How do I calculate a characteristic value in real-time ?https://devzone.nordicsemi.com/f/nordic-q-a/32808/how-do-i-calculate-a-characteristic-value-in-real-timeWhen my mobile phone reads my characteristic, I would like the characteristic to be calculated at the same time, and not before. i.e. like a video game that does not render the world until the camera looks at it. Is that possible? How do I implement iten-USTelligent Community 13Tue, 27 Mar 2018 20:36:10 GMTRE: How do I calculate a characteristic value in real-time ?https://devzone.nordicsemi.com/thread/126173?ContentTypeID=1Tue, 27 Mar 2018 20:36:10 GMT137ad170-7792-4731-bb38-c0d22fbe4515:02d469ca-fd39-40c5-aa9b-a49476d69a24pabigot<p>Set rd_auth in the characteristic value ble_gatts_attr_md_t referenced by ble_gatts_attr_t::p_attr_md.&nbsp; When a read request is received the soft device will generate a&nbsp;BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST event; prior to (or as a side effect of) invoking sd_ble_gatts_rw_authorize_reply() in the handler you can update the value.&nbsp; (edited to correct types).</p><div style="clear:both;"></div>