diff options
Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_slot_reg.c')
| -rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_slot_reg.c | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_slot_reg.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_slot_reg.c new file mode 100644 index 0000000..f789e6b --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/components/ble/ble_services/eddystone/es_slot_reg.c @@ -0,0 +1,181 @@ +/** + * 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_slot_reg.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])); + + 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; +} |