https://devzone.nordicsemi.com/f/nordic-q-a/39456/bluetooth-pairingI&#39;m trying to understand which part of the code provides the bluetooth connection between two nRF52840. I worked in sdk15.0.0 with multilink, blinky and uart examples to solve the connection. If anyone know which part of the code makes the connectionen-USTelligent Community 13Mon, 15 Oct 2018 10:27:35 GMThttps://devzone.nordicsemi.com/thread/152842?ContentTypeID=1Mon, 15 Oct 2018 10:27:35 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5f9d5c25-b702-444d-872b-e65f33fc0a9eAndreasF<p>Hi.<br /><br />I strongly recommend that you take a look at the three beginners tutorials we have for <a href="https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-advertising-a-beginners-tutorial">advertising</a>, <a href="https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial">services</a>, and <a href="https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial">characteristics</a>, in that particular order.<br /><br />There is also a <a href="https://github.com/bjornspockeli/custom_ble_service_example">custom service tutorial</a>, which is a combined version of the three tutorials you could do for further understanding.</p> <p>Connections in the code are essentially handled in a <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.0.0%2Fgroup___b_l_e___g_a_p.html&amp;cp=2_3_2_1_1_2_1">GAP event</a>, more specifically by using the <strong><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.0.0%2Fgroup___b_l_e___g_a_p___f_u_n_c_t_i_o_n_s.html&amp;anchor=gacca0e56084c7b3ed832b1bfa3911b7fe">sd_ble_gap_connect()</a></strong> API.</p> <p>- Andreas</p><div style="clear:both;"></div>