GNU Radio Manual and C++ API Reference  3.7.9.2
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GrAtscFPLL.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2002 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 
24 #ifndef _GRATSCFPLL_H_
25 #define _GRATSCFPLL_H_
26 
27 #include <gnuradio/blocks/nco.h>
28 #include <gnuradio/filter/iir.h>
30 #include <gnuradio/analog/agc.h>
31 #include <VrSigProc.h>
32 #include <stdio.h>
34 
35 /*!
36  * \brief ATSC FPLL (2nd Version)
37  *
38  * Used as follows:
39  * float float
40  * A/D --> GrFIRfilterFFF ----> GrAtscFPLL ---->
41  *
42  * We use GrFIRfilterFFF to bandpass filter the signal of interest.
43  *
44  * This class accepts a single real input and produces a single real output
45  */
46 
47 class GrAtscFPLL : public VrSigProc {
48  protected:
49 
50  typedef float iType;
51  typedef float oType;
52 
53  public:
54 
55  GrAtscFPLL (double a_initial_freq);
56  virtual ~GrAtscFPLL () {}
57 
58  virtual const char *name () { return "GrAtscFPLL"; }
59 
60  virtual void initialize ();
61 
62  virtual int work (VrSampleRange output, void *o[],
63  VrSampleRange inputs[], void *i[]);
64 
65 
66  // diagnostic routines
67  void set_initial_phase (double phase) { initial_phase = phase; } // radians
68  void set_no_update (bool a_no_update) { debug_no_update = a_no_update; }
69 
70 
71  protected:
72 
73  double initial_freq;
74  double initial_phase;
76  gr_nco<float,float> nco;
77  gr_agc agc; // automatic gain control
78  gr_single_pole_iir<float,float,float> afci;
79  gr_single_pole_iir<float,float,float> afcq;
80 
81 #ifdef _FPLL_DIAG_OUTPUT_
82  FILE *fp;
83 #endif
84 
85 };
86 
87 
88 #endif // _GRATSCFPLL_H_
void set_initial_phase(double phase)
Definition: GrAtscFPLL.h:67
ATSC FPLL (2nd Version)
Definition: GrAtscFPLL.h:47
virtual ~GrAtscFPLL()
Definition: GrAtscFPLL.h:56
gr_single_pole_iir< float, float, float > afci
Definition: GrAtscFPLL.h:78
gr_nco< float, float > nco
Definition: GrAtscFPLL.h:76
gr_agc agc
Definition: GrAtscFPLL.h:77
virtual const char * name()
Definition: GrAtscFPLL.h:58
float oType
Definition: GrAtscFPLL.h:51
virtual int work(VrSampleRange output, void *o[], VrSampleRange inputs[], void *i[])
void set_no_update(bool a_no_update)
Definition: GrAtscFPLL.h:68
double initial_freq
Definition: GrAtscFPLL.h:73
double initial_phase
Definition: GrAtscFPLL.h:74
GrAtscFPLL(double a_initial_freq)
float iType
Definition: GrAtscFPLL.h:50
gr_single_pole_iir< float, float, float > afcq
Definition: GrAtscFPLL.h:79
bool debug_no_update
Definition: GrAtscFPLL.h:75
virtual void initialize()