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-rw-r--r--host/examples/CMakeLists.txt55
-rw-r--r--host/examples/ascii_art_dft.hpp320
-rw-r--r--host/examples/benchmark_rate.cpp243
-rw-r--r--host/examples/latency_test.cpp168
-rw-r--r--host/examples/network_relay.cpp227
-rw-r--r--host/examples/rx_ascii_art_dft.cpp198
-rw-r--r--host/examples/rx_multi_samples.cpp178
-rw-r--r--host/examples/rx_samples_to_file.cpp218
-rw-r--r--host/examples/rx_samples_to_udp.cpp172
-rw-r--r--host/examples/rx_timed_samples.cpp128
-rw-r--r--host/examples/test_messages.cpp354
-rw-r--r--host/examples/test_pps_input.cpp62
-rw-r--r--host/examples/tx_bursts.cpp164
-rw-r--r--host/examples/tx_samples_from_file.cpp174
-rw-r--r--host/examples/tx_timed_samples.cpp128
-rw-r--r--host/examples/tx_waveforms.cpp261
16 files changed, 3050 insertions, 0 deletions
diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
new file mode 100644
index 000000000..3c9a3880a
--- /dev/null
+++ b/host/examples/CMakeLists.txt
@@ -0,0 +1,55 @@
+#
+# 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/>.
+#
+
+########################################################################
+# example applications
+########################################################################
+SET(example_sources
+ benchmark_rate.cpp
+ network_relay.cpp
+ rx_multi_samples.cpp
+ rx_samples_to_file.cpp
+ rx_samples_to_udp.cpp
+ rx_timed_samples.cpp
+ test_messages.cpp
+ test_pps_input.cpp
+ tx_bursts.cpp
+ tx_samples_from_file.cpp
+ tx_timed_samples.cpp
+ tx_waveforms.cpp
+ latency_test.cpp
+)
+
+#for each source: build an executable and install
+FOREACH(example_source ${example_sources})
+ GET_FILENAME_COMPONENT(example_name ${example_source} NAME_WE)
+ ADD_EXECUTABLE(${example_name} ${example_source})
+ TARGET_LINK_LIBRARIES(${example_name} uhd)
+ INSTALL(TARGETS ${example_name} RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
+ENDFOREACH(example_source)
+
+########################################################################
+# ASCII Art DFT - requires curses, so this part is optional
+########################################################################
+FIND_PACKAGE(Curses)
+
+IF(CURSES_FOUND)
+ INCLUDE_DIRECTORIES(${CURSES_INCLUDE_DIR})
+ ADD_EXECUTABLE(rx_ascii_art_dft rx_ascii_art_dft.cpp)
+ TARGET_LINK_LIBRARIES(rx_ascii_art_dft uhd ${CURSES_LIBRARIES})
+ INSTALL(TARGETS rx_ascii_art_dft RUNTIME DESTINATION ${PKG_LIB_DIR}/examples COMPONENT examples)
+ENDIF(CURSES_FOUND)
diff --git a/host/examples/ascii_art_dft.hpp b/host/examples/ascii_art_dft.hpp
new file mode 100644
index 000000000..ee2267c2d
--- /dev/null
+++ b/host/examples/ascii_art_dft.hpp
@@ -0,0 +1,320 @@
+//
+// ASCII Art DFT Plotter - Josh Blum
+//
+
+#ifndef ASCII_ART_DFT_HPP
+#define ASCII_ART_DFT_HPP
+
+#include <string>
+#include <cstddef>
+#include <vector>
+#include <complex>
+#include <stdexcept>
+
+namespace acsii_art_dft{
+
+ //! Type produced by the log power DFT function
+ typedef std::vector<float> log_pwr_dft_type;
+
+ /*!
+ * Get a logarithmic power DFT of the input samples.
+ * Samples are expected to be in the range [-1.0, 1.0].
+ * \param samps a pointer to an array of complex samples
+ * \param nsamps the number of samples in the array
+ * \return a real range of DFT bins in units of dB
+ */
+ template <typename T> log_pwr_dft_type log_pwr_dft(
+ const std::complex<T> *samps, size_t nsamps
+ );
+
+ /*!
+ * Convert a DFT to a piroundable ascii plot.
+ * \param dft the log power dft bins
+ * \param width the frame width in characters
+ * \param height the frame height in characters
+ * \param samp_rate the sample rate in Sps
+ * \param dc_freq the DC frequency in Hz
+ * \param dyn_rng the dynamic range in dB
+ * \param ref_lvl the reference level in dB
+ * \return the plot as an ascii string
+ */
+ std::string dft_to_plot(
+ const log_pwr_dft_type &dft,
+ size_t width,
+ size_t height,
+ double samp_rate,
+ double dc_freq,
+ float dyn_rng,
+ float ref_lvl
+ );
+
+} //namespace ascii_dft
+
+/***********************************************************************
+ * Implementation includes
+ **********************************************************************/
+#include <cmath>
+#include <sstream>
+#include <algorithm>
+
+/***********************************************************************
+ * Helper functions
+ **********************************************************************/
+namespace {/*anon*/
+
+ static const double pi = double(std::acos(-1.0));
+
+ //! Round a floating-point value to the nearest integer
+ template <typename T> int iround(T val){
+ return (val > 0)? int(val + 0.5) : int(val - 0.5);
+ }
+
+ //! Pick the closest number that is nice to display
+ template <typename T> T to_clean_num(const T num){
+ if (num == 0) return 0;
+ const T pow10 = std::pow(T(10), int(std::floor(std::log10(std::abs(num)))));
+ const T norm = std::abs(num)/pow10;
+ static const int cleans[] = {1, 2, 5, 10};
+ int clean = cleans[0];
+ for (size_t i = 1; i < sizeof(cleans)/sizeof(cleans[0]); i++){
+ if (std::abs(norm - cleans[i]) < std::abs(norm - clean))
+ clean = cleans[i];
+ }
+ return ((num < 0)? -1 : 1)*clean*pow10;
+ }
+
+ //! Compute an FFT with pre-computed factors using Cooley-Tukey
+ template <typename T> std::complex<T> ct_fft_f(
+ const std::complex<T> *samps, size_t nsamps,
+ const std::complex<T> *factors,
+ size_t start = 0, size_t step = 1
+ ){
+ if (nsamps == 1) return samps[start];
+ std::complex<T> E_k = ct_fft_f(samps, nsamps/2, factors+1, start, step*2);
+ std::complex<T> O_k = ct_fft_f(samps, nsamps/2, factors+1, start+step, step*2);
+ return E_k + factors[0]*O_k;
+ }
+
+ //! Compute an FFT for a particular bin k using Cooley-Tukey
+ template <typename T> std::complex<T> ct_fft_k(
+ const std::complex<T> *samps, size_t nsamps, size_t k
+ ){
+ //pre-compute the factors to use in Cooley-Tukey
+ std::vector<std::complex<T> > factors;
+ for (size_t N = nsamps; N != 0; N /= 2){
+ factors.push_back(std::exp(std::complex<T>(0, T(-2*pi*k/N))));
+ }
+ return ct_fft_f(samps, nsamps, &factors.front());
+ }
+
+ //! Helper class to build a DFT plot frame
+ class frame_type{
+ public:
+ frame_type(size_t width, size_t height):
+ _frame(width-1, std::vector<char>(height, ' '))
+ {
+ /* NOP */
+ }
+
+ //accessors to parts of the frame
+ char &get_plot(size_t b, size_t z){return _frame.at(b+albl_w).at(z+flbl_h);}
+ char &get_albl(size_t b, size_t z){return _frame.at(b) .at(z+flbl_h);}
+ char &get_ulbl(size_t b) {return _frame.at(b) .at(flbl_h-1);}
+ char &get_flbl(size_t b) {return _frame.at(b+albl_w).at(flbl_h-1);}
+
+ //dimension accessors
+ size_t get_plot_h(void) const{return _frame.front().size() - flbl_h;}
+ size_t get_plot_w(void) const{return _frame.size() - albl_w;}
+ size_t get_albl_w(void) const{return albl_w;}
+
+ std::string to_string(void){
+ std::stringstream frame_ss;
+ for (size_t z = 0; z < _frame.front().size(); z++){
+ for (size_t b = 0; b < _frame.size(); b++){
+ frame_ss << _frame[b][_frame[b].size()-z-1];
+ }
+ frame_ss << std::endl;
+ }
+ return frame_ss.str();
+ }
+
+ private:
+ static const size_t albl_w = 6, flbl_h = 1;
+ std::vector<std::vector<char> > _frame;
+ };
+
+} //namespace /*anon*/
+
+/***********************************************************************
+ * Implementation code
+ **********************************************************************/
+namespace acsii_art_dft{
+
+ //! skip constants for amplitude and frequency labels
+ static const size_t albl_skip = 5, flbl_skip = 20;
+
+ template <typename T> log_pwr_dft_type log_pwr_dft(
+ const std::complex<T> *samps, size_t nsamps
+ ){
+ if (nsamps & (nsamps - 1))
+ throw std::runtime_error("num samps is not a power of 2");
+
+ //compute the window
+ double win_pwr = 0;
+ std::vector<std::complex<T> > win_samps;
+ for(size_t n = 0; n < nsamps; n++){
+ //double w_n = 1;
+ //double w_n = 0.54 //hamming window
+ // -0.46*std::cos(2*pi*n/(nsamps-1))
+ //;
+ double w_n = 0.35875 //blackman-harris window
+ -0.48829*std::cos(2*pi*n/(nsamps-1))
+ +0.14128*std::cos(4*pi*n/(nsamps-1))
+ -0.01168*std::cos(6*pi*n/(nsamps-1))
+ ;
+ //double w_n = 1 // flat top window
+ // -1.930*std::cos(2*pi*n/(nsamps-1))
+ // +1.290*std::cos(4*pi*n/(nsamps-1))
+ // -0.388*std::cos(6*pi*n/(nsamps-1))
+ // +0.032*std::cos(8*pi*n/(nsamps-1))
+ //;
+ win_samps.push_back(T(w_n)*samps[n]);
+ win_pwr += w_n*w_n;
+ }
+
+ //compute the log-power dft
+ log_pwr_dft_type log_pwr_dft;
+ for(size_t k = 0; k < nsamps; k++){
+ std::complex<T> dft_k = ct_fft_k(&win_samps.front(), nsamps, k);
+ log_pwr_dft.push_back(float(
+ + 20*std::log10(std::abs(dft_k))
+ - 20*std::log10(T(nsamps))
+ - 10*std::log10(win_pwr/nsamps)
+ + 3
+ ));
+ }
+
+ return log_pwr_dft;
+ }
+
+ std::string dft_to_plot(
+ const log_pwr_dft_type &dft_,
+ size_t width,
+ size_t height,
+ double samp_rate,
+ double dc_freq,
+ float dyn_rng,
+ float ref_lvl
+ ){
+ frame_type frame(width, height); //fill this frame
+
+ //re-order the dft so dc in in the center
+ const size_t num_bins = dft_.size() - 1 + dft_.size()%2; //make it odd
+ log_pwr_dft_type dft(num_bins);
+ for (size_t n = 0; n < num_bins; n++){
+ dft[n] = dft_[(n + num_bins/2)%num_bins];
+ }
+
+ //fill the plot with dft bins
+ for (size_t b = 0; b < frame.get_plot_w(); b++){
+ //indexes from the dft to grab for the plot
+ const size_t n_start = std::max(iround(double(b-0.5)*(num_bins-1)/(frame.get_plot_w()-1)), 0);
+ const size_t n_stop = std::min(iround(double(b+0.5)*(num_bins-1)/(frame.get_plot_w()-1)), int(num_bins));
+
+ //calculate val as the max across points
+ float val = dft.at(n_start);
+ for (size_t n = n_start; n < n_stop; n++) val = std::max(val, dft.at(n));
+
+ const float scaled = (val - (ref_lvl - dyn_rng))*(frame.get_plot_h()-1)/dyn_rng;
+ for (size_t z = 0; z < frame.get_plot_h(); z++){
+ static const std::string syms(".:!|");
+ if (scaled-z > 1) frame.get_plot(b, z) = syms.at(syms.size()-1);
+ else if (scaled-z > 0) frame.get_plot(b, z) = syms.at(size_t((scaled-z)*syms.size()));
+ }
+ }
+
+ //create vertical amplitude labels
+ const float db_step = to_clean_num(dyn_rng/(frame.get_plot_h()-1)*albl_skip);
+ for (
+ float db = db_step*(int((ref_lvl - dyn_rng)/db_step));
+ db <= db_step*(int(ref_lvl/db_step));
+ db += db_step
+ ){
+ const int z = iround((db - (ref_lvl - dyn_rng))*(frame.get_plot_h()-1)/dyn_rng);
+ if (z < 0 or size_t(z) >= frame.get_plot_h()) continue;
+ std::stringstream ss; ss << db; std::string lbl = ss.str();
+ for (size_t i = 0; i < lbl.size() and i < frame.get_albl_w(); i++){
+ frame.get_albl(i, z) = lbl[i];
+ }
+ }
+
+ //create vertical units label
+ std::string ulbl = "dBfs";
+ for (size_t i = 0; i < ulbl.size(); i++){
+ frame.get_ulbl(i+1) = ulbl[i];
+ }
+
+ //create horizontal frequency labels
+ const double f_step = to_clean_num(samp_rate/frame.get_plot_w()*flbl_skip);
+ for (
+ double freq = f_step*int((-samp_rate/2/f_step));
+ freq <= f_step*int((+samp_rate/2/f_step));
+ freq += f_step
+ ){
+ const int b = iround((freq + samp_rate/2)*(frame.get_plot_w()-1)/samp_rate);
+ std::stringstream ss; ss << (freq+dc_freq)/1e6 << "MHz"; std::string lbl = ss.str();
+ if (b < int(lbl.size()/2) or b + lbl.size() - lbl.size()/2 >= frame.get_plot_w()) continue;
+ for (size_t i = 0; i < lbl.size(); i++){
+ frame.get_flbl(b + i - lbl.size()/2) = lbl[i];
+ }
+ }
+
+ return frame.to_string();
+ }
+} //namespace ascii_dft
+
+#endif /*ASCII_ART_DFT_HPP*/
+
+/*
+
+//example main function to test the dft
+
+#include <iostream>
+#include <cstdlib>
+#include <curses.h>
+
+int main(void){
+ initscr();
+
+ while (true){
+ clear();
+
+ std::vector<std::complex<float> > samples;
+ for(size_t i = 0; i < 512; i++){
+ samples.push_back(std::complex<float>(
+ float(std::rand() - RAND_MAX/2)/(RAND_MAX)/4,
+ float(std::rand() - RAND_MAX/2)/(RAND_MAX)/4
+ ));
+ samples[i] += 0.5*std::sin(i*3.14/2) + 0.7;
+ }
+
+ acsii_art_dft::log_pwr_dft_type dft;
+ dft = acsii_art_dft::log_pwr_dft(&samples.front(), samples.size());
+
+ printw("%s", acsii_art_dft::dft_to_plot(
+ dft, COLS, LINES,
+ 12.5e4, 2.45e9,
+ 60, 0
+ ).c_str());
+
+ sleep(1);
+ }
+
+
+ endwin();
+ std::cout << "here\n";
+ return 0;
+}
+
+*/
+
diff --git a/host/examples/benchmark_rate.cpp b/host/examples/benchmark_rate.cpp
new file mode 100644
index 000000000..8f00e25de
--- /dev/null
+++ b/host/examples/benchmark_rate.cpp
@@ -0,0 +1,243 @@
+//
+// 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/thread.hpp>
+#include <boost/math/special_functions/round.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+/***********************************************************************
+ * Test result variables
+ **********************************************************************/
+unsigned long long num_overflows = 0;
+unsigned long long num_underflows = 0;
+unsigned long long num_rx_samps = 0;
+unsigned long long num_tx_samps = 0;
+unsigned long long num_dropped_samps = 0;
+unsigned long long num_seq_errors = 0;
+
+/***********************************************************************
+ * Benchmark RX Rate
+ **********************************************************************/
+void benchmark_rx_rate(uhd::usrp::multi_usrp::sptr usrp, const std::string &rx_otw){
+ uhd::set_thread_priority_safe();
+
+ //create a receive streamer
+ uhd::stream_args_t stream_args("fc32", rx_otw); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+ //print pre-test summary
+ std::cout << boost::format(
+ "Testing receive rate %f Msps"
+ ) % (usrp->get_rx_rate()/1e6) << std::endl;
+
+ //setup variables and allocate buffer
+ uhd::rx_metadata_t md;
+ const size_t max_samps_per_packet = rx_stream->get_max_num_samps();
+ std::vector<std::complex<float> > buff(max_samps_per_packet);
+ bool had_an_overflow = false;
+ uhd::time_spec_t last_time;
+ const double rate = usrp->get_rx_rate();
+
+ usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
+ while (not boost::this_thread::interruption_requested()){
+ num_rx_samps += rx_stream->recv(
+ &buff.front(), buff.size(), md
+ );
+
+ //handle the error codes
+ switch(md.error_code){
+ case uhd::rx_metadata_t::ERROR_CODE_NONE:
+ if (had_an_overflow){
+ had_an_overflow = false;
+ num_dropped_samps += boost::math::iround((md.time_spec - last_time).get_real_secs()*rate);
+ }
+ break;
+
+ case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW:
+ had_an_overflow = true;
+ last_time = md.time_spec;
+ num_overflows++;
+ break;
+
+ default:
+ std::cerr << "Error code: " << md.error_code << std::endl;
+ std::cerr << "Unexpected error on recv, continuing..." << std::endl;
+ break;
+ }
+
+ }
+ usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
+}
+
+/***********************************************************************
+ * Benchmark TX Rate
+ **********************************************************************/
+void benchmark_tx_rate(uhd::usrp::multi_usrp::sptr usrp, const std::string &tx_otw){
+ uhd::set_thread_priority_safe();
+
+ //create a transmit streamer
+ uhd::stream_args_t stream_args("fc32", tx_otw); //complex floats
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //print pre-test summary
+ std::cout << boost::format(
+ "Testing transmit rate %f Msps"
+ ) % (usrp->get_tx_rate()/1e6) << std::endl;
+
+ //setup variables and allocate buffer
+ uhd::tx_metadata_t md;
+ md.has_time_spec = false;
+ const size_t max_samps_per_packet = tx_stream->get_max_num_samps();
+ std::vector<std::complex<float> > buff(max_samps_per_packet);
+
+ while (not boost::this_thread::interruption_requested()){
+ num_tx_samps += tx_stream->send(&buff.front(), buff.size(), md);
+ }
+
+ //send a mini EOB packet
+ md.end_of_burst = true;
+ tx_stream->send("", 0, md);
+}
+
+void benchmark_tx_rate_async_helper(uhd::usrp::multi_usrp::sptr usrp){
+ //setup variables and allocate buffer
+ uhd::async_metadata_t async_md;
+
+ while (not boost::this_thread::interruption_requested()){
+
+ if (not usrp->get_device()->recv_async_msg(async_md)) continue;
+
+ //handle the error codes
+ switch(async_md.event_code){
+ case uhd::async_metadata_t::EVENT_CODE_BURST_ACK:
+ return;
+
+ case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW:
+ case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW_IN_PACKET:
+ num_underflows++;
+ break;
+
+ case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR:
+ case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR_IN_BURST:
+ num_seq_errors++;
+ break;
+
+ default:
+ std::cerr << "Event code: " << async_md.event_code << std::endl;
+ std::cerr << "Unexpected event on async recv, continuing..." << std::endl;
+ break;
+ }
+ }
+}
+
+/***********************************************************************
+ * Main code + dispatcher
+ **********************************************************************/
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ double duration;
+ double rx_rate, tx_rate;
+ std::string rx_otw, tx_otw;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("duration", po::value<double>(&duration)->default_value(10.0), "duration for the test in seconds")
+ ("rx_rate", po::value<double>(&rx_rate), "specify to perform a RX rate test (sps)")
+ ("tx_rate", po::value<double>(&tx_rate), "specify to perform a TX rate test (sps)")
+ ("rx_otw", po::value<std::string>(&rx_otw)->default_value("sc16"), "specify the over-the-wire sample mode for RX")
+ ("tx_otw", po::value<std::string>(&tx_otw)->default_value("sc16"), "specify the over-the-wire sample mode for TX")
+ ;
+ 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") or (vm.count("rx_rate") + vm.count("tx_rate")) == 0){
+ std::cout << boost::format("UHD Benchmark Rate %s") % desc << std::endl;
+ std::cout <<
+ " Specify --rx_rate for a receive-only test.\n"
+ " Specify --tx_rate for a transmit-only test.\n"
+ " Specify both options for a full-duplex test.\n"
+ << std::endl;
+ return ~0;
+ }
+
+ //create a usrp device
+ std::cout << std::endl;
+ uhd::device_addrs_t device_addrs = uhd::device::find(args);
+ if (not device_addrs.empty() and device_addrs.at(0).get("type", "") == "usrp1"){
+ std::cerr << "*** Warning! ***" << std::endl;
+ std::cerr << "Benchmark results will be inaccurate on USRP1 due to insufficient features.\n" << 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;
+
+ boost::thread_group thread_group;
+
+ //spawn the receive test thread
+ if (vm.count("rx_rate")){
+ usrp->set_rx_rate(rx_rate);
+ thread_group.create_thread(boost::bind(&benchmark_rx_rate, usrp, rx_otw));
+ }
+
+ //spawn the transmit test thread
+ if (vm.count("tx_rate")){
+ usrp->set_tx_rate(tx_rate);
+ thread_group.create_thread(boost::bind(&benchmark_tx_rate, usrp, tx_otw));
+ thread_group.create_thread(boost::bind(&benchmark_tx_rate_async_helper, usrp));
+ }
+
+ //sleep for the required duration
+ const long secs = long(duration);
+ const long usecs = long((duration - secs)*1e6);
+ boost::this_thread::sleep(boost::posix_time::seconds(secs) + boost::posix_time::microseconds(usecs));
+
+ //interrupt and join the threads
+ thread_group.interrupt_all();
+ thread_group.join_all();
+
+ //print summary
+ std::cout << std::endl << boost::format(
+ "Benchmark rate summary:\n"
+ " Num received samples: %u\n"
+ " Num dropped samples: %u\n"
+ " Num overflows detected: %u\n"
+ " Num transmitted samples: %u\n"
+ " Num sequence errors: %u\n"
+ " Num underflows detected: %u\n"
+ ) % num_rx_samps % num_dropped_samps % num_overflows % num_tx_samps % num_seq_errors % num_underflows << std::endl;
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/latency_test.cpp b/host/examples/latency_test.cpp
new file mode 100644
index 000000000..518d2383a
--- /dev/null
+++ b/host/examples/latency_test.cpp
@@ -0,0 +1,168 @@
+//
+// 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 <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ size_t nsamps;
+ double rate;
+ double rtt;
+ size_t nruns;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("nsamps", po::value<size_t>(&nsamps)->default_value(100), "number of samples per run")
+ ("nruns", po::value<size_t>(&nruns)->default_value(1000), "number of tests to perform")
+ ("rtt", po::value<double>(&rtt)->default_value(0.001), "delay between receive and transmit (seconds)")
+ ("rate", po::value<double>(&rate)->default_value(100e6/4), "sample rate for receive and transmit (sps)")
+ ("verbose", "specify to enable inner-loop verbose")
+ ;
+ 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 - Latency Test %s") % desc << std::endl;
+ std::cout <<
+ " Latency test receives a packet at time t,\n"
+ " and tries to send a packet at time t + rtt,\n"
+ " where rtt is the round trip time sample time\n"
+ " from device to host and back to the device.\n"
+ << std::endl;
+ return ~0;
+ }
+
+ bool verbose = vm.count("verbose") != 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;
+
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+
+ //set the tx sample rate
+ usrp->set_tx_rate(rate);
+ std::cout << boost::format("Actual TX Rate: %f Msps...") % (usrp->get_tx_rate()/1e6) << std::endl;
+
+ //set the rx sample rate
+ usrp->set_rx_rate(rate);
+ std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_rx_rate()/1e6) << std::endl;
+
+ //allocate a buffer to use
+ std::vector<std::complex<float> > buffer(nsamps);
+
+ //create RX and TX streamers
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //initialize result counts
+ int time_error = 0;
+ int ack = 0;
+ int underflow = 0;
+ int other = 0;
+
+ for(size_t nrun = 0; nrun < nruns; nrun++){
+
+ /***************************************************************
+ * Issue a stream command some time in the near future
+ **************************************************************/
+ uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+ stream_cmd.num_samps = buffer.size();
+ stream_cmd.stream_now = false;
+ stream_cmd.time_spec = usrp->get_time_now() + uhd::time_spec_t(0.01);
+ usrp->issue_stream_cmd(stream_cmd);
+
+ /***************************************************************
+ * Receive the requested packet
+ **************************************************************/
+ uhd::rx_metadata_t rx_md;
+ size_t num_rx_samps = rx_stream->recv(
+ &buffer.front(), buffer.size(), rx_md
+ );
+
+ if(verbose) std::cout << boost::format("Got packet: %u samples, %u full secs, %f frac secs")
+ % num_rx_samps % rx_md.time_spec.get_full_secs() % rx_md.time_spec.get_frac_secs() << std::endl;
+
+ /***************************************************************
+ * Transmit a packet with delta time after received packet
+ **************************************************************/
+ uhd::tx_metadata_t tx_md;
+ tx_md.start_of_burst = true;
+ tx_md.end_of_burst = true;
+ tx_md.has_time_spec = true;
+ tx_md.time_spec = rx_md.time_spec + uhd::time_spec_t(rtt);
+ size_t num_tx_samps = tx_stream->send(
+ &buffer.front(), buffer.size(), tx_md
+ );
+ if(verbose) std::cout << boost::format("Sent %d samples") % num_tx_samps << std::endl;
+
+ /***************************************************************
+ * Check the async messages for result
+ **************************************************************/
+ uhd::async_metadata_t async_md;
+ if (not usrp->get_device()->recv_async_msg(async_md)){
+ std::cout << boost::format("failed:\n Async message recv timed out.\n") << std::endl;
+ continue;
+ }
+ switch(async_md.event_code){
+ case uhd::async_metadata_t::EVENT_CODE_TIME_ERROR:
+ time_error++;
+ break;
+
+ case uhd::async_metadata_t::EVENT_CODE_BURST_ACK:
+ ack++;
+ break;
+
+ case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW:
+ underflow++;
+ break;
+
+ default:
+ std::cerr << boost::format(
+ "failed:\n Got unexpected event code 0x%x.\n"
+ ) % async_md.event_code << std::endl;
+ other++;
+ break;
+ }
+ }
+
+ /***************************************************************
+ * Print the summary
+ **************************************************************/
+ std::cout << boost::format("\nACK %d, UNDERFLOW %d, TIME_ERR %d, other %d")
+ % ack % underflow % time_error % other << std::endl;
+ return 0;
+}
diff --git a/host/examples/network_relay.cpp b/host/examples/network_relay.cpp
new file mode 100644
index 000000000..a7fdb7e2e
--- /dev/null
+++ b/host/examples/network_relay.cpp
@@ -0,0 +1,227 @@
+//
+// 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 <boost/program_options.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/format.hpp>
+#include <boost/asio.hpp>
+#include <iostream>
+#include <csignal>
+#include <vector>
+
+namespace po = boost::program_options;
+namespace asio = boost::asio;
+
+typedef boost::shared_ptr<asio::ip::udp::socket> socket_type;
+
+static const size_t insane_mtu = 9000;
+
+boost::mutex spawn_mutex;
+
+#if defined(UHD_PLATFORM_MACOS) || defined(UHD_PLATFORM_BSD)
+ //limit buffer resize on macos or it will error
+ const size_t rx_dsp_buff_size = size_t(1e6);
+#elif defined(UHD_PLATFORM_LINUX) || defined(UHD_PLATFORM_WIN32)
+ //set to half-a-second of buffering at max rate
+ const size_t rx_dsp_buff_size = size_t(50e6);
+#endif
+
+const size_t tx_dsp_buff_size = (1 << 20);
+
+/***********************************************************************
+ * Signal handlers
+ **********************************************************************/
+static bool stop_signal_called = false;
+void sig_int_handler(int){stop_signal_called = true;}
+
+static bool wait_for_recv_ready(int sock_fd){
+ //setup timeval for timeout
+ timeval tv;
+ tv.tv_sec = 0;
+ tv.tv_usec = 100000; //100ms
+
+ //setup rset for timeout
+ fd_set rset;
+ FD_ZERO(&rset);
+ FD_SET(sock_fd, &rset);
+
+ //call select with timeout on receive socket
+ return ::select(sock_fd+1, &rset, NULL, NULL, &tv) > 0;
+}
+
+/***********************************************************************
+ * Relay class
+ **********************************************************************/
+class udp_relay_type{
+public:
+ udp_relay_type(
+ const std::string &server_addr,
+ const std::string &client_addr,
+ const std::string &port,
+ const size_t server_rx_size = 0,
+ const size_t server_tx_size = 0,
+ const size_t client_rx_size = 0,
+ const size_t client_tx_size = 0
+ ):_port(port){
+ {
+ asio::ip::udp::resolver resolver(_io_service);
+ asio::ip::udp::resolver::query query(asio::ip::udp::v4(), server_addr, port);
+ asio::ip::udp::endpoint endpoint = *resolver.resolve(query);
+
+ _server_socket = boost::shared_ptr<asio::ip::udp::socket>(new asio::ip::udp::socket(_io_service, endpoint));
+ resize_buffs(_server_socket, server_rx_size, server_tx_size);
+ }
+ {
+ asio::ip::udp::resolver resolver(_io_service);
+ asio::ip::udp::resolver::query query(asio::ip::udp::v4(), client_addr, port);
+ asio::ip::udp::endpoint endpoint = *resolver.resolve(query);
+
+ _client_socket = boost::shared_ptr<asio::ip::udp::socket>(new asio::ip::udp::socket(_io_service));
+ _client_socket->open(asio::ip::udp::v4());
+ _client_socket->connect(endpoint);
+ resize_buffs(_client_socket, client_rx_size, client_tx_size);
+ }
+
+ std::cout << "spawning relay threads... " << _port << std::endl;
+ _thread_group.create_thread(boost::bind(&udp_relay_type::server_thread, this));
+ spawn_mutex.lock();
+ spawn_mutex.lock();
+ spawn_mutex.unlock();
+ _thread_group.create_thread(boost::bind(&udp_relay_type::client_thread, this));
+ spawn_mutex.lock();
+ spawn_mutex.lock();
+ spawn_mutex.unlock();
+ std::cout << " done!" << std::endl << std::endl;
+ }
+
+ ~udp_relay_type(void){
+ std::cout << "killing relay threads... " << _port << std::endl;
+ _thread_group.interrupt_all();
+ _thread_group.join_all();
+ std::cout << " done!" << std::endl << std::endl;
+ }
+
+private:
+
+ static void resize_buffs(socket_type sock, const size_t rx_size, const size_t tx_size){
+ if (rx_size != 0) sock->set_option(asio::socket_base::receive_buffer_size(rx_size));
+ if (tx_size != 0) sock->set_option(asio::socket_base::send_buffer_size(tx_size));
+ }
+
+ void server_thread(void){
+ uhd::set_thread_priority_safe();
+ std::cout << " entering server_thread..." << std::endl;
+ spawn_mutex.unlock();
+ std::vector<char> buff(insane_mtu);
+ while (not boost::this_thread::interruption_requested()){
+ if (wait_for_recv_ready(_server_socket->native())){
+ boost::mutex::scoped_lock lock(_endpoint_mutex);
+ const size_t len = _server_socket->receive_from(asio::buffer(&buff.front(), buff.size()), _endpoint);
+ lock.unlock();
+ _client_socket->send(asio::buffer(&buff.front(), len));
+
+ //perform sequence error detection on tx dsp data (can detect bad network cards)
+ /*
+ if (_port[4] == '7'){
+ static boost::uint32_t next_seq;
+ const boost::uint32_t this_seq = ntohl(reinterpret_cast<const boost::uint32_t *>(&buff.front())[0]);
+ if (next_seq != this_seq and this_seq != 0) std::cout << "S" << std::flush;
+ next_seq = this_seq + 1;
+ }
+ */
+ }
+ }
+ std::cout << " exiting server_thread..." << std::endl;
+ }
+
+ void client_thread(void){
+ uhd::set_thread_priority_safe();
+ std::cout << " entering client_thread..." << std::endl;
+ spawn_mutex.unlock();
+ std::vector<char> buff(insane_mtu);
+ while (not boost::this_thread::interruption_requested()){
+ if (wait_for_recv_ready(_client_socket->native())){
+ const size_t len = _client_socket->receive(asio::buffer(&buff.front(), buff.size()));
+ boost::mutex::scoped_lock lock(_endpoint_mutex);
+ _server_socket->send_to(asio::buffer(&buff.front(), len), _endpoint);
+ }
+ }
+ std::cout << " exiting client_thread..." << std::endl;
+ }
+
+ const std::string _port;
+ boost::thread_group _thread_group;
+ asio::io_service _io_service;
+ asio::ip::udp::endpoint _endpoint;
+ boost::mutex _endpoint_mutex;
+ socket_type _server_socket, _client_socket;
+};
+
+
+/***********************************************************************
+ * Main
+ **********************************************************************/
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string addr;
+ std::string bind;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("addr", po::value<std::string>(&addr), "the resolvable address of the usrp (must be specified)")
+ ("bind", po::value<std::string>(&bind)->default_value("0.0.0.0"), "bind the server to this network address (default: any)")
+ ;
+ 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") or not vm.count("addr")){
+ std::cout
+ << boost::format("UHD Network Relay %s") % desc << std::endl
+ << "Runs a network relay between UHD on one computer and a USRP on the network.\n"
+ << "This example is basically for test purposes. Use at your own convenience.\n"
+ << std::endl;
+ return ~0;
+ }
+
+ {
+ boost::shared_ptr<udp_relay_type> ctrl (new udp_relay_type(bind, addr, "49152"));
+ boost::shared_ptr<udp_relay_type> rxdsp0(new udp_relay_type(bind, addr, "49156", 0, tx_dsp_buff_size, rx_dsp_buff_size, 0));
+ boost::shared_ptr<udp_relay_type> txdsp0(new udp_relay_type(bind, addr, "49157", tx_dsp_buff_size, 0, 0, tx_dsp_buff_size));
+ boost::shared_ptr<udp_relay_type> rxdsp1(new udp_relay_type(bind, addr, "49158", 0, tx_dsp_buff_size, rx_dsp_buff_size, 0));
+ boost::shared_ptr<udp_relay_type> gps (new udp_relay_type(bind, addr, "49172"));
+
+ std::signal(SIGINT, &sig_int_handler);
+ std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
+
+ while (not stop_signal_called){
+ boost::this_thread::sleep(boost::posix_time::milliseconds(100));
+ }
+ }
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/rx_ascii_art_dft.cpp b/host/examples/rx_ascii_art_dft.cpp
new file mode 100644
index 000000000..fe8fb0347
--- /dev/null
+++ b/host/examples/rx_ascii_art_dft.cpp
@@ -0,0 +1,198 @@
+//
+// 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 "ascii_art_dft.hpp" //implementation
+#include <boost/program_options.hpp>
+#include <boost/thread/thread.hpp> //gets time
+#include <boost/format.hpp>
+#include <curses.h>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args, ant, subdev, ref;
+ size_t num_bins;
+ double rate, freq, gain, bw, frame_rate;
+ float ref_lvl, dyn_rng;
+
+ //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")
+ // hardware parameters
+ ("rate", po::value<double>(&rate), "rate of incoming samples (sps)")
+ ("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")
+ // display parameters
+ ("num-bins", po::value<size_t>(&num_bins)->default_value(512), "the number of bins in the DFT")
+ ("frame-rate", po::value<double>(&frame_rate)->default_value(5), "frame rate of the display (fps)")
+ ("ref-lvl", po::value<float>(&ref_lvl)->default_value(0), "reference level for the display (dB)")
+ ("dyn-rng", po::value<float>(&dyn_rng)->default_value(60), "dynamic range for the display (dB)")
+ ("ref", po::value<std::string>(&ref)->default_value("internal"), "waveform type (internal, external, mimo)")
+ ;
+ 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") or not vm.count("rate")){
+ std::cout << boost::format("UHD RX ASCII Art DFT %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());
+ }
+
+ //create a receive streamer
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+ //allocate recv buffer and metatdata
+ uhd::rx_metadata_t md;
+ std::vector<std::complex<float> > buff(num_bins);
+ //------------------------------------------------------------------
+ //-- Initialize
+ //------------------------------------------------------------------
+ initscr(); //curses init
+ usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS);
+ boost::system_time next_refresh = boost::get_system_time();
+
+ //------------------------------------------------------------------
+ //-- Main loop
+ //------------------------------------------------------------------
+ while (true){
+ //read a buffer's worth of samples every iteration
+ size_t num_rx_samps = rx_stream->recv(
+ &buff.front(), buff.size(), md
+ );
+ if (num_rx_samps != buff.size()) continue;
+
+ //check and update the display refresh condition
+ if (boost::get_system_time() < next_refresh) continue;
+ next_refresh = boost::get_system_time() + boost::posix_time::microseconds(long(1e6/frame_rate));
+
+ //calculate the dft and create the ascii art frame
+ acsii_art_dft::log_pwr_dft_type lpdft(
+ acsii_art_dft::log_pwr_dft(&buff.front(), num_rx_samps)
+ );
+ std::string frame = acsii_art_dft::dft_to_plot(
+ lpdft, COLS, LINES,
+ usrp->get_rx_rate(),
+ usrp->get_rx_freq(),
+ dyn_rng, ref_lvl
+ );
+
+ //curses screen handling: clear and print frame
+ clear();
+ printw("%s", frame.c_str());
+
+ //curses key handling: no timeout, any key to exit
+ timeout(0);
+ int ch = getch();
+ if (ch != KEY_RESIZE and ch != ERR) break;
+ }
+
+ //------------------------------------------------------------------
+ //-- Cleanup
+ //------------------------------------------------------------------
+ usrp->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS);
+ endwin(); //curses done
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/rx_multi_samples.cpp b/host/examples/rx_multi_samples.cpp
new file mode 100644
index 000000000..42ef33d70
--- /dev/null
+++ b/host/examples/rx_multi_samples.cpp
@@ -0,0 +1,178 @@
+//
+// 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 <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args, sync, subdev;
+ double seconds_in_future;
+ size_t total_num_samps;
+ double rate;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("secs", po::value<double>(&seconds_in_future)->default_value(1.5), "number of seconds in the future to receive")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(10000), "total number of samples to receive")
+ ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
+ ("sync", po::value<std::string>(&sync)->default_value("now"), "synchronization method: now, pps, mimo")
+ ("subdev", po::value<std::string>(&subdev), "subdev spec (homogeneous across motherboards)")
+ ("dilv", "specify to disable inner-loop verbose")
+ ;
+ 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 Multi Samples %s") % desc << std::endl;
+ std::cout <<
+ " This is a demonstration of how to receive aligned data from multiple channels.\n"
+ " This example can receive from multiple DSPs, multiple motherboards, or both.\n"
+ " The MIMO cable or PPS can be used to synchronize the configuration. See --sync\n"
+ "\n"
+ " Specify --subdev to select multiple channels per motherboard.\n"
+ " Ex: --subdev=\"0:A 0:B\" to get 2 channels on a Basic RX.\n"
+ "\n"
+ " Specify --args to select multiple motherboards in a configuration.\n"
+ " Ex: --args=\"addr0=192.168.10.2, addr1=192.168.10.3\"\n"
+ << std::endl;
+ return ~0;
+ }
+
+ bool verbose = vm.count("dilv") == 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_rx_subdev_spec(subdev); //sets across all mboards
+
+ std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
+
+ //set the rx sample rate (sets across all channels)
+ 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;
+
+ std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+ if (sync == "now"){
+ //This is not a true time lock, the devices will be off by a few RTT.
+ //Rather, this is just to allow for demonstration of the code below.
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+ }
+ else if (sync == "pps"){
+ usrp->set_time_source("external");
+ usrp->set_time_unknown_pps(uhd::time_spec_t(0.0));
+ boost::this_thread::sleep(boost::posix_time::seconds(1)); //wait for pps sync pulse
+ }
+ else if (sync == "mimo"){
+ UHD_ASSERT_THROW(usrp->get_num_mboards() == 2);
+
+ //make mboard 1 a slave over the MIMO Cable
+ usrp->set_clock_source("mimo", 1);
+ usrp->set_time_source("mimo", 1);
+
+ //set time on the master (mboard 0)
+ usrp->set_time_now(uhd::time_spec_t(0.0), 0);
+
+ //sleep a bit while the slave locks its time to the master
+ boost::this_thread::sleep(boost::posix_time::milliseconds(100));
+ }
+
+ //create a receive streamer
+ //linearly map channels (index0 = channel0, index1 = channel1, ...)
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ for (size_t chan = 0; chan < usrp->get_rx_num_channels(); chan++)
+ stream_args.channels.push_back(chan); //linear mapping
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+ //setup streaming
+ std::cout << std::endl;
+ std::cout << boost::format(
+ "Begin streaming %u samples, %f seconds in the future..."
+ ) % total_num_samps % seconds_in_future << std::endl;
+ uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+ stream_cmd.num_samps = total_num_samps;
+ stream_cmd.stream_now = false;
+ stream_cmd.time_spec = uhd::time_spec_t(seconds_in_future);
+ usrp->issue_stream_cmd(stream_cmd); //tells all channels to stream
+
+ //meta-data will be filled in by recv()
+ uhd::rx_metadata_t md;
+
+ //allocate buffers to receive with samples (one buffer per channel)
+ const size_t samps_per_buff = rx_stream->get_max_num_samps();
+ std::vector<std::vector<std::complex<float> > > buffs(
+ usrp->get_rx_num_channels(), std::vector<std::complex<float> >(samps_per_buff)
+ );
+
+ //create a vector of pointers to point to each of the channel buffers
+ std::vector<std::complex<float> *> buff_ptrs;
+ for (size_t i = 0; i < buffs.size(); i++) buff_ptrs.push_back(&buffs[i].front());
+
+ //the first call to recv() will block this many seconds before receiving
+ double timeout = seconds_in_future + 0.1; //timeout (delay before receive + padding)
+
+ size_t num_acc_samps = 0; //number of accumulated samples
+ while(num_acc_samps < total_num_samps){
+ //receive a single packet
+ size_t num_rx_samps = rx_stream->recv(
+ buff_ptrs, samps_per_buff, md, timeout
+ );
+
+ //use a small timeout for subsequent packets
+ timeout = 0.1;
+
+ //handle the error code
+ if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
+ 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));
+ }
+
+ if(verbose) std::cout << boost::format(
+ "Received packet: %u samples, %u full secs, %f frac secs"
+ ) % num_rx_samps % md.time_spec.get_full_secs() % md.time_spec.get_frac_secs() << std::endl;
+
+ num_acc_samps += num_rx_samps;
+ }
+
+ if (num_acc_samps < total_num_samps) std::cerr << "Receive timeout before all samples received..." << std::endl;
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
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;
+}
diff --git a/host/examples/rx_samples_to_udp.cpp b/host/examples/rx_samples_to_udp.cpp
new file mode 100644
index 000000000..42b80762f
--- /dev/null
+++ b/host/examples/rx_samples_to_udp.cpp
@@ -0,0 +1,172 @@
+//
+// 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/transport/udp_simple.hpp>
+#include <uhd/exception.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args, file, ant, subdev, ref;
+ size_t total_num_samps;
+ double rate, freq, gain, bw;
+ std::string addr, port;
+
+ //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")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+ ("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")
+ ("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")
+ ("port", po::value<std::string>(&port)->default_value("7124"), "server udp port")
+ ("addr", po::value<std::string>(&addr)->default_value("192.168.1.10"), "resolvable server address")
+ ("ref", po::value<std::string>(&ref)->default_value("internal"), "waveform type (internal, external, mimo)")
+ ;
+ 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 to UDP %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;
+
+ //Lock mboard clocks
+ usrp->set_clock_source(ref);
+
+ //set the rx sample rate
+ 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;
+ 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 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
+
+ //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());
+ }
+
+ //create a receive streamer
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+ //setup streaming
+ uhd::stream_cmd_t stream_cmd(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);
+
+ //loop until total number of samples reached
+ size_t num_acc_samps = 0; //number of accumulated samples
+ uhd::rx_metadata_t md;
+ std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+ uhd::transport::udp_simple::sptr udp_xport = uhd::transport::udp_simple::make_connected(addr, port);
+
+ while(num_acc_samps < total_num_samps){
+ size_t num_rx_samps = rx_stream->recv(
+ &buff.front(), buff.size(), md
+ );
+
+ //handle the error codes
+ switch(md.error_code){
+ case uhd::rx_metadata_t::ERROR_CODE_NONE:
+ break;
+
+ case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+ if (num_acc_samps == 0) continue;
+ std::cout << boost::format(
+ "Got timeout before all samples received, possible packet loss, exiting loop..."
+ ) << std::endl;
+ goto done_loop;
+
+ default:
+ std::cout << boost::format(
+ "Got error code 0x%x, exiting loop..."
+ ) % md.error_code << std::endl;
+ goto done_loop;
+ }
+
+ //send complex single precision floating point samples over udp
+ udp_xport->send(boost::asio::buffer(buff, num_rx_samps));
+
+ num_acc_samps += num_rx_samps;
+ } done_loop:
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp
new file mode 100644
index 000000000..143bceb03
--- /dev/null
+++ b/host/examples/rx_timed_samples.cpp
@@ -0,0 +1,128 @@
+//
+// 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 <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ double seconds_in_future;
+ size_t total_num_samps;
+ double rate;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("secs", po::value<double>(&seconds_in_future)->default_value(1.5), "number of seconds in the future to receive")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(10000), "total number of samples to receive")
+ ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of incoming samples")
+ ("dilv", "specify to disable inner-loop verbose")
+ ;
+ 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 Timed Samples %s") % desc << std::endl;
+ return ~0;
+ }
+
+ bool verbose = vm.count("dilv") == 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_rx_rate(rate);
+ std::cout << boost::format("Actual RX Rate: %f Msps...") % (usrp->get_rx_rate()/1e6) << std::endl << std::endl;
+
+ std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+
+ //create a receive streamer
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+
+ //setup streaming
+ std::cout << std::endl;
+ std::cout << boost::format(
+ "Begin streaming %u samples, %f seconds in the future..."
+ ) % total_num_samps % seconds_in_future << std::endl;
+ uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+ stream_cmd.num_samps = total_num_samps;
+ stream_cmd.stream_now = false;
+ stream_cmd.time_spec = uhd::time_spec_t(seconds_in_future);
+ usrp->issue_stream_cmd(stream_cmd);
+
+ //meta-data will be filled in by recv()
+ uhd::rx_metadata_t md;
+
+ //allocate buffer to receive with samples
+ std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+
+ //the first call to recv() will block this many seconds before receiving
+ double timeout = seconds_in_future + 0.1; //timeout (delay before receive + padding)
+
+ size_t num_acc_samps = 0; //number of accumulated samples
+ while(num_acc_samps < total_num_samps){
+ //receive a single packet
+ size_t num_rx_samps = rx_stream->recv(
+ &buff.front(), buff.size(), md, timeout, true
+ );
+
+ //use a small timeout for subsequent packets
+ timeout = 0.1;
+
+ //handle the error code
+ if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) break;
+ 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));
+ }
+
+ if(verbose) std::cout << boost::format(
+ "Received packet: %u samples, %u full secs, %f frac secs"
+ ) % num_rx_samps % md.time_spec.get_full_secs() % md.time_spec.get_frac_secs() << std::endl;
+
+ num_acc_samps += num_rx_samps;
+ }
+
+ if (num_acc_samps < total_num_samps) std::cerr << "Receive timeout before all samples received..." << std::endl;
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/test_messages.cpp b/host/examples/test_messages.cpp
new file mode 100644
index 000000000..afb092092
--- /dev/null
+++ b/host/examples/test_messages.cpp
@@ -0,0 +1,354 @@
+//
+// 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/utils/static.hpp>
+#include <uhd/types/stream_cmd.hpp>
+#include <uhd/usrp/multi_usrp.hpp>
+#include <boost/assign/list_of.hpp>
+#include <boost/program_options.hpp>
+#include <boost/foreach.hpp>
+#include <boost/bind.hpp>
+#include <boost/format.hpp>
+#include <cstdlib>
+#include <ctime>
+#include <complex>
+#include <iostream>
+
+namespace po = boost::program_options;
+
+/*!
+ * Test the late command message:
+ * Issue a stream command with a time that is in the past.
+ * We expect to get an inline late command message.
+ */
+bool test_late_command_message(uhd::usrp::multi_usrp::sptr usrp, uhd::rx_streamer::sptr rx_stream, uhd::tx_streamer::sptr){
+ std::cout << "Test late command message... " << std::flush;
+
+ usrp->set_time_now(uhd::time_spec_t(200.0)); //set time
+
+ uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
+ stream_cmd.num_samps = rx_stream->get_max_num_samps();
+ stream_cmd.stream_now = false;
+ stream_cmd.time_spec = uhd::time_spec_t(100.0); //time in the past
+ usrp->issue_stream_cmd(stream_cmd);
+
+ std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+ uhd::rx_metadata_t md;
+
+ const size_t nsamps = rx_stream->recv(
+ &buff.front(), buff.size(), md
+ );
+
+ switch(md.error_code){
+ case uhd::rx_metadata_t::ERROR_CODE_LATE_COMMAND:
+ std::cout << boost::format(
+ "success:\n"
+ " Got error code late command message.\n"
+ ) << std::endl;
+ return true;
+
+ case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+ std::cout << boost::format(
+ "failed:\n"
+ " Inline message recv timed out.\n"
+ ) << std::endl;
+ return false;
+
+ default:
+ std::cout << boost::format(
+ "failed:\n"
+ " Got unexpected error code 0x%x, nsamps %u.\n"
+ ) % md.error_code % nsamps << std::endl;
+ return false;
+ }
+}
+
+/*!
+ * Test the broken chain message:
+ * Issue a stream command with num samps and more.
+ * We expect to get an inline broken chain message.
+ */
+bool test_broken_chain_message(uhd::usrp::multi_usrp::sptr usrp, uhd::rx_streamer::sptr rx_stream, uhd::tx_streamer::sptr){
+ std::cout << "Test broken chain message... " << std::flush;
+
+ uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_MORE);
+ stream_cmd.stream_now = true;
+ stream_cmd.num_samps = rx_stream->get_max_num_samps();
+ usrp->issue_stream_cmd(stream_cmd);
+
+ std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+ uhd::rx_metadata_t md;
+
+ rx_stream->recv( //once for the requested samples
+ &buff.front(), buff.size(), md
+ );
+
+ rx_stream->recv( //again for the inline message
+ &buff.front(), buff.size(), md
+ );
+
+ switch(md.error_code){
+ case uhd::rx_metadata_t::ERROR_CODE_BROKEN_CHAIN:
+ std::cout << boost::format(
+ "success:\n"
+ " Got error code broken chain message.\n"
+ ) << std::endl;
+ return true;
+
+ case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT:
+ std::cout << boost::format(
+ "failed:\n"
+ " Inline message recv timed out.\n"
+ ) << std::endl;
+ return false;
+
+ default:
+ std::cout << boost::format(
+ "failed:\n"
+ " Got unexpected error code 0x%x.\n"
+ ) % md.error_code << std::endl;
+ return false;
+ }
+}
+
+/*!
+ * Test the burst ack message:
+ * Send a burst of many samples that will fragment internally.
+ * We expect to get an burst ack async message.
+ */
+bool test_burst_ack_message(uhd::usrp::multi_usrp::sptr usrp, uhd::rx_streamer::sptr, uhd::tx_streamer::sptr tx_stream){
+ std::cout << "Test burst ack message... " << std::flush;
+
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true;
+ md.end_of_burst = true;
+ md.has_time_spec = false;
+
+ //3 times max-sps guarantees a SOB, no burst, and EOB packet
+ std::vector<std::complex<float> > buff(tx_stream->get_max_num_samps()*3);
+
+ tx_stream->send(
+ &buff.front(), buff.size(), md
+ );
+
+ uhd::async_metadata_t async_md;
+ if (not usrp->get_device()->recv_async_msg(async_md)){
+ std::cout << boost::format(
+ "failed:\n"
+ " Async message recv timed out.\n"
+ ) << std::endl;
+ return false;
+ }
+
+ switch(async_md.event_code){
+ case uhd::async_metadata_t::EVENT_CODE_BURST_ACK:
+ std::cout << boost::format(
+ "success:\n"
+ " Got event code burst ack message.\n"
+ ) << std::endl;
+ return true;
+
+ default:
+ std::cout << boost::format(
+ "failed:\n"
+ " Got unexpected event code 0x%x.\n"
+ ) % async_md.event_code << std::endl;
+ return false;
+ }
+}
+
+/*!
+ * Test the underflow message:
+ * Send a start of burst packet with no following end of burst.
+ * We expect to get an underflow(within a burst) async message.
+ */
+bool test_underflow_message(uhd::usrp::multi_usrp::sptr usrp, uhd::rx_streamer::sptr, uhd::tx_streamer::sptr tx_stream){
+ std::cout << "Test underflow message... " << std::flush;
+
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true;
+ md.end_of_burst = false;
+ md.has_time_spec = false;
+
+ tx_stream->send("", 0, md);
+
+ uhd::async_metadata_t async_md;
+ if (not usrp->get_device()->recv_async_msg(async_md, 1)){
+ std::cout << boost::format(
+ "failed:\n"
+ " Async message recv timed out.\n"
+ ) << std::endl;
+ return false;
+ }
+
+ switch(async_md.event_code){
+ case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW:
+ std::cout << boost::format(
+ "success:\n"
+ " Got event code underflow message.\n"
+ ) << std::endl;
+ return true;
+
+ default:
+ std::cout << boost::format(
+ "failed:\n"
+ " Got unexpected event code 0x%x.\n"
+ ) % async_md.event_code << std::endl;
+ return false;
+ }
+}
+
+/*!
+ * Test the time error message:
+ * Send a burst packet that occurs at a time in the past.
+ * We expect to get a time error async message.
+ */
+bool test_time_error_message(uhd::usrp::multi_usrp::sptr usrp, uhd::rx_streamer::sptr, uhd::tx_streamer::sptr tx_stream){
+ std::cout << "Test time error message... " << std::flush;
+
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true;
+ md.end_of_burst = true;
+ md.has_time_spec = true;
+ md.time_spec = uhd::time_spec_t(100.0); //send at 100s
+
+ usrp->set_time_now(uhd::time_spec_t(200.0)); //time at 200s
+
+ tx_stream->send("", 0, md);
+
+ uhd::async_metadata_t async_md;
+ if (not usrp->get_device()->recv_async_msg(async_md)){
+ std::cout << boost::format(
+ "failed:\n"
+ " Async message recv timed out.\n"
+ ) << std::endl;
+ return false;
+ }
+
+ switch(async_md.event_code){
+ case uhd::async_metadata_t::EVENT_CODE_TIME_ERROR:
+ std::cout << boost::format(
+ "success:\n"
+ " Got event code time error message.\n"
+ ) << std::endl;
+ return true;
+
+ default:
+ std::cout << boost::format(
+ "failed:\n"
+ " Got unexpected event code 0x%x.\n"
+ ) % async_md.event_code << std::endl;
+ return false;
+ }
+}
+
+void flush_async(uhd::usrp::multi_usrp::sptr usrp){
+ uhd::async_metadata_t async_md;
+ while (usrp->get_device()->recv_async_msg(async_md)){}
+}
+
+void flush_recv(uhd::rx_streamer::sptr rx_stream){
+ std::vector<std::complex<float> > buff(rx_stream->get_max_num_samps());
+ uhd::rx_metadata_t md;
+
+ do{
+ rx_stream->recv(&buff.front(), buff.size(), md);
+ } while (md.error_code != uhd::rx_metadata_t::ERROR_CODE_TIMEOUT);
+}
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ size_t ntests;
+
+ //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")
+ ("ntests", po::value<size_t>(&ntests)->default_value(50), "number of tests to run")
+ ;
+ 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 Test Messages %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;
+
+ //create RX and TX streamers
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //------------------------------------------------------------------
+ // begin messages test
+ //------------------------------------------------------------------
+ static const uhd::dict<std::string, boost::function<bool(uhd::usrp::multi_usrp::sptr, uhd::rx_streamer::sptr, uhd::tx_streamer::sptr)> >
+ tests = boost::assign::map_list_of
+ ("Test Burst ACK ", &test_burst_ack_message)
+ ("Test Underflow ", &test_underflow_message)
+ ("Test Time Error", &test_time_error_message)
+ ("Test Late Command", &test_late_command_message)
+ ("Test Broken Chain", &test_broken_chain_message)
+ ;
+
+ //init result counts
+ uhd::dict<std::string, size_t> failures, successes;
+ BOOST_FOREACH(const std::string &key, tests.keys()){
+ failures[key] = 0;
+ successes[key] = 0;
+ }
+
+ //run the tests, pick at random
+ std::srand((unsigned int) time(NULL));
+ for (size_t n = 0; n < ntests; n++){
+ std::string key = tests.keys()[std::rand() % tests.size()];
+ bool pass = tests[key](usrp, rx_stream, tx_stream);
+ flush_async(usrp);
+ flush_recv(rx_stream);
+
+ //store result
+ if (pass) successes[key]++;
+ else failures[key]++;
+ }
+
+ //print the result summary
+ std::cout << std::endl << "Summary:" << std::endl << std::endl;
+ BOOST_FOREACH(const std::string &key, tests.keys()){
+ std::cout << boost::format(
+ "%s -> %3u successes, %3u failures"
+ ) % key % successes[key] % failures[key] << std::endl;
+ }
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/test_pps_input.cpp b/host/examples/test_pps_input.cpp
new file mode 100644
index 000000000..994b7ca87
--- /dev/null
+++ b/host/examples/test_pps_input.cpp
@@ -0,0 +1,62 @@
+//
+// 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 <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <boost/thread.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ;
+ 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 Test PPS Input %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 time at an unknown pps (will throw if no pps)
+ std::cout << std::endl << "Attempt to detect the PPS and set the time..." << std::endl << std::endl;
+ usrp->set_time_unknown_pps(uhd::time_spec_t(0.0));
+ std::cout << std::endl << "Success!" << std::endl << std::endl;
+ return 0;
+}
diff --git a/host/examples/tx_bursts.cpp b/host/examples/tx_bursts.cpp
new file mode 100644
index 000000000..f5ae18a9f
--- /dev/null
+++ b/host/examples/tx_bursts.cpp
@@ -0,0 +1,164 @@
+//
+// 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 <boost/program_options.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/format.hpp>
+#include <csignal>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+static bool stop_signal_called = false;
+void sig_int_handler(int){stop_signal_called = true;}
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ double seconds_in_future;
+ size_t total_num_samps;
+ double rate;
+ float ampl;
+ double freq;
+ double rep_rate;
+ double 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")
+ ("secs", po::value<double>(&seconds_in_future)->default_value(1.5), "delay before first burst")
+ ("repeat", "repeat burst")
+ ("rep-delay", po::value<double>(&rep_rate)->default_value(0.5), "delay between bursts")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(10000), "total number of samples to transmit")
+ ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of outgoing samples")
+ ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
+ ("freq", po::value<double>(&freq)->default_value(0), "center frequency")
+ ("gain", po::value<double>(&gain)->default_value(0), "gain")
+ ("dilv", "specify to disable inner-loop verbose")
+ ;
+ 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 Timed Samples %s") % desc << std::endl;
+ return ~0;
+ }
+
+ bool verbose = vm.count("dilv") == 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);
+ std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
+
+ //set the tx sample rate
+ 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;
+
+ std::cout << boost::format("Setting TX Freq: %f MHz...") % (freq/1e6) << std::endl;
+ for(size_t i=0; i < usrp->get_tx_num_channels(); i++) usrp->set_tx_freq(freq, i);
+ std::cout << boost::format("Actual TX Freq: %f MHz...") % (usrp->get_tx_freq()/1e6) << std::endl << std::endl;
+
+ std::cout << boost::format("Setting TX Gain: %f...") % (gain) << std::endl;
+ for(size_t i=0; i < usrp->get_tx_num_channels(); i++) usrp->set_tx_gain(gain, i);
+ std::cout << boost::format("Actual TX Gain: %f...") % (usrp->get_tx_gain()) << std::endl << std::endl;
+
+ std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+
+ //create a transmit streamer
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //allocate buffer with data to send
+ const size_t spb = tx_stream->get_max_num_samps();
+
+ std::vector<std::complex<float> *> buffs;
+ for(size_t i=0; i < usrp->get_num_mboards(); i++) {
+ buffs.push_back(new std::complex<float>[spb]);
+ for(size_t n=0; n < spb; n++)
+ buffs.back()[n] = std::complex<float>(ampl, ampl);
+ };
+
+ std::signal(SIGINT, &sig_int_handler);
+ if(repeat) std::cout << "Press Ctrl + C to quit..." << std::endl;
+
+ double time_to_send = seconds_in_future;
+
+ do {
+ //setup metadata for the first packet
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true;
+ md.end_of_burst = false;
+ md.has_time_spec = true;
+ md.time_spec = uhd::time_spec_t(time_to_send);
+
+ //the first call to send() will block this many seconds before sending:
+ double timeout = std::max(rep_rate, seconds_in_future) + 0.1; //timeout (delay before transmit + padding)
+
+ size_t num_acc_samps = 0; //number of accumulated samples
+ while(num_acc_samps < total_num_samps){
+ size_t samps_to_send = std::min(total_num_samps - num_acc_samps, spb);
+
+ //ensure the the last packet has EOB set
+ md.end_of_burst = samps_to_send < spb;
+
+ //send a single packet
+ size_t num_tx_samps = tx_stream->send(
+ buffs, samps_to_send, md, timeout
+ );
+
+ //do not use time spec for subsequent packets
+ md.has_time_spec = false;
+ md.start_of_burst = false;
+
+ if (num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
+ if(verbose) std::cout << boost::format("Sent packet: %u samples") % num_tx_samps << std::endl;
+
+ num_acc_samps += num_tx_samps;
+ }
+
+ time_to_send += rep_rate;
+
+ std::cout << std::endl << "Waiting for async burst ACK... " << std::flush;
+ uhd::async_metadata_t async_md;
+ bool got_async_burst_ack = false;
+ //loop through all messages for the ACK packet (may have underflow messages in queue)
+ while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, seconds_in_future)){
+ got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
+ }
+ std::cout << (got_async_burst_ack? "success" : "fail") << std::endl;
+ } while (not stop_signal_called and repeat);
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/tx_samples_from_file.cpp b/host/examples/tx_samples_from_file.cpp
new file mode 100644
index 000000000..ea4add403
--- /dev/null
+++ b/host/examples/tx_samples_from_file.cpp
@@ -0,0 +1,174 @@
+//
+// 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 std::string &cpu_format,
+ const std::string &file,
+ size_t samps_per_buff
+){
+ //create a transmit streamer
+ uhd::stream_args_t stream_args(cpu_format);
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ 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();
+
+ 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;
+ 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("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")
+ ("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)")
+ ;
+ 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);
+
+ //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;
+ 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
+
+ //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());
+ }
+
+ //send from file
+ if (type == "double") send_from_file<std::complex<double> >(usrp, "fc64", file, spb);
+ else if (type == "float") send_from_file<std::complex<float> >(usrp, "fc32", file, spb);
+ else if (type == "short") send_from_file<std::complex<short> >(usrp, "sc16", file, spb);
+ else throw std::runtime_error("Unknown type " + type);
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp
new file mode 100644
index 000000000..3b8cc75d4
--- /dev/null
+++ b/host/examples/tx_timed_samples.cpp
@@ -0,0 +1,128 @@
+//
+// 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 <boost/program_options.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <complex>
+
+namespace po = boost::program_options;
+
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args;
+ double seconds_in_future;
+ size_t total_num_samps;
+ double rate;
+ float ampl;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("secs", po::value<double>(&seconds_in_future)->default_value(1.5), "number of seconds in the future to transmit")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(10000), "total number of samples to transmit")
+ ("rate", po::value<double>(&rate)->default_value(100e6/16), "rate of outgoing samples")
+ ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of each sample")
+ ("dilv", "specify to disable inner-loop verbose")
+ ;
+ 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 Timed Samples %s") % desc << std::endl;
+ return ~0;
+ }
+
+ bool verbose = vm.count("dilv") == 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 tx sample rate
+ 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;
+
+ std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+
+ //create a transmit streamer
+ uhd::stream_args_t stream_args("fc32"); //complex floats
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //allocate buffer with data to send
+ std::vector<std::complex<float> > buff(tx_stream->get_max_num_samps(), std::complex<float>(ampl, ampl));
+
+ //setup metadata for the first packet
+ uhd::tx_metadata_t md;
+ md.start_of_burst = false;
+ md.end_of_burst = false;
+ md.has_time_spec = true;
+ md.time_spec = uhd::time_spec_t(seconds_in_future);
+
+ //the first call to send() will block this many seconds before sending:
+ const double timeout = seconds_in_future + 0.1; //timeout (delay before transmit + padding)
+
+ size_t num_acc_samps = 0; //number of accumulated samples
+ while(num_acc_samps < total_num_samps){
+ size_t samps_to_send = std::min(total_num_samps - num_acc_samps, buff.size());
+
+ //send a single packet
+ size_t num_tx_samps = tx_stream->send(
+ &buff.front(), samps_to_send, md, timeout
+ );
+
+ //do not use time spec for subsequent packets
+ md.has_time_spec = false;
+
+ if (num_tx_samps < samps_to_send) std::cerr << "Send timeout..." << std::endl;
+ if(verbose) std::cout << boost::format("Sent packet: %u samples") % num_tx_samps << std::endl;
+
+ num_acc_samps += num_tx_samps;
+ }
+
+ //send a mini EOB packet
+ md.end_of_burst = true;
+ tx_stream->send("", 0, md);
+
+ std::cout << std::endl << "Waiting for async burst ACK... " << std::flush;
+ uhd::async_metadata_t async_md;
+ bool got_async_burst_ack = false;
+ //loop through all messages for the ACK packet (may have underflow messages in queue)
+ while (not got_async_burst_ack and usrp->get_device()->recv_async_msg(async_md, timeout)){
+ got_async_burst_ack = (async_md.event_code == uhd::async_metadata_t::EVENT_CODE_BURST_ACK);
+ }
+ std::cout << (got_async_burst_ack? "success" : "fail") << std::endl;
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
diff --git a/host/examples/tx_waveforms.cpp b/host/examples/tx_waveforms.cpp
new file mode 100644
index 000000000..6a377fdac
--- /dev/null
+++ b/host/examples/tx_waveforms.cpp
@@ -0,0 +1,261 @@
+//
+// 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/utils/static.hpp>
+#include <uhd/usrp/multi_usrp.hpp>
+#include <uhd/exception.hpp>
+#include <boost/program_options.hpp>
+#include <boost/math/special_functions/round.hpp>
+#include <boost/foreach.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <complex>
+#include <csignal>
+#include <cmath>
+
+namespace po = boost::program_options;
+
+/***********************************************************************
+ * Signal handlers
+ **********************************************************************/
+static bool stop_signal_called = false;
+void sig_int_handler(int){stop_signal_called = true;}
+
+/***********************************************************************
+ * Waveform generators
+ **********************************************************************/
+static const size_t wave_table_len = 8192;
+
+class wave_table_class{
+public:
+ wave_table_class(const std::string &wave_type, const float ampl):
+ _wave_table(wave_table_len)
+ {
+ //compute real wave table with 1.0 amplitude
+ std::vector<double> real_wave_table(wave_table_len);
+ if (wave_type == "CONST"){
+ for (size_t i = 0; i < wave_table_len; i++)
+ real_wave_table[i] = 1.0;
+ }
+ else if (wave_type == "SQUARE"){
+ for (size_t i = 0; i < wave_table_len; i++)
+ real_wave_table[i] = (i < wave_table_len/2)? 0.0 : 1.0;
+ }
+ else if (wave_type == "RAMP"){
+ for (size_t i = 0; i < wave_table_len; i++)
+ real_wave_table[i] = 2.0*i/(wave_table_len-1) - 1.0;
+ }
+ else if (wave_type == "SINE"){
+ static const double tau = 2*std::acos(-1.0);
+ for (size_t i = 0; i < wave_table_len; i++)
+ real_wave_table[i] = std::sin((tau*i)/wave_table_len);
+ }
+ else throw std::runtime_error("unknown waveform type: " + wave_type);
+
+ //compute i and q pairs with 90% offset and scale to amplitude
+ for (size_t i = 0; i < wave_table_len; i++){
+ const size_t q = (i+(3*wave_table_len)/4)%wave_table_len;
+ _wave_table[i] = std::complex<float>(ampl*real_wave_table[i], ampl*real_wave_table[q]);
+ }
+ }
+
+ inline std::complex<float> operator()(const size_t index) const{
+ return _wave_table[index % wave_table_len];
+ }
+
+private:
+ std::vector<std::complex<float> > _wave_table;
+};
+
+/***********************************************************************
+ * Main function
+ **********************************************************************/
+int UHD_SAFE_MAIN(int argc, char *argv[]){
+ uhd::set_thread_priority_safe();
+
+ //variables to be set by po
+ std::string args, wave_type, ant, subdev, ref, otw;
+ size_t spb;
+ double rate, freq, gain, wave_freq, bw;
+ float ampl;
+
+ //setup the program options
+ po::options_description desc("Allowed options");
+ desc.add_options()
+ ("help", "help message")
+ ("args", po::value<std::string>(&args)->default_value(""), "single uhd device address args")
+ ("spb", po::value<size_t>(&spb)->default_value(0), "samples per buffer, 0 for default")
+ ("rate", po::value<double>(&rate), "rate of outgoing samples")
+ ("freq", po::value<double>(&freq), "RF center frequency in Hz")
+ ("ampl", po::value<float>(&ampl)->default_value(float(0.3)), "amplitude of the waveform [0 to 0.7]")
+ ("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")
+ ("wave-type", po::value<std::string>(&wave_type)->default_value("CONST"), "waveform type (CONST, SQUARE, RAMP, SINE)")
+ ("wave-freq", po::value<double>(&wave_freq)->default_value(0), "waveform frequency in Hz")
+ ("ref", po::value<std::string>(&ref)->default_value("internal"), "clock reference (internal, external, mimo)")
+ ("otw", po::value<std::string>(&otw)->default_value("sc16"), "specify the over-the-wire sample mode")
+ ;
+ 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 Waveforms %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_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;
+ }
+
+ for(size_t chan = 0; chan < usrp->get_tx_num_channels(); chan++) {
+ std::cout << boost::format("Setting TX Freq: %f MHz...") % (freq/1e6) << std::endl;
+ usrp->set_tx_freq(freq, chan);
+ std::cout << boost::format("Actual TX Freq: %f MHz...") % (usrp->get_tx_freq(chan)/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, chan);
+ std::cout << boost::format("Actual TX Gain: %f dB...") % usrp->get_tx_gain(chan) << 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, chan);
+ std::cout << boost::format("Actual TX Bandwidth: %f MHz...") % usrp->get_tx_bandwidth(chan) << std::endl << std::endl;
+ }
+
+ //set the antenna
+ if (vm.count("ant")) usrp->set_tx_antenna(ant, chan);
+ }
+
+ //for the const wave, set the wave freq for small samples per period
+ if (wave_freq == 0 and wave_type == "CONST"){
+ wave_freq = usrp->get_tx_rate()/2;
+ }
+
+ //error when the waveform is not possible to generate
+ if (std::abs(wave_freq) > usrp->get_tx_rate()/2){
+ throw std::runtime_error("wave freq out of Nyquist zone");
+ }
+ if (usrp->get_tx_rate()/std::abs(wave_freq) > wave_table_len/2){
+ throw std::runtime_error("wave freq too small for table");
+ }
+
+ //pre-compute the waveform values
+ const wave_table_class wave_table(wave_type, ampl);
+ const size_t step = boost::math::iround(wave_freq/usrp->get_tx_rate() * wave_table_len);
+ size_t index = 0;
+
+ //create a transmit streamer
+ //linearly map channels (index0 = channel0, index1 = channel1, ...)
+ uhd::stream_args_t stream_args("fc32", otw);
+ for (size_t chan = 0; chan < usrp->get_tx_num_channels(); chan++)
+ stream_args.channels.push_back(chan); //linear mapping
+ uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
+
+ //allocate a buffer which we re-use for each channel
+ if (spb == 0) spb = tx_stream->get_max_num_samps()*10;
+ std::vector<std::complex<float> > buff(spb);
+ std::vector<std::complex<float> *> buffs(usrp->get_tx_num_channels(), &buff.front());
+
+ //setup the metadata flags
+ uhd::tx_metadata_t md;
+ md.start_of_burst = true;
+ md.end_of_burst = false;
+ md.has_time_spec = true;
+ md.time_spec = uhd::time_spec_t(0.1);
+
+ std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
+ usrp->set_time_now(uhd::time_spec_t(0.0));
+
+ //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());
+ }
+
+ std::signal(SIGINT, &sig_int_handler);
+ std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
+
+ //send data until the signal handler gets called
+ while(not stop_signal_called){
+ //fill the buffer with the waveform
+ for (size_t n = 0; n < buff.size(); n++){
+ buff[n] = wave_table(index += step);
+ }
+
+ //send the entire contents of the buffer
+ tx_stream->send(buffs, buff.size(), md);
+
+ md.start_of_burst = false;
+ md.has_time_spec = false;
+ }
+
+ //send a mini EOB packet
+ md.end_of_burst = true;
+ tx_stream->send("", 0, md);
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+ return 0;
+}
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