uhd: created tx_samples_from_file.cpp and added to rx_samples_to_file.cpp

1 files changed, 122 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..0483eaa76
--- /dev/null
+++ b/host/examples/tx_samples_from_file.cpp
@@ -0,0 +1,122 @@
+//
+// 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;
+    size_t spb;
+    double rate, freq, gain;
+
+    //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"), "choose the sample type: double, float, or short")
+        ("spb", po::value<size_t>(&spb)->default_value(10000), "samples per buffer")
+        ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of outgoing 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")
+    ;
+    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);
+    std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
+
+    //set the rx sample rate
+    std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
+    usrp->set_tx_rate(rate);
+    std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_tx_rate()/1e6) << std::endl << std::endl;
+
+    //set the rx center frequency
+    std::cout << boost::format("Setting RX Freq: %f Mhz...") % (freq/1e6) << std::endl;
+    usrp->set_tx_freq(freq);
+    std::cout << boost::format("Actual RX Freq: %f Mhz...") % (usrp->get_tx_freq()/1e6) << std::endl << std::endl;
+
+    //set the rx rf gain
+    std::cout << boost::format("Setting RX Gain: %f dB...") % gain << std::endl;
+    usrp->set_tx_gain(gain);
+    std::cout << boost::format("Actual RX Gain: %f dB...") % usrp->get_tx_gain() << std::endl << std::endl;
+
+    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;
+}