mirror of https://github.com/PentHertz/srsLTE.git
101 lines
3.8 KiB
C++
101 lines
3.8 KiB
C++
/**
|
|
* Copyright 2013-2022 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsRAN.
|
|
*
|
|
* srsRAN is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsRAN is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
#include "npdsch_ue_helper.h"
|
|
#include "srsran/asn1/rrc_nbiot.h"
|
|
#include "srsran/phy/utils/vector.h" // for SRSRAN_MIN
|
|
|
|
int get_sib2_params(const uint8_t* sib1_payload, const uint32_t len, srsran_nbiot_si_params_t* sib2_params)
|
|
{
|
|
memset(sib2_params, 0, sizeof(srsran_nbiot_si_params_t));
|
|
|
|
// unpack SIB
|
|
asn1::rrc::bcch_dl_sch_msg_nb_s dlsch_msg;
|
|
asn1::cbit_ref dlsch_bref(sib1_payload, len);
|
|
asn1::SRSASN_CODE err = dlsch_msg.unpack(dlsch_bref);
|
|
if (err != asn1::SRSASN_SUCCESS) {
|
|
fprintf(stderr, "Error unpacking DL-SCH message\n");
|
|
return SRSRAN_ERROR;
|
|
}
|
|
|
|
// set SIB2-NB parameters
|
|
sib2_params->n = 1;
|
|
auto sched_info = dlsch_msg.msg.c1().sib_type1_r13().sched_info_list_r13.begin();
|
|
sib2_params->si_periodicity = sched_info->si_periodicity_r13.to_number();
|
|
if (dlsch_msg.msg.c1().sib_type1_r13().si_radio_frame_offset_r13_present) {
|
|
sib2_params->si_radio_frame_offset = dlsch_msg.msg.c1().sib_type1_r13().si_radio_frame_offset_r13;
|
|
}
|
|
sib2_params->si_repetition_pattern = sched_info->si_repeat_pattern_r13.to_number();
|
|
sib2_params->si_tb = sched_info->si_tb_r13.to_number();
|
|
sib2_params->si_window_length = dlsch_msg.msg.c1().sib_type1_r13().si_win_len_r13.to_number();
|
|
|
|
return SRSRAN_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Unpacks BCCH BCH message and writes JSON formatted message to output
|
|
*/
|
|
int bcch_bch_to_pretty_string(const uint8_t* bcch_bch_payload,
|
|
const uint32_t input_len,
|
|
char* output,
|
|
const uint32_t max_output_len)
|
|
{
|
|
asn1::rrc::bcch_bch_msg_nb_s bch_msg;
|
|
asn1::cbit_ref bch_bref(bcch_bch_payload, input_len);
|
|
asn1::SRSASN_CODE err = bch_msg.unpack(bch_bref);
|
|
if (err != asn1::SRSASN_SUCCESS) {
|
|
fprintf(stderr, "Error unpacking BCCH message\n");
|
|
return SRSRAN_ERROR;
|
|
}
|
|
|
|
asn1::json_writer json_writer;
|
|
bch_msg.to_json(json_writer);
|
|
|
|
uint32_t output_len = SRSRAN_MIN(max_output_len, json_writer.to_string().length());
|
|
memcpy(output, json_writer.to_string().c_str(), output_len);
|
|
|
|
return SRSRAN_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Unpacks BCCH DL-SCH message and writes JSON formatted message to output
|
|
*/
|
|
int bcch_dl_sch_to_pretty_string(const uint8_t* bcch_dl_sch_payload,
|
|
const uint32_t input_len,
|
|
char* output,
|
|
const uint32_t max_output_len)
|
|
{
|
|
asn1::rrc::bcch_dl_sch_msg_nb_s dlsch_msg;
|
|
asn1::cbit_ref dlsch_bref(bcch_dl_sch_payload, input_len);
|
|
asn1::SRSASN_CODE err = dlsch_msg.unpack(dlsch_bref);
|
|
if (err != asn1::SRSASN_SUCCESS) {
|
|
fprintf(stderr, "Error unpacking DL-SCH message\n");
|
|
return SRSRAN_ERROR;
|
|
}
|
|
|
|
asn1::json_writer json_writer;
|
|
dlsch_msg.to_json(json_writer);
|
|
|
|
uint32_t output_len = SRSRAN_MIN(max_output_len, json_writer.to_string().length());
|
|
memcpy(output, json_writer.to_string().c_str(), output_len);
|
|
|
|
return SRSRAN_SUCCESS;
|
|
} |