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simple_framer_sync.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2005,2012 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,
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21  */
22 
23 #ifndef INCLUDED_GR_SIMPLE_FRAMER_SYNC_H
24 #define INCLUDED_GR_SIMPLE_FRAMER_SYNC_H
25 
26 namespace gr {
27  namespace digital {
28 
29  /*!
30  * Here are a couple of maximum length sequences (m-sequences)
31  * that were generated by the the "mseq" matlab/octave code
32  * downloaded from: <a
33  * href="http://www.mathworks.com/matlabcentral/fileexchange/990">http://www.mathworks.com/matlabcentral/fileexchange/990</a>
34  *
35  * <pre>
36  * 31-bit m-sequence:
37  * 0110100100001010111011000111110
38  * 0x690AEC76 (padded on right with a zero)
39  *
40  * 63-bit m-sequence:
41  * 101011001101110110100100111000101111001010001100001000001111110
42  * 0xACDDA4E2F28C20FC (padded on right with a zero)
43  * </pre>
44  */
45  static const unsigned long long GRSF_SYNC = 0xacdda4e2f28c20fcULL;
46 
47  static const int GRSF_BITS_PER_BYTE = 8;
48  static const int GRSF_SYNC_OVERHEAD = sizeof(GRSF_SYNC);
49  static const int GRSF_PAYLOAD_OVERHEAD = 1; // 1 byte seqno
50  static const int GRSF_TAIL_PAD = 1; // one byte trailing padding
51  static const int GRSF_OVERHEAD = GRSF_SYNC_OVERHEAD + GRSF_PAYLOAD_OVERHEAD + GRSF_TAIL_PAD;
52 
53  } /* namespace digital */
54 } /* namespace gr */
55 
56 #endif /* INCLUDED_GR_SIMPLE_FRAMER_SYNC_H */
static const unsigned long long GRSF_SYNC
Definition: simple_framer_sync.h:45
static const int GRSF_OVERHEAD
Definition: simple_framer_sync.h:51
Include this header to use the message passing features.
Definition: logger.h:131
static const int GRSF_SYNC_OVERHEAD
Definition: simple_framer_sync.h:48
static const int GRSF_BITS_PER_BYTE
Definition: simple_framer_sync.h:47
static const int GRSF_TAIL_PAD
Definition: simple_framer_sync.h:50
static const int GRSF_PAYLOAD_OVERHEAD
Definition: simple_framer_sync.h:49