GNU Radio Manual and C++ API Reference 3.8.5.0
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pll_freqdet_cf.h
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1/* -*- c++ -*- */
2/*
3 * Copyright 2004,2011 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_ANALOG_PLL_FREQDET_CF_H
24#define INCLUDED_ANALOG_PLL_FREQDET_CF_H
25
26#include <gnuradio/analog/api.h>
28#include <gnuradio/sync_block.h>
29
30namespace gr {
31namespace analog {
32
33/*!
34 * \brief Implements a PLL which locks to the input frequency and outputs
35 * an estimate of that frequency. Useful for FM Demod.
36 * \ingroup synchronizers_blk
37 *
38 * \details
39 * Input stream 0: complex
40 * Output stream 0: float
41 *
42 * This PLL locks onto a [possibly noisy] reference carrier on
43 * the input and outputs an estimate of that frequency in radians per sample.
44 * All settings max_freq and min_freq are in terms of radians per sample,
45 * NOT HERTZ. The loop bandwidth determines the lock range and should be set
46 * around pi/200 -- 2pi/100.
47 * \sa pll_refout_cc, pll_carriertracking_cc
48 */
49class ANALOG_API pll_freqdet_cf : virtual public sync_block,
50 virtual public blocks::control_loop
51{
52public:
53 // gr::analog::pll_freqdet_cf::sptr
54 typedef boost::shared_ptr<pll_freqdet_cf> sptr;
55
56 /* \brief Make PLL block that outputs the tracked signal's frequency.
57 *
58 * \param loop_bw: control loop's bandwidth parameter.
59 * \param max_freq: maximum (normalized) frequency PLL will lock to.
60 * \param min_freq: minimum (normalized) frequency PLL will lock to.
61 */
62 static sptr make(float loop_bw, float max_freq, float min_freq);
63
64 virtual void set_loop_bandwidth(float bw) = 0;
65 virtual void set_damping_factor(float df) = 0;
66 virtual void set_alpha(float alpha) = 0;
67 virtual void set_beta(float beta) = 0;
68 virtual void set_frequency(float freq) = 0;
69 virtual void set_phase(float phase) = 0;
70 virtual void set_min_freq(float freq) = 0;
71 virtual void set_max_freq(float freq) = 0;
72
73 virtual float get_loop_bandwidth() const = 0;
74 virtual float get_damping_factor() const = 0;
75 virtual float get_alpha() const = 0;
76 virtual float get_beta() const = 0;
77 virtual float get_frequency() const = 0;
78 virtual float get_phase() const = 0;
79 virtual float get_min_freq() const = 0;
80 virtual float get_max_freq() const = 0;
81};
82
83} /* namespace analog */
84} /* namespace gr */
85
86#endif /* INCLUDED_ANALOG_PLL_FREQDET_CF_H */
Implements a PLL which locks to the input frequency and outputs an estimate of that frequency....
Definition pll_freqdet_cf.h:51
virtual void set_alpha(float alpha)=0
virtual void set_frequency(float freq)=0
virtual float get_min_freq() const =0
virtual void set_damping_factor(float df)=0
virtual void set_min_freq(float freq)=0
virtual float get_max_freq() const =0
virtual float get_alpha() const =0
virtual float get_damping_factor() const =0
virtual float get_beta() const =0
virtual float get_loop_bandwidth() const =0
virtual float get_frequency() const =0
virtual void set_max_freq(float freq)=0
static sptr make(float loop_bw, float max_freq, float min_freq)
virtual void set_phase(float phase)=0
virtual float get_phase() const =0
virtual void set_loop_bandwidth(float bw)=0
Set the loop bandwidth.
boost::shared_ptr< pll_freqdet_cf > sptr
Definition pll_freqdet_cf.h:54
virtual void set_beta(float beta)=0
A second-order control loop implementation class.
Definition control_loop.h:62
synchronous 1:1 input to output with history
Definition sync_block.h:38
#define ANALOG_API
Definition gr-analog/include/gnuradio/analog/api.h:30
GNU Radio logging wrapper for log4cpp library (C++ port of log4j)
Definition basic_block.h:46