https://devzone.nordicsemi.com/f/nordic-q-a/25618/what-are-the-purpose-of-the-keypress-and-lesc-function-in-peer-managerI try to add function for the peer manager initialization and set the security parameters. I did not understand keypress and lesc parameters exactly. Documentation says for keypress; Enable generation of keypress notifications. Also documentationen-USTelligent Community 13Mon, 02 Oct 2017 10:10:39 GMThttps://devzone.nordicsemi.com/thread/100984?ContentTypeID=1Mon, 02 Oct 2017 10:10:39 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0ae718ad-7de7-453e-8638-f18e76890284Petter Myhre<p>LE Secure Connections (LESC) what added in Bluetooth core specification 4.2.</p> <p>It is a pairing alternative that provides protection again eavesdropping and MITM attacks.</p> <p>It uses an Elliptic Curve Diffie-Hellman (ECDH) key agreement to derive encryption keys.</p> <p>Keypress notification can be used when doing LESC Passkey Entry, it is used to inform the remote device when keys have been entered or erased.</p> <p>The peer with the keyboard send them with sd_ble_gap_keypress_notify(), and the peer with the display receives BLE_GAP_EVT_KEY_PRESSED events.</p> <p>If you don&#39;t support LESC, set the LESC bit to 0. If you don&#39;t support keypress notifications set the keypress bit to 0.</p><div style="clear:both;"></div>