210 lines
6.8 KiB
C
210 lines
6.8 KiB
C
/* B-Netz 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 <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <math.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 "../anetz/freiton.h"
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#include "../anetz/besetztton.h"
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#include "../liboptions/options.h"
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#include "bnetz.h"
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#include "dsp.h"
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#include "stations.h"
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#include "ansage.h"
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int gfs = 2;
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int metering = 20;
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const char *paging = "tone";
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double squelch_db = -INFINITY;
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void print_help(const char *arg0)
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{
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main_mobile_print_help(arg0, "[-G <gfs>] ");
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/* - - */
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printf(" -G --gfs <gruppenfreisignal> | <lat>,<lon>\n");
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printf(" Gruppenfreisignal\" 1..9 | 19 | 10..18 (default = '%d')\n", gfs);
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printf(" Alternative give your coordinates of your location, to find closest\n");
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printf(" base station. (e.g. '--gfs 54.487291,9.069993') Or use '--gfs list' to\n");
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printf(" get a list of all base station locations.\n");
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printf(" -G --gfs 19\n");
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printf(" Set to 19 in order to make the phone transmit at 100 mW instead of\n");
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printf(" full 15 Watts. If supported, the phone uses the channel with low power\n");
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printf(" (Kanal kleiner Leistung).\n");
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printf(" -M --gebuehrenimpuls <secods> | -<seconds> | 0\n");
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printf(" Send metering pulses every given number of seconds or 0 to turn off.\n");
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printf(" Pulses will be sent on outgoing calls only and only if mobile station\n");
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printf(" requests it. Use negative value to force metering pulses for all calls.\n");
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printf(" (default = %d)\n", metering);
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printf(" -P --paging tone | notone | positive | negative | <file>=<on>:<off>\n");
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printf(" Send a tone, give a signal or write to a file when switching to\n");
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printf(" channel 19. (paging the phone).\n");
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printf(" 'tone', 'positive', 'negative' is sent on second audio channel.\n");
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printf(" 'tone' sends a tone whenever channel 19 is switched.\n");
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printf(" 'notone' sends a tone whenever channel 19 is NOT switched.\n");
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printf(" 'positive' sends a positive signal for channel 19, else negative.\n");
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printf(" 'negative' sends a negative signal for channel 19, else positive.\n");
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printf(" Example: /sys/class/gpio/gpio17/value=1:0 writes a '1' to\n");
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printf(" /sys/class/gpio/gpio17/value to switching to channel 19 and a '0' to\n");
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printf(" switch back. (default = %s)\n", paging);
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printf(" -S --squelch <dB>\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("\nstation-id: Give 5 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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static void add_options(void)
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{
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main_mobile_add_options();
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option_add('G', "gfs", 1);
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option_add('M', "gebuehrenimpuls", 1);
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option_add('P', "paging", 1);
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option_add('S', "squelch", 1);
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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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char *p;
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switch (short_option) {
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case 'G':
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if (!strcasecmp(argv[argi], "list")) {
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station_list();
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return 0;
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}
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if ((p = strchr(argv[argi], ','))) {
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gfs = get_station_by_coordinates(atof(argv[argi]), atof(p + 1));
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if (gfs == 0)
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return -EINVAL;
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} else
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gfs = atoi(argv[argi]);
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break;
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case 'M':
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metering = atoi(argv[argi]);
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break;
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case 'P':
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paging = strdup(argv[argi]);
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break;
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case 'S':
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if (!strcasecmp(argv[argi], "auto"))
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squelch_db = 0.0;
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else
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squelch_db = atof(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_freiton();
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init_besetzton();
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init_ansage();
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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/bnetz.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) != 5) {
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printf("Given station ID '%s' does not have 5 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, I suggest channel 1 (sound card) or 17 (SDR).\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 (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();
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bnetz_init();
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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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/* create transceiver instance */
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for (i = 0; i < num_kanal; i++) {
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rc = bnetz_create(kanal[i], audiodev[i], use_sdr, samplerate, rx_gain, gfs, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, read_tx_wave, loopback, squelch_db, paging, metering);
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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 to %.3f MHz and receiver " "to %.3f MHz. (%.3f MHz offset)\n", kanal[i], bnetz_kanal2freq(atoi(kanal[i]), 0) / 1e6, bnetz_kanal2freq(atoi(kanal[i]), 1) / 1e6, bnetz_kanal2freq(atoi(kanal[i]), 2) / 1e6);
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printf("To call phone, switch transmitter (using paging signal) to %.3f MHz.\n", bnetz_kanal2freq(19, 0) / 1e6);
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}
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main_mobile(&quit, latency, interval, NULL, station_id, 5);
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fail:
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/* destroy transceiver instance */
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while(sender_head)
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bnetz_destroy(sender_head);
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/* exits */
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fm_exit();
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return 0;
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}
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