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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c new file mode 100644 index 0000000..8450ad6 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/experimental_gatts_c/nrf_ble_gatts_c.c @@ -0,0 +1,276 @@ +/** + * Copyright (c) 2017 - 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 "sdk_common.h" +#if NRF_MODULE_ENABLED(NRF_BLE_GATTS_C) + +#include "nrf_ble_gatts_c.h" +#include <string.h> +#include "ble.h" + +#define NRF_LOG_MODULE_NAME nrf_ble_gatts_c +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); + + +#define GATTS_LOG NRF_LOG_DEBUG /**< A debug logger macro that can be used in this file to perform logging over UART. */ +#define MODULE_INITIALIZED (p_gatts_c->initialized) /**< Macro indicating whether the module has been initialized properly. */ + +static const ble_uuid_t m_gatts_uuid = {BLE_UUID_GATT, BLE_UUID_TYPE_BLE}; /**< Service Changed indication UUID. */ + + +/**@brief Function for handling the indication and notifications from the GATT Service Server. + + @param[in] p_gatts_c Pointer to Service Changed client structure. + @param[in] p_ble_gattc_evt Pointer to a gattc event. +*/ +static void on_hvx(nrf_ble_gatts_c_t const * const p_gatts_c, + ble_gattc_evt_t const * const p_ble_gattc_evt) +{ + uint16_t srv_changed_handle = p_gatts_c->srv_changed_char.characteristic.handle_value; + + if ((p_ble_gattc_evt->params.hvx.handle == srv_changed_handle) + && (p_gatts_c->evt_handler != NULL)) + { + ret_code_t err_code = sd_ble_gattc_hv_confirm(p_ble_gattc_evt->conn_handle, + srv_changed_handle); + + if ((err_code != NRF_SUCCESS) && (p_gatts_c->err_handler != NULL)) + { + p_gatts_c->err_handler(err_code); + } + + nrf_ble_gatts_c_evt_t evt; + nrf_ble_gatts_c_evt_handler_t evt_handler = p_gatts_c->evt_handler; + + /*lint --e{415} --e{416} -save suppress Warning 415: Likely access of out-of-bounds pointer */ + evt.params.handle_range.start_handle = uint16_decode(p_ble_gattc_evt->params.hvx.data); + evt.params.handle_range.end_handle = uint16_decode(p_ble_gattc_evt->params.hvx.data + sizeof(uint16_t)); + /*lint -restore*/ + + evt.evt_type = NRF_BLE_GATTS_C_EVT_SRV_CHANGED; + evt.conn_handle = p_ble_gattc_evt->conn_handle; + + GATTS_LOG ("Service Changed Indication.\n\r"); + evt_handler(&evt); + + } +} + + +ret_code_t nrf_ble_gatts_c_init(nrf_ble_gatts_c_t * p_gatts_c, + nrf_ble_gatts_c_init_t * p_gatts_c_init) +{ + ret_code_t err_code = NRF_SUCCESS; + VERIFY_PARAM_NOT_NULL(p_gatts_c); + VERIFY_PARAM_NOT_NULL(p_gatts_c_init); + VERIFY_PARAM_NOT_NULL(p_gatts_c_init->evt_handler); + memset (p_gatts_c, 0, sizeof(nrf_ble_gatts_c_t)); + + p_gatts_c->conn_handle = BLE_CONN_HANDLE_INVALID; + p_gatts_c->evt_handler = p_gatts_c_init->evt_handler; + + err_code = ble_db_discovery_evt_register(&m_gatts_uuid); + VERIFY_SUCCESS(err_code); + + p_gatts_c->initialized = true; + return err_code; +} + + +/**@brief Function for checking whether the peer's GATT Service instance and the Service Changed + Characteristic have been discovered. + + @param[in] p_gatts_c Pointer to the GATT Service client structure instance. + + @return True if the Service Changed Characteristic handle is valid. + @return False if the Service Changed Characteristic handle is invalid. + */ +static bool gatts_gatt_handles_are_valid(nrf_ble_gatts_c_t const * const p_gatts_c) +{ + return (p_gatts_c->srv_changed_char.characteristic.handle_value != BLE_GATT_HANDLE_INVALID); +} + + +ret_code_t nrf_ble_gatts_c_enable_indication(nrf_ble_gatts_c_t * const p_gatts_c, + bool const enable) +{ + VERIFY_MODULE_INITIALIZED(); + + if ( (p_gatts_c->conn_handle == BLE_CONN_HANDLE_INVALID) + || !(gatts_gatt_handles_are_valid(p_gatts_c))) + { + return NRF_ERROR_INVALID_STATE; + } + + ret_code_t err_code = NRF_SUCCESS; + uint16_t cccd_val = (enable) ? BLE_GATT_HVX_INDICATION : 0; + + ble_gattc_write_params_t gattc_params = + { + .handle = p_gatts_c->srv_changed_char.cccd_handle, + .len = BLE_CCCD_VALUE_LEN, + .p_value = (uint8_t *)&cccd_val, + .offset = 0, + .write_op = BLE_GATT_OP_WRITE_REQ, + }; + + err_code = sd_ble_gattc_write(p_gatts_c->conn_handle, &gattc_params); + return err_code; +} + + +void nrf_ble_gatts_c_on_db_disc_evt(nrf_ble_gatts_c_t const * const p_gatts_c, + ble_db_discovery_evt_t * const p_evt) +{ + VERIFY_MODULE_INITIALIZED_VOID(); + + nrf_ble_gatts_c_evt_t evt; + ble_gatt_db_char_t * p_chars; + + p_chars = p_evt->params.discovered_db.charateristics; + evt.evt_type = NRF_BLE_GATTS_C_EVT_DISCOVERY_FAILED; + + if ( (p_evt->evt_type == BLE_DB_DISCOVERY_COMPLETE) + && (p_evt->params.discovered_db.srv_uuid.uuid == BLE_UUID_GATT) + && (p_evt->params.discovered_db.srv_uuid.type == BLE_UUID_TYPE_BLE)) + { + // Find the handles of the Service Changed Characteristics. + for (uint32_t i = 0; i < p_evt->params.discovered_db.char_count; i++) + { + if ( (p_chars[i].characteristic.uuid.uuid == BLE_UUID_GATT_CHARACTERISTIC_SERVICE_CHANGED) + && (p_chars[i].characteristic.char_props.indicate != 0)) + { + memcpy(&evt.params.srv_changed_char, + &p_chars[i], + sizeof(ble_gatt_db_char_t)); + + evt.evt_type = NRF_BLE_GATTS_C_EVT_DISCOVERY_COMPLETE; + GATTS_LOG("Service Changed Characteristic found.\n\r"); + break; + } + } + } + + if (p_gatts_c->evt_handler != NULL) + { + nrf_ble_gatts_c_evt_handler_t evt_handler = p_gatts_c->evt_handler; + evt.conn_handle = p_evt->conn_handle; + evt_handler(&evt); + } +} + + +/**@brief Function for handling the Disconnect event. + + @param[in] p_cts Pointer to the GATT Service client structure instance. + @param[in] p_ble_evt Event received from the BLE stack. + */ +static void on_disconnect(nrf_ble_gatts_c_t * p_gatts_c, ble_evt_t const * p_ble_evt) +{ + if (p_gatts_c->conn_handle == p_ble_evt->evt.gap_evt.conn_handle) + { + p_gatts_c->conn_handle = BLE_CONN_HANDLE_INVALID; + + if (gatts_gatt_handles_are_valid(p_gatts_c)) + { + // There was a valid instance of GATTS on the peer. Send an event to the + // application, so that it can do any clean up related to this module. + nrf_ble_gatts_c_evt_t evt; + + evt.evt_type = NRF_BLE_GATTS_C_EVT_DISCONN_COMPLETE; + + p_gatts_c->evt_handler(&evt); + p_gatts_c->srv_changed_char.characteristic.handle_value = BLE_GATT_HANDLE_INVALID; + p_gatts_c->srv_changed_char.cccd_handle = BLE_GATT_HANDLE_INVALID; + p_gatts_c->srv_changed_char.ext_prop_handle = BLE_GATT_HANDLE_INVALID; + p_gatts_c->srv_changed_char.report_ref_handle = BLE_GATT_HANDLE_INVALID; + p_gatts_c->srv_changed_char.user_desc_handle = BLE_GATT_HANDLE_INVALID; + } + } +} + + +void nrf_ble_gatts_c_on_ble_evt(ble_evt_t const * p_ble_evt, + void * p_context) +{ + nrf_ble_gatts_c_t * p_gatts_c; + p_gatts_c = p_context; + + VERIFY_MODULE_INITIALIZED_VOID(); + VERIFY_PARAM_NOT_NULL_VOID(p_gatts_c); + VERIFY_PARAM_NOT_NULL_VOID(p_ble_evt); + + switch (p_ble_evt->header.evt_id) + { + case BLE_GAP_EVT_DISCONNECTED: + on_disconnect(p_gatts_c, p_ble_evt); + break; + + case BLE_GATTC_EVT_HVX: + on_hvx(p_gatts_c, &(p_ble_evt->evt.gattc_evt)); + break; + + default: + break; + } +} + + +ret_code_t nrf_ble_gatts_c_handles_assign(nrf_ble_gatts_c_t * const p_gatts_c, + uint16_t const conn_handle, + ble_gatt_db_char_t const * const p_peer_handles) +{ + VERIFY_PARAM_NOT_NULL(p_gatts_c); + VERIFY_MODULE_INITIALIZED(); + + p_gatts_c->conn_handle = conn_handle; + if (p_peer_handles != NULL) + { + p_gatts_c->srv_changed_char.cccd_handle = p_peer_handles->cccd_handle; + p_gatts_c->srv_changed_char.ext_prop_handle = p_peer_handles->ext_prop_handle; + p_gatts_c->srv_changed_char.report_ref_handle = p_peer_handles->report_ref_handle; + p_gatts_c->srv_changed_char.user_desc_handle = p_peer_handles->user_desc_handle; + p_gatts_c->srv_changed_char.characteristic.handle_value = p_peer_handles->characteristic.handle_value; + + } + return NRF_SUCCESS; +} +#endif // NRF_MODULE_ENABLED(BLE_GATTS_C) |