 the key value and verifying that the register contents did not change.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">InstancePtr</td><td>is a pointer to the <a class="el" href="struct_x_wdt_ps.html" title="The XWdtPs driver instance data. ">XWdtPs</a> instance.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><ul>
<li>XST_SUCCESS if self-test was successful.</li>
<li>XST_FAILURE if self-test was not successful.</li>
</