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- /**
- * Copyright (c) 2016 - 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.
- *
- */
- #include "es_adv_timing_resolver.h"
- #include "sdk_macros.h"
- /**@brief Function for finding delay to use after each non-eTLM advertisement.
- *
- * @param[in] adv_interval Configured advertisement interval.
- * @param[in] num_slots_configured Number of configured slots.
- * @param[in] eTLM_required Is there an eTLM slot.
- */
- static uint16_t get_adv_delay(uint16_t adv_interval,
- uint8_t num_slots_configured,
- bool eTLM_required)
- {
- // If eTLM is required, don't count this when calculating delay.
- return adv_interval / (num_slots_configured - (eTLM_required ? 1 : 0));
- }
- /**@brief Function for checking if given slot_no is an EID slot.
- *
- * @param[in] slot_no Slot number to check.
- * @param[in] p_eid_slots_configured Pointer to list of configured EID slots.
- * @param[in] num_eid_slots_configured Number of EID slots configured.
- */
- static bool is_eid(uint8_t slot_no, const uint8_t * p_eid_slots_configured, uint8_t num_eid_slots_configured)
- {
- for (uint32_t i = 0; i < num_eid_slots_configured; ++i)
- {
- if (slot_no == p_eid_slots_configured[i])
- {
- return true;
- }
- }
- return false;
- }
- ret_code_t es_adv_timing_resolve(es_adv_timing_resolver_input_t * p_input)
- {
- VERIFY_PARAM_NOT_NULL(p_input);
- uint8_t result_index = 0;
- bool eTLM_required = p_input->tlm_configured && p_input->num_eid_slots_configured > 0;
- uint16_t base_delay;
- if (p_input->num_slots_configured == 0)
- {
- return NRF_ERROR_INVALID_PARAM;
- }
- base_delay = get_adv_delay(p_input->adv_interval, p_input->num_slots_configured, eTLM_required);
- for (uint32_t i = 0; i < p_input->num_slots_configured; ++i)
- {
- uint8_t slot_no = p_input->p_slots_configured[i];
- if (!(eTLM_required && slot_no == p_input->tlm_slot))
- {
- es_adv_timing_resolver_adv_timing_t * p_current_result = &p_input->p_result->timing_results[result_index];
- p_current_result->slot_no = slot_no;
- p_current_result->is_etlm = false;
- // If an eTLM is to be advertised for this frame, this value will be changed.
- p_current_result->delay_ms = base_delay;
- result_index++;
- if (eTLM_required &&
- is_eid(slot_no, p_input->p_eid_slots_configured, p_input->num_eid_slots_configured))
- {
- es_adv_timing_resolver_adv_timing_t * p_eTLM_timing_result =
- &p_input->p_result->timing_results[result_index];
- p_current_result->delay_ms = APP_CONFIG_ADV_FRAME_ETLM_SPACING_MS; // Update delay from EID to eTLM frame.
- p_eTLM_timing_result->slot_no = slot_no; // Point to EID slot-no, as this will be
- // used for finding the correct EIK.
- p_eTLM_timing_result->is_etlm = true; // Configure as eTLM frame.
- if (base_delay > APP_CONFIG_ADV_FRAME_ETLM_SPACING_MS)
- {
- p_eTLM_timing_result->delay_ms =
- base_delay -
- APP_CONFIG_ADV_FRAME_ETLM_SPACING_MS; // Set delay of eTLM frame.
- }
- else
- {
- p_eTLM_timing_result->delay_ms = APP_CONFIG_ADV_FRAME_SPACING_MS_MIN;
- }
- result_index++;
- }
- }
- }
- p_input->p_result->len_timing_results = result_index; // Note: index has been increased to equal length of result.
- if (p_input->p_result->len_timing_results > 0)
- {
- p_input->p_result->timing_results[p_input->p_result->len_timing_results - 1].delay_ms = 0; // Last Slot does not need delay.
- }
- return NRF_SUCCESS;
- }
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