GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
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glfsr_source_f.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2007,2012,2016 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23#ifndef INCLUDED_GR_GLFSR_SOURCE_F_H
24#define INCLUDED_GR_GLFSR_SOURCE_F_H
25
27#include <gnuradio/sync_block.h>
28
29namespace gr {
30namespace digital {
31
32/*!
33 * \brief Galois LFSR pseudo-random source generating float outputs -1.0 - 1.0.
34 * \ingroup waveform_generators_blk
35 */
37{
38public:
39 // gr::digital::glfsr_source_f::sptr
40 typedef boost::shared_ptr<glfsr_source_f> sptr;
41
42 /*!
43 * Make a Galois LFSR pseudo-random source block.
44 *
45 * \param degree Degree of shift register must be in [1, 32]. If mask
46 * is 0, the degree determines a default mask (see
47 * digital_impl_glfsr.cc for the mapping).
48 * \param repeat Set to repeat sequence.
49 * \param mask Allows a user-defined bit mask for indexes of the shift
50 * register to feed back.
51 * \param seed Initial setting for values in shift register.
52 */
53 static sptr
54 make(unsigned int degree, bool repeat = true, uint32_t mask = 0, uint32_t seed = 1);
55
56 virtual uint32_t period() const = 0;
57 virtual uint32_t mask() const = 0;
58};
59
60} /* namespace digital */
61} /* namespace gr */
62
63#endif /* INCLUDED_GR_GLFSR_SOURCE_F_H */
Galois LFSR pseudo-random source generating float outputs -1.0 - 1.0.
Definition glfsr_source_f.h:37
virtual uint32_t mask() const =0
static sptr make(unsigned int degree, bool repeat=true, uint32_t mask=0, uint32_t seed=1)
boost::shared_ptr< glfsr_source_f > sptr
Definition glfsr_source_f.h:40
virtual uint32_t period() const =0
synchronous 1:1 input to output with history
Definition sync_block.h:38
#define DIGITAL_API
Definition gr-digital/include/gnuradio/digital/api.h:30
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46