diff options
Diffstat (limited to 'host/examples')
| -rw-r--r-- | host/examples/CMakeLists.txt | 12 | ||||
| -rw-r--r-- | host/examples/benchmark_rx_rate.cpp | 150 | ||||
| -rw-r--r-- | host/examples/rx_timed_samples.cpp | 4 |
3 files changed, 162 insertions, 4 deletions
diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt index a537c0901..5071b114f 100644 --- a/host/examples/CMakeLists.txt +++ b/host/examples/CMakeLists.txt @@ -15,10 +15,18 @@ # along with this program. If not, see <http://www.gnu.org/licenses/>. # +ADD_EXECUTABLE(benchmark_rx_rate benchmark_rx_rate.cpp) +TARGET_LINK_LIBRARIES(benchmark_rx_rate uhd) + ADD_EXECUTABLE(rx_timed_samples rx_timed_samples.cpp) TARGET_LINK_LIBRARIES(rx_timed_samples uhd) -INSTALL(TARGETS rx_timed_samples RUNTIME DESTINATION ${PKG_DATA_DIR}/examples) ADD_EXECUTABLE(tx_timed_samples tx_timed_samples.cpp) TARGET_LINK_LIBRARIES(tx_timed_samples uhd) -INSTALL(TARGETS tx_timed_samples RUNTIME DESTINATION ${PKG_DATA_DIR}/examples) + +INSTALL(TARGETS + benchmark_rx_rate + rx_timed_samples + tx_timed_samples + RUNTIME DESTINATION ${PKG_DATA_DIR}/examples +) diff --git a/host/examples/benchmark_rx_rate.cpp b/host/examples/benchmark_rx_rate.cpp new file mode 100644 index 000000000..2ab98bc22 --- /dev/null +++ b/host/examples/benchmark_rx_rate.cpp @@ -0,0 +1,150 @@ +// +// Copyright 2010 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/simple_usrp.hpp> +#include <boost/math/special_functions/round.hpp> +#include <boost/program_options.hpp> +#include <boost/format.hpp> +#include <iostream> +#include <complex> + +namespace po = boost::program_options; + +//TODO add time spec diff to API +static inline double time_spec_diff( + uhd::time_spec_t time_spec_begin, + uhd::time_spec_t time_spec_end +){ + return (time_spec_end.secs - time_spec_begin.secs) + \ + ((time_spec_end.nsecs - time_spec_begin.nsecs)*1e-9); +} + +static inline void test_device( + uhd::usrp::simple_usrp::sptr sdev, + double rx_rate_sps, + double duration_secs +){ + uhd::device::sptr dev = sdev->get_device(); + std::cout << boost::format("Testing receive rate %f Msps (%f second run)") % (rx_rate_sps/1e6) % duration_secs << std::endl; + + //allocate recv buffer and metatdata + uhd::rx_metadata_t md; + std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet()); + + //declare status variables + bool got_first_packet = false; + size_t total_recv_packets = 0; + size_t total_lost_samples = 0; + size_t total_recv_samples = 0; + uhd::time_spec_t initial_time_spec; + uhd::time_spec_t next_expected_time_spec; + + sdev->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS); + do { + size_t num_rx_samps = dev->recv( + boost::asio::buffer(buff), md, + uhd::io_type_t::COMPLEX_FLOAT32, + uhd::device::RECV_MODE_ONE_PACKET + ); + if (num_rx_samps == 0){ + std::cerr << "Unexpected timeout on recv, exit test..." << std::endl; + return; + } + if (not md.has_time_spec){ + std::cerr << "Metadata missing time spec, exit test..." << std::endl; + return; + } + + total_recv_samples += num_rx_samps; + total_recv_packets++; + + if (not got_first_packet){ + initial_time_spec = md.time_spec; + next_expected_time_spec = initial_time_spec; + got_first_packet = true; + } + + total_lost_samples += boost::math::iround(rx_rate_sps*time_spec_diff(next_expected_time_spec, md.time_spec)); + next_expected_time_spec = md.time_spec + uhd::time_spec_t(0, num_rx_samps, rx_rate_sps); + + } while(time_spec_diff(initial_time_spec, next_expected_time_spec) < duration_secs); + sdev->issue_stream_cmd(uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS); + + //flush the buffers + while(dev->recv( + boost::asio::buffer(buff), md, + uhd::io_type_t::COMPLEX_FLOAT32, + uhd::device::RECV_MODE_ONE_PACKET + )); + + //print a summary + std::cout << std::endl; //go to newline, recv may spew SXSYSZ... + std::cout << boost::format(" Received packets: %d") % total_recv_packets << std::endl; + std::cout << boost::format(" Received samples: %d") % total_recv_samples << std::endl; + std::cout << boost::format(" Lost samples: %d") % total_lost_samples << std::endl; + size_t packets_lost = boost::math::iround(double(total_lost_samples)/dev->get_max_recv_samps_per_packet()); + std::cout << boost::format(" Lost packets: %d (approximate)") % packets_lost << std::endl; + double actual_rx_rate_sps = (total_recv_samples*rx_rate_sps)/(total_recv_samples+total_lost_samples); + std::cout << boost::format(" Sustained receive rate: %f Msps") % (actual_rx_rate_sps/1e6) << std::endl; + std::cout << std::endl << std::endl; +} + +int UHD_SAFE_MAIN(int argc, char *argv[]){ + uhd::set_thread_priority_safe(); + + //variables to be set by po + std::string args; + double duration; + + //setup the program options + po::options_description desc("Allowed options"); + desc.add_options() + ("help", "help message") + ("args", po::value<std::string>(&args)->default_value(""), "simple uhd device address args") + ("duration", po::value<double>(&duration)->default_value(10.0), "duration for each test in seconds") + ; + 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 Benchmark RX Rate %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::simple_usrp::sptr sdev = uhd::usrp::simple_usrp::make(args); + std::cout << boost::format("Using Device: %s") % sdev->get_name() << std::endl; + + sdev->set_rx_rate(500e3); //initial rate + while(true){ + double rate = sdev->get_rx_rate(); + test_device(sdev, rate, duration); + sdev->set_rx_rate(rate*2); //double the rate + if (sdev->get_rx_rate() == rate) break; + } + + //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 index 6920b34d1..adc745024 100644 --- a/host/examples/rx_timed_samples.cpp +++ b/host/examples/rx_timed_samples.cpp @@ -85,8 +85,8 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ uhd::rx_metadata_t md; std::vector<std::complex<float> > buff(dev->get_max_recv_samps_per_packet()); size_t num_rx_samps = dev->recv( - boost::asio::buffer(buff), - md, uhd::io_type_t::COMPLEX_FLOAT32, + boost::asio::buffer(buff), md, + uhd::io_type_t::COMPLEX_FLOAT32, uhd::device::RECV_MODE_ONE_PACKET ); if (num_rx_samps == 0 and num_acc_samps > 0){ |