1//
2// Copyright 2010-2012,2014-2015 Ettus Research LLC
3// Copyright 2018 Ettus Research, a National Instruments Company
4//
5// SPDX-License-Identifier: GPL-3.0-or-later
6//
7
8#include "wavetable.hpp"
9#include <uhd/exception.hpp>
10#include <uhd/types/tune_request.hpp>
11#include <uhd/usrp/multi_usrp.hpp>
12#include <uhd/utils/safe_main.hpp>
13#include <uhd/utils/static.hpp>
14#include <uhd/utils/thread.hpp>
15#include <boost/algorithm/string.hpp>
16#include <boost/filesystem.hpp>
17#include <boost/format.hpp>
18#include <boost/program_options.hpp>
19#include <cmath>
20#include <csignal>
21#include <fstream>
22#include <functional>
23#include <iostream>
24#include <thread>
25
26namespace po = boost::program_options;
27
28/***********************************************************************
29 * Signal handlers
30 **********************************************************************/
31static bool stop_signal_called = false;
32void sig_int_handler(int)
33{
34 stop_signal_called = true;
35}
36
37/***********************************************************************
38 * Utilities
39 **********************************************************************/
40//! Change to filename, e.g. from usrp_samples.dat to usrp_samples.00.dat,
41// but only if multiple names are to be generated.
42std::string generate_out_filename(
43 const std::string& base_fn, size_t n_names, size_t this_name)
44{
45 if (n_names == 1) {
46 return base_fn;
47 }
48
49 boost::filesystem::path base_fn_fp(base_fn);
50 base_fn_fp.replace_extension(boost::filesystem::path(
51 str(boost::format("%02d%s") % this_name % base_fn_fp.extension().string())));
52 return base_fn_fp.string();
53}
54
55
56/***********************************************************************
57 * transmit_worker function
58 * A function to be used in a thread for transmitting
59 **********************************************************************/
60void transmit_worker(std::vector<std::complex<float>> buff,
61 wave_table_class wave_table,
62 uhd::tx_streamer::sptr tx_streamer,
63 uhd::tx_metadata_t metadata,
64 size_t step,
65 size_t index,
66 int num_channels)
67{
68 std::vector<std::complex<float>*> buffs(num_channels, &buff.front());
69
70 // send data until the signal handler gets called
71 while (not stop_signal_called) {
72 // fill the buffer with the waveform
73 for (size_t n = 0; n < buff.size(); n++) {
74 buff[n] = wave_table(index += step);
75 }
76
77 // send the entire contents of the buffer
78 tx_streamer->send(buffs, buff.size(), metadata);
79
80 metadata.start_of_burst = false;
81 metadata.has_time_spec = false;
82 }
83
84 // send a mini EOB packet
85 metadata.end_of_burst = true;
86 tx_streamer->send("", 0, metadata);
87}
88
89
90/***********************************************************************
91 * recv_to_file function
92 **********************************************************************/
93template <typename samp_type>
94void recv_to_file(uhd::usrp::multi_usrp::sptr usrp,
95 const std::string& cpu_format,
96 const std::string& wire_format,
97 const std::string& file,
98 size_t samps_per_buff,
99 int num_requested_samples,
100 double settling_time,
101 std::vector<size_t> rx_channel_nums)
102{
103 int num_total_samps = 0;
104 // create a receive streamer
105 uhd::stream_args_t stream_args(cpu_format, wire_format);
106 stream_args.channels = rx_channel_nums;
107 uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);
108
109 // Prepare buffers for received samples and metadata
110 uhd::rx_metadata_t md;
111 std::vector<std::vector<samp_type>> buffs(
112 rx_channel_nums.size(), std::vector<samp_type>(samps_per_buff));
113 // create a vector of pointers to point to each of the channel buffers
114 std::vector<samp_type*> buff_ptrs;
115 for (size_t i = 0; i < buffs.size(); i++) {
116 buff_ptrs.push_back(&buffs[i].front());
117 }
118
119 // Create one ofstream object per channel
120 // (use shared_ptr because ofstream is non-copyable)
121 std::vector<std::shared_ptr<std::ofstream>> outfiles;
122 for (size_t i = 0; i < buffs.size(); i++) {
123 const std::string this_filename = generate_out_filename(file, buffs.size(), i);
124 outfiles.push_back(std::shared_ptr<std::ofstream>(
125 new std::ofstream(this_filename.c_str(), std::ofstream::binary)));
126 }
127 UHD_ASSERT_THROW(outfiles.size() == buffs.size());
128 UHD_ASSERT_THROW(buffs.size() == rx_channel_nums.size());
129 bool overflow_message = true;
130 // We increase the first timeout to cover for the delay between now + the
131 // command time, plus 500ms of buffer. In the loop, we will then reduce the
132 // timeout for subsequent receives.
133 double timeout = settling_time + 0.5f;
134
135 // setup streaming
136 uhd::stream_cmd_t stream_cmd((num_requested_samples == 0)
137 ? uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS
138 : uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
139 stream_cmd.num_samps = num_requested_samples;
140 stream_cmd.stream_now = false;
141 stream_cmd.time_spec = usrp->get_time_now() + uhd::time_spec_t(settling_time);
142 rx_stream->issue_stream_cmd(stream_cmd);
143
144 while (not stop_signal_called
145 and (num_requested_samples > num_total_samps or num_requested_samples == 0)) {
146 size_t num_rx_samps = rx_stream->recv(buff_ptrs, samps_per_buff, md, timeout);
147 timeout = 0.1f; // small timeout for subsequent recv
148
149 if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
150 std::cout << "Timeout while streaming" << std::endl;
151 break;
152 }
153 if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_OVERFLOW) {
154 if (overflow_message) {
155 overflow_message = false;
156 std::cerr
157 << boost::format(
158 "Got an overflow indication. Please consider the following:\n"
159 " Your write medium must sustain a rate of %fMB/s.\n"
160 " Dropped samples will not be written to the file.\n"
161 " Please modify this example for your purposes.\n"
162 " This message will not appear again.\n")
163 % (usrp->get_rx_rate() * sizeof(samp_type) / 1e6);
164 }
165 continue;
166 }
167 if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE) {
168 throw std::runtime_error("Receiver error " + md.strerror());
169 }
170
171 num_total_samps += num_rx_samps;
172
173 for (size_t i = 0; i < outfiles.size(); i++) {
174 outfiles[i]->write(
175 (const char*)buff_ptrs[i], num_rx_samps * sizeof(samp_type));
176 }
177 }
178
179 // Shut down receiver
180 stream_cmd.stream_mode = uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS;
181 rx_stream->issue_stream_cmd(stream_cmd);
182
183 // Close files
184 for (size_t i = 0; i < outfiles.size(); i++) {
185 outfiles[i]->close();
186 }
187}
188
189
190/***********************************************************************
191 * Main function
192 **********************************************************************/
193int UHD_SAFE_MAIN(int argc, char* argv[])
194{
195 // transmit variables to be set by po
196 std::string tx_args, wave_type, tx_ant, tx_subdev, ref, otw, tx_channels;
197 double tx_rate, tx_freq, tx_gain, wave_freq, tx_bw;
198 float ampl;
199
200 // receive variables to be set by po
201 std::string rx_args, file, type, rx_ant, rx_subdev, rx_channels;
202 size_t total_num_samps, spb;
203 double rx_rate, rx_freq, rx_gain, rx_bw;
204 double settling;
205
206 // setup the program options
207 po::options_description desc("Allowed options");
208 // clang-format off
209 desc.add_options()
210 ("help", "help message")
211 ("tx-args", po::value<std::string>(&tx_args)->default_value(""), "uhd transmit device address args")
212 ("rx-args", po::value<std::string>(&rx_args)->default_value(""), "uhd receive device address args")
213 ("file", po::value<std::string>(&file)->default_value("usrp_samples.dat"), "name of the file to write binary samples to")
214 ("type", po::value<std::string>(&type)->default_value("short"), "sample type in file: double, float, or short")
215 ("nsamps", po::value<size_t>(&total_num_samps)->default_value(0), "total number of samples to receive")
216 ("settling", po::value<double>(&settling)->default_value(double(0.2)), "settling time (seconds) before receiving")
217 ("spb", po::value<size_t>(&spb)->default_value(0), "samples per buffer, 0 for default")
218 ("tx-rate", po::value<double>(&tx_rate), "rate of transmit outgoing samples")
219 ("rx-rate", po::value<double>(&rx_rate), "rate of receive incoming samples")
220 ("tx-freq", po::value<double>(&tx_freq), "transmit RF center frequency in Hz")
221 ("rx-freq", po::value<double>(&rx_freq), "receive RF center frequency in Hz")
222 ("ampl", po::value<float>(&l)->default_value(float(0.3)), "amplitude of the waveform [0 to 0.7]")
223 ("tx-gain", po::value<double>(&tx_gain), "gain for the transmit RF chain")
224 ("rx-gain", po::value<double>(&rx_gain), "gain for the receive RF chain")
225 ("tx-ant", po::value<std::string>(&tx_ant), "transmit antenna selection")
226 ("rx-ant", po::value<std::string>(&rx_ant), "receive antenna selection")
227 ("tx-subdev", po::value<std::string>(&tx_subdev), "transmit subdevice specification")
228 ("rx-subdev", po::value<std::string>(&rx_subdev), "receive subdevice specification")
229 ("tx-bw", po::value<double>(&tx_bw), "analog transmit filter bandwidth in Hz")
230 ("rx-bw", po::value<double>(&rx_bw), "analog receive filter bandwidth in Hz")
231 ("wave-type", po::value<std::string>(&wave_type)->default_value("CONST"), "waveform type (CONST, SQUARE, RAMP, SINE)")
232 ("wave-freq", po::value<double>(&wave_freq)->default_value(0), "waveform frequency in Hz")
233 ("ref", po::value<std::string>(&ref)->default_value("internal"), "clock reference (internal, external, mimo)")
234 ("otw", po::value<std::string>(&otw)->default_value("sc16"), "specify the over-the-wire sample mode")
235 ("tx-channels", po::value<std::string>(&tx_channels)->default_value("0"), "which TX channel(s) to use (specify \"0\", \"1\", \"0,1\", etc)")
236 ("rx-channels", po::value<std::string>(&rx_channels)->default_value("0"), "which RX channel(s) to use (specify \"0\", \"1\", \"0,1\", etc)")
237 ("tx-int-n", "tune USRP TX with integer-N tuning")
238 ("rx-int-n", "tune USRP RX with integer-N tuning")
239 ;
240 // clang-format on
241 po::variables_map vm;
242 po::store(po::parse_command_line(argc, argv, desc), vm);
243 po::notify(vm);
244
245 // print the help message
246 if (vm.count("help")) {
247 std::cout << "UHD TXRX Loopback to File " << desc << std::endl;
248 return ~0;
249 }
250
251 // create a usrp device
252 std::cout << std::endl;
253 std::cout << boost::format("Creating the transmit usrp device with: %s...") % tx_args
254 << std::endl;
255 uhd::usrp::multi_usrp::sptr tx_usrp = uhd::usrp::multi_usrp::make(tx_args);
256 std::cout << std::endl;
257 std::cout << boost::format("Creating the receive usrp device with: %s...") % rx_args
258 << std::endl;
259 uhd::usrp::multi_usrp::sptr rx_usrp = uhd::usrp::multi_usrp::make(rx_args);
260
261 // always select the subdevice first, the channel mapping affects the other settings
262 if (vm.count("tx-subdev"))
263 tx_usrp->set_tx_subdev_spec(tx_subdev);
264 if (vm.count("rx-subdev"))
265 rx_usrp->set_rx_subdev_spec(rx_subdev);
266
267 // detect which channels to use
268 std::vector<std::string> tx_channel_strings;
269 std::vector<size_t> tx_channel_nums;
270 boost::split(tx_channel_strings, tx_channels, boost::is_any_of("\"',"));
271 for (size_t ch = 0; ch < tx_channel_strings.size(); ch++) {
272 size_t chan = std::stoi(tx_channel_strings[ch]);
273 if (chan >= tx_usrp->get_tx_num_channels()) {
274 throw std::runtime_error("Invalid TX channel(s) specified.");
275 } else
276 tx_channel_nums.push_back(std::stoi(tx_channel_strings[ch]));
277 }
278 std::vector<std::string> rx_channel_strings;
279 std::vector<size_t> rx_channel_nums;
280 boost::split(rx_channel_strings, rx_channels, boost::is_any_of("\"',"));
281 for (size_t ch = 0; ch < rx_channel_strings.size(); ch++) {
282 size_t chan = std::stoi(rx_channel_strings[ch]);
283 if (chan >= rx_usrp->get_rx_num_channels()) {
284 throw std::runtime_error("Invalid RX channel(s) specified.");
285 } else
286 rx_channel_nums.push_back(std::stoi(rx_channel_strings[ch]));
287 }
288
289 // Lock mboard clocks
290 if (vm.count("ref")) {
291 tx_usrp->set_clock_source(ref);
292 rx_usrp->set_clock_source(ref);
293 }
294
295 std::cout << "Using TX Device: " << tx_usrp->get_pp_string() << std::endl;
296 std::cout << "Using RX Device: " << rx_usrp->get_pp_string() << std::endl;
297
298 // set the transmit sample rate
299 if (not vm.count("tx-rate")) {
300 std::cerr << "Please specify the transmit sample rate with --tx-rate"
301 << std::endl;
302 return ~0;
303 }
304 std::cout << boost::format("Setting TX Rate: %f Msps...") % (tx_rate / 1e6)
305 << std::endl;
306 tx_usrp->set_tx_rate(tx_rate);
307 std::cout << boost::format("Actual TX Rate: %f Msps...")
308 % (tx_usrp->get_tx_rate() / 1e6)
309 << std::endl
310 << std::endl;
311
312 // set the receive sample rate
313 if (not vm.count("rx-rate")) {
314 std::cerr << "Please specify the sample rate with --rx-rate" << std::endl;
315 return ~0;
316 }
317 std::cout << boost::format("Setting RX Rate: %f Msps...") % (rx_rate / 1e6)
318 << std::endl;
319 rx_usrp->set_rx_rate(rx_rate);
320 std::cout << boost::format("Actual RX Rate: %f Msps...")
321 % (rx_usrp->get_rx_rate() / 1e6)
322 << std::endl
323 << std::endl;
324
325 // set the transmit center frequency
326 if (not vm.count("tx-freq")) {
327 std::cerr << "Please specify the transmit center frequency with --tx-freq"
328 << std::endl;
329 return ~0;
330 }
331
332 for (size_t ch = 0; ch < tx_channel_nums.size(); ch++) {
333 size_t channel = tx_channel_nums[ch];
334 if (tx_channel_nums.size() > 1) {
335 std::cout << "Configuring TX Channel " << channel << std::endl;
336 }
337 std::cout << boost::format("Setting TX Freq: %f MHz...") % (tx_freq / 1e6)
338 << std::endl;
339 uhd::tune_request_t tx_tune_request(tx_freq);
340 if (vm.count("tx-int-n"))
341 tx_tune_request.args = uhd::device_addr_t("mode_n=integer");
342 tx_usrp->set_tx_freq(tx_tune_request, channel);
343 std::cout << boost::format("Actual TX Freq: %f MHz...")
344 % (tx_usrp->get_tx_freq(channel) / 1e6)
345 << std::endl
346 << std::endl;
347
348 // set the rf gain
349 if (vm.count("tx-gain")) {
350 std::cout << boost::format("Setting TX Gain: %f dB...") % tx_gain
351 << std::endl;
352 tx_usrp->set_tx_gain(tx_gain, channel);
353 std::cout << boost::format("Actual TX Gain: %f dB...")
354 % tx_usrp->get_tx_gain(channel)
355 << std::endl
356 << std::endl;
357 }
358
359 // set the analog frontend filter bandwidth
360 if (vm.count("tx-bw")) {
361 std::cout << boost::format("Setting TX Bandwidth: %f MHz...") % tx_bw
362 << std::endl;
363 tx_usrp->set_tx_bandwidth(tx_bw, channel);
364 std::cout << boost::format("Actual TX Bandwidth: %f MHz...")
365 % tx_usrp->get_tx_bandwidth(channel)
366 << std::endl
367 << std::endl;
368 }
369
370 // set the antenna
371 if (vm.count("tx-ant"))
372 tx_usrp->set_tx_antenna(tx_ant, channel);
373 }
374
375 for (size_t ch = 0; ch < rx_channel_nums.size(); ch++) {
376 size_t channel = rx_channel_nums[ch];
377 if (rx_channel_nums.size() > 1) {
378 std::cout << "Configuring RX Channel " << channel << std::endl;
379 }
380
381 // set the receive center frequency
382 if (not vm.count("rx-freq")) {
383 std::cerr << "Please specify the center frequency with --rx-freq"
384 << std::endl;
385 return ~0;
386 }
387 std::cout << boost::format("Setting RX Freq: %f MHz...") % (rx_freq / 1e6)
388 << std::endl;
389 uhd::tune_request_t rx_tune_request(rx_freq);
390 if (vm.count("rx-int-n"))
391 rx_tune_request.args = uhd::device_addr_t("mode_n=integer");
392 rx_usrp->set_rx_freq(rx_tune_request, channel);
393 std::cout << boost::format("Actual RX Freq: %f MHz...")
394 % (rx_usrp->get_rx_freq(channel) / 1e6)
395 << std::endl
396 << std::endl;
397
398 // set the receive rf gain
399 if (vm.count("rx-gain")) {
400 std::cout << boost::format("Setting RX Gain: %f dB...") % rx_gain
401 << std::endl;
402 rx_usrp->set_rx_gain(rx_gain, channel);
403 std::cout << boost::format("Actual RX Gain: %f dB...")
404 % rx_usrp->get_rx_gain(channel)
405 << std::endl
406 << std::endl;
407 }
408
409 // set the receive analog frontend filter bandwidth
410 if (vm.count("rx-bw")) {
411 std::cout << boost::format("Setting RX Bandwidth: %f MHz...") % (rx_bw / 1e6)
412 << std::endl;
413 rx_usrp->set_rx_bandwidth(rx_bw, channel);
414 std::cout << boost::format("Actual RX Bandwidth: %f MHz...")
415 % (rx_usrp->get_rx_bandwidth(channel) / 1e6)
416 << std::endl
417 << std::endl;
418 }
419
420 // set the receive antenna
421 if (vm.count("rx-ant"))
422 rx_usrp->set_rx_antenna(rx_ant, channel);
423 }
424
425 // Align times in the RX USRP (the TX USRP does not require time-syncing)
426 if (rx_usrp->get_num_mboards() > 1) {
427 rx_usrp->set_time_unknown_pps(uhd::time_spec_t(0.0));
428 }
429
430 // for the const wave, set the wave freq for small samples per period
431 if (wave_freq == 0 and wave_type == "CONST") {
432 wave_freq = tx_usrp->get_tx_rate() / 2;
433 }
434
435 // error when the waveform is not possible to generate
436 if (std::abs(wave_freq) > tx_usrp->get_tx_rate() / 2) {
437 throw std::runtime_error("wave freq out of Nyquist zone");
438 }
439 if (tx_usrp->get_tx_rate() / std::abs(wave_freq) > wave_table_len / 2) {
440 throw std::runtime_error("wave freq too small for table");
441 }
442
443 // pre-compute the waveform values
444 const wave_table_class wave_table(wave_type, ampl);
445 const size_t step = std::lround(wave_freq / tx_usrp->get_tx_rate() * wave_table_len);
446 size_t index = 0;
447
448 // create a transmit streamer
449 // linearly map channels (index0 = channel0, index1 = channel1, ...)
450 uhd::stream_args_t stream_args("fc32", otw);
451 stream_args.channels = tx_channel_nums;
452 uhd::tx_streamer::sptr tx_stream = tx_usrp->get_tx_stream(stream_args);
453
454 // allocate a buffer which we re-use for each channel
455 if (spb == 0)
456 spb = tx_stream->get_max_num_samps() * 10;
457 std::vector<std::complex<float>> buff(spb);
458 int num_channels = tx_channel_nums.size();
459
460 // setup the metadata flags
461 uhd::tx_metadata_t md;
462 md.start_of_burst = true;
463 md.end_of_burst = false;
464 md.has_time_spec = true;
465 md.time_spec = uhd::time_spec_t(0.5); // give us 0.5 seconds to fill the tx buffers
466
467 // Check Ref and LO Lock detect
468 std::vector<std::string> tx_sensor_names, rx_sensor_names;
469 tx_sensor_names = tx_usrp->get_tx_sensor_names(0);
470 if (std::find(tx_sensor_names.begin(), tx_sensor_names.end(), "lo_locked")
471 != tx_sensor_names.end()) {
472 uhd::sensor_value_t lo_locked = tx_usrp->get_tx_sensor("lo_locked", 0);
473 std::cout << boost::format("Checking TX: %s ...") % lo_locked.to_pp_string()
474 << std::endl;
475 UHD_ASSERT_THROW(lo_locked.to_bool());
476 }
477 rx_sensor_names = rx_usrp->get_rx_sensor_names(0);
478 if (std::find(rx_sensor_names.begin(), rx_sensor_names.end(), "lo_locked")
479 != rx_sensor_names.end()) {
480 uhd::sensor_value_t lo_locked = rx_usrp->get_rx_sensor("lo_locked", 0);
481 std::cout << boost::format("Checking RX: %s ...") % lo_locked.to_pp_string()
482 << std::endl;
483 UHD_ASSERT_THROW(lo_locked.to_bool());
484 }
485
486 tx_sensor_names = tx_usrp->get_mboard_sensor_names(0);
487 if ((ref == "mimo")
488 and (std::find(tx_sensor_names.begin(), tx_sensor_names.end(), "mimo_locked")
489 != tx_sensor_names.end())) {
490 uhd::sensor_value_t mimo_locked = tx_usrp->get_mboard_sensor("mimo_locked", 0);
491 std::cout << boost::format("Checking TX: %s ...") % mimo_locked.to_pp_string()
492 << std::endl;
493 UHD_ASSERT_THROW(mimo_locked.to_bool());
494 }
495 if ((ref == "external")
496 and (std::find(tx_sensor_names.begin(), tx_sensor_names.end(), "ref_locked")
497 != tx_sensor_names.end())) {
498 uhd::sensor_value_t ref_locked = tx_usrp->get_mboard_sensor("ref_locked", 0);
499 std::cout << boost::format("Checking TX: %s ...") % ref_locked.to_pp_string()
500 << std::endl;
501 UHD_ASSERT_THROW(ref_locked.to_bool());
502 }
503
504 rx_sensor_names = rx_usrp->get_mboard_sensor_names(0);
505 if ((ref == "mimo")
506 and (std::find(rx_sensor_names.begin(), rx_sensor_names.end(), "mimo_locked")
507 != rx_sensor_names.end())) {
508 uhd::sensor_value_t mimo_locked = rx_usrp->get_mboard_sensor("mimo_locked", 0);
509 std::cout << boost::format("Checking RX: %s ...") % mimo_locked.to_pp_string()
510 << std::endl;
511 UHD_ASSERT_THROW(mimo_locked.to_bool());
512 }
513 if ((ref == "external")
514 and (std::find(rx_sensor_names.begin(), rx_sensor_names.end(), "ref_locked")
515 != rx_sensor_names.end())) {
516 uhd::sensor_value_t ref_locked = rx_usrp->get_mboard_sensor("ref_locked", 0);
517 std::cout << boost::format("Checking RX: %s ...") % ref_locked.to_pp_string()
518 << std::endl;
519 UHD_ASSERT_THROW(ref_locked.to_bool());
520 }
521
522 if (total_num_samps == 0) {
523 std::signal(SIGINT, &sig_int_handler);
524 std::cout << "Press Ctrl + C to stop streaming..." << std::endl;
525 }
526
527 // reset usrp time to prepare for transmit/receive
528 std::cout << boost::format("Setting device timestamp to 0...") << std::endl;
529 tx_usrp->set_time_now(uhd::time_spec_t(0.0));
530
531 // start transmit worker thread
532 std::thread transmit_thread([&]() {
533 transmit_worker(buff, wave_table, tx_stream, md, step, index, num_channels);
534 });
535
536 // recv to file
537 if (type == "double")
538 recv_to_file<std::complex<double>>(
539 rx_usrp, "fc64", otw, file, spb, total_num_samps, settling, rx_channel_nums);
540 else if (type == "float")
541 recv_to_file<std::complex<float>>(
542 rx_usrp, "fc32", otw, file, spb, total_num_samps, settling, rx_channel_nums);
543 else if (type == "short")
544 recv_to_file<std::complex<short>>(
545 rx_usrp, "sc16", otw, file, spb, total_num_samps, settling, rx_channel_nums);
546 else {
547 // clean up transmit worker
548 stop_signal_called = true;
549 transmit_thread.join();
550 throw std::runtime_error("Unknown type " + type);
551 }
552
553 // clean up transmit worker
554 stop_signal_called = true;
555 transmit_thread.join();
556
557 // finished
558 std::cout << std::endl << "Done!" << std::endl << std::endl;
559 return EXIT_SUCCESS;
560}
