srsRAN_4G/srsue/src/phy/phy_nr_sa.cc

/**
 *
 * \section COPYRIGHT
 *
 * Copyright 2013-2021 Software Radio Systems Limited
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the distribution.
 *
 */
#include "srsue/hdr/phy/phy_nr_sa.h"

namespace srsue {

phy_nr_sa::phy_nr_sa(stack_interface_phy_sa_nr& stack_, srsran::radio_interface_phy& radio_) :
  logger(srslog::fetch_basic_logger("PHY-NR")), sync(stack_, radio_, workers), workers(4)
{}

bool phy_nr_sa::init(const args_t& args_)
{
  args = args_;

  nr::sync_sa::args_t sync_args = {};
  sync_args.srate_hz            = args.srate_hz;
  if (not sync.init(sync_args)) {
    logger.error("Error initialising SYNC");
    return false;
  }

  return true;
}

phy_interface_rrc_sa_nr::phy_nr_sa_state_t phy_nr_sa::get_state() const
{
  {
    switch (sync.get_state()) {
      case nr::sync_sa::STATE_IDLE:
        break;
      case nr::sync_sa::STATE_CELL_SEARCH:
        return phy_interface_rrc_sa_nr::PHY_NR_SA_STATE_CELL_SEARCH;
      case nr::sync_sa::STATE_CELL_SELECT:
        return phy_interface_rrc_sa_nr::PHY_NR_SA_STATE_CELL_SELECT;
    }
  }
  return phy_interface_rrc_sa_nr::PHY_NR_SA_STATE_IDLE;
}

void phy_nr_sa::reset()
{
  sync.go_idle();
}

bool phy_nr_sa::start_cell_search(const cell_search_args_t& req)
{
  // Prepare cell search configuration from the request
  nr::cell_search::cfg_t cfg = {};
  cfg.srate_hz               = args.srate_hz;
  cfg.center_freq_hz         = req.center_freq_hz;
  cfg.ssb_freq_hz            = req.ssb_freq_hz;
  cfg.ssb_scs                = req.ssb_scs;
  cfg.ssb_pattern            = req.ssb_pattern;
  cfg.duplex_mode            = req.duplex_mode;

  // Request cell search to lower synchronization instance
  return sync.start_cell_search(cfg);
}

} // namespace srsue