From f820cce9be9bcea9723cf7b4e85a4ded2f1d2c62 Mon Sep 17 00:00:00 2001
From: Josh Blum <josh@joshknows.com>
Date: Wed, 27 Oct 2010 18:55:35 -0700
Subject: uhd: added rx to file example, simplified cmake file for examples
---
host/examples/CMakeLists.txt | 44 ++++++-------
host/examples/rx_to_file.cpp | 144 +++++++++++++++++++++++++++++++++++++++++++
2 files changed, 162 insertions(+), 26 deletions(-)
create mode 100644 host/examples/rx_to_file.cpp
(limited to 'host')
diff --git a/host/examples/CMakeLists.txt b/host/examples/CMakeLists.txt
index a8873f8d3..e355ce241 100644
--- a/host/examples/CMakeLists.txt
+++ b/host/examples/CMakeLists.txt
@@ -16,34 +16,26 @@
#
########################################################################
-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)
-
-ADD_EXECUTABLE(test_async_messages test_async_messages.cpp)
-TARGET_LINK_LIBRARIES(test_async_messages uhd)
-
-ADD_EXECUTABLE(test_pps_input test_pps_input.cpp)
-TARGET_LINK_LIBRARIES(test_pps_input uhd)
-
-ADD_EXECUTABLE(tx_timed_samples tx_timed_samples.cpp)
-TARGET_LINK_LIBRARIES(tx_timed_samples uhd)
-
-ADD_EXECUTABLE(tx_waveforms tx_waveforms.cpp)
-TARGET_LINK_LIBRARIES(tx_waveforms uhd)
-
-INSTALL(TARGETS
- benchmark_rx_rate
- rx_timed_samples
- test_async_messages
- test_pps_input
- tx_timed_samples
- tx_waveforms
- RUNTIME DESTINATION ${PKG_DATA_DIR}/examples
+# example applications
+########################################################################
+SET(example_sources
+ benchmark_rx_rate.cpp
+ rx_timed_samples.cpp
+ rx_to_file.cpp
+ test_async_messages.cpp
+ test_pps_input.cpp
+ tx_timed_samples.cpp
+ tx_waveforms.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_DATA_DIR}/examples)
+ENDFOREACH(example_source)
+
########################################################################
# ASCII Art DFT - requires curses, so this part is optional
########################################################################
diff --git a/host/examples/rx_to_file.cpp b/host/examples/rx_to_file.cpp
new file mode 100644
index 000000000..25727a7d3
--- /dev/null
+++ b/host/examples/rx_to_file.cpp
@@ -0,0 +1,144 @@
+//
+// 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/single_usrp.hpp>
+#include <boost/program_options.hpp>
+#include <boost/format.hpp>
+#include <iostream>
+#include <fstream>
+#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;
+ time_t seconds_in_future;
+ size_t total_num_samps;
+ double rx_rate, freq;
+
+ //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")
+ ("file", po::value<std::string>(&file)->default_value("out.16sc.dat"), "name of the file to write binary samples to")
+ ("secs", po::value<time_t>(&seconds_in_future)->default_value(1), "number of seconds in the future to receive")
+ ("nsamps", po::value<size_t>(&total_num_samps)->default_value(1000), "total number of samples to receive")
+ ("rxrate", po::value<double>(&rx_rate)->default_value(100e6/16), "rate of incoming samples")
+ ("freq", po::value<double>(&freq)->default_value(0), "rf center frequency in Hz")
+ ("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 to File %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::single_usrp::sptr sdev = uhd::usrp::single_usrp::make(args);
+ uhd::device::sptr dev = sdev->get_device();
+ std::cout << boost::format("Using Device: %s") % sdev->get_pp_string() << std::endl;
+
+ //set properties on the device
+ std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate/1e6) << std::endl;
+ 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(0.0));
+
+ uhd::gain_range_t rx_gain = sdev->get_rx_gain_range();
+ std::cout << "Setting RX Gain to: " << rx_gain.max << std::endl;
+ sdev->set_rx_gain(rx_gain.max);
+
+ sleep(1);
+ std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
+
+ //setup streaming
+ std::cout << std::endl;
+ std::cout << boost::format(
+ "Begin streaming %u samples, %d 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);
+ sdev->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<short> > buff(dev->get_max_recv_samps_per_packet());
+ std::ofstream outfile(file.c_str(), std::ofstream::binary);
+
+ while(num_acc_samps < total_num_samps){
+ size_t num_rx_samps = dev->recv(
+ &buff.front(), buff.size(), md,
+ uhd::io_type_t::COMPLEX_INT16,
+ uhd::device::RECV_MODE_ONE_PACKET
+ );
+
+ //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;
+ }
+
+ //write complex short integer samples to the binary file
+ outfile.write((const char*)&buff[0], num_rx_samps * sizeof(std::complex<short>));
+
+ if(verbose) std::cout << boost::format(
+ "Got 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;
+ } done_loop:
+
+ outfile.close();
+
+ //finished
+ std::cout << std::endl << "Done!" << std::endl << std::endl;
+
+ return 0;
+}
--
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