sebastian
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CoffeePi


			
				
					
						
						
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<div class="title">crc.h</div>  </div>
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<a href="crc_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>&#160;<span class="comment">/**********************************************************************</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Filename:    crc.h</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * Description: A header file describing the various CRC standards.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * Notes:       </span></div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * Copyright (c) 2000 by Michael Barr.  This software is placed into</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * the public domain and may be used for any purpose.  However, this</span></div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * notice must not be changed or removed and no warranty is either</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * expressed or implied by its publication or distribution.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> **********************************************************************/</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#ifndef _crc_h</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#define _crc_h</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;</div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno"><a class="line" href="crc_8h.html#aa93f0eb578d23995850d61f7d61c55c1">   20</a></span>&#160;<span class="preprocessor">#define FALSE   0</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="crc_8h.html#aa8cecfc5c5c054d2875c03e77b7be15d">   21</a></span>&#160;<span class="preprocessor">#define TRUE    !FALSE</span></div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment"> * Select the CRC standard from the list that follows.</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"><a class="line" href="crc_8h.html#a491e419c18fbc5c7cb4a2cd901e31440">   26</a></span>&#160;<span class="preprocessor">#define CRC32</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#if defined(CRC_CCITT)</span></div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>  <a class="code" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a>;</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#define CRC_NAME            &quot;CRC-CCITT&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#define POLYNOMIAL          0x1021</span></div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#define INITIAL_REMAINDER   0xFFFF</span></div>
<div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#define FINAL_XOR_VALUE     0x0000</span></div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#define REFLECT_DATA        FALSE</span></div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#define REFLECT_REMAINDER   FALSE</span></div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;<span class="preprocessor">#define CHECK_VALUE         0x29B1</span></div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#elif defined(CRC16)</span></div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">short</span>  <a class="code" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a>;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#define CRC_NAME            &quot;CRC-16&quot;</span></div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">#define POLYNOMIAL          0x8005</span></div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#define INITIAL_REMAINDER   0x0000</span></div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="preprocessor">#define FINAL_XOR_VALUE     0x0000</span></div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#define REFLECT_DATA        TRUE</span></div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor">#define REFLECT_REMAINDER   TRUE</span></div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#define CHECK_VALUE         0xBB3D</span></div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="preprocessor">#elif defined(CRC32)</span></div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;</div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">   55</a></span>&#160;<span class="keyword">typedef</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>  <a class="code" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="line" href="crc_8h.html#ad679f457b8d23bfed7ccf1b9584e8514">   57</a></span>&#160;<span class="preprocessor">#define CRC_NAME            &quot;CRC-32&quot;</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="crc_8h.html#ae13d91fe6e514f0aa1caba701ef1ff92">   58</a></span>&#160;<span class="preprocessor">#define POLYNOMIAL          0x04C11DB7</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="crc_8h.html#acce5b79e1a8ad8ffe40fb9f7d63b2fdc">   59</a></span>&#160;<span class="preprocessor">#define INITIAL_REMAINDER   0xFFFFFFFF</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="crc_8h.html#a5e491822bb6a5bf7114dd453ab48891e">   60</a></span>&#160;<span class="preprocessor">#define FINAL_XOR_VALUE     0xFFFFFFFF</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"><a class="line" href="crc_8h.html#af6653e78d37b912d592ffc6e96eb7abb">   61</a></span>&#160;<span class="preprocessor">#define REFLECT_DATA        TRUE</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="crc_8h.html#a5aa89bef30ad5bd061deda3eef36e327">   62</a></span>&#160;<span class="preprocessor">#define REFLECT_REMAINDER   TRUE</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"><a class="line" href="crc_8h.html#aee81a10f43f9dc645ba69a7407c151d0">   63</a></span>&#160;<span class="preprocessor">#define CHECK_VALUE         0xCBF43926</span></div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="preprocessor">#error &quot;One of CRC_CCITT, CRC16, or CRC32 must be #define&#39;d.&quot;</span></div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;<span class="keywordtype">void</span>  <a class="code" href="crc_8h.html#a5a735798e6972adc694a5428dd7ccaf9">crcInit</a>(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;<a class="code" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a>   <a class="code" href="crc_8h.html#a027c2916f24b3daaf662408cc72026b1">crcSlow</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="keyword">const</span> message[], <span class="keywordtype">int</span> nBytes);</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<a class="code" href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a>   <a class="code" href="crc_8h.html#a31e9ca3a3979a4c1e5043f5bfa5befaf">crcFast</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> <span class="keyword">const</span> message[], <span class="keywordtype">int</span> nBytes);</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="preprocessor">#endif </span><span class="comment">/* _crc_h */</span><span class="preprocessor"></span></div>
<div class="ttc" id="crc_8h_html_a73364f0434186bc77eaa8e3b03a437be"><div class="ttname"><a href="crc_8h.html#a73364f0434186bc77eaa8e3b03a437be">crc</a></div><div class="ttdeci">unsigned long crc</div><div class="ttdef"><b>Definition:</b> crc.h:55</div></div>
<div class="ttc" id="crc_8h_html_a027c2916f24b3daaf662408cc72026b1"><div class="ttname"><a href="crc_8h.html#a027c2916f24b3daaf662408cc72026b1">crcSlow</a></div><div class="ttdeci">crc crcSlow(unsigned char const message[], int nBytes)</div><div class="ttdef"><b>Definition:</b> crc.cpp:95</div></div>
<div class="ttc" id="crc_8h_html_a31e9ca3a3979a4c1e5043f5bfa5befaf"><div class="ttname"><a href="crc_8h.html#a31e9ca3a3979a4c1e5043f5bfa5befaf">crcFast</a></div><div class="ttdeci">crc crcFast(unsigned char const message[], int nBytes)</div><div class="ttdef"><b>Definition:</b> crc.cpp:212</div></div>
<div class="ttc" id="crc_8h_html_a5a735798e6972adc694a5428dd7ccaf9"><div class="ttname"><a href="crc_8h.html#a5a735798e6972adc694a5428dd7ccaf9">crcInit</a></div><div class="ttdeci">void crcInit(void)</div><div class="ttdef"><b>Definition:</b> crc.cpp:156</div></div>
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