256 lines
7.5 KiB
C
256 lines
7.5 KiB
C
/* Eurosignal main
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*
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* (C) 2019 by Andreas Eversberg <jolly@eversberg.eu>
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* All Rights Reserved
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program 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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include "../libsample/sample.h"
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#include "../libdebug/debug.h"
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#include "../libmobile/call.h"
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#include "../libmobile/main_mobile.h"
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#include "../liboptions/options.h"
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#include "eurosignal.h"
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#include "dsp.h"
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#include "../anetz/besetztton.h"
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#include "es_mitte.h"
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#include "es_ges.h"
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#include "es_teilges.h"
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#include "es_kaudn.h"
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static int fm = 0; /* use fm */
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static int tx = 0; /* we transmit */
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static int rx = 0; /* we receive */
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static int repeat = 4; /* repeat given ID */
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static int degraded = 0; /* if station is degraded */
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static int random_id = 0; /* transmit pseudo random pattern */
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static uint32_t scan_from = 0;
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static uint32_t scan_to = 0;
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void print_help(const char *arg0)
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{
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main_mobile_print_help(arg0, "[--random] ");
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/* - - */
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printf(" -F --fm\n");
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printf(" Use frequency modulation instead of amplitude modulation. The carrier\n");
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printf(" frequency will be 7.5 KHz above/below the actual frequency. This\n");
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printf(" ensures that the change in frequency results as a change in amplitude\n");
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printf(" at the demodulator of the receiver.\n");
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printf(" -T --tx\n");
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printf(" Transmit Eurosignal on given channel, to page a receiver. (default)\n");
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printf(" -R --rx\n");
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printf(" Receive Eurosignal on given channel, so we are the receiver.\n");
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printf(" If none of the options -T nor -R is given, only transmitter is enabled.\n");
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printf(" -I --id <id> [-I ...]\n");
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printf(" Give one or more IDs to allow only the given IDs to be transmitted and\n");
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printf(" received. This option can be repeated many times. If this option is not\n");
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printf(" specified, any ID is allowed to transmit.\n");
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printf(" Also, any given ID will cause a beep when received. This requires call\n");
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printf(" device (sound card) to be defined or MNCC interface. (The caller ID will\n");
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printf(" be the received pager ID. The called number will be '1' for the first\n");
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printf(" ID given, '2' for scond, ...)\n");
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printf(" -D --degraded\n");
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printf(" Play the announcement that the system is degraded due to failure of one\n");
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printf(" or more transmitters. If the caller hangs up during or right after the\n");
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printf(" announcement, no paging is performed.\n");
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printf(" -S --scan <from> <to>\n");
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printf(" Scan through given IDs once (no repetition). This can be useful to find\n");
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printf(" the ID of a vintage receiver. Note that scanning all IDs from 000000\n");
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printf(" through 999999 would take almost 10 Days.\n");
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printf(" --random\n");
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printf(" Repeat some pseudo random IDs, to make the transmitted signal sound\n");
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printf(" authentic and as it would handle many calls. It will still be possible\n");
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printf(" to page a recevier.\n");
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printf(" --repeat <num>\n");
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printf(" Repead paging ID <num> times when transmitting. (default = %d)\n", repeat);
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printf("\nstation-id: Give 6 digit station-id, you don't need to enter it for every\n");
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printf(" start of this program.\n");
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main_mobile_print_hotkeys();
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}
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#define OPT_RANDOM 255
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#define OPT_REPEAT 258
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static void add_options(void)
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{
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main_mobile_add_options();
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option_add('F', "fm", 0);
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option_add('T', "tx", 0);
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option_add('R', "rx", 0);
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option_add('I', "id", 1);
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option_add('D', "degraded", 0);
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option_add('S', "scan", 2);
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option_add(OPT_RANDOM, "random", 0);
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option_add(OPT_REPEAT, "repeat", 1);
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}
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static int check_id(const char *id)
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{
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int i;
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if (strlen(id) != 6) {
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fprintf(stderr, "Given paging ID must have exactly 6 digits!\n");
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return -EINVAL;
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}
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for (i = 0; i < 6; i++) {
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if (id[i] < '0' || id[i] > '9') {
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fprintf(stderr, "Given paging ID must have digits (0..9) only!\n");
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return -EINVAL;
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}
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}
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return 0;
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}
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static int handle_options(int short_option, int argi, char **argv)
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{
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switch (short_option) {
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case 'F':
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fm = 1;
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break;
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case 'T':
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tx = 1;
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break;
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case 'R':
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rx = 1;
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break;
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case 'I':
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if (check_id(argv[argi]))
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return -EINVAL;
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euro_add_id(argv[argi]);
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break;
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case 'D':
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degraded = 1;
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break;
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case 'S':
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if (check_id(argv[argi]))
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return -EINVAL;
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scan_from = atoi(argv[argi++]);
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if (check_id(argv[argi]))
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return -EINVAL;
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scan_to = atoi(argv[argi++]) + 1;
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break;
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case OPT_RANDOM:
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random_id = 1;
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break;
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case OPT_REPEAT:
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repeat = atoi(argv[argi]);
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break;
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default:
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return main_mobile_handle_options(short_option, argi, argv);
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}
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return 1;
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}
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int main(int argc, char *argv[])
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{
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int rc, argi;
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const char *station_id = "";
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int i;
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/* init common tones */
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init_besetzton();
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/* init system specific tones */
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init_es_mitte();
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init_es_ges();
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init_es_teilges();
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init_es_kaudn();
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/* init mobile interface */
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console_digits = "0123456789ABCDE";
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main_mobile_init();
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/* handle options / config file */
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add_options();
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rc = options_config_file("~/.osmocom/analog/eurosignal.conf", handle_options);
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if (rc < 0)
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return 0;
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argi = options_command_line(argc, argv, handle_options);
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if (argi <= 0)
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return argi;
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if (argi < argc) {
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station_id = argv[argi];
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if (strlen(station_id) != 6) {
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printf("Given receiver ID '%s' does not have 6 digits\n", station_id);
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return 0;
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}
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}
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if (!num_kanal) {
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printf("No channel (\"Kanal\") is specified, Use '-k list' to get a list of all channels.\n\n");
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print_help(argv[0]);
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return 0;
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}
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if (!strcasecmp(kanal[0], "list")) {
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euro_list_channels();
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goto fail;
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}
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if (use_sdr) {
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/* set audiodev */
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for (i = 0; i < num_kanal; i++)
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audiodev[i] = "sdr";
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num_audiodev = num_kanal;
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}
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if (num_kanal == 1 && num_audiodev == 0)
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num_audiodev = 1; /* use default */
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if (num_kanal != num_audiodev) {
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fprintf(stderr, "You need to specify as many sound devices as you have channels.\n");
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exit(0);
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}
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/* inits */
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fm_init(fast_math);
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dsp_init(samplerate);
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euro_init();
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/* TX is default */
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if (!tx && !rx)
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tx = 1;
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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = euro_create(kanal[i], audiodev[i], use_sdr, samplerate, rx_gain, tx_gain, fm, tx, rx, repeat, degraded, random_id, scan_from, scan_to, write_rx_wave, write_tx_wave, read_rx_wave, read_tx_wave, loopback);
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if (rc < 0) {
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fprintf(stderr, "Failed to create \"Sender\" instance. Quitting!\n");
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goto fail;
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}
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printf("Base station for channel %s ready, please tune transmitter and/or receiver to %.4f MHz\n", kanal[i], euro_kanal2freq(kanal[i], fm) / 1e6);
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}
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main_mobile("eurosignal", &quit, latency, interval, NULL, station_id, 6);
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fail:
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/* destroy transceiver instance */
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while(sender_head)
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euro_destroy(sender_head);
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/* exits */
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fm_exit();
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euro_exit();
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return 0;
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}
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