https://devzone.nordicsemi.com/f/nordic-q-a/18814/ble-uart-example---ready-eventIs there an event that I can hook into that fires when the soft device has finished it&#39;s connection and negotiation with the phone and is ready to send data to the phone ? Basically, what I&#39;m trying to achieve is the following: Device is asleepen-USTelligent Community 13Fri, 06 Jan 2017 23:48:28 GMThttps://devzone.nordicsemi.com/thread/72653?ContentTypeID=1Fri, 06 Jan 2017 23:48:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:55a5f1a9-4843-4d5e-929f-e6b6b5e4ad28Hein<p>Perfect answer, thank you for taking the time! Not only do I know what to do, I also understand completely why my own attempts were not working. Brilliant.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/72652?ContentTypeID=1Fri, 06 Jan 2017 11:26:04 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ce973a43-06de-46f9-8178-bcf3467b9f63J&#248;rgen Holmefjord<p>Hi,</p> <p>You will get a <code>BLE_GAP_EVT_CONNECTED</code> event in the BLE event handler, <code>on_ble_evt()</code>, when the device is connected. The issue with start sending data when this event is received is that the BLE UART example use notifications when sending data. The function <code>ble_nus_string_send()</code> will not send any data before notifacations is enabled from the central side. When the CCCD handle for the characteristic is written, to enable notifications, the function <code>on_write()</code> in <em>ble_nus.c</em> is called. You can use the method described in <a href="https://devzone.nordicsemi.com/question/95597/triggering-event-handler-upon-cccd-for-notifications-change/?answer=95743#post-id-95743">this post</a> to send data on notifications enable.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>