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- /**
- * Copyright (c) 2012 - 2020, 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_GLS)
- #include "ble_gls.h"
- #include <string.h>
- #include "ble_gls_db.h"
- #include "ble_racp.h"
- #include "ble_srv_common.h"
- #define OPERAND_FILTER_TYPE_SEQ_NUM 0x01 /**< Filter data using Sequence Number criteria. */
- #define OPERAND_FILTER_TYPE_FACING_TIME 0x02 /**< Filter data using User Facing Time criteria. */
- #define OPERAND_FILTER_TYPE_RFU_START 0x07 /**< Start of filter types reserved For Future Use range */
- #define OPERAND_FILTER_TYPE_RFU_END 0xFF /**< End of filter types reserved For Future Use range */
- #define OPCODE_LENGTH 1 /**< Length of opcode inside Glucose Measurement packet. */
- #define HANDLE_LENGTH 2 /**< Length of handle inside Glucose Measurement packet. */
- #define MAX_GLM_LEN (BLE_GATT_ATT_MTU_DEFAULT - OPCODE_LENGTH - \
- HANDLE_LENGTH) /**< Maximum size of a transmitted Glucose Measurement. */
- #define RACP_OPERAND_LEN 2 /**< Record Access Control Point operand length. */
- #define GLS_NACK_PROC_ALREADY_IN_PROGRESS BLE_GATT_STATUS_ATTERR_APP_BEGIN + 0 /**< Reply when a requested procedure is already in progress. */
- #define GLS_NACK_CCCD_IMPROPERLY_CONFIGURED BLE_GATT_STATUS_ATTERR_APP_BEGIN + 1 /**< Reply when the a s CCCD is improperly configured. */
- static bool m_procesing_active; /**< Processing requested data. */
- static uint16_t m_next_seq_num; /**< Sequence number of the next database record. */
- static uint8_t m_racp_proc_operator; /**< Operator of current request. */
- static uint16_t m_racp_proc_seq_num; /**< Sequence number of current request. */
- static uint8_t m_racp_proc_record_ndx; /**< Current record index. */
- static uint8_t m_racp_proc_records_reported; /**< Number of reported records. */
- /**@brief Function for interception of GATT errors and @ref nrf_ble_gq errors.
- *
- * @param[in] nrf_error Error code.
- * @param[in] p_ctx Parameter from the event handler.
- * @param[in] conn_handle Connection handle.
- */
- static void gatt_error_handler(uint32_t nrf_error,
- void * p_ctx,
- uint16_t conn_handle)
- {
- ble_gls_t * p_gls = (ble_gls_t *)p_ctx;
- if ((p_gls->error_handler) != NULL && (nrf_error != NRF_ERROR_INVALID_STATE))
- {
- p_gls->error_handler(nrf_error);
- }
- }
- /**@brief Function for setting the next sequence number by reading the last record in the data base.
- *
- * @return NRF_SUCCESS on successful initialization of service, otherwise an error code.
- */
- static uint32_t next_sequence_number_set(void)
- {
- uint16_t num_records;
- ble_gls_rec_t rec;
- num_records = ble_gls_db_num_records_get();
- if (num_records > 0)
- {
- // Get last record
- uint32_t err_code = ble_gls_db_record_get(num_records - 1, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- m_next_seq_num = rec.meas.sequence_number + 1;
- }
- else
- {
- m_next_seq_num = 0;
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for encoding a Glucose measurement.
- *
- * @param[in] p_meas Measurement to be encoded.
- * @param[out] p_encoded_buffer Pointer to buffer where the encoded measurement is to be stored.
- *
- * @return Size of encoded measurement.
- */
- static uint8_t gls_meas_encode(const ble_gls_meas_t * p_meas, uint8_t * p_encoded_buffer)
- {
- uint8_t len = 0;
- p_encoded_buffer[len++] = p_meas->flags;
- len += uint16_encode(p_meas->sequence_number, &p_encoded_buffer[len]);
- len += ble_date_time_encode(&p_meas->base_time, &p_encoded_buffer[len]);
- if (p_meas->flags & BLE_GLS_MEAS_FLAG_TIME_OFFSET)
- {
- len += uint16_encode(p_meas->time_offset, &p_encoded_buffer[len]);
- }
- if (p_meas->flags & BLE_GLS_MEAS_FLAG_CONC_TYPE_LOC)
- {
- uint16_t encoded_concentration;
- encoded_concentration = ((p_meas->glucose_concentration.exponent << 12) & 0xF000) |
- ((p_meas->glucose_concentration.mantissa << 0) & 0x0FFF);
- p_encoded_buffer[len++] = (uint8_t)(encoded_concentration);
- p_encoded_buffer[len++] = (uint8_t)(encoded_concentration >> 8);
- p_encoded_buffer[len++] = (p_meas->sample_location << 4) | (p_meas->type & 0x0F);
- }
- if (p_meas->flags & BLE_GLS_MEAS_FLAG_SENSOR_STATUS)
- {
- len += uint16_encode(p_meas->sensor_status_annunciation, &p_encoded_buffer[len]);
- }
- return len;
- }
- uint32_t ble_gls_init(ble_gls_t * p_gls, const ble_gls_init_t * p_gls_init)
- {
- VERIFY_PARAM_NOT_NULL(p_gls);
- VERIFY_PARAM_NOT_NULL(p_gls_init);
- VERIFY_PARAM_NOT_NULL(p_gls_init->p_gatt_queue);
- uint32_t err_code;
- uint8_t num_recs;
- uint8_t init_value_encoded[MAX_GLM_LEN];
- ble_uuid_t ble_uuid;
- ble_add_char_params_t add_char_params;
- ble_gls_rec_t initial_gls_rec_value;
- // Initialize data base
- err_code = ble_gls_db_init();
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- err_code = next_sequence_number_set();
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- // Initialize service structure
- p_gls->evt_handler = p_gls_init->evt_handler;
- p_gls->error_handler = p_gls_init->error_handler;
- p_gls->feature = p_gls_init->feature;
- p_gls->is_context_supported = p_gls_init->is_context_supported;
- p_gls->conn_handle = BLE_CONN_HANDLE_INVALID;
- p_gls->p_gatt_queue = p_gls_init->p_gatt_queue;
- // Add service
- BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_GLUCOSE_SERVICE);
- err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY,
- &ble_uuid,
- &p_gls->service_handle);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- // Add glucose measurement characteristic
- memset(&add_char_params, 0, sizeof(add_char_params));
- memset(&initial_gls_rec_value, 0, sizeof(initial_gls_rec_value));
- num_recs = ble_gls_db_num_records_get();
- if (num_recs > 0)
- {
- err_code = ble_gls_db_record_get(num_recs - 1, &initial_gls_rec_value);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- }
- add_char_params.uuid = BLE_UUID_GLUCOSE_MEASUREMENT_CHAR;
- add_char_params.max_len = MAX_GLM_LEN;
- add_char_params.init_len = gls_meas_encode(&initial_gls_rec_value.meas,
- init_value_encoded);
- add_char_params.is_var_len = true;
- add_char_params.char_props.notify = 1;
- add_char_params.cccd_write_access = p_gls_init->gl_meas_cccd_wr_sec;
- add_char_params.p_init_value = init_value_encoded;
- err_code = characteristic_add(p_gls->service_handle, &add_char_params, &p_gls->glm_handles);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- // Add glucose measurement feature characteristic
- memset(&add_char_params, 0, sizeof(add_char_params));
- add_char_params.uuid = BLE_UUID_GLUCOSE_FEATURE_CHAR;
- add_char_params.max_len = sizeof(uint16_t);
- add_char_params.init_len = uint16_encode(p_gls->feature, init_value_encoded);
- add_char_params.p_init_value = init_value_encoded;
- add_char_params.char_props.read = 1;
- add_char_params.read_access = p_gls_init->gl_feature_rd_sec;
- err_code = characteristic_add(p_gls->service_handle, &add_char_params, &p_gls->glf_handles);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- // Add record control access point characteristic
- memset(&add_char_params, 0, sizeof(add_char_params));
- add_char_params.uuid = BLE_UUID_RECORD_ACCESS_CONTROL_POINT_CHAR;
- add_char_params.max_len = BLE_GATT_ATT_MTU_DEFAULT;
- add_char_params.is_var_len = true;
- add_char_params.char_props.indicate = 1;
- add_char_params.char_props.write = 1;
- add_char_params.cccd_write_access = p_gls_init->racp_cccd_wr_sec;
- add_char_params.write_access = p_gls_init->racp_wr_sec;
- add_char_params.is_defered_write = true;
- err_code = characteristic_add(p_gls->service_handle,
- &add_char_params,
- &p_gls->racp_handles);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for sending a response from the Record Access Control Point.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_racp_val RACP value to be sent.
- */
- static void racp_send(ble_gls_t * p_gls, ble_racp_value_t * p_racp_val)
- {
- uint32_t err_code;
- uint8_t encoded_resp[25];
- uint16_t len;
- // Send indication
- len = ble_racp_encode(p_racp_val, encoded_resp);
- nrf_ble_gq_req_t gls_req;
- memset(&gls_req, 0, sizeof(nrf_ble_gq_req_t));
- gls_req.type = NRF_BLE_GQ_REQ_GATTS_HVX;
- gls_req.error_handler.cb = gatt_error_handler;
- gls_req.error_handler.p_ctx = p_gls;
- gls_req.params.gatts_hvx.handle = p_gls->racp_handles.value_handle;
- gls_req.params.gatts_hvx.type = BLE_GATT_HVX_INDICATION;
- gls_req.params.gatts_hvx.offset = 0;
- gls_req.params.gatts_hvx.p_data = encoded_resp;
- gls_req.params.gatts_hvx.p_len = &len;
- err_code = nrf_ble_gq_item_add(p_gls->p_gatt_queue, &gls_req, p_gls->conn_handle);
- // Report error to application
- if ((p_gls->error_handler != NULL) &&
- (err_code != NRF_SUCCESS) &&
- (err_code != NRF_ERROR_INVALID_STATE))
- {
- p_gls->error_handler(err_code);
- }
- }
- /**@brief Function for sending a RACP response containing a Response Code Op Code and a Response Code Value.
- *
- * @param[in] p_gls Service instance.
- * @param[in] opcode RACP Op Code.
- * @param[in] value RACP Response Code Value.
- */
- static void racp_response_code_send(ble_gls_t * p_gls, uint8_t opcode, uint8_t value)
- {
- ble_racp_value_t racp_response;
- uint8_t pending_racp_response_operand[RACP_OPERAND_LEN] = {0};
- memset(&racp_response, 0, sizeof(racp_response));
- racp_response.opcode = RACP_OPCODE_RESPONSE_CODE;
- racp_response.operator = RACP_OPERATOR_NULL;
- racp_response.operand_len = 2;
- racp_response.p_operand = pending_racp_response_operand;
- pending_racp_response_operand[0] = opcode;
- pending_racp_response_operand[1] = value;
- racp_send(p_gls, &racp_response);
- }
- /**@brief Function for sending a glucose measurement/context.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_rec Measurement to be sent.
- *
- * @return NRF_SUCCESS on success, otherwise an error code.
- */
- static uint32_t glucose_meas_send(ble_gls_t * p_gls, ble_gls_rec_t * p_rec)
- {
- uint32_t err_code;
- uint8_t encoded_glm[MAX_GLM_LEN];
- uint16_t len;
- uint16_t hvx_len;
- ble_gatts_hvx_params_t hvx_params;
- len = gls_meas_encode(&p_rec->meas, encoded_glm);
- hvx_len = len;
- memset(&hvx_params, 0, sizeof(hvx_params));
- hvx_params.handle = p_gls->glm_handles.value_handle;
- hvx_params.type = BLE_GATT_HVX_NOTIFICATION;
- hvx_params.offset = 0;
- hvx_params.p_len = &hvx_len;
- hvx_params.p_data = encoded_glm;
- err_code = sd_ble_gatts_hvx(p_gls->conn_handle, &hvx_params);
- if (err_code == NRF_SUCCESS)
- {
- if (hvx_len != len)
- {
- err_code = NRF_ERROR_DATA_SIZE;
- }
- else
- {
- // Measurement successfully sent
- m_racp_proc_records_reported++;
- }
- }
- return err_code;
- }
- /**@brief Function for responding to the ALL operation.
- *
- * @param[in] p_gls Service instance.
- *
- * @return NRF_SUCCESS on success, otherwise an error code.
- */
- static uint32_t racp_report_records_all(ble_gls_t * p_gls)
- {
- uint16_t total_records = ble_gls_db_num_records_get();
- if (m_racp_proc_record_ndx >= total_records)
- {
- m_procesing_active = false;
- }
- else
- {
- uint32_t err_code;
- ble_gls_rec_t rec;
- err_code = ble_gls_db_record_get(m_racp_proc_record_ndx, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- err_code = glucose_meas_send(p_gls, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for responding to the FIRST or the LAST operation.
- *
- * @param[in] p_gls Service instance.
- *
- * @return NRF_SUCCESS on success, otherwise an error code.
- */
- static uint32_t racp_report_records_first_last(ble_gls_t * p_gls)
- {
- uint32_t err_code;
- ble_gls_rec_t rec;
- uint16_t total_records;
- total_records = ble_gls_db_num_records_get();
- if ((m_racp_proc_records_reported != 0) || (total_records == 0))
- {
- m_procesing_active = false;
- }
- else
- {
- if (m_racp_proc_operator == RACP_OPERATOR_FIRST)
- {
- err_code = ble_gls_db_record_get(0, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- }
- else if (m_racp_proc_operator == RACP_OPERATOR_LAST)
- {
- err_code = ble_gls_db_record_get(total_records - 1, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- }
- err_code = glucose_meas_send(p_gls, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for responding to the GREATER_OR_EQUAL operation.
- *
- * @param[in] p_gls Service instance.
- *
- * @return NRF_SUCCESS on success, otherwise an error code.
- */
- static uint32_t racp_report_records_greater_or_equal(ble_gls_t * p_gls)
- {
- uint16_t total_records = ble_gls_db_num_records_get();
- while (m_racp_proc_record_ndx < total_records)
- {
- uint32_t err_code;
- ble_gls_rec_t rec;
- err_code = ble_gls_db_record_get(m_racp_proc_record_ndx, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- if (rec.meas.sequence_number >= m_racp_proc_seq_num)
- {
- err_code = glucose_meas_send(p_gls, &rec);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- break;
- }
- m_racp_proc_record_ndx++;
- }
- if (m_racp_proc_record_ndx == total_records)
- {
- m_procesing_active = false;
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for informing that the REPORT RECORDS procedure is completed.
- *
- * @param[in] p_gls Service instance.
- */
- static void racp_report_records_completed(ble_gls_t * p_gls)
- {
- uint8_t resp_code_value;
- if (m_racp_proc_records_reported > 0)
- {
- resp_code_value = RACP_RESPONSE_SUCCESS;
- }
- else
- {
- resp_code_value = RACP_RESPONSE_NO_RECORDS_FOUND;
- }
- racp_response_code_send(p_gls, RACP_OPCODE_REPORT_RECS, resp_code_value);
- }
- /**@brief Function for the RACP report records procedure.
- *
- * @param[in] p_gls Service instance.
- */
- static void racp_report_records_procedure(ble_gls_t * p_gls)
- {
- uint32_t err_code;
- while (m_procesing_active)
- {
- // Execute requested procedure
- switch (m_racp_proc_operator)
- {
- case RACP_OPERATOR_ALL:
- err_code = racp_report_records_all(p_gls);
- break;
- case RACP_OPERATOR_FIRST:
- case RACP_OPERATOR_LAST:
- err_code = racp_report_records_first_last(p_gls);
- break;
- case RACP_OPERATOR_GREATER_OR_EQUAL:
- err_code = racp_report_records_greater_or_equal(p_gls);
- break;
- default:
- // Report error to application
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(NRF_ERROR_INTERNAL);
- }
- return;
- }
- // Error handling
- switch (err_code)
- {
- case NRF_SUCCESS:
- if (m_procesing_active)
- {
- m_racp_proc_record_ndx++;
- }
- else
- {
- racp_report_records_completed(p_gls);
- }
- break;
- case NRF_ERROR_RESOURCES:
- // Wait for TX_COMPLETE event to resume transmission
- return;
- case NRF_ERROR_INVALID_STATE:
- // Notification is probably not enabled. Ignore request.
- m_procesing_active = false;
- return;
- default:
- // Report error to application
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- }
- }
- /**@brief Function for testing if the received request is to be executed.
- *
- * @param[in] p_racp_request Request to be checked.
- * @param[out] p_response_code Response code to be sent in case the request is rejected.
- * RACP_RESPONSE_RESERVED is returned if the received message is
- * to be rejected without sending a response.
- *
- * @return TRUE if the request is to be executed, FALSE if it is to be rejected.
- * If it is to be rejected, p_response_code will contain the response code to be
- * returned to the central.
- */
- static bool is_request_to_be_executed(ble_racp_value_t const * p_racp_request,
- uint8_t * p_response_code)
- {
- *p_response_code = RACP_RESPONSE_RESERVED;
- if (p_racp_request->opcode == RACP_OPCODE_ABORT_OPERATION)
- {
- if (m_procesing_active)
- {
- if (p_racp_request->operator != RACP_OPERATOR_NULL)
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERATOR;
- }
- else if (p_racp_request->operand_len != 0)
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERAND;
- }
- else
- {
- *p_response_code = RACP_RESPONSE_SUCCESS;
- }
- }
- else
- {
- *p_response_code = RACP_RESPONSE_ABORT_FAILED;
- }
- }
- else if (m_procesing_active)
- {
- return false;
- }
- // Supported opcodes.
- else if ((p_racp_request->opcode == RACP_OPCODE_REPORT_RECS) ||
- (p_racp_request->opcode == RACP_OPCODE_REPORT_NUM_RECS))
- {
- switch (p_racp_request->operator)
- {
- // Operators WITHOUT a filter.
- case RACP_OPERATOR_ALL:
- case RACP_OPERATOR_FIRST:
- case RACP_OPERATOR_LAST:
- if (p_racp_request->operand_len != 0)
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERAND;
- }
- break;
- // Operators WITH a filter.
- case RACP_OPERATOR_GREATER_OR_EQUAL:
- if (p_racp_request->p_operand[0] == OPERAND_FILTER_TYPE_SEQ_NUM)
- {
- if (p_racp_request->operand_len != 3)
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERAND;
- }
- }
- else if (p_racp_request->p_operand[0] == OPERAND_FILTER_TYPE_FACING_TIME)
- {
- *p_response_code = RACP_RESPONSE_OPERAND_UNSUPPORTED;
- }
- else if (p_racp_request->p_operand[0] >= OPERAND_FILTER_TYPE_RFU_START)
- {
- *p_response_code = RACP_RESPONSE_OPERAND_UNSUPPORTED;
- }
- else
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERAND;
- }
- break;
- // Unsupported operators.
- case RACP_OPERATOR_LESS_OR_EQUAL:
- case RACP_OPERATOR_RANGE:
- *p_response_code = RACP_RESPONSE_OPERATOR_UNSUPPORTED;
- break;
- // Invalid operators.
- case RACP_OPERATOR_NULL:
- default:
- if (p_racp_request->operator >= RACP_OPERATOR_RFU_START)
- {
- *p_response_code = RACP_RESPONSE_OPERATOR_UNSUPPORTED;
- }
- else
- {
- *p_response_code = RACP_RESPONSE_INVALID_OPERATOR;
- }
- break;
- }
- }
- // Unsupported opcodes,
- else if (p_racp_request->opcode == RACP_OPCODE_DELETE_RECS)
- {
- *p_response_code = RACP_RESPONSE_OPCODE_UNSUPPORTED;
- }
- // Unknown opcodes.
- else
- {
- *p_response_code = RACP_RESPONSE_OPCODE_UNSUPPORTED;
- }
- // NOTE: The computation of the return value will change slightly when deferred write has been
- // implemented in the stack.
- return (*p_response_code == RACP_RESPONSE_RESERVED);
- }
- /**@brief Function for processing a REPORT RECORDS request.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_racp_request Request to be executed.
- */
- static void report_records_request_execute(ble_gls_t * p_gls, ble_racp_value_t * p_racp_request)
- {
- uint16_t seq_num = (p_racp_request->p_operand[2] << 8) | p_racp_request->p_operand[1];
- m_procesing_active = true;
- m_racp_proc_record_ndx = 0;
- m_racp_proc_operator = p_racp_request->operator;
- m_racp_proc_records_reported = 0;
- m_racp_proc_seq_num = seq_num;
- racp_report_records_procedure(p_gls);
- }
- /**@brief Function for processing a REPORT NUM RECORDS request.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_racp_request Request to be executed.
- */
- static void report_num_records_request_execute(ble_gls_t * p_gls, ble_racp_value_t * p_racp_request)
- {
- uint16_t total_records;
- uint16_t num_records;
- total_records = ble_gls_db_num_records_get();
- num_records = 0;
- if (p_racp_request->operator == RACP_OPERATOR_ALL)
- {
- num_records = total_records;
- }
- else if (p_racp_request->operator == RACP_OPERATOR_GREATER_OR_EQUAL)
- {
- uint16_t seq_num;
- uint16_t i;
- seq_num = (p_racp_request->p_operand[2] << 8) | p_racp_request->p_operand[1];
- for (i = 0; i < total_records; i++)
- {
- uint32_t err_code;
- ble_gls_rec_t rec;
- err_code = ble_gls_db_record_get(i, &rec);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- if (rec.meas.sequence_number >= seq_num)
- {
- num_records++;
- }
- }
- }
- else if ((p_racp_request->operator == RACP_OPERATOR_FIRST) ||
- (p_racp_request->operator == RACP_OPERATOR_LAST))
- {
- if (total_records > 0)
- {
- num_records = 1;
- }
- }
- ble_racp_value_t racp_response;
- uint8_t pending_racp_response_operand[RACP_OPERAND_LEN] = {0};
- memset(&racp_response, 0, sizeof(racp_response));
- racp_response.opcode = RACP_OPCODE_NUM_RECS_RESPONSE;
- racp_response.operator = RACP_OPERATOR_NULL;
- racp_response.operand_len = sizeof(uint16_t);
- racp_response.p_operand = pending_racp_response_operand;
- pending_racp_response_operand[0] = num_records & 0xFF;
- pending_racp_response_operand[1] = num_records >> 8;
- racp_send(p_gls, &racp_response);
- }
- /**@brief Function for checking if the CCCDs are configured.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_are_cccd_configured boolean indicating if both cccds are configured
- */
- uint32_t ble_gls_are_cccd_configured(ble_gls_t * p_gls, bool * p_are_cccd_configured)
- {
- uint32_t err_code;
- uint8_t cccd_value_buf[BLE_CCCD_VALUE_LEN];
- bool is_glm_notif_enabled = false;
- bool is_racp_indic_enabled = false;
- ble_gatts_value_t gatts_value;
- // Initialize value struct.
- memset(&gatts_value, 0, sizeof(gatts_value));
- gatts_value.len = BLE_CCCD_VALUE_LEN;
- gatts_value.offset = 0;
- gatts_value.p_value = cccd_value_buf;
- err_code = sd_ble_gatts_value_get(p_gls->conn_handle,
- p_gls->glm_handles.cccd_handle,
- &gatts_value);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- is_glm_notif_enabled = ble_srv_is_notification_enabled(cccd_value_buf);
- err_code = sd_ble_gatts_value_get(p_gls->conn_handle,
- p_gls->racp_handles.cccd_handle,
- &gatts_value);
- if (err_code != NRF_SUCCESS)
- {
- return err_code;
- }
- is_racp_indic_enabled = ble_srv_is_indication_enabled(cccd_value_buf);
- if (is_racp_indic_enabled & is_glm_notif_enabled)
- {
- *p_are_cccd_configured = true;
- }
- else
- {
- *p_are_cccd_configured = false;
- }
- return NRF_SUCCESS;
- }
- /**@brief Function for handling a write event to the Record Access Control Point.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_evt_write WRITE event to be handled.
- */
- static void on_racp_value_write(ble_gls_t * p_gls, ble_gatts_evt_write_t const * p_evt_write)
- {
- ble_racp_value_t racp_request;
- uint8_t response_code;
- ble_gatts_rw_authorize_reply_params_t auth_reply;
- bool are_cccd_configured;
- uint32_t err_code;
- auth_reply.type = BLE_GATTS_AUTHORIZE_TYPE_WRITE;
- auth_reply.params.write.offset = 0;
- auth_reply.params.write.len = 0;
- auth_reply.params.write.p_data = NULL;
- err_code = ble_gls_are_cccd_configured(p_gls, &are_cccd_configured);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- if (!are_cccd_configured)
- {
- auth_reply.params.write.gatt_status = GLS_NACK_CCCD_IMPROPERLY_CONFIGURED;
- err_code = sd_ble_gatts_rw_authorize_reply(p_gls->conn_handle,
- &auth_reply);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- }
- return;
- }
- // Decode request.
- ble_racp_decode(p_evt_write->len, (uint8_t *)p_evt_write->data, &racp_request);
- // Check if request is to be executed.
- if (is_request_to_be_executed(&racp_request, &response_code))
- {
- auth_reply.params.write.gatt_status = BLE_GATT_STATUS_SUCCESS;
- auth_reply.params.write.update = 1;
- err_code = sd_ble_gatts_rw_authorize_reply(p_gls->conn_handle,
- &auth_reply);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- // Execute request.
- if (racp_request.opcode == RACP_OPCODE_REPORT_RECS)
- {
- report_records_request_execute(p_gls, &racp_request);
- }
- else if (racp_request.opcode == RACP_OPCODE_REPORT_NUM_RECS)
- {
- report_num_records_request_execute(p_gls, &racp_request);
- }
- }
- else if (response_code != RACP_RESPONSE_RESERVED)
- {
- auth_reply.params.write.gatt_status = BLE_GATT_STATUS_SUCCESS;
- auth_reply.params.write.update = 1;
- err_code = sd_ble_gatts_rw_authorize_reply(p_gls->conn_handle,
- &auth_reply);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- // Abort any running procedure.
- m_procesing_active = false;
- // Respond with error code.
- racp_response_code_send(p_gls, racp_request.opcode, response_code);
- }
- else
- {
- auth_reply.params.write.gatt_status = GLS_NACK_PROC_ALREADY_IN_PROGRESS;
- err_code = sd_ble_gatts_rw_authorize_reply(p_gls->conn_handle,
- &auth_reply);
- if (err_code != NRF_SUCCESS)
- {
- if (p_gls->error_handler != NULL)
- {
- p_gls->error_handler(err_code);
- }
- return;
- }
- }
- }
- /**@brief Function for handling the Glucose measurement CCCD write event.
- *
- * @param[in] p_gls Service instance.
- * @param[in] p_evt_write WRITE event to be handled.
- */
- static void on_glm_cccd_write(ble_gls_t * p_gls, ble_gatts_evt_write_t const * p_evt_write)
- {
- if (p_evt_write->len == 2)
- {
- // CCCD written, update notification state
- ble_gls_evt_t evt;
- if (ble_srv_is_notification_enabled(p_evt_write->data))
- {
- evt.evt_type = BLE_GLS_EVT_NOTIFICATION_ENABLED;
- }
- else
- {
- evt.evt_type = BLE_GLS_EVT_NOTIFICATION_DISABLED;
- }
- if (p_gls->evt_handler != NULL)
- {
- p_gls->evt_handler(p_gls, &evt);
- }
- }
- }
- /**@brief Function for handling the WRITE event.
- *
- * @details Handles WRITE events from the BLE stack.
- *
- * @param[in] p_gls Glucose Service structure.
- * @param[in] p_ble_evt Event received from the BLE stack.
- */
- static void on_write(ble_gls_t * p_gls, ble_evt_t const * p_ble_evt)
- {
- ble_gatts_evt_write_t const * p_evt_write = &p_ble_evt->evt.gatts_evt.params.write;
- if (p_evt_write->handle == p_gls->glm_handles.cccd_handle)
- {
- on_glm_cccd_write(p_gls, p_evt_write);
- }
- else if (p_evt_write->handle == p_gls->racp_handles.value_handle)
- {
- on_racp_value_write(p_gls, p_evt_write);
- }
- }
- /**@brief Function for handling the TX_COMPLETE event.
- *
- * @details Handles TX_COMPLETE events from the BLE stack.
- *
- * @param[in] p_gls Glucose Service structure.
- * @param[in] p_ble_evt Event received from the BLE stack.
- */
- static void on_tx_complete(ble_gls_t * p_gls, ble_evt_t const * p_ble_evt)
- {
- if (m_procesing_active)
- {
- racp_report_records_procedure(p_gls);
- }
- }
- static void on_rw_authorize_request(ble_gls_t * p_gls, ble_gatts_evt_t const * p_gatts_evt)
- {
- ble_gatts_evt_rw_authorize_request_t const * p_auth_req =
- &p_gatts_evt->params.authorize_request;
- if (p_auth_req->type == BLE_GATTS_AUTHORIZE_TYPE_WRITE)
- {
- if ( (p_gatts_evt->params.authorize_request.request.write.op
- != BLE_GATTS_OP_PREP_WRITE_REQ)
- && (p_gatts_evt->params.authorize_request.request.write.op
- != BLE_GATTS_OP_EXEC_WRITE_REQ_NOW)
- && (p_gatts_evt->params.authorize_request.request.write.op
- != BLE_GATTS_OP_EXEC_WRITE_REQ_CANCEL)
- )
- {
- if (p_auth_req->request.write.handle == p_gls->racp_handles.value_handle)
- {
- on_racp_value_write(p_gls, &p_auth_req->request.write);
- }
- }
- }
- }
- void ble_gls_on_ble_evt(ble_evt_t const * p_ble_evt, void * p_context)
- {
- ble_gls_t * p_gls = (ble_gls_t *)p_context;
- ret_code_t err_code;
- switch (p_ble_evt->header.evt_id)
- {
- case BLE_GAP_EVT_CONNECTED:
- p_gls->conn_handle = p_ble_evt->evt.gap_evt.conn_handle;
- err_code = nrf_ble_gq_conn_handle_register(p_gls->p_gatt_queue,
- p_ble_evt->evt.gap_evt.conn_handle);
-
- if ((err_code != NRF_SUCCESS) && (p_gls->error_handler != NULL))
- {
- p_gls->error_handler(err_code);
- }
- break;
- case BLE_GAP_EVT_DISCONNECTED:
- p_gls->conn_handle = BLE_CONN_HANDLE_INVALID;
- break;
- case BLE_GATTS_EVT_WRITE:
- on_write(p_gls, p_ble_evt);
- break;
- case BLE_GATTS_EVT_HVN_TX_COMPLETE:
- on_tx_complete(p_gls, p_ble_evt);
- break;
- case BLE_GATTS_EVT_RW_AUTHORIZE_REQUEST:
- on_rw_authorize_request(p_gls, &p_ble_evt->evt.gatts_evt);
- break;
- default:
- // No implementation needed.
- break;
- }
- }
- uint32_t ble_gls_glucose_new_meas(ble_gls_t * p_gls, ble_gls_rec_t * p_rec)
- {
- p_rec->meas.sequence_number = m_next_seq_num++;
- return ble_gls_db_record_add(p_rec);
- }
- #endif // NRF_MODULE_ENABLED(BLE_GLS)
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