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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_slot_reg.h"
- #include "es_security.h"
- #define ES_SLOT_NOT_CONFIGURED 0xab /** Value set in configured lists to indicate not configured slot. */
- /**@brief Function updating 'tlm_configured' property of slot registry when slot is being cleared.
- *
- * @param[in] p_reg Pointer to slot registry.
- * @param[in] slot_no Slot number to be used.
- */
- static void update_tlm_configured_on_clearing(es_slot_reg_t * p_reg, uint8_t slot_no)
- {
- if (p_reg->tlm_configured && slot_no == p_reg->tlm_slot)
- {
- p_reg->tlm_configured = false;
- }
- }
- /**@brief Function updating 'num_configured_slots' and 'slots_configured' properties of slot registry when slot is being cleared.
- *
- * @param[in] p_configured Pointer to list of configured slots.
- * @param[in] p_num_configured_slots Pointer to number of configured slots.
- * @param[in] slot_no Slot number to clear.
- */
- static void configured_slots_on_clear_update(uint8_t * p_configured, uint8_t * p_num_configured_slots, uint8_t slot_no)
- {
- uint8_t index_of_last_configured_slot = *p_num_configured_slots - 1;
- for (uint32_t i = 0; i < APP_MAX_ADV_SLOTS; ++i)
- {
- if (p_configured[i] == slot_no)
- {
- // Copy all values 'to the right' of the cleared slot one step to the left.
- if (i < index_of_last_configured_slot)
- {
- for (uint32_t j = i; j < index_of_last_configured_slot; ++j)
- {
- p_configured[j] = p_configured[j + 1];
- }
- // Write ES_SLOT_NOT_CONFIGURED to all rightmost not configured indexes.
- memset(&p_configured[index_of_last_configured_slot],
- ES_SLOT_NOT_CONFIGURED,
- APP_MAX_ADV_SLOTS - index_of_last_configured_slot);
- }
- else
- {
- // There are no values 'to the right', simply overwrite with ES_SLOT_NOT_CONFIGURED
- p_configured[i] = ES_SLOT_NOT_CONFIGURED;
- }
- *p_num_configured_slots -= 1;
- return;
- }
- }
- }
- bool es_slot_reg_etlm_required(const es_slot_reg_t * p_reg)
- {
- return (p_reg->num_configured_eid_slots > 0 && p_reg->tlm_configured);
- }
- bool es_slot_reg_clear_slot(es_slot_reg_t * p_reg, uint8_t slot_no)
- {
- bool eid_has_been_cleared = false;
- if (p_reg->slots[slot_no].configured)
- {
- update_tlm_configured_on_clearing(p_reg, slot_no);
- configured_slots_on_clear_update(p_reg->slots_configured,
- &p_reg->num_configured_slots,
- slot_no);
- if (p_reg->slots[slot_no].adv_frame.type == ES_FRAME_TYPE_EID)
- {
- configured_slots_on_clear_update(p_reg->eid_slots_configured,
- &p_reg->num_configured_eid_slots,
- slot_no);
- eid_has_been_cleared = true;
- }
- p_reg->slots[slot_no].configured = false;
- }
- memset(&p_reg->slots[slot_no], 0, sizeof(p_reg->slots[slot_no]));
- if (eid_has_been_cleared)
- {
- es_security_eid_slot_destroy(slot_no);
- }
- return eid_has_been_cleared;
- }
- void es_slot_reg_update_slot_list_info_on_add(es_slot_reg_t * p_reg,
- uint8_t slot_no,
- es_frame_type_t frame_type,
- bool init)
- {
- if (frame_type == ES_FRAME_TYPE_TLM)
- {
- p_reg->tlm_configured = true;
- p_reg->tlm_slot = slot_no;
- }
- if (!p_reg->slots[slot_no].configured || init)
- {
- p_reg->slots[slot_no].configured = true;
- // Note, we use 'num_configured_slots' before incrementing it, so it is pointing to the correct index.
- p_reg->slots_configured[p_reg->num_configured_slots] = slot_no;
- p_reg->num_configured_slots++;
- if (frame_type == ES_FRAME_TYPE_EID)
- {
- p_reg->eid_slots_configured[p_reg->num_configured_eid_slots] = slot_no;
- p_reg->num_configured_eid_slots++;
- }
- }
- // If an already configured slot has changed from anything TO an EID slot.
- else if (frame_type == ES_FRAME_TYPE_EID &&
- p_reg->slots[slot_no].adv_frame.type != ES_FRAME_TYPE_EID)
- {
- p_reg->eid_slots_configured[p_reg->num_configured_eid_slots] = slot_no;
- p_reg->num_configured_eid_slots++;
- }
- }
- void es_slot_reg_init(es_slot_reg_t * p_reg)
- {
- p_reg->tlm_configured = false;
- memset(p_reg->slots_configured, ES_SLOT_NOT_CONFIGURED, APP_MAX_ADV_SLOTS);
- memset(p_reg->eid_slots_configured, ES_SLOT_NOT_CONFIGURED, APP_MAX_EID_SLOTS);
- p_reg->num_configured_eid_slots = 0;
- p_reg->num_configured_slots = 0;
- }
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