1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
|
//
// Copyright 2010-2012,2014 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/types/tune_request.hpp>
#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)")
("int-n", "tune USRP with integer-N tuning")
;
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;
uhd::tune_request_t tune_request(freq);
if(vm.count("int-n")) tune_request.args = uhd::device_addr_t("mode_n=integer");
usrp->set_rx_freq(tune_request);
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;
rx_stream->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*sizeof(buff.front())));
num_acc_samps += num_rx_samps;
} done_loop:
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return EXIT_SUCCESS;
}
|
