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A-Netz: Option to set gain of paging tones

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This commit is contained in:
Andreas Eversberg
2017-01-08 11:22:24 +01:00
parent d28467c125
commit bf0abd627d
6 changed files with 46 additions and 29 deletions
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18
src/anetz/main.c
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@@ -22,6 +22,7 @@
#include <getopt.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include "../common/main.h"
#include "../common/debug.h"
#include "../common/timer.h"
@@ -35,17 +36,21 @@
#include "image.h"
/* settings */
double page_gain = 1;
int page_sequence = 0;
double lossdetect = 0;
void print_help(const char *arg0)
{
print_help_common(arg0, "");
print_help_common(arg0, "[-V 12] ");
/* - - */
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);
@@ -61,15 +66,17 @@ static int handle_options(int argc, char **argv)
{
int skip_args = 0;
char *p;
double gain_db;
static struct option long_options_special[] = {
{"geo", 1, 0, 'G'},
{"page-gain", 1, 0, 'V'},
{"page-sequence", 1, 0, 'P'},
{"loss", 1, 0, 'L'},
{0, 0, 0, 0}
};
set_options_common("G:P:L:", long_options_special);
set_options_common("G:V:P:L:", long_options_special);
while (1) {
int option_index = 0, c;
@@ -92,6 +99,11 @@ static int handle_options(int argc, char **argv)
fprintf(stderr, "Invalid geo parameter\n");
exit(0);
break;
case 'V':
gain_db = atof(optarg);
page_gain = pow(10, gain_db / 20.0);
skip_args += 2;
break;
case 'P':
page_sequence = atoi(optarg);
skip_args += 2;
@@ -171,7 +183,7 @@ int main(int argc, char *argv[])
/* create transceiver instance */
for (i = 0; i < num_kanal; i++) {
rc = anetz_create(kanal[i], audiodev[i], samplerate, rx_gain, page_sequence, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, loopback, lossdetect / 100.0);
rc = anetz_create(kanal[i], audiodev[i], samplerate, rx_gain, page_gain, page_sequence, do_pre_emphasis, do_de_emphasis, write_rx_wave, write_tx_wave, read_rx_wave, loopback, lossdetect / 100.0);
if (rc < 0) {
fprintf(stderr, "Failed to create \"Sender\" instance. Quitting!\n");
goto fail;