="w">    </span><span class="n">mqtt</span><span class="p">.</span><span class="n">begin</span><span class="p">(</span><span class="s">&quot;192.168.1.50&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;username&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;password&quot;</span><span class="p">);</span><span class="w"></span>
<span class="p">}</span><span class="w"></span>

<span class="kt">void</span><span class="w"> </span><span class="n