Add JollyCom, a simple and experimantal mobile network
This network that can be used with any radio and a DTMF transmitter.
This commit is contained in:
Andreas Eversberg
219
src/jolly/main.c
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219
src/jolly/main.c
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/* main
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*
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* (C) 2017 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 <fcntl.h>
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#include <unistd.h>
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#include <math.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include "../libsample/sample.h"
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#include "../libmobile/main_mobile.h"
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#include "../libdebug/debug.h"
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#include "../libtimer/timer.h"
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#include "../libmncc/mncc_sock.h"
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#include "../anetz/freiton.h"
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#include "../anetz/besetztton.h"
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#include "jolly.h"
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#include "dsp.h"
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#include "voice.h"
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/* settings */
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int num_freq = 0;
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double dl_freq = 438.600;
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double ul_freq = 431.000;
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double step = 25.0;
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static double squelch_db = -INFINITY;
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int nbfm = 0;
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int repeater = 0;
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void print_help(const char *arg0)
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{
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main_mobile_print_help(arg0, "[-F <downlink MHz>,<uplink MHz>] ");
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/* - - */
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printf(" -F --frequency <downlink MHz>,<uplink MHz>,<step KHz>\n");
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printf(" Downlink and uplink frequency to use for channel 0.\n");
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printf(" Give step for channel spacing. (default = %.3f,%.3f,%.4f)\n", dl_freq, ul_freq, step);
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printf(" -S --squelch <dB> | auto\n");
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printf(" Use given RF level to detect loss of signal. When the signal gets lost\n");
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printf(" and stays below this level, the connection is released.\n");
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printf(" Use 'auto' to do automatic noise floor calibration to detect loss.\n");
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printf(" Only works with SDR! (disabled by default)\n");
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printf(" -N --nbfm\n");
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printf(" Use Narrow band FM with deviation of 2.5 KHz instead of 5.0 KHz.\n");
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printf(" -R --relay\n");
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printf(" Use transceiver as repeater, so multiple radios can communicate with\n");
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printf(" each other. It is still possible to make and receive calls. Multiple\n");
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printf(" radios can talk then to the calling/called party.\n");
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printf("\nstation-id: Give 4 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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main_mobile_print_hotkeys();
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}
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static int handle_options(int argc, char **argv)
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{
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int skip_args = 0;
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static struct option long_options_special[] = {
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{"frequency", 1, 0, 'F'},
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{"squelch", 1, 0, 'S'},
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{"nbfm", 0, 0, 'N'},
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{"repeater", 0, 0, 'R'},
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{0, 0, 0, 0}
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};
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main_mobile_set_options("F:S:NR", long_options_special);
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while (1) {
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int option_index = 0, c;
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char *string, *string_dl, *string_ul, *string_step;
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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 'F':
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string = strdup(optarg);
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string_dl = strsep(&string, ",");
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string_ul = strsep(&string, ",");
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string_step = strsep(&string, ",");
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if (!string_dl || !string_ul || !string_step) {
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fprintf(stderr, "Please give 3 values for --frequency, seperated by comma and no space!\n");
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exit(0);
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}
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dl_freq = atof(string_dl);
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ul_freq = atof(string_ul);
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step = atof(string_step);
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skip_args += 2;
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break;
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case 'S':
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if (!strcasecmp(optarg, "auto"))
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squelch_db = 0.0;
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else
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squelch_db = atof(optarg);
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skip_args += 2;
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break;
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case 'N':
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nbfm = 1;
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skip_args += 1;
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break;
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case 'R':
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repeater = 1;
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skip_args += 1;
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break;
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default:
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main_mobile_opt_switch(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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int mandatory = 0;
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int i;
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/* init tones */
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init_freiton();
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init_besetzton();
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// init_ansage();
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main_mobile_init();
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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 (strlen(station_id) != 4) {
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printf("Given station ID '%s' does not have 4 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, Please use channel 0.\n\n");
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mandatory = 1;
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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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if (mandatory) {
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print_help(argv[-skip_args]);
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return 0;
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}
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/* SDR always requires emphasis */
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if (use_sdr) {
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do_pre_emphasis = 1;
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do_de_emphasis = 1;
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}
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/* no SDR, no squelch */
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if (!use_sdr && !isinf(squelch_db)) {
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fprintf(stderr, "Cannot use squelch without SDR! Analog receivers don't give use RSSI.\n");
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goto fail;
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}
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init_voice(samplerate);
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dsp_init();
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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = jolly_create(kanal[i], dl_freq, ul_freq, step, audiodev[i], use_sdr, samplerate, rx_gain, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, read_tx_wave, loopback, squelch_db, nbfm, repeater);
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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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printf("base station on channel %d ready, please tune transmitter to %.4f MHz and receiver to %.4f MHz. (%.4f MHz offset)\n", kanal[i], dl_freq + step / 1e3 * (double)kanal[i], ul_freq + step / 1e3 * (double)kanal[i], ul_freq - dl_freq);
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}
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main_mobile(&quit, latency, interval, NULL, station_id, 4);
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fail:
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/* destroy transceiver instance */
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while (sender_head)
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jolly_destroy(sender_head);
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return 0;
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}
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