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adding documentation for microphone
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lukasmaximus89
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<div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
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<div itemprop="articleBody">
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<p># Usage</p>
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<div class="code python highlight-default notranslate"><div class="highlight"><pre><span></span><span class="kn">from</span> <span class="nn">m5stack</span> <span class="k">import</span> <span class="o">*</span>
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<span class="kn">import</span> <span class="nn">machine</span><span class="o">,</span> <span class="nn">_thread</span>
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<span class="n">mic_adc</span> <span class="o">=</span> <span class="mi">0</span>
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<span class="n">buffer</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="k">def</span> <span class="nf">microphone_enter</span><span class="p">():</span>
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<span class="nb">print</span><span class="p">(</span><span class="s1">'microphone_enter'</span><span class="p">)</span>
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<span class="k">global</span> <span class="n">mic_adc</span><span class="p">,</span> <span class="n">buffer</span>
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<span class="k">try</span><span class="p">:</span>
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<span class="n">mic_adc</span> <span class="o">=</span> <span class="n">machine</span><span class="o">.</span><span class="n">ADC</span><span class="p">(</span><span class="mi">34</span><span class="p">)</span>
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<span class="n">mic_adc</span><span class="o">.</span><span class="n">atten</span><span class="p">(</span><span class="n">mic_adc</span><span class="o">.</span><span class="n">ATTN_11DB</span><span class="p">)</span>
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<span class="n">dac</span> <span class="o">=</span> <span class="n">machine</span><span class="o">.</span><span class="n">DAC</span><span class="p">(</span><span class="n">machine</span><span class="o">.</span><span class="n">Pin</span><span class="p">(</span><span class="mi">25</span><span class="p">))</span>
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<span class="n">dac</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
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<span class="k">except</span><span class="p">:</span>
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<span class="k">pass</span>
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<span class="n">buffer</span> <span class="o">=</span> <span class="p">[]</span>
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<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">55</span><span class="p">):</span>
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<span class="n">buffer</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
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<span class="k">def</span> <span class="nf">microphone_loop</span><span class="p">():</span>
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<span class="k">global</span> <span class="n">mic_adc</span><span class="p">,</span> <span class="n">buffer</span>
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<span class="n">val</span> <span class="o">=</span> <span class="mi">0</span>
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<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="mi">32</span><span class="p">):</span>
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<span class="n">raw</span> <span class="o">=</span> <span class="p">(</span><span class="n">mic_adc</span><span class="o">.</span><span class="n">readraw</span><span class="p">()</span> <span class="o">-</span> <span class="mi">1845</span><span class="p">)</span> <span class="o">//</span> <span class="mi">10</span>
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<span class="k">if</span> <span class="n">raw</span> <span class="o">></span> <span class="mi">20</span><span class="p">:</span>
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<span class="n">raw</span> <span class="o">=</span> <span class="mi">20</span>
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<span class="k">elif</span> <span class="n">raw</span> <span class="o"><</span> <span class="o">-</span><span class="mi">20</span><span class="p">:</span>
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<span class="n">raw</span> <span class="o">=</span> <span class="o">-</span><span class="mi">20</span>
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<span class="n">val</span> <span class="o">+=</span> <span class="n">raw</span>
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<span class="n">val</span> <span class="o">=</span> <span class="n">val</span> <span class="o">//</span> <span class="mi">32</span>
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<span class="n">buffer</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span>
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<span class="n">buffer</span><span class="o">.</span><span class="n">insert</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="n">val</span><span class="p">)</span>
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<span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">50</span><span class="p">):</span>
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<span class="n">lcd</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">i</span><span class="o">*</span><span class="mi">2</span><span class="o">+</span><span class="mi">44</span><span class="p">,</span> <span class="mi">120</span><span class="o">+</span><span class="n">buffer</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">],</span> <span class="n">i</span><span class="o">*</span><span class="mi">2</span><span class="o">+</span><span class="mi">44</span><span class="o">+</span><span class="mi">2</span><span class="p">,</span> <span class="mi">120</span><span class="o">+</span><span class="n">buffer</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">2</span><span class="p">],</span> <span class="n">lcd</span><span class="o">.</span><span class="n">WHITE</span><span class="p">)</span>
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<span class="n">lcd</span><span class="o">.</span><span class="n">line</span><span class="p">(</span><span class="n">i</span><span class="o">*</span><span class="mi">2</span><span class="o">+</span><span class="mi">44</span><span class="p">,</span> <span class="mi">120</span><span class="o">+</span><span class="n">buffer</span><span class="p">[</span><span class="n">i</span><span class="p">],</span> <span class="n">i</span><span class="o">*</span><span class="mi">2</span><span class="o">+</span><span class="mi">44</span><span class="o">+</span><span class="mi">2</span><span class="p">,</span> <span class="mi">120</span><span class="o">+</span><span class="n">buffer</span><span class="p">[</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">],</span> <span class="n">lcd</span><span class="o">.</span><span class="n">BLACK</span><span class="p">)</span>
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<span class="n">microphone_enter</span><span class="p">()</span>
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<span class="k">while</span> <span class="mi">1</span><span class="p">:</span>
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<span class="n">microphone_loop</span><span class="p">()</span>
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</pre></div>
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