https://devzone.nordicsemi.com/f/nordic-q-a/11543/client---server-ble-applicationhello there i have two nrf51 dk kits. now i want that one act as central and other act as server. i want to communicate between two. can you tell me how to do it?? i think i should create custom characteristic for UART.en-USTelligent Community 13Wed, 03 Feb 2016 13:47:35 GMThttps://devzone.nordicsemi.com/thread/43641?ContentTypeID=1Wed, 03 Feb 2016 13:47:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ee53d014-d4c5-4d54-9242-793b6549642atesc<p>For the UART, have you read and understood the documentation for <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.sdk51.v10.0.0%2Fble_sdk_app_nus_eval.html&amp;cp=4_0_1_4_2_2_18">UART/Serial Port Emulation over BLE</a>?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43640?ContentTypeID=1Wed, 03 Feb 2016 13:13:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:94ea8a0b-c4d5-4ab4-ab00-1c8984eab0eatesc<p>You can use directed advertising and whitelisting, see <a href="https://devzone.nordicsemi.com/question/66367/one-set-of-paired-devices/">one set of paired devices</a>. The peripheral and the central must add each other to the whitelist on first connect, or the whitelist must be preprogrammed.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43639?ContentTypeID=1Tue, 26 Jan 2016 14:00:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a80b5c9-50c1-4f69-9b52-2c12277df737rushin<p>hello i have one question can we do like that central and peripheral connects automatically??</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43638?ContentTypeID=1Tue, 26 Jan 2016 11:12:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ca84029-92c8-4e1f-92be-38cffed28315rushin<p>yes i understand it. but i have one question. how uart data is copied into tx characteristic??</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43637?ContentTypeID=1Tue, 26 Jan 2016 10:40:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:da80f1b9-b839-4995-a646-a153afbfbee3Wojtek<p>You can use &quot;uart&quot; service from that app then, do you?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43636?ContentTypeID=1Tue, 26 Jan 2016 10:39:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8cd997e8-60dd-4529-b192-179c7ebc7f69rushin<p>yes i have seen</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43635?ContentTypeID=1Tue, 26 Jan 2016 10:36:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:38e85056-957e-426f-862a-08e469b31740Wojtek<p>Have you seen Nordic Uart Service (NUS) example application?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/43634?ContentTypeID=1Tue, 26 Jan 2016 10:27:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c63d1c7-b5b4-463a-a7d8-3e2719168d83rushin<p>i have one silly question in BLE uart application.how communication take place between central and peripheral in BLE uart application??</p><div style="clear:both;"></div>