/* process function for help_state=0 */
static void help_send_escape(int fd, char c) {
struct termios pts; /* termios settings on port */
in_escape = 0;
help_state = 0;
switch (c) {
case 'x':
/* restore termios settings and exit */
write(STDOUT_FILENO, "\n", 1);
cleanup_termios(0);
break;
case 'q': /* quit help */
break;
case 'l': /* log on/off */
if (flog == 0) { /* open log file */
open_logFile(log_file);
}
else { /* close log file */
close_logFile();
}
break;
case 's': /* script active/inactive */
script_init(scr_name);
script = (script)? 0: 1;
break;
case 'b': /* send break */
/* send a break */
tcsendbreak(fd, 0);
break;
case 't': /* set terminal */
help_state = 1;
help_terminal();
in_escape = 1;
break;
case '~': /* display it again */
help_escape();
break;
default:
/* pass the character through */
/* "C-\ C-\" sends "C-\" */
write(fd, &c, 1);
break;
}
if (in_escape == 0)
help_done();
return;
}
int main(int argc, char *argv[]) {
struct termios pts; /* termios settings on port */
struct termios sts; /* termios settings on stdout/in */
struct sigaction sact; /* used to initialize the signal handler */
int opt;
strcpy(device, "/dev/ttyUSB0");
while ( (opt = getopt(argc, argv, "h?D:b:d:p:f:s:e:r:")) != -1 ) {
switch (opt) {
/* help message */
case 'h':
usage();
return 0;
break;
/* set the serial device name */
case 'D':
strcpy(device, optarg);
break;
/* set the baud rate */
case 'b':
curr_state.baud_rate = atoi(optarg);
break;
/* data bits */
case 'd':
curr_state.data_bits = optarg[0];
break;
/* parity */
case 'p':
curr_state.parity = optarg[0];
break;
/* setup flow control */
case 'f':
curr_state.flow_control = optarg[0];
break;
/* stop bits */
case 's':
curr_state.stop_bits = optarg[0];
break;
/* echo type */
case 'e':
curr_state.echo_type = optarg[0];
break;
/* NL to CR mapping on output */
case 'r':
curr_state.onlcr_mapping = optarg[0];
break;
default:
break;
} /* end switch */
} /* end while */
/* open the device */
pf = open(device, O_RDWR);
if (pf < 0) {
fprintf(stderr, "\n ERROR: cannot open device %s\n\n", device);
exit(1);
}
/* save old serial port config */
tcgetattr(pf, &pts);
memcpy(&pots, &pts, sizeof(pots));
/* setup serial port with new settings */
init_comm(&pts);
fprintf(stdout, "\nWelcome to Nanocomsole " VERSION);
display_state();
fprintf(stdout, "Press CTRL+T for menu options\n\n");
/* Now deal with the local terminal side */
tcgetattr(STDIN_FILENO, &sts);
memcpy(&sots, &sts, sizeof(sots)); /* to be used upon exit */
init_stdin(&sts);
tcsetattr(STDIN_FILENO, TCSANOW, &sts);
/* set the signal handler to restore the old termios handler */
sact.sa_handler = cleanup_termios;
sigaction(SIGHUP, &sact, NULL);
sigaction(SIGINT, &sact, NULL);
sigaction(SIGPIPE, &sact, NULL);
sigaction(SIGTERM, &sact, NULL);
/* run the main program loop */
mux_loop(pf);
/* unreachable line ?? */
cleanup_termios(0);
return 0;
}