https://devzone.nordicsemi.com/f/nordic-q-a/46106/procedure-to-perform-service-discovery-with-softdevice-apiHello, I am using pc-ble-driver to write a desktop application interfacing with Nordic connectivity dongle. There is no automatic discovery module functionality so I have to roll my own service discovery procedure. However I don&#39;t think I trusted myen-USTelligent Community 13Fri, 12 Apr 2019 11:49:28 GMThttps://devzone.nordicsemi.com/thread/181835?ContentTypeID=1Fri, 12 Apr 2019 11:49:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96ae1b33-e516-4fd3-a164-dd92e194f3baAndreasF<p>Hi.</p> <p>You can follow the different <a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.1.1%2Fgroup___b_l_e___g_a_t_t_c___m_s_c.html">Message Sequence Charts for the GATT Client</a> to make sure that your procedure is correct.</p> <p><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.1.1%2Fgroup___b_l_e___g_a_t_t_c___p_r_i_m___s_r_v_c___d_i_s_c___m_s_c.html">Primary Service Discovery.</a></p> <p><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.1.1%2Fgroup___b_l_e___g_a_t_t_c___r_e_l___d_i_s_c___m_s_c.html">Relationship Discovery.</a></p> <p><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.1.1%2Fgroup___b_l_e___g_a_t_t_c___c_h_a_r___d_i_s_c___m_s_c.html">Characteristics Discovery.</a></p> <p><a href="https://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s140.api.v6.1.1%2Fgroup___b_l_e___g_a_t_t_c___d_e_s_c___d_i_s_c___m_s_c.html">Descriptors Discovery.</a></p> <p>You can take a look at this <a href="https://github.com/NordicSemiconductor/pc-ble-driver/blob/master/examples/heart_rate_collector/main.c">example</a>.</p> <p>Best regards,</p> <p>Andreas</p><div style="clear:both;"></div>