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| <div class="section" id="segger-systemview"> |
| <h1>SEGGER SystemView<a class="headerlink" href="#segger-systemview" title="Permalink to this headline">¶</a></h1> |
| <div class="section" id="objective"> |
| <h2>Objective<a class="headerlink" href="#objective" title="Permalink to this headline">¶</a></h2> |
| <p>With <a class="reference external" href="https://www.segger.com/systemview.html">SEGGER’s SystemView</a> |
| you can “record data from the target system while it is running. The |
| recorded data is analyzed and the system behavior is visualized in |
| different views.”</p> |
| <div class="contents local topic" id="contents"> |
| <ul class="simple"> |
| <li><p><a class="reference internal" href="#hardware-needed" id="id1">Hardware needed</a></p></li> |
| <li><p><a class="reference internal" href="#software-needed" id="id2">Software needed</a></p></li> |
| <li><p><a class="reference internal" href="#setup-the-target" id="id3">Setup the target</a></p></li> |
| <li><p><a class="reference internal" href="#run-the-target-executables" id="id4">Run the target executables</a></p></li> |
| <li><p><a class="reference internal" href="#launch-the-app" id="id5">Launch the app</a></p></li> |
| </ul> |
| </div> |
| <div class="section" id="hardware-needed"> |
| <h3><a class="toc-backref" href="#id1">Hardware needed</a><a class="headerlink" href="#hardware-needed" title="Permalink to this headline">¶</a></h3> |
| <p>You’ll need a SEGGER J-Link programmer in order to use this advanced |
| functionality. You might have an external J-Link programmer you’re |
| already using, or maybe your board has a dedicated J-Link onboard as |
| some development kits do. Another possibilty is J-Link OB firmware |
| available for some devices like the micro:bit.</p> |
| </div> |
| <div class="section" id="software-needed"> |
| <h3><a class="toc-backref" href="#id2">Software needed</a><a class="headerlink" href="#software-needed" title="Permalink to this headline">¶</a></h3> |
| <ul class="simple"> |
| <li><p>Download <a class="reference external" href="https://www.segger.com/downloads/free-utilities/">SEGGER’s SystemView |
| app</a>.</p></li> |
| <li><p>Copy the description file from sys/sysview/SYSVIEW_Mynewt.txt to the |
| /Description/ directory of SystemView</p></li> |
| </ul> |
| </div> |
| <div class="section" id="setup-the-target"> |
| <h3><a class="toc-backref" href="#id3">Setup the target</a><a class="headerlink" href="#setup-the-target" title="Permalink to this headline">¶</a></h3> |
| <p>We’ll assume you have an existing example we’re enabling SystemView on, |
| in this case <a class="reference internal" href="../blinky/nRF52.html"><span class="doc">blinky on nrf52</span></a>. We can do so with the newt |
| target amend command:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">newt target amend blink_nordic syscfg=OS_SYSVIEW=1</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="run-the-target-executables"> |
| <h3><a class="toc-backref" href="#id4">Run the target executables</a><a class="headerlink" href="#run-the-target-executables" title="Permalink to this headline">¶</a></h3> |
| <p>Now ‘run’ the newt target as you’ll need an active debugger process to |
| attach to:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="gp">$ </span>newt<span class="w"> </span>run<span class="w"> </span>blink_nordic<span class="w"> </span><span class="m">0</span> |
| <span class="go">App image succesfully generated: ~/Downloads/myproj/bin/targets/blink_nordic/app/apps/bleprph/bleprph.img</span> |
| <span class="go">Loading app image into slot 1</span> |
| <span class="go">[~/Downloads/myproj/repos/apache-mynewt-core/hw/bsp/nrf52-thingy/nrf52-thingy_debug.sh ~/Downloads/myproj/repos/apache-mynewt-core/hw/bsp/nrf52-thingy ~/Downloads/myproj/bin/targets/blink_nordic/app/apps/bleprph/bleprph]</span> |
| <span class="go">Debugging ~/Downloads/myproj/bin/targets/blink_nordic/app/apps/bleprph/bleprph.elf</span> |
| <span class="go">GNU gdb (GNU Tools for ARM Embedded Processors) 7.8.0.20150604-cvs</span> |
| <span class="go">Copyright (C) 2014 Free Software Foundation, Inc.</span> |
| <span class="go">License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html></span> |
| <span class="go">This is free software: you are free to change and redistribute it.</span> |
| <span class="go">There is NO WARRANTY, to the extent permitted by law. Type "show copying"</span> |
| <span class="go">and "show warranty" for details.</span> |
| <span class="go">This GDB was configured as "--host=x86_64-apple-darwin10 --target=arm-none-eabi".</span> |
| <span class="go">Type "show configuration" for configuration details.</span> |
| <span class="go">For bug reporting instructions, please see:</span> |
| <span class="go"><http://www.gnu.org/software/gdb/bugs/>.</span> |
| <span class="go">Find the GDB manual and other documentation resources online at:</span> |
| <span class="go"><http://www.gnu.org/software/gdb/documentation/>.</span> |
| <span class="go">For help, type "help".</span> |
| <span class="go">Type "apropos word" to search for commands related to "word"...</span> |
| <span class="go">Reading symbols from ~/Downloads/myproj/bin/targets/blink_nordic/app/apps/bleprph/bleprph.elf...done.</span> |
| <span class="go">0x000000d8 in ?? ()</span> |
| <span class="go">Resetting target</span> |
| <span class="go">0x000000dc in ?? ()</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="launch-the-app"> |
| <h3><a class="toc-backref" href="#id5">Launch the app</a><a class="headerlink" href="#launch-the-app" title="Permalink to this headline">¶</a></h3> |
| <p>Launch the app and press <strong>OK</strong> in the System Information dialog box.</p> |
| <div class="figure align-default"> |
| <img alt="../../_images/segger_sysview1.png" src="../../_images/segger_sysview1.png" /> |
| </div> |
| <p>Select <strong>Target > Start Recording</strong> and press <strong>OK</strong> in the |
| Configuration dialog box.</p> |
| <div class="figure align-default"> |
| <img alt="../../_images/segger_sysview_start_record.png" src="../../_images/segger_sysview_start_record.png" /> |
| </div> |
| <p>You should see the recording for your Mynewt application.</p> |
| <div class="figure align-default"> |
| <img alt="../../_images/segger_sysview_recording.png" src="../../_images/segger_sysview_recording.png" /> |
| </div> |
| </div> |
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