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/*
* Copyright 2008 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include <usrp_siggen.h>
#include <gr_io_signature.h>
#include <gr_head.h>
#include <gr_noise_type.h>
#include <stdexcept>
#include <iostream>
#include <cstdio>
#include <boost/program_options.hpp>
namespace po = boost::program_options;
usrp_subdev_spec
str_to_subdev(std::string spec_str)
{
usrp_subdev_spec spec;
if(spec_str == "A" || spec_str == "A:0" || spec_str == "0:0") {
spec.side = 0;
spec.subdev = 0;
}
else if(spec_str == "A:1" || spec_str == "0:1") {
spec.side = 0;
spec.subdev = 1;
}
else if(spec_str == "B" || spec_str == "B:0" || spec_str == "1:0") {
spec.side = 1;
spec.subdev = 0;
}
else if(spec_str == "B:1" || spec_str == "1:1") {
spec.side = 1;
spec.subdev = 1;
}
else {
throw std::range_error("Incorrect subdevice specifications.\n");
}
return spec;
}
// Shared pointer constructor
usrp_siggen_sptr make_usrp_siggen(int which, usrp_subdev_spec spec,
double rf_freq, int interp, double wfreq,
int waveform, float amp, float gain,
float offset, long long nsamples)
{
return gnuradio::get_initial_sptr(new usrp_siggen(which, spec,
rf_freq, interp, wfreq,
waveform, amp, gain,
offset, nsamples));
}
// Hierarchical block constructor, with no inputs or outputs
usrp_siggen::usrp_siggen(int which, usrp_subdev_spec spec,
double rf_freq, int interp, double wfreq,
int waveform, float amp, float gain,
float offset, long long nsamples)
: gr_top_block("usrp_siggen")
{
usrp_sink_c_sptr usrp = usrp_make_sink_c(which, interp);
db_base_sptr subdev = usrp->selected_subdev(spec);
printf("Subdevice name is %s\n", subdev->name().c_str());
printf("Subdevice freq range: (%g, %g)\n",
subdev->freq_min(), subdev->freq_max());
unsigned int mux = usrp->determine_tx_mux_value(spec);
printf("mux: %#08x\n", mux);
usrp->set_mux(mux);
if(gain == -1) {
gain = subdev->gain_max();
}
subdev->set_gain(gain);
float input_rate = usrp->dac_freq() / usrp->interp_rate();
printf("baseband rate: %g\n", input_rate);
usrp_tune_result r;
double target_freq = rf_freq;
bool ok = usrp->tune(subdev->which(), subdev, target_freq, &r);
if(!ok) {
throw std::runtime_error("Could not set frequency.");
}
subdev->set_enable(true);
printf("target_freq: %f\n", target_freq);
printf("ok: %s\n", ok ? "true" : "false");
printf("r.baseband_freq: %f\n", r.baseband_freq);
printf("r.dxc_freq: %f\n", r.dxc_freq);
printf("r.residual_freq: %f\n", r.residual_freq);
printf("r.inverted: %d\n", r.inverted);
/* Set up the signal source */
siggen = gr_make_sig_source_c(input_rate, GR_SIN_WAVE, wfreq, amp);
noisegen = gr_make_noise_source_c (GR_UNIFORM, amp);
if(waveform == GR_SIN_WAVE || waveform == GR_CONST_WAVE) {
source = siggen;
}
else if(waveform == GR_UNIFORM || waveform == GR_GAUSSIAN) {
source = noisegen;
}
else {
throw std::range_error("Unknown waveform type.\n");
}
siggen->set_waveform((gr_waveform_t)waveform);
if (nsamples > 0){
gr_block_sptr head = gr_make_head(sizeof(gr_complex), nsamples);
connect(source, 0, head, 0);
connect(head, 0, usrp, 0);
}
else {
connect(source, 0, usrp, 0);
}
}
int main(int argc, char *argv[])
{
int which = 0; // specify which USRP board
usrp_subdev_spec spec(0,0); // specify the d'board side
int interp = 128; // set the interpolation rate
double rf_freq = 0; // set the frequency
double wfreq = 100e3; // set the waveform frequency
float amp = 5; // set the amplitude of the output
float gain = -1; // set the d'board PGA gain
float offset = 0; // set waveform offset
int waveform;
double nsamples = 0; // set the number of samples to transmit (0 -> inf)
po::options_description cmdconfig("Program options");
cmdconfig.add_options()
("help,h", "produce help message")
("which,W", po::value<int>(&which), "select which USRP board")
("tx-subdev-spec,T", po::value<std::string>(), "select USRP Tx side A or B")
("rf-freq,f", po::value<double>(), "set RF center frequency to FREQ")
("interp,i", po::value<int>(&interp), "set fgpa interpolation rate to INTERP")
("sine", "generate a complex sinusoid [default]")
("const", "generate a constant output")
("gaussian", "generate Gaussian random output")
("uniform", "generate Uniform random output")
("waveform-freq,w", po::value<double>(&wfreq), "set waveform frequency to FREQ")
("amplitude,a", po::value<float>(&), "set amplitude")
("gain,g", po::value<float>(&gain), "set output gain to GAIN")
("offset,o", po::value<float>(&offset), "set waveform offset to OFFSET")
("nsamples,N", po::value<double>(&nsamples), "number of samples to send [default=+inf]")
;
po::variables_map vm;
po::store(po::command_line_parser(argc, argv).
options(cmdconfig).run(), vm);
po::notify(vm);
if (vm.count("help")) {
std::cout << cmdconfig << "\n";
return 1;
}
if(vm.count("rf-freq")) {
rf_freq = vm["rf-freq"].as<double>();
}
else {
fprintf(stderr, "You must specify a frequency.\n");
return -1;
}
if(vm.count("tx-subdev-spec")) {
std::string s = vm["tx-subdev-spec"].as<std::string>();
spec = str_to_subdev(s);
}
if(vm.count("sine")) {
waveform = GR_SIN_WAVE;
}
else if(vm.count("const")) {
waveform = GR_CONST_WAVE;
}
else if(vm.count("gaussian")) {
waveform = GR_GAUSSIAN;
}
else if(vm.count("uniform")) {
waveform = GR_UNIFORM;
}
else {
waveform = GR_SIN_WAVE;
}
printf("which: %d\n", which);
printf("interp: %d\n", interp);
printf("rf_freq: %g\n", rf_freq);
printf("amp: %f\n", amp);
printf("nsamples: %g\n", nsamples);
usrp_siggen_sptr top_block = make_usrp_siggen(which, spec, rf_freq,
interp, wfreq, waveform,
amp, gain, offset, (long long) nsamples);
top_block->run();
return 0;
}
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