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Diffstat (limited to 'host/examples/rx_samples_to_file.cpp')
| -rw-r--r-- | host/examples/rx_samples_to_file.cpp | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/host/examples/rx_samples_to_file.cpp b/host/examples/rx_samples_to_file.cpp new file mode 100644 index 000000000..5197bfe69 --- /dev/null +++ b/host/examples/rx_samples_to_file.cpp @@ -0,0 +1,218 @@ +// +// 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 <uhd/exception.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 std::string &cpu_format, + const std::string &wire_format, + const std::string &file, + size_t samps_per_buff, + int num_requested_samples +){ + int num_total_samps = 0; + //create a receive streamer + uhd::stream_args_t stream_args(cpu_format,wire_format); + uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args); + + uhd::rx_metadata_t md; + std::vector<samp_type> buff(samps_per_buff); + std::ofstream outfile(file.c_str(), std::ofstream::binary); + bool overflow_message = true; + + //setup streaming + uhd::stream_cmd_t stream_cmd((num_requested_samples == 0)? + uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS: + uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE + ); + stream_cmd.num_samps = num_requested_samples; + stream_cmd.stream_now = true; + stream_cmd.time_spec = uhd::time_spec_t(); + usrp->issue_stream_cmd(stream_cmd); + + while(not stop_signal_called and (num_requested_samples != num_total_samps or num_requested_samples == 0)){ + size_t num_rx_samps = rx_stream->recv(&buff.front(), buff.size(), md, 3.0); + + if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) { + std::cout << boost::format("Timeout while streaming") << std::endl; + break; + } + if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_OVERFLOW){ + if (overflow_message){ + overflow_message = false; + std::cerr << boost::format( + "Got an overflow indication. Please consider the following:\n" + " Your write medium must sustain a rate of %fMB/s.\n" + " Dropped samples will not be written to the file.\n" + " Please modify this example for your purposes.\n" + " This message will not appear again.\n" + ) % (usrp->get_rx_rate()*sizeof(samp_type)/1e6); + } + continue; + } + 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)); + } + + num_total_samps += num_rx_samps; + + 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, ref, wirefmt; + 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("short"), "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") + ("ref", po::value<std::string>(&ref)->default_value("internal"), "waveform type (internal, external, mimo)") + ("wirefmt", po::value<std::string>(&wirefmt)->default_value("sc16"), "wire format (sc8 or sc16)") + ; + 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); + + //Lock mboard clocks + usrp->set_clock_source(ref); + + //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 + + //Check Ref and LO Lock detect + std::vector<std::string> sensor_names; + sensor_names = usrp->get_rx_sensor_names(0); + if (std::find(sensor_names.begin(), sensor_names.end(), "lo_locked") != sensor_names.end()) { + uhd::sensor_value_t lo_locked = usrp->get_rx_sensor("lo_locked",0); + std::cout << boost::format("Checking RX: %s ...") % lo_locked.to_pp_string() << std::endl; + UHD_ASSERT_THROW(lo_locked.to_bool()); + } + sensor_names = usrp->get_mboard_sensor_names(0); + if ((ref == "mimo") and (std::find(sensor_names.begin(), sensor_names.end(), "mimo_locked") != sensor_names.end())) { + uhd::sensor_value_t mimo_locked = usrp->get_mboard_sensor("mimo_locked",0); + std::cout << boost::format("Checking RX: %s ...") % mimo_locked.to_pp_string() << std::endl; + UHD_ASSERT_THROW(mimo_locked.to_bool()); + } + if ((ref == "external") and (std::find(sensor_names.begin(), sensor_names.end(), "ref_locked") != sensor_names.end())) { + uhd::sensor_value_t ref_locked = usrp->get_mboard_sensor("ref_locked",0); + std::cout << boost::format("Checking RX: %s ...") % ref_locked.to_pp_string() << std::endl; + UHD_ASSERT_THROW(ref_locked.to_bool()); + } + + 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, "fc64", wirefmt, file, spb, total_num_samps); + else if (type == "float") recv_to_file<std::complex<float> >(usrp, "fc32", wirefmt, file, spb, total_num_samps); + else if (type == "short") recv_to_file<std::complex<short> >(usrp, "sc16", wirefmt, file, spb, total_num_samps); + else throw std::runtime_error("Unknown type " + type); + + //finished + std::cout << std::endl << "Done!" << std::endl << std::endl; + + return 0; +} |