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
|
//
// 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 <boost/thread.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;
size_t total_num_samps;
double rate, freq, gain;
//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")
("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")
;
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;
}
//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 the rx sample rate
std::cout << boost::format("Setting RX Rate: %f Msps...") % (rate/1e6) << std::endl;
sdev->set_rx_rate(rate);
std::cout << boost::format("Actual RX Rate: %f Msps...") % (sdev->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;
sdev->set_rx_freq(freq);
std::cout << boost::format("Actual RX Freq: %f Mhz...") % (sdev->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;
sdev->set_rx_gain(gain);
std::cout << boost::format("Actual RX Gain: %f dB...") % sdev->get_rx_gain() << std::endl << std::endl;
boost::this_thread::sleep(boost::posix_time::seconds(1)); //allow for some setup time
std::cout << "LO Locked = " << sdev->get_rx_lo_locked() << std::endl;
//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;
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>));
num_acc_samps += num_rx_samps;
} done_loop:
outfile.close();
//finished
std::cout << std::endl << "Done!" << std::endl << std::endl;
return 0;
}
|
