https://devzone.nordicsemi.com/f/nordic-q-a/16482/sdk12-cscs-example-connects-but-sends-no-dataI have the nRF52 development kit. I&#39;m using eclipse Neon and the Nordic apps on an Iphone 6. I got the SDK11 examples working where the CSCS BLE example is what I want to use as a starting point. I decided to check out the SDK12 version. I had to adden-USTelligent Community 13Tue, 20 Sep 2016 15:06:05 GMThttps://devzone.nordicsemi.com/thread/63099?ContentTypeID=1Tue, 20 Sep 2016 15:06:05 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1be062e3-8248-4259-8b05-fcc38242cd11Charles<p>I figured out the problem, it was the iphone. Changing programs and such causes the bluetooth cache to screw things up. Turning off the bluetooth and turning it on works most of the time but sometimes it needs to be rebooted. This can make development really frustrating since you don&#39;t know if its the phone or your program.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/63098?ContentTypeID=1Mon, 19 Sep 2016 13:08:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c5c5489b-ce31-41af-9812-b672ed0cc7f4Charles<p>I&#39;m using GCC and yes, I&#39;m using the ble_app_cscs example in SDK12.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/63097?ContentTypeID=1Mon, 19 Sep 2016 06:02:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:970b192d-f98b-4c0b-9cc0-4b38399384e0bjorn-spockeli<p>Are you using Keil or GCC? You&#39;re using the ble_app_cscs example from SDK12 right? You have not ported the SDK v11 example to SDK 12?</p><div style="clear:both;"></div>