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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_bas/ble_bas.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_bas/ble_bas.c | 384 |
1 files changed, 384 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_bas/ble_bas.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_bas/ble_bas.c new file mode 100644 index 0000000..4c7d174 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/ble_bas/ble_bas.c @@ -0,0 +1,384 @@ +/** + * 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_BAS) +#include "ble_bas.h" +#include <string.h> +#include "ble_srv_common.h" +#include "ble_conn_state.h" + +#define NRF_LOG_MODULE_NAME ble_bas +#if BLE_BAS_CONFIG_LOG_ENABLED +#define NRF_LOG_LEVEL BLE_BAS_CONFIG_LOG_LEVEL +#define NRF_LOG_INFO_COLOR BLE_BAS_CONFIG_INFO_COLOR +#define NRF_LOG_DEBUG_COLOR BLE_BAS_CONFIG_DEBUG_COLOR +#else // BLE_BAS_CONFIG_LOG_ENABLED +#define NRF_LOG_LEVEL 0 +#endif // BLE_BAS_CONFIG_LOG_ENABLED +#include "nrf_log.h" +NRF_LOG_MODULE_REGISTER(); + + +#define INVALID_BATTERY_LEVEL 255 + + +/**@brief Function for handling the Write event. + * + * @param[in] p_bas Battery Service structure. + * @param[in] p_ble_evt Event received from the BLE stack. + */ +static void on_write(ble_bas_t * p_bas, ble_evt_t const * p_ble_evt) +{ + if (!p_bas->is_notification_supported) + { + return; + } + + ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write; + + if ( (p_evt_write->handle == p_bas->battery_level_handles.cccd_handle) + && (p_evt_write->len == 2)) + { + if (p_bas->evt_handler == NULL) + { + return; + } + + ble_bas_evt_t evt; + + if (ble_srv_is_notification_enabled(p_evt_write->data)) + { + evt.evt_type = BLE_BAS_EVT_NOTIFICATION_ENABLED; + } + else + { + evt.evt_type = BLE_BAS_EVT_NOTIFICATION_DISABLED; + } + evt.conn_handle = p_ble_evt->evt.gatts_evt.conn_handle; + + // CCCD written, call application event handler. + p_bas->evt_handler(p_bas, &evt); + } +} + + +void ble_bas_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context) +{ + if ((p_context == NULL) || (p_ble_evt == NULL)) + { + return; + } + + ble_bas_t * p_bas = (ble_bas_t *)p_context; + + switch (p_ble_evt->header.evt_id) + { + case BLE_GATTS_EVT_WRITE: + on_write(p_bas, p_ble_evt); + break; + + default: + // No implementation needed. + break; + } +} + + +/**@brief Function for adding the Battery Level characteristic. + * + * @param[in] p_bas Battery Service structure. + * @param[in] p_bas_init Information needed to initialize the service. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static ret_code_t battery_level_char_add(ble_bas_t * p_bas, const ble_bas_init_t * p_bas_init) +{ + ret_code_t err_code; + ble_gatts_char_md_t char_md; + ble_gatts_attr_md_t cccd_md; + ble_gatts_attr_t attr_char_value; + ble_uuid_t ble_uuid; + ble_gatts_attr_md_t attr_md; + uint8_t initial_battery_level; + uint8_t encoded_report_ref[BLE_SRV_ENCODED_REPORT_REF_LEN]; + uint8_t init_len; + + // Add Battery Level characteristic + if (p_bas->is_notification_supported) + { + memset(&cccd_md, 0, sizeof(cccd_md)); + + // According to BAS_SPEC_V10, the read operation on cccd should be possible without + // authentication. + BLE_GAP_CONN_SEC_MODE_SET_OPEN(&cccd_md.read_perm); + cccd_md.write_perm = p_bas_init->battery_level_char_attr_md.cccd_write_perm; + cccd_md.vloc = BLE_GATTS_VLOC_STACK; + } + + memset(&char_md, 0, sizeof(char_md)); + + char_md.char_props.read = 1; + char_md.char_props.notify = (p_bas->is_notification_supported) ? 1 : 0; + 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 = (p_bas->is_notification_supported) ? &cccd_md : NULL; + char_md.p_sccd_md = NULL; + + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_BATTERY_LEVEL_CHAR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_bas_init->battery_level_char_attr_md.read_perm; + attr_md.write_perm = p_bas_init->battery_level_char_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; + + initial_battery_level = p_bas_init->initial_batt_level; + + memset(&attr_char_value, 0, sizeof(attr_char_value)); + + 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_battery_level; + + err_code = sd_ble_gatts_characteristic_add(p_bas->service_handle, &char_md, + &attr_char_value, + &p_bas->battery_level_handles); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + + if (p_bas_init->p_report_ref != NULL) + { + // Add Report Reference descriptor + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_REPORT_REF_DESCR); + + memset(&attr_md, 0, sizeof(attr_md)); + + attr_md.read_perm = p_bas_init->battery_level_report_read_perm; + BLE_GAP_CONN_SEC_MODE_SET_NO_ACCESS(&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; + + init_len = ble_srv_report_ref_encode(encoded_report_ref, p_bas_init->p_report_ref); + + memset(&attr_char_value, 0, sizeof(attr_char_value)); + + attr_char_value.p_uuid = &ble_uuid; + attr_char_value.p_attr_md = &attr_md; + attr_char_value.init_len = init_len; + attr_char_value.init_offs = 0; + attr_char_value.max_len = attr_char_value.init_len; + attr_char_value.p_value = encoded_report_ref; + + err_code = sd_ble_gatts_descriptor_add(p_bas->battery_level_handles.value_handle, + &attr_char_value, + &p_bas->report_ref_handle); + if (err_code != NRF_SUCCESS) + { + return err_code; + } + } + else + { + p_bas->report_ref_handle = BLE_GATT_HANDLE_INVALID; + } + + return NRF_SUCCESS; +} + + +ret_code_t ble_bas_init(ble_bas_t * p_bas, const ble_bas_init_t * p_bas_init) +{ + if (p_bas == NULL || p_bas_init == NULL) + { + return NRF_ERROR_NULL; + } + + ret_code_t err_code; + ble_uuid_t ble_uuid; + + // Initialize service structure + p_bas->evt_handler = p_bas_init->evt_handler; + p_bas->is_notification_supported = p_bas_init->support_notification; + p_bas->battery_level_last = INVALID_BATTERY_LEVEL; + + // Add service + BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_BATTERY_SERVICE); + + err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &p_bas->service_handle); + VERIFY_SUCCESS(err_code); + + // Add battery level characteristic + err_code = battery_level_char_add(p_bas, p_bas_init); + return err_code; +} + + +/**@brief Function for sending notifications with the Battery Level characteristic. + * + * @param[in] p_hvx_params Pointer to structure with notification data. + * @param[in] conn_handle Connection handle. + * + * @return NRF_SUCCESS on success, otherwise an error code. + */ +static ret_code_t battery_notification_send(ble_gatts_hvx_params_t * const p_hvx_params, + uint16_t conn_handle) +{ + ret_code_t err_code = sd_ble_gatts_hvx(conn_handle, p_hvx_params); + if (err_code == NRF_SUCCESS) + { + NRF_LOG_INFO("Battery notification has been sent using conn_handle: 0x%04X", conn_handle); + } + else + { + NRF_LOG_DEBUG("Error: 0x%08X while sending notification with conn_handle: 0x%04X", + err_code, + conn_handle); + } + return err_code; +} + + +ret_code_t ble_bas_battery_level_update(ble_bas_t * p_bas, + uint8_t battery_level, + uint16_t conn_handle) +{ + if (p_bas == NULL) + { + return NRF_ERROR_NULL; + } + + ret_code_t err_code = NRF_SUCCESS; + ble_gatts_value_t gatts_value; + + if (battery_level != p_bas->battery_level_last) + { + // Initialize value struct. + memset(&gatts_value, 0, sizeof(gatts_value)); + + gatts_value.len = sizeof(uint8_t); + gatts_value.offset = 0; + gatts_value.p_value = &battery_level; + + // Update database. + err_code = sd_ble_gatts_value_set(BLE_CONN_HANDLE_INVALID, + p_bas->battery_level_handles.value_handle, + &gatts_value); + if (err_code == NRF_SUCCESS) + { + NRF_LOG_INFO("Battery level has been updated: %d%%", battery_level) + + // Save new battery value. + p_bas->battery_level_last = battery_level; + } + else + { + NRF_LOG_DEBUG("Error during battery level update: 0x%08X", err_code) + + return err_code; + } + + // Send value if connected and notifying. + if (p_bas->is_notification_supported) + { + ble_gatts_hvx_params_t hvx_params; + + memset(&hvx_params, 0, sizeof(hvx_params)); + + hvx_params.handle = p_bas->battery_level_handles.value_handle; + hvx_params.type = BLE_GATT_HVX_NOTIFICATION; + hvx_params.offset = gatts_value.offset; + hvx_params.p_len = &gatts_value.len; + hvx_params.p_data = gatts_value.p_value; + + if (conn_handle == BLE_CONN_HANDLE_ALL) + { + ble_conn_state_conn_handle_list_t conn_handles = ble_conn_state_conn_handles(); + + // Try sending notifications to all valid connection handles. + for (uint32_t i = 0; i < conn_handles.len; i++) + { + if (ble_conn_state_status(conn_handles.conn_handles[i]) == BLE_CONN_STATUS_CONNECTED) + { + if (err_code == NRF_SUCCESS) + { + err_code = battery_notification_send(&hvx_params, + conn_handles.conn_handles[i]); + } + else + { + // Preserve the first non-zero error code + UNUSED_RETURN_VALUE(battery_notification_send(&hvx_params, + conn_handles.conn_handles[i])); + } + } + } + } + else + { + err_code = battery_notification_send(&hvx_params, conn_handle); + } + } + else + { + err_code = NRF_ERROR_INVALID_STATE; + } + } + + return err_code; +} + + +#endif // NRF_MODULE_ENABLED(BLE_BAS) |