201 lines
7.1 KiB
C
201 lines
7.1 KiB
C
/**
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* Copyright (c) 2012 - 2020, Nordic Semiconductor ASA
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form, except as embedded into a Nordic
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* Semiconductor ASA integrated circuit in a product or a software update for
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* such product, must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other
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* materials provided with the distribution.
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*
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* 3. Neither the name of Nordic Semiconductor ASA nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* 4. This software, with or without modification, must only be used with a
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* Nordic Semiconductor ASA integrated circuit.
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*
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* 5. Any software provided in binary form under this license must not be reverse
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* engineered, decompiled, modified and/or disassembled.
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*
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* THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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/* Attention!
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* To maintain compliance with Nordic Semiconductor ASA's Bluetooth profile
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* qualification listings, this section of source code must not be modified.
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*/
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#include "sdk_common.h"
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#if NRF_MODULE_ENABLED(BLE_IAS)
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#include "ble_ias.h"
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#include <string.h>
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#include "ble_srv_common.h"
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#define NRF_LOG_MODULE_NAME ble_ias
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#if BLE_IAS_CONFIG_LOG_ENABLED
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#define NRF_LOG_LEVEL BLE_IAS_CONFIG_LOG_LEVEL
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#define NRF_LOG_INFO_COLOR BLE_IAS_CONFIG_INFO_COLOR
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#define NRF_LOG_DEBUG_COLOR BLE_IAS_CONFIG_DEBUG_COLOR
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#else // BLE_IAS_CONFIG_LOG_ENABLED
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#define NRF_LOG_LEVEL 0
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#endif // BLE_IAS_CONFIG_LOG_ENABLED
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#include "nrf_log.h"
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NRF_LOG_MODULE_REGISTER();
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#define INITIAL_ALERT_LEVEL BLE_CHAR_ALERT_LEVEL_NO_ALERT
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/**@brief Function for handling the Connect event.
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*
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* @param[in] p_ias Immediate Alert Service structure.
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* @param[in] p_ble_evt Event received from the BLE stack.
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*/
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static void on_connect(ble_ias_t * p_ias, ble_evt_t const * p_ble_evt)
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{
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ret_code_t err_code;
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ble_ias_client_context_t * p_client = NULL;
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err_code = blcm_link_ctx_get(p_ias->p_link_ctx_storage,
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p_ble_evt->evt.gap_evt.conn_handle,
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(void *) &p_client);
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if (err_code != NRF_SUCCESS)
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{
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NRF_LOG_ERROR("Link context for 0x%02X connection handle could not be fetched.",
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p_ble_evt->evt.gap_evt.conn_handle);
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}
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else
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{
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p_client->alert_level = INITIAL_ALERT_LEVEL;
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}
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}
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/**@brief Function for handling the Write event.
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*
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* @param[in] p_ias Immediate Alert Service structure.
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* @param[in] p_ble_evt Event received from the BLE stack.
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*/
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static void on_write(ble_ias_t * p_ias, ble_evt_t const * p_ble_evt)
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{
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ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
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if ((p_evt_write->handle == p_ias->alert_level_handles.value_handle) && (p_evt_write->len == 1))
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{
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// Alert level written, call application event handler
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ret_code_t err_code;
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ble_ias_evt_t evt;
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ble_ias_client_context_t * p_client;
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err_code = blcm_link_ctx_get(p_ias->p_link_ctx_storage,
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p_ble_evt->evt.gatts_evt.conn_handle,
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(void *) &p_client);
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if (err_code != NRF_SUCCESS)
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{
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NRF_LOG_ERROR("Link context for 0x%02X connection handle could not be fetched.",
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p_ble_evt->evt.gatts_evt.conn_handle);
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}
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else
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{
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p_client->alert_level = p_evt_write->data[0];
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}
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evt.evt_type = BLE_IAS_EVT_ALERT_LEVEL_UPDATED;
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evt.conn_handle = p_ble_evt->evt.gatts_evt.conn_handle;
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evt.p_link_ctx = p_client;
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p_ias->evt_handler(p_ias, &evt);
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}
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}
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void ble_ias_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context)
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{
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ble_ias_t * p_ias = (ble_ias_t *)p_context;
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switch (p_ble_evt->header.evt_id)
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{
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case BLE_GAP_EVT_CONNECTED:
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on_connect(p_ias, p_ble_evt);
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break;
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case BLE_GATTS_EVT_WRITE:
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on_write(p_ias, p_ble_evt);
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break;
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default:
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// No implementation needed.
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break;
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}
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}
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uint32_t ble_ias_init(ble_ias_t * p_ias, const ble_ias_init_t * p_ias_init)
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{
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uint32_t err_code;
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uint8_t initial_alert_level;
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ble_uuid_t ble_uuid;
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ble_add_char_params_t add_char_params;
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// Initialize service structure
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if (p_ias_init->evt_handler == NULL)
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{
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return NRF_ERROR_INVALID_PARAM;
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}
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p_ias->evt_handler = p_ias_init->evt_handler;
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// Add service
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BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_IMMEDIATE_ALERT_SERVICE);
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err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
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&ble_uuid,
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&p_ias->service_handle);
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VERIFY_SUCCESS(err_code);
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// Add alert level characteristic
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initial_alert_level = INITIAL_ALERT_LEVEL;
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memset(&add_char_params, 0, sizeof(add_char_params));
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add_char_params.uuid = BLE_UUID_ALERT_LEVEL_CHAR;
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add_char_params.max_len = sizeof (uint8_t);
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add_char_params.init_len = sizeof (uint8_t);
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add_char_params.p_init_value = &initial_alert_level;
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add_char_params.char_props.write_wo_resp = 1;
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add_char_params.write_access = p_ias_init->alert_wr_sec;
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return characteristic_add(p_ias->service_handle,
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&add_char_params,
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&p_ias->alert_level_handles);
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}
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uint32_t ble_ias_alert_level_get(ble_ias_t * p_ias, uint16_t conn_handle, uint8_t * p_alert_level)
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{
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ret_code_t err_code;
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ble_ias_client_context_t * p_client;
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err_code = blcm_link_ctx_get(p_ias->p_link_ctx_storage, conn_handle, (void *) &p_client);
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VERIFY_SUCCESS(err_code);
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*p_alert_level = p_client->alert_level;
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return NRF_SUCCESS;
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}
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#endif // NRF_MODULE_ENABLED(BLE_IAS)
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