https://devzone.nordicsemi.com/f/nordic-q-a/14314/s130-connectionshi I use S130 from nRF5_SDK_11.0.0_89a8197 as an ble central base on ble_app_uart_c example. when the ble_peripheral change the adv&#39;s content(means have data to send),the central connected it, then peripheral send a packet data, after the central goten-USTelligent Community 13Mon, 06 Jun 2016 13:42:23 GMThttps://devzone.nordicsemi.com/thread/54612?ContentTypeID=1Mon, 06 Jun 2016 13:42:23 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6071fb37-b9ae-45bb-9581-2070e5deb7e0Stian R&#248;ed Hafskjold<p>Maybe you can post your code as files instead? main.c file and any other files you have modified? Makes it a lot easier to debug. Just edit you question and include the files.</p><div style="clear:both;"></div>