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<div class="title">ChaseLEDs.cpp</div> </div>
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<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"> * Copyright (C) 2012 Southern Storm Software, Pty Ltd.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * Permission is hereby granted, free of charge, to any person obtaining a</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * copy of this software and associated documentation files (the &quot;Software&quot;),</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to deal in the Software without restriction, including without limitation</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the rights to use, copy, modify, merge, publish, distribute, sublicense,</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * and/or sell copies of the Software, and to permit persons to whom the</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * Software is furnished to do so, subject to the following conditions:</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * The above copyright notice and this permission notice shall be included</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * in all copies or substantial portions of the Software.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot;, WITHOUT WARRANTY OF ANY KIND, EXPRESS</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="comment"> * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="comment"> * DEALINGS IN THE SOFTWARE.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment"> */</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="preprocessor">#include &quot;ChaseLEDs.h&quot;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;<span class="preprocessor">#if defined(ARDUINO) &amp;&amp; ARDUINO &gt;= 100</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;Arduino.h&gt;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="preprocessor">#else</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="preprocessor"></span><span class="preprocessor">#include &lt;WProgram.h&gt;</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="preprocessor"></span></div>
<div class="line"><a name="l00071"></a><span class="lineno"><a class="line" href="classChaseLEDs.html#ab6bb3da371d3730a6552e93a9b2eab78"> 71</a></span>&#160;<a class="code" href="classChaseLEDs.html#ab6bb3da371d3730a6552e93a9b2eab78">ChaseLEDs::ChaseLEDs</a>(<span class="keyword">const</span> uint8_t *pins, <span class="keywordtype">int</span> num, <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> advanceTime)</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; : _pins(pins)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; , _numPins(num)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; , _currentIndex(-1)</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; , _advanceTime(advanceTime)</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; , _lastChange(millis())</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;{</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; <span class="keywordflow">for</span> (uint8_t index = 0; index &lt; _numPins; ++index) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; pinMode(_pins[index], OUTPUT);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; digitalWrite(_pins[index], LOW);</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160; }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;}</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="classChaseLEDs.html#a8745fa6b9f33b6c6274a563dd4dea786"> 87</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classChaseLEDs.html#a8745fa6b9f33b6c6274a563dd4dea786">ChaseLEDs::loop</a>()</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;{</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; <span class="keywordflow">if</span> (_currentIndex &gt;= 0) {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">if</span> ((millis() - _lastChange) &gt;= _advanceTime) {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="comment">// Advance to the next LED in sequence.</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; _currentIndex = (_currentIndex + 1) % _numPins;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; _lastChange += _advanceTime;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <a class="code" href="classChaseLEDs.html#aa0f4e0bd07dd65ee5574e894a612486b">advance</a>(<a class="code" href="classChaseLEDs.html#a27c460fcb341c2dc2fcf9341616eb525">previousPin</a>(1), _pins[_currentIndex]);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; <span class="comment">// First time - light the first LED.</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; _currentIndex = 0;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; _lastChange = millis();</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; <a class="code" href="classChaseLEDs.html#aa0f4e0bd07dd65ee5574e894a612486b">advance</a>(<a class="code" href="classChaseLEDs.html#a27c460fcb341c2dc2fcf9341616eb525">previousPin</a>(1), _pins[_currentIndex]);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;}</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classChaseLEDs.html#aa0f4e0bd07dd65ee5574e894a612486b"> 136</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="classChaseLEDs.html#aa0f4e0bd07dd65ee5574e894a612486b">ChaseLEDs::advance</a>(uint8_t prevPin, uint8_t nextPin)</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160;{</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; digitalWrite(prevPin, LOW);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; digitalWrite(nextPin, HIGH);</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;}</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
<div class="ttc" id="classChaseLEDs_html_aa0f4e0bd07dd65ee5574e894a612486b"><div class="ttname"><a href="classChaseLEDs.html#aa0f4e0bd07dd65ee5574e894a612486b">ChaseLEDs::advance</a></div><div class="ttdeci">virtual void advance(uint8_t prevPin, uint8_t nextPin)</div><div class="ttdoc">Advances to the next LED in sequence, turning off prevPin, and turning on nextPin. </div><div class="ttdef"><b>Definition:</b> <a href="ChaseLEDs_8cpp_source.html#l00136">ChaseLEDs.cpp:136</a></div></div>
<div class="ttc" id="classChaseLEDs_html_a27c460fcb341c2dc2fcf9341616eb525"><div class="ttname"><a href="classChaseLEDs.html#a27c460fcb341c2dc2fcf9341616eb525">ChaseLEDs::previousPin</a></div><div class="ttdeci">uint8_t previousPin(int n) const </div><div class="ttdoc">Returns the pin that is n steps back in the sequence. </div><div class="ttdef"><b>Definition:</b> <a href="ChaseLEDs_8h_source.html#l00040">ChaseLEDs.h:40</a></div></div>
<div class="ttc" id="classChaseLEDs_html_a8745fa6b9f33b6c6274a563dd4dea786"><div class="ttname"><a href="classChaseLEDs.html#a8745fa6b9f33b6c6274a563dd4dea786">ChaseLEDs::loop</a></div><div class="ttdeci">void loop()</div><div class="ttdef"><b>Definition:</b> <a href="ChaseLEDs_8cpp_source.html#l00087">ChaseLEDs.cpp:87</a></div></div>
<div class="ttc" id="classChaseLEDs_html_ab6bb3da371d3730a6552e93a9b2eab78"><div class="ttname"><a href="classChaseLEDs.html#ab6bb3da371d3730a6552e93a9b2eab78">ChaseLEDs::ChaseLEDs</a></div><div class="ttdeci">ChaseLEDs(const uint8_t *pins, int num, unsigned long advanceTime)</div><div class="ttdoc">Initializes the LED chaser. </div><div class="ttdef"><b>Definition:</b> <a href="ChaseLEDs_8cpp_source.html#l00071">ChaseLEDs.cpp:71</a></div></div>
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