ -91,30 +98,61 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ 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 rx sample rate + //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 rx center frequency - std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << 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; + 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 rx rf 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(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE); + 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); |