a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="preprocessor">#ifndef MCP23017_RELAY_DRIVER_H</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="preprocessor">#define MCP23017_RELAY_DRIVER_H</span>