mirror of https://github.com/PentHertz/srsLTE.git
151 lines
3.6 KiB
C
151 lines
3.6 KiB
C
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2014 The srsLTE Developers. See the
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* COPYRIGHT file at the top-level directory of this distribution.
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*
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* \section LICENSE
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*
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* This file is part of the srsLTE library.
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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 Lesser 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 Lesser General Public License for more details.
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*
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* A copy of the GNU Lesser 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 <stdio.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <strings.h>
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#include <unistd.h>
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#include <math.h>
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#include <time.h>
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#include <stdbool.h>
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#include "srslte/srslte.h"
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#include "srslte/cuhd/cuhd.h"
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#include "srslte/io/filesink.h"
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static bool keep_running = true;
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char *output_file_name;
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char *uhd_args="";
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float uhd_gain=40.0, uhd_freq=-1.0, uhd_rate=0.96;
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int nof_samples = -1;
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void int_handler(int dummy) {
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keep_running = false;
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}
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void usage(char *prog) {
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printf("Usage: %s [agrnv] -f rx_frequency_hz -o output_file\n", prog);
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printf("\t-a UHD args [Default %s]\n", uhd_args);
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printf("\t-g UHD Gain [Default %.2f dB]\n", uhd_gain);
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printf("\t-r UHD Rate [Default %.6f MHz]\n", uhd_rate);
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printf("\t-n nof_samples [Default %d]\n", nof_samples);
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printf("\t-v srslte_verbose\n");
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}
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void parse_args(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "agrnvfo")) != -1) {
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switch (opt) {
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case 'o':
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output_file_name = argv[optind];
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break;
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case 'a':
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uhd_args = argv[optind];
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break;
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case 'g':
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uhd_gain = atof(argv[optind]);
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break;
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case 'r':
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uhd_rate = atof(argv[optind]);
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break;
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case 'f':
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uhd_freq = atof(argv[optind]);
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break;
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case 'n':
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nof_samples = atoi(argv[optind]);
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break;
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case 'v':
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srslte_verbose++;
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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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if (uhd_freq < 0) {
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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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int main(int argc, char **argv) {
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cf_t *buffer;
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int sample_count, n;
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void *uhd;
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srslte_filesink_t sink;
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int32_t buflen;
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signal(SIGINT, int_handler);
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parse_args(argc, argv);
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buflen = 4800;
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sample_count = 0;
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buffer = malloc(sizeof(cf_t) * buflen);
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if (!buffer) {
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perror("malloc");
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exit(-1);
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}
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srslte_filesink_init(&sink, output_file_name, SRSLTE_COMPLEX_FLOAT_BIN);
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printf("Opening UHD device...\n");
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if (cuhd_open(uhd_args, &uhd)) {
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fprintf(stderr, "Error opening uhd\n");
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exit(-1);
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}
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printf("Set RX freq: %.6f MHz\n", cuhd_set_rx_freq(uhd, uhd_freq) / 1000000);
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printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_gain));
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printf("Set RX rate: %.6f MHz\n", cuhd_set_rx_srate(uhd, uhd_rate*1e6) / 1000000);
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cuhd_rx_wait_lo_locked(uhd);
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cuhd_start_rx_stream(uhd);
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while((sample_count < nof_samples || nof_samples == -1)
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&& keep_running){
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n = cuhd_recv(uhd, buffer, buflen, 1);
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if (n < 0) {
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fprintf(stderr, "Error receiving samples\n");
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exit(-1);
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}
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srslte_filesink_write(&sink, buffer, buflen);
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sample_count += buflen;
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}
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srslte_filesink_free(&sink);
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free(buffer);
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cuhd_close(uhd);
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printf("Ok - wrote %d samples\n", sample_count);
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exit(0);
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}
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