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<p>This function is the handler which performs processing to handle data events from the device. </p>
<p>It is called from an interrupt context. so the amount of processing should be minimal.</p>
<p>This handler provides an example of how to handle data for the device and is application specific.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">CallBackRef</td><td>contains a callbac