Implementation of NMT (Nordic Mobile Telephoe) network
This commit is contained in:
Andreas Eversberg
291
src/nmt/main.c
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291
src/nmt/main.c
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/* NMT main
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*
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* (C) 2016 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 <getopt.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sched.h>
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#include "../common/main.h"
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#include "../common/debug.h"
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#include "../common/timer.h"
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#include "../common/call.h"
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#include "../common/mncc_sock.h"
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#include "nmt.h"
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#include "frame.h"
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#include "dsp.h"
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#include "image.h"
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#include "tones.h"
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#include "announcement.h"
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/* settings */
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enum nmt_chan_type chan_type = CHAN_TYPE_CC_TC;
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int ms_power = 1; /* 1..3 */
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char traffic_area[3] = "";
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char area_no = 0;
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int compander = 1;
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int supervisory = 0;
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void print_help(const char *arg0)
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{
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print_help_common(arg0, "-y <traffic area> | list ");
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/* - - */
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printf(" -t --channel-type <channel type> | list\n");
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printf(" Give channel type, use 'list' to get a list. (default = '%s')\n", chan_type_short_name(chan_type));
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printf(" -P --ms-power <power level>\n");
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printf(" Give power level of the mobile station 1..3. (default = '%d')\n", ms_power);
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printf(" 3 = 15 W / 7 W (handheld), 2 = 1.5 W, 1 = 150 mW\n");
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printf(" -y --traffic-area <traffic area> | list\n");
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printf(" NOTE: MUST MATCH WITH YOUR ROAMING SETTINGS IN THE PHONE!\n");
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printf(" Your phone will not connect, if country code is different!\n");
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printf(" Give two digits of traffic area, the first digit defines the country\n");
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printf(" code, the second defines the cell area. (Example: 61 = Sweden, cell 1)\n");
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printf(" Alternatively you can give the short code for country and the cell\n");
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printf(" area seperated by comma. (Example: SE,1 = Sweden, cell 1)\n");
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printf(" Use 'list' to get a list of available short country code names\n");
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printf(" -a --area-number <area no> | 0\n");
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printf(" Give area number 1..4 or 0 for no area number. (default = '%d')\n", area_no);
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printf(" -C --compander 1 | 0\n");
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printf(" Make use of the compander to reduce noise during call. (default = '%d')\n", compander);
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printf(" -0 --supervisory 1..4 | 0\n");
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printf(" Use supervisory signal 1..4 to detect loss of signal from mobile\n");
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printf(" station, use 0 to disable. (default = '%d')\n", supervisory);
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printf("\nstation-id: Give 7 digits of station-id, you don't need to enter it\n");
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printf(" for every start of this program.\n");
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}
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static int handle_options(int argc, char **argv)
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{
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char country[32], *p;
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int skip_args = 0;
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static struct option long_options_special[] = {
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{"channel-type", 1, 0, 't'},
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{"ms-power", 1, 0, 'P'},
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{"area-number", 1, 0, 'a'},
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{"traffic-area", 1, 0, 'y'},
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{"compander", 1, 0, 'C'},
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{"supervisory", 1, 0, '0'},
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{0, 0, 0, 0}
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};
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set_options_common("t:P:a:y:C:0:", long_options_special);
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while (1) {
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int option_index = 0, c, rc;
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c = getopt_long(argc, argv, optstring, long_options, &option_index);
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if (c == -1)
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break;
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switch (c) {
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case 't':
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if (!strcmp(optarg, "list")) {
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nmt_channel_list();
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exit(0);
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}
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rc = nmt_channel_by_short_name(optarg);
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if (rc < 0) {
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fprintf(stderr, "Error, channel type '%s' unknown. Please use '-t list' to get a list. I suggest to use the default.\n", optarg);
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exit(0);
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}
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chan_type = rc;
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skip_args += 2;
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break;
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case 'P':
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ms_power = atoi(optarg);
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if (ms_power > 3)
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ms_power = 3;
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if (ms_power < 1)
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ms_power = 1;
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skip_args += 2;
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break;
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case 'a':
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area_no = optarg[0] - '0';
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if (area_no > 4) {
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fprintf(stderr, "Area number '%s' out of range, please use 1..4 or 0 for no area\n", optarg);
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exit(0);
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}
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skip_args += 2;
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break;
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case 'y':
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if (!strcmp(optarg, "list")) {
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nmt_country_list();
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exit(0);
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}
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/* digits */
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if (optarg[0] >= '0' && optarg[0] <= '9') {
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traffic_area[0] = optarg[0];
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if (optarg[1] < '0' || optarg[1] > '9') {
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error_ta:
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fprintf(stderr, "Illegal traffic area '%s', see '-h' for help\n", optarg);
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exit(0);
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}
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traffic_area[1] = optarg[1];
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if (optarg[2] != '\0')
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goto error_ta;
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traffic_area[2] = '\0';
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} else {
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strncpy(country, optarg, sizeof(country) - 1);
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country[sizeof(country) - 1] = '\0';
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p = strchr(country, ',');
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if (!p)
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goto error_ta;
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*p++ = '\0';
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rc = nmt_country_by_short_name(country);
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if (!rc)
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goto error_ta;
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if (*p < '0' || *p > '9')
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goto error_ta;
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traffic_area[0] = rc + '0';
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traffic_area[1] = *p;
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traffic_area[2] = '\0';
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}
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skip_args += 2;
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break;
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case 'C':
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compander = atoi(optarg);
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skip_args += 2;
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break;
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case '0':
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supervisory = atoi(optarg);
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if (supervisory < 0 || supervisory > 4) {
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fprintf(stderr, "Given supervisory signal is wrong, use '-h' for help!\n");
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exit(0);
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}
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skip_args += 2;
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break;
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default:
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opt_switch_common(c, argv[0], &skip_args);
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}
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}
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free(long_options);
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return skip_args;
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}
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int main(int argc, char *argv[])
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{
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int rc;
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int skip_args;
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const char *station_id = "";
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/* init common tones */
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init_nmt_tones();
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init_announcement();
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skip_args = handle_options(argc, argv);
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argc -= skip_args;
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argv += skip_args;
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if (argc > 1)
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station_id = argv[1];
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if (!kanal) {
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printf("No channel (\"Kanal\") is specified, I suggest channel 1.\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 (!traffic_area[0]) {
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printf("No traffic area is specified, I suggest to use 'SE' for Sweden and set the phone's roaming to 'SE' also.\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 (!loopback)
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print_image();
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/* init functions */
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if (use_mncc_sock) {
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rc = mncc_init("/tmp/bsc_mncc");
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if (rc < 0) {
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fprintf(stderr, "Failed to setup MNCC socket. Quitting!\n");
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return -1;
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}
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}
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init_frame();
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dsp_init();
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rc = call_init(station_id, call_sounddev, samplerate, latency, 7, loopback);
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if (rc < 0) {
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fprintf(stderr, "Failed to create call control instance. Quitting!\n");
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goto fail;
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}
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/* create transceiver instance */
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rc = nmt_create(sounddev, samplerate, kanal, (loopback) ? CHAN_TYPE_TEST : chan_type, ms_power, nmt_digits2value(traffic_area, 2), area_no, compander, supervisory, loopback);
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if (rc < 0) {
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fprintf(stderr, "Failed to create transceiver instance. Quitting!\n");
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goto fail;
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}
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if (kanal > 200) {
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printf("Base station ready, please tune transmitter to %.4f MHz and receiver "
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"to %.4f MHz.\n", nmt_channel2freq(kanal, 0),
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nmt_channel2freq(kanal, 1));
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} else {
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printf("Base station ready, please tune transmitter to %.3f MHz and receiver "
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"to %.3f MHz.\n", nmt_channel2freq(kanal, 0),
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nmt_channel2freq(kanal, 1));
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}
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signal(SIGINT,sighandler);
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signal(SIGHUP,sighandler);
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signal(SIGTERM,sighandler);
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signal(SIGPIPE,sighandler);
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if (rt_prio > 0) {
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struct sched_param schedp;
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int rc;
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memset(&schedp, 0, sizeof(schedp));
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schedp.sched_priority = rt_prio;
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rc = sched_setscheduler(0, SCHED_RR, &schedp);
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if (rc)
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fprintf(stderr, "Error setting SCHED_RR with prio %d\n", rt_prio);
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}
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main_loop(&quit, latency);
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if (rt_prio > 0) {
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struct sched_param schedp;
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memset(&schedp, 0, sizeof(schedp));
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schedp.sched_priority = 0;
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sched_setscheduler(0, SCHED_OTHER, &schedp);
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}
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fail:
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/* cleanup functions */
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call_cleanup();
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if (use_mncc_sock)
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mncc_exit();
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/* destroy transceiver instance */
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while (sender_head)
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nmt_destroy(sender_head);
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return 0;
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}
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