GNU Radio Manual and C++ API Reference 3.8.5.0
The Free & Open Software Radio Ecosystem
 
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glfsr.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_DIGITAL_GLFSR_H
24#define INCLUDED_DIGITAL_GLFSR_H
25
27#include <boost/cstdint.hpp>
28
29namespace gr {
30namespace digital {
31
32/*!
33 * \brief Galois Linear Feedback Shift Register using specified polynomial mask
34 * \ingroup waveform_generators_blk
35 *
36 * \details
37 * Generates a maximal length pseudo-random sequence of length 2^degree-1
38 */
40{
41private:
42 uint32_t d_shift_register;
43 uint32_t d_mask;
44
45public:
46 glfsr(uint32_t mask, uint32_t seed)
47 {
48 d_shift_register = seed;
49 d_mask = mask;
50 }
52
53 static uint32_t glfsr_mask(unsigned int degree);
54
55 uint8_t next_bit();
56
57 uint32_t mask() const { return d_mask; }
58};
59
60} /* namespace digital */
61} /* namespace gr */
62
63#endif /* INCLUDED_DIGITAL_GLFSR_H */
Galois Linear Feedback Shift Register using specified polynomial mask.
Definition glfsr.h:40
static uint32_t glfsr_mask(unsigned int degree)
uint32_t mask() const
Definition glfsr.h:57
glfsr(uint32_t mask, uint32_t seed)
Definition glfsr.h:46
#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