mirror of https://github.com/PentHertz/srsLTE.git
125 lines
3.2 KiB
C
125 lines
3.2 KiB
C
/*
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* Copyright 2013-2019 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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#include <complex.h>
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#include <unistd.h>
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#include "srslte/srslte.h"
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#define MAX_LEN 70176
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uint32_t nof_prb = 50;
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uint32_t config_idx = 3;
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uint32_t root_seq_idx = 0;
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uint32_t zero_corr_zone = 15;
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void usage(char* prog)
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{
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printf("Usage: %s\n", prog);
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printf("\t-n Uplink number of PRB [Default %d]\n", nof_prb);
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printf("\t-f Preamble format [Default 0]\n");
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printf("\t-r Root sequence index [Default 0]\n");
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printf("\t-z Zero correlation zone config [Default 1]\n");
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}
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void parse_args(int argc, char** argv)
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{
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int opt;
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while ((opt = getopt(argc, argv, "nfrz")) != -1) {
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switch (opt) {
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case 'n':
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nof_prb = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'f':
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config_idx = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'r':
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root_seq_idx = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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case 'z':
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zero_corr_zone = (uint32_t)strtol(argv[optind], NULL, 10);
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break;
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default:
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usage(argv[0]);
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exit(-1);
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}
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}
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}
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int main(int argc, char** argv)
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{
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parse_args(argc, argv);
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srslte_prach_t prach;
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bool high_speed_flag = false;
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cf_t preamble[MAX_LEN];
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memset(preamble, 0, sizeof(cf_t) * MAX_LEN);
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srslte_prach_cfg_t prach_cfg;
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ZERO_OBJECT(prach_cfg);
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prach_cfg.config_idx = config_idx;
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prach_cfg.hs_flag = high_speed_flag;
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prach_cfg.freq_offset = 0;
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prach_cfg.root_seq_idx = root_seq_idx;
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prach_cfg.zero_corr_zone = zero_corr_zone;
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if (srslte_prach_init(&prach, srslte_symbol_sz(nof_prb))) {
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return -1;
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}
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if (srslte_prach_set_cfg(&prach, &prach_cfg, nof_prb)) {
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ERROR("Error initiating PRACH object\n");
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return -1;
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}
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uint32_t seq_index = 0;
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uint32_t indices[64];
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uint32_t n_indices = 0;
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for (int i = 0; i < 64; i++)
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indices[i] = 0;
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for (seq_index = 0; seq_index < 64; seq_index++) {
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srslte_prach_gen(&prach, seq_index, 0, preamble);
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uint32_t prach_len = prach.N_seq;
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struct timeval t[3];
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gettimeofday(&t[1], NULL);
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srslte_prach_detect(&prach, 0, &preamble[prach.N_cp], prach_len, indices, &n_indices);
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gettimeofday(&t[2], NULL);
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get_time_interval(t);
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printf("texec=%ld us\n", t[0].tv_usec);
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if (n_indices != 1 || indices[0] != seq_index)
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return -1;
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}
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srslte_prach_free(&prach);
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printf("Done\n");
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exit(0);
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}
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