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windows: Avoid unnecessary calls to SetCommTimeouts().
[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. */
761 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) {
762 if (GetLastError() == ERROR_IO_PENDING) {
763 DEBUG("Waiting for write to complete");
764 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
7890cef6 765 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
9caa2e86 766 RETURN_INT(bytes_written);
e3dcf906
ML		 767 } else {
768 RETURN_FAIL("WriteFile() failed");
769 }
770 } else {
771 DEBUG("Write completed immediately");
9caa2e86 772 RETURN_INT(count);
e3dcf906
ML		 773 }
774#else
775 size_t bytes_written = 0;
776 unsigned char *ptr = (unsigned char *) buf;
777 struct timeval start, delta, now, end = {0, 0};
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
791 /* Loop until we have written the requested number of bytes. */
dc422c04 792 while (bytes_written < count) {
e3dcf906
ML		 793 /* Wait until space is available. */
794 FD_ZERO(&fds);
795 FD_SET(port->fd, &fds);
1b91c6ea 796 if (timeout_ms) {
e3dcf906
ML		 797 gettimeofday(&now, NULL);
798 if (timercmp(&now, &end, >)) {
dc422c04 799 DEBUG("Write timed out");
9caa2e86 800 RETURN_INT(bytes_written);
e3dcf906
ML		 801 }
802 timersub(&end, &now, &delta);
803 }
1b91c6ea 804 result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
63a17c64
ML		 805 if (result < 0) {
806 if (errno == EINTR) {
807 DEBUG("select() call was interrupted, repeating");
808 continue;
809 } else {
810 RETURN_FAIL("select() failed");
811 }
812 } else if (result == 0) {
dc422c04 813 DEBUG("Write timed out");
9caa2e86 814 RETURN_INT(bytes_written);
e3dcf906
ML		 815 }
816
817 /* Do write. */
818 result = write(port->fd, ptr, count - bytes_written);
819
820 if (result < 0) {
821 if (errno == EAGAIN)
822 /* This shouldn't happen because we did a select() first, but handle anyway. */
823 continue;
824 else
825 /* This is an actual failure. */
826 RETURN_FAIL("write() failed");
827 }
828
829 bytes_written += result;
830 ptr += result;
831 }
832
9caa2e86 833 RETURN_INT(bytes_written);
e3dcf906
ML		 834#endif
835}
836
970f279a
AJ		 837SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
838 const void *buf, size_t count)
74510d4b 839{
c33efc48
ML		 840 TRACE("%p, %p, %d", port, buf, count);
841
dec10e31 842 CHECK_OPEN_PORT();
74510d4b
ML		 843
844 if (!buf)
c33efc48 845 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 846
7890cef6 847 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 848
a3cb91f5 849 if (count == 0)
9caa2e86 850 RETURN_INT(0);
a3cb91f5 851
74510d4b
ML		 852#ifdef _WIN32
853 DWORD written = 0;
0765af56 854 BYTE *ptr = (BYTE *) buf;
f92f1f0c 855
e3dcf906
ML		 856 /* Check whether previous write is complete. */
857 if (port->writing) {
858 if (HasOverlappedIoCompleted(&port->write_ovl)) {
859 DEBUG("Previous write completed");
860 port->writing = 0;
861 } else {
862 DEBUG("Previous write not complete");
863 /* Can't take a new write until the previous one finishes. */
9caa2e86 864 RETURN_INT(0);
a3cb91f5 865 }
e3dcf906 866 }
a3cb91f5 867
e3dcf906 868 /* Set timeout. */
27a58c05
ML		 869 if (port->timeouts.WriteTotalTimeoutConstant != 0) {
870 port->timeouts.WriteTotalTimeoutConstant = 0;
871 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
872 RETURN_FAIL("SetCommTimeouts() failed");
873 }
e3dcf906 874
dc422c04
UH		 875 /*
876 * Keep writing data until the OS has to actually start an async IO
877 * for it. At that point we know the buffer is full.
878 */
879 while (written < count) {
e3dcf906
ML		 880 /* Copy first byte of user buffer. */
881 port->pending_byte = *ptr++;
882
883 /* Start asynchronous write. */
884 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
885 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 886 if (HasOverlappedIoCompleted(&port->write_ovl)) {
887 DEBUG("Asynchronous write completed immediately");
888 port->writing = 0;
889 written++;
890 continue;
891 } else {
892 DEBUG("Asynchronous write running");
893 port->writing = 1;
9caa2e86 894 RETURN_INT(++written);
64d99621 895 }
a3cb91f5 896 } else {
e3dcf906
ML		 897 /* Actual failure of some kind. */
898 RETURN_FAIL("WriteFile() failed");
a3cb91f5 899 }
e3dcf906 900 } else {
9af8cff3 901 DEBUG("Single byte written immediately");
e3dcf906 902 written++;
a3cb91f5
ML		 903 }
904 }
905
9af8cff3 906 DEBUG("All bytes written immediately");
e3dcf906 907
9caa2e86 908 RETURN_INT(written);
74510d4b
ML		 909#else
910 /* Returns the number of bytes written, or -1 upon failure. */
911 ssize_t written = write(port->fd, buf, count);
f92f1f0c 912
74510d4b 913 if (written < 0)
c33efc48 914 RETURN_FAIL("write() failed");
74510d4b 915 else
9caa2e86 916 RETURN_INT(written);
74510d4b
ML		 917#endif
918}
919
970f279a 920SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
1b91c6ea 921 size_t count, unsigned int timeout_ms)
e3dcf906 922{
1b91c6ea 923 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 924
925 CHECK_OPEN_PORT();
926
927 if (!buf)
928 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
929
1b91c6ea 930 if (timeout_ms)
7890cef6 931 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
1b91c6ea 932 count, port->name, timeout_ms);
e3dcf906 933 else
7890cef6
ML		 934 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
935 count, port->name);
e3dcf906
ML		 936
937 if (count == 0)
9caa2e86 938 RETURN_INT(0);
e3dcf906
ML		 939
940#ifdef _WIN32
941 DWORD bytes_read = 0;
47fcf8ec
ML		 942 DWORD bytes_remaining;
943 int ret;
e3dcf906
ML		 944
945 /* Set timeout. */
27a58c05
ML		 946 if (port->timeouts.ReadIntervalTimeout != 0 ||
947 port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
948 port->timeouts.ReadIntervalTimeout = 0;
949 port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
950 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
951 RETURN_FAIL("SetCommTimeouts() failed");
952 }
e3dcf906
ML		 953
954 /* Start read. */
955 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) {
956 if (GetLastError() == ERROR_IO_PENDING) {
957 DEBUG("Waiting for read to complete");
958 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
7890cef6 959 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
e3dcf906
ML		 960 } else {
961 RETURN_FAIL("ReadFile() failed");
962 }
963 } else {
964 DEBUG("Read completed immediately");
6f1186aa
ML		 965 bytes_read = count;
966 }
967
47fcf8ec
ML		 968 ret = sp_input_waiting(port);
969
970 if (ret < 0)
971 RETURN_CODEVAL(ret);
972
973 bytes_remaining = ret;
974
975 /* Restart wait operation if buffer was emptied. */
976 if (bytes_read > 0 && bytes_remaining == 0)
977 TRY(restart_wait(port));
6f1186aa 978
9caa2e86 979 RETURN_INT(bytes_read);
6f1186aa 980
e3dcf906
ML		 981#else
982 size_t bytes_read = 0;
983 unsigned char *ptr = (unsigned char *) buf;
984 struct timeval start, delta, now, end = {0, 0};
985 fd_set fds;
986 int result;
987
1b91c6ea 988 if (timeout_ms) {
e3dcf906
ML		 989 /* Get time at start of operation. */
990 gettimeofday(&start, NULL);
991 /* Define duration of timeout. */
1b91c6ea
UH		 992 delta.tv_sec = timeout_ms / 1000;
993 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 994 /* Calculate time at which we should give up. */
995 timeradd(&start, &delta, &end);
996 }
997
998 /* Loop until we have the requested number of bytes. */
dc422c04 999 while (bytes_read < count) {
e3dcf906
ML		 1000 /* Wait until data is available. */
1001 FD_ZERO(&fds);
1002 FD_SET(port->fd, &fds);
1b91c6ea 1003 if (timeout_ms) {
e3dcf906
ML		 1004 gettimeofday(&now, NULL);
1005 if (timercmp(&now, &end, >))
1006 /* Timeout has expired. */
9caa2e86 1007 RETURN_INT(bytes_read);
e3dcf906
ML		 1008 timersub(&end, &now, &delta);
1009 }
1b91c6ea 1010 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
63a17c64
ML		 1011 if (result < 0) {
1012 if (errno == EINTR) {
1013 DEBUG("select() call was interrupted, repeating");
1014 continue;
1015 } else {
1016 RETURN_FAIL("select() failed");
1017 }
1018 } else if (result == 0) {
dc422c04 1019 DEBUG("Read timed out");
9caa2e86 1020 RETURN_INT(bytes_read);
e3dcf906
ML		 1021 }
1022
1023 /* Do read. */
1024 result = read(port->fd, ptr, count - bytes_read);
1025
1026 if (result < 0) {
1027 if (errno == EAGAIN)
1028 /* This shouldn't happen because we did a select() first, but handle anyway. */
1029 continue;
1030 else
1031 /* This is an actual failure. */
1032 RETURN_FAIL("read() failed");
1033 }
1034
1035 bytes_read += result;
1036 ptr += result;
1037 }
1038
9caa2e86 1039 RETURN_INT(bytes_read);
e3dcf906
ML		 1040#endif
1041}
1042
970f279a
AJ		 1043SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1044 size_t count)
74510d4b 1045{
c33efc48
ML		 1046 TRACE("%p, %p, %d", port, buf, count);
1047
dec10e31 1048 CHECK_OPEN_PORT();
74510d4b
ML		 1049
1050 if (!buf)
c33efc48 1051 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1052
7890cef6 1053 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1054
74510d4b 1055#ifdef _WIN32
e3dcf906 1056 DWORD bytes_read;
47fcf8ec
ML		 1057 DWORD bytes_remaining;
1058 int ret;
f92f1f0c 1059
e3dcf906 1060 /* Set timeout. */
27a58c05
ML		 1061 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
1062 port->timeouts.ReadTotalTimeoutConstant != 0) {
1063 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1064 port->timeouts.ReadTotalTimeoutConstant = 0;
1065 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1066 RETURN_FAIL("SetCommTimeouts() failed");
1067 }
e3dcf906
ML		 1068
1069 /* Do read. */
1070 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1071 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1072
1073 /* Get number of bytes read. */
1622ef60
ML		 1074 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1075 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1076
47fcf8ec
ML		 1077 ret = sp_input_waiting(port);
1078
1079 if (ret < 0)
1080 RETURN_CODEVAL(ret);
1081
1082 bytes_remaining = ret;
1083
1084 /* Restart wait operation if buffer was emptied. */
1085 if (bytes_read > 0 && bytes_remaining == 0)
1086 TRY(restart_wait(port));
6f1186aa 1087
9caa2e86 1088 RETURN_INT(bytes_read);
74510d4b
ML		 1089#else
1090 ssize_t bytes_read;
f92f1f0c 1091
74510d4b 1092 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1093 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1094 if (errno == EAGAIN)
1095 /* No bytes available. */
33d5ff47
ML		 1096 bytes_read = 0;
1097 else
1098 /* This is an actual failure. */
1099 RETURN_FAIL("read() failed");
1100 }
9caa2e86 1101 RETURN_INT(bytes_read);
74510d4b
ML		 1102#endif
1103}
1104
970f279a 1105SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1106{
1107 TRACE("%p", port);
1108
1109 CHECK_OPEN_PORT();
1110
7890cef6 1111 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1112
1113#ifdef _WIN32
1114 DWORD errors;
1115 COMSTAT comstat;
1116
1117 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1118 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1119 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1120#else
1121 int bytes_waiting;
1122 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1123 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1124 RETURN_INT(bytes_waiting);
3353c22f
ML		 1125#endif
1126}
1127
970f279a 1128SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1129{
1130 TRACE("%p", port);
1131
1132 CHECK_OPEN_PORT();
1133
7890cef6 1134 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1135
1136#ifdef _WIN32
1137 DWORD errors;
1138 COMSTAT comstat;
1139
1140 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1141 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1142 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1143#else
1144 int bytes_waiting;
1145 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1146 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1147 RETURN_INT(bytes_waiting);
3353c22f
ML		 1148#endif
1149}
1150
970f279a 1151SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1152{
1153 struct sp_event_set *result;
1154
1155 TRACE("%p", result_ptr);
1156
1157 if (!result_ptr)
1158 RETURN_ERROR(SP_ERR_ARG, "Null result");
1159
1160 *result_ptr = NULL;
1161
1162 if (!(result = malloc(sizeof(struct sp_event_set))))
1163 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1164
1165 memset(result, 0, sizeof(struct sp_event_set));
1166
1167 *result_ptr = result;
1168
1169 RETURN_OK();
1170}
1171
1172static enum sp_return add_handle(struct sp_event_set *event_set,
1173 event_handle handle, enum sp_event mask)
1174{
1175 void *new_handles;
1176 enum sp_event *new_masks;
1177
1178 TRACE("%p, %d, %d", event_set, handle, mask);
1179
1180 if (!(new_handles = realloc(event_set->handles,
1181 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1182 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1183
ac323d80
UH		 1184 event_set->handles = new_handles;
1185
6f1186aa 1186 if (!(new_masks = realloc(event_set->masks,
ac323d80 1187 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1188 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1189
6f1186aa
ML		 1190 event_set->masks = new_masks;
1191
1192 ((event_handle *) event_set->handles)[event_set->count] = handle;
1193 event_set->masks[event_set->count] = mask;
1194
1195 event_set->count++;
1196
1197 RETURN_OK();
1198}
1199
970f279a 1200SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1201 const struct sp_port *port, enum sp_event mask)
1202{
1203 TRACE("%p, %p, %d", event_set, port, mask);
1204
1205 if (!event_set)
1206 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1207
1208 if (!port)
1209 RETURN_ERROR(SP_ERR_ARG, "Null port");
1210
1211 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1212 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1213
1214 if (!mask)
1215 RETURN_OK();
1216
1217#ifdef _WIN32
1218 enum sp_event handle_mask;
1219 if ((handle_mask = mask & SP_EVENT_TX_READY))
1220 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1221 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1222 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1223#else
1224 TRY(add_handle(event_set, port->fd, mask));
1225#endif
1226
1227 RETURN_OK();
1228}
1229
970f279a 1230SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1231{
1232 TRACE("%p", event_set);
1233
1234 if (!event_set) {
1235 DEBUG("Null event set");
1236 RETURN();
1237 }
1238
1239 DEBUG("Freeing event set");
1240
1241 if (event_set->handles)
1242 free(event_set->handles);
1243 if (event_set->masks)
1244 free(event_set->masks);
1245
1246 free(event_set);
1247
1248 RETURN();
1249}
1250
970f279a 1251SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1b91c6ea 1252 unsigned int timeout_ms)
6f1186aa 1253{
1b91c6ea 1254 TRACE("%p, %d", event_set, timeout_ms);
6f1186aa
ML		 1255
1256 if (!event_set)
1257 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1258
1259#ifdef _WIN32
1260 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1b91c6ea 1261 timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
6f1186aa
ML		 1262 RETURN_FAIL("WaitForMultipleObjects() failed");
1263
1264 RETURN_OK();
1265#else
1266 struct timeval start, delta, now, end = {0, 0};
1b91c6ea 1267 int result, timeout_remaining_ms;
6f1186aa
ML		 1268 struct pollfd *pollfds;
1269 unsigned int i;
1270
1271 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1272 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1273
1274 for (i = 0; i < event_set->count; i++) {
1275 pollfds[i].fd = ((int *) event_set->handles)[i];
1276 pollfds[i].events = 0;
1277 pollfds[i].revents = 0;
1278 if (event_set->masks[i] & SP_EVENT_RX_READY)
1279 pollfds[i].events |= POLLIN;
1280 if (event_set->masks[i] & SP_EVENT_TX_READY)
1281 pollfds[i].events |= POLLOUT;
1282 if (event_set->masks[i] & SP_EVENT_ERROR)
1283 pollfds[i].events |= POLLERR;
1284 }
1285
1b91c6ea 1286 if (timeout_ms) {
6f1186aa
ML		 1287 /* Get time at start of operation. */
1288 gettimeofday(&start, NULL);
1289 /* Define duration of timeout. */
1b91c6ea
UH		 1290 delta.tv_sec = timeout_ms / 1000;
1291 delta.tv_usec = (timeout_ms % 1000) * 1000;
6f1186aa
ML		 1292 /* Calculate time at which we should give up. */
1293 timeradd(&start, &delta, &end);
1294 }
1295
1296 /* Loop until an event occurs. */
dc422c04 1297 while (1) {
1b91c6ea 1298 if (timeout_ms) {
6f1186aa
ML		 1299 gettimeofday(&now, NULL);
1300 if (timercmp(&now, &end, >)) {
dc422c04 1301 DEBUG("Wait timed out");
6f1186aa
ML		 1302 break;
1303 }
1304 timersub(&end, &now, &delta);
1b91c6ea 1305 timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
6f1186aa
ML		 1306 }
1307
1b91c6ea 1308 result = poll(pollfds, event_set->count, timeout_ms ? timeout_remaining_ms : -1);
6f1186aa
ML		 1309
1310 if (result < 0) {
1311 if (errno == EINTR) {
1312 DEBUG("poll() call was interrupted, repeating");
1313 continue;
1314 } else {
1315 free(pollfds);
1316 RETURN_FAIL("poll() failed");
1317 }
1318 } else if (result == 0) {
1319 DEBUG("poll() timed out");
1320 break;
1321 } else {
1322 DEBUG("poll() completed");
1323 break;
1324 }
1325 }
1326
1327 free(pollfds);
1328 RETURN_OK();
1329#endif
1330}
1331
5cea279a 1332#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1333static enum sp_return get_baudrate(int fd, int *baudrate)
1334{
1335 void *data;
1336
c33efc48
ML		 1337 TRACE("%d, %p", fd, baudrate);
1338
ea667be7
ML		 1339 DEBUG("Getting baud rate");
1340
7a6d2196 1341 if (!(data = malloc(get_termios_size())))
c33efc48 1342 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1343
8d43110a
ML		 1344 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1345 free(data);
dc422c04 1346 RETURN_FAIL("Getting termios failed");
8d43110a 1347 }
7a6d2196
ML		 1348
1349 *baudrate = get_termios_speed(data);
1350
8d43110a
ML		 1351 free(data);
1352
c33efc48 1353 RETURN_OK();
7a6d2196
ML		 1354}
1355
1356static enum sp_return set_baudrate(int fd, int baudrate)
1357{
1358 void *data;
1359
c33efc48
ML		 1360 TRACE("%d, %d", fd, baudrate);
1361
ea667be7
ML		 1362 DEBUG("Getting baud rate");
1363
7a6d2196 1364 if (!(data = malloc(get_termios_size())))
c33efc48 1365 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1366
8d43110a
ML		 1367 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1368 free(data);
dc422c04 1369 RETURN_FAIL("Getting termios failed");
8d43110a 1370 }
7a6d2196 1371
ea667be7
ML		 1372 DEBUG("Setting baud rate");
1373
7a6d2196
ML		 1374 set_termios_speed(data, baudrate);
1375
8d43110a
ML		 1376 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1377 free(data);
dc422c04 1378 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1379 }
1380
1381 free(data);
7a6d2196 1382
c33efc48 1383 RETURN_OK();
7a6d2196 1384}
5cea279a 1385#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1386
1387#ifdef USE_TERMIOX
bd791fe1 1388static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1389{
bd791fe1 1390 void *termx;
40978c2b 1391
bd791fe1 1392 TRACE("%d, %p", fd, data);
c33efc48 1393
ea667be7
ML		 1394 DEBUG("Getting advanced flow control");
1395
bd791fe1 1396 if (!(termx = malloc(get_termiox_size())))
c33efc48 1397 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1398
bd791fe1
ML		 1399 if (ioctl(fd, TCGETX, termx) < 0) {
1400 free(termx);
dc422c04 1401 RETURN_FAIL("Getting termiox failed");
8d43110a 1402 }
40978c2b 1403
bd791fe1
ML		 1404 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1405 &data->dtr_flow, &data->dsr_flow);
40978c2b 1406
bd791fe1 1407 free(termx);
8d43110a 1408
c33efc48 1409 RETURN_OK();
40978c2b
ML		 1410}
1411
bd791fe1 1412static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1413{
bd791fe1 1414 void *termx;
40978c2b 1415
bd791fe1 1416 TRACE("%d, %p", fd, data);
c33efc48 1417
ea667be7
ML		 1418 DEBUG("Getting advanced flow control");
1419
bd791fe1 1420 if (!(termx = malloc(get_termiox_size())))
c33efc48 1421 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1422
bd791fe1
ML		 1423 if (ioctl(fd, TCGETX, termx) < 0) {
1424 free(termx);
dc422c04 1425 RETURN_FAIL("Getting termiox failed");
8d43110a 1426 }
40978c2b 1427
ea667be7
ML		 1428 DEBUG("Setting advanced flow control");
1429
bd791fe1
ML		 1430 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1431 data->dtr_flow, data->dsr_flow);
40978c2b 1432
bd791fe1
ML		 1433 if (ioctl(fd, TCSETX, termx) < 0) {
1434 free(termx);
dc422c04 1435 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1436 }
1437
bd791fe1 1438 free(termx);
40978c2b 1439
c33efc48 1440 RETURN_OK();
40978c2b
ML		 1441}
1442#endif /* USE_TERMIOX */
7a6d2196 1443
eb6ed20f
ML		 1444static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1445 struct sp_port_config *config)
8094e4a0 1446{
da2748bf 1447 unsigned int i;
cbf628c7 1448
c33efc48
ML		 1449 TRACE("%p, %p, %p", port, data, config);
1450
7890cef6 1451 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1452
8094e4a0 1453#ifdef _WIN32
e33ab9aa 1454 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1455 RETURN_FAIL("GetCommState() failed");
8094e4a0 1456
067417af 1457 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1458 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1459 config->baudrate = std_baudrates[i].value;
1460 break;
1461 }
1462 }
1463
1464 if (i == NUM_STD_BAUDRATES)
1465 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1466 config->baudrate = data->dcb.BaudRate;
067417af 1467
e33ab9aa 1468 config->bits = data->dcb.ByteSize;
067417af 1469
e33ab9aa
ML		 1470 if (data->dcb.fParity)
1471 switch (data->dcb.Parity) {
067417af
ML		 1472 case NOPARITY:
1473 config->parity = SP_PARITY_NONE;
1474 break;
e432ce60
ML		 1475 case ODDPARITY:
1476 config->parity = SP_PARITY_ODD;
1477 break;
067417af
ML		 1478 case EVENPARITY:
1479 config->parity = SP_PARITY_EVEN;
1480 break;
e432ce60
ML		 1481 case MARKPARITY:
1482 config->parity = SP_PARITY_MARK;
1483 break;
1484 case SPACEPARITY:
1485 config->parity = SP_PARITY_SPACE;
067417af
ML		 1486 break;
1487 default:
1488 config->parity = -1;
1489 }
1490 else
1491 config->parity = SP_PARITY_NONE;
1492
e33ab9aa 1493 switch (data->dcb.StopBits) {
067417af
ML		 1494 case ONESTOPBIT:
1495 config->stopbits = 1;
1496 break;
1497 case TWOSTOPBITS:
1498 config->stopbits = 2;
1499 break;
1500 default:
1501 config->stopbits = -1;
1502 }
1503
e33ab9aa 1504 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1505 case RTS_CONTROL_DISABLE:
1506 config->rts = SP_RTS_OFF;
1507 break;
1508 case RTS_CONTROL_ENABLE:
1509 config->rts = SP_RTS_ON;
1510 break;
1511 case RTS_CONTROL_HANDSHAKE:
1512 config->rts = SP_RTS_FLOW_CONTROL;
1513 break;
1514 default:
1515 config->rts = -1;
067417af
ML		 1516 }
1517
e33ab9aa 1518 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1519
e33ab9aa 1520 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1521 case DTR_CONTROL_DISABLE:
1522 config->dtr = SP_DTR_OFF;
1523 break;
1524 case DTR_CONTROL_ENABLE:
1525 config->dtr = SP_DTR_ON;
1526 break;
1527 case DTR_CONTROL_HANDSHAKE:
1528 config->dtr = SP_DTR_FLOW_CONTROL;
1529 break;
1530 default:
1531 config->dtr = -1;
067417af
ML		 1532 }
1533
e33ab9aa
ML		 1534 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1535
c6754b45
ML		 1536 if (data->dcb.fInX) {
1537 if (data->dcb.fOutX)
1538 config->xon_xoff = SP_XONXOFF_INOUT;
1539 else
1540 config->xon_xoff = SP_XONXOFF_IN;
1541 } else {
1542 if (data->dcb.fOutX)
1543 config->xon_xoff = SP_XONXOFF_OUT;
1544 else
1545 config->xon_xoff = SP_XONXOFF_DISABLED;
1546 }
1547
e33ab9aa
ML		 1548#else // !_WIN32
1549
1550 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1551 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1552
1553 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1554 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1555
1556#ifdef USE_TERMIOX
bd791fe1 1557 int ret = get_flow(port->fd, data);
68ec29db
ML		 1558
1559 if (ret == SP_ERR_FAIL && errno == EINVAL)
1560 data->termiox_supported = 0;
1561 else if (ret < 0)
c33efc48 1562 RETURN_CODEVAL(ret);
68ec29db
ML		 1563 else
1564 data->termiox_supported = 1;
1565#else
1566 data->termiox_supported = 0;
40978c2b
ML		 1567#endif
1568
067417af 1569 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1570 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1571 config->baudrate = std_baudrates[i].value;
1572 break;
1573 }
1574 }
1575
31b3a8f5
MH		 1576 if (i == NUM_STD_BAUDRATES) {
1577#ifdef __APPLE__
1578 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1579#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1580 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1581#else
067417af 1582 config->baudrate = -1;
31b3a8f5
MH		 1583#endif
1584 }
067417af 1585
e33ab9aa 1586 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1587 case CS8:
1588 config->bits = 8;
1589 break;
1590 case CS7:
1591 config->bits = 7;
1592 break;
1593 case CS6:
1594 config->bits = 6;
1595 break;
1596 case CS5:
1597 config->bits = 5;
1598 break;
1599 default:
1600 config->bits = -1;
1601 }
1602
e33ab9aa 1603 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1604 config->parity = SP_PARITY_NONE;
e33ab9aa 1605 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1606 config->parity = -1;
c3e05092 1607#ifdef CMSPAR
e432ce60
ML		 1608 else if (data->term.c_cflag & CMSPAR)
1609 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1610#endif
067417af 1611 else
e33ab9aa 1612 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1613
e33ab9aa 1614 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1615
e33ab9aa 1616 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1617 config->rts = SP_RTS_FLOW_CONTROL;
1618 config->cts = SP_CTS_FLOW_CONTROL;
1619 } else {
bd791fe1 1620 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1621 config->rts = SP_RTS_FLOW_CONTROL;
1622 else
1623 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1624
bd791fe1 1625 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1626 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1627 }
1628
bd791fe1 1629 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1630 config->dtr = SP_DTR_FLOW_CONTROL;
1631 else
1632 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1633
bd791fe1 1634 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1635 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1636
e29b93a5
ML		 1637 if (data->term.c_iflag & IXOFF) {
1638 if (data->term.c_iflag & IXON)
1639 config->xon_xoff = SP_XONXOFF_INOUT;
1640 else
1641 config->xon_xoff = SP_XONXOFF_IN;
1642 } else {
1643 if (data->term.c_iflag & IXON)
1644 config->xon_xoff = SP_XONXOFF_OUT;
1645 else
1646 config->xon_xoff = SP_XONXOFF_DISABLED;
1647 }
067417af
ML		 1648#endif
1649
c33efc48 1650 RETURN_OK();
067417af
ML		 1651}
1652
7a6d2196 1653static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1654 const struct sp_port_config *config)
18fc2dd1 1655{
e33ab9aa 1656 unsigned int i;
31b3a8f5
MH		 1657#ifdef __APPLE__
1658 BAUD_TYPE baud_nonstd;
1659
1660 baud_nonstd = B0;
1661#endif
5cea279a 1662#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1663 int baud_nonstd = 0;
1664#endif
18fc2dd1 1665
c33efc48
ML		 1666 TRACE("%p, %p, %p", port, data, config);
1667
7890cef6 1668 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1669
e33ab9aa 1670#ifdef _WIN32
eac329d2 1671 if (config->baudrate >= 0) {
e33ab9aa
ML		 1672 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1673 if (config->baudrate == std_baudrates[i].value) {
1674 data->dcb.BaudRate = std_baudrates[i].index;
1675 break;
1676 }
1677 }
18fc2dd1 1678
e33ab9aa
ML		 1679 if (i == NUM_STD_BAUDRATES)
1680 data->dcb.BaudRate = config->baudrate;
1681 }
18fc2dd1 1682
e33ab9aa
ML		 1683 if (config->bits >= 0)
1684 data->dcb.ByteSize = config->bits;
1685
1686 if (config->parity >= 0) {
1687 switch (config->parity) {
e33ab9aa
ML		 1688 case SP_PARITY_NONE:
1689 data->dcb.Parity = NOPARITY;
1690 break;
e432ce60
ML		 1691 case SP_PARITY_ODD:
1692 data->dcb.Parity = ODDPARITY;
1693 break;
e33ab9aa
ML		 1694 case SP_PARITY_EVEN:
1695 data->dcb.Parity = EVENPARITY;
1696 break;
e432ce60
ML		 1697 case SP_PARITY_MARK:
1698 data->dcb.Parity = MARKPARITY;
1699 break;
1700 case SP_PARITY_SPACE:
1701 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1702 break;
1703 default:
c33efc48 1704 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1705 }
18fc2dd1
ML		 1706 }
1707
e33ab9aa
ML		 1708 if (config->stopbits >= 0) {
1709 switch (config->stopbits) {
1710 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1711 case 1:
1712 data->dcb.StopBits = ONESTOPBIT;
1713 break;
1714 case 2:
1715 data->dcb.StopBits = TWOSTOPBITS;
1716 break;
1717 default:
c33efc48 1718 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1719 }
1720 }
1721
1722 if (config->rts >= 0) {
1723 switch (config->rts) {
1724 case SP_RTS_OFF:
1725 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1726 break;
1727 case SP_RTS_ON:
1728 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1729 break;
1730 case SP_RTS_FLOW_CONTROL:
1731 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1732 break;
1733 default:
c33efc48 1734 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1735 }
1736 }
1737
1738 if (config->cts >= 0) {
1739 switch (config->cts) {
1740 case SP_CTS_IGNORE:
1741 data->dcb.fOutxCtsFlow = FALSE;
1742 break;
1743 case SP_CTS_FLOW_CONTROL:
1744 data->dcb.fOutxCtsFlow = TRUE;
1745 break;
1746 default:
c33efc48 1747 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1748 }
1749 }
1750
1751 if (config->dtr >= 0) {
1752 switch (config->dtr) {
1753 case SP_DTR_OFF:
1754 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1755 break;
1756 case SP_DTR_ON:
1757 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1758 break;
1759 case SP_DTR_FLOW_CONTROL:
1760 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1761 break;
1762 default:
c33efc48 1763 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1764 }
1765 }
1766
1767 if (config->dsr >= 0) {
1768 switch (config->dsr) {
1769 case SP_DSR_IGNORE:
1770 data->dcb.fOutxDsrFlow = FALSE;
1771 break;
1772 case SP_DSR_FLOW_CONTROL:
1773 data->dcb.fOutxDsrFlow = TRUE;
1774 break;
1775 default:
c33efc48 1776 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1777 }
18fc2dd1
ML		 1778 }
1779
e33ab9aa
ML		 1780 if (config->xon_xoff >= 0) {
1781 switch (config->xon_xoff) {
1782 case SP_XONXOFF_DISABLED:
1783 data->dcb.fInX = FALSE;
1784 data->dcb.fOutX = FALSE;
1785 break;
1786 case SP_XONXOFF_IN:
1787 data->dcb.fInX = TRUE;
1788 data->dcb.fOutX = FALSE;
1789 break;
1790 case SP_XONXOFF_OUT:
1791 data->dcb.fInX = FALSE;
1792 data->dcb.fOutX = TRUE;
1793 break;
1794 case SP_XONXOFF_INOUT:
1795 data->dcb.fInX = TRUE;
1796 data->dcb.fOutX = TRUE;
1797 break;
1798 default:
c33efc48 1799 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1800 }
1801 }
1802
1803 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1804 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1805
31b3a8f5 1806#else /* !_WIN32 */
e33ab9aa 1807
7a6d2196
ML		 1808 int controlbits;
1809
eac329d2 1810 if (config->baudrate >= 0) {
e33ab9aa
ML		 1811 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1812 if (config->baudrate == std_baudrates[i].value) {
1813 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1814 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1815
1816 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1817 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1818 break;
1819 }
1820 }
1821
31b3a8f5
MH		 1822 /* Non-standard baud rate */
1823 if (i == NUM_STD_BAUDRATES) {
1824#ifdef __APPLE__
24abdb68 1825 /* Set "dummy" baud rate. */
31b3a8f5 1826 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1827 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1828 baud_nonstd = config->baudrate;
5cea279a 1829#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1830 baud_nonstd = 1;
31b3a8f5 1831#else
c33efc48 1832 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1833#endif
1834 }
e33ab9aa
ML		 1835 }
1836
1837 if (config->bits >= 0) {
1838 data->term.c_cflag &= ~CSIZE;
1839 switch (config->bits) {
1840 case 8:
1841 data->term.c_cflag |= CS8;
1842 break;
1843 case 7:
1844 data->term.c_cflag |= CS7;
1845 break;
1846 case 6:
1847 data->term.c_cflag |= CS6;
1848 break;
23922313
UH		 1849 case 5:
1850 data->term.c_cflag |= CS5;
1851 break;
e33ab9aa 1852 default:
c33efc48 1853 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1854 }
1855 }
1856
1857 if (config->parity >= 0) {
1858 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1859 data->term.c_cflag &= ~(PARENB | PARODD);
1860#ifdef CMSPAR
1861 data->term.c_cflag &= ~CMSPAR;
1862#endif
e33ab9aa
ML		 1863 switch (config->parity) {
1864 case SP_PARITY_NONE:
1865 data->term.c_iflag |= IGNPAR;
1866 break;
1867 case SP_PARITY_EVEN:
1868 data->term.c_cflag |= PARENB;
1869 break;
1870 case SP_PARITY_ODD:
1871 data->term.c_cflag |= PARENB | PARODD;
1872 break;
afb518f0 1873#ifdef CMSPAR
e432ce60 1874 case SP_PARITY_MARK:
c3e05092 1875 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1876 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1877 break;
1878 case SP_PARITY_SPACE:
c3e05092 1879 data->term.c_cflag |= PARENB;
c3e05092 1880 data->term.c_cflag |= CMSPAR;
e432ce60 1881 break;
afb518f0
ML		 1882#else
1883 case SP_PARITY_MARK:
1884 case SP_PARITY_SPACE:
1885 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1886#endif
e33ab9aa 1887 default:
c33efc48 1888 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1889 }
1890 }
1891
1892 if (config->stopbits >= 0) {
1893 data->term.c_cflag &= ~CSTOPB;
1894 switch (config->stopbits) {
1895 case 1:
1896 data->term.c_cflag &= ~CSTOPB;
1897 break;
1898 case 2:
1899 data->term.c_cflag |= CSTOPB;
1900 break;
1901 default:
c33efc48 1902 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1903 }
1904 }
1905
eac329d2 1906 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1907 if (data->termiox_supported) {
bd791fe1 1908 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1909 switch (config->rts) {
1910 case SP_RTS_OFF:
1911 case SP_RTS_ON:
1912 controlbits = TIOCM_RTS;
1913 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1914 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1915 break;
1916 case SP_RTS_FLOW_CONTROL:
bd791fe1 1917 data->rts_flow = 1;
68ec29db
ML		 1918 break;
1919 default:
1920 break;
e33ab9aa 1921 }
68ec29db 1922 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1923 data->cts_flow = 1;
e33ab9aa 1924
bd791fe1 1925 if (data->rts_flow && data->cts_flow)
e33ab9aa 1926 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1927 else
1928 data->term.c_iflag &= ~CRTSCTS;
1929 } else {
1930 /* Asymmetric use of RTS/CTS not supported. */
1931 if (data->term.c_iflag & CRTSCTS) {
1932 /* Flow control can only be disabled for both RTS & CTS together. */
1933 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1934 if (config->cts != SP_CTS_IGNORE)
c33efc48 1935 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1936 }
1937 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1938 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1939 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1940 }
e33ab9aa 1941 } else {
68ec29db
ML		 1942 /* Flow control can only be enabled for both RTS & CTS together. */
1943 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1944 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1945 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1946 }
1947
1948 if (config->rts >= 0) {
1949 if (config->rts == SP_RTS_FLOW_CONTROL) {
1950 data->term.c_iflag |= CRTSCTS;
1951 } else {
1952 controlbits = TIOCM_RTS;
1953 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1954 &controlbits) < 0)
c33efc48 1955 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1956 }
e33ab9aa
ML		 1957 }
1958 }
1959 }
1960
eac329d2 1961 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1962 if (data->termiox_supported) {
bd791fe1 1963 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1964 switch (config->dtr) {
1965 case SP_DTR_OFF:
1966 case SP_DTR_ON:
1967 controlbits = TIOCM_DTR;
1968 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1969 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1970 break;
1971 case SP_DTR_FLOW_CONTROL:
bd791fe1 1972 data->dtr_flow = 1;
68ec29db
ML		 1973 break;
1974 default:
1975 break;
1976 }
1977 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 1978 data->dsr_flow = 1;
68ec29db
ML		 1979 } else {
1980 /* DTR/DSR flow control not supported. */
1981 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 1982 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 1983
68ec29db
ML		 1984 if (config->dtr >= 0) {
1985 controlbits = TIOCM_DTR;
1986 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
1987 &controlbits) < 0)
c33efc48 1988 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 1989 }
e33ab9aa
ML		 1990 }
1991 }
1992
1993 if (config->xon_xoff >= 0) {
1994 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
1995 switch (config->xon_xoff) {
1996 case SP_XONXOFF_DISABLED:
1997 break;
1998 case SP_XONXOFF_IN:
1999 data->term.c_iflag |= IXOFF;
2000 break;
2001 case SP_XONXOFF_OUT:
2002 data->term.c_iflag |= IXON | IXANY;
2003 break;
2004 case SP_XONXOFF_INOUT:
2005 data->term.c_iflag |= IXON | IXOFF | IXANY;
2006 break;
2007 default:
c33efc48 2008 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2009 }
2010 }
2011
3f5c06d0 2012 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2013 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2014
2015#ifdef __APPLE__
2016 if (baud_nonstd != B0) {
2017 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2018 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2019 /*
2020 * Set baud rates in data->term to correct, but incompatible
2021 * with tcsetattr() value, same as delivered by tcgetattr().
2022 */
31b3a8f5 2023 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2024 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2025 }
7a6d2196 2026#elif defined(__linux__)
5cea279a 2027#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2028 if (baud_nonstd)
2029 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2030#endif
40978c2b 2031#ifdef USE_TERMIOX
68ec29db 2032 if (data->termiox_supported)
bd791fe1 2033 TRY(set_flow(port->fd, data));
40978c2b 2034#endif
7a6d2196 2035#endif
31b3a8f5
MH		 2036
2037#endif /* !_WIN32 */
e33ab9aa 2038
c33efc48 2039 RETURN_OK();
e33ab9aa
ML		 2040}
2041
970f279a 2042SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2043{
59131d60 2044 struct sp_port_config *config;
9b1502ef 2045
00d8c56d
UH		 2046 TRACE("%p", config_ptr);
2047
9b1502ef
ML		 2048 if (!config_ptr)
2049 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2050
59131d60
ML		 2051 *config_ptr = NULL;
2052
2053 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2054 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2055
59131d60
ML		 2056 config->baudrate = -1;
2057 config->bits = -1;
2058 config->parity = -1;
2059 config->stopbits = -1;
2060 config->rts = -1;
2061 config->cts = -1;
2062 config->dtr = -1;
2063 config->dsr = -1;
2064
2065 *config_ptr = config;
2066
9b1502ef
ML		 2067 RETURN_OK();
2068}
2069
970f279a 2070SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2071{
2072 TRACE("%p", config);
2073
2074 if (!config)
2075 DEBUG("Null config");
2076 else
2077 free(config);
2078
2079 RETURN();
2080}
2081
970f279a
AJ		 2082SP_API enum sp_return sp_get_config(struct sp_port *port,
2083 struct sp_port_config *config)
70cd37de
ML		 2084{
2085 struct port_data data;
2086
2087 TRACE("%p, %p", port, config);
2088
2089 CHECK_OPEN_PORT();
2090
2091 if (!config)
9b1502ef 2092 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2093
2094 TRY(get_config(port, &data, config));
2095
2096 RETURN_OK();
2097}
2098
970f279a
AJ		 2099SP_API enum sp_return sp_set_config(struct sp_port *port,
2100 const struct sp_port_config *config)
e33ab9aa 2101{
8f189c4c 2102 struct port_data data;
e33ab9aa
ML		 2103 struct sp_port_config prev_config;
2104
c33efc48
ML		 2105 TRACE("%p, %p", port, config);
2106
dec10e31 2107 CHECK_OPEN_PORT();
823690ae
ML		 2108
2109 if (!config)
c33efc48 2110 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2111
e33ab9aa
ML		 2112 TRY(get_config(port, &data, &prev_config));
2113 TRY(set_config(port, &data, config));
74510d4b 2114
c33efc48 2115 RETURN_OK();
74510d4b
ML		 2116}
2117
9b1502ef 2118#define CREATE_ACCESSORS(x, type) \
970f279a 2119SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2120 struct port_data data; \
e33ab9aa 2121 struct sp_port_config config; \
c33efc48 2122 TRACE("%p, %d", port, x); \
dec10e31 2123 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2124 TRY(get_config(port, &data, &config)); \
2125 config.x = x; \
2126 TRY(set_config(port, &data, &config)); \
c33efc48 2127 RETURN_OK(); \
9b1502ef 2128} \
970f279a
AJ		 2129SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2130 type *x) { \
00d8c56d 2131 TRACE("%p, %p", config, x); \
6aad5bdd
UH		 2132 if (!x) \
2133 RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \
9b1502ef
ML		 2134 if (!config) \
2135 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2136 *x = config->x; \
2137 RETURN_OK(); \
2138} \
970f279a
AJ		 2139SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2140 type x) { \
9b1502ef
ML		 2141 TRACE("%p, %d", config, x); \
2142 if (!config) \
2143 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2144 config->x = x; \
2145 RETURN_OK(); \
9069c2fb
ML		 2146}
2147
9b1502ef
ML		 2148CREATE_ACCESSORS(baudrate, int)
2149CREATE_ACCESSORS(bits, int)
2150CREATE_ACCESSORS(parity, enum sp_parity)
2151CREATE_ACCESSORS(stopbits, int)
2152CREATE_ACCESSORS(rts, enum sp_rts)
2153CREATE_ACCESSORS(cts, enum sp_cts)
2154CREATE_ACCESSORS(dtr, enum sp_dtr)
2155CREATE_ACCESSORS(dsr, enum sp_dsr)
2156CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2157
970f279a
AJ		 2158SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2159 enum sp_flowcontrol flowcontrol)
e33ab9aa 2160{
9b1502ef
ML		 2161 if (!config)
2162 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2163
2164 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2165 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2166
e33ab9aa 2167 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2168 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2169 else
9b1502ef 2170 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2171
2172 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2173 config->rts = SP_RTS_FLOW_CONTROL;
2174 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2175 } else {
9b1502ef
ML		 2176 if (config->rts == SP_RTS_FLOW_CONTROL)
2177 config->rts = SP_RTS_ON;
2178 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2179 }
2180
2181 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2182 config->dtr = SP_DTR_FLOW_CONTROL;
2183 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2184 } else {
9b1502ef
ML		 2185 if (config->dtr == SP_DTR_FLOW_CONTROL)
2186 config->dtr = SP_DTR_ON;
2187 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2188 }
2189
9b1502ef
ML		 2190 RETURN_OK();
2191}
2192
970f279a
AJ		 2193SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2194 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2195{
2196 struct port_data data;
2197 struct sp_port_config config;
2198
2199 TRACE("%p, %d", port, flowcontrol);
2200
2201 CHECK_OPEN_PORT();
2202
2203 TRY(get_config(port, &data, &config));
2204
2205 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2206
e33ab9aa
ML		 2207 TRY(set_config(port, &data, &config));
2208
c33efc48 2209 RETURN_OK();
e33ab9aa
ML		 2210}
2211
970f279a
AJ		 2212SP_API enum sp_return sp_get_signals(struct sp_port *port,
2213 enum sp_signal *signals)
8cf7c697 2214{
c33efc48
ML		 2215 TRACE("%p, %p", port, signals);
2216
dec10e31 2217 CHECK_OPEN_PORT();
8cf7c697
ML		 2218
2219 if (!signals)
c33efc48 2220 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2221
7890cef6 2222 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2223
8cf7c697
ML		 2224 *signals = 0;
2225#ifdef _WIN32
2226 DWORD bits;
2227 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2228 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2229 if (bits & MS_CTS_ON)
2230 *signals |= SP_SIG_CTS;
2231 if (bits & MS_DSR_ON)
2232 *signals |= SP_SIG_DSR;
8cf7c697 2233 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2234 *signals |= SP_SIG_DCD;
2235 if (bits & MS_RING_ON)
8cf7c697
ML		 2236 *signals |= SP_SIG_RI;
2237#else
2238 int bits;
2239 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2240 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2241 if (bits & TIOCM_CTS)
2242 *signals |= SP_SIG_CTS;
2243 if (bits & TIOCM_DSR)
2244 *signals |= SP_SIG_DSR;
2245 if (bits & TIOCM_CAR)
2246 *signals |= SP_SIG_DCD;
2247 if (bits & TIOCM_RNG)
2248 *signals |= SP_SIG_RI;
2249#endif
c33efc48 2250 RETURN_OK();
8cf7c697
ML		 2251}
2252
970f279a 2253SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2254{
c33efc48
ML		 2255 TRACE("%p", port);
2256
dec10e31 2257 CHECK_OPEN_PORT();
90cc3ee6
ML		 2258#ifdef _WIN32
2259 if (SetCommBreak(port->hdl) == 0)
c33efc48 2260 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2261#else
2262 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2263 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2264#endif
2265
c33efc48 2266 RETURN_OK();
90cc3ee6
ML		 2267}
2268
970f279a 2269SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2270{
c33efc48
ML		 2271 TRACE("%p", port);
2272
dec10e31 2273 CHECK_OPEN_PORT();
90cc3ee6
ML		 2274#ifdef _WIN32
2275 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2276 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2277#else
2278 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2279 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2280#endif
2281
c33efc48 2282 RETURN_OK();
90cc3ee6
ML		 2283}
2284
970f279a 2285SP_API int sp_last_error_code(void)
74510d4b 2286{
7890cef6 2287 TRACE_VOID();
74510d4b 2288#ifdef _WIN32
9caa2e86 2289 RETURN_INT(GetLastError());
74510d4b 2290#else
9caa2e86 2291 RETURN_INT(errno);
74510d4b
ML		 2292#endif
2293}
2294
970f279a 2295SP_API char *sp_last_error_message(void)
74510d4b 2296{
7890cef6 2297 TRACE_VOID();
c33efc48 2298
74510d4b 2299#ifdef _WIN32
9a0c4bbd 2300 TCHAR *message;
74510d4b
ML		 2301 DWORD error = GetLastError();
2302
9a0c4bbd 2303 DWORD length = FormatMessage(
74510d4b
ML		 2304 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2305 FORMAT_MESSAGE_FROM_SYSTEM |
2306 FORMAT_MESSAGE_IGNORE_INSERTS,
2307 NULL,
2308 error,
2309 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2310 (LPTSTR) &message,
2311 0, NULL );
2312
9a0c4bbd
ML		 2313 if (length >= 2 && message[length - 2] == '\r')
2314 message[length - 2] = '\0';
2315
9caa2e86 2316 RETURN_STRING(message);
74510d4b 2317#else
9caa2e86 2318 RETURN_STRING(strerror(errno));
74510d4b
ML		 2319#endif
2320}
2321
970f279a 2322SP_API void sp_free_error_message(char *message)
74510d4b 2323{
c33efc48
ML		 2324 TRACE("%s", message);
2325
74510d4b
ML		 2326#ifdef _WIN32
2327 LocalFree(message);
64eec30d
ML		 2328#else
2329 (void)message;
74510d4b 2330#endif
c33efc48
ML		 2331
2332 RETURN();
74510d4b 2333}
863b35e6 2334
970f279a 2335SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2336{
c33efc48
ML		 2337 TRACE("%p", handler);
2338
863b35e6 2339 sp_debug_handler = handler;
c33efc48
ML		 2340
2341 RETURN();
863b35e6
ML		 2342}
2343
970f279a 2344SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2345{
2346 va_list args;
2347 va_start(args, format);
2348 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2349 fputs("sp: ", stderr);
863b35e6
ML		 2350 vfprintf(stderr, format, args);
2351 }
2352 va_end(args);
2353}
524b0e14 2354
970f279a 2355SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2356{
2357 return SP_PACKAGE_VERSION_MAJOR;
2358}
2359
970f279a 2360SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2361{
2362 return SP_PACKAGE_VERSION_MINOR;
2363}
2364
970f279a 2365SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2366{
2367 return SP_PACKAGE_VERSION_MICRO;
2368}
2369
970f279a 2370SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2371{
2372 return SP_PACKAGE_VERSION_STRING;
2373}
2374
970f279a 2375SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2376{
2377 return SP_LIB_VERSION_CURRENT;
2378}
2379
970f279a 2380SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2381{
2382 return SP_LIB_VERSION_REVISION;
2383}
2384
970f279a 2385SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2386{
2387 return SP_LIB_VERSION_AGE;
2388}
2389
970f279a 2390SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2391{
2392 return SP_LIB_VERSION_STRING;
2393}
2394
2395/** @} */
Serial port access library