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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_adv_timing_resolver.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_adv_timing_resolver.c | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_adv_timing_resolver.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_adv_timing_resolver.c new file mode 100644 index 0000000..35c29c9 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_adv_timing_resolver.c @@ -0,0 +1,145 @@ +/** + * Copyright (c) 2016 - 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 "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; +} |