https://devzone.nordicsemi.com/f/nordic-q-a/49142/ble-event-ids-detailsHello, I am using nRF52832 DK PCA10040 v1.2.4, SDK_15.3.0, S132 SoftDevice and Segger for flashing the image. I am using ‘ble_app_blinky’. As part of ble_evt_handler() I am printing in ‘default’ case as below. I am getting 18 (BLE_GAP_EVT_PHY_UPDATEen-USTelligent Community 13Mon, 01 Jul 2019 14:55:30 GMThttps://devzone.nordicsemi.com/thread/195726?ContentTypeID=1Mon, 01 Jul 2019 14:55:30 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7d0b7d9d-3c3b-44ea-8c3d-f57905685419beemavishnu<p>Thank you for your inputs. Now I am able to map all values</p> <p></p> <p>BLE_GAP_EVT_CONN_PARAM_UPDATE&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;: 0x12 (18)<br />BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST&nbsp; &nbsp; : 0x51 (81)<br />BLE_GATTS_EVT_HVN_TX_COMPLETE&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; : 0x57 (87)</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/195704?ContentTypeID=1Mon, 01 Jul 2019 14:17:53 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b4f3c555-6d2c-458c-a55a-18007fa7d9fchaakonsh<p>See&nbsp;nRF_SDK\nRF5_SDK_15.3\components\softdevice\s132\headers\ble_ranges.h<br /><br />This file has defined what module uses what event ID, you must then go to the module&#39;s header file to find the proper ID:<br /><br />An ID of 81 (0x51) is in the range of&nbsp;BLE_GATTS_EVT_BASE and&nbsp;BLE_GATTS_EVT_LAST, I then open ble_gatts.h and look at the definition of&nbsp;BLE_GATTS_EVTS and see that 0x51 is equal to&nbsp;BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST.&nbsp;</p> <p><br /><br /><br /></p><div style="clear:both;"></div>