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<div class="title">Potentiometer.h</div> </div>
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<a href="_potentiometer_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="preprocessor">#ifndef POTENTIOMETER_h</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define POTENTIOMETER_h</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>  </div>
<div class="line"><a name="l00004"></a><span class="lineno"><a class="line" href="class_potentiometer.html"> 4</a></span> <span class="keyword">class </span><a class="code" href="class_potentiometer.html">Potentiometer</a> {</div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>  <span class="keywordtype">int</span> EMA_S = 0; <span class="comment">//initialization of EMA S</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  <span class="keywordtype">float</span> EMA_a = 0.6;</div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  <span class="keywordtype">int</span> _pin;</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <span class="keywordtype">int</span> _id;</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  <span class="keywordtype">int</span> _value;</div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <span class="keywordtype">int</span> _previousReading;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keywordtype">bool</span> _inputFlag = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="keywordtype">bool</span> _changeFlag = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> _previousTimer;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordtype">int</span> _interval = 200;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  void (*_cb)(<a class="code" href="class_potentiometer.html">Potentiometer</a>*, uint8_t, uint8_t); <span class="comment">// Callback function</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  <span class="keywordtype">int</span> _read() {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keywordtype">int</span> sensorValue = analogRead(_pin); <span class="comment">//read the sensor value using ADC</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  EMA_S = (EMA_a*sensorValue) + ((1-EMA_a)*EMA_S); <span class="comment">//run the EMA</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordtype">int</span> mappedValue = map(EMA_S, 5, 1023, 0, 100);</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="keywordflow">return</span> mappedValue;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  }</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordtype">void</span> _setValue(<span class="keywordtype">int</span> x) {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  _value = x;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  }</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a4898ad98a6a277551036a8b9558533df"> 37</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> uint8_t <a class="code" href="class_potentiometer.html#a4898ad98a6a277551036a8b9558533df">kEventStableUpdate</a> = 0;</div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a06d7c4ac6942d9fad402d136f2bfa6ed"> 38</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> uint8_t <a class="code" href="class_potentiometer.html#a06d7c4ac6942d9fad402d136f2bfa6ed">kEventUnstableUpdate</a> = 1;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"><a class="line" href="class_potentiometer.html#af2f25ccdc72808fc5e4baeeb60fe9410"> 40</a></span>  <a class="code" href="class_potentiometer.html#af2f25ccdc72808fc5e4baeeb60fe9410">Potentiometer</a>(<span class="keywordtype">int</span> pin, <span class="keywordtype">int</span> <span class="keywordtype">id</span> = 99) : _pin(pin), _id(id) {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  pinMode(pin, INPUT);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  EMA_S = analogRead(_pin); <span class="comment">//set EMA S for t=1</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  _value = EMA_S;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  _previousReading = EMA_S;</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>  _previousTimer = millis();</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  _inputFlag = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  };</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a17b7977261eebcac2d6d5dbcd7adf167"> 50</a></span>  <span class="keywordtype">void</span> <a class="code" href="class_potentiometer.html#a17b7977261eebcac2d6d5dbcd7adf167">setEventHandler</a>(<span class="keywordtype">void</span>(*<span class="keyword">function</span>)(<a class="code" href="class_potentiometer.html">Potentiometer</a>*, uint8_t, uint8_t)) {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  _cb = <span class="keyword">function</span>;</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>  </div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a0ee40840fe135d6f1799fecdbb4d9f70"> 54</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_potentiometer.html#a0ee40840fe135d6f1799fecdbb4d9f70">getValue</a>() {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordflow">return</span> _value;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a70a53b8e012420e689a38d1751b4269e"> 58</a></span>  <span class="keywordtype">int</span> <a class="code" href="class_potentiometer.html#a70a53b8e012420e689a38d1751b4269e">getId</a>() {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> _id;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
<div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="class_potentiometer.html#a6a9caf03bab70816829c574ee7e88a6b"> 62</a></span>  <span class="keywordtype">void</span> <a class="code" href="class_potentiometer.html#a6a9caf03bab70816829c574ee7e88a6b">check</a>() {</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> timer = millis();</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> deltaTime = timer - _previousTimer;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">int</span> reading = _read();</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">int</span> deltaValue = abs(reading - _value);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (reading != _value) {</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  _inputFlag = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  }</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (_inputFlag == <span class="keyword">true</span> && deltaValue > 1) {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  _inputFlag = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  _changeFlag = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  _previousTimer = timer;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  _setValue(reading);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  _cb(<span class="keyword">this</span>, <a class="code" href="class_potentiometer.html#a06d7c4ac6942d9fad402d136f2bfa6ed">kEventUnstableUpdate</a>, <a class="code" href="class_potentiometer.html#a0ee40840fe135d6f1799fecdbb4d9f70">getValue</a>());</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>  </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (_changeFlag == <span class="keyword">true</span> && deltaTime > _interval) {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  _changeFlag = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  _cb(<span class="keyword">this</span>, <a class="code" href="class_potentiometer.html#a4898ad98a6a277551036a8b9558533df">kEventStableUpdate</a>, <a class="code" href="class_potentiometer.html#a0ee40840fe135d6f1799fecdbb4d9f70">getValue</a>());</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>  }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> };</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aclass_potentiometer_html_a6a9caf03bab70816829c574ee7e88a6b"><div class="ttname"><a href="class_potentiometer.html#a6a9caf03bab70816829c574ee7e88a6b">Potentiometer::check</a></div><div class="ttdeci">void check()</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:62</div></div>
<div class="ttc" id="aclass_potentiometer_html_a4898ad98a6a277551036a8b9558533df"><div class="ttname"><a href="class_potentiometer.html#a4898ad98a6a277551036a8b9558533df">Potentiometer::kEventStableUpdate</a></div><div class="ttdeci">static const uint8_t kEventStableUpdate</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:37</div></div>
<div class="ttc" id="aclass_potentiometer_html_af2f25ccdc72808fc5e4baeeb60fe9410"><div class="ttname"><a href="class_potentiometer.html#af2f25ccdc72808fc5e4baeeb60fe9410">Potentiometer::Potentiometer</a></div><div class="ttdeci">Potentiometer(int pin, int id=99)</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:40</div></div>
<div class="ttc" id="aclass_potentiometer_html"><div class="ttname"><a href="class_potentiometer.html">Potentiometer</a></div><div class="ttdef"><b>Definition:</b> Potentiometer.h:4</div></div>
<div class="ttc" id="aclass_potentiometer_html_a70a53b8e012420e689a38d1751b4269e"><div class="ttname"><a href="class_potentiometer.html#a70a53b8e012420e689a38d1751b4269e">Potentiometer::getId</a></div><div class="ttdeci">int getId()</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:58</div></div>
<div class="ttc" id="aclass_potentiometer_html_a17b7977261eebcac2d6d5dbcd7adf167"><div class="ttname"><a href="class_potentiometer.html#a17b7977261eebcac2d6d5dbcd7adf167">Potentiometer::setEventHandler</a></div><div class="ttdeci">void setEventHandler(void(*function)(Potentiometer *, uint8_t, uint8_t))</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:50</div></div>
<div class="ttc" id="aclass_potentiometer_html_a06d7c4ac6942d9fad402d136f2bfa6ed"><div class="ttname"><a href="class_potentiometer.html#a06d7c4ac6942d9fad402d136f2bfa6ed">Potentiometer::kEventUnstableUpdate</a></div><div class="ttdeci">static const uint8_t kEventUnstableUpdate</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:38</div></div>
<div class="ttc" id="aclass_potentiometer_html_a0ee40840fe135d6f1799fecdbb4d9f70"><div class="ttname"><a href="class_potentiometer.html#a0ee40840fe135d6f1799fecdbb4d9f70">Potentiometer::getValue</a></div><div class="ttdeci">int getValue()</div><div class="ttdef"><b>Definition:</b> Potentiometer.h:54</div></div>
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