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<a href="pager__flex__sync_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright 2006 Free Software Foundation, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * This file is part of GNU Radio</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with GNU Radio; see the file COPYING. If not, write to</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * Boston, MA 02110-1301, USA.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#ifndef INCLUDED_PAGER_FLEX_SYNC_H</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_PAGER_FLEX_SYNC_H</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <<a class="code" href="pager__api_8h.html">pager_api.h</a>></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <<a class="code" href="gr__block_8h.html">gr_block.h</a>></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">class </span><a class="code" href="classpager__flex__sync.html" title="flex sync description">pager_flex_sync</a>;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<pager_flex_sync></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">pager_flex_sync_sptr</a>;</div>
<div class="line"><a name="l00030"></a><span class="lineno"><a class="code" href="pager__flex__sync_8h.html#aec8352e70df9b254fb74b9634edc4ae1"> 30</a></span> <span class="keyword">typedef</span> std::vector<gr_int64> <a class="code" href="pager__flex__sync_8h.html#aec8352e70df9b254fb74b9634edc4ae1">gr_int64_vector</a>;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <a class="code" href="pager__api_8h.html#a0466fe431406887375cfa789a185150e">PAGER_API</a> <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#a4178399f54c3fc565ff542e1dd2d7aec">pager_make_flex_sync</a>();</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * \brief flex sync description</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * \ingroup pager_blk</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="classpager__flex__sync.html"> 39</a></span> <span class="keyword">class </span><a class="code" href="pager__api_8h.html#a0466fe431406887375cfa789a185150e">PAGER_API</a> <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 'terminal' processing blocks.A signal processing flow is constructed ...">gr_block</a></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">// Constructors</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">friend</span> <a class="code" href="pager__api_8h.html#a0466fe431406887375cfa789a185150e">PAGER_API</a> <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#a4178399f54c3fc565ff542e1dd2d7aec">pager_make_flex_sync</a>();</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <a class="code" href="classpager__flex__sync.html" title="flex sync description">pager_flex_sync</a>();</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// State machine transitions</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordtype">void</span> enter_idle();</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordtype">void</span> enter_syncing();</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">void</span> enter_sync1();</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">void</span> enter_sync2();</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">void</span> enter_data();</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">int</span> index_avg(<span class="keywordtype">int</span> start, <span class="keywordtype">int</span> end);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">bool</span> test_sync(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sym);</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> parse_fiw();</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">int</span> output_symbol(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> sym);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// Simple state machine</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">enum</span> state_t { ST_IDLE, ST_SYNCING, ST_SYNC1, ST_SYNC2, ST_DATA };</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  state_t d_state;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordtype">int</span> d_index; <span class="comment">// Index into current baud</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">int</span> d_start; <span class="comment">// Start of good sync</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">int</span> d_center; <span class="comment">// Center of bit</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordtype">int</span> d_end; <span class="comment">// End of good sync</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">int</span> d_count; <span class="comment">// Bit counter</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">int</span> d_mode; <span class="comment">// Current packet mode</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">int</span> d_baudrate; <span class="comment">// Current decoding baud rate</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">int</span> d_levels; <span class="comment">// Current decoding levels</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordtype">int</span> d_spb; <span class="comment">// Current samples per baud</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">bool</span> d_hibit; <span class="comment">// Alternating bit indicator for 3200 bps</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <a class="code" href="gr__types_8h.html#ac07cda22882f844c0aa1633d49f1c144">gr_int32</a> d_fiw; <span class="comment">// Frame information word</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">int</span> d_frame; <span class="comment">// Current FLEX frame</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordtype">int</span> d_cycle; <span class="comment">// Current FLEX cycle</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordtype">int</span> d_unknown1;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">int</span> d_unknown2;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_a;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_b;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_c;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> d_bit_d;</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_a;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_b;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_c;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *d_phase_d;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="pager__flex__sync_8h.html#aec8352e70df9b254fb74b9634edc4ae1">gr_int64_vector</a> d_sync; <span class="comment">// Trial synchronizers</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">void</span> <a class="code" href="classgr__block.html#aa1f2518b5c97126bb015adb9e2027f4a" title="Estimate input requirements given output request.">forecast</a>(<span class="keywordtype">int</span> noutput_items, <a class="code" href="gr__types_8h.html#ab02d0a829d67d39e3ac3163016d3a8be">gr_vector_int</a> &inputs_required);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">int</span> <a class="code" href="classgr__block.html#adf59080d10f322e3816b7ac8f7cb2a7c" title="compute output items from input items">general_work</a>(<span class="keywordtype">int</span> noutput_items,</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <a class="code" href="gr__types_8h.html#ab02d0a829d67d39e3ac3163016d3a8be">gr_vector_int</a> &ninput_items,</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <a class="code" href="gr__types_8h.html#a9852a3d906d823cb70eb9c29e7f2a43d">gr_vector_const_void_star</a> &input_items,</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="gr__types_8h.html#acd3f499576e769966ea44554b359d949">gr_vector_void_star</a> &output_items);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> };</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_PAGER_FLEX_SYNC_H */</span><span class="preprocessor"></span></div>
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