https://devzone.nordicsemi.com/f/nordic-q-a/15085/detecting-jtag-swdio-swdclk-connectionIs there a way for firmware running on the nRF52 to detect the presence of a SEGGER (or other) SWD capable device? I&#39;ve looked through all the nRF registers but couldn&#39;t find anything appropriate.en-USTelligent Community 13Fri, 01 Sep 2017 18:44:45 GMThttps://devzone.nordicsemi.com/thread/57628?ContentTypeID=1Fri, 01 Sep 2017 18:44:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d21c5d53-8940-4864-a700-a31455f5a812Adam Sillye<p>Thanks for this :)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57627?ContentTypeID=1Tue, 12 Jul 2016 19:30:18 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3f5da6aa-a3b3-4f30-8a48-75cc513c7198FI<p>Good stuff</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57630?ContentTypeID=1Tue, 12 Jul 2016 19:20:45 GMT137ad170-7792-4731-bb38-c0d22fbe4515:68157072-c7b0-4f1b-b713-bb09c870db02awneil<p>Specifically, for the question at hand:</p> <ul> <li> <p><a href="http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka14536.html">infocenter.arm.com/.../index.jsp</a></p> </li> <li> <p><a href="http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0439b/BCGDFGDG.html">infocenter.arm.com/.../index.jsp</a></p> </li> </ul><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57629?ContentTypeID=1Tue, 12 Jul 2016 19:11:54 GMT137ad170-7792-4731-bb38-c0d22fbe4515:9e5f0f0e-08e7-4738-9b96-918dfb0f2d8dawneil<p>Stuff like this is purely in the domain of the ARM Cortex-M core and has nothing, really, to do with Nordic.</p> <p>The best references are ARM&#39;s own materials:</p> <p><a href="http://infocentre.arm.com">http://infocentre.arm.com</a></p> <p><a href="https://community.arm.com/">https://community.arm.com/</a></p> <p>And the excellent <em>&quot;Definitive Guide&quot;</em> books by <strong>Joseph Yiu</strong>:</p> <p><a href="http://store.elsevier.com/The-Definitive-Guide-to-the-ARM-Cortex-M0/Joseph-Yiu/isbn-9780123854780/">store.elsevier.com/.../</a></p> <p><a href="http://store.elsevier.com/The-Definitive-Guide-to-ARM%C2%AE-Cortex%C2%AE-M3-and-Cortex%C2%AE-M4-Processors/Joseph-Yiu/isbn-9780124080829/">store.elsevier.com/.../</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57626?ContentTypeID=1Tue, 12 Jul 2016 15:41:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c62d637c-a5c5-492b-9950-fbe31f6d40fdjprofit<p>Wow. Thanks very much. I am not up to speed on all that CMSIS offers. Guess I better seek out a tutuorial. There appears to be a ton of stuff there that the Nordic API docs don&#39;t discuss.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57625?ContentTypeID=1Mon, 11 Jul 2016 23:35:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5c033e17-8980-4703-b653-849bb9bf361cRK<pre><code>( ( CoreDebug-&gt;DHCSR &amp; CoreDebug_DHCSR_C_DEBUGEN_Msk ) != 0 ) </code></pre> <p>ought to do the trick.</p><div style="clear:both;"></div>