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<title>Appendix D - Dumping and trace buffer</title>
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<body class="article">
<div id="header">
<h1>Appendix D - Dumping and trace buffer</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph">
<p>Dumping the trace buffer created by ThreadX to a file on the host computer is done via commands and/or utilities provided by the specific development tool being used. This appendix contains examples of dumping a trace buffer to a host file in some of the more popular development tools used with ThreadX.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_benchx_tools">BenchX Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the BenchX tools by selecting the <strong><em>Store Memory To File</em></strong> button within the <strong><em>Memory View</em></strong>, as shown below:</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image642.jpg" alt="Screenshot of the Memory View in the BenchX tools.">
</div>
</div>
<div class="paragraph">
<p>At this point, specify the trace buffer address, size, destination file name (including path), and select the <strong><em>Save</em></strong> button as shown below. This will create the binary trace file for viewing within TraceX.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image643.jpg" alt="Screenshot of the the BenchX tools save dialog.">
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_realview_tools">RealView Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the ARM RealView tools by entering the following command at the command-line prompt in RealView:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-c" data-lang="c">&gt; WRITEFILE,raw trace_file.trx=0x6860..0xE560</code></pre>
</div>
</div>
<div class="paragraph">
<p>Upon completion, the file <strong><em>trace_file.trx</em></strong> will contain the trace buffer that is located starting at the address 0x6860 and goes up to address 0xE560. This file is ready for viewing by TraceX.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_iar_tools">IAR Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the IAR tools by simply right-clicking in the memory view and selecting the <strong><em>Memory Save&#8230;&#8203;</em></strong> option, as shown below.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_311.jpg" alt="Screenshot of the Memory Save option in the IAR tools.">
</div>
</div>
<div class="paragraph">
<p>This results in the <strong><em>Memory Save</em></strong> dialog to be displayed. Enter the starting and ending address and the trace file name, then select the <strong><em>Save</em></strong> button. In the example shown below, the IAR tools save the specified trace buffer into Intel HEX records in the file <strong><em>trace_file.hex</em></strong>.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image648.jpg" alt="Screenshot of the IAR tools Memory Save dialog.">
</div>
</div>
<div class="paragraph">
<p>At this point, we have the trace buffer saved in the <strong><em>trace_file.hex</em></strong> file on the host and is ready for viewing with
TraceX.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_codewarrior_tools">CodeWarrior Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the CodeWarrior tools by entering the <strong><em>save</em></strong> command in the Command Window. The following example <strong><em>save</em></strong> command assumes the trace buffer starts at 0x102200 and ends at 0x109F00:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-c" data-lang="c">&gt; save –b p:0x102200..0x109F00 trace_file.trx -a 32bit</code></pre>
</div>
</div>
<div class="paragraph">
<p>This results in the trace buffer being saved in the file
<strong><em>trace_file.trx</em></strong> on the host.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_mplab_tools">MPLAB Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>MPLAB can create a TraceX-compatible trace file through its Export Table utility, which allows the export of any range of memory to a host file. To use this utility to create a trace file for TraceX, proceed as follows:</p>
</div>
<div class="paragraph">
<p><strong>Step 1</strong> Open a memory window by selecting View -&gt; Memory.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_316.jpg" alt="Screenshot of the Memory selected on the View menu.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 2</strong> Right-click within the <strong>Memory View</strong> to display a list of options. Specify <strong>Display Format -1 Byte</strong> to select byte display..</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image650.png" alt="Screenshot of the Memory View with the Display Format option selected.">
</div>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image651.jpg" alt="Screenshot of the Go To dialog.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 3</strong> Right-click again within the <strong>Memory View</strong> Window and select <strong>Go To</strong>, which opens a dialog box that enables you to specify the address of the event buffer. This example shows <strong><em>event_buffer</em></strong> being displayed.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_312.jpg" alt="Screenshot of the Memory View with the Go To option selected.">
</div>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image653.png" alt="Screenshot of an example showing the event_buffer being displayed.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 4</strong> This highlights the contents of the first location of the trace buffer, which is always the string BTXT&#8230;&#8203;.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_313.jpg" alt="Screenshot of the first location of the trace buffer.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 5</strong> Now, right-click again to bring up the options menu, and select <strong>Export Table</strong>.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_314.jpg" alt="Screenshot of the Memory View with the Export Table option selected.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 6</strong> This brings up the <strong>Export Table</strong> dialog, as shown. Specify the range of addresses to export. For an 8K trace buffer, as is the case in this example, specify the range 0xA00006AC to 0xA00026AC, and enter a name for the host file to be created (demo_threadx.trx in this example).</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image656.jpg" alt="Screenshot of the Export As dialog.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 7</strong> A file named <strong>demo_threadx.trx</strong> will be created on the host, and this file can be opened by TraceX.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_ghs_tools">GHS Tools</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the GHS tools by entering the following command at the command-line prompt in the debug command window:</p>
</div>
<div class="listingblock">
<div class="content">
<pre class="highlight"><code class="language-c" data-lang="c">memdump raw c:releasethreadxdemo_threadx.trx event_buffer 32768</code></pre>
</div>
</div>
<div class="paragraph">
<p>Upon completion, the file <strong>demo_threadx.trx</strong> will contain the trace buffer that is located in the event_buffer with a size of 32,768 bytes and is ready for viewing by TraceX.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_renesas_hew">Renesas HEW</h2>
<div class="sectionbody">
<div class="paragraph">
<p>The trace buffer can be dumped to a host file easily with the Renasas HEW tools by following the
three steps (and substeps) below:</p>
</div>
<div class="paragraph">
<p><strong>Step 1</strong> Open Memory Window.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image657.jpg" alt="Screenshot of the Memory Window.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 2</strong> Place cursor within memory window and right click.</p>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image0_315.jpg" alt="Screenshot of the Memory Window with the Save option selected.">
</div>
</div>
<div class="paragraph">
<p><strong>Step 3</strong> Select Save, then in the Save Memory As window do the following:</p>
</div>
<div class="ulist">
<ul>
<li>
<p>Select File format: Binary.</p>
</li>
<li>
<p>Specify Filename: As Desired</p>
</li>
<li>
<p>Specify Start address: trace_buffer</p>
</li>
<li>
<p>Specify End address: (trace_buffer+size)</p>
</li>
<li>
<p>Specify Access size: 1</p>
</li>
<li>
<p>Click Save</p>
</li>
</ul>
</div>
<div class="imageblock">
<div class="content">
<img src="./media/user-guide/image659.jpg" alt="Screenshot of the Save Memory As dialog.">
</div>
</div>
</div>
</div>
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Last updated 2025-02-07 08:25:21 UTC
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