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/* A-Netz main
*
* (C) 2016 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 <errno.h>
#include <math.h>
#include "../libsample/sample.h"
#include "../libmobile/main_mobile.h"
#include "../libdebug/debug.h"
#include "../libtimer/timer.h"
#include "../libmobile/call.h"
#include "../liboptions/options.h"
#include "../libfm/fm.h"
#include "freiton.h"
#include "besetztton.h"
#include "anetz.h"
#include "dsp.h"
#include "stations.h"
/* settings */
static char operator[32] = "010";
static double page_gain = 1;
static int page_sequence = 0;
static double squelch_db = -INFINITY;
void print_help(const char *arg0)
{
main_mobile_print_help(arg0, "[-V 12] ");
/* - - */
printf(" -O --operator <number>\n");
printf(" Give number to dial when mobile station initiated a call. A-Netz does\n");
printf(" not support automatic dialing, so operator assistance is required.\n");
printf(" By default, the operator '%s' is dialed.\n", operator);
printf(" -G --geo <lat>,<lon>\n");
printf(" Give your coordinates of your location, to find closest base station.\n");
printf(" (e.g. '--geo 51.186959,7.080194') Or use '--geo list' to get a list of\n");
printf(" all base station locations.\n");
printf(" -V --page-gain <dB>\n");
printf(" Raise the gain of paging tones to compensate loss due to pre-emphasis\n");
printf(" of the transmitter. (If you can't disable it.)\n");
printf(" -P --page-sequence 0 | <ms>\n");
printf(" Cycle paging tones, rather than sending simultaniously. Try 100.\n");
printf(" (default = '%d')\n", page_sequence);
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("\nstation-id: Give (last) 5 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('O', "operator", 1);
option_add('G', "geo", 1);
option_add('V', "page-gain", 1);
option_add('P', "page-sequence", 1);
option_add('S', "squelch", 1);
}
static int handle_options(int short_option, int argi, char **argv)
{
char *p;
double gain_db;
switch (short_option) {
case 'O':
strncpy(operator, argv[argi], sizeof(operator) - 1);
operator[sizeof(operator) - 1] = '\0';
break;
case 'G':
if (!strcasecmp(argv[argi], "list")) {
station_list();
return 0;
}
if ((p = strchr(argv[argi], ','))) {
get_station_by_coordinates(atof(argv[argi]), atof(p + 1));
return 0;
}
fprintf(stderr, "Invalid geo parameter\n");
return -EINVAL;
case 'V':
gain_db = atof(argv[argi]);
page_gain = pow(10, gain_db / 20.0);
break;
case 'P':
page_sequence = atoi(argv[argi]);
break;
case 'S':
if (!strcasecmp(argv[argi], "auto"))
squelch_db = 0.0;
else
squelch_db = atof(argv[argi]);
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 i;
/* a-netz does not use emphasis, so disable it */
uses_emphasis = 0;
/* init common tones */
init_freiton();
init_besetzton();
main_mobile_init();
/* handle options / config file */
add_options();
rc = options_config_file("~/.osmocom/analog/anetz.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) != 5 && strlen(station_id) != 7) {
printf("Given station ID '%s' does not have 7 or (the last) 5 digits\n", station_id);
return 0;
}
if (strlen(station_id) > 5)
station_id += strlen(station_id) - 5;
}
if (!num_kanal) {
printf("No channel (\"Kanal\") is specified, I suggest channel 30.\n\n");
print_help(argv[0]);
return 0;
}
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);
}
/* inits */
fm_init(fast_math);
dsp_init();
anetz_init();
/* create transceiver instance */
for (i = 0; i < num_kanal; i++) {
rc = anetz_create(kanal[i], audiodev[i], use_sdr, samplerate, rx_gain, page_gain, page_sequence, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, read_tx_wave, loopback, squelch_db, operator);
if (rc < 0) {
fprintf(stderr, "Failed to create \"Sender\" instance. Quitting!\n");
goto fail;
}
printf("Base station on channel %s ready, please tune transmitter to %.3f MHz and receiver to %.3f MHz. (%.3f MHz offset)\n", kanal[i], anetz_kanal2freq(atoi(kanal[i]), 0) / 1e6, anetz_kanal2freq(atoi(kanal[i]), 1) / 1e6, anetz_kanal2freq(atoi(kanal[i]), 2) / 1e6);
}
main_mobile(&quit, latency, interval, NULL, station_id, 5);
fail:
/* destroy transceiver instance */
while (sender_head)
anetz_destroy(sender_head);
/* exits */
fm_exit();
return 0;
}
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