an class="comment">/** @ingroup util</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">Set digital pin 13 to output for testing timing with an oscilloscope.*/</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="keywordtype">void</span> <a class="code" href="group__util.html#gad17