https://devzone.nordicsemi.com/f/nordic-q-a/69193/auto-notification-after-char-writeHi All, I am developing a custom BLE profile for my current project and several of my characteristics are write/notify characteristics. I am finding that when I write a new characteristic value to them I get an automatic notification back (one thaten-USTelligent Community 13Tue, 08 Dec 2020 13:43:44 GMThttps://devzone.nordicsemi.com/thread/283828?ContentTypeID=1Tue, 08 Dec 2020 13:43:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:a8a0b5fe-737b-4b7e-b94f-235f91f3733fKenneth<p>Hi,&nbsp;</p> [quote user=""] Is this auto notification a feature of the nordic softdevice? or am I most likely just missing something in the application code that is sending out of date data?&nbsp;[/quote] <p>First: No. Second: Yes.</p> <p>I assume the relevant sequence charts are:</p> <p><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_t_t_s___w_r_i_t_e___c_m_d___n_o___a_u_t_h___m_s_c.html">https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_t_t_s___w_r_i_t_e___c_m_d___n_o___a_u_t_h___m_s_c.html</a></p> <p><a href="https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_t_t_s___h_v_n___m_s_c.html">https://infocenter.nordicsemi.com/topic/com.nordic.infocenter.s140.api.v7.2.0/group___b_l_e___g_a_t_t_s___h_v_n___m_s_c.html</a></p> <p>Kenneth</p> <p></p><div style="clear:both;"></div>