/** * Copyright (c) 2015 - 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. * */ #include "ble_lns.h" #include "ble_ln_db.h" #include "ble_ln_common.h" #include "sdk_common.h" #define NRF_LOG_MODULE_NAME ble_lns #include "nrf_log.h" NRF_LOG_MODULE_REGISTER(); // Location and Speed flag bits #define LOC_SPEED_FLAG_INSTANT_SPEED_PRESENT (0x01 << 0) /**< Instantaneous Speed Present bit. */ #define LOC_SPEED_FLAG_TOTAL_DISTANCE_PRESENT (0x01 << 1) /**< Total Distance Present bit. */ #define LOC_SPEED_FLAG_LOCATION_PRESENT (0x01 << 2) /**< Location Present bit. */ #define LOC_SPEED_FLAG_ELEVATION_PRESENT (0x01 << 3) /**< Elevation Present bit. */ #define LOC_SPEED_FLAG_HEADING_PRESENT (0x01 << 4) /**< Heading Present bit. */ #define LOC_SPEED_FLAG_ROLLING_TIME_PRESENT (0x01 << 5) /**< Rolling Time Present bit. */ #define LOC_SPEED_FLAG_UTC_TIME_PRESENT (0x01 << 6) /**< UTC Time Present bit. */ #define LOC_SPEED_FLAG_POSITION_STATUS (0x03 << 7) /**< Position Status bits(2). */ #define LOC_SPEED_FLAG_SPEED_AND_DIST_FORMAT (0x01 << 9) /**< Speed and Distance Format. */ #define LOC_SPEED_FLAG_ELEVATION_SOURCE (0x03 << 10) /**< Elevation Source bits(2). */ #define LOC_SPEED_FLAG_HEADING_SOURCE (0x01 << 12) /**< Heading Source. */ // Position Quality flag bits #define POS_QUAL_FLAG_NUM_SATS_IN_SOLUTION_PRESENT (0x01 << 0) /**< Number of Satellites in Solution Present bit. */ #define POS_QUAL_FLAG_NUM_SATS_IN_VIEW_PRESENT (0x01 << 1) /**< Number of Satellites in View Present bit. */ #define POS_QUAL_FLAG_TIME_TO_FIRST_FIX_PRESESNT (0x01 << 2) /**< Time to First Fix Present bit. */ #define POS_QUAL_FLAG_EHPE_PRESENT (0x01 << 3) /**< EHPE Present bit. */ #define POS_QUAL_FLAG_EVPE_PRESENT (0x01 << 4) /**< EVPE Present bit. */ #define POS_QUAL_FLAG_HDOP_PRESENT (0x01 << 5) /**< HDOP Present bit. */ #define POS_QUAL_FLAG_VDOP_PRESENT (0x01 << 6) /**< VDOP Present bit. */ #define POS_QUAL_FLAG_POSITION_STATUS (0x03 << 7) /**< Position Status bits(2). */ // Navigation flag bits #define NAV_FLAG_REMAINING_DIST_PRESENT (0x01 << 0) /**< Remaining Distance Present bit. */ #define NAV_FLAG_REAMINGING_VERT_DIST_PRESESNT (0x01 << 1) /**< Remaining Vertical Distance Present bit . */ #define NAV_FLAG_ETA_PRESENT (0x01 << 2) /**< Estimated Time of Arrival Present bit. */ #define NAV_FLAG_POSITION_STATUS (0x03 << 3) /**< Position Status bits(2). */ #define NAV_FLAG_HEADING_SOURCE (0x01 << 5) /**< Heading Source bit. */ #define NAV_FLAG_NAVIGATION_INDICATOR_TYPE (0x01 << 6) /**< Navigation Indicator Type bit. */ #define NAV_FLAG_WAYPOINT_REACHED (0x01 << 7) /**< Waypoint Reached bit. */ #define NAV_FLAG_DESTINATION_REACHED (0x01 << 8) /**< Destination Reached bit. */ #define BLE_LNS_NAV_MAX_LEN 19 /**< The length of a navigation notification when all features are enabled. See @ref ble_lns_navigation_t to see what this represents, or check https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.navigation.xml. */ static void notification_buffer_process(ble_lns_t * p_lns) { notification_t * p_notification; // See if a notification is pending if (p_lns->pending_loc_speed_notifications[0].is_pending == true) { p_notification = &p_lns->pending_loc_speed_notifications[0]; } else if (p_lns->pending_loc_speed_notifications[1].is_pending == true) { p_notification = &p_lns->pending_loc_speed_notifications[1]; } else if (p_lns->pending_navigation_notification.is_pending == true) { p_notification = &p_lns->pending_navigation_notification; } else { p_notification = NULL; } // send the notification if necessary if (p_notification != NULL) { uint32_t err_code; ble_gatts_hvx_params_t hvx_params; memset(&hvx_params, 0, sizeof(hvx_params)); uint16_t hvx_len = p_notification->len; hvx_params.handle = p_notification->handle; hvx_params.type = BLE_GATT_HVX_NOTIFICATION; hvx_params.offset = 0; hvx_params.p_len = &hvx_len; hvx_params.p_data = &p_notification->data[0]; err_code = sd_ble_gatts_hvx(p_lns->conn_handle, &hvx_params); if ((err_code == NRF_SUCCESS) && (hvx_len == p_notification->len)) { p_notification->is_pending = false; } } } /**@brief Connect event handler. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_connect(ble_lns_t * p_lns, ble_evt_t const * p_ble_evt) { p_lns->conn_handle = p_ble_evt->evt.gap_evt.conn_handle; // clear pending notifications p_lns->pending_loc_speed_notifications[0].is_pending = false; p_lns->pending_loc_speed_notifications[1].is_pending = false; p_lns->pending_navigation_notification.is_pending = false; } /**@brief Disconnect event handler. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_disconnect(ble_lns_t * p_lns, ble_evt_t const * p_ble_evt) { if (p_lns->conn_handle != p_ble_evt->evt.gatts_evt.conn_handle) { return; } p_lns->conn_handle = BLE_CONN_HANDLE_INVALID; } /**@brief Handle write events to the control point cccd. * * @param[in] p_lncp Location and Navigation Service structure. * @param[in] p_evt_write Write event received from the BLE stack. */ static void on_ctrl_pt_cccd_write(ble_lns_t * p_lns, ble_gatts_evt_write_t const * p_evt_write) { if (p_evt_write->len == BLE_CCCD_VALUE_LEN) { if (p_lns->evt_handler != NULL) { ble_lns_evt_t evt; if (ble_srv_is_indication_enabled(p_evt_write->data)) { evt.evt_type = BLE_LNS_CTRLPT_EVT_INDICATION_ENABLED; } else { evt.evt_type = BLE_LNS_CTRLPT_EVT_INDICATION_DISABLED; } p_lns->evt_handler(p_lns, &evt); } } } /**@brief Handle write events to the Location and Speed cccd. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_evt_write Write event received from the BLE stack. */ static void on_loc_speed_cccd_write(ble_lns_t * p_lns, ble_gatts_evt_write_t const * p_evt_write) { if (p_evt_write->len == BLE_CCCD_VALUE_LEN) { // CCCD written, update notification state p_lns->is_loc_speed_notification_enabled = ble_srv_is_notification_enabled(p_evt_write->data); if (p_lns->evt_handler != NULL) { ble_lns_evt_t evt; if (p_lns->is_loc_speed_notification_enabled) { evt.evt_type = BLE_LNS_LOC_SPEED_EVT_NOTIFICATION_ENABLED; } else { evt.evt_type = BLE_LNS_LOC_SPEED_EVT_NOTIFICATION_DISABLED; } p_lns->evt_handler(p_lns, &evt); } } } /**@brief Handle write events to the navigation cccd. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_evt_write Write event received from the BLE stack. */ static void on_nav_cccd_write(ble_lns_t * p_lns, ble_gatts_evt_write_t const * p_evt_write) { if (p_evt_write->len == BLE_CCCD_VALUE_LEN) { p_lns->is_nav_notification_enabled = ble_srv_is_notification_enabled(p_evt_write->data); if (p_lns->evt_handler != NULL) { ble_lns_evt_t evt; if (p_lns->is_nav_notification_enabled) { evt.evt_type = BLE_LNS_NAVIGATION_EVT_NOTIFICATION_ENABLED; } else { evt.evt_type = BLE_LNS_NAVIGATION_EVT_NOTIFICATION_DISABLED; } p_lns->evt_handler(p_lns, &evt); } } } /**@brief Write event handler. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_ble_evt Event received from the BLE stack. */ static void on_write(ble_lns_t * p_lns, ble_evt_t const * p_ble_evt) { if (p_lns->conn_handle != p_ble_evt->evt.gatts_evt.conn_handle) { return; } ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; if (p_evt_write->handle == p_lns->ctrlpt_handles.cccd_handle) { on_ctrl_pt_cccd_write(p_lns, p_evt_write); } else if (p_evt_write->handle == p_lns->loc_speed_handles.cccd_handle) { on_loc_speed_cccd_write(p_lns, p_evt_write); } else if (p_evt_write->handle == p_lns->navigation_handles.cccd_handle) { on_nav_cccd_write(p_lns, p_evt_write); } } /**@brief Tx Complete event handler. This is used to retry sending a packet. * * @details Tx Complete event handler. * Handles WRITE events from the BLE stack and if an indication was pending try sending it * again. * * @param[in] p_lns Location navigation structure. */ static void on_tx_complete(ble_lns_t * p_lns) { notification_buffer_process(p_lns); } /**@brief Encode position quality. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_pos_qual Position quality data to be encoded. * @param[out] p_encoded_buffer Buffer where the encoded data will be written. * * @return Size of encoded data. */ static uint8_t pos_qual_encode(ble_lns_t const * p_lns, ble_lns_pos_quality_t const * p_pos_qual, uint8_t * p_encoded_buffer) { uint16_t flags = 0; uint8_t len = 2; // flags are added at last flags |= ((uint16_t)p_pos_qual->position_status << 7) & POS_QUAL_FLAG_POSITION_STATUS; if (p_pos_qual->number_of_satellites_in_solution_present) { flags |= POS_QUAL_FLAG_NUM_SATS_IN_SOLUTION_PRESENT; p_encoded_buffer[len++] = p_pos_qual->number_of_satellites_in_solution; } if (p_pos_qual->number_of_satellites_in_view_present) { flags |= POS_QUAL_FLAG_NUM_SATS_IN_VIEW_PRESENT; p_encoded_buffer[len++] = p_pos_qual->number_of_satellites_in_view; } if (p_pos_qual->time_to_first_fix_present) { flags |= POS_QUAL_FLAG_TIME_TO_FIRST_FIX_PRESESNT; len += uint16_encode(p_pos_qual->time_to_first_fix, &p_encoded_buffer[len]); } if (p_pos_qual->ehpe_present) { flags |= POS_QUAL_FLAG_EHPE_PRESENT; len += uint32_encode(p_pos_qual->ehpe, &p_encoded_buffer[len]); } if (p_pos_qual->evpe_present) { flags |= POS_QUAL_FLAG_EVPE_PRESENT; len += uint32_encode(p_pos_qual->evpe, &p_encoded_buffer[len]); } if (p_pos_qual->hdop_present) { flags |= POS_QUAL_FLAG_HDOP_PRESENT; p_encoded_buffer[len++] = p_pos_qual->hdop; } if (p_pos_qual->vdop_present) { flags |= POS_QUAL_FLAG_VDOP_PRESENT; p_encoded_buffer[len++] = p_pos_qual->vdop; } // Flags field uint16_encode(flags, &p_encoded_buffer[0]); //lint !e534 "Ignoring return value of function" return len; } /**@brief Encode Location and Speed data packet 1 * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_loc_speed Location and Speed data to be encoded. * @param[out] p_encoded_buffer Pointer to buffer buffer where encoded data will be written. * * @return Size of encoded data. * */ static uint8_t loc_speed_encode_packet1(ble_lns_t const * p_lns, ble_lns_loc_speed_t const * p_loc_speed, uint8_t * p_encoded_buffer) { uint16_t flags = 0; uint8_t len = 2; ble_lncp_mask_t const mask = ble_lncp_mask_get(&p_lns->ctrl_pt); // Instantaneous Speed if (p_lns->available_features & BLE_LNS_FEATURE_INSTANT_SPEED_SUPPORTED) { if (p_loc_speed->instant_speed_present && !mask.instantaneous_speed) { flags |= LOC_SPEED_FLAG_INSTANT_SPEED_PRESENT; flags |= ((uint16_t)p_loc_speed->data_format<<9) & LOC_SPEED_FLAG_SPEED_AND_DIST_FORMAT; len += uint16_encode(p_loc_speed->instant_speed, &p_encoded_buffer[len]); } } // Total Distance if (p_lns->available_features & BLE_LNS_FEATURE_TOTAL_DISTANCE_SUPPORTED) { if (p_loc_speed->total_distance_present && !mask.total_distance) { uint32_t const total_distance = ble_lncp_total_distance_get(&p_lns->ctrl_pt); flags |= LOC_SPEED_FLAG_TOTAL_DISTANCE_PRESENT; len += uint24_encode(total_distance, &p_encoded_buffer[len]); } } // Location if (p_lns->available_features & BLE_LNS_FEATURE_LOCATION_SUPPORTED) { if (p_loc_speed->location_present && !mask.location) { flags |= LOC_SPEED_FLAG_LOCATION_PRESENT; flags |= ((uint16_t)p_loc_speed->position_status <<7) & LOC_SPEED_FLAG_POSITION_STATUS; len += uint32_encode(p_loc_speed->latitude, &p_encoded_buffer[len]); len += uint32_encode(p_loc_speed->longitude, &p_encoded_buffer[len]); } } // Flags field uint16_encode(flags, &p_encoded_buffer[0]); //lint !e534 "Ignoring return value of function" return len; } /**@brief Encode Location and Speed data packet 2 * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_loc_speed Location and Speed data to be encoded. * @param[out] p_encoded_buffer Pointer to buffer buffer where encoded data will be written. * * @return Size of encoded data. * */ static uint8_t loc_speed_encode_packet2(ble_lns_t const * p_lns, ble_lns_loc_speed_t const * p_loc_speed, uint8_t * p_encoded_buffer) { uint16_t flags = 0; uint8_t len = 2; ble_lncp_mask_t const mask = ble_lncp_mask_get(&p_lns->ctrl_pt); // Elevation if (p_lns->available_features & BLE_LNS_FEATURE_ELEVATION_SUPPORTED) { if (p_loc_speed->elevation_present && !mask.elevation) { uint32_t const elevation = ble_lncp_elevation_get(&p_lns->ctrl_pt); flags |= LOC_SPEED_FLAG_ELEVATION_PRESENT; flags |= ((uint16_t) p_loc_speed->elevation_source << 10) & LOC_SPEED_FLAG_ELEVATION_SOURCE; len += uint24_encode(elevation, &p_encoded_buffer[len]); } } // Heading if (p_lns->available_features & BLE_LNS_FEATURE_HEADING_SUPPORTED) { if (p_loc_speed->heading_present && !mask.heading) { flags |= LOC_SPEED_FLAG_HEADING_PRESENT; flags |= ((uint16_t) p_loc_speed->heading_source << 12) & LOC_SPEED_FLAG_HEADING_SOURCE; len += uint16_encode(p_loc_speed->heading, &p_encoded_buffer[len]); } } // Rolling Time if (p_lns->available_features & BLE_LNS_FEATURE_ROLLING_TIME_SUPPORTED) { if ((p_loc_speed->rolling_time_present && !mask.rolling_time)) { flags |= LOC_SPEED_FLAG_ROLLING_TIME_PRESENT; p_encoded_buffer[len++] = p_loc_speed->rolling_time; } } // UTC Time if (p_lns->available_features & BLE_LNS_FEATURE_UTC_TIME_SUPPORTED) { if ((p_loc_speed->utc_time_time_present && !mask.utc_time)) { flags |= LOC_SPEED_FLAG_UTC_TIME_PRESENT; len += ble_date_time_encode(&p_loc_speed->utc_time, &p_encoded_buffer[len]); } } // Flags field uint16_encode(flags, &p_encoded_buffer[0]); //lint !e534 "Ignoring return value of function" return len; } /**@brief Encode Navigation data. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_navigation Navigation data to be encoded. * @param[out] p_encoded_buffer Buffer where the encoded data will be written. * * @return Size of encoded data. */ static uint8_t navigation_encode(ble_lns_t const * p_lns, ble_lns_navigation_t const * p_navigation, uint8_t * p_encoded_buffer) { uint16_t flags = 0; uint8_t len = 2; // Bearing len += uint16_encode(p_navigation->bearing, &p_encoded_buffer[len]); // Heading len += uint16_encode(p_navigation->heading, &p_encoded_buffer[len]); // Remaining Distance if (p_lns->available_features & BLE_LNS_FEATURE_REMAINING_DISTANCE_SUPPORTED) { if (p_navigation->remaining_dist_present) { flags |= NAV_FLAG_REMAINING_DIST_PRESENT; p_encoded_buffer[len++] = ((p_navigation->remaining_distance >> 0) & 0xFF); p_encoded_buffer[len++] = ((p_navigation->remaining_distance >> 8) & 0xFF); p_encoded_buffer[len++] = ((p_navigation->remaining_distance >> 16) & 0xFF); } } // Remaining Vertical Distance if (p_lns->available_features & BLE_LNS_FEATURE_REMAINING_VERT_DISTANCE_SUPPORTED) { if (p_navigation->remaining_vert_dist_present) { flags |= NAV_FLAG_REAMINGING_VERT_DIST_PRESESNT; p_encoded_buffer[len++] = ((p_navigation->remaining_vert_distance >> 0) & 0xFF); p_encoded_buffer[len++] = ((p_navigation->remaining_vert_distance >> 8) & 0xFF); p_encoded_buffer[len++] = ((p_navigation->remaining_vert_distance >> 16) & 0xFF); } } // Estimated Time of Arrival if (p_lns->available_features & BLE_LNS_FEATURE_EST_TIME_OF_ARRIVAL_SUPPORTED) { if (p_navigation->eta_present) { flags |= NAV_FLAG_ETA_PRESENT; len += ble_date_time_encode(&p_navigation->eta, &p_encoded_buffer[len]); } } flags |= ((uint16_t)p_navigation->position_status <<3) & NAV_FLAG_POSITION_STATUS; flags |= ((uint16_t)p_navigation->heading_source <<5) & NAV_FLAG_HEADING_SOURCE; flags |= ((uint16_t)p_navigation->navigation_indicator_type<<6)& NAV_FLAG_NAVIGATION_INDICATOR_TYPE; flags |= ((uint16_t)p_navigation->waypoint_reached <<7)& NAV_FLAG_WAYPOINT_REACHED; flags |= ((uint16_t)p_navigation->destination_reached <<8)& NAV_FLAG_DESTINATION_REACHED; // Flags field uint16_encode(flags, &p_encoded_buffer[0]); //lint !e534 "Ignoring return value of function" return len; } /**@brief Add Location and Navigation Feature characteristic. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_lns_init Information needed to initialize the service. * * @return NRF_SUCCESS on success, otherwise an error code. */ static ret_code_t loc_and_nav_feature_char_add(ble_lns_t * p_lns, ble_lns_init_t const * p_lns_init) { uint8_t init_value_encoded[sizeof(uint32_t)]; uint8_t len; ble_add_char_params_t add_char_params; len = uint32_encode(p_lns_init->available_features, init_value_encoded); memset(&add_char_params, 0, sizeof(add_char_params)); add_char_params.uuid = BLE_UUID_LN_FEATURE_CHAR; add_char_params.max_len = len; add_char_params.init_len = len; add_char_params.p_init_value = &init_value_encoded[0]; add_char_params.char_props.read = true; add_char_params.read_access = p_lns_init->loc_nav_feature_security_req_read_perm; return characteristic_add(p_lns->service_handle, &add_char_params, &p_lns->feature_handles); } /**@brief Add Location and Speed characteristic. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_lns_init Information needed to initialize the service. * * @return NRF_SUCCESS on success, otherwise an error code. */ static ret_code_t loc_speed_char_add(ble_lns_t * p_lns, ble_lns_init_t const * p_lns_init) { uint8_t encoded_initial_loc_speed1[BLE_GATT_ATT_MTU_DEFAULT]; uint8_t len; ble_add_char_params_t add_char_params; len = loc_speed_encode_packet1(p_lns, p_lns_init->p_location_speed, &encoded_initial_loc_speed1[0]); memset(&add_char_params, 0, sizeof(add_char_params)); add_char_params.uuid = BLE_UUID_LN_LOCATION_AND_SPEED_CHAR; add_char_params.max_len = BLE_GATT_ATT_MTU_DEFAULT ; add_char_params.init_len = len; add_char_params.p_init_value = &encoded_initial_loc_speed1[0]; add_char_params.is_var_len = true; add_char_params.char_props.notify = true; add_char_params.cccd_write_access = p_lns_init->loc_speed_security_req_cccd_write_perm; return characteristic_add(p_lns->service_handle, &add_char_params, &p_lns->loc_speed_handles); } /**@brief Add Location and Navigation position quality characteristic. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_lns_init Information needed to initialize the service. * * @return NRF_SUCCESS on success, otherwise an error code. */ static ret_code_t pos_quality_char_add(ble_lns_t * p_lns, ble_lns_init_t const * p_lns_init) { uint8_t len; uint8_t init_value_encoded[BLE_GATT_ATT_MTU_DEFAULT]; ble_add_char_params_t add_char_params; len = pos_qual_encode(p_lns, p_lns_init->p_position_quality, init_value_encoded); memset(&add_char_params, 0, sizeof(add_char_params)); add_char_params.uuid = BLE_UUID_LN_POSITION_QUALITY_CHAR; add_char_params.max_len = BLE_GATT_ATT_MTU_DEFAULT ; add_char_params.init_len = len; add_char_params.p_init_value = init_value_encoded; add_char_params.char_props.read = true; add_char_params.read_access = p_lns_init->position_quality_security_req_read_perm; return characteristic_add(p_lns->service_handle, &add_char_params, &p_lns->pos_qual_handles); } /**@brief Add Navigation characteristic. * * @param[in] p_lns Location and Navigation Service structure. * @param[in] p_lns_init Information needed to initialize the service. * * @return NRF_SUCCESS on success, otherwise an error code. */ static ret_code_t navigation_char_add(ble_lns_t * p_lns, ble_lns_init_t const * p_lns_init) { ble_add_char_params_t add_char_params; memset(&add_char_params, 0, sizeof(add_char_params)); add_char_params.uuid = BLE_UUID_LN_NAVIGATION_CHAR; add_char_params.max_len = BLE_LNS_NAV_MAX_LEN; add_char_params.init_len = 0; add_char_params.p_init_value = NULL; add_char_params.char_props.notify = true; add_char_params.cccd_write_access = p_lns_init->navigation_security_req_cccd_write_perm; return characteristic_add(p_lns->service_handle, &add_char_params, &p_lns->navigation_handles); } /** @brief Check if there is a mismatch in initialization parameters. * * @details It is possible to give an input which has an internal mismatch. Such a mismatch can arise in two different ways. * One possibility is a mismatch between the characteristic present indicators and the available features specified. * The other mismatch arises when no pointer to the characteristic data structure is specified. * * @param[in] p_lns_init The init structure which will be checked * * @return false if there is no mismatch. true if there is a mismatch */ static bool init_param_mismatch_present(ble_lns_init_t const * p_lns_init) { if (p_lns_init->is_position_quality_present == false) { if (p_lns_init->available_features & (BLE_LNS_FEATURE_NUM_SATS_IN_SOLUTION_SUPPORTED | BLE_LNS_FEATURE_NUM_SATS_IN_VIEW_SUPPORTED | BLE_LNS_FEATURE_TIME_TO_FIRST_FIX_SUPPORTED | BLE_LNS_FEATURE_EST_HORZ_POS_ERROR_SUPPORTED | BLE_LNS_FEATURE_EST_VERT_POS_ERROR_SUPPORTED | BLE_LNS_FEATURE_HORZ_DILUTION_OF_PRECISION_SUPPORTED | BLE_LNS_FEATURE_VERT_DILUTION_OF_PRECISION_SUPPORTED) ) { return true; } if (p_lns_init->p_position_quality != NULL) { return true; } } else if (p_lns_init->is_position_quality_present == true) { if (p_lns_init->p_position_quality == NULL) { return true; } } if (p_lns_init->is_control_point_present == false) { if (p_lns_init->available_features & (BLE_LNS_FEATURE_LOC_AND_SPEED_CONTENT_MASKING_SUPPORTED | BLE_LNS_FEATURE_FIX_RATE_SETTING_SUPPORTED | BLE_LNS_FEATURE_ELEVATION_SETTING_SUPPORTED) ) { return true; } } if (p_lns_init->is_navigation_present == false) { if (p_lns_init->available_features & (BLE_LNS_FEATURE_REMAINING_DISTANCE_SUPPORTED | BLE_LNS_FEATURE_REMAINING_VERT_DISTANCE_SUPPORTED | BLE_LNS_FEATURE_EST_TIME_OF_ARRIVAL_SUPPORTED) ) { return true; } if (p_lns_init->p_navigation != NULL) { return true; } } else if (p_lns_init->is_navigation_present == true) { if (p_lns_init->p_navigation == NULL) { return true; } } // location and speed must always be specified if (p_lns_init->p_location_speed == NULL) { return true; } return false; } void ble_lns_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) { VERIFY_PARAM_NOT_NULL_VOID(p_context); VERIFY_PARAM_NOT_NULL_VOID(p_ble_evt); ble_lns_t * p_lns = (ble_lns_t *)p_context; ble_lncp_on_ble_evt(&p_lns->ctrl_pt, p_ble_evt); switch (p_ble_evt->header.evt_id) { case BLE_GAP_EVT_CONNECTED: on_connect(p_lns, p_ble_evt); break; case BLE_GAP_EVT_DISCONNECTED: on_disconnect(p_lns, p_ble_evt); break; case BLE_GATTS_EVT_WRITE: on_write(p_lns, p_ble_evt); break; case BLE_GATTS_EVT_HVN_TX_COMPLETE: on_tx_complete(p_lns); break; default: // no implementation break; } } ret_code_t ble_lns_init(ble_lns_t * p_lns, ble_lns_init_t const * p_lns_init) { VERIFY_PARAM_NOT_NULL(p_lns); VERIFY_PARAM_NOT_NULL(p_lns_init); if (init_param_mismatch_present(p_lns_init) == true) { return NRF_ERROR_INVALID_PARAM; } uint32_t err_code; ble_uuid_t service_uuid; ble_lncp_init_t lncp_init; // Initialize service structure p_lns->evt_handler = p_lns_init->evt_handler; p_lns->error_handler = p_lns_init->error_handler; p_lns->conn_handle = BLE_CONN_HANDLE_INVALID; p_lns->available_features = p_lns_init->available_features; p_lns->is_navigation_present = p_lns_init->is_navigation_present; // clear pending notifications p_lns->pending_loc_speed_notifications[0].is_pending = false; p_lns->pending_loc_speed_notifications[1].is_pending = false; p_lns->pending_navigation_notification.is_pending = false; p_lns->p_location_speed = p_lns_init->p_location_speed; p_lns->p_position_quality = p_lns_init->p_position_quality; p_lns->p_navigation = p_lns_init->p_navigation; p_lns->is_loc_speed_notification_enabled = false; p_lns->is_nav_notification_enabled = false; ble_ln_db_init(); // Add service BLE_UUID_BLE_ASSIGN(service_uuid, BLE_UUID_LOCATION_AND_NAVIGATION_SERVICE); err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &service_uuid, &p_lns->service_handle); VERIFY_SUCCESS(err_code); // Add location and navigation feature characteristic err_code = loc_and_nav_feature_char_add(p_lns, p_lns_init); VERIFY_SUCCESS(err_code); // Add location and speed characteristic err_code = loc_speed_char_add(p_lns, p_lns_init); VERIFY_SUCCESS(err_code); if (p_lns_init->is_position_quality_present) { // Add Position quality characteristic err_code = pos_quality_char_add(p_lns, p_lns_init); VERIFY_SUCCESS(err_code); } else { p_lns->pos_qual_handles.cccd_handle = BLE_GATT_HANDLE_INVALID; p_lns->pos_qual_handles.sccd_handle = BLE_GATT_HANDLE_INVALID; p_lns->pos_qual_handles.user_desc_handle = BLE_GATT_HANDLE_INVALID; p_lns->pos_qual_handles.value_handle = BLE_GATT_HANDLE_INVALID; } if (p_lns_init->is_navigation_present) { // Add navigation characteristic err_code = navigation_char_add(p_lns, p_lns_init); VERIFY_SUCCESS(err_code); } else { p_lns->navigation_handles.cccd_handle = BLE_GATT_HANDLE_INVALID; p_lns->navigation_handles.sccd_handle = BLE_GATT_HANDLE_INVALID; p_lns->navigation_handles.user_desc_handle = BLE_GATT_HANDLE_INVALID; p_lns->navigation_handles.value_handle = BLE_GATT_HANDLE_INVALID; } if (p_lns_init->is_control_point_present) { lncp_init.error_handler = p_lns_init->error_handler; lncp_init.evt_handler = p_lns_init->lncp_evt_handler; lncp_init.write_perm = p_lns_init->ctrl_point_security_req_write_perm; lncp_init.cccd_write_perm = p_lns_init->ctrl_point_security_req_cccd_write_perm; lncp_init.available_features = p_lns_init->available_features; lncp_init.is_position_quality_present = p_lns_init->is_position_quality_present; lncp_init.is_navigation_present = p_lns_init->is_navigation_present; lncp_init.total_distance = p_lns_init->p_location_speed->total_distance; lncp_init.elevation = p_lns_init->p_location_speed->elevation; lncp_init.service_handle = p_lns->service_handle; lncp_init.navigation_handles = p_lns->navigation_handles; // Add control pointer characteristic err_code = ble_lncp_init(&p_lns->ctrl_pt, &lncp_init); VERIFY_SUCCESS(err_code); memcpy(&p_lns->ctrlpt_handles, &p_lns->ctrl_pt.ctrlpt_handles, sizeof(ble_gatts_char_handles_t)); } NRF_LOG_DEBUG("Initialized"); return NRF_SUCCESS; } ret_code_t ble_lns_loc_speed_send(ble_lns_t * p_lns) { VERIFY_PARAM_NOT_NULL(p_lns); if (p_lns->conn_handle == BLE_CONN_HANDLE_INVALID) { return NRF_ERROR_INVALID_STATE; } if (!p_lns->is_loc_speed_notification_enabled) { return NRF_ERROR_INVALID_STATE; } notification_t * notif1 = &p_lns->pending_loc_speed_notifications[0]; notification_t * notif2 = &p_lns->pending_loc_speed_notifications[1]; // clear previous unsent data. Previous data is invalid. notif1->is_pending = false; notif2->is_pending = false; // check if it is necessary to send packet 1 if (p_lns->available_features & (BLE_LNS_FEATURE_INSTANT_SPEED_SUPPORTED | BLE_LNS_FEATURE_TOTAL_DISTANCE_SUPPORTED | BLE_LNS_FEATURE_LOCATION_SUPPORTED)) { // encode notif1->len = loc_speed_encode_packet1(p_lns, p_lns->p_location_speed, ¬if1->data[0]); notif1->handle = p_lns->loc_speed_handles.value_handle; notif1->is_pending = true; // send notification_buffer_process(p_lns); } // check if it is necessary to send packet 2 if (p_lns->available_features & (BLE_LNS_FEATURE_ELEVATION_SUPPORTED | BLE_LNS_FEATURE_HEADING_SUPPORTED | BLE_LNS_FEATURE_ROLLING_TIME_SUPPORTED | BLE_LNS_FEATURE_UTC_TIME_SUPPORTED)) { notif2->len = loc_speed_encode_packet2(p_lns, p_lns->p_location_speed, ¬if2->data[0]); notif2->handle = p_lns->loc_speed_handles.value_handle; notif2->is_pending = true; // send notification_buffer_process(p_lns); } return NRF_SUCCESS; } ret_code_t ble_lns_navigation_send(ble_lns_t * p_lns) { VERIFY_PARAM_NOT_NULL(p_lns); if (p_lns->conn_handle == BLE_CONN_HANDLE_INVALID) { return NRF_ERROR_INVALID_STATE; } notification_t * notif = &p_lns->pending_navigation_notification; // clear previous unsent data. Previous data is invalid. notif->is_pending = false; if (!p_lns->is_navigation_present) { return NRF_ERROR_NOT_SUPPORTED; } if (!p_lns->is_nav_notification_enabled) { return NRF_ERROR_INVALID_STATE; } if (!ble_lncp_is_navigation_running(&p_lns->ctrl_pt)) { return NRF_ERROR_INVALID_STATE; } notif->len = navigation_encode(p_lns, p_lns->p_navigation, ¬if->data[0]); notif->handle = p_lns->navigation_handles.value_handle; notif->is_pending = true; notification_buffer_process(p_lns); return NRF_SUCCESS; } ret_code_t ble_lns_add_route(ble_lns_t * p_lns, ble_lns_route_t * p_route) { VERIFY_PARAM_NOT_NULL(p_lns); VERIFY_PARAM_NOT_NULL(p_route); if (p_lns->is_navigation_present == false) { return NRF_ERROR_NOT_SUPPORTED; } return ble_ln_db_record_add(p_route); } ret_code_t ble_lns_remove_route(ble_lns_t * p_lns, uint16_t route_id) { VERIFY_PARAM_NOT_NULL(p_lns); if (p_lns->is_navigation_present == false) { return NRF_ERROR_NOT_SUPPORTED; } return ble_ln_db_record_delete(route_id); }