_AUDIO_INPUT</a> <span class="preprocessor">==</span> <span class="preprocessor">true</span><span class="preprocessor">)</span></div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;        adc_channels_to_read.push(AUDIO_INPUT_PIN); <span class="comment">// for audio</span></div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;<span class="preprocessor">#</span><span class="preprocessor">else</span></div><div class="line"><a name="l00212"></a><span 