/** * Copyright (c) 2012 - 2018, Nordic Semiconductor ASA * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright notice, this * list of conditions and the following disclaimer. * * 2. Redistributions in binary form, except as embedded into a Nordic * Semiconductor ASA integrated circuit in a product or a software update for * such product, must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other * materials provided with the distribution. * * 3. Neither the name of Nordic Semiconductor ASA nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * 4. This software, with or without modification, must only be used with a * Nordic Semiconductor ASA integrated circuit. * * 5. Any software provided in binary form under this license must not be reverse * engineered, decompiled, modified and/or disassembled. * * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* Attention! * To maintain compliance with Nordic Semiconductor ASA's Bluetooth profile * qualification listings, this section of source code must not be modified. */ #include "sdk_common.h" #if NRF_MODULE_ENABLED(BLE_LLS) #include "ble_lls.h" #include #include "ble_hci.h" #include "ble_srv_common.h" /**@brief Function for handling the Connect event. * * @param[in] p_lls Link Loss Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_connect(ble_lls_t * p_lls, ble_evt_t const * p_ble_evt) { // Link reconnected, notify application with a no_alert event ble_lls_evt_t evt; p_lls->conn_handle = p_ble_evt->evt.gap_evt.conn_handle; evt.evt_type = BLE_LLS_EVT_LINK_LOSS_ALERT; evt.params.alert_level = BLE_CHAR_ALERT_LEVEL_NO_ALERT; p_lls->evt_handler(p_lls, &evt); } /**@brief Function for handling the Disconnect event. * * @param[in] p_lls Link Loss Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_disconnect(ble_lls_t * p_lls, ble_evt_t const * p_ble_evt) { uint8_t reason = p_ble_evt->evt.gap_evt.params.disconnected.reason; if (reason == BLE_HCI_CONNECTION_TIMEOUT) { // Link loss detected, notify application uint32_t err_code; ble_lls_evt_t evt; evt.evt_type = BLE_LLS_EVT_LINK_LOSS_ALERT; err_code = ble_lls_alert_level_get(p_lls, &evt.params.alert_level); if (err_code == NRF_SUCCESS) { p_lls->evt_handler(p_lls, &evt); } else { if (p_lls->error_handler != NULL) { p_lls->error_handler(err_code); } } } } /**@brief Function for handling the Authentication Status event. * * @param[in] p_lls Link Loss Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_auth_status(ble_lls_t * p_lls, ble_evt_t const * p_ble_evt) { if (p_ble_evt->evt.gap_evt.params.auth_status.auth_status == BLE_GAP_SEC_STATUS_SUCCESS) { ble_lls_evt_t evt; evt.evt_type = BLE_LLS_EVT_LINK_LOSS_ALERT; evt.params.alert_level = BLE_CHAR_ALERT_LEVEL_NO_ALERT; p_lls->evt_handler(p_lls, &evt); } } void ble_lls_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) { ble_lls_t * p_lls = (ble_lls_t *)p_context; if (p_lls == NULL || p_ble_evt == NULL) { return; } switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: on_connect(p_lls, p_ble_evt); break; case BLE_GAP_EVT_DISCONNECTED: on_disconnect(p_lls, p_ble_evt); break; case BLE_GAP_EVT_AUTH_STATUS: on_auth_status(p_lls, p_ble_evt); break; default: // No implementation needed. break; } } /**@brief Function for adding Alert Level characteristics. * * @param[in] p_lls Link Loss Service structure. * @param[in] p_lls_init Information needed to initialize the service. * * @return NRF_SUCCESS on success, otherwise an error code. */ static uint32_t alert_level_char_add(ble_lls_t * p_lls, const ble_lls_init_t * p_lls_init) { ble_gatts_char_md_t char_md; ble_gatts_attr_t attr_char_value; ble_uuid_t ble_uuid; ble_gatts_attr_md_t attr_md; uint8_t initial_alert_level; memset(&char_md, 0, sizeof(char_md)); char_md.char_props.read = 1; char_md.char_props.write = 1; char_md.p_char_user_desc = NULL; char_md.p_char_pf = NULL; char_md.p_user_desc_md = NULL; char_md.p_cccd_md = NULL; char_md.p_sccd_md = NULL; BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_ALERT_LEVEL_CHAR); memset(&attr_md, 0, sizeof(attr_md)); attr_md.read_perm = p_lls_init->lls_attr_md.read_perm; attr_md.write_perm = p_lls_init->lls_attr_md.write_perm; attr_md.vloc = BLE_GATTS_VLOC_STACK; attr_md.rd_auth = 0; attr_md.wr_auth = 0; attr_md.vlen = 0; memset(&attr_char_value, 0, sizeof(attr_char_value)); initial_alert_level = p_lls_init->initial_alert_level; attr_char_value.p_uuid = &ble_uuid; attr_char_value.p_attr_md = &attr_md; attr_char_value.init_len = sizeof (uint8_t); attr_char_value.init_offs = 0; attr_char_value.max_len = sizeof (uint8_t); attr_char_value.p_value = &initial_alert_level; return sd_ble_gatts_characteristic_add(p_lls->service_handle, &char_md, &attr_char_value, &p_lls->alert_level_handles); } uint32_t ble_lls_init(ble_lls_t * p_lls, const ble_lls_init_t * p_lls_init) { uint32_t err_code; ble_uuid_t ble_uuid; if (p_lls == NULL || p_lls_init == NULL) { return NRF_ERROR_NULL; } if (p_lls_init->evt_handler == NULL) { return NRF_ERROR_INVALID_PARAM; } // Initialize service structure p_lls->evt_handler = p_lls_init->evt_handler; p_lls->error_handler = p_lls_init->error_handler; // Add service BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_LINK_LOSS_SERVICE); err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_lls->service_handle); if (err_code != NRF_SUCCESS) { return err_code; } // Add alert level characteristic return alert_level_char_add(p_lls, p_lls_init); } uint32_t ble_lls_alert_level_get(ble_lls_t * p_lls, uint8_t * p_alert_level) { ble_gatts_value_t gatts_value; if (p_lls == NULL || p_alert_level == NULL) { return NRF_ERROR_NULL; } // Initialize value struct. memset(&gatts_value, 0, sizeof(gatts_value)); gatts_value.len = sizeof(uint8_t); gatts_value.offset = 0; gatts_value.p_value = p_alert_level; return sd_ble_gatts_value_get(p_lls->conn_handle, p_lls->alert_level_handles.value_handle, &gatts_value); } #endif // NRF_MODULE_ENABLED(BLE_LLS)