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<article itemscope itemtype="http://schema.org/Article"><div class="article__header"><header><h1 style="color:Tomato;">Arduino Ecran LCD</h1></header></div><meta itemprop="headline" content="Arduino Ecran LCD"><div class="article__info clearfix"><ul class="left-col menu"><li>
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<i class="far fa-calendar-alt"></i>&nbsp;<span title="Création" style="color:#FF00FF">31&nbsp;juil.&nbsp;2019</span></li></ul></div><meta itemprop="datePublished" content="2019-07-31T00:00:00+02:00">
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<summary><b>Afficher/cacher Sommaire</b></summary>
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</details><h2 id="arduino--ecran-lcd">Arduino + Ecran LCD</h2>
<h3 id="schéma-pour-le-câblage-vers-un-atmega328p-directement">Schéma pour le câblage vers un ATmega328p directement</h3>
<p>Dans mon cas, j’ai utilisé les broches D2,D3,D5,D6,D7 et D8 (ce qui sera visible dans le code à la déclaration du LCD : “LiquidCrystal lcd(2, 3, 5, 6, 7, 8);”). Celà donne le schéma de câblage suivant :</p>
<p><img src="/images/lcdbreaduino_bb.png" alt="Câblage LCD vers ATmega328p" width="600" /></p>
<p>Câblage LCD vers ATmega328p (broches 2,3,5,6,7,8)</p>
<h3 id="schéma-pour-le-câblage-vers-un-arduino-uno-r3">Schéma pour le câblage vers un Arduino UNO R3</h3>
<p>Nous aurons ici une petite différence, puisque nous utiliserons les broches 2,3,4,5,6 et 7 (la broche 4 n’était pas utilisée, pour rendre le schéma plus lisible sur le précédent montage). Attention donc à bien modifier le code en adéquation.</p>
<p><img src="/images/Arduino-LCD_bb-1024x752.png" alt="LCD connecté à un Arduino" width="600" /></p>
<p>LCD connecté à un Arduino (broches 2,3,4,5,6,7)
Description du brochage du LCD texte</p>
<p>Sur le LCD, les connecteurs étant en haut, et la première broche sera celle la plus à gauche, cela donnera les connections suivantes :</p>
<ol>
<li>Masse du circuit</li>
<li>+5V</li>
<li>vers une résistance de 2.2KOhms qui part ensuite vers la masse, ou alors un potentiomètre pour ajuster le contraste (ici il est fixe)</li>
<li>Broche D2 du ATmega (ou du Arduino)</li>
<li>Masse du circuit</li>
<li>Broche D3</li>
<li>rien</li>
<li>rien</li>
<li>rien</li>
<li>rien</li>
<li>Broche D5 (D4 dans le second schéma)</li>
<li>Broche D6 (D5 dans le second schéma)</li>
<li>Broche D7 (D6 dans le second schéma)</li>
<li>Broche D8 (D7 dans le second schéma)</li>
<li>vers une résistance de 82 Ohms qui part vers le +5V (pour le rétro-éclairage de mon modèle)</li>
<li>Vers la masse</li>
</ol>
<h3 id="cas-du-rétro-éclairage-rgb">Cas du rétro-éclairage RGB</h3>
<p>Si vous avez un écran LCD RGB, vous aurez alors la broche 15 connectée au 5V, et la broche 16 connectée à la masse en passant par une résistance adaptée à la LED rouge du rétro-éclairage, la broche 17 connectée à la masse par une résistance adaptée à la led verte, et la broche 18 connectée à la masse par une résistance adaptée à la LED bleue. Dans tous les cas, vérifiez bien la valeur de la résistance nécessaire s’il en faut une. Je dispose de LCD rétro éclairés RGB qui ont déjà ces résistances, et du coup sur un autre modèle sans résistance, j’ai grillé la LED rouge en ne mettant pas de résistance en série. Résultat mon LCD RGB est devenu un LCD GB.</p>
<h3 id="le-programme">Le programme</h3>
<p>Pour le code, c’est simple : il suffit de suivre cet exemple sur Arduino.cc.
En pratique :</p>
<div class="language-c highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="cp">#include</span> <span class="cpf">&lt;LiquidCrystal.h&gt;</span><span class="c1">;</span><span class="cp">
</span><span class="c1">// configuration du LCD, avec les bonnes broches, à changer si vous changez le câblage</span>
<span class="n">LiquidCrystal</span> <span class="nf">lcd</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">7</span><span class="p">,</span> <span class="mi">8</span><span class="p">);</span>
<span class="kt">void</span> <span class="nf">setup</span><span class="p">()</span>
<span class="p">{</span>
<span class="c1">// On définit le nombre de colonnes et de lignes du LCD (16 caractères par ligne, 2 lignes)</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">begin</span><span class="p">(</span><span class="mi">16</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
<span class="c1">// La fonction suivante permet d'afficher un message initial.</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Projet Milapli"</span><span class="p">);</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="nf">loop</span><span class="p">()</span>
<span class="p">{</span>
<span class="c1">// On définit le curseur à la colonne 0, ligne 1</span>
<span class="c1">// (notez que la ligne 1 correspond à la seconde ligne de l'écran, car on compte à partir de 0)</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">setCursor</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
<span class="c1">// On affiche le nombre de secondes écoulées depuis le démarrage du programme:</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">millis</span><span class="p">()</span><span class="o">/</span><span class="mi">1000</span><span class="p">);</span>
<span class="p">}</span>
</code></pre></div></div>
<p>Les fonctions importantes sont donc <a href="http://arduino.cc/en/Reference/LiquidCrystalPrint">lcd.print(…)</a> qui permet d’afficher une chaine sur le LCD. Les caractères spéciaux tels que le retour à la ligne ne sont pas pris en compte. D’autre part, si vous mettez une chaîne de plus de 16 caractères, seul les 16 premiers s’afficheront. A vous de gérer la longueur des messages donc. Vous avez également la fonction <a href="http://arduino.cc/en/Reference/LiquidCrystalSetCursor">lcd.setCursor(colonne, ligne)</a>, qui permet de déplacer le curseur à la position (colonne, ligne) spécifiée. L’écriture se fera à partir de cette position pour le print suivant. Enfin, vous aurez la fonction <a href="http://arduino.cc/en/Reference/LiquidCrystalClear">lcd.clear()</a> qui efface ce qui est sur le LCD, et place le curseur à la position 0,0.Il existe d’autres fonctionnalités que vous pouvez découvrir en parcourant la <a href="http://arduino.cc/en/Reference/LiquidCrystal">documentation de la bibliothèque LiquidCrystal</a>.</p>
<h3 id="autres-ressources">Autres ressources</h3>
<ul>
<li><a href="http://nagashur.com/blog/2015/08/12/alitest-ecran-lcd-40x2/">Essai d’un écran LCD 40×2, avec schéma de câblage</a></li>
</ul>
<h2 id="arduino--ecran-lcd--capteur">Arduino + Ecran LCD + Capteur</h2>
<h3 id="capteur-température--arduino">Capteur température + arduino</h3>
<ul>
<li><a href="http://nagashur.com/blog/2013/06/18/lire-la-valeur-dune-sonde-de-temperature-et-d%E2%80%99hygrometrie-dht11/">Lire la valeur d’une sonde de température et d’hygrométrie DHT11/DHT22/AM2301</a></li>
</ul>
<p><strong>Le capteur DHT22/AM2302</strong></p>
<p>Le capteur de température et humidité DHT22/AM2302 (<a href="/files/Digital+humidity+and+temperature+sensor+AM2302.pdf">Documentation (pdf)</a>)<br />
<img src="/images/dht22-am2302.png" alt="" width="200" /><br />
<img src="/images/dht22-am2302-specif.png" alt="" width="600" /></p>
<p><strong>Branchements</strong></p>
<p><img src="/images/DHT22-11_basic_bb.png" alt="" width="400" /></p>
<p>Il faudra tout d’abord installer la bibliothèque. Pour cela, deux solutions. Si vous avez une version récente de Arduino, vous pouvez utiliser le gestionnaire de bibliothèques. Il faudra cliquer sur <strong>Croquis</strong> dans l’IDE arduino, puis <strong>Include Library</strong>, puis <strong>Manage Libraries</strong> … pour ouvrir le gestionnaire. Dès lors vous pouvez chercher le paquet <strong>DHT sensor library</strong>, puis cliquer sur <strong>Install</strong>. <br />
Une autre solution est de vous rendre sur le <a href="https://github.com/adafruit/DHT-sensor-library">github de Adafruit dédié au capteurs DHT</a>, puis cliquez sur <strong>Download ZIP</strong> avant de cliquer dans l’IDE Arduino sur <strong>Croquis</strong>, puis <strong>Include Library</strong>, puis <strong>Add .ZIP Library</strong>… et sélectionner l’archive téléchargée.</p>
<p><strong>Programme ,sortie sur console IDE</strong></p>
<div class="language-c highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="cp">#include</span> <span class="cpf">"DHT.h"</span><span class="cp">
#define DHTPIN 8 // broche ou l'on a branche le capteur
</span><span class="c1">// de-commenter le capteur utilise</span>
<span class="c1">//#define DHTTYPE DHT11 // DHT 11</span>
<span class="cp">#define DHTTYPE DHT22 // DHT 22 (AM2302)
</span><span class="c1">//#define DHTTYPE DHT21 // DHT 21 (AM2301)</span>
<span class="n">DHT</span> <span class="nf">dht</span><span class="p">(</span><span class="n">DHTPIN</span><span class="p">,</span> <span class="n">DHTTYPE</span><span class="p">);</span><span class="c1">//déclaration du capteur</span>
<span class="kt">void</span> <span class="nf">setup</span><span class="p">()</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">begin</span><span class="p">(</span><span class="mi">9600</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"DHTxx test!"</span><span class="p">);</span>
<span class="n">dht</span><span class="p">.</span><span class="n">begin</span><span class="p">();</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="nf">loop</span><span class="p">()</span>
<span class="p">{</span>
<span class="n">delay</span><span class="p">(</span><span class="mi">2000</span><span class="p">);</span>
<span class="c1">// La lecture du capteur prend 250ms</span>
<span class="c1">// Les valeurs lues peuvet etre vieilles de jusqu'a 2 secondes (le capteur est lent)</span>
<span class="kt">float</span> <span class="n">h</span> <span class="o">=</span> <span class="n">dht</span><span class="p">.</span><span class="n">readHumidity</span><span class="p">();</span><span class="c1">//on lit l'hygrometrie</span>
<span class="kt">float</span> <span class="n">t</span> <span class="o">=</span> <span class="n">dht</span><span class="p">.</span><span class="n">readTemperature</span><span class="p">();</span><span class="c1">//on lit la temperature en celsius (par defaut)</span>
<span class="c1">// pour lire en farenheit, il faut le paramère (isFahrenheit = true) :</span>
<span class="kt">float</span> <span class="n">f</span> <span class="o">=</span> <span class="n">dht</span><span class="p">.</span><span class="n">readTemperature</span><span class="p">(</span><span class="nb">true</span><span class="p">);</span>
<span class="c1">//On verifie si la lecture a echoue, si oui on quitte la boucle pour recommencer.</span>
<span class="k">if</span> <span class="p">(</span><span class="n">isnan</span><span class="p">(</span><span class="n">h</span><span class="p">)</span> <span class="o">||</span> <span class="n">isnan</span><span class="p">(</span><span class="n">t</span><span class="p">)</span> <span class="o">||</span> <span class="n">isnan</span><span class="p">(</span><span class="n">f</span><span class="p">))</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"Failed to read from DHT sensor!"</span><span class="p">);</span>
<span class="k">return</span><span class="p">;</span>
<span class="p">}</span>
<span class="c1">// Calcul de l'indice de temperature en Farenheit</span>
<span class="kt">float</span> <span class="n">hif</span> <span class="o">=</span> <span class="n">dht</span><span class="p">.</span><span class="n">computeHeatIndex</span><span class="p">(</span><span class="n">f</span><span class="p">,</span> <span class="n">h</span><span class="p">);</span>
<span class="c1">// Calcul de l'indice de temperature en Celsius</span>
<span class="kt">float</span> <span class="n">hic</span> <span class="o">=</span> <span class="n">dht</span><span class="p">.</span><span class="n">computeHeatIndex</span><span class="p">(</span><span class="n">t</span><span class="p">,</span> <span class="n">h</span><span class="p">,</span> <span class="nb">false</span><span class="p">);</span>
<span class="c1">//Affichages :</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Humidite: "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">h</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" %</span><span class="se">\t</span><span class="s">"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Temperature: "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">t</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" *C "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">f</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" *F</span><span class="se">\t</span><span class="s">"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Indice de temperature: "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">hic</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" *C "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">hif</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">" *F"</span><span class="p">);</span>
<span class="p">}</span>
</code></pre></div></div>
<p>Les résultats du test<br />
<img src="/images/test-capteur-am2302.png" alt="" width="600" /></p>
<h3 id="capteur-température--arduino--écran-lcd">Capteur température + arduino + écran LCD</h3>
<p>A ce point, il est facile de faire un mini projet, en rajoutant un écran LCD pour afficher les informations. Dans cet exemple, j’utilise un écran LCD de deux lignes de 40 caractères chacune, mais le principe est le même pour toutes les tailles, et les schémas utilisent un écran 2×16.
Bibliothèques</p>
<p>Nous continuerons à utiliser la bibliothèque DHT d’Adafruit, mais nous en rajouterons deux autres :</p>
<ul>
<li><a href="https://github.com/adafruit/Adafruit_Sensor">Adafruit Unified Sensor Driver</a></li>
<li><a href="https://github.com/adafruit/Adafruit_DHT_Unified">Adafruit DHT Unified</a></li>
</ul>
<p>Vous pouvez chercher ces termes dans le gestionnaire de bibliothèques de l’IDE Arduino (<strong>Croquis/Include Library/Manage Libraries</strong>…) ou télécharger les archives et les ajouter à la main (<strong>Croquis/Include Library/Add .ZIP Library</strong>…). Ces bibliothèques nous apporteront une méthode unifiée d’accès aux capteurs, ce qui pourra servir par la suite si nous souhaitons ajouter d’autres capteurs à ce mini projet.</p>
<p>On utilisera également la bibliothèque LiquidCrystal qui est déjà fournie avec l’IDE Arduino.<br />
Le câblage du LCD</p>
<p>Nous reprenons le schéma suivant, auquel nous ajoutons les connections vers l’écran LCD :<br />
<img src="/images/DHT22-11_withLCD_bb-1024x768.png" alt="" width="600" /><br />
Pour plus d’explication, voir <a href="http://nagashur.com/blog/2015/08/12/alitest-ecran-lcd-40x2/">l’article sur l’écran LCD 40×2 utilisé ici</a>, ou l’article sur le <a href="http://nagashur.com/blog/2013/07/13/interfacer-un-ecran-lcd-texte-avec-un-atmega-ou-un-arduino/">câblage d’un écran LCD sur un Arduino ou un ATMega328p</a>.</p>
<p>Le code</p>
<div class="language-c highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="c1">// DHT Temperature &amp; Humidity Sensor</span>
<span class="c1">// Unified Sensor Library Example</span>
<span class="c1">// Written by Tony DiCola for Adafruit Industries</span>
<span class="c1">// Released under an MIT license.</span>
<span class="c1">// Depends on the following Arduino libraries:</span>
<span class="c1">// - Adafruit Unified Sensor Library: https://github.com/adafruit/Adafruit_Sensor</span>
<span class="c1">// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library</span>
<span class="cp">#include</span> <span class="cpf">&lt;Adafruit_Sensor.h&gt;</span><span class="cp">
#include</span> <span class="cpf">&lt;DHT.h&gt;</span><span class="cp">
#include</span> <span class="cpf">&lt;DHT_U.h&gt;</span><span class="cp">
#define DHTPIN 8 // Pin which is connected to the DHT sensor.
#include</span> <span class="cpf">&lt;LiquidCrystal.h&gt;</span><span class="cp">
</span>
<span class="c1">//#define DHTTYPE DHT11 // DHT 11 </span>
<span class="cp">#define DHTTYPE DHT22 // DHT 22 (AM2302)
</span><span class="c1">//#define DHTTYPE DHT21 // DHT 21 (AM2301)</span>
<span class="c1">// See guide for details on sensor wiring and usage:</span>
<span class="c1">// https://learn.adafruit.com/dht/overview</span>
<span class="n">DHT_Unified</span> <span class="nf">dht</span><span class="p">(</span><span class="n">DHTPIN</span><span class="p">,</span> <span class="n">DHTTYPE</span><span class="p">);</span>
<span class="kt">uint32_t</span> <span class="n">delayMS</span><span class="p">;</span>
<span class="n">LiquidCrystal</span> <span class="nf">lcd</span><span class="p">(</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="mi">6</span><span class="p">,</span> <span class="mi">7</span><span class="p">);</span> <span class="c1">// on a remplace la ligne de depart qui etait LiquidCrystal lcd(12, 11, 5, 4, 3, 2);</span>
<span class="kt">void</span> <span class="nf">setup</span><span class="p">()</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">begin</span><span class="p">(</span><span class="mi">9600</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">begin</span><span class="p">(</span><span class="mi">40</span><span class="p">,</span> <span class="mi">2</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" www.nagashur.com/blog/ "</span><span class="p">);</span>
<span class="n">dht</span><span class="p">.</span><span class="n">begin</span><span class="p">();</span><span class="c1">// Initialize device.</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"DHTxx Unified Sensor Example"</span><span class="p">);</span>
<span class="c1">// Print temperature sensor details.</span>
<span class="n">sensor_t</span> <span class="n">sensor</span><span class="p">;</span>
<span class="n">dht</span><span class="p">.</span><span class="n">temperature</span><span class="p">().</span><span class="n">getSensor</span><span class="p">(</span><span class="o">&amp;</span><span class="n">sensor</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"------------------------------------"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"Temperature"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Sensor: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">name</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Driver Ver: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">version</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Unique ID: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">sensor_id</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Max Value: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">max_value</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">" *C"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Min Value: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">min_value</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">" *C"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Resolution: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">resolution</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">" *C"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"------------------------------------"</span><span class="p">);</span>
<span class="c1">// Print humidity sensor details.</span>
<span class="n">dht</span><span class="p">.</span><span class="n">humidity</span><span class="p">().</span><span class="n">getSensor</span><span class="p">(</span><span class="o">&amp;</span><span class="n">sensor</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"------------------------------------"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"Humidity"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Sensor: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">name</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Driver Ver: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">version</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Unique ID: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">sensor_id</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Max Value: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">max_value</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"%"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Min Value: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">min_value</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"%"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span> <span class="p">(</span><span class="s">"Resolution: "</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">sensor</span><span class="p">.</span><span class="n">resolution</span><span class="p">);</span> <span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"%"</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"------------------------------------"</span><span class="p">);</span>
<span class="c1">// Set delay between sensor readings based on sensor details.</span>
<span class="n">delayMS</span> <span class="o">=</span> <span class="n">sensor</span><span class="p">.</span><span class="n">min_delay</span> <span class="o">/</span> <span class="mi">1000</span><span class="p">;</span>
<span class="p">}</span>
<span class="kt">void</span> <span class="nf">loop</span><span class="p">()</span>
<span class="p">{</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">setCursor</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">1</span><span class="p">);</span>
<span class="c1">// Delay between measurements.</span>
<span class="n">delay</span><span class="p">(</span><span class="n">delayMS</span><span class="p">);</span>
<span class="c1">// Get temperature event and print its value.</span>
<span class="n">sensors_event_t</span> <span class="n">event</span><span class="p">;</span>
<span class="n">dht</span><span class="p">.</span><span class="n">temperature</span><span class="p">().</span><span class="n">getEvent</span><span class="p">(</span><span class="o">&amp;</span><span class="n">event</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">isnan</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">temperature</span><span class="p">))</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"Error reading temperature!"</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Temperature: "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">temperature</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">" *C"</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"temperature : "</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">temperature</span><span class="p">);</span>
<span class="p">}</span>
<span class="c1">// Get humidity event and print its value.</span>
<span class="n">dht</span><span class="p">.</span><span class="n">humidity</span><span class="p">().</span><span class="n">getEvent</span><span class="p">(</span><span class="o">&amp;</span><span class="n">event</span><span class="p">);</span>
<span class="k">if</span> <span class="p">(</span><span class="n">isnan</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">relative_humidity</span><span class="p">))</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"Error reading humidity!"</span><span class="p">);</span>
<span class="p">}</span>
<span class="k">else</span>
<span class="p">{</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">"Humidity: "</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">relative_humidity</span><span class="p">);</span>
<span class="n">Serial</span><span class="p">.</span><span class="n">println</span><span class="p">(</span><span class="s">"%"</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="s">" humidity : "</span><span class="p">);</span>
<span class="n">lcd</span><span class="p">.</span><span class="n">print</span><span class="p">(</span><span class="n">event</span><span class="p">.</span><span class="n">relative_humidity</span><span class="p">);</span>
<span class="p">}</span>
<span class="p">}</span>
</code></pre></div></div>
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function createStateChangeListener (xhr, callback) {
return function () {
if (xhr.readyState === 4 && xhr.status === 200) {
try {
callback(null, JSON.parse(xhr.responseText))
} catch (err) {
callback(err, null)
}
}
}
}
function getXHR () {
return window.XMLHttpRequest ? new window.XMLHttpRequest() : new ActiveXObject('Microsoft.XMLHTTP')
}
'use strict'
var _$OptionsValidator_3 = function OptionsValidator (params) {
if (!validateParams(params)) {
throw new Error('-- OptionsValidator: required options missing')
}
if (!(this instanceof OptionsValidator)) {
return new OptionsValidator(params)
}
const requiredOptions = params.required
this.getRequiredOptions = function () {
return requiredOptions
}
this.validate = function (parameters) {
const errors = []
requiredOptions.forEach(function (requiredOptionName) {
if (typeof parameters[requiredOptionName] === 'undefined') {
errors.push(requiredOptionName)
}
})
return errors
}
function validateParams (params) {
if (!params) {
return false
}
return typeof params.required !== 'undefined' && params.required instanceof Array
}
}
'use strict'
var _$utils_9 = {
merge: merge,
isJSON: isJSON
}
function merge (defaultParams, mergeParams) {
const mergedOptions = {}
for (const option in defaultParams) {
mergedOptions[option] = defaultParams[option]
if (typeof mergeParams[option] !== 'undefined') {
mergedOptions[option] = mergeParams[option]
}
}
return mergedOptions
}
function isJSON (json) {
try {
if (json instanceof Object && JSON.parse(JSON.stringify(json))) {
return true
}
return false
} catch (err) {
return false
}
}
var _$src_8 = {};
(function (window) {
'use strict'
let options = {
searchInput: null,
resultsContainer: null,
json: [],
success: Function.prototype,
searchResultTemplate: '<li><a href="{url}" title="{desc}">{title}</a></li>',
templateMiddleware: Function.prototype,
sortMiddleware: function () {
return 0
},
noResultsText: 'No results found',
limit: 10,
fuzzy: false,
debounceTime: null,
exclude: []
}
let debounceTimerHandle
const debounce = function (func, delayMillis) {
if (delayMillis) {
clearTimeout(debounceTimerHandle)
debounceTimerHandle = setTimeout(func, delayMillis)
} else {
func.call()
}
}
const requiredOptions = ['searchInput', 'resultsContainer', 'json']
/* removed: const _$Templater_7 = require('./Templater') */;
/* removed: const _$Repository_4 = require('./Repository') */;
/* removed: const _$JSONLoader_2 = require('./JSONLoader') */;
const optionsValidator = _$OptionsValidator_3({
required: requiredOptions
})
/* removed: const _$utils_9 = require('./utils') */;
window.SimpleJekyllSearch = function (_options) {
const errors = optionsValidator.validate(_options)
if (errors.length > 0) {
throwError('You must specify the following required options: ' + requiredOptions)
}
options = _$utils_9.merge(options, _options)
_$Templater_7.setOptions({
template: options.searchResultTemplate,
middleware: options.templateMiddleware
})
_$Repository_4.setOptions({
fuzzy: options.fuzzy,
limit: options.limit,
sort: options.sortMiddleware,
exclude: options.exclude
})
if (_$utils_9.isJSON(options.json)) {
initWithJSON(options.json)
} else {
initWithURL(options.json)
}
const rv = {
search: search
}
typeof options.success === 'function' && options.success.call(rv)
return rv
}
function initWithJSON (json) {
_$Repository_4.put(json)
registerInput()
}
function initWithURL (url) {
_$JSONLoader_2.load(url, function (err, json) {
if (err) {
throwError('failed to get JSON (' + url + ')')
}
initWithJSON(json)
})
}
function emptyResultsContainer () {
options.resultsContainer.innerHTML = ''
}
function appendToResultsContainer (text) {
options.resultsContainer.innerHTML += text
}
function registerInput () {
options.searchInput.addEventListener('input', function (e) {
if (isWhitelistedKey(e.which)) {
emptyResultsContainer()
debounce(function () { search(e.target.value) }, options.debounceTime)
}
})
}
function search (query) {
if (isValidQuery(query)) {
emptyResultsContainer()
render(_$Repository_4.search(query), query)
}
}
function render (results, query) {
const len = results.length
if (len === 0) {
return appendToResultsContainer(options.noResultsText)
}
for (let i = 0; i < len; i++) {
results[i].query = query
appendToResultsContainer(_$Templater_7.compile(results[i]))
}
}
function isValidQuery (query) {
return query && query.length > 0
}
function isWhitelistedKey (key) {
return [13, 16, 20, 37, 38, 39, 40, 91].indexOf(key) === -1
}
function throwError (message) {
throw new Error('SimpleJekyllSearch --- ' + message)
}
})(window)
}());
</script>
<!-- Configuration -->
<script>
SimpleJekyllSearch({
searchInput: document.getElementById('search-input'),
resultsContainer: document.getElementById('results-container'),
noResultsText: '<p>Aucun résultat!</p>',
json: '/search.json',
searchResultTemplate: '<li><a href="{url}">{date}&nbsp;{title}</a>&nbsp;(Création {create})</li>'
})
</script>
</div></div>
<script>(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function scrollToAnchor(anchor, duration, callback) {
var $root = this;
$root.animate({ scrollTop: $(anchor).position().top }, duration, function() {
window.history.replaceState(null, '', window.location.href.split('#')[0] + anchor);
callback && callback();
});
}
$.fn.scrollToAnchor = scrollToAnchor;
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function affix(options) {
var $root = this, $window = $(window), $scrollTarget, $scroll,
offsetBottom = 0, scrollTarget = window, scroll = window.document, disabled = false, isOverallScroller = true,
rootTop, rootLeft, rootHeight, scrollBottom, rootBottomTop,
hasInit = false, curState;
function setOptions(options) {
var _options = options || {};
_options.offsetBottom && (offsetBottom = _options.offsetBottom);
_options.scrollTarget && (scrollTarget = _options.scrollTarget);
_options.scroll && (scroll = _options.scroll);
_options.disabled !== undefined && (disabled = _options.disabled);
$scrollTarget = $(scrollTarget);
isOverallScroller = window.isOverallScroller($scrollTarget[0]);
$scroll = $(scroll);
}
function preCalc() {
top();
rootHeight = $root.outerHeight();
rootTop = $root.offset().top + (isOverallScroller ? 0 : $scrollTarget.scrollTop());
rootLeft = $root.offset().left;
}
function calc(needPreCalc) {
needPreCalc && preCalc();
scrollBottom = $scroll.outerHeight() - offsetBottom - rootHeight;
rootBottomTop = scrollBottom - rootTop;
}
function top() {
if (curState !== 'top') {
$root.removeClass('fixed').css({
left: 0,
top: 0
});
curState = 'top';
}
}
function fixed() {
if (curState !== 'fixed') {
$root.addClass('fixed').css({
left: rootLeft + 'px',
top: 0
});
curState = 'fixed';
}
}
function bottom() {
if (curState !== 'bottom') {
$root.removeClass('fixed').css({
left: 0,
top: rootBottomTop + 'px'
});
curState = 'bottom';
}
}
function setState() {
var scrollTop = $scrollTarget.scrollTop();
if (scrollTop >= rootTop && scrollTop <= scrollBottom) {
fixed();
} else if (scrollTop < rootTop) {
top();
} else {
bottom();
}
}
function init() {
if(!hasInit) {
var interval, timeout;
calc(true); setState();
// run calc every 100 millisecond
interval = setInterval(function() {
calc();
}, 100);
timeout = setTimeout(function() {
clearInterval(interval);
}, 45000);
window.pageLoad.then(function() {
setTimeout(function() {
clearInterval(interval);
clearTimeout(timeout);
}, 3000);
});
$scrollTarget.on('scroll', function() {
disabled || setState();
});
$window.on('resize', function() {
disabled || (calc(true), setState());
});
hasInit = true;
}
}
setOptions(options);
if (!disabled) {
init();
}
$window.on('resize', window.throttle(function() {
init();
}, 200));
return {
setOptions: setOptions,
refresh: function() {
calc(true, { animation: false }); setState();
}
};
}
$.fn.affix = affix;
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
function toc(options) {
var $root = this, $window = $(window), $scrollTarget, $scroller, $tocUl = $('<ul class="toc toc--ellipsis"></ul>'), $tocLi, $headings, $activeLast, $activeCur,
selectors = 'h1,h2,h3', container = 'body', scrollTarget = window, scroller = 'html, body', disabled = false,
headingsPos, scrolling = false, hasRendered = false, hasInit = false;
function setOptions(options) {
var _options = options || {};
_options.selectors && (selectors = _options.selectors);
_options.container && (container = _options.container);
_options.scrollTarget && (scrollTarget = _options.scrollTarget);
_options.scroller && (scroller = _options.scroller);
_options.disabled !== undefined && (disabled = _options.disabled);
$headings = $(container).find(selectors).filter('[id]');
$scrollTarget = $(scrollTarget);
$scroller = $(scroller);
}
function calc() {
headingsPos = [];
$headings.each(function() {
headingsPos.push(Math.floor($(this).position().top));
});
}
function setState(element, disabled) {
var scrollTop = $scrollTarget.scrollTop(), i;
if (disabled || !headingsPos || headingsPos.length < 1) { return; }
if (element) {
$activeCur = element;
} else {
for (i = 0; i < headingsPos.length; i++) {
if (scrollTop >= headingsPos[i]) {
$activeCur = $tocLi.eq(i);
} else {
$activeCur || ($activeCur = $tocLi.eq(i));
break;
}
}
}
$activeLast && $activeLast.removeClass('active');
($activeLast = $activeCur).addClass('active');
}
function render() {
if(!hasRendered) {
$root.append($tocUl);
$headings.each(function() {
var $this = $(this);
$tocUl.append($('<li></li>').addClass('toc-' + $this.prop('tagName').toLowerCase())
.append($('<a></a>').text($this.text()).attr('href', '#' + $this.prop('id'))));
});
$tocLi = $tocUl.children('li');
$tocUl.on('click', 'a', function(e) {
e.preventDefault();
var $this = $(this);
scrolling = true;
setState($this.parent());
$scroller.scrollToAnchor($this.attr('href'), 400, function() {
scrolling = false;
});
});
}
hasRendered = true;
}
function init() {
var interval, timeout;
if(!hasInit) {
render(); calc(); setState(null, scrolling);
// run calc every 100 millisecond
interval = setInterval(function() {
calc();
}, 100);
timeout = setTimeout(function() {
clearInterval(interval);
}, 45000);
window.pageLoad.then(function() {
setTimeout(function() {
clearInterval(interval);
clearTimeout(timeout);
}, 3000);
});
$scrollTarget.on('scroll', function() {
disabled || setState(null, scrolling);
});
$window.on('resize', window.throttle(function() {
if (!disabled) {
render(); calc(); setState(null, scrolling);
}
}, 100));
}
hasInit = true;
}
setOptions(options);
if (!disabled) {
init();
}
$window.on('resize', window.throttle(function() {
init();
}, 200));
return {
setOptions: setOptions
};
}
$.fn.toc = toc;
});
})();
/*(function () {
})();*/
</script><script>
/* toc must before affix, since affix need to konw toc' height. */(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
var TOC_SELECTOR = window.TEXT_VARIABLES.site.toc.selectors;
window.Lazyload.js(SOURCES.jquery, function() {
var $window = $(window);
var $articleContent = $('.js-article-content');
var $tocRoot = $('.js-toc-root'), $col2 = $('.js-col-aside');
var toc;
var tocDisabled = false;
var hasSidebar = $('.js-page-root').hasClass('layout--page--sidebar');
var hasToc = $articleContent.find(TOC_SELECTOR).length > 0;
function disabled() {
return $col2.css('display') === 'none' || !hasToc;
}
tocDisabled = disabled();
toc = $tocRoot.toc({
selectors: TOC_SELECTOR,
container: $articleContent,
scrollTarget: hasSidebar ? '.js-page-main' : null,
scroller: hasSidebar ? '.js-page-main' : null,
disabled: tocDisabled
});
$window.on('resize', window.throttle(function() {
tocDisabled = disabled();
toc && toc.setOptions({
disabled: tocDisabled
});
}, 100));
});
})();
(function() {
var SOURCES = window.TEXT_VARIABLES.sources;
window.Lazyload.js(SOURCES.jquery, function() {
var $window = $(window), $pageFooter = $('.js-page-footer');
var $pageAside = $('.js-page-aside');
var affix;
var tocDisabled = false;
var hasSidebar = $('.js-page-root').hasClass('layout--page--sidebar');
affix = $pageAside.affix({
offsetBottom: $pageFooter.outerHeight(),
scrollTarget: hasSidebar ? '.js-page-main' : null,
scroller: hasSidebar ? '.js-page-main' : null,
scroll: hasSidebar ? $('.js-page-main').children() : null,
disabled: tocDisabled
});
$window.on('resize', window.throttle(function() {
affix && affix.setOptions({
disabled: tocDisabled
});
}, 100));
window.pageAsideAffix = affix;
});
})();
</script><!---->
</div>
<script>(function () {
var $root = document.getElementsByClassName('root')[0];
if (window.hasEvent('touchstart')) {
$root.dataset.isTouch = true;
document.addEventListener('touchstart', function(){}, false);
}
})();
</script>
</body>
</html>
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