4 * Copyright (c) 2008 James McKenzie <james@fishsoup.dhs.org>,
9 static char rcsid[] = "$Id$";
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58 * Revision 1.3 2008/02/09 15:47:28 james
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67 speed_t_to_baud (speed_t s)
153 baud_to_speed_t (int baud)
238 tty_pre_select (TTY * t, fd_set * rfds, fd_set * wfds)
241 struct timeval now, dif;
246 gettimeofday (&now, NULL);
247 timersub (&now, &t->hangup_clock, &dif);
251 ioctl (t->rfd, TIOCMBIS, &line);
257 FD_SET (t->rfd, rfds);
261 tty_get_status (TTY * t, TTY_Status * s)
265 ioctl (t->rfd, TIOCMGET, &s->lines);
267 if (tcgetattr (t->rfd, &s->termios))
270 s->baud = speed_t_to_baud (cfgetispeed (&s->termios));
271 s->blocked = t->blocked;
277 tty_get_baud (TTY * t)
279 struct termios tios = { 0 };
281 if (tcgetattr (t->rfd, &tios))
284 return speed_t_to_baud (cfgetispeed (&tios));
289 tty_set_baud (TTY * t, int rate)
291 struct termios tios = { 0 };
293 speed_t s = baud_to_speed_t (rate);
295 if (s == (speed_t) - 1)
298 if (tcgetattr (t->rfd, &tios))
301 cfsetispeed (&tios, s);
302 cfsetospeed (&tios, s);
304 tcsetattr (t->rfd, TCSANOW, &tios);
308 tty_send_break (TTY * t)
310 tcsendbreak (t->wfd, 0);
314 tty_set_flow (TTY * t, int flow)
316 struct termios tios = { 0 };
318 if (tcgetattr (t->rfd, &tios))
322 tios.c_cflag |= CRTSCTS;
324 tios.c_cflag &= ~CRTSCTS;
326 tcsetattr (t->rfd, TCSANOW, &tios);
336 ioctl (t->rfd, TIOCMBIC, &line);
339 gettimeofday (&t->hangup_clock, NULL);
344 void tty_winch(TTY * t,CRT_Pos size)
346 struct winsize sz = { 0 };
351 ioctl (t->wfd, TIOCSWINSZ, &sz);
362 int bit_edge_frequency[8];
369 #define bit(p,b,z,o) \
390 tty_bit_analyse (Context * c, int err, int ch)
394 TTY_Parser *p = c->tp;
399 for (d = 1; d < 0x100; d <<= 1)
401 bit (p, ch & d, zc, oc);
410 gettimeofday (&p->lasterr, NULL);
416 "<tty_bit_analyse: 0%d%d%d%d%d%d%d%d1 [%d,%d,%d,%d,%d,%d,%d,%d,%d,%d]>",
417 ch & 0x01 ? 1 : 0, ch & 0x02 ? 1 : 0, ch & 0x04 ? 1 : 0,
418 ch & 0x08 ? 1 : 0, ch & 0x10 ? 1 : 0, ch & 0x20 ? 1 : 0,
419 ch & 0x40 ? 1 : 0, ch & 0x80 ? 1 : 0, p->bitfreq[0],
420 p->bitfreq[1], p->bitfreq[2], p->bitfreq[3], p->bitfreq[4],
421 p->bitfreq[5], p->bitfreq[6], p->bitfreq[7], p->bitfreq[8],
428 tty_parse_reset (Context * c)
430 TTY_Parser *p = c->tp;
431 memset (p->bitfreq, 0, sizeof (p->bitfreq));
437 tty_analyse (Context * c)
439 TTY_Parser *p = c->tp;
440 struct timeval now, dif;
449 gettimeofday (&now, NULL);
451 timersub (&now, &p->lasterr, &dif);
462 for (i = 0; i < TTY_BITFREQ_LEN; ++i)
464 if (p->bitfreq[i] > max)
472 i = tty_get_baud (c->t);
478 /*Closest bit edge is one bit, so the baud rate is too low */
479 p->guessed_baud = -1;
485 p->guessed_baud = i / j;
491 if (p->guessed_baud == -1)
493 log_f (c->l, "<tty_analyse: %6d errors, current rate %db is too low>",
498 log_f (c->l, "<tty_analyse: %6d errors, current rate %db, suggest %db>",
499 p->biterrs, i, p->guessed_baud);
505 tty_parser_new (void)
509 p = (TTY_Parser *) malloc (sizeof (TTY_Parser));
511 memset (p, 0, sizeof (TTY_Parser));
517 tty_parse (Context * c, uint8_t * buf, int len)
532 tty_bit_analyse (c, 0, *buf);
533 utf8_parse (c, *buf);
539 log_f (c->l, "%s:%d DLE parsing error: \\377 \\%03o", __FILE__,
543 else if (p->in_errmark)
547 log_f (c->l, "<tty reports error: \\377 \\000 \\%03o>",
548 __FILE__, __LINE__, *buf);
550 tty_bit_analyse (c, 1, *buf);
554 utf8_parse (c, *buf);
556 utf8_parse (c, SYM_CHAR_RESET);
559 else if (*buf == DLE)
566 tty_bit_analyse (c, 0, *buf);
570 utf8_parse (c, *buf);