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<?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>nrf51822 BLE connection issue</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/25155/nrf51822-ble-connection-issue</link><description>Hello,
We have a setup where we connect an nrf51822 and an iphone.The nrf51822 connects to the iphone,
notifies the data and disconnects roughly every minute.(This is done to save battery).Default battery
capacity this way is roughly 9 days. 
 Now</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Tue, 19 Sep 2017 10:28:09 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/25155/nrf51822-ble-connection-issue" /><item><title>RE: nrf51822 BLE connection issue</title><link>https://devzone.nordicsemi.com/thread/99082?ContentTypeID=1</link><pubDate>Tue, 19 Sep 2017 10:28:09 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:84409e05-555d-4df2-8923-71cb0da63731</guid><dc:creator>MartinBL</dc:creator><description>&lt;p&gt;3: More help you mean? What exactly is unclear?&lt;/p&gt;
&lt;p&gt;MCP starts to get old, and nRF Connect is intended to be its successor. However, I doubt that this will have any effect on this particular issue.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nrf51822 BLE connection issue</title><link>https://devzone.nordicsemi.com/thread/99083?ContentTypeID=1</link><pubDate>Tue, 19 Sep 2017 05:35:33 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:b44cee4a-bf05-4a3e-85d2-ce87f4d994a4</guid><dc:creator>prasanna</dc:creator><description>&lt;p&gt;Thanks for the reply.&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Yes&lt;/li&gt;
&lt;li&gt;The nRF51 only keeps advertising and we have tested 7 days advertising which does not drain the
battery.&lt;/li&gt;
&lt;li&gt;This could be a possibility.Our error scenario does a sd_softdevice_disable() and re-initialises the
whole stack.Need more pointers for this.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;On another note, we use MCP as mentioned above.Will anything change if I use the nrf Connect or whatever is the latest tool for programming over DFU.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: nrf51822 BLE connection issue</title><link>https://devzone.nordicsemi.com/thread/99081?ContentTypeID=1</link><pubDate>Thu, 14 Sep 2017 10:55:15 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:6a06f65b-68d5-4c76-8f7d-9bb00bfeff37</guid><dc:creator>MartinBL</dc:creator><description>&lt;ol&gt;
&lt;li&gt;Are you saying that the battery still has a sufficient voltage to power the nRF51 after the 7 days?&lt;/li&gt;
&lt;li&gt;I suppose you have some sort of mechanism to connect and disconnect the devices every minute? Is it possible that the nRF51 keeps trying to connect and that this results in an error handler or a drained battery?&lt;/li&gt;
&lt;li&gt;Have you &lt;a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/"&gt;defined DEBUG&lt;/a&gt; in your application? If so your application might end up in an endless while loop on errors or asserts.&lt;/li&gt;
&lt;/ol&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>