]> sigrok.org Git - libserialport.git/blame - serialport.c
projects / libserialport.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
windows: Always check and set ReadTotalTimeoutMultiplier.
[libserialport.git] / serialport.c
CommitLineData
74510d4b
ML		 1/*
2 * This file is part of the libserialport project.
3 *
4 * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com>
5 * Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de>
6 * Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li>
31b3a8f5 7 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
a93fb468 8 * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org>
74510d4b
ML		 9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as
12 * published by the Free Software Foundation, either version 3 of the
13 * License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
f6a1fb65 24#include "libserialport.h"
e33dcf90 25#include "libserialport_internal.h"
da2748bf 26
6c6aebe7 27static const struct std_baudrate std_baudrates[] = {
da2748bf
ML		 28#ifdef _WIN32
29 /*
30 * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
31 * have documented CBR_* macros.
32 */
33 BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
34 BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
eac329d2 35 BAUD(115200), BAUD(128000), BAUD(256000),
da2748bf 36#else
eac329d2
UH		 37 BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
38 BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
39 BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
40 BAUD(230400),
da2748bf 41#if !defined(__APPLE__) && !defined(__OpenBSD__)
eac329d2 42 BAUD(460800),
da2748bf
ML		 43#endif
44#endif
45};
46
6c6aebe7
UH		 47#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
48
863b35e6
ML		 49void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
50
eb6ed20f
ML		 51static enum sp_return get_config(struct sp_port *port, struct port_data *data,
52 struct sp_port_config *config);
e33dcf90 53
eb6ed20f
ML		 54static enum sp_return set_config(struct sp_port *port, struct port_data *data,
55 const struct sp_port_config *config);
80186526 56
970f279a 57SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 58{
59 struct sp_port *port;
5a8810e2 60#ifndef NO_PORT_METADATA
a93fb468 61 enum sp_return ret;
5a8810e2 62#endif
5919c913 63 int len;
d54e9004 64
c33efc48
ML		 65 TRACE("%s, %p", portname, port_ptr);
66
32b5ac05 67 if (!port_ptr)
c33efc48 68 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 69
77f262c4
ML		 70 *port_ptr = NULL;
71
d4babed2 72 if (!portname)
c33efc48 73 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 74
7890cef6 75 DEBUG_FMT("Building structure for port %s", portname);
ea667be7 76
d54e9004 77 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 78 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 79
5919c913
ML		 80 len = strlen(portname) + 1;
81
eac329d2 82 if (!(port->name = malloc(len))) {
d54e9004 83 free(port);
c33efc48 84 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 85 }
86
87 memcpy(port->name, portname, len);
88
8f471c66 89#ifdef _WIN32
e31f2c6b 90 port->usb_path = NULL;
8f471c66
ML		 91 port->hdl = INVALID_HANDLE_VALUE;
92#else
93 port->fd = -1;
94#endif
95
e33dcf90
ML		 96 port->description = NULL;
97 port->transport = SP_TRANSPORT_NATIVE;
98 port->usb_bus = -1;
99 port->usb_address = -1;
100 port->usb_vid = -1;
101 port->usb_pid = -1;
102 port->usb_manufacturer = NULL;
103 port->usb_product = NULL;
104 port->usb_serial = NULL;
105 port->bluetooth_address = NULL;
106
e4ce975a 107#ifndef NO_PORT_METADATA
e33dcf90 108 if ((ret = get_port_details(port)) != SP_OK) {
a93fb468
AJ		 109 sp_free_port(port);
110 return ret;
111 }
e4ce975a 112#endif
a93fb468 113
77f262c4
ML		 114 *port_ptr = port;
115
c33efc48 116 RETURN_OK();
d54e9004
ML		 117}
118
970f279a 119SP_API char *sp_get_port_name(const struct sp_port *port)
1c5aae9d
ML		 120{
121 TRACE("%p", port);
122
123 if (!port)
124 return NULL;
125
9caa2e86 126 RETURN_STRING(port->name);
1c5aae9d
ML		 127}
128
f1480939 129SP_API char *sp_get_port_description(const struct sp_port *port)
a93fb468
AJ		 130{
131 TRACE("%p", port);
132
133 if (!port || !port->description)
134 return NULL;
135
9caa2e86 136 RETURN_STRING(port->description);
a93fb468
AJ		 137}
138
ad036cc8 139SP_API enum sp_transport sp_get_port_transport(const struct sp_port *port)
a93fb468
AJ		 140{
141 TRACE("%p", port);
142
143 if (!port)
144 RETURN_ERROR(SP_ERR_ARG, "Null port");
145
9caa2e86 146 RETURN_INT(port->transport);
a93fb468
AJ		 147}
148
970f279a
AJ		 149SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
150 int *usb_bus,int *usb_address)
a93fb468
AJ		 151{
152 TRACE("%p", port);
153
154 if (!port)
155 RETURN_ERROR(SP_ERR_ARG, "Null port");
156 if (port->transport != SP_TRANSPORT_USB)
157 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 158 if (port->usb_bus < 0 || port->usb_address < 0)
159 RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
a93fb468 160
dc422c04
UH		 161 if (usb_bus)
162 *usb_bus = port->usb_bus;
163 if (usb_address)
164 *usb_address = port->usb_address;
a93fb468
AJ		 165
166 RETURN_OK();
167}
168
970f279a
AJ		 169SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
170 int *usb_vid, int *usb_pid)
a93fb468
AJ		 171{
172 TRACE("%p", port);
173
174 if (!port)
175 RETURN_ERROR(SP_ERR_ARG, "Null port");
176 if (port->transport != SP_TRANSPORT_USB)
177 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 178 if (port->usb_vid < 0 || port->usb_pid < 0)
179 RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
a93fb468 180
dc422c04
UH		 181 if (usb_vid)
182 *usb_vid = port->usb_vid;
183 if (usb_pid)
184 *usb_pid = port->usb_pid;
a93fb468
AJ		 185
186 RETURN_OK();
187}
188
970f279a 189SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port)
a93fb468
AJ		 190{
191 TRACE("%p", port);
192
193 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
194 return NULL;
195
9caa2e86 196 RETURN_STRING(port->usb_manufacturer);
a93fb468
AJ		 197}
198
970f279a 199SP_API char *sp_get_port_usb_product(const struct sp_port *port)
a93fb468
AJ		 200{
201 TRACE("%p", port);
202
203 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
204 return NULL;
205
9caa2e86 206 RETURN_STRING(port->usb_product);
a93fb468
AJ		 207}
208
970f279a 209SP_API char *sp_get_port_usb_serial(const struct sp_port *port)
a93fb468
AJ		 210{
211 TRACE("%p", port);
212
213 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
214 return NULL;
215
9caa2e86 216 RETURN_STRING(port->usb_serial);
a93fb468
AJ		 217}
218
970f279a 219SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port)
a93fb468
AJ		 220{
221 TRACE("%p", port);
222
223 if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
224 || !port->bluetooth_address)
225 return NULL;
226
9caa2e86 227 RETURN_STRING(port->bluetooth_address);
a93fb468
AJ		 228}
229
970f279a
AJ		 230SP_API enum sp_return sp_get_port_handle(const struct sp_port *port,
231 void *result_ptr)
3c126654 232{
00d8c56d 233 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 234
235 if (!port)
236 RETURN_ERROR(SP_ERR_ARG, "Null port");
5f64c285
UH		 237 if (!result_ptr)
238 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
3c126654
ML		 239
240#ifdef _WIN32
241 HANDLE *handle_ptr = result_ptr;
242 *handle_ptr = port->hdl;
243#else
244 int *fd_ptr = result_ptr;
245 *fd_ptr = port->fd;
246#endif
247
248 RETURN_OK();
249}
250
970f279a
AJ		 251SP_API enum sp_return sp_copy_port(const struct sp_port *port,
252 struct sp_port **copy_ptr)
32b5ac05 253{
c33efc48
ML		 254 TRACE("%p, %p", port, copy_ptr);
255
32b5ac05 256 if (!copy_ptr)
c33efc48 257 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 258
259 *copy_ptr = NULL;
260
c33efc48
ML		 261 if (!port)
262 RETURN_ERROR(SP_ERR_ARG, "Null port");
263
264 if (!port->name)
265 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 266
ea667be7
ML		 267 DEBUG("Copying port structure");
268
9caa2e86 269 RETURN_INT(sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 270}
271
970f279a 272SP_API void sp_free_port(struct sp_port *port)
e3b2f7a4 273{
c33efc48
ML		 274 TRACE("%p", port);
275
00d8c56d 276 if (!port) {
c33efc48
ML		 277 DEBUG("Null port");
278 RETURN();
279 }
e3b2f7a4 280
ea667be7
ML		 281 DEBUG("Freeing port structure");
282
e3b2f7a4
ML		 283 if (port->name)
284 free(port->name);
a93fb468
AJ		 285 if (port->description)
286 free(port->description);
287 if (port->usb_manufacturer)
288 free(port->usb_manufacturer);
289 if (port->usb_product)
290 free(port->usb_product);
291 if (port->usb_serial)
292 free(port->usb_serial);
293 if (port->bluetooth_address)
294 free(port->bluetooth_address);
295#ifdef _WIN32
296 if (port->usb_path)
297 free(port->usb_path);
298#endif
e3b2f7a4
ML		 299
300 free(port);
c33efc48
ML		 301
302 RETURN();
e3b2f7a4
ML		 303}
304
970f279a
AJ		 305SP_PRIV struct sp_port **list_append(struct sp_port **list,
306 const char *portname)
3b63f34d
ML		 307{
308 void *tmp;
309 unsigned int count;
f92f1f0c 310
3b63f34d 311 for (count = 0; list[count]; count++);
d54e9004 312 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 313 goto fail;
314 list = tmp;
77f262c4 315 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 316 goto fail;
db2794ce 317 list[count + 1] = NULL;
3b63f34d 318 return list;
f92f1f0c 319
3b63f34d
ML		 320fail:
321 sp_free_port_list(list);
322 return NULL;
323}
324
970f279a 325SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 326{
23e7fa37 327#ifndef NO_ENUMERATION
d54e9004 328 struct sp_port **list;
48a4076f 329 int ret;
23e7fa37 330#endif
24c1a4bb 331
c33efc48
ML		 332 TRACE("%p", list_ptr);
333
dec10e31
ML		 334 if (!list_ptr)
335 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
336
63926415
UH		 337 *list_ptr = NULL;
338
8d12e620
ML		 339#ifdef NO_ENUMERATION
340 RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
341#else
ea667be7
ML		 342 DEBUG("Enumerating ports");
343
8d12e620 344 if (!(list = malloc(sizeof(struct sp_port *))))
c33efc48 345 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 346
347 list[0] = NULL;
3b63f34d 348
48a4076f 349 ret = list_ports(&list);
77f262c4 350
8d12e620 351 if (ret == SP_OK) {
77f262c4 352 *list_ptr = list;
8d12e620
ML		 353 } else {
354 sp_free_port_list(list);
77f262c4
ML		 355 *list_ptr = NULL;
356 }
8d12e620
ML		 357
358 RETURN_CODEVAL(ret);
359#endif
3b63f34d
ML		 360}
361
970f279a 362SP_API void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 363{
364 unsigned int i;
f92f1f0c 365
c33efc48
ML		 366 TRACE("%p", list);
367
dec10e31
ML		 368 if (!list) {
369 DEBUG("Null list");
370 RETURN();
371 }
372
ea667be7
ML		 373 DEBUG("Freeing port list");
374
3b63f34d 375 for (i = 0; list[i]; i++)
e3b2f7a4 376 sp_free_port(list[i]);
3b63f34d 377 free(list);
c33efc48
ML		 378
379 RETURN();
3b63f34d
ML		 380}
381
c33efc48 382#define CHECK_PORT() do { \
dc422c04 383 if (!port) \
c33efc48 384 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dc422c04 385 if (!port->name) \
dec10e31
ML		 386 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
387} while (0)
388#ifdef _WIN32
389#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 390 if (port->hdl == INVALID_HANDLE_VALUE) \
391 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 392} while (0)
74510d4b 393#else
dec10e31 394#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 395 if (port->fd < 0) \
396 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 397} while (0)
74510d4b 398#endif
dec10e31
ML		 399#define CHECK_OPEN_PORT() do { \
400 CHECK_PORT(); \
401 CHECK_PORT_HANDLE(); \
402} while (0)
74510d4b 403
47fcf8ec
ML		 404#ifdef WIN32
405/** To be called after port receive buffer is emptied. */
406static enum sp_return restart_wait(struct sp_port *port)
407{
408 DWORD wait_result;
409
410 if (port->wait_running) {
411 /* Check status of running wait operation. */
412 if (GetOverlappedResult(port->hdl, &port->wait_ovl,
413 &wait_result, FALSE)) {
414 DEBUG("Previous wait completed");
415 port->wait_running = FALSE;
416 } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
417 DEBUG("Previous wait still running");
418 RETURN_OK();
419 } else {
420 RETURN_FAIL("GetOverlappedResult() failed");
421 }
422 }
423
424 if (!port->wait_running) {
425 /* Start new wait operation. */
426 if (WaitCommEvent(port->hdl, &port->events,
427 &port->wait_ovl)) {
428 DEBUG("New wait returned, events already pending");
429 } else if (GetLastError() == ERROR_IO_PENDING) {
430 DEBUG("New wait running in background");
431 port->wait_running = TRUE;
432 } else {
433 RETURN_FAIL("WaitCommEvent() failed");
434 }
435 }
436
437 RETURN_OK();
438}
439#endif
440
970f279a 441SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 442{
bccc7c9f
ML		 443 struct port_data data;
444 struct sp_port_config config;
445 enum sp_return ret;
446
00d8c56d 447 TRACE("%p, 0x%x", port, flags);
c33efc48 448
dec10e31
ML		 449 CHECK_PORT();
450
276ef1b9 451 if (flags > SP_MODE_READ_WRITE)
dec10e31 452 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 453
7890cef6 454 DEBUG_FMT("Opening port %s", port->name);
ea667be7 455
74510d4b 456#ifdef _WIN32
537942c9 457 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 458 char *escaped_port_name;
537942c9 459 COMSTAT status;
99945a1f
ML		 460
461 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 462 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 463 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 464 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
465
74510d4b 466 /* Map 'flags' to the OS-specific settings. */
e3dcf906 467 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 468 if (flags & SP_MODE_READ)
469 desired_access |= GENERIC_READ;
470 if (flags & SP_MODE_WRITE)
74510d4b 471 desired_access |= GENERIC_WRITE;
74510d4b 472
99945a1f 473 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 474 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 475
476 free(escaped_port_name);
477
74510d4b 478 if (port->hdl == INVALID_HANDLE_VALUE)
dc422c04 479 RETURN_FAIL("Port CreateFile() failed");
e3dcf906
ML		 480
481 /* All timeouts initially disabled. */
482 port->timeouts.ReadIntervalTimeout = 0;
483 port->timeouts.ReadTotalTimeoutMultiplier = 0;
484 port->timeouts.ReadTotalTimeoutConstant = 0;
485 port->timeouts.WriteTotalTimeoutMultiplier = 0;
486 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 487
e3dcf906 488 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 489 sp_close(port);
490 RETURN_FAIL("SetCommTimeouts() failed");
491 }
e3dcf906
ML		 492
493 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 494#define INIT_OVERLAPPED(ovl) do { \
495 memset(&port->ovl, 0, sizeof(port->ovl)); \
496 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
497 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
498 == INVALID_HANDLE_VALUE) { \
499 sp_close(port); \
500 RETURN_FAIL(#ovl "CreateEvent() failed"); \
501 } \
502} while (0)
503
504 INIT_OVERLAPPED(read_ovl);
505 INIT_OVERLAPPED(write_ovl);
506 INIT_OVERLAPPED(wait_ovl);
507
508 /* Set event mask for RX and error events. */
509 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 510 sp_close(port);
6f1186aa 511 RETURN_FAIL("SetCommMask() failed");
e3dcf906 512 }
6f1186aa 513
e3dcf906 514 port->writing = FALSE;
47fcf8ec 515 port->wait_running = FALSE;
e3dcf906 516
47fcf8ec
ML		 517 ret = restart_wait(port);
518
519 if (ret < 0) {
520 sp_close(port);
521 RETURN_CODEVAL(ret);
522 }
74510d4b 523#else
e3dcf906 524 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 525
74510d4b 526 /* Map 'flags' to the OS-specific settings. */
276ef1b9 527 if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
74510d4b 528 flags_local |= O_RDWR;
a036341b 529 else if (flags & SP_MODE_READ)
74510d4b 530 flags_local |= O_RDONLY;
a036341b
ML		 531 else if (flags & SP_MODE_WRITE)
532 flags_local |= O_WRONLY;
74510d4b
ML		 533
534 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 535 RETURN_FAIL("open() failed");
bccc7c9f 536#endif
9cb98459 537
e33ab9aa
ML		 538 ret = get_config(port, &data, &config);
539
eac329d2 540 if (ret < 0) {
e33ab9aa 541 sp_close(port);
c33efc48 542 RETURN_CODEVAL(ret);
e33ab9aa 543 }
9cb98459 544
bccc7c9f
ML		 545 /* Set sane port settings. */
546#ifdef _WIN32
547 data.dcb.fBinary = TRUE;
548 data.dcb.fDsrSensitivity = FALSE;
549 data.dcb.fErrorChar = FALSE;
550 data.dcb.fNull = FALSE;
34442106 551 data.dcb.fAbortOnError = FALSE;
bccc7c9f 552#else
b251be4b 553 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 554 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
555#ifdef IUCLC
556 data.term.c_iflag &= ~IUCLC;
557#endif
558 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
559#ifdef OLCUC
560 data.term.c_oflag &= ~OLCUC;
561#endif
562#ifdef NLDLY
563 data.term.c_oflag &= ~NLDLY;
564#endif
565#ifdef CRDLY
566 data.term.c_oflag &= ~CRDLY;
567#endif
568#ifdef TABDLY
569 data.term.c_oflag &= ~TABDLY;
570#endif
571#ifdef BSDLY
572 data.term.c_oflag &= ~BSDLY;
573#endif
574#ifdef VTDLY
575 data.term.c_oflag &= ~VTDLY;
576#endif
577#ifdef FFDLY
578 data.term.c_oflag &= ~FFDLY;
579#endif
b251be4b 580#ifdef OFILL
9cb98459
ML		 581 data.term.c_oflag &= ~OFILL;
582#endif
c3e05092 583 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 584 data.term.c_cc[VMIN] = 0;
b251be4b 585 data.term.c_cc[VTIME] = 0;
9cb98459 586
b251be4b
ML		 587 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
588 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 589#endif
9cb98459 590
537942c9 591#ifdef _WIN32
1a2a1544
UH		 592 if (ClearCommError(port->hdl, &errors, &status) == 0)
593 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 594#endif
595
e33ab9aa
ML		 596 ret = set_config(port, &data, &config);
597
eac329d2 598 if (ret < 0) {
e33ab9aa 599 sp_close(port);
c33efc48 600 RETURN_CODEVAL(ret);
e33ab9aa 601 }
74510d4b 602
c33efc48 603 RETURN_OK();
74510d4b
ML		 604}
605
970f279a 606SP_API enum sp_return sp_close(struct sp_port *port)
74510d4b 607{
c33efc48
ML		 608 TRACE("%p", port);
609
dec10e31 610 CHECK_OPEN_PORT();
74510d4b 611
7890cef6 612 DEBUG_FMT("Closing port %s", port->name);
ea667be7 613
74510d4b
ML		 614#ifdef _WIN32
615 /* Returns non-zero upon success, 0 upon failure. */
616 if (CloseHandle(port->hdl) == 0)
dc422c04 617 RETURN_FAIL("Port CloseHandle() failed");
8f471c66 618 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 619
620 /* Close event handles for overlapped structures. */
621#define CLOSE_OVERLAPPED(ovl) do { \
622 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
623 CloseHandle(port->ovl.hEvent) == 0) \
624 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
625} while (0)
626 CLOSE_OVERLAPPED(read_ovl);
627 CLOSE_OVERLAPPED(write_ovl);
628 CLOSE_OVERLAPPED(wait_ovl);
629
74510d4b
ML		 630#else
631 /* Returns 0 upon success, -1 upon failure. */
632 if (close(port->fd) == -1)
c33efc48 633 RETURN_FAIL("close() failed");
8f471c66 634 port->fd = -1;
74510d4b
ML		 635#endif
636
c33efc48 637 RETURN_OK();
74510d4b
ML		 638}
639
970f279a 640SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 641{
00d8c56d 642 TRACE("%p, 0x%x", port, buffers);
c33efc48 643
dec10e31
ML		 644 CHECK_OPEN_PORT();
645
646 if (buffers > SP_BUF_BOTH)
647 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 648
0ba3e49b 649 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7 650
7890cef6
ML		 651 DEBUG_FMT("Flushing %s buffers on port %s",
652 buffer_names[buffers], port->name);
ea667be7 653
74510d4b 654#ifdef _WIN32
fd8fd11a
ML		 655 DWORD flags = 0;
656 if (buffers & SP_BUF_INPUT)
657 flags |= PURGE_RXCLEAR;
658 if (buffers & SP_BUF_OUTPUT)
659 flags |= PURGE_TXCLEAR;
660
74510d4b 661 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 662 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 663 RETURN_FAIL("PurgeComm() failed");
47fcf8ec
ML		 664
665 if (buffers & SP_BUF_INPUT)
666 TRY(restart_wait(port));
74510d4b 667#else
fd8fd11a 668 int flags = 0;
ad749855 669 if (buffers == SP_BUF_BOTH)
fd8fd11a 670 flags = TCIOFLUSH;
ad749855 671 else if (buffers == SP_BUF_INPUT)
fd8fd11a 672 flags = TCIFLUSH;
ad749855 673 else if (buffers == SP_BUF_OUTPUT)
fd8fd11a
ML		 674 flags = TCOFLUSH;
675
74510d4b 676 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 677 if (tcflush(port->fd, flags) < 0)
c33efc48 678 RETURN_FAIL("tcflush() failed");
74510d4b 679#endif
c33efc48 680 RETURN_OK();
74510d4b
ML		 681}
682
970f279a 683SP_API enum sp_return sp_drain(struct sp_port *port)
69a3739c 684{
c33efc48
ML		 685 TRACE("%p", port);
686
dec10e31 687 CHECK_OPEN_PORT();
69a3739c 688
7890cef6 689 DEBUG_FMT("Draining port %s", port->name);
ea667be7 690
69a3739c
ML		 691#ifdef _WIN32
692 /* Returns non-zero upon success, 0 upon failure. */
693 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 694 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 695 RETURN_OK();
69a3739c 696#else
2c827b21
ML		 697 int result;
698 while (1) {
33fd8804
ML		 699#ifdef __ANDROID__
700 int arg = 1;
701 result = ioctl(port->fd, TCSBRK, &arg);
702#else
2c827b21 703 result = tcdrain(port->fd);
33fd8804 704#endif
2c827b21
ML		 705 if (result < 0) {
706 if (errno == EINTR) {
707 DEBUG("tcdrain() was interrupted");
708 continue;
709 } else {
710 RETURN_FAIL("tcdrain() failed");
711 }
712 } else {
713 RETURN_OK();
714 }
715 }
69a3739c 716#endif
69a3739c
ML		 717}
718
970f279a 719SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf,
1b91c6ea 720 size_t count, unsigned int timeout_ms)
e3dcf906 721{
1b91c6ea 722 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 723
724 CHECK_OPEN_PORT();
725
726 if (!buf)
727 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
728
1b91c6ea 729 if (timeout_ms)
7890cef6 730 DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms",
1b91c6ea 731 count, port->name, timeout_ms);
e3dcf906 732 else
7890cef6
ML		 733 DEBUG_FMT("Writing %d bytes to port %s, no timeout",
734 count, port->name);
e3dcf906
ML		 735
736 if (count == 0)
9caa2e86 737 RETURN_INT(0);
e3dcf906
ML		 738
739#ifdef _WIN32
740 DWORD bytes_written = 0;
741 BOOL result;
742
743 /* Wait for previous non-blocking write to complete, if any. */
744 if (port->writing) {
745 DEBUG("Waiting for previous write to complete");
746 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
747 port->writing = 0;
748 if (!result)
749 RETURN_FAIL("Previous write failed to complete");
750 DEBUG("Previous write completed");
751 }
752
753 /* Set timeout. */
27a58c05
ML		 754 if (port->timeouts.WriteTotalTimeoutConstant != timeout_ms) {
755 port->timeouts.WriteTotalTimeoutConstant = timeout_ms;
756 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
757 RETURN_FAIL("SetCommTimeouts() failed");
758 }
e3dcf906
ML		 759
760 /* Start write. */
bbe566fe 761 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl)) {
e3dcf906 762 DEBUG("Write completed immediately");
9caa2e86 763 RETURN_INT(count);
bbe566fe
ML		 764 } else if (GetLastError() == ERROR_IO_PENDING) {
765 DEBUG("Waiting for write to complete");
27911925
ML		 766 if (GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE) == 0)
767 RETURN_FAIL("GetOverlappedResult() failed");
bbe566fe
ML		 768 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
769 RETURN_INT(bytes_written);
770 } else {
771 RETURN_FAIL("WriteFile() failed");
e3dcf906
ML		 772 }
773#else
774 size_t bytes_written = 0;
775 unsigned char *ptr = (unsigned char *) buf;
776 struct timeval start, delta, now, end = {0, 0};
76222ee5 777 int started = 0;
e3dcf906
ML		 778 fd_set fds;
779 int result;
780
1b91c6ea 781 if (timeout_ms) {
e3dcf906
ML		 782 /* Get time at start of operation. */
783 gettimeofday(&start, NULL);
784 /* Define duration of timeout. */
1b91c6ea
UH		 785 delta.tv_sec = timeout_ms / 1000;
786 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 787 /* Calculate time at which we should give up. */
788 timeradd(&start, &delta, &end);
789 }
790
772c5861
ML		 791 FD_ZERO(&fds);
792 FD_SET(port->fd, &fds);
793
e3dcf906 794 /* Loop until we have written the requested number of bytes. */
dc422c04 795 while (bytes_written < count) {
76222ee5
ML		 796 /*
797 * Check timeout only if we have run select() at least once,
798 * to avoid any issues if a short timeout is reached before
799 * select() is even run.
800 */
801 if (timeout_ms && started) {
e3dcf906 802 gettimeofday(&now, NULL);
c3cee38c
ML		 803 if (timercmp(&now, &end, >))
804 /* Timeout has expired. */
805 break;
e3dcf906
ML		 806 timersub(&end, &now, &delta);
807 }
1b91c6ea 808 result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
76222ee5 809 started = 1;
63a17c64
ML		 810 if (result < 0) {
811 if (errno == EINTR) {
812 DEBUG("select() call was interrupted, repeating");
813 continue;
814 } else {
815 RETURN_FAIL("select() failed");
816 }
817 } else if (result == 0) {
c3cee38c
ML		 818 /* Timeout has expired. */
819 break;
e3dcf906
ML		 820 }
821
822 /* Do write. */
823 result = write(port->fd, ptr, count - bytes_written);
824
825 if (result < 0) {
826 if (errno == EAGAIN)
827 /* This shouldn't happen because we did a select() first, but handle anyway. */
828 continue;
829 else
830 /* This is an actual failure. */
831 RETURN_FAIL("write() failed");
832 }
833
834 bytes_written += result;
835 ptr += result;
836 }
837
c3cee38c
ML		 838 if (bytes_written < count)
839 DEBUG("Write timed out");
840
9caa2e86 841 RETURN_INT(bytes_written);
e3dcf906
ML		 842#endif
843}
844
970f279a
AJ		 845SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
846 const void *buf, size_t count)
74510d4b 847{
c33efc48
ML		 848 TRACE("%p, %p, %d", port, buf, count);
849
dec10e31 850 CHECK_OPEN_PORT();
74510d4b
ML		 851
852 if (!buf)
c33efc48 853 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 854
7890cef6 855 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 856
a3cb91f5 857 if (count == 0)
9caa2e86 858 RETURN_INT(0);
a3cb91f5 859
74510d4b
ML		 860#ifdef _WIN32
861 DWORD written = 0;
0765af56 862 BYTE *ptr = (BYTE *) buf;
f92f1f0c 863
e3dcf906
ML		 864 /* Check whether previous write is complete. */
865 if (port->writing) {
866 if (HasOverlappedIoCompleted(&port->write_ovl)) {
867 DEBUG("Previous write completed");
868 port->writing = 0;
869 } else {
870 DEBUG("Previous write not complete");
871 /* Can't take a new write until the previous one finishes. */
9caa2e86 872 RETURN_INT(0);
a3cb91f5 873 }
e3dcf906 874 }
a3cb91f5 875
e3dcf906 876 /* Set timeout. */
27a58c05
ML		 877 if (port->timeouts.WriteTotalTimeoutConstant != 0) {
878 port->timeouts.WriteTotalTimeoutConstant = 0;
879 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
880 RETURN_FAIL("SetCommTimeouts() failed");
881 }
e3dcf906 882
dc422c04
UH		 883 /*
884 * Keep writing data until the OS has to actually start an async IO
885 * for it. At that point we know the buffer is full.
886 */
887 while (written < count) {
e3dcf906
ML		 888 /* Copy first byte of user buffer. */
889 port->pending_byte = *ptr++;
890
891 /* Start asynchronous write. */
892 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
893 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 894 if (HasOverlappedIoCompleted(&port->write_ovl)) {
895 DEBUG("Asynchronous write completed immediately");
896 port->writing = 0;
897 written++;
898 continue;
899 } else {
900 DEBUG("Asynchronous write running");
901 port->writing = 1;
9caa2e86 902 RETURN_INT(++written);
64d99621 903 }
a3cb91f5 904 } else {
e3dcf906
ML		 905 /* Actual failure of some kind. */
906 RETURN_FAIL("WriteFile() failed");
a3cb91f5 907 }
e3dcf906 908 } else {
9af8cff3 909 DEBUG("Single byte written immediately");
e3dcf906 910 written++;
a3cb91f5
ML		 911 }
912 }
913
9af8cff3 914 DEBUG("All bytes written immediately");
e3dcf906 915
9caa2e86 916 RETURN_INT(written);
74510d4b
ML		 917#else
918 /* Returns the number of bytes written, or -1 upon failure. */
919 ssize_t written = write(port->fd, buf, count);
f92f1f0c 920
74510d4b 921 if (written < 0)
c33efc48 922 RETURN_FAIL("write() failed");
74510d4b 923 else
9caa2e86 924 RETURN_INT(written);
74510d4b
ML		 925#endif
926}
927
94a314a8
ML		 928#ifdef _WIN32
929/* Restart wait operation if buffer was emptied. */
930static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read)
931{
8ebfaf89
ML		 932 DWORD errors;
933 COMSTAT comstat;
94a314a8 934
21ae5ce1
ML		 935 if (bytes_read == 0)
936 RETURN_OK();
937
8ebfaf89
ML		 938 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
939 RETURN_FAIL("ClearCommError() failed");
94a314a8 940
8ebfaf89 941 if (comstat.cbInQue == 0)
94a314a8
ML		 942 TRY(restart_wait(port));
943
944 RETURN_OK();
945}
946#endif
947
970f279a 948SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
1b91c6ea 949 size_t count, unsigned int timeout_ms)
e3dcf906 950{
1b91c6ea 951 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 952
953 CHECK_OPEN_PORT();
954
955 if (!buf)
956 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
957
1b91c6ea 958 if (timeout_ms)
7890cef6 959 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
1b91c6ea 960 count, port->name, timeout_ms);
e3dcf906 961 else
7890cef6
ML		 962 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
963 count, port->name);
e3dcf906
ML		 964
965 if (count == 0)
9caa2e86 966 RETURN_INT(0);
e3dcf906
ML		 967
968#ifdef _WIN32
969 DWORD bytes_read = 0;
970
971 /* Set timeout. */
27a58c05 972 if (port->timeouts.ReadIntervalTimeout != 0 ||
0188a545 973 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 974 port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
975 port->timeouts.ReadIntervalTimeout = 0;
0188a545 976 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 977 port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
978 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
979 RETURN_FAIL("SetCommTimeouts() failed");
980 }
e3dcf906
ML		 981
982 /* Start read. */
bbe566fe 983 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) {
e3dcf906 984 DEBUG("Read completed immediately");
6f1186aa 985 bytes_read = count;
bbe566fe
ML		 986 } else if (GetLastError() == ERROR_IO_PENDING) {
987 DEBUG("Waiting for read to complete");
27911925
ML		 988 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
989 RETURN_FAIL("GetOverlappedResult() failed");
bbe566fe
ML		 990 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
991 } else {
992 RETURN_FAIL("ReadFile() failed");
6f1186aa
ML		 993 }
994
94a314a8 995 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 996
9caa2e86 997 RETURN_INT(bytes_read);
6f1186aa 998
e3dcf906
ML		 999#else
1000 size_t bytes_read = 0;
1001 unsigned char *ptr = (unsigned char *) buf;
1002 struct timeval start, delta, now, end = {0, 0};
76222ee5 1003 int started = 0;
e3dcf906
ML		 1004 fd_set fds;
1005 int result;
1006
1b91c6ea 1007 if (timeout_ms) {
e3dcf906
ML		 1008 /* Get time at start of operation. */
1009 gettimeofday(&start, NULL);
1010 /* Define duration of timeout. */
1b91c6ea
UH		 1011 delta.tv_sec = timeout_ms / 1000;
1012 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 1013 /* Calculate time at which we should give up. */
1014 timeradd(&start, &delta, &end);
1015 }
1016
772c5861
ML		 1017 FD_ZERO(&fds);
1018 FD_SET(port->fd, &fds);
1019
e3dcf906 1020 /* Loop until we have the requested number of bytes. */
dc422c04 1021 while (bytes_read < count) {
76222ee5
ML		 1022 /*
1023 * Check timeout only if we have run select() at least once,
1024 * to avoid any issues if a short timeout is reached before
1025 * select() is even run.
1026 */
1027 if (timeout_ms && started) {
e3dcf906
ML		 1028 gettimeofday(&now, NULL);
1029 if (timercmp(&now, &end, >))
1030 /* Timeout has expired. */
c3cee38c 1031 break;
e3dcf906
ML		 1032 timersub(&end, &now, &delta);
1033 }
1b91c6ea 1034 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
76222ee5 1035 started = 1;
63a17c64
ML		 1036 if (result < 0) {
1037 if (errno == EINTR) {
1038 DEBUG("select() call was interrupted, repeating");
1039 continue;
1040 } else {
1041 RETURN_FAIL("select() failed");
1042 }
1043 } else if (result == 0) {
c3cee38c
ML		 1044 /* Timeout has expired. */
1045 break;
e3dcf906
ML		 1046 }
1047
1048 /* Do read. */
1049 result = read(port->fd, ptr, count - bytes_read);
1050
1051 if (result < 0) {
1052 if (errno == EAGAIN)
76222ee5
ML		 1053 /*
1054 * This shouldn't happen because we did a
1055 * select() first, but handle anyway.
1056 */
e3dcf906
ML		 1057 continue;
1058 else
1059 /* This is an actual failure. */
1060 RETURN_FAIL("read() failed");
1061 }
1062
1063 bytes_read += result;
1064 ptr += result;
1065 }
1066
c3cee38c
ML		 1067 if (bytes_read < count)
1068 DEBUG("Read timed out");
1069
9caa2e86 1070 RETURN_INT(bytes_read);
e3dcf906
ML		 1071#endif
1072}
1073
970f279a
AJ		 1074SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1075 size_t count)
74510d4b 1076{
c33efc48
ML		 1077 TRACE("%p, %p, %d", port, buf, count);
1078
dec10e31 1079 CHECK_OPEN_PORT();
74510d4b
ML		 1080
1081 if (!buf)
c33efc48 1082 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1083
7890cef6 1084 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1085
74510d4b 1086#ifdef _WIN32
e3dcf906 1087 DWORD bytes_read;
f92f1f0c 1088
e3dcf906 1089 /* Set timeout. */
27a58c05 1090 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
0188a545 1091 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 1092 port->timeouts.ReadTotalTimeoutConstant != 0) {
1093 port->timeouts.ReadIntervalTimeout = MAXDWORD;
0188a545 1094 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 1095 port->timeouts.ReadTotalTimeoutConstant = 0;
1096 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1097 RETURN_FAIL("SetCommTimeouts() failed");
1098 }
e3dcf906
ML		 1099
1100 /* Do read. */
1101 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1102 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1103
1104 /* Get number of bytes read. */
1622ef60
ML		 1105 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1106 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1107
94a314a8 1108 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 1109
9caa2e86 1110 RETURN_INT(bytes_read);
74510d4b
ML		 1111#else
1112 ssize_t bytes_read;
f92f1f0c 1113
74510d4b 1114 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1115 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1116 if (errno == EAGAIN)
1117 /* No bytes available. */
33d5ff47
ML		 1118 bytes_read = 0;
1119 else
1120 /* This is an actual failure. */
1121 RETURN_FAIL("read() failed");
1122 }
9caa2e86 1123 RETURN_INT(bytes_read);
74510d4b
ML		 1124#endif
1125}
1126
970f279a 1127SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1128{
1129 TRACE("%p", port);
1130
1131 CHECK_OPEN_PORT();
1132
7890cef6 1133 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1134
1135#ifdef _WIN32
1136 DWORD errors;
1137 COMSTAT comstat;
1138
1139 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1140 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1141 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1142#else
1143 int bytes_waiting;
1144 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1145 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1146 RETURN_INT(bytes_waiting);
3353c22f
ML		 1147#endif
1148}
1149
970f279a 1150SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1151{
1152 TRACE("%p", port);
1153
1154 CHECK_OPEN_PORT();
1155
7890cef6 1156 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1157
1158#ifdef _WIN32
1159 DWORD errors;
1160 COMSTAT comstat;
1161
1162 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1163 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1164 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1165#else
1166 int bytes_waiting;
1167 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1168 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1169 RETURN_INT(bytes_waiting);
3353c22f
ML		 1170#endif
1171}
1172
970f279a 1173SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1174{
1175 struct sp_event_set *result;
1176
1177 TRACE("%p", result_ptr);
1178
1179 if (!result_ptr)
1180 RETURN_ERROR(SP_ERR_ARG, "Null result");
1181
1182 *result_ptr = NULL;
1183
1184 if (!(result = malloc(sizeof(struct sp_event_set))))
1185 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1186
1187 memset(result, 0, sizeof(struct sp_event_set));
1188
1189 *result_ptr = result;
1190
1191 RETURN_OK();
1192}
1193
1194static enum sp_return add_handle(struct sp_event_set *event_set,
1195 event_handle handle, enum sp_event mask)
1196{
1197 void *new_handles;
1198 enum sp_event *new_masks;
1199
1200 TRACE("%p, %d, %d", event_set, handle, mask);
1201
1202 if (!(new_handles = realloc(event_set->handles,
1203 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1204 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1205
ac323d80
UH		 1206 event_set->handles = new_handles;
1207
6f1186aa 1208 if (!(new_masks = realloc(event_set->masks,
ac323d80 1209 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1210 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1211
6f1186aa
ML		 1212 event_set->masks = new_masks;
1213
1214 ((event_handle *) event_set->handles)[event_set->count] = handle;
1215 event_set->masks[event_set->count] = mask;
1216
1217 event_set->count++;
1218
1219 RETURN_OK();
1220}
1221
970f279a 1222SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1223 const struct sp_port *port, enum sp_event mask)
1224{
1225 TRACE("%p, %p, %d", event_set, port, mask);
1226
1227 if (!event_set)
1228 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1229
1230 if (!port)
1231 RETURN_ERROR(SP_ERR_ARG, "Null port");
1232
1233 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1234 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1235
1236 if (!mask)
1237 RETURN_OK();
1238
1239#ifdef _WIN32
1240 enum sp_event handle_mask;
1241 if ((handle_mask = mask & SP_EVENT_TX_READY))
1242 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1243 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1244 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1245#else
1246 TRY(add_handle(event_set, port->fd, mask));
1247#endif
1248
1249 RETURN_OK();
1250}
1251
970f279a 1252SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1253{
1254 TRACE("%p", event_set);
1255
1256 if (!event_set) {
1257 DEBUG("Null event set");
1258 RETURN();
1259 }
1260
1261 DEBUG("Freeing event set");
1262
1263 if (event_set->handles)
1264 free(event_set->handles);
1265 if (event_set->masks)
1266 free(event_set->masks);
1267
1268 free(event_set);
1269
1270 RETURN();
1271}
1272
970f279a 1273SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1b91c6ea 1274 unsigned int timeout_ms)
6f1186aa 1275{
1b91c6ea 1276 TRACE("%p, %d", event_set, timeout_ms);
6f1186aa
ML		 1277
1278 if (!event_set)
1279 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1280
1281#ifdef _WIN32
1282 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1b91c6ea 1283 timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
6f1186aa
ML		 1284 RETURN_FAIL("WaitForMultipleObjects() failed");
1285
1286 RETURN_OK();
1287#else
1288 struct timeval start, delta, now, end = {0, 0};
76222ee5 1289 int started = 0;
1b91c6ea 1290 int result, timeout_remaining_ms;
6f1186aa
ML		 1291 struct pollfd *pollfds;
1292 unsigned int i;
1293
1294 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1295 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1296
1297 for (i = 0; i < event_set->count; i++) {
1298 pollfds[i].fd = ((int *) event_set->handles)[i];
1299 pollfds[i].events = 0;
1300 pollfds[i].revents = 0;
1301 if (event_set->masks[i] & SP_EVENT_RX_READY)
1302 pollfds[i].events |= POLLIN;
1303 if (event_set->masks[i] & SP_EVENT_TX_READY)
1304 pollfds[i].events |= POLLOUT;
1305 if (event_set->masks[i] & SP_EVENT_ERROR)
1306 pollfds[i].events |= POLLERR;
1307 }
1308
1b91c6ea 1309 if (timeout_ms) {
6f1186aa
ML		 1310 /* Get time at start of operation. */
1311 gettimeofday(&start, NULL);
1312 /* Define duration of timeout. */
1b91c6ea
UH		 1313 delta.tv_sec = timeout_ms / 1000;
1314 delta.tv_usec = (timeout_ms % 1000) * 1000;
6f1186aa
ML		 1315 /* Calculate time at which we should give up. */
1316 timeradd(&start, &delta, &end);
1317 }
1318
1319 /* Loop until an event occurs. */
dc422c04 1320 while (1) {
76222ee5
ML		 1321 /*
1322 * Check timeout only if we have run poll() at least once,
1323 * to avoid any issues if a short timeout is reached before
1324 * poll() is even run.
1325 */
1326 if (timeout_ms && started) {
6f1186aa
ML		 1327 gettimeofday(&now, NULL);
1328 if (timercmp(&now, &end, >)) {
dc422c04 1329 DEBUG("Wait timed out");
6f1186aa
ML		 1330 break;
1331 }
1332 timersub(&end, &now, &delta);
1b91c6ea 1333 timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
6f1186aa
ML		 1334 }
1335
1b91c6ea 1336 result = poll(pollfds, event_set->count, timeout_ms ? timeout_remaining_ms : -1);
76222ee5 1337 started = 1;
6f1186aa
ML		 1338
1339 if (result < 0) {
1340 if (errno == EINTR) {
1341 DEBUG("poll() call was interrupted, repeating");
1342 continue;
1343 } else {
1344 free(pollfds);
1345 RETURN_FAIL("poll() failed");
1346 }
1347 } else if (result == 0) {
1348 DEBUG("poll() timed out");
1349 break;
1350 } else {
1351 DEBUG("poll() completed");
1352 break;
1353 }
1354 }
1355
1356 free(pollfds);
1357 RETURN_OK();
1358#endif
1359}
1360
5cea279a 1361#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1362static enum sp_return get_baudrate(int fd, int *baudrate)
1363{
1364 void *data;
1365
c33efc48
ML		 1366 TRACE("%d, %p", fd, baudrate);
1367
ea667be7
ML		 1368 DEBUG("Getting baud rate");
1369
7a6d2196 1370 if (!(data = malloc(get_termios_size())))
c33efc48 1371 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1372
8d43110a
ML		 1373 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1374 free(data);
dc422c04 1375 RETURN_FAIL("Getting termios failed");
8d43110a 1376 }
7a6d2196
ML		 1377
1378 *baudrate = get_termios_speed(data);
1379
8d43110a
ML		 1380 free(data);
1381
c33efc48 1382 RETURN_OK();
7a6d2196
ML		 1383}
1384
1385static enum sp_return set_baudrate(int fd, int baudrate)
1386{
1387 void *data;
1388
c33efc48
ML		 1389 TRACE("%d, %d", fd, baudrate);
1390
ea667be7
ML		 1391 DEBUG("Getting baud rate");
1392
7a6d2196 1393 if (!(data = malloc(get_termios_size())))
c33efc48 1394 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1395
8d43110a
ML		 1396 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1397 free(data);
dc422c04 1398 RETURN_FAIL("Getting termios failed");
8d43110a 1399 }
7a6d2196 1400
ea667be7
ML		 1401 DEBUG("Setting baud rate");
1402
7a6d2196
ML		 1403 set_termios_speed(data, baudrate);
1404
8d43110a
ML		 1405 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1406 free(data);
dc422c04 1407 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1408 }
1409
1410 free(data);
7a6d2196 1411
c33efc48 1412 RETURN_OK();
7a6d2196 1413}
5cea279a 1414#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1415
1416#ifdef USE_TERMIOX
bd791fe1 1417static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1418{
bd791fe1 1419 void *termx;
40978c2b 1420
bd791fe1 1421 TRACE("%d, %p", fd, data);
c33efc48 1422
ea667be7
ML		 1423 DEBUG("Getting advanced flow control");
1424
bd791fe1 1425 if (!(termx = malloc(get_termiox_size())))
c33efc48 1426 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1427
bd791fe1
ML		 1428 if (ioctl(fd, TCGETX, termx) < 0) {
1429 free(termx);
dc422c04 1430 RETURN_FAIL("Getting termiox failed");
8d43110a 1431 }
40978c2b 1432
bd791fe1
ML		 1433 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1434 &data->dtr_flow, &data->dsr_flow);
40978c2b 1435
bd791fe1 1436 free(termx);
8d43110a 1437
c33efc48 1438 RETURN_OK();
40978c2b
ML		 1439}
1440
bd791fe1 1441static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1442{
bd791fe1 1443 void *termx;
40978c2b 1444
bd791fe1 1445 TRACE("%d, %p", fd, data);
c33efc48 1446
ea667be7
ML		 1447 DEBUG("Getting advanced flow control");
1448
bd791fe1 1449 if (!(termx = malloc(get_termiox_size())))
c33efc48 1450 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1451
bd791fe1
ML		 1452 if (ioctl(fd, TCGETX, termx) < 0) {
1453 free(termx);
dc422c04 1454 RETURN_FAIL("Getting termiox failed");
8d43110a 1455 }
40978c2b 1456
ea667be7
ML		 1457 DEBUG("Setting advanced flow control");
1458
bd791fe1
ML		 1459 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1460 data->dtr_flow, data->dsr_flow);
40978c2b 1461
bd791fe1
ML		 1462 if (ioctl(fd, TCSETX, termx) < 0) {
1463 free(termx);
dc422c04 1464 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1465 }
1466
bd791fe1 1467 free(termx);
40978c2b 1468
c33efc48 1469 RETURN_OK();
40978c2b
ML		 1470}
1471#endif /* USE_TERMIOX */
7a6d2196 1472
eb6ed20f
ML		 1473static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1474 struct sp_port_config *config)
8094e4a0 1475{
da2748bf 1476 unsigned int i;
cbf628c7 1477
c33efc48
ML		 1478 TRACE("%p, %p, %p", port, data, config);
1479
7890cef6 1480 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1481
8094e4a0 1482#ifdef _WIN32
e33ab9aa 1483 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1484 RETURN_FAIL("GetCommState() failed");
8094e4a0 1485
067417af 1486 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1487 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1488 config->baudrate = std_baudrates[i].value;
1489 break;
1490 }
1491 }
1492
1493 if (i == NUM_STD_BAUDRATES)
1494 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1495 config->baudrate = data->dcb.BaudRate;
067417af 1496
e33ab9aa 1497 config->bits = data->dcb.ByteSize;
067417af 1498
e33ab9aa
ML		 1499 if (data->dcb.fParity)
1500 switch (data->dcb.Parity) {
067417af
ML		 1501 case NOPARITY:
1502 config->parity = SP_PARITY_NONE;
1503 break;
e432ce60
ML		 1504 case ODDPARITY:
1505 config->parity = SP_PARITY_ODD;
1506 break;
067417af
ML		 1507 case EVENPARITY:
1508 config->parity = SP_PARITY_EVEN;
1509 break;
e432ce60
ML		 1510 case MARKPARITY:
1511 config->parity = SP_PARITY_MARK;
1512 break;
1513 case SPACEPARITY:
1514 config->parity = SP_PARITY_SPACE;
067417af
ML		 1515 break;
1516 default:
1517 config->parity = -1;
1518 }
1519 else
1520 config->parity = SP_PARITY_NONE;
1521
e33ab9aa 1522 switch (data->dcb.StopBits) {
067417af
ML		 1523 case ONESTOPBIT:
1524 config->stopbits = 1;
1525 break;
1526 case TWOSTOPBITS:
1527 config->stopbits = 2;
1528 break;
1529 default:
1530 config->stopbits = -1;
1531 }
1532
e33ab9aa 1533 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1534 case RTS_CONTROL_DISABLE:
1535 config->rts = SP_RTS_OFF;
1536 break;
1537 case RTS_CONTROL_ENABLE:
1538 config->rts = SP_RTS_ON;
1539 break;
1540 case RTS_CONTROL_HANDSHAKE:
1541 config->rts = SP_RTS_FLOW_CONTROL;
1542 break;
1543 default:
1544 config->rts = -1;
067417af
ML		 1545 }
1546
e33ab9aa 1547 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1548
e33ab9aa 1549 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1550 case DTR_CONTROL_DISABLE:
1551 config->dtr = SP_DTR_OFF;
1552 break;
1553 case DTR_CONTROL_ENABLE:
1554 config->dtr = SP_DTR_ON;
1555 break;
1556 case DTR_CONTROL_HANDSHAKE:
1557 config->dtr = SP_DTR_FLOW_CONTROL;
1558 break;
1559 default:
1560 config->dtr = -1;
067417af
ML		 1561 }
1562
e33ab9aa
ML		 1563 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1564
c6754b45
ML		 1565 if (data->dcb.fInX) {
1566 if (data->dcb.fOutX)
1567 config->xon_xoff = SP_XONXOFF_INOUT;
1568 else
1569 config->xon_xoff = SP_XONXOFF_IN;
1570 } else {
1571 if (data->dcb.fOutX)
1572 config->xon_xoff = SP_XONXOFF_OUT;
1573 else
1574 config->xon_xoff = SP_XONXOFF_DISABLED;
1575 }
1576
e33ab9aa
ML		 1577#else // !_WIN32
1578
1579 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1580 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1581
1582 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1583 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1584
1585#ifdef USE_TERMIOX
bd791fe1 1586 int ret = get_flow(port->fd, data);
68ec29db
ML		 1587
1588 if (ret == SP_ERR_FAIL && errno == EINVAL)
1589 data->termiox_supported = 0;
1590 else if (ret < 0)
c33efc48 1591 RETURN_CODEVAL(ret);
68ec29db
ML		 1592 else
1593 data->termiox_supported = 1;
1594#else
1595 data->termiox_supported = 0;
40978c2b
ML		 1596#endif
1597
067417af 1598 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1599 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1600 config->baudrate = std_baudrates[i].value;
1601 break;
1602 }
1603 }
1604
31b3a8f5
MH		 1605 if (i == NUM_STD_BAUDRATES) {
1606#ifdef __APPLE__
1607 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1608#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1609 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1610#else
067417af 1611 config->baudrate = -1;
31b3a8f5
MH		 1612#endif
1613 }
067417af 1614
e33ab9aa 1615 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1616 case CS8:
1617 config->bits = 8;
1618 break;
1619 case CS7:
1620 config->bits = 7;
1621 break;
1622 case CS6:
1623 config->bits = 6;
1624 break;
1625 case CS5:
1626 config->bits = 5;
1627 break;
1628 default:
1629 config->bits = -1;
1630 }
1631
e33ab9aa 1632 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1633 config->parity = SP_PARITY_NONE;
e33ab9aa 1634 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1635 config->parity = -1;
c3e05092 1636#ifdef CMSPAR
e432ce60
ML		 1637 else if (data->term.c_cflag & CMSPAR)
1638 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1639#endif
067417af 1640 else
e33ab9aa 1641 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1642
e33ab9aa 1643 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1644
e33ab9aa 1645 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1646 config->rts = SP_RTS_FLOW_CONTROL;
1647 config->cts = SP_CTS_FLOW_CONTROL;
1648 } else {
bd791fe1 1649 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1650 config->rts = SP_RTS_FLOW_CONTROL;
1651 else
1652 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1653
bd791fe1 1654 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1655 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1656 }
1657
bd791fe1 1658 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1659 config->dtr = SP_DTR_FLOW_CONTROL;
1660 else
1661 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1662
bd791fe1 1663 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1664 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1665
e29b93a5
ML		 1666 if (data->term.c_iflag & IXOFF) {
1667 if (data->term.c_iflag & IXON)
1668 config->xon_xoff = SP_XONXOFF_INOUT;
1669 else
1670 config->xon_xoff = SP_XONXOFF_IN;
1671 } else {
1672 if (data->term.c_iflag & IXON)
1673 config->xon_xoff = SP_XONXOFF_OUT;
1674 else
1675 config->xon_xoff = SP_XONXOFF_DISABLED;
1676 }
067417af
ML		 1677#endif
1678
c33efc48 1679 RETURN_OK();
067417af
ML		 1680}
1681
7a6d2196 1682static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1683 const struct sp_port_config *config)
18fc2dd1 1684{
e33ab9aa 1685 unsigned int i;
31b3a8f5
MH		 1686#ifdef __APPLE__
1687 BAUD_TYPE baud_nonstd;
1688
1689 baud_nonstd = B0;
1690#endif
5cea279a 1691#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1692 int baud_nonstd = 0;
1693#endif
18fc2dd1 1694
c33efc48
ML		 1695 TRACE("%p, %p, %p", port, data, config);
1696
7890cef6 1697 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1698
e33ab9aa 1699#ifdef _WIN32
eac329d2 1700 if (config->baudrate >= 0) {
e33ab9aa
ML		 1701 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1702 if (config->baudrate == std_baudrates[i].value) {
1703 data->dcb.BaudRate = std_baudrates[i].index;
1704 break;
1705 }
1706 }
18fc2dd1 1707
e33ab9aa
ML		 1708 if (i == NUM_STD_BAUDRATES)
1709 data->dcb.BaudRate = config->baudrate;
1710 }
18fc2dd1 1711
e33ab9aa
ML		 1712 if (config->bits >= 0)
1713 data->dcb.ByteSize = config->bits;
1714
1715 if (config->parity >= 0) {
1716 switch (config->parity) {
e33ab9aa
ML		 1717 case SP_PARITY_NONE:
1718 data->dcb.Parity = NOPARITY;
1719 break;
e432ce60
ML		 1720 case SP_PARITY_ODD:
1721 data->dcb.Parity = ODDPARITY;
1722 break;
e33ab9aa
ML		 1723 case SP_PARITY_EVEN:
1724 data->dcb.Parity = EVENPARITY;
1725 break;
e432ce60
ML		 1726 case SP_PARITY_MARK:
1727 data->dcb.Parity = MARKPARITY;
1728 break;
1729 case SP_PARITY_SPACE:
1730 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1731 break;
1732 default:
c33efc48 1733 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1734 }
18fc2dd1
ML		 1735 }
1736
e33ab9aa
ML		 1737 if (config->stopbits >= 0) {
1738 switch (config->stopbits) {
1739 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1740 case 1:
1741 data->dcb.StopBits = ONESTOPBIT;
1742 break;
1743 case 2:
1744 data->dcb.StopBits = TWOSTOPBITS;
1745 break;
1746 default:
c33efc48 1747 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1748 }
1749 }
1750
1751 if (config->rts >= 0) {
1752 switch (config->rts) {
1753 case SP_RTS_OFF:
1754 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1755 break;
1756 case SP_RTS_ON:
1757 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1758 break;
1759 case SP_RTS_FLOW_CONTROL:
1760 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1761 break;
1762 default:
c33efc48 1763 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1764 }
1765 }
1766
1767 if (config->cts >= 0) {
1768 switch (config->cts) {
1769 case SP_CTS_IGNORE:
1770 data->dcb.fOutxCtsFlow = FALSE;
1771 break;
1772 case SP_CTS_FLOW_CONTROL:
1773 data->dcb.fOutxCtsFlow = TRUE;
1774 break;
1775 default:
c33efc48 1776 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1777 }
1778 }
1779
1780 if (config->dtr >= 0) {
1781 switch (config->dtr) {
1782 case SP_DTR_OFF:
1783 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1784 break;
1785 case SP_DTR_ON:
1786 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1787 break;
1788 case SP_DTR_FLOW_CONTROL:
1789 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1790 break;
1791 default:
c33efc48 1792 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1793 }
1794 }
1795
1796 if (config->dsr >= 0) {
1797 switch (config->dsr) {
1798 case SP_DSR_IGNORE:
1799 data->dcb.fOutxDsrFlow = FALSE;
1800 break;
1801 case SP_DSR_FLOW_CONTROL:
1802 data->dcb.fOutxDsrFlow = TRUE;
1803 break;
1804 default:
c33efc48 1805 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1806 }
18fc2dd1
ML		 1807 }
1808
e33ab9aa
ML		 1809 if (config->xon_xoff >= 0) {
1810 switch (config->xon_xoff) {
1811 case SP_XONXOFF_DISABLED:
1812 data->dcb.fInX = FALSE;
1813 data->dcb.fOutX = FALSE;
1814 break;
1815 case SP_XONXOFF_IN:
1816 data->dcb.fInX = TRUE;
1817 data->dcb.fOutX = FALSE;
1818 break;
1819 case SP_XONXOFF_OUT:
1820 data->dcb.fInX = FALSE;
1821 data->dcb.fOutX = TRUE;
1822 break;
1823 case SP_XONXOFF_INOUT:
1824 data->dcb.fInX = TRUE;
1825 data->dcb.fOutX = TRUE;
1826 break;
1827 default:
c33efc48 1828 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1829 }
1830 }
1831
1832 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1833 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1834
31b3a8f5 1835#else /* !_WIN32 */
e33ab9aa 1836
7a6d2196
ML		 1837 int controlbits;
1838
eac329d2 1839 if (config->baudrate >= 0) {
e33ab9aa
ML		 1840 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1841 if (config->baudrate == std_baudrates[i].value) {
1842 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1843 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1844
1845 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1846 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1847 break;
1848 }
1849 }
1850
31b3a8f5
MH		 1851 /* Non-standard baud rate */
1852 if (i == NUM_STD_BAUDRATES) {
1853#ifdef __APPLE__
24abdb68 1854 /* Set "dummy" baud rate. */
31b3a8f5 1855 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1856 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1857 baud_nonstd = config->baudrate;
5cea279a 1858#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1859 baud_nonstd = 1;
31b3a8f5 1860#else
c33efc48 1861 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1862#endif
1863 }
e33ab9aa
ML		 1864 }
1865
1866 if (config->bits >= 0) {
1867 data->term.c_cflag &= ~CSIZE;
1868 switch (config->bits) {
1869 case 8:
1870 data->term.c_cflag |= CS8;
1871 break;
1872 case 7:
1873 data->term.c_cflag |= CS7;
1874 break;
1875 case 6:
1876 data->term.c_cflag |= CS6;
1877 break;
23922313
UH		 1878 case 5:
1879 data->term.c_cflag |= CS5;
1880 break;
e33ab9aa 1881 default:
c33efc48 1882 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1883 }
1884 }
1885
1886 if (config->parity >= 0) {
1887 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1888 data->term.c_cflag &= ~(PARENB | PARODD);
1889#ifdef CMSPAR
1890 data->term.c_cflag &= ~CMSPAR;
1891#endif
e33ab9aa
ML		 1892 switch (config->parity) {
1893 case SP_PARITY_NONE:
1894 data->term.c_iflag |= IGNPAR;
1895 break;
1896 case SP_PARITY_EVEN:
1897 data->term.c_cflag |= PARENB;
1898 break;
1899 case SP_PARITY_ODD:
1900 data->term.c_cflag |= PARENB | PARODD;
1901 break;
afb518f0 1902#ifdef CMSPAR
e432ce60 1903 case SP_PARITY_MARK:
c3e05092 1904 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1905 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1906 break;
1907 case SP_PARITY_SPACE:
c3e05092 1908 data->term.c_cflag |= PARENB;
c3e05092 1909 data->term.c_cflag |= CMSPAR;
e432ce60 1910 break;
afb518f0
ML		 1911#else
1912 case SP_PARITY_MARK:
1913 case SP_PARITY_SPACE:
1914 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1915#endif
e33ab9aa 1916 default:
c33efc48 1917 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1918 }
1919 }
1920
1921 if (config->stopbits >= 0) {
1922 data->term.c_cflag &= ~CSTOPB;
1923 switch (config->stopbits) {
1924 case 1:
1925 data->term.c_cflag &= ~CSTOPB;
1926 break;
1927 case 2:
1928 data->term.c_cflag |= CSTOPB;
1929 break;
1930 default:
c33efc48 1931 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1932 }
1933 }
1934
eac329d2 1935 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1936 if (data->termiox_supported) {
bd791fe1 1937 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1938 switch (config->rts) {
1939 case SP_RTS_OFF:
1940 case SP_RTS_ON:
1941 controlbits = TIOCM_RTS;
1942 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1943 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1944 break;
1945 case SP_RTS_FLOW_CONTROL:
bd791fe1 1946 data->rts_flow = 1;
68ec29db
ML		 1947 break;
1948 default:
1949 break;
e33ab9aa 1950 }
68ec29db 1951 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1952 data->cts_flow = 1;
e33ab9aa 1953
bd791fe1 1954 if (data->rts_flow && data->cts_flow)
e33ab9aa 1955 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1956 else
1957 data->term.c_iflag &= ~CRTSCTS;
1958 } else {
1959 /* Asymmetric use of RTS/CTS not supported. */
1960 if (data->term.c_iflag & CRTSCTS) {
1961 /* Flow control can only be disabled for both RTS & CTS together. */
1962 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1963 if (config->cts != SP_CTS_IGNORE)
c33efc48 1964 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1965 }
1966 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1967 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1968 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1969 }
e33ab9aa 1970 } else {
68ec29db
ML		 1971 /* Flow control can only be enabled for both RTS & CTS together. */
1972 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1973 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1974 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1975 }
1976
1977 if (config->rts >= 0) {
1978 if (config->rts == SP_RTS_FLOW_CONTROL) {
1979 data->term.c_iflag |= CRTSCTS;
1980 } else {
1981 controlbits = TIOCM_RTS;
1982 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1983 &controlbits) < 0)
c33efc48 1984 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1985 }
e33ab9aa
ML		 1986 }
1987 }
1988 }
1989
eac329d2 1990 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1991 if (data->termiox_supported) {
bd791fe1 1992 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1993 switch (config->dtr) {
1994 case SP_DTR_OFF:
1995 case SP_DTR_ON:
1996 controlbits = TIOCM_DTR;
1997 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1998 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1999 break;
2000 case SP_DTR_FLOW_CONTROL:
bd791fe1 2001 data->dtr_flow = 1;
68ec29db
ML		 2002 break;
2003 default:
2004 break;
2005 }
2006 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 2007 data->dsr_flow = 1;
68ec29db
ML		 2008 } else {
2009 /* DTR/DSR flow control not supported. */
2010 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 2011 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 2012
68ec29db
ML		 2013 if (config->dtr >= 0) {
2014 controlbits = TIOCM_DTR;
2015 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
2016 &controlbits) < 0)
c33efc48 2017 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 2018 }
e33ab9aa
ML		 2019 }
2020 }
2021
2022 if (config->xon_xoff >= 0) {
2023 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
2024 switch (config->xon_xoff) {
2025 case SP_XONXOFF_DISABLED:
2026 break;
2027 case SP_XONXOFF_IN:
2028 data->term.c_iflag |= IXOFF;
2029 break;
2030 case SP_XONXOFF_OUT:
2031 data->term.c_iflag |= IXON | IXANY;
2032 break;
2033 case SP_XONXOFF_INOUT:
2034 data->term.c_iflag |= IXON | IXOFF | IXANY;
2035 break;
2036 default:
c33efc48 2037 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2038 }
2039 }
2040
3f5c06d0 2041 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2042 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2043
2044#ifdef __APPLE__
2045 if (baud_nonstd != B0) {
2046 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2047 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2048 /*
2049 * Set baud rates in data->term to correct, but incompatible
2050 * with tcsetattr() value, same as delivered by tcgetattr().
2051 */
31b3a8f5 2052 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2053 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2054 }
7a6d2196 2055#elif defined(__linux__)
5cea279a 2056#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2057 if (baud_nonstd)
2058 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2059#endif
40978c2b 2060#ifdef USE_TERMIOX
68ec29db 2061 if (data->termiox_supported)
bd791fe1 2062 TRY(set_flow(port->fd, data));
40978c2b 2063#endif
7a6d2196 2064#endif
31b3a8f5
MH		 2065
2066#endif /* !_WIN32 */
e33ab9aa 2067
c33efc48 2068 RETURN_OK();
e33ab9aa
ML		 2069}
2070
970f279a 2071SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2072{
59131d60 2073 struct sp_port_config *config;
9b1502ef 2074
00d8c56d
UH		 2075 TRACE("%p", config_ptr);
2076
9b1502ef
ML		 2077 if (!config_ptr)
2078 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2079
59131d60
ML		 2080 *config_ptr = NULL;
2081
2082 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2083 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2084
59131d60
ML		 2085 config->baudrate = -1;
2086 config->bits = -1;
2087 config->parity = -1;
2088 config->stopbits = -1;
2089 config->rts = -1;
2090 config->cts = -1;
2091 config->dtr = -1;
2092 config->dsr = -1;
2093
2094 *config_ptr = config;
2095
9b1502ef
ML		 2096 RETURN_OK();
2097}
2098
970f279a 2099SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2100{
2101 TRACE("%p", config);
2102
2103 if (!config)
2104 DEBUG("Null config");
2105 else
2106 free(config);
2107
2108 RETURN();
2109}
2110
970f279a
AJ		 2111SP_API enum sp_return sp_get_config(struct sp_port *port,
2112 struct sp_port_config *config)
70cd37de
ML		 2113{
2114 struct port_data data;
2115
2116 TRACE("%p, %p", port, config);
2117
2118 CHECK_OPEN_PORT();
2119
2120 if (!config)
9b1502ef 2121 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2122
2123 TRY(get_config(port, &data, config));
2124
2125 RETURN_OK();
2126}
2127
970f279a
AJ		 2128SP_API enum sp_return sp_set_config(struct sp_port *port,
2129 const struct sp_port_config *config)
e33ab9aa 2130{
8f189c4c 2131 struct port_data data;
e33ab9aa
ML		 2132 struct sp_port_config prev_config;
2133
c33efc48
ML		 2134 TRACE("%p, %p", port, config);
2135
dec10e31 2136 CHECK_OPEN_PORT();
823690ae
ML		 2137
2138 if (!config)
c33efc48 2139 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2140
e33ab9aa
ML		 2141 TRY(get_config(port, &data, &prev_config));
2142 TRY(set_config(port, &data, config));
74510d4b 2143
c33efc48 2144 RETURN_OK();
74510d4b
ML		 2145}
2146
9b1502ef 2147#define CREATE_ACCESSORS(x, type) \
970f279a 2148SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2149 struct port_data data; \
e33ab9aa 2150 struct sp_port_config config; \
c33efc48 2151 TRACE("%p, %d", port, x); \
dec10e31 2152 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2153 TRY(get_config(port, &data, &config)); \
2154 config.x = x; \
2155 TRY(set_config(port, &data, &config)); \
c33efc48 2156 RETURN_OK(); \
9b1502ef 2157} \
970f279a
AJ		 2158SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2159 type *x) { \
00d8c56d 2160 TRACE("%p, %p", config, x); \
6aad5bdd
UH		 2161 if (!x) \
2162 RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \
9b1502ef
ML		 2163 if (!config) \
2164 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2165 *x = config->x; \
2166 RETURN_OK(); \
2167} \
970f279a
AJ		 2168SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2169 type x) { \
9b1502ef
ML		 2170 TRACE("%p, %d", config, x); \
2171 if (!config) \
2172 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2173 config->x = x; \
2174 RETURN_OK(); \
9069c2fb
ML		 2175}
2176
9b1502ef
ML		 2177CREATE_ACCESSORS(baudrate, int)
2178CREATE_ACCESSORS(bits, int)
2179CREATE_ACCESSORS(parity, enum sp_parity)
2180CREATE_ACCESSORS(stopbits, int)
2181CREATE_ACCESSORS(rts, enum sp_rts)
2182CREATE_ACCESSORS(cts, enum sp_cts)
2183CREATE_ACCESSORS(dtr, enum sp_dtr)
2184CREATE_ACCESSORS(dsr, enum sp_dsr)
2185CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2186
970f279a
AJ		 2187SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2188 enum sp_flowcontrol flowcontrol)
e33ab9aa 2189{
9b1502ef
ML		 2190 if (!config)
2191 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2192
2193 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2194 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2195
e33ab9aa 2196 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2197 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2198 else
9b1502ef 2199 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2200
2201 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2202 config->rts = SP_RTS_FLOW_CONTROL;
2203 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2204 } else {
9b1502ef
ML		 2205 if (config->rts == SP_RTS_FLOW_CONTROL)
2206 config->rts = SP_RTS_ON;
2207 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2208 }
2209
2210 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2211 config->dtr = SP_DTR_FLOW_CONTROL;
2212 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2213 } else {
9b1502ef
ML		 2214 if (config->dtr == SP_DTR_FLOW_CONTROL)
2215 config->dtr = SP_DTR_ON;
2216 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2217 }
2218
9b1502ef
ML		 2219 RETURN_OK();
2220}
2221
970f279a
AJ		 2222SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2223 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2224{
2225 struct port_data data;
2226 struct sp_port_config config;
2227
2228 TRACE("%p, %d", port, flowcontrol);
2229
2230 CHECK_OPEN_PORT();
2231
2232 TRY(get_config(port, &data, &config));
2233
2234 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2235
e33ab9aa
ML		 2236 TRY(set_config(port, &data, &config));
2237
c33efc48 2238 RETURN_OK();
e33ab9aa
ML		 2239}
2240
970f279a
AJ		 2241SP_API enum sp_return sp_get_signals(struct sp_port *port,
2242 enum sp_signal *signals)
8cf7c697 2243{
c33efc48
ML		 2244 TRACE("%p, %p", port, signals);
2245
dec10e31 2246 CHECK_OPEN_PORT();
8cf7c697
ML		 2247
2248 if (!signals)
c33efc48 2249 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2250
7890cef6 2251 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2252
8cf7c697
ML		 2253 *signals = 0;
2254#ifdef _WIN32
2255 DWORD bits;
2256 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2257 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2258 if (bits & MS_CTS_ON)
2259 *signals |= SP_SIG_CTS;
2260 if (bits & MS_DSR_ON)
2261 *signals |= SP_SIG_DSR;
8cf7c697 2262 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2263 *signals |= SP_SIG_DCD;
2264 if (bits & MS_RING_ON)
8cf7c697
ML		 2265 *signals |= SP_SIG_RI;
2266#else
2267 int bits;
2268 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2269 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2270 if (bits & TIOCM_CTS)
2271 *signals |= SP_SIG_CTS;
2272 if (bits & TIOCM_DSR)
2273 *signals |= SP_SIG_DSR;
2274 if (bits & TIOCM_CAR)
2275 *signals |= SP_SIG_DCD;
2276 if (bits & TIOCM_RNG)
2277 *signals |= SP_SIG_RI;
2278#endif
c33efc48 2279 RETURN_OK();
8cf7c697
ML		 2280}
2281
970f279a 2282SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2283{
c33efc48
ML		 2284 TRACE("%p", port);
2285
dec10e31 2286 CHECK_OPEN_PORT();
90cc3ee6
ML		 2287#ifdef _WIN32
2288 if (SetCommBreak(port->hdl) == 0)
c33efc48 2289 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2290#else
2291 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2292 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2293#endif
2294
c33efc48 2295 RETURN_OK();
90cc3ee6
ML		 2296}
2297
970f279a 2298SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2299{
c33efc48
ML		 2300 TRACE("%p", port);
2301
dec10e31 2302 CHECK_OPEN_PORT();
90cc3ee6
ML		 2303#ifdef _WIN32
2304 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2305 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2306#else
2307 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2308 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2309#endif
2310
c33efc48 2311 RETURN_OK();
90cc3ee6
ML		 2312}
2313
970f279a 2314SP_API int sp_last_error_code(void)
74510d4b 2315{
7890cef6 2316 TRACE_VOID();
74510d4b 2317#ifdef _WIN32
9caa2e86 2318 RETURN_INT(GetLastError());
74510d4b 2319#else
9caa2e86 2320 RETURN_INT(errno);
74510d4b
ML		 2321#endif
2322}
2323
970f279a 2324SP_API char *sp_last_error_message(void)
74510d4b 2325{
7890cef6 2326 TRACE_VOID();
c33efc48 2327
74510d4b 2328#ifdef _WIN32
9a0c4bbd 2329 TCHAR *message;
74510d4b
ML		 2330 DWORD error = GetLastError();
2331
9a0c4bbd 2332 DWORD length = FormatMessage(
74510d4b
ML		 2333 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2334 FORMAT_MESSAGE_FROM_SYSTEM |
2335 FORMAT_MESSAGE_IGNORE_INSERTS,
2336 NULL,
2337 error,
2338 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2339 (LPTSTR) &message,
2340 0, NULL );
2341
9a0c4bbd
ML		 2342 if (length >= 2 && message[length - 2] == '\r')
2343 message[length - 2] = '\0';
2344
9caa2e86 2345 RETURN_STRING(message);
74510d4b 2346#else
9caa2e86 2347 RETURN_STRING(strerror(errno));
74510d4b
ML		 2348#endif
2349}
2350
970f279a 2351SP_API void sp_free_error_message(char *message)
74510d4b 2352{
c33efc48
ML		 2353 TRACE("%s", message);
2354
74510d4b
ML		 2355#ifdef _WIN32
2356 LocalFree(message);
64eec30d
ML		 2357#else
2358 (void)message;
74510d4b 2359#endif
c33efc48
ML		 2360
2361 RETURN();
74510d4b 2362}
863b35e6 2363
970f279a 2364SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2365{
c33efc48
ML		 2366 TRACE("%p", handler);
2367
863b35e6 2368 sp_debug_handler = handler;
c33efc48
ML		 2369
2370 RETURN();
863b35e6
ML		 2371}
2372
970f279a 2373SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2374{
2375 va_list args;
2376 va_start(args, format);
2377 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2378 fputs("sp: ", stderr);
863b35e6
ML		 2379 vfprintf(stderr, format, args);
2380 }
2381 va_end(args);
2382}
524b0e14 2383
970f279a 2384SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2385{
2386 return SP_PACKAGE_VERSION_MAJOR;
2387}
2388
970f279a 2389SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2390{
2391 return SP_PACKAGE_VERSION_MINOR;
2392}
2393
970f279a 2394SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2395{
2396 return SP_PACKAGE_VERSION_MICRO;
2397}
2398
970f279a 2399SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2400{
2401 return SP_PACKAGE_VERSION_STRING;
2402}
2403
970f279a 2404SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2405{
2406 return SP_LIB_VERSION_CURRENT;
2407}
2408
970f279a 2409SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2410{
2411 return SP_LIB_VERSION_REVISION;
2412}
2413
970f279a 2414SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2415{
2416 return SP_LIB_VERSION_AGE;
2417}
2418
970f279a 2419SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2420{
2421 return SP_LIB_VERSION_STRING;
2422}
2423
2424/** @} */
Serial port access library