<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://devzone.nordicsemi.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:atom="http://www.w3.org/2005/Atom"><channel><title>nRF Connect immediately disconnects from DFU</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/45667/nrf-connect-immediately-disconnects-from-dfu</link><description>Hi, 
 I&amp;#39;m working on getting the DFU bootloader working and I&amp;#39;m following this blog post. 
 
 I&amp;#39;m successfully compiling and loading the bootloader to our custom hardware (we only have one dev-kit at the moment) 
 nRF Connect (Mac + nRF52-DK) successfully</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Thu, 04 Apr 2019 10:18:30 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/45667/nrf-connect-immediately-disconnects-from-dfu" /><item><title>RE: nRF Connect immediately disconnects from DFU</title><link>https://devzone.nordicsemi.com/thread/180258?ContentTypeID=1</link><pubDate>Thu, 04 Apr 2019 10:18:30 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:85392151-5673-4195-a00f-1c2a03867312</guid><dc:creator>Simon</dc:creator><description>&lt;p&gt;Ok. Happy to hear you solved it :)&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF Connect immediately disconnects from DFU</title><link>https://devzone.nordicsemi.com/thread/180256?ContentTypeID=1</link><pubDate>Thu, 04 Apr 2019 10:17:41 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:307fdf14-5971-4cc2-830d-a89ef9181d80</guid><dc:creator>Simon</dc:creator><description>&lt;p&gt;Here are some possible reasons for a timeout:&lt;/p&gt;
&lt;ul&gt;
&lt;li&gt;The LF Clock accuracy parameter is configure lower than the accuracy of the clock (&lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/29786/ble_hci_connection_timeout-and-nrf_clock_lf_xtal_accuracy_xx_ppm"&gt;link&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;MIN_CONN_INTERVAL and&amp;nbsp;MAX_CONN_INTERVAL is not configured correctly (&lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/27492/disconection-occured-in-a-random-way-reason-ble_hci_connection_timeout"&gt;link&lt;/a&gt;)&lt;/li&gt;
&lt;li&gt;Pin is triggering restart (l&lt;a href="https://devzone.nordicsemi.com/f/nordic-q-a/40714/bootloader-causes-ble_hci_connection_timeout"&gt;ink&lt;/a&gt;)&lt;/li&gt;
&lt;/ul&gt;
&lt;p&gt;Please check out these, and if the problem still persist please tell me, and I will look into it.&lt;/p&gt;
&lt;p&gt;Best regards,&lt;/p&gt;
&lt;p&gt;Simon&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nRF Connect immediately disconnects from DFU</title><link>https://devzone.nordicsemi.com/thread/180247?ContentTypeID=1</link><pubDate>Thu, 04 Apr 2019 09:58:16 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:bdce218a-b797-444f-8dde-cdabac6f8ea7</guid><dc:creator>obbe</dc:creator><description>&lt;p&gt;Ok, I figured it out.&lt;/p&gt;
&lt;p&gt;I didn&amp;#39;t get symbols for GDB because the default Makefile compiles sources with the&amp;nbsp;flto option, which apparently also removed the symbols.&lt;/p&gt;
&lt;p&gt;The app didn&amp;#39;t start, because I had forgot to modify the board file to suit our board.&amp;nbsp;In particular the low-frequency clock source was incorrect.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>