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| <div class="section" id="debugging-mynewt"> |
| <h1>Debugging Mynewt<a class="headerlink" href="#debugging-mynewt" title="Permalink to this headline">¶</a></h1> |
| <p>If you run into issues with Mynewt applications, you may need to use the debugger. This page will show |
| you how to set up and use the debugger in Mynewt.</p> |
| <div class="contents local topic" id="contents"> |
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| <li><p><a class="reference internal" href="#prerequisites" id="id1">Prerequisites</a></p></li> |
| <li><p><a class="reference internal" href="#starting-the-debugger" id="id2">Starting the Debugger</a></p></li> |
| </ul> |
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| <div class="section" id="prerequisites"> |
| <h2><a class="toc-backref" href="#id1">Prerequisites</a><a class="headerlink" href="#prerequisites" title="Permalink to this headline">¶</a></h2> |
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| <li><p>You have installed the Newt tool and toolchains on your machine. Visit the <a class="reference internal" href="native_install/index.html"><span class="doc">Native Installation</span></a> page to get started.</p></li> |
| <li><p>You have run through one of the tutorials, created a project, or have an existing one.</p></li> |
| <li><p>Familiarity with GDB; for more information refer to the <a class="reference external" href="https://sourceware.org/gdb/current/onlinedocs/gdb/">GDB documentation</a>.</p></li> |
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| <div class="section" id="starting-the-debugger"> |
| <h2><a class="toc-backref" href="#id2">Starting the Debugger</a><a class="headerlink" href="#starting-the-debugger" title="Permalink to this headline">¶</a></h2> |
| <p>Mynewt uses GDB to debug applications. To open a debugger session for Mynewt, you can run |
| either of the following newt commands:</p> |
| <ul class="simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">debug</span> <span class="pre"><target_name></span></code></p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">run</span> <span class="pre"><target_name></span> <span class="pre"><version_number></span></code></p></li> |
| </ul> |
| <p>The <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">debug</span></code> command will start the debugger for the specified target. That target |
| should be running on the device you are debugging on. For more information on the command, take a look at |
| the <a class="reference internal" href="../newt/command_list/newt_debug.html"><span class="doc">command structure in the Newt Tool Guide</span></a>.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">newt</span> <span class="pre">run</span></code> command also starts the debugger, but will also build the target, create |
| an image with the specified version number, and load it onto the board. More details on its usage and syntax are |
| on the <a class="reference internal" href="../newt/command_list/newt_run.html"><span class="doc">Newt Tool command guide</span></a>.</p> |
| <p>Starting the debugger will bring up the GDB session in the console:</p> |
| <div class="highlight-console notranslate"><div class="highlight"><pre><span></span><span class="go">~/test/1.5 $ newt debug pca40blinky</span> |
| <span class="go">[/Users/dlee/test/1.5/repos/apache-mynewt-core/hw/bsp/nordic_pca10040/nordic_pca10040_debug.sh /Users/dlee/test/1.5/repos/apache-mynewt-core/hw/bsp/nordic_pca10040 bin/targets/pca40blinky/app/apps/blinky/blinky]</span> |
| |
| <span class="go">Debugging bin/targets/pca40blinky/app/apps/blinky/blinky.elf</span> |
| <span class="go">GNU gdb (GNU Tools for Arm Embedded Processors 7-2018-q2-update) 8.1.0.20180315-git</span> |
| <span class="go">Copyright (C) 2018 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 bin/targets/pca40blinky/app/apps/blinky/blinky.elf...done.</span> |
| <span class="go">os_tick_idle (ticks=128)</span> |
| <span class="go">at repos/apache-mynewt-core/hw/mcu/nordic/nrf52xxx/src/hal_os_tick.c:164</span> |
| <span class="go">164 if (ticks > 0) {</span> |
| <span class="gp gp-VirtualEnv">(gdb)</span> |
| </pre></div> |
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