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72 lines
2.7 KiB
C
72 lines
2.7 KiB
C
5 years ago
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/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#ifndef SRSUE_SFN_SYNC_H
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#define SRSUE_SFN_SYNC_H
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#include "srslte/interfaces/ue_interfaces.h"
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#include "srslte/radio/radio.h"
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#include "srslte/srslte.h"
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namespace srsue {
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// Class to synchronize system frame number
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class sfn_sync
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{
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public:
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typedef enum { IDLE, SFN_FOUND, SFX0_FOUND, SFN_NOFOUND, ERROR } ret_code;
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sfn_sync() = default;
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~sfn_sync();
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void init(srslte_ue_sync_t* ue_sync,
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const phy_args_t* phy_args_,
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srslte::rf_buffer_t& buffer,
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uint32_t buffer_max_samples_,
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srslte::log* log_h,
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uint32_t nof_subframes = SFN_SYNC_NOF_SUBFRAMES);
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void reset();
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bool set_cell(srslte_cell_t cell);
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ret_code run_subframe(srslte_cell_t* cell,
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uint32_t* tti_cnt,
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std::array<uint8_t, SRSLTE_BCH_PAYLOAD_LEN>& bch_payload,
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bool sfidx_only = false);
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ret_code decode_mib(srslte_cell_t* cell,
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uint32_t* tti_cnt,
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srslte::rf_buffer_t* ext_buffer,
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std::array<uint8_t, SRSLTE_BCH_PAYLOAD_LEN>& bch_payload,
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bool sfidx_only = false);
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private:
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const static int SFN_SYNC_NOF_SUBFRAMES = 100;
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const phy_args_t* phy_args = nullptr;
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uint32_t cnt = 0;
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uint32_t timeout = 0;
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srslte::log* log_h = nullptr;
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srslte_ue_sync_t* ue_sync = nullptr;
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srslte::rf_buffer_t mib_buffer = {};
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uint32_t buffer_max_samples = 0;
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srslte_ue_mib_t ue_mib = {};
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};
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}; // namespace srsue
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#endif // SRSUE_SFN_SYNC_H
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