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/*
* calibrate : Modem calibration utility
* Most code is portion of beacon.c of the standard ax25-utils package
* F1OAT 980321
* mods by N1URO 151123
*/
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include <signal.h>
#include <time.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <netax25/axlib.h>
#include <netax25/axconfig.h>
#include <netax25/nrconfig.h>
#include <netax25/rsconfig.h>
#include <netax25/procutils.h>
#include <netax25/mheard.h>
#include <netax25/daemon.h>
#define BUFLEN 256
#define NBFRAMES 100
#define TEMPO 1000
static void Usage(void)
{
fprintf(stderr, "Usage : calibrate [-t ms] interface\n");
exit(1);
}
int main(int argc, char *argv[])
{
struct full_sockaddr_ax25 dest;
struct full_sockaddr_ax25 src;
int i, s, dlen, len, tempo = TEMPO;
char *port;
char *srccall = NULL, *destcall = "CAL";
char buffer[BUFLEN];
fd_set rfds;
struct timeval tv;
if (argc < 2) Usage();
while ((s = getopt(argc, argv, "t:")) != -1) {
switch (s) {
case 't':
tempo = atoi(optarg);
break;
case ':':
fprintf(stderr, "calibrate: option -t needs a duration in ms\n");
return 1;
case '?':
Usage();
return 1;
}
}
if (optind == argc) {
Usage();
return 1;
}
port = argv[optind];
if (ax25_config_load_ports() == 0) {
fprintf(stderr, "calibrate: no AX.25 interfaces defined\n");
return 1;
}
if ((srccall = ax25_config_get_addr(port)) == NULL) {
fprintf(stderr, "calibrate: invalid AX.25 interface setting - %s\n", port);
return 1;
}
if ((dlen = ax25_aton(destcall, &dest)) == -1) {
fprintf(stderr, "calibrate: unable to convert callsign '%s'\n", destcall);
return 1;
}
if ((len = ax25_aton(srccall, &src)) == -1) {
fprintf(stderr, "calibrate: unable to convert callsign '%s'\n", srccall);
return 1;
}
if ((s = socket(AF_AX25, SOCK_DGRAM, 0)) == -1) {
perror("socket");
return 1;
}
if (bind(s, (struct sockaddr *)&src, len) == -1) {
perror("bind");
return 1;
}
printf("Press return to stop calibrate\n");
for (i = 0 ; i < BUFLEN ; i++)
buffer[i] = 0x55;
for (i = 0 ; i < NBFRAMES ; i++) {
/* fd_set rfds;
struct timeval tv;
*/
tv.tv_sec = tempo / 1000;
tv.tv_usec = (tempo % 1000) * 1000;
FD_ZERO(&rfds);
FD_SET(0, &rfds);
if (select(1, &rfds, NULL, NULL, &tv) == 1) break;
buffer[0] = (i / 100) + '0';
buffer[1] = ((i % 100) / 10) + '0';
buffer[2] = (i % 10) + '0';
if (sendto(s, buffer, BUFLEN, 0, (struct sockaddr *)&dest, dlen) == -1) {
perror("sendto");
}
}
close(s);
return 0;
}
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