An implementation of Analog cellular networks like A-Netz, B-Netz, C-Netz, NMT, AMPS, TACS, JTACS, Radiocom 2000, IMTS, MPT1327, Eurosignal and more http://osmocom-analog.eversberg.eu/
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osmocom-analog/src/jolly/main.c

214 lines
6.1 KiB

/* JollyCom main
*
* (C) 2017 by Andreas Eversberg <jolly@eversberg.eu>
* All Rights Reserved
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "../libsample/sample.h"
#include "../libmobile/main_mobile.h"
#include "../libdebug/debug.h"
#include "../libtimer/timer.h"
#include "../libmncc/mncc_sock.h"
#include "../anetz/freiton.h"
#include "../anetz/besetztton.h"
#include "../liboptions/options.h"
#include "jolly.h"
#include "dsp.h"
#include "voice.h"
/* settings */
int num_freq = 0;
double dl_freq = 438.600;
double ul_freq = 431.000;
double step = 25.0;
static double squelch_db = -INFINITY;
int nbfm = 0;
int repeater = 0;
void print_image(void) {}
void print_help(const char *arg0)
{
main_mobile_print_help(arg0, "[-F <downlink MHz>,<uplink MHz>] ");
/* - - */
printf(" -F --frequency <downlink MHz>,<uplink MHz>,<step KHz>\n");
printf(" Downlink and uplink frequency to use for channel 0.\n");
printf(" Give step for channel spacing. (default = %.3f,%.3f,%.4f)\n", dl_freq, ul_freq, step);
printf(" -S --squelch <dB> | auto\n");
printf(" Use given RF level to detect loss of signal. When the signal gets lost\n");
printf(" and stays below this level, the connection is released.\n");
printf(" Use 'auto' to do automatic noise floor calibration to detect loss.\n");
printf(" Only works with SDR! (disabled by default)\n");
printf(" -N --nbfm\n");
printf(" Use Narrow band FM with deviation of 2.5 KHz instead of 5.0 KHz.\n");
printf(" -R --relay\n");
printf(" Use transceiver as repeater, so multiple radios can communicate with\n");
printf(" each other. It is still possible to make and receive calls. Multiple\n");
printf(" radios can talk then to the calling/called party.\n");
printf("\nstation-id: Give 4 digits of station-id, you don't need to enter it\n");
printf(" for every start of this program.\n");
main_mobile_print_hotkeys();
}
static void add_options(void)
{
main_mobile_add_options();
option_add('F', "frequency", 1);
option_add('S', "squelch", 1);
option_add('N', "nbfm", 0);
option_add('R', "repeater", 0);
}
static int handle_options(int short_option, int argi, char **argv)
{
char *string, *string_dl, *string_ul, *string_step;
switch (short_option) {
case 'F':
string = strdup(argv[argi]);
string_dl = strsep(&string, ",");
string_ul = strsep(&string, ",");
string_step = strsep(&string, ",");
if (!string_dl || !string_ul || !string_step) {
fprintf(stderr, "Please give 3 values for --frequency, separated by comma and no space!\n");
exit(0);
}
dl_freq = atof(string_dl);
ul_freq = atof(string_ul);
step = atof(string_step);
break;
case 'S':
if (!strcasecmp(argv[argi], "auto"))
squelch_db = 0.0;
else
squelch_db = atof(argv[argi]);
break;
case 'N':
nbfm = 1;
break;
case 'R':
repeater = 1;
break;
default:
return main_mobile_handle_options(short_option, argi, argv);
}
return 1;
}
int main(int argc, char *argv[])
{
int rc, argi;
const char *station_id = "";
int mandatory = 0;
int i;
/* init tones */
init_freiton();
init_besetzton();
// init_ansage();
main_mobile_init();
/* handle options / config file */
add_options();
rc = options_config_file("~/.osmocom/analog/jollycom.conf", handle_options);
if (rc < 0)
return 0;
argi = options_command_line(argc, argv, handle_options);
if (argi <= 0)
return argi;
if (argi < argc) {
station_id = argv[argi];
if (strlen(station_id) != 4) {
printf("Given station ID '%s' does not have 4 digits\n", station_id);
return 0;
}
}
if (!num_kanal) {
printf("No channel (\"Kanal\") is specified, Please use channel 0.\n\n");
mandatory = 1;
}
if (use_sdr) {
/* set audiodev */
for (i = 0; i < num_kanal; i++)
audiodev[i] = "sdr";
num_audiodev = num_kanal;
}
if (num_kanal == 1 && num_audiodev == 0)
num_audiodev = 1; /* use default */
if (num_kanal != num_audiodev) {
fprintf(stderr, "You need to specify as many sound devices as you have channels.\n");
exit(0);
}
if (mandatory) {
print_help(argv[0]);
return 0;
}
/* SDR always requires emphasis */
if (use_sdr) {
do_pre_emphasis = 1;
do_de_emphasis = 1;
}
/* no SDR, no squelch */
if (!use_sdr && !isinf(squelch_db)) {
fprintf(stderr, "Cannot use squelch without SDR! Analog receivers don't give use RSSI.\n");
goto fail;
}
/* inits */
fm_init(fast_math);
init_voice(samplerate);
dsp_init();
/* create transceiver instance */
for (i = 0; i < num_kanal; i++) {
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);
if (rc < 0) {
fprintf(stderr, "Failed to create transceiver instance. Quitting!\n");
goto fail;
}
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);
}
main_mobile(&quit, latency, interval, NULL, station_id, 4);
fail:
/* destroy transceiver instance */
while (sender_head)
jolly_destroy(sender_head);
/* exits */
fm_exit();
return 0;
}