development environment： SDK 14.2 , NRF52840 as central and NRF52832 as periph for Bonding: Passkey Entry, Central displays, and the error occur on nrf52840.
I want to know the detail rules about NRF_ERROR_INVALID_PARAM, Any assistance will be appreciated
the code snippet as follows:
uint32_t err_code;
memset(&sec_params,0,sizeof(ble_gap_sec_params_t));
sec_params.bond = 1;
sec_params.io_caps = BLE_GAP_IO_CAPS_KEYBOARD_ONLY;
sec_params.max_key_size = 16;
sec_params.min_key_size = 7;
sec_params.oob = 0;
sec_params.mitm = 1;
sec_params.kdist_own.enc = 1;
sec_params.kdist_own.id = 0;
sec_params.kdist_own.link = 0;
sec_params.kdist_own.sign = 0;
sec_params.kdist_peer.enc = 1;
sec_params.kdist_peer.id = 0;
sec_params.kdist_peer.link = 0;
sec_params.kdist_peer.sign = 0;
m_sec_key_set.keys_own.p_enc_key = &m_mcs_enc_key;
m_sec_key_set.keys_own.p_id_key = NULL;
m_sec_key_set.keys_own.p_pk = NULL;
m_sec_key_set.keys_own.p_sign_key = NULL;
m_sec_key_set.keys_peer.p_enc_key = &m_remote_enc_key;
m_sec_key_set.keys_peer.p_id_key = NULL;
m_sec_key_set.keys_peer.p_pk = NULL;
m_sec_key_set.keys_peer.p_sign_key = NULL;
err_code=sd_ble_gap_sec_params_reply(conn_handle,BLE_GAP_SEC_STATUS_SUCCESS,&sec_params,&m_sec_key_set);
//err_code=sd_ble_gap_sec_params_reply(conn_handle,BLE_GAP_SEC_STATUS_PAIRING_NOT_SUPP,NULL,NULL);
APP_ERROR_CHECK(err_code);
the code above is used on the BLE_GAP_EVT_SEC_PARAMS_REQUEST. at the debug point(BLE_GAP_EVT_SEC_PARAMS_REQUEST), i found peer_params.min_key_size was zero.
