From 17c494b79a99d947a150cdbc582ba331aeb57786 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 18 May 2010 14:26:43 -0700 Subject: Added tx timed samples example. Added called to device to get max samples per packet. Removed device props that gave max samples per packet. --- host/examples/CMakeLists.txt | 4 ++ host/examples/rx_timed_samples.cpp | 13 +++--- host/examples/tx_timed_samples.cpp | 92 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 104 insertions(+), 5 deletions(-) create mode 100644 host/examples/tx_timed_samples.cpp (limited to 'host/examples') diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt index 242857625..a537c0901 100644 --- a/host/examples/CMakeLists.txt +++ b/host/examples/CMakeLists.txt @@ -18,3 +18,7 @@ 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) diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp index 4b8774036..d2306c7c4 100644 --- a/host/examples/rx_timed_samples.cpp +++ b/host/examples/rx_timed_samples.cpp @@ -29,7 +29,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ std::string args; int seconds_in_future; size_t total_num_samps; - double rx_rate; + double rx_rate, freq; //setup the program options po::options_description desc("Allowed options"); @@ -39,10 +39,11 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ ("secs", po::value(&seconds_in_future)->default_value(3), "number of seconds in the future to receive") ("nsamps", po::value(&total_num_samps)->default_value(1000), "total number of samples to receive") ("rxrate", po::value(&rx_rate)->default_value(100e6/16), "rate of incoming samples") + ("freq", po::value(&freq)->default_value(0), "rf center frequency in Hz") ; po::variables_map vm; po::store(po::parse_command_line(argc, argv, desc), vm); - po::notify(vm); + po::notify(vm); //print the help message if (vm.count("help")){ @@ -62,6 +63,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ sdev->set_rx_rate(rx_rate); std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->get_rx_rate()/1e6) << std::endl; std::cout << boost::format("Setting device timestamp to 0...") << std::endl; + sdev->set_rx_freq(freq); sdev->set_time_now(uhd::time_spec_t(0)); //setup streaming @@ -78,10 +80,11 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ size_t num_acc_samps = 0; //number of accumulated samples while(num_acc_samps < total_num_samps){ uhd::rx_metadata_t md; - std::complex buff[1000]; + std::vector > buff(dev->get_max_recv_samps_per_packet()); size_t num_rx_samps = dev->recv( - boost::asio::buffer(buff, sizeof(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) continue; //wait for packets with contents diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp new file mode 100644 index 000000000..6dee69cd5 --- /dev/null +++ b/host/examples/tx_timed_samples.cpp @@ -0,0 +1,92 @@ +// +// 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 . +// + +#include +#include +#include +#include +#include +#include + +namespace po = boost::program_options; + +int UHD_SAFE_MAIN(int argc, char *argv[]){ + //variables to be set by po + std::string args; + int seconds_in_future; + size_t total_num_samps; + double tx_rate, freq; + float ampl; + + //setup the program options + po::options_description desc("Allowed options"); + desc.add_options() + ("help", "help message") + ("args", po::value(&args)->default_value(""), "simple uhd device address args") + ("secs", po::value(&seconds_in_future)->default_value(3), "number of seconds in the future to transmit") + ("nsamps", po::value(&total_num_samps)->default_value(1000), "total number of samples to transmit") + ("txrate", po::value(&tx_rate)->default_value(100e6/16), "rate of outgoing samples") + ("freq", po::value(&freq)->default_value(0), "rf center frequency in Hz") + ("ampl", po::value(&l)->default_value(0.3), "amplitude of each sample") + ; + 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; + } + + //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); + uhd::device::sptr dev = sdev->get_device(); + std::cout << boost::format("Using Device: %s") % sdev->get_name() << std::endl; + + //set properties on the device + std::cout << boost::format("Setting TX Rate: %f Msps...") % (tx_rate/1e6) << std::endl; + sdev->set_tx_rate(tx_rate); + std::cout << boost::format("Actual TX Rate: %f Msps...") % (sdev->get_tx_rate()/1e6) << std::endl; + std::cout << boost::format("Setting device timestamp to 0...") << std::endl; + sdev->set_tx_freq(freq); + sdev->set_time_now(uhd::time_spec_t(0)); + + //data to send + std::vector > buff(total_num_samps, std::complex(ampl, ampl)); + 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(seconds_in_future); + + //send the entire buffer, let the driver handle fragmentation + size_t num_tx_samps = dev->send( + boost::asio::buffer(buff), + md, uhd::io_type_t::COMPLEX_FLOAT32, + uhd::device::SEND_MODE_FULL_BUFF + ); + std::cout << std::endl << boost::format("Sent %d samples") % num_tx_samps << std::endl; + + + //finished + std::cout << std::endl << "Done!" << std::endl << std::endl; + + return 0; +} -- cgit v1.2.3 From bea1c582491d71bf90e240be345a32ba77028460 Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Tue, 18 May 2010 18:03:27 -0700 Subject: tweaks to remove warning is msvc --- host/examples/tx_timed_samples.cpp | 2 +- host/lib/transport/vrt_packet_handler.hpp | 5 +++++ 2 files changed, 6 insertions(+), 1 deletion(-) (limited to 'host/examples') diff --git a/host/examples/tx_timed_samples.cpp b/host/examples/tx_timed_samples.cpp index 6dee69cd5..e9e0c785e 100644 --- a/host/examples/tx_timed_samples.cpp +++ b/host/examples/tx_timed_samples.cpp @@ -41,7 +41,7 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ ("nsamps", po::value(&total_num_samps)->default_value(1000), "total number of samples to transmit") ("txrate", po::value(&tx_rate)->default_value(100e6/16), "rate of outgoing samples") ("freq", po::value(&freq)->default_value(0), "rf center frequency in Hz") - ("ampl", po::value(&l)->default_value(0.3), "amplitude of each sample") + ("ampl", po::value(&l)->default_value(float(0.3)), "amplitude of each sample") ; po::variables_map vm; po::store(po::parse_command_line(argc, argv, desc), vm); diff --git a/host/lib/transport/vrt_packet_handler.hpp b/host/lib/transport/vrt_packet_handler.hpp index c857db1c4..5b73c82bf 100644 --- a/host/lib/transport/vrt_packet_handler.hpp +++ b/host/lib/transport/vrt_packet_handler.hpp @@ -28,6 +28,7 @@ #include #include #include +#include #include namespace vrt_packet_handler{ @@ -209,6 +210,8 @@ namespace vrt_packet_handler{ } return total_num_samps; } + + default: throw std::runtime_error("unknown recv mode"); }//switch(recv_mode) } @@ -350,6 +353,8 @@ namespace vrt_packet_handler{ } return total_num_samps; } + + default: throw std::runtime_error("unknown send mode"); }//switch(send_mode) } -- cgit v1.2.3 From 71169b8e030d984220eadde83c4b40481f97cf6b Mon Sep 17 00:00:00 2001 From: Josh Blum Date: Mon, 24 May 2010 14:38:25 -0700 Subject: Added timeout error message to timed samples example. Added try catch to recv helper because vrt unpack can throw. --- host/examples/rx_timed_samples.cpp | 4 ++++ host/lib/transport/vrt_packet_handler.hpp | 11 ++++++++--- 2 files changed, 12 insertions(+), 3 deletions(-) (limited to 'host/examples') diff --git a/host/examples/rx_timed_samples.cpp b/host/examples/rx_timed_samples.cpp index d2306c7c4..64da260d5 100644 --- a/host/examples/rx_timed_samples.cpp +++ b/host/examples/rx_timed_samples.cpp @@ -86,6 +86,10 @@ int UHD_SAFE_MAIN(int argc, char *argv[]){ md, uhd::io_type_t::COMPLEX_FLOAT32, uhd::device::RECV_MODE_ONE_PACKET ); + if (num_rx_samps == 0 and num_acc_samps > 0){ + std::cout << "Got timeout before all samples received, possible packet loss, exiting loop..." << std::endl; + break; + } if (num_rx_samps == 0) continue; //wait for packets with contents std::cout << boost::format("Got packet: %u samples, %u secs, %u nsecs") diff --git a/host/lib/transport/vrt_packet_handler.hpp b/host/lib/transport/vrt_packet_handler.hpp index 2a7f995a1..81420b39e 100644 --- a/host/lib/transport/vrt_packet_handler.hpp +++ b/host/lib/transport/vrt_packet_handler.hpp @@ -122,9 +122,14 @@ namespace vrt_packet_handler{ state.fragment_offset_in_samps = 0; state.managed_buff = zc_iface->get_recv_buff(); recv_cb(state.managed_buff); //callback before vrt unpack - _recv1_helper( - state, metadata, tick_rate, vrt_header_offset_words32 - ); + try{ + _recv1_helper( + state, metadata, tick_rate, vrt_header_offset_words32 + ); + }catch(const std::exception &e){ + std::cerr << "Error (recv): " << e.what() << std::endl; + return 0; + } } //extract the number of samples available to copy -- cgit v1.2.3