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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>First GATT write event on BLE connection</title><link>https://devzone.nordicsemi.com/f/nordic-q-a/12576/first-gatt-write-event-on-ble-connection</link><description>I have Bluetooth iOS app communication with my nRF51822. I notice that when I connect the the nRF, the first GATT write event is always the same: 
 p_ble_evt-&amp;gt;evt.gatts_evt.params.write.handle = 0x000B 
 I&amp;#39;m thinking this is some system generated event</description><dc:language>en-US</dc:language><generator>Telligent Community 13</generator><lastBuildDate>Fri, 18 Mar 2016 11:35:56 GMT</lastBuildDate><atom:link rel="self" type="application/rss+xml" href="https://devzone.nordicsemi.com/f/nordic-q-a/12576/first-gatt-write-event-on-ble-connection" /><item><title>RE: First GATT write event on BLE connection</title><link>https://devzone.nordicsemi.com/thread/47766?ContentTypeID=1</link><pubDate>Fri, 18 Mar 2016 11:35:56 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:697aeb27-a3ad-4bd5-80b4-91e9b0462941</guid><dc:creator>Petter Myhre</dc:creator><description>&lt;p&gt;I&amp;#39;m guessing it is the CCCD of one of your characteristics. You could check with Master Control Panel.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: First GATT write event on BLE connection</title><link>https://devzone.nordicsemi.com/thread/47765?ContentTypeID=1</link><pubDate>Thu, 17 Mar 2016 14:26:16 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:a2d97dfa-8fc2-43c1-9468-30e44b5f7a43</guid><dc:creator>Bryan V</dc:creator><description>&lt;p&gt;I think it does, and that&amp;#39;s the event handle I am getting. I was just unsure what that handle corresponded to since it was not one I defined in my application.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: First GATT write event on BLE connection</title><link>https://devzone.nordicsemi.com/thread/47764?ContentTypeID=1</link><pubDate>Wed, 16 Mar 2016 09:45:14 GMT</pubDate><guid isPermaLink="false">137ad170-7792-4731-bb38-c0d22fbe4515:c5e2c8e9-0ee8-4df1-beff-84475d365915</guid><dc:creator>Petter Myhre</dc:creator><description>&lt;p&gt;So if you do service discovery with for example Master Control Panel handle 0x000B doesn&amp;#39;t exist?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>