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//
// Copyright 2011-2012,2014 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/types/tune_request.hpp>
#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>
#include <csignal>
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 send_from_file(
uhd::tx_streamer::sptr tx_stream,
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 and not stop_signal_called){
infile.read((char*)&buff.front(), buff.size()*sizeof(samp_type));
size_t num_tx_samps = size_t(infile.gcount()/sizeof(samp_type));
md.end_of_burst = infile.eof();
tx_stream->send(&buff.front(), num_tx_samps, md);
}
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, ref, wirefmt, channel;
size_t spb;
double rate, freq, gain, bw, delay, lo_off;
//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("short"), "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")
("lo_off", po::value<double>(&lo_off), "Offset for frontend LO in Hz (optional)")
("gain", po::value<double>(&gain), "gain for the RF chain")
("ant", po::value<std::string>(&ant), "antenna selection")
("subdev", po::value<std::string>(&subdev), "subdevice specification")
("bw", po::value<double>(&bw), "analog frontend filter bandwidth in Hz")
("ref", po::value<std::string>(&ref)->default_value("internal"), "reference source (internal, external, mimo)")
("wirefmt", po::value<std::string>(&wirefmt)->default_value("sc16"), "wire format (sc8 or sc16)")
("delay", po::value<double>(&delay)->default_value(0.0), "specify a delay between repeated transmission of file")
("channel", po::value<std::string>(&channel)->default_value("0"), "which channel to use")
("repeat", "repeatedly transmit file")
("int-n", "tune USRP with integer-n tuning")
;
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;
}
bool repeat = vm.count("repeat") > 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_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;
uhd::tune_request_t tune_request;
if(vm.count("lo_off")) tune_request = uhd::tune_request_t(freq, lo_off);
else tune_request = uhd::tune_request_t(freq);
if(vm.count("int-n")) tune_request.args = uhd::device_addr_t("mode_n=integer");
usrp->set_tx_freq(tune_request);
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 analog frontend 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
//Check Ref and LO Lock detect
std::vector<std::string> sensor_names;
sensor_names = usrp->get_tx_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_tx_sensor("lo_locked",0);
std::cout << boost::format("Checking TX: %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 TX: %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 TX: %s ...") % ref_locked.to_pp_string() << std::endl;
UHD_ASSERT_THROW(ref_locked.to_bool());
}
//set sigint if user wants to receive
if(repeat){
std::signal(SIGINT, &sig_int_handler);
std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
}
//create a transmit streamer
std::string cpu_format;
std::vector<size_t> channel_nums;
if (type == "double") cpu_format = "fc64";
else if (type == "float") cpu_format = "fc32";
else if (type == "short") cpu_format = "sc16";
uhd::stream_args_t stream_args(cpu_format, wirefmt);
channel_nums.push_back(boost::lexical_cast<size_t>(channel));
stream_args.channels = channel_nums;
uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
//send from file
do{
if (type == "double") send_from_file<std::complex<double> >(tx_stream, file, spb);
else if (type == "float") send_from_file<std::complex<float> >(tx_stream, file, spb);
else if (type == "short") send_from_file<std::complex<short> >(tx_stream, file, spb);
else throw std::runtime_error("Unknown type " + type);
if(repeat and delay != 0.0) boost::this_thread::sleep(boost::posix_time::milliseconds(delay));
} while(repeat and not stop_signal_called);
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return EXIT_SUCCESS;
}
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