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fpgaol_docs


			
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                    Testing your Design on FPGAOL
            
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                    Error&solution
            
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                                <h2 id="error-and-solution">Error and Solution</h2>
<h3 id="can-not-login">can not login</h3>
<p>Error message:</p>
<pre><code>Your username and password didn&apos;t match.
Please try again.
</code></pre><p>Possible reason:</p>
<ul>
<li>wrong username or password</li>
</ul>
<p>Solution:</p>
<p>Check your username and password. Or Ask the administrator to reset your password.</p>
<h3 id="refuse-to-acquire">refuse to acquire</h3>
<p>Error message:</p>
<pre><code>Sorry, but...
You might see this page if you:
......
WARNING: This will release the FPGA you are currently using.
</code></pre><p>Possible reason:</p>
<ul>
<li>Attemptted to acquire multiple FPGA instances.</li>
<li>Opened two FPGA pages.</li>
<li>Refreshed the FPGA page.</li>
</ul>
<p>Solution:</p>
<p>Open only one FPGA page. Or press <strong>Reacquire</strong> button.</p>
<h3 id="no-instance-available">no instance available</h3>
<p>Error message:</p>
<pre><code>There are no FPGA instances currently available.
</code></pre><p>Possible reason:</p>
<ul>
<li>Some devices were accidentally offline.</li>
<li>Many users are using at the same time.</li>
<li>Both above.</li>
</ul>
<p>Solution:</p>
<p>Wait and try again. Or contact with the administrator.</p>
<h3 id="upload-or-program-fail">upload or program fail</h3>
<p>Error message:</p>
<pre><code>Failed to program device with the uploaded file. Perhaps this file is not a valid bitstream?
</code></pre><p>Possible reason:</p>
<ul>
<li>You have select the wrong chip(not <strong>xc7a100tcsg324-1</strong>).</li>
<li>poor network condition.</li>
<li>Some device(s) accidentally went wrong.</li>
</ul>
<p>Solution:</p>
<p>Check the chip you select and try again.</p>
<h3 id="connection-closed">connection closed</h3>
<p>Error message:</p>
<pre><code>Connection closed unexpectedly!
Perhaps it&apos;s a network error
or you may be holding FPGA for too long (&gt;10 min).
</code></pre><p>Possible reason:</p>
<ul>
<li>poor network condition.</li>
<li>timeout.</li>
</ul>
<p>Solution:</p>
<p>Wait and try again.</p>
<h3 id="fail-to-render-waveform">fail to render waveform</h3>
<p>No Error message:
(your browser get stuck)</p>
<p>Possible reason:</p>
<ul>
<li>The signal you put on LED(s) change too rapidly.</li>
<li>poor network condition.</li>
</ul>
<p>Solution:</p>
<p>Use <strong>period</strong> mode waveform.</p>

                                
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