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#ident "$Id: ltest.c,v 1.6 2002/11/23 20:35:50 gert Exp $ Copyright (c) Gert Doering"
/* ltest.c
*
* show status of all the RS232 lines (RTS, CTS, ...)
* Calls routines in io.c, tio.c
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include "mgetty.h"
#include "tio.h"
char * Device;
int delay_time = 0; /* in milliseconds, 0 = one-shot */
/* we don't want logging here */
#ifdef USE_VARARGS
int lprintf() { return 0; }
#else
int lprintf(int level, const char *format, ...) { return 0; }
#endif
int lputs( int level, char * string ) { return 0; }
int main( int argc, char ** argv )
{
int opt, fd, f, last_f;
time_t ti;
struct tm * tm;
boolean opt_delta = FALSE; /* show only deltas */
boolean opt_keyboard = FALSE; /* read commands from keyboard */
TIO tio, save_tio; /* for stdin */
while ((opt = getopt(argc, argv, "i:m:dk")) != EOF)
{
switch( opt )
{
case 'i': delay_time = 1000 * atoi(optarg); break; /* secs */
case 'm': delay_time = atoi(optarg); break; /* msecs */
case 'd': opt_delta = TRUE; break;
case 'k': opt_keyboard = TRUE; break;
default:
fprintf( stderr, "Valid options: -i <seconds-delay>, -m <msec-delay>, -d, -k\n" ); exit(7);
}
}
if ( optind < argc ) /* argument == tty to use */
{
Device = argv[optind++];
fd = open( Device, O_RDONLY | O_NDELAY );
if ( fd < 0 )
{ perror( "Opening device failed" ); exit(17); }
fcntl( fd, F_SETFL, O_RDONLY );
}
else /* default: use stdin */
{
Device = "stdin"; fd = fileno(stdin);
}
/* if input from keyboard allowed, set stdin to "raw"
*/
if ( opt_keyboard )
{
if ( fd == fileno(stdin) )
{
fprintf( stderr, "can't read modem + keyboard data from stdin\n");
exit(7);
}
if ( tio_get( 0, &tio ) == ERROR )
{
fprintf( stderr, "can't read termios settings for keyboard\n" );
exit(1);
}
save_tio = tio;
tio_mode_raw( &tio );
if ( tio_set( 0, &tio ) == ERROR )
{
fprintf( stderr, "can't set termios settings for keyboard\n" );
exit(2);
}
printf( "keyboard active. Press 'D' to change DTR, 'R' to change RTS.\r\n" );
}
last_f = -1;
do
{
f = tio_get_rs232_lines( fd );
if ( f == -1 )
{
printf( "%s: can't read RS232 line status (-1)\n", Device );
exit(17);
}
/* display data only if something changed *or* if (not opt_delta)
*/
if ( ! opt_delta || f != last_f )
{
ti = time(NULL);
tm = localtime(&ti);
printf( "%s, %02d:%02d:%02d: active lines:", Device,
tm->tm_hour, tm->tm_min, tm->tm_sec );
if ( f & TIO_F_DTR ) printf( " DTR" );
if ( f & TIO_F_DSR ) printf( " DSR" );
if ( f & TIO_F_RTS ) printf( " RTS" );
if ( f & TIO_F_CTS ) printf( " CTS" );
if ( f & TIO_F_DCD ) printf( " DCD" );
if ( f & TIO_F_RI ) printf( " RI" );
if ( f == 0 ) printf( " <none>" );
printf( "\r\n" );
last_f = f;
}
if ( delay_time ) delay( delay_time );
/* check keyboard */
while ( opt_keyboard && check_for_input(0) )
{
char ch;
if ( read( 0, &ch, 1 ) != 1 )
{
fprintf( stderr, "error reading from keyboard, abort.\n");
delay_time=0; break;
}
switch(ch)
{
case 'd': /* toggle DTR */
case 'D':
tio_set_rs232_lines( fd, last_f & TIO_F_DTR? 0: 1, -1 );
break;
case 'r': /* toggle RTS */
case 'R':
tio_set_rs232_lines( fd, -1, last_f & TIO_F_RTS? 0: 1 );
break;
case 3: /* exit */
case 'q':
case 'x':
delay_time = 0; break;
}
}
}
while( delay_time );
if ( opt_keyboard ) /* reset termios settings */
tio_set( 0, &save_tio );
return 0;
}
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