https://devzone.nordicsemi.com/f/nordic-q-a/13939/nrf51-callback-on-characteristic-changeHi all, Is it possible to get a callback from the softdevice, when a characteristic is changed? If so can you guide me in the right direction - documentation / examples? :) Thanks.en-USTelligent Community 13Wed, 18 May 2016 18:04:41 GMThttps://devzone.nordicsemi.com/thread/53269?ContentTypeID=1Wed, 18 May 2016 18:04:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ef416030-8746-4c82-a221-149424a54c74Texton<p>Spot on! Thanks.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/53268?ContentTypeID=1Wed, 18 May 2016 16:03:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:62016bfd-9c8f-4ad8-b33e-5cffc52ffb0dRK<p>There&#39;s the BLE_GATTS_EVT_WRITE as documented <a href="http://infocenter.nordicsemi.com/index.jsp?topic=%2Fcom.nordic.infocenter.s130.api.v2.0.0%2Fgroup___b_l_e___g_a_t_t_s___w_r_i_t_e___r_e_q___n_o___a_u_t_h___m_s_c.html">here</a>, is that what you&#39;re looking for?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/53267?ContentTypeID=1Wed, 18 May 2016 15:59:47 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b3228eba-db11-4080-9f8f-421fc9b2c68aWojtek<p>By changed, you mean that someone calls write on it? you can catch write event.</p><div style="clear:both;"></div>