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<h1>pager_flex_sync.h</h1>  </div>
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<a href="pager__flex__sync_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> * Copyright 2006 Free Software Foundation, Inc.</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * This file is part of GNU Radio</span>
<a name="l00005"></a>00005 <span class="comment"> * </span>
<a name="l00006"></a>00006 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span>
<a name="l00007"></a>00007 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00008"></a>00008 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00009"></a>00009 <span class="comment"> * any later version.</span>
<a name="l00010"></a>00010 <span class="comment"> * </span>
<a name="l00011"></a>00011 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span>
<a name="l00012"></a>00012 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00014"></a>00014 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"> * </span>
<a name="l00016"></a>00016 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> * along with GNU Radio; see the file COPYING.  If not, write to</span>
<a name="l00018"></a>00018 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span>
<a name="l00019"></a>00019 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00020"></a>00020 <span class="comment"> */</span>
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 <span class="preprocessor">#ifndef INCLUDED_PAGER_FLEX_SYNC_H</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_PAGER_FLEX_SYNC_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span>
<a name="l00025"></a>00025 <span class="preprocessor">#include &lt;gr_block.h&gt;</span>
<a name="l00026"></a>00026 
<a name="l00027"></a>00027 <span class="keyword">class </span><a class="code" href="classpager__flex__sync.html" title="flex sync description">pager_flex_sync</a>;
<a name="l00028"></a>00028 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr&lt;pager_flex_sync&gt;</a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">pager_flex_sync_sptr</a>;
<a name="l00029"></a><a class="code" href="pager__flex__sync_8h.html#aec8352e70df9b254fb74b9634edc4ae1">00029</a> <span class="keyword">typedef</span> <a class="code" href="classstd_1_1vector.html">std::vector&lt;gr_int64&gt;</a> <a class="code" href="pager__flex__sync_8h.html#aec8352e70df9b254fb74b9634edc4ae1">gr_int64_vector</a>;
<a name="l00030"></a>00030 
<a name="l00031"></a>00031 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">pager_flex_sync_sptr</a> <a class="code" href="pager__flex__sync_8h.html#a0e796223e962581ce2522a97b5ab7d08">pager_make_flex_sync</a>();
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment">/*!</span>
<a name="l00034"></a>00034 <span class="comment"> * \brief flex sync description</span>
<a name="l00035"></a>00035 <span class="comment"> * \ingroup pager_blk</span>
<a name="l00036"></a>00036 <span class="comment"> */</span>
<a name="l00037"></a>00037 
<a name="l00038"></a><a class="code" href="classpager__flex__sync.html">00038</a> <span class="keyword">class </span><a class="code" href="classpager__flex__sync.html" title="flex sync description">pager_flex_sync</a> : <span class="keyword">public</span> <a class="code" href="classgr__block.html" title="The abstract base class for all &amp;#39;terminal&amp;#39; processing blocks.A signal processing flow is cons...">gr_block</a>
<a name="l00039"></a>00039 {
<a name="l00040"></a>00040 <span class="keyword">private</span>:
<a name="l00041"></a>00041     <span class="comment">// Constructors</span>
<a name="l00042"></a>00042     <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">pager_flex_sync_sptr</a> <a class="code" href="classpager__flex__sync.html#a0e796223e962581ce2522a97b5ab7d08">pager_make_flex_sync</a>();
<a name="l00043"></a>00043     <a class="code" href="classpager__flex__sync.html" title="flex sync description">pager_flex_sync</a>();
<a name="l00044"></a>00044    
<a name="l00045"></a>00045     <span class="comment">// State machine transitions</span>
<a name="l00046"></a>00046     <span class="keywordtype">void</span> enter_idle();
<a name="l00047"></a>00047     <span class="keywordtype">void</span> enter_syncing();
<a name="l00048"></a>00048     <span class="keywordtype">void</span> enter_sync1();
<a name="l00049"></a>00049     <span class="keywordtype">void</span> enter_sync2();
<a name="l00050"></a>00050     <span class="keywordtype">void</span> enter_data();
<a name="l00051"></a>00051 
<a name="l00052"></a>00052     <span class="keywordtype">int</span> index_avg(<span class="keywordtype">int</span> <a class="code" href="classgr__block.html#a49ea94a86f3199f23563bb837633ea1f" title="Called to enable drivers, etc for i/o devices.">start</a>, <span class="keywordtype">int</span> end);
<a name="l00053"></a>00053     <span class="keywordtype">bool</span> test_sync(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sym);
<a name="l00054"></a>00054     <span class="keywordtype">void</span> parse_fiw();
<a name="l00055"></a>00055     <span class="keywordtype">int</span> output_symbol(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sym);    
<a name="l00056"></a>00056     
<a name="l00057"></a>00057     <span class="comment">// Simple state machine</span>
<a name="l00058"></a>00058     <span class="keyword">enum</span> state_t { ST_IDLE, ST_SYNCING, ST_SYNC1, ST_SYNC2, ST_DATA };
<a name="l00059"></a>00059     state_t d_state;     
<a name="l00060"></a>00060 
<a name="l00061"></a>00061     <span class="keywordtype">int</span> d_index;    <span class="comment">// Index into current baud</span>
<a name="l00062"></a>00062     <span class="keywordtype">int</span> d_start;    <span class="comment">// Start of good sync </span>
<a name="l00063"></a>00063     <span class="keywordtype">int</span> d_center;   <span class="comment">// Center of bit</span>
<a name="l00064"></a>00064     <span class="keywordtype">int</span> d_end;      <span class="comment">// End of good sync</span>
<a name="l00065"></a>00065     <span class="keywordtype">int</span> d_count;    <span class="comment">// Bit counter</span>
<a name="l00066"></a>00066 
<a name="l00067"></a>00067     <span class="keywordtype">int</span> d_mode;     <span class="comment">// Current packet mode</span>
<a name="l00068"></a>00068     <span class="keywordtype">int</span> d_baudrate; <span class="comment">// Current decoding baud rate</span>
<a name="l00069"></a>00069     <span class="keywordtype">int</span> d_levels;   <span class="comment">// Current decoding levels</span>
<a name="l00070"></a>00070     <span class="keywordtype">int</span> d_spb;      <span class="comment">// Current samples per baud</span>
<a name="l00071"></a>00071     <span class="keywordtype">bool</span> d_hibit;   <span class="comment">// Alternating bit indicator for 3200 bps</span>
<a name="l00072"></a>00072     
<a name="l00073"></a>00073     <a class="code" href="gr__types_8h.html#ac07cda22882f844c0aa1633d49f1c144">gr_int32</a> d_fiw; <span class="comment">// Frame information word</span>
<a name="l00074"></a>00074     <span class="keywordtype">int</span> d_frame;    <span class="comment">// Current FLEX frame</span>
<a name="l00075"></a>00075     <span class="keywordtype">int</span> d_cycle;    <span class="comment">// Current FLEX cycle</span>
<a name="l00076"></a>00076     <span class="keywordtype">int</span> d_unknown1;
<a name="l00077"></a>00077     <span class="keywordtype">int</span> d_unknown2;
<a name="l00078"></a>00078 
<a name="l00079"></a>00079     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_a;
<a name="l00080"></a>00080     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_b;
<a name="l00081"></a>00081     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_c;
<a name="l00082"></a>00082     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_d;
<a name="l00083"></a>00083     
<a name="l00084"></a>00084     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_a;  
<a name="l00085"></a>00085     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_b;
<a name="l00086"></a>00086     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_c;
<a name="l00087"></a>00087     <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_d;
<a name="l00088"></a>00088     
<a name="l00089"></a>00089     <a class="code" href="classstd_1_1vector.html">gr_int64_vector</a> d_sync; <span class="comment">// Trial synchronizers</span>
<a name="l00090"></a>00090 
<a name="l00091"></a>00091 <span class="keyword">public</span>:
<a name="l00092"></a>00092     <span class="keywordtype">void</span> <a class="code" href="classpager__flex__sync.html#a0276435cb29d29f3e6cddc7d97935ed1" title="Estimate input requirements given output request.">forecast</a>(<span class="keywordtype">int</span> noutput_items, <a class="code" href="classstd_1_1vector.html">gr_vector_int</a> &amp;inputs_required);
<a name="l00093"></a>00093 
<a name="l00094"></a>00094     <span class="keywordtype">int</span> <a class="code" href="classpager__flex__sync.html#ae3772cdb03023b695e4ca62df6b8e67d" title="compute output items from input items">general_work</a>(<span class="keywordtype">int</span> noutput_items,
<a name="l00095"></a>00095                      <a class="code" href="classstd_1_1vector.html">gr_vector_int</a> &amp;ninput_items,
<a name="l00096"></a>00096                      <a class="code" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &amp;input_items, 
<a name="l00097"></a>00097                      <a class="code" href="classstd_1_1vector.html">gr_vector_void_star</a> &amp;output_items);
<a name="l00098"></a>00098 };
<a name="l00099"></a>00099 
<a name="l00100"></a>00100 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_PAGER_FLEX_SYNC_H */</span>
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