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79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
8 years ago
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/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2015 Software Radio Systems Limited
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*
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* \section LICENSE
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*
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* This file is part of the srsUE library.
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*
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* srsUE 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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* srsUE 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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/******************************************************************************
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* File: tti_synch.h
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* Description: Interface used for PHY-MAC synchronization
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* (producer-consumer model). The consumer waits while its
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* counter is lower than the producer counter.
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* The PHY is the consumer. The MAC is the producer.
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* Reference:
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*****************************************************************************/
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#ifndef TTISYNC_H
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#define TTISYNC_H
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#include <stdint.h>
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namespace srslte {
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class tti_sync
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{
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public:
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tti_sync(uint32_t modulus_)
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{
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modulus = modulus_;
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increment = 1;
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init_counters(0);
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}
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virtual void increase() = 0;
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virtual void resync() = 0;
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virtual uint32_t wait() = 0;
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virtual void set_producer_cntr(uint32_t) = 0;
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uint32_t get_producer_cntr() { return producer_cntr; }
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uint32_t get_consumer_cntr() { return consumer_cntr; }
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void set_increment(uint32_t increment_) {
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increment = increment_;
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}
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protected:
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void increase_producer() { producer_cntr = (producer_cntr + increment)%modulus; }
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void increase_consumer() { consumer_cntr = (consumer_cntr + increment)%modulus; }
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bool wait_condition() { return producer_cntr == consumer_cntr; }
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void init_counters(uint32_t val)
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{
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consumer_cntr = val;
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producer_cntr = val;
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}
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uint32_t increment;
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uint32_t modulus;
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uint32_t producer_cntr;
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uint32_t consumer_cntr;
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};
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} // namespace srsue
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#endif // TTISYNC_H
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