4 * Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
9 static char rcsid[] = "$Id$";
13 * Revision 1.16 2008/02/28 12:12:25 james
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16 * Revision 1.15 2008/02/28 00:10:44 james
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19 * Revision 1.14 2008/02/23 13:05:58 staffcvs
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22 * Revision 1.13 2008/02/23 11:48:37 james
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28 * Revision 1.11 2008/02/20 18:31:53 james
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31 * Revision 1.10 2008/02/15 23:52:12 james
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34 * Revision 1.9 2008/02/15 03:32:07 james
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37 * Revision 1.8 2008/02/14 10:36:18 james
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40 * Revision 1.7 2008/02/14 10:34:30 james
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43 * Revision 1.6 2008/02/13 16:59:34 james
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49 * Revision 1.4 2008/02/12 22:36:46 james
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52 * Revision 1.3 2008/02/09 15:47:28 james
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61 speed_t_to_baud (speed_t s)
147 baud_to_speed_t (int baud)
232 tty_pre_select (TTY * t, fd_set * rfds, fd_set * wfds)
235 struct timeval now, dif;
240 gettimeofday (&now, NULL);
241 timersub (&now, &t->hangup_clock, &dif);
245 ioctl (t->rfd, TIOCMBIS, &line);
251 FD_SET (t->rfd, rfds);
255 tty_get_status (TTY * t, TTY_Status * s)
259 ioctl (t->rfd, TIOCMGET, &s->lines);
261 if (tcgetattr (t->rfd, &s->termios))
264 s->baud = speed_t_to_baud (cfgetispeed (&s->termios));
265 s->blocked = t->blocked;
271 tty_get_baud (TTY * t)
273 struct termios tios = { 0 };
275 if (tcgetattr (t->rfd, &tios))
278 return speed_t_to_baud (cfgetispeed (&tios));
283 tty_set_baud (TTY * t, int rate)
285 struct termios tios = { 0 };
287 speed_t s = baud_to_speed_t (rate);
289 if (s == (speed_t) - 1)
292 if (tcgetattr (t->rfd, &tios))
295 cfsetispeed (&tios, s);
296 cfsetospeed (&tios, s);
298 tcsetattr (t->rfd, TCSANOW, &tios);
302 tty_send_break (TTY * t)
304 tcsendbreak (t->wfd, 0);
308 tty_set_flow (TTY * t, int flow)
310 struct termios tios = { 0 };
312 if (tcgetattr (t->rfd, &tios))
316 tios.c_cflag |= CRTSCTS;
318 tios.c_cflag &= ~CRTSCTS;
320 tcsetattr (t->rfd, TCSANOW, &tios);
324 void tty_winch(TTY *y,CRT_Pos p)
336 ioctl (t->rfd, TIOCMBIC, &line);
339 gettimeofday (&t->hangup_clock, NULL);
350 int bit_edge_frequency[8];
357 #define bit(p,b,z,o) \
378 tty_bit_analyse (Context * c, int err, int ch)
382 TTY_Parser *p = c->tp;
387 for (d = 1; d < 0x100; d <<= 1)
389 bit (p, ch & d, zc, oc);
398 gettimeofday (&p->lasterr, NULL);
404 "<tty_bit_analyse: 0%d%d%d%d%d%d%d%d1 [%d,%d,%d,%d,%d,%d,%d,%d,%d,%d]>",
405 ch & 0x01 ? 1 : 0, ch & 0x02 ? 1 : 0, ch & 0x04 ? 1 : 0,
406 ch & 0x08 ? 1 : 0, ch & 0x10 ? 1 : 0, ch & 0x20 ? 1 : 0,
407 ch & 0x40 ? 1 : 0, ch & 0x80 ? 1 : 0, p->bitfreq[0],
408 p->bitfreq[1], p->bitfreq[2], p->bitfreq[3], p->bitfreq[4],
409 p->bitfreq[5], p->bitfreq[6], p->bitfreq[7], p->bitfreq[8],
416 tty_parse_reset (Context * c)
418 TTY_Parser *p = c->tp;
419 memset (p->bitfreq, 0, sizeof (p->bitfreq));
425 tty_analyse (Context * c)
427 TTY_Parser *p = c->tp;
428 struct timeval now, dif;
437 gettimeofday (&now, NULL);
439 timersub (&now, &p->lasterr, &dif);
450 for (i = 0; i < TTY_BITFREQ_LEN; ++i)
452 if (p->bitfreq[i] > max)
460 i = tty_get_baud (c->t);
466 /*Closest bit edge is one bit, so the baud rate is too low */
467 p->guessed_baud = -1;
473 p->guessed_baud = i / j;
479 if (p->guessed_baud == -1)
481 log_f (c->l, "<tty_analyse: %6d errors, current rate %db is too low>",
486 log_f (c->l, "<tty_analyse: %6d errors, current rate %db, suggest %db>",
487 p->biterrs, i, p->guessed_baud);
493 tty_parser_new (void)
497 p = (TTY_Parser *) malloc (sizeof (TTY_Parser));
499 memset (p, 0, sizeof (TTY_Parser));
505 tty_parse (Context * c, uint8_t * buf, int len)
520 tty_bit_analyse (c, 0, *buf);
521 utf8_parse (c, *buf);
527 log_f (c->l, "%s:%d DLE parsing error: \\377 \\%03o", __FILE__,
531 else if (p->in_errmark)
535 log_f (c->l, "<tty reports error: \\377 \\000 \\%03o>",
536 __FILE__, __LINE__, *buf);
538 tty_bit_analyse (c, 1, *buf);
542 utf8_parse (c, *buf);
544 utf8_parse (c, SYM_CHAR_RESET);
547 else if (*buf == DLE)
554 tty_bit_analyse (c, 0, *buf);
558 utf8_parse (c, *buf);