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Diffstat (limited to 'host/examples/tx_samples_from_file.cpp')
| -rw-r--r-- | host/examples/tx_samples_from_file.cpp | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/host/examples/tx_samples_from_file.cpp b/host/examples/tx_samples_from_file.cpp new file mode 100644 index 000000000..acf899fa9 --- /dev/null +++ b/host/examples/tx_samples_from_file.cpp @@ -0,0 +1,149 @@ +// +// Copyright 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 <complex> + +namespace po = boost::program_options; + +template<typename samp_type> void send_from_file( + uhd::usrp::multi_usrp::sptr usrp, + const uhd::io_type_t &io_type, + const std::string &file, + size_t samps_per_buff +){ + uhd::tx_metadata_t md; + md.start_of_burst = false; + md.end_of_burst = false; + std::vector<samp_type> buff(samps_per_buff); + std::ifstream infile(file.c_str(), std::ifstream::binary); + + //loop until the entire file has been read + while(not md.end_of_burst){ + + infile.read((char*)&buff.front(), buff.size()*sizeof(samp_type)); + size_t num_tx_samps = infile.gcount()/sizeof(samp_type); + + md.end_of_burst = infile.eof(); + + usrp->get_device()->send( + &buff.front(), num_tx_samps, md, io_type, + uhd::device::SEND_MODE_FULL_BUFF + ); + } + + infile.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 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 read binary samples from") + ("type", po::value<std::string>(&type)->default_value("float"), "sample type: double, float, or short") + ("spb", po::value<size_t>(&spb)->default_value(10000), "samples per buffer") + ("rate", po::value<double>(&rate), "rate of outgoing 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 TX samples from 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_tx_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 TX Rate: %f Msps...") % (rate/1e6) << std::endl; + usrp->set_tx_rate(rate); + std::cout << boost::format("Actual TX Rate: %f Msps...") % (usrp->get_tx_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 TX Freq: %f MHz...") % (freq/1e6) << std::endl; + usrp->set_tx_freq(freq); + std::cout << boost::format("Actual TX Freq: %f MHz...") % (usrp->get_tx_freq()/1e6) << std::endl << std::endl; + + //set the rf gain + if (vm.count("gain")){ + std::cout << boost::format("Setting TX Gain: %f dB...") % gain << std::endl; + usrp->set_tx_gain(gain); + std::cout << boost::format("Actual TX Gain: %f dB...") % usrp->get_tx_gain() << std::endl << std::endl; + } + + //set the IF filter bandwidth + if (vm.count("bw")){ + std::cout << boost::format("Setting TX Bandwidth: %f MHz...") % bw << std::endl; + usrp->set_tx_bandwidth(bw); + std::cout << boost::format("Actual TX Bandwidth: %f MHz...") % usrp->get_tx_bandwidth() << std::endl << std::endl; + } + + //set the antenna + if (vm.count("ant")) usrp->set_tx_antenna(ant); + + boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time + + //send from file + if (type == "double") send_from_file<std::complex<double> >(usrp, uhd::io_type_t::COMPLEX_FLOAT64, file, spb); + else if (type == "float") send_from_file<std::complex<float> >(usrp, uhd::io_type_t::COMPLEX_FLOAT32, file, spb); + else if (type == "short") send_from_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; +} |