]> 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: Restructure if/else blocks with unnecessary indentation.
[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");
766 GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
767 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
768 RETURN_INT(bytes_written);
769 } else {
770 RETURN_FAIL("WriteFile() failed");
e3dcf906
ML		 771 }
772#else
773 size_t bytes_written = 0;
774 unsigned char *ptr = (unsigned char *) buf;
775 struct timeval start, delta, now, end = {0, 0};
776 fd_set fds;
777 int result;
778
1b91c6ea 779 if (timeout_ms) {
e3dcf906
ML		 780 /* Get time at start of operation. */
781 gettimeofday(&start, NULL);
782 /* Define duration of timeout. */
1b91c6ea
UH		 783 delta.tv_sec = timeout_ms / 1000;
784 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 785 /* Calculate time at which we should give up. */
786 timeradd(&start, &delta, &end);
787 }
788
789 /* Loop until we have written the requested number of bytes. */
dc422c04 790 while (bytes_written < count) {
e3dcf906
ML		 791 /* Wait until space is available. */
792 FD_ZERO(&fds);
793 FD_SET(port->fd, &fds);
1b91c6ea 794 if (timeout_ms) {
e3dcf906
ML		 795 gettimeofday(&now, NULL);
796 if (timercmp(&now, &end, >)) {
dc422c04 797 DEBUG("Write timed out");
9caa2e86 798 RETURN_INT(bytes_written);
e3dcf906
ML		 799 }
800 timersub(&end, &now, &delta);
801 }
1b91c6ea 802 result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
63a17c64
ML		 803 if (result < 0) {
804 if (errno == EINTR) {
805 DEBUG("select() call was interrupted, repeating");
806 continue;
807 } else {
808 RETURN_FAIL("select() failed");
809 }
810 } else if (result == 0) {
dc422c04 811 DEBUG("Write timed out");
9caa2e86 812 RETURN_INT(bytes_written);
e3dcf906
ML		 813 }
814
815 /* Do write. */
816 result = write(port->fd, ptr, count - bytes_written);
817
818 if (result < 0) {
819 if (errno == EAGAIN)
820 /* This shouldn't happen because we did a select() first, but handle anyway. */
821 continue;
822 else
823 /* This is an actual failure. */
824 RETURN_FAIL("write() failed");
825 }
826
827 bytes_written += result;
828 ptr += result;
829 }
830
9caa2e86 831 RETURN_INT(bytes_written);
e3dcf906
ML		 832#endif
833}
834
970f279a
AJ		 835SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
836 const void *buf, size_t count)
74510d4b 837{
c33efc48
ML		 838 TRACE("%p, %p, %d", port, buf, count);
839
dec10e31 840 CHECK_OPEN_PORT();
74510d4b
ML		 841
842 if (!buf)
c33efc48 843 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 844
7890cef6 845 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 846
a3cb91f5 847 if (count == 0)
9caa2e86 848 RETURN_INT(0);
a3cb91f5 849
74510d4b
ML		 850#ifdef _WIN32
851 DWORD written = 0;
0765af56 852 BYTE *ptr = (BYTE *) buf;
f92f1f0c 853
e3dcf906
ML		 854 /* Check whether previous write is complete. */
855 if (port->writing) {
856 if (HasOverlappedIoCompleted(&port->write_ovl)) {
857 DEBUG("Previous write completed");
858 port->writing = 0;
859 } else {
860 DEBUG("Previous write not complete");
861 /* Can't take a new write until the previous one finishes. */
9caa2e86 862 RETURN_INT(0);
a3cb91f5 863 }
e3dcf906 864 }
a3cb91f5 865
e3dcf906 866 /* Set timeout. */
27a58c05
ML		 867 if (port->timeouts.WriteTotalTimeoutConstant != 0) {
868 port->timeouts.WriteTotalTimeoutConstant = 0;
869 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
870 RETURN_FAIL("SetCommTimeouts() failed");
871 }
e3dcf906 872
dc422c04
UH		 873 /*
874 * Keep writing data until the OS has to actually start an async IO
875 * for it. At that point we know the buffer is full.
876 */
877 while (written < count) {
e3dcf906
ML		 878 /* Copy first byte of user buffer. */
879 port->pending_byte = *ptr++;
880
881 /* Start asynchronous write. */
882 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
883 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 884 if (HasOverlappedIoCompleted(&port->write_ovl)) {
885 DEBUG("Asynchronous write completed immediately");
886 port->writing = 0;
887 written++;
888 continue;
889 } else {
890 DEBUG("Asynchronous write running");
891 port->writing = 1;
9caa2e86 892 RETURN_INT(++written);
64d99621 893 }
a3cb91f5 894 } else {
e3dcf906
ML		 895 /* Actual failure of some kind. */
896 RETURN_FAIL("WriteFile() failed");
a3cb91f5 897 }
e3dcf906 898 } else {
9af8cff3 899 DEBUG("Single byte written immediately");
e3dcf906 900 written++;
a3cb91f5
ML		 901 }
902 }
903
9af8cff3 904 DEBUG("All bytes written immediately");
e3dcf906 905
9caa2e86 906 RETURN_INT(written);
74510d4b
ML		 907#else
908 /* Returns the number of bytes written, or -1 upon failure. */
909 ssize_t written = write(port->fd, buf, count);
f92f1f0c 910
74510d4b 911 if (written < 0)
c33efc48 912 RETURN_FAIL("write() failed");
74510d4b 913 else
9caa2e86 914 RETURN_INT(written);
74510d4b
ML		 915#endif
916}
917
94a314a8
ML		 918#ifdef _WIN32
919/* Restart wait operation if buffer was emptied. */
920static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read)
921{
8ebfaf89
ML		 922 DWORD errors;
923 COMSTAT comstat;
94a314a8 924
21ae5ce1
ML		 925 if (bytes_read == 0)
926 RETURN_OK();
927
8ebfaf89
ML		 928 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
929 RETURN_FAIL("ClearCommError() failed");
94a314a8 930
8ebfaf89 931 if (comstat.cbInQue == 0)
94a314a8
ML		 932 TRY(restart_wait(port));
933
934 RETURN_OK();
935}
936#endif
937
970f279a 938SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
1b91c6ea 939 size_t count, unsigned int timeout_ms)
e3dcf906 940{
1b91c6ea 941 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 942
943 CHECK_OPEN_PORT();
944
945 if (!buf)
946 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
947
1b91c6ea 948 if (timeout_ms)
7890cef6 949 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
1b91c6ea 950 count, port->name, timeout_ms);
e3dcf906 951 else
7890cef6
ML		 952 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
953 count, port->name);
e3dcf906
ML		 954
955 if (count == 0)
9caa2e86 956 RETURN_INT(0);
e3dcf906
ML		 957
958#ifdef _WIN32
959 DWORD bytes_read = 0;
960
961 /* Set timeout. */
27a58c05
ML		 962 if (port->timeouts.ReadIntervalTimeout != 0 ||
963 port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
964 port->timeouts.ReadIntervalTimeout = 0;
965 port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
966 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
967 RETURN_FAIL("SetCommTimeouts() failed");
968 }
e3dcf906
ML		 969
970 /* Start read. */
bbe566fe 971 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) {
e3dcf906 972 DEBUG("Read completed immediately");
6f1186aa 973 bytes_read = count;
bbe566fe
ML		 974 } else if (GetLastError() == ERROR_IO_PENDING) {
975 DEBUG("Waiting for read to complete");
976 GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE);
977 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
978 } else {
979 RETURN_FAIL("ReadFile() failed");
6f1186aa
ML		 980 }
981
94a314a8 982 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 983
9caa2e86 984 RETURN_INT(bytes_read);
6f1186aa 985
e3dcf906
ML		 986#else
987 size_t bytes_read = 0;
988 unsigned char *ptr = (unsigned char *) buf;
989 struct timeval start, delta, now, end = {0, 0};
990 fd_set fds;
991 int result;
992
1b91c6ea 993 if (timeout_ms) {
e3dcf906
ML		 994 /* Get time at start of operation. */
995 gettimeofday(&start, NULL);
996 /* Define duration of timeout. */
1b91c6ea
UH		 997 delta.tv_sec = timeout_ms / 1000;
998 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 999 /* Calculate time at which we should give up. */
1000 timeradd(&start, &delta, &end);
1001 }
1002
1003 /* Loop until we have the requested number of bytes. */
dc422c04 1004 while (bytes_read < count) {
e3dcf906
ML		 1005 /* Wait until data is available. */
1006 FD_ZERO(&fds);
1007 FD_SET(port->fd, &fds);
1b91c6ea 1008 if (timeout_ms) {
e3dcf906
ML		 1009 gettimeofday(&now, NULL);
1010 if (timercmp(&now, &end, >))
1011 /* Timeout has expired. */
9caa2e86 1012 RETURN_INT(bytes_read);
e3dcf906
ML		 1013 timersub(&end, &now, &delta);
1014 }
1b91c6ea 1015 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
63a17c64
ML		 1016 if (result < 0) {
1017 if (errno == EINTR) {
1018 DEBUG("select() call was interrupted, repeating");
1019 continue;
1020 } else {
1021 RETURN_FAIL("select() failed");
1022 }
1023 } else if (result == 0) {
dc422c04 1024 DEBUG("Read timed out");
9caa2e86 1025 RETURN_INT(bytes_read);
e3dcf906
ML		 1026 }
1027
1028 /* Do read. */
1029 result = read(port->fd, ptr, count - bytes_read);
1030
1031 if (result < 0) {
1032 if (errno == EAGAIN)
1033 /* This shouldn't happen because we did a select() first, but handle anyway. */
1034 continue;
1035 else
1036 /* This is an actual failure. */
1037 RETURN_FAIL("read() failed");
1038 }
1039
1040 bytes_read += result;
1041 ptr += result;
1042 }
1043
9caa2e86 1044 RETURN_INT(bytes_read);
e3dcf906
ML		 1045#endif
1046}
1047
970f279a
AJ		 1048SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1049 size_t count)
74510d4b 1050{
c33efc48
ML		 1051 TRACE("%p, %p, %d", port, buf, count);
1052
dec10e31 1053 CHECK_OPEN_PORT();
74510d4b
ML		 1054
1055 if (!buf)
c33efc48 1056 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1057
7890cef6 1058 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1059
74510d4b 1060#ifdef _WIN32
e3dcf906 1061 DWORD bytes_read;
f92f1f0c 1062
e3dcf906 1063 /* Set timeout. */
27a58c05
ML		 1064 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
1065 port->timeouts.ReadTotalTimeoutConstant != 0) {
1066 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1067 port->timeouts.ReadTotalTimeoutConstant = 0;
1068 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1069 RETURN_FAIL("SetCommTimeouts() failed");
1070 }
e3dcf906
ML		 1071
1072 /* Do read. */
1073 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1074 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1075
1076 /* Get number of bytes read. */
1622ef60
ML		 1077 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1078 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1079
94a314a8 1080 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 1081
9caa2e86 1082 RETURN_INT(bytes_read);
74510d4b
ML		 1083#else
1084 ssize_t bytes_read;
f92f1f0c 1085
74510d4b 1086 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1087 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1088 if (errno == EAGAIN)
1089 /* No bytes available. */
33d5ff47
ML		 1090 bytes_read = 0;
1091 else
1092 /* This is an actual failure. */
1093 RETURN_FAIL("read() failed");
1094 }
9caa2e86 1095 RETURN_INT(bytes_read);
74510d4b
ML		 1096#endif
1097}
1098
970f279a 1099SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1100{
1101 TRACE("%p", port);
1102
1103 CHECK_OPEN_PORT();
1104
7890cef6 1105 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1106
1107#ifdef _WIN32
1108 DWORD errors;
1109 COMSTAT comstat;
1110
1111 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1112 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1113 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1114#else
1115 int bytes_waiting;
1116 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1117 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1118 RETURN_INT(bytes_waiting);
3353c22f
ML		 1119#endif
1120}
1121
970f279a 1122SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1123{
1124 TRACE("%p", port);
1125
1126 CHECK_OPEN_PORT();
1127
7890cef6 1128 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1129
1130#ifdef _WIN32
1131 DWORD errors;
1132 COMSTAT comstat;
1133
1134 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1135 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1136 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1137#else
1138 int bytes_waiting;
1139 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1140 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1141 RETURN_INT(bytes_waiting);
3353c22f
ML		 1142#endif
1143}
1144
970f279a 1145SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1146{
1147 struct sp_event_set *result;
1148
1149 TRACE("%p", result_ptr);
1150
1151 if (!result_ptr)
1152 RETURN_ERROR(SP_ERR_ARG, "Null result");
1153
1154 *result_ptr = NULL;
1155
1156 if (!(result = malloc(sizeof(struct sp_event_set))))
1157 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1158
1159 memset(result, 0, sizeof(struct sp_event_set));
1160
1161 *result_ptr = result;
1162
1163 RETURN_OK();
1164}
1165
1166static enum sp_return add_handle(struct sp_event_set *event_set,
1167 event_handle handle, enum sp_event mask)
1168{
1169 void *new_handles;
1170 enum sp_event *new_masks;
1171
1172 TRACE("%p, %d, %d", event_set, handle, mask);
1173
1174 if (!(new_handles = realloc(event_set->handles,
1175 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1176 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1177
ac323d80
UH		 1178 event_set->handles = new_handles;
1179
6f1186aa 1180 if (!(new_masks = realloc(event_set->masks,
ac323d80 1181 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1182 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1183
6f1186aa
ML		 1184 event_set->masks = new_masks;
1185
1186 ((event_handle *) event_set->handles)[event_set->count] = handle;
1187 event_set->masks[event_set->count] = mask;
1188
1189 event_set->count++;
1190
1191 RETURN_OK();
1192}
1193
970f279a 1194SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1195 const struct sp_port *port, enum sp_event mask)
1196{
1197 TRACE("%p, %p, %d", event_set, port, mask);
1198
1199 if (!event_set)
1200 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1201
1202 if (!port)
1203 RETURN_ERROR(SP_ERR_ARG, "Null port");
1204
1205 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1206 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1207
1208 if (!mask)
1209 RETURN_OK();
1210
1211#ifdef _WIN32
1212 enum sp_event handle_mask;
1213 if ((handle_mask = mask & SP_EVENT_TX_READY))
1214 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1215 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1216 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1217#else
1218 TRY(add_handle(event_set, port->fd, mask));
1219#endif
1220
1221 RETURN_OK();
1222}
1223
970f279a 1224SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1225{
1226 TRACE("%p", event_set);
1227
1228 if (!event_set) {
1229 DEBUG("Null event set");
1230 RETURN();
1231 }
1232
1233 DEBUG("Freeing event set");
1234
1235 if (event_set->handles)
1236 free(event_set->handles);
1237 if (event_set->masks)
1238 free(event_set->masks);
1239
1240 free(event_set);
1241
1242 RETURN();
1243}
1244
970f279a 1245SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1b91c6ea 1246 unsigned int timeout_ms)
6f1186aa 1247{
1b91c6ea 1248 TRACE("%p, %d", event_set, timeout_ms);
6f1186aa
ML		 1249
1250 if (!event_set)
1251 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1252
1253#ifdef _WIN32
1254 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1b91c6ea 1255 timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
6f1186aa
ML		 1256 RETURN_FAIL("WaitForMultipleObjects() failed");
1257
1258 RETURN_OK();
1259#else
1260 struct timeval start, delta, now, end = {0, 0};
1b91c6ea 1261 int result, timeout_remaining_ms;
6f1186aa
ML		 1262 struct pollfd *pollfds;
1263 unsigned int i;
1264
1265 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1266 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1267
1268 for (i = 0; i < event_set->count; i++) {
1269 pollfds[i].fd = ((int *) event_set->handles)[i];
1270 pollfds[i].events = 0;
1271 pollfds[i].revents = 0;
1272 if (event_set->masks[i] & SP_EVENT_RX_READY)
1273 pollfds[i].events |= POLLIN;
1274 if (event_set->masks[i] & SP_EVENT_TX_READY)
1275 pollfds[i].events |= POLLOUT;
1276 if (event_set->masks[i] & SP_EVENT_ERROR)
1277 pollfds[i].events |= POLLERR;
1278 }
1279
1b91c6ea 1280 if (timeout_ms) {
6f1186aa
ML		 1281 /* Get time at start of operation. */
1282 gettimeofday(&start, NULL);
1283 /* Define duration of timeout. */
1b91c6ea
UH		 1284 delta.tv_sec = timeout_ms / 1000;
1285 delta.tv_usec = (timeout_ms % 1000) * 1000;
6f1186aa
ML		 1286 /* Calculate time at which we should give up. */
1287 timeradd(&start, &delta, &end);
1288 }
1289
1290 /* Loop until an event occurs. */
dc422c04 1291 while (1) {
1b91c6ea 1292 if (timeout_ms) {
6f1186aa
ML		 1293 gettimeofday(&now, NULL);
1294 if (timercmp(&now, &end, >)) {
dc422c04 1295 DEBUG("Wait timed out");
6f1186aa
ML		 1296 break;
1297 }
1298 timersub(&end, &now, &delta);
1b91c6ea 1299 timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
6f1186aa
ML		 1300 }
1301
1b91c6ea 1302 result = poll(pollfds, event_set->count, timeout_ms ? timeout_remaining_ms : -1);
6f1186aa
ML		 1303
1304 if (result < 0) {
1305 if (errno == EINTR) {
1306 DEBUG("poll() call was interrupted, repeating");
1307 continue;
1308 } else {
1309 free(pollfds);
1310 RETURN_FAIL("poll() failed");
1311 }
1312 } else if (result == 0) {
1313 DEBUG("poll() timed out");
1314 break;
1315 } else {
1316 DEBUG("poll() completed");
1317 break;
1318 }
1319 }
1320
1321 free(pollfds);
1322 RETURN_OK();
1323#endif
1324}
1325
5cea279a 1326#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1327static enum sp_return get_baudrate(int fd, int *baudrate)
1328{
1329 void *data;
1330
c33efc48
ML		 1331 TRACE("%d, %p", fd, baudrate);
1332
ea667be7
ML		 1333 DEBUG("Getting baud rate");
1334
7a6d2196 1335 if (!(data = malloc(get_termios_size())))
c33efc48 1336 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1337
8d43110a
ML		 1338 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1339 free(data);
dc422c04 1340 RETURN_FAIL("Getting termios failed");
8d43110a 1341 }
7a6d2196
ML		 1342
1343 *baudrate = get_termios_speed(data);
1344
8d43110a
ML		 1345 free(data);
1346
c33efc48 1347 RETURN_OK();
7a6d2196
ML		 1348}
1349
1350static enum sp_return set_baudrate(int fd, int baudrate)
1351{
1352 void *data;
1353
c33efc48
ML		 1354 TRACE("%d, %d", fd, baudrate);
1355
ea667be7
ML		 1356 DEBUG("Getting baud rate");
1357
7a6d2196 1358 if (!(data = malloc(get_termios_size())))
c33efc48 1359 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1360
8d43110a
ML		 1361 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1362 free(data);
dc422c04 1363 RETURN_FAIL("Getting termios failed");
8d43110a 1364 }
7a6d2196 1365
ea667be7
ML		 1366 DEBUG("Setting baud rate");
1367
7a6d2196
ML		 1368 set_termios_speed(data, baudrate);
1369
8d43110a
ML		 1370 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1371 free(data);
dc422c04 1372 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1373 }
1374
1375 free(data);
7a6d2196 1376
c33efc48 1377 RETURN_OK();
7a6d2196 1378}
5cea279a 1379#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1380
1381#ifdef USE_TERMIOX
bd791fe1 1382static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1383{
bd791fe1 1384 void *termx;
40978c2b 1385
bd791fe1 1386 TRACE("%d, %p", fd, data);
c33efc48 1387
ea667be7
ML		 1388 DEBUG("Getting advanced flow control");
1389
bd791fe1 1390 if (!(termx = malloc(get_termiox_size())))
c33efc48 1391 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1392
bd791fe1
ML		 1393 if (ioctl(fd, TCGETX, termx) < 0) {
1394 free(termx);
dc422c04 1395 RETURN_FAIL("Getting termiox failed");
8d43110a 1396 }
40978c2b 1397
bd791fe1
ML		 1398 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1399 &data->dtr_flow, &data->dsr_flow);
40978c2b 1400
bd791fe1 1401 free(termx);
8d43110a 1402
c33efc48 1403 RETURN_OK();
40978c2b
ML		 1404}
1405
bd791fe1 1406static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1407{
bd791fe1 1408 void *termx;
40978c2b 1409
bd791fe1 1410 TRACE("%d, %p", fd, data);
c33efc48 1411
ea667be7
ML		 1412 DEBUG("Getting advanced flow control");
1413
bd791fe1 1414 if (!(termx = malloc(get_termiox_size())))
c33efc48 1415 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1416
bd791fe1
ML		 1417 if (ioctl(fd, TCGETX, termx) < 0) {
1418 free(termx);
dc422c04 1419 RETURN_FAIL("Getting termiox failed");
8d43110a 1420 }
40978c2b 1421
ea667be7
ML		 1422 DEBUG("Setting advanced flow control");
1423
bd791fe1
ML		 1424 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1425 data->dtr_flow, data->dsr_flow);
40978c2b 1426
bd791fe1
ML		 1427 if (ioctl(fd, TCSETX, termx) < 0) {
1428 free(termx);
dc422c04 1429 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1430 }
1431
bd791fe1 1432 free(termx);
40978c2b 1433
c33efc48 1434 RETURN_OK();
40978c2b
ML		 1435}
1436#endif /* USE_TERMIOX */
7a6d2196 1437
eb6ed20f
ML		 1438static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1439 struct sp_port_config *config)
8094e4a0 1440{
da2748bf 1441 unsigned int i;
cbf628c7 1442
c33efc48
ML		 1443 TRACE("%p, %p, %p", port, data, config);
1444
7890cef6 1445 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1446
8094e4a0 1447#ifdef _WIN32
e33ab9aa 1448 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1449 RETURN_FAIL("GetCommState() failed");
8094e4a0 1450
067417af 1451 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1452 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1453 config->baudrate = std_baudrates[i].value;
1454 break;
1455 }
1456 }
1457
1458 if (i == NUM_STD_BAUDRATES)
1459 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1460 config->baudrate = data->dcb.BaudRate;
067417af 1461
e33ab9aa 1462 config->bits = data->dcb.ByteSize;
067417af 1463
e33ab9aa
ML		 1464 if (data->dcb.fParity)
1465 switch (data->dcb.Parity) {
067417af
ML		 1466 case NOPARITY:
1467 config->parity = SP_PARITY_NONE;
1468 break;
e432ce60
ML		 1469 case ODDPARITY:
1470 config->parity = SP_PARITY_ODD;
1471 break;
067417af
ML		 1472 case EVENPARITY:
1473 config->parity = SP_PARITY_EVEN;
1474 break;
e432ce60
ML		 1475 case MARKPARITY:
1476 config->parity = SP_PARITY_MARK;
1477 break;
1478 case SPACEPARITY:
1479 config->parity = SP_PARITY_SPACE;
067417af
ML		 1480 break;
1481 default:
1482 config->parity = -1;
1483 }
1484 else
1485 config->parity = SP_PARITY_NONE;
1486
e33ab9aa 1487 switch (data->dcb.StopBits) {
067417af
ML		 1488 case ONESTOPBIT:
1489 config->stopbits = 1;
1490 break;
1491 case TWOSTOPBITS:
1492 config->stopbits = 2;
1493 break;
1494 default:
1495 config->stopbits = -1;
1496 }
1497
e33ab9aa 1498 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1499 case RTS_CONTROL_DISABLE:
1500 config->rts = SP_RTS_OFF;
1501 break;
1502 case RTS_CONTROL_ENABLE:
1503 config->rts = SP_RTS_ON;
1504 break;
1505 case RTS_CONTROL_HANDSHAKE:
1506 config->rts = SP_RTS_FLOW_CONTROL;
1507 break;
1508 default:
1509 config->rts = -1;
067417af
ML		 1510 }
1511
e33ab9aa 1512 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1513
e33ab9aa 1514 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1515 case DTR_CONTROL_DISABLE:
1516 config->dtr = SP_DTR_OFF;
1517 break;
1518 case DTR_CONTROL_ENABLE:
1519 config->dtr = SP_DTR_ON;
1520 break;
1521 case DTR_CONTROL_HANDSHAKE:
1522 config->dtr = SP_DTR_FLOW_CONTROL;
1523 break;
1524 default:
1525 config->dtr = -1;
067417af
ML		 1526 }
1527
e33ab9aa
ML		 1528 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1529
c6754b45
ML		 1530 if (data->dcb.fInX) {
1531 if (data->dcb.fOutX)
1532 config->xon_xoff = SP_XONXOFF_INOUT;
1533 else
1534 config->xon_xoff = SP_XONXOFF_IN;
1535 } else {
1536 if (data->dcb.fOutX)
1537 config->xon_xoff = SP_XONXOFF_OUT;
1538 else
1539 config->xon_xoff = SP_XONXOFF_DISABLED;
1540 }
1541
e33ab9aa
ML		 1542#else // !_WIN32
1543
1544 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1545 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1546
1547 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1548 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1549
1550#ifdef USE_TERMIOX
bd791fe1 1551 int ret = get_flow(port->fd, data);
68ec29db
ML		 1552
1553 if (ret == SP_ERR_FAIL && errno == EINVAL)
1554 data->termiox_supported = 0;
1555 else if (ret < 0)
c33efc48 1556 RETURN_CODEVAL(ret);
68ec29db
ML		 1557 else
1558 data->termiox_supported = 1;
1559#else
1560 data->termiox_supported = 0;
40978c2b
ML		 1561#endif
1562
067417af 1563 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1564 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1565 config->baudrate = std_baudrates[i].value;
1566 break;
1567 }
1568 }
1569
31b3a8f5
MH		 1570 if (i == NUM_STD_BAUDRATES) {
1571#ifdef __APPLE__
1572 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1573#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1574 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1575#else
067417af 1576 config->baudrate = -1;
31b3a8f5
MH		 1577#endif
1578 }
067417af 1579
e33ab9aa 1580 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1581 case CS8:
1582 config->bits = 8;
1583 break;
1584 case CS7:
1585 config->bits = 7;
1586 break;
1587 case CS6:
1588 config->bits = 6;
1589 break;
1590 case CS5:
1591 config->bits = 5;
1592 break;
1593 default:
1594 config->bits = -1;
1595 }
1596
e33ab9aa 1597 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1598 config->parity = SP_PARITY_NONE;
e33ab9aa 1599 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1600 config->parity = -1;
c3e05092 1601#ifdef CMSPAR
e432ce60
ML		 1602 else if (data->term.c_cflag & CMSPAR)
1603 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1604#endif
067417af 1605 else
e33ab9aa 1606 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1607
e33ab9aa 1608 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1609
e33ab9aa 1610 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1611 config->rts = SP_RTS_FLOW_CONTROL;
1612 config->cts = SP_CTS_FLOW_CONTROL;
1613 } else {
bd791fe1 1614 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1615 config->rts = SP_RTS_FLOW_CONTROL;
1616 else
1617 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1618
bd791fe1 1619 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1620 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1621 }
1622
bd791fe1 1623 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1624 config->dtr = SP_DTR_FLOW_CONTROL;
1625 else
1626 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1627
bd791fe1 1628 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1629 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1630
e29b93a5
ML		 1631 if (data->term.c_iflag & IXOFF) {
1632 if (data->term.c_iflag & IXON)
1633 config->xon_xoff = SP_XONXOFF_INOUT;
1634 else
1635 config->xon_xoff = SP_XONXOFF_IN;
1636 } else {
1637 if (data->term.c_iflag & IXON)
1638 config->xon_xoff = SP_XONXOFF_OUT;
1639 else
1640 config->xon_xoff = SP_XONXOFF_DISABLED;
1641 }
067417af
ML		 1642#endif
1643
c33efc48 1644 RETURN_OK();
067417af
ML		 1645}
1646
7a6d2196 1647static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1648 const struct sp_port_config *config)
18fc2dd1 1649{
e33ab9aa 1650 unsigned int i;
31b3a8f5
MH		 1651#ifdef __APPLE__
1652 BAUD_TYPE baud_nonstd;
1653
1654 baud_nonstd = B0;
1655#endif
5cea279a 1656#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1657 int baud_nonstd = 0;
1658#endif
18fc2dd1 1659
c33efc48
ML		 1660 TRACE("%p, %p, %p", port, data, config);
1661
7890cef6 1662 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1663
e33ab9aa 1664#ifdef _WIN32
eac329d2 1665 if (config->baudrate >= 0) {
e33ab9aa
ML		 1666 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1667 if (config->baudrate == std_baudrates[i].value) {
1668 data->dcb.BaudRate = std_baudrates[i].index;
1669 break;
1670 }
1671 }
18fc2dd1 1672
e33ab9aa
ML		 1673 if (i == NUM_STD_BAUDRATES)
1674 data->dcb.BaudRate = config->baudrate;
1675 }
18fc2dd1 1676
e33ab9aa
ML		 1677 if (config->bits >= 0)
1678 data->dcb.ByteSize = config->bits;
1679
1680 if (config->parity >= 0) {
1681 switch (config->parity) {
e33ab9aa
ML		 1682 case SP_PARITY_NONE:
1683 data->dcb.Parity = NOPARITY;
1684 break;
e432ce60
ML		 1685 case SP_PARITY_ODD:
1686 data->dcb.Parity = ODDPARITY;
1687 break;
e33ab9aa
ML		 1688 case SP_PARITY_EVEN:
1689 data->dcb.Parity = EVENPARITY;
1690 break;
e432ce60
ML		 1691 case SP_PARITY_MARK:
1692 data->dcb.Parity = MARKPARITY;
1693 break;
1694 case SP_PARITY_SPACE:
1695 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1696 break;
1697 default:
c33efc48 1698 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1699 }
18fc2dd1
ML		 1700 }
1701
e33ab9aa
ML		 1702 if (config->stopbits >= 0) {
1703 switch (config->stopbits) {
1704 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1705 case 1:
1706 data->dcb.StopBits = ONESTOPBIT;
1707 break;
1708 case 2:
1709 data->dcb.StopBits = TWOSTOPBITS;
1710 break;
1711 default:
c33efc48 1712 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1713 }
1714 }
1715
1716 if (config->rts >= 0) {
1717 switch (config->rts) {
1718 case SP_RTS_OFF:
1719 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1720 break;
1721 case SP_RTS_ON:
1722 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1723 break;
1724 case SP_RTS_FLOW_CONTROL:
1725 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1726 break;
1727 default:
c33efc48 1728 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1729 }
1730 }
1731
1732 if (config->cts >= 0) {
1733 switch (config->cts) {
1734 case SP_CTS_IGNORE:
1735 data->dcb.fOutxCtsFlow = FALSE;
1736 break;
1737 case SP_CTS_FLOW_CONTROL:
1738 data->dcb.fOutxCtsFlow = TRUE;
1739 break;
1740 default:
c33efc48 1741 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1742 }
1743 }
1744
1745 if (config->dtr >= 0) {
1746 switch (config->dtr) {
1747 case SP_DTR_OFF:
1748 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1749 break;
1750 case SP_DTR_ON:
1751 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1752 break;
1753 case SP_DTR_FLOW_CONTROL:
1754 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1755 break;
1756 default:
c33efc48 1757 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1758 }
1759 }
1760
1761 if (config->dsr >= 0) {
1762 switch (config->dsr) {
1763 case SP_DSR_IGNORE:
1764 data->dcb.fOutxDsrFlow = FALSE;
1765 break;
1766 case SP_DSR_FLOW_CONTROL:
1767 data->dcb.fOutxDsrFlow = TRUE;
1768 break;
1769 default:
c33efc48 1770 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1771 }
18fc2dd1
ML		 1772 }
1773
e33ab9aa
ML		 1774 if (config->xon_xoff >= 0) {
1775 switch (config->xon_xoff) {
1776 case SP_XONXOFF_DISABLED:
1777 data->dcb.fInX = FALSE;
1778 data->dcb.fOutX = FALSE;
1779 break;
1780 case SP_XONXOFF_IN:
1781 data->dcb.fInX = TRUE;
1782 data->dcb.fOutX = FALSE;
1783 break;
1784 case SP_XONXOFF_OUT:
1785 data->dcb.fInX = FALSE;
1786 data->dcb.fOutX = TRUE;
1787 break;
1788 case SP_XONXOFF_INOUT:
1789 data->dcb.fInX = TRUE;
1790 data->dcb.fOutX = TRUE;
1791 break;
1792 default:
c33efc48 1793 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1794 }
1795 }
1796
1797 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1798 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1799
31b3a8f5 1800#else /* !_WIN32 */
e33ab9aa 1801
7a6d2196
ML		 1802 int controlbits;
1803
eac329d2 1804 if (config->baudrate >= 0) {
e33ab9aa
ML		 1805 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1806 if (config->baudrate == std_baudrates[i].value) {
1807 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1808 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1809
1810 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1811 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1812 break;
1813 }
1814 }
1815
31b3a8f5
MH		 1816 /* Non-standard baud rate */
1817 if (i == NUM_STD_BAUDRATES) {
1818#ifdef __APPLE__
24abdb68 1819 /* Set "dummy" baud rate. */
31b3a8f5 1820 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1821 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1822 baud_nonstd = config->baudrate;
5cea279a 1823#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1824 baud_nonstd = 1;
31b3a8f5 1825#else
c33efc48 1826 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 1827#endif
1828 }
e33ab9aa
ML		 1829 }
1830
1831 if (config->bits >= 0) {
1832 data->term.c_cflag &= ~CSIZE;
1833 switch (config->bits) {
1834 case 8:
1835 data->term.c_cflag |= CS8;
1836 break;
1837 case 7:
1838 data->term.c_cflag |= CS7;
1839 break;
1840 case 6:
1841 data->term.c_cflag |= CS6;
1842 break;
23922313
UH		 1843 case 5:
1844 data->term.c_cflag |= CS5;
1845 break;
e33ab9aa 1846 default:
c33efc48 1847 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 1848 }
1849 }
1850
1851 if (config->parity >= 0) {
1852 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 1853 data->term.c_cflag &= ~(PARENB | PARODD);
1854#ifdef CMSPAR
1855 data->term.c_cflag &= ~CMSPAR;
1856#endif
e33ab9aa
ML		 1857 switch (config->parity) {
1858 case SP_PARITY_NONE:
1859 data->term.c_iflag |= IGNPAR;
1860 break;
1861 case SP_PARITY_EVEN:
1862 data->term.c_cflag |= PARENB;
1863 break;
1864 case SP_PARITY_ODD:
1865 data->term.c_cflag |= PARENB | PARODD;
1866 break;
afb518f0 1867#ifdef CMSPAR
e432ce60 1868 case SP_PARITY_MARK:
c3e05092 1869 data->term.c_cflag |= PARENB | PARODD;
c3e05092 1870 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 1871 break;
1872 case SP_PARITY_SPACE:
c3e05092 1873 data->term.c_cflag |= PARENB;
c3e05092 1874 data->term.c_cflag |= CMSPAR;
e432ce60 1875 break;
afb518f0
ML		 1876#else
1877 case SP_PARITY_MARK:
1878 case SP_PARITY_SPACE:
1879 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
1880#endif
e33ab9aa 1881 default:
c33efc48 1882 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 1883 }
1884 }
1885
1886 if (config->stopbits >= 0) {
1887 data->term.c_cflag &= ~CSTOPB;
1888 switch (config->stopbits) {
1889 case 1:
1890 data->term.c_cflag &= ~CSTOPB;
1891 break;
1892 case 2:
1893 data->term.c_cflag |= CSTOPB;
1894 break;
1895 default:
c33efc48 1896 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 1897 }
1898 }
1899
eac329d2 1900 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 1901 if (data->termiox_supported) {
bd791fe1 1902 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 1903 switch (config->rts) {
1904 case SP_RTS_OFF:
1905 case SP_RTS_ON:
1906 controlbits = TIOCM_RTS;
1907 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1908 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 1909 break;
1910 case SP_RTS_FLOW_CONTROL:
bd791fe1 1911 data->rts_flow = 1;
68ec29db
ML		 1912 break;
1913 default:
1914 break;
e33ab9aa 1915 }
68ec29db 1916 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 1917 data->cts_flow = 1;
e33ab9aa 1918
bd791fe1 1919 if (data->rts_flow && data->cts_flow)
e33ab9aa 1920 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 1921 else
1922 data->term.c_iflag &= ~CRTSCTS;
1923 } else {
1924 /* Asymmetric use of RTS/CTS not supported. */
1925 if (data->term.c_iflag & CRTSCTS) {
1926 /* Flow control can only be disabled for both RTS & CTS together. */
1927 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
1928 if (config->cts != SP_CTS_IGNORE)
c33efc48 1929 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 1930 }
1931 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
1932 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 1933 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 1934 }
e33ab9aa 1935 } else {
68ec29db
ML		 1936 /* Flow control can only be enabled for both RTS & CTS together. */
1937 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
1938 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 1939 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 1940 }
1941
1942 if (config->rts >= 0) {
1943 if (config->rts == SP_RTS_FLOW_CONTROL) {
1944 data->term.c_iflag |= CRTSCTS;
1945 } else {
1946 controlbits = TIOCM_RTS;
1947 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
1948 &controlbits) < 0)
c33efc48 1949 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 1950 }
e33ab9aa
ML		 1951 }
1952 }
1953 }
1954
eac329d2 1955 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 1956 if (data->termiox_supported) {
bd791fe1 1957 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 1958 switch (config->dtr) {
1959 case SP_DTR_OFF:
1960 case SP_DTR_ON:
1961 controlbits = TIOCM_DTR;
1962 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 1963 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 1964 break;
1965 case SP_DTR_FLOW_CONTROL:
bd791fe1 1966 data->dtr_flow = 1;
68ec29db
ML		 1967 break;
1968 default:
1969 break;
1970 }
1971 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 1972 data->dsr_flow = 1;
68ec29db
ML		 1973 } else {
1974 /* DTR/DSR flow control not supported. */
1975 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 1976 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 1977
68ec29db
ML		 1978 if (config->dtr >= 0) {
1979 controlbits = TIOCM_DTR;
1980 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
1981 &controlbits) < 0)
c33efc48 1982 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 1983 }
e33ab9aa
ML		 1984 }
1985 }
1986
1987 if (config->xon_xoff >= 0) {
1988 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
1989 switch (config->xon_xoff) {
1990 case SP_XONXOFF_DISABLED:
1991 break;
1992 case SP_XONXOFF_IN:
1993 data->term.c_iflag |= IXOFF;
1994 break;
1995 case SP_XONXOFF_OUT:
1996 data->term.c_iflag |= IXON | IXANY;
1997 break;
1998 case SP_XONXOFF_INOUT:
1999 data->term.c_iflag |= IXON | IXOFF | IXANY;
2000 break;
2001 default:
c33efc48 2002 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2003 }
2004 }
2005
3f5c06d0 2006 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2007 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2008
2009#ifdef __APPLE__
2010 if (baud_nonstd != B0) {
2011 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2012 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2013 /*
2014 * Set baud rates in data->term to correct, but incompatible
2015 * with tcsetattr() value, same as delivered by tcgetattr().
2016 */
31b3a8f5 2017 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2018 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2019 }
7a6d2196 2020#elif defined(__linux__)
5cea279a 2021#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2022 if (baud_nonstd)
2023 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2024#endif
40978c2b 2025#ifdef USE_TERMIOX
68ec29db 2026 if (data->termiox_supported)
bd791fe1 2027 TRY(set_flow(port->fd, data));
40978c2b 2028#endif
7a6d2196 2029#endif
31b3a8f5
MH		 2030
2031#endif /* !_WIN32 */
e33ab9aa 2032
c33efc48 2033 RETURN_OK();
e33ab9aa
ML		 2034}
2035
970f279a 2036SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2037{
59131d60 2038 struct sp_port_config *config;
9b1502ef 2039
00d8c56d
UH		 2040 TRACE("%p", config_ptr);
2041
9b1502ef
ML		 2042 if (!config_ptr)
2043 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2044
59131d60
ML		 2045 *config_ptr = NULL;
2046
2047 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2048 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2049
59131d60
ML		 2050 config->baudrate = -1;
2051 config->bits = -1;
2052 config->parity = -1;
2053 config->stopbits = -1;
2054 config->rts = -1;
2055 config->cts = -1;
2056 config->dtr = -1;
2057 config->dsr = -1;
2058
2059 *config_ptr = config;
2060
9b1502ef
ML		 2061 RETURN_OK();
2062}
2063
970f279a 2064SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2065{
2066 TRACE("%p", config);
2067
2068 if (!config)
2069 DEBUG("Null config");
2070 else
2071 free(config);
2072
2073 RETURN();
2074}
2075
970f279a
AJ		 2076SP_API enum sp_return sp_get_config(struct sp_port *port,
2077 struct sp_port_config *config)
70cd37de
ML		 2078{
2079 struct port_data data;
2080
2081 TRACE("%p, %p", port, config);
2082
2083 CHECK_OPEN_PORT();
2084
2085 if (!config)
9b1502ef 2086 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2087
2088 TRY(get_config(port, &data, config));
2089
2090 RETURN_OK();
2091}
2092
970f279a
AJ		 2093SP_API enum sp_return sp_set_config(struct sp_port *port,
2094 const struct sp_port_config *config)
e33ab9aa 2095{
8f189c4c 2096 struct port_data data;
e33ab9aa
ML		 2097 struct sp_port_config prev_config;
2098
c33efc48
ML		 2099 TRACE("%p, %p", port, config);
2100
dec10e31 2101 CHECK_OPEN_PORT();
823690ae
ML		 2102
2103 if (!config)
c33efc48 2104 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2105
e33ab9aa
ML		 2106 TRY(get_config(port, &data, &prev_config));
2107 TRY(set_config(port, &data, config));
74510d4b 2108
c33efc48 2109 RETURN_OK();
74510d4b
ML		 2110}
2111
9b1502ef 2112#define CREATE_ACCESSORS(x, type) \
970f279a 2113SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2114 struct port_data data; \
e33ab9aa 2115 struct sp_port_config config; \
c33efc48 2116 TRACE("%p, %d", port, x); \
dec10e31 2117 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2118 TRY(get_config(port, &data, &config)); \
2119 config.x = x; \
2120 TRY(set_config(port, &data, &config)); \
c33efc48 2121 RETURN_OK(); \
9b1502ef 2122} \
970f279a
AJ		 2123SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2124 type *x) { \
00d8c56d 2125 TRACE("%p, %p", config, x); \
6aad5bdd
UH		 2126 if (!x) \
2127 RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \
9b1502ef
ML		 2128 if (!config) \
2129 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2130 *x = config->x; \
2131 RETURN_OK(); \
2132} \
970f279a
AJ		 2133SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2134 type x) { \
9b1502ef
ML		 2135 TRACE("%p, %d", config, x); \
2136 if (!config) \
2137 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2138 config->x = x; \
2139 RETURN_OK(); \
9069c2fb
ML		 2140}
2141
9b1502ef
ML		 2142CREATE_ACCESSORS(baudrate, int)
2143CREATE_ACCESSORS(bits, int)
2144CREATE_ACCESSORS(parity, enum sp_parity)
2145CREATE_ACCESSORS(stopbits, int)
2146CREATE_ACCESSORS(rts, enum sp_rts)
2147CREATE_ACCESSORS(cts, enum sp_cts)
2148CREATE_ACCESSORS(dtr, enum sp_dtr)
2149CREATE_ACCESSORS(dsr, enum sp_dsr)
2150CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2151
970f279a
AJ		 2152SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2153 enum sp_flowcontrol flowcontrol)
e33ab9aa 2154{
9b1502ef
ML		 2155 if (!config)
2156 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2157
2158 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2159 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2160
e33ab9aa 2161 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2162 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2163 else
9b1502ef 2164 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2165
2166 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2167 config->rts = SP_RTS_FLOW_CONTROL;
2168 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2169 } else {
9b1502ef
ML		 2170 if (config->rts == SP_RTS_FLOW_CONTROL)
2171 config->rts = SP_RTS_ON;
2172 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2173 }
2174
2175 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2176 config->dtr = SP_DTR_FLOW_CONTROL;
2177 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2178 } else {
9b1502ef
ML		 2179 if (config->dtr == SP_DTR_FLOW_CONTROL)
2180 config->dtr = SP_DTR_ON;
2181 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2182 }
2183
9b1502ef
ML		 2184 RETURN_OK();
2185}
2186
970f279a
AJ		 2187SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2188 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2189{
2190 struct port_data data;
2191 struct sp_port_config config;
2192
2193 TRACE("%p, %d", port, flowcontrol);
2194
2195 CHECK_OPEN_PORT();
2196
2197 TRY(get_config(port, &data, &config));
2198
2199 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2200
e33ab9aa
ML		 2201 TRY(set_config(port, &data, &config));
2202
c33efc48 2203 RETURN_OK();
e33ab9aa
ML		 2204}
2205
970f279a
AJ		 2206SP_API enum sp_return sp_get_signals(struct sp_port *port,
2207 enum sp_signal *signals)
8cf7c697 2208{
c33efc48
ML		 2209 TRACE("%p, %p", port, signals);
2210
dec10e31 2211 CHECK_OPEN_PORT();
8cf7c697
ML		 2212
2213 if (!signals)
c33efc48 2214 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2215
7890cef6 2216 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2217
8cf7c697
ML		 2218 *signals = 0;
2219#ifdef _WIN32
2220 DWORD bits;
2221 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2222 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2223 if (bits & MS_CTS_ON)
2224 *signals |= SP_SIG_CTS;
2225 if (bits & MS_DSR_ON)
2226 *signals |= SP_SIG_DSR;
8cf7c697 2227 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2228 *signals |= SP_SIG_DCD;
2229 if (bits & MS_RING_ON)
8cf7c697
ML		 2230 *signals |= SP_SIG_RI;
2231#else
2232 int bits;
2233 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2234 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2235 if (bits & TIOCM_CTS)
2236 *signals |= SP_SIG_CTS;
2237 if (bits & TIOCM_DSR)
2238 *signals |= SP_SIG_DSR;
2239 if (bits & TIOCM_CAR)
2240 *signals |= SP_SIG_DCD;
2241 if (bits & TIOCM_RNG)
2242 *signals |= SP_SIG_RI;
2243#endif
c33efc48 2244 RETURN_OK();
8cf7c697
ML		 2245}
2246
970f279a 2247SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2248{
c33efc48
ML		 2249 TRACE("%p", port);
2250
dec10e31 2251 CHECK_OPEN_PORT();
90cc3ee6
ML		 2252#ifdef _WIN32
2253 if (SetCommBreak(port->hdl) == 0)
c33efc48 2254 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2255#else
2256 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2257 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2258#endif
2259
c33efc48 2260 RETURN_OK();
90cc3ee6
ML		 2261}
2262
970f279a 2263SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2264{
c33efc48
ML		 2265 TRACE("%p", port);
2266
dec10e31 2267 CHECK_OPEN_PORT();
90cc3ee6
ML		 2268#ifdef _WIN32
2269 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2270 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2271#else
2272 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2273 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2274#endif
2275
c33efc48 2276 RETURN_OK();
90cc3ee6
ML		 2277}
2278
970f279a 2279SP_API int sp_last_error_code(void)
74510d4b 2280{
7890cef6 2281 TRACE_VOID();
74510d4b 2282#ifdef _WIN32
9caa2e86 2283 RETURN_INT(GetLastError());
74510d4b 2284#else
9caa2e86 2285 RETURN_INT(errno);
74510d4b
ML		 2286#endif
2287}
2288
970f279a 2289SP_API char *sp_last_error_message(void)
74510d4b 2290{
7890cef6 2291 TRACE_VOID();
c33efc48 2292
74510d4b 2293#ifdef _WIN32
9a0c4bbd 2294 TCHAR *message;
74510d4b
ML		 2295 DWORD error = GetLastError();
2296
9a0c4bbd 2297 DWORD length = FormatMessage(
74510d4b
ML		 2298 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2299 FORMAT_MESSAGE_FROM_SYSTEM |
2300 FORMAT_MESSAGE_IGNORE_INSERTS,
2301 NULL,
2302 error,
2303 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2304 (LPTSTR) &message,
2305 0, NULL );
2306
9a0c4bbd
ML		 2307 if (length >= 2 && message[length - 2] == '\r')
2308 message[length - 2] = '\0';
2309
9caa2e86 2310 RETURN_STRING(message);
74510d4b 2311#else
9caa2e86 2312 RETURN_STRING(strerror(errno));
74510d4b
ML		 2313#endif
2314}
2315
970f279a 2316SP_API void sp_free_error_message(char *message)
74510d4b 2317{
c33efc48
ML		 2318 TRACE("%s", message);
2319
74510d4b
ML		 2320#ifdef _WIN32
2321 LocalFree(message);
64eec30d
ML		 2322#else
2323 (void)message;
74510d4b 2324#endif
c33efc48
ML		 2325
2326 RETURN();
74510d4b 2327}
863b35e6 2328
970f279a 2329SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2330{
c33efc48
ML		 2331 TRACE("%p", handler);
2332
863b35e6 2333 sp_debug_handler = handler;
c33efc48
ML		 2334
2335 RETURN();
863b35e6
ML		 2336}
2337
970f279a 2338SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2339{
2340 va_list args;
2341 va_start(args, format);
2342 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2343 fputs("sp: ", stderr);
863b35e6
ML		 2344 vfprintf(stderr, format, args);
2345 }
2346 va_end(args);
2347}
524b0e14 2348
970f279a 2349SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2350{
2351 return SP_PACKAGE_VERSION_MAJOR;
2352}
2353
970f279a 2354SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2355{
2356 return SP_PACKAGE_VERSION_MINOR;
2357}
2358
970f279a 2359SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2360{
2361 return SP_PACKAGE_VERSION_MICRO;
2362}
2363
970f279a 2364SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2365{
2366 return SP_PACKAGE_VERSION_STRING;
2367}
2368
970f279a 2369SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2370{
2371 return SP_LIB_VERSION_CURRENT;
2372}
2373
970f279a 2374SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2375{
2376 return SP_LIB_VERSION_REVISION;
2377}
2378
970f279a 2379SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2380{
2381 return SP_LIB_VERSION_AGE;
2382}
2383
970f279a 2384SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2385{
2386 return SP_LIB_VERSION_STRING;
2387}
2388
2389/** @} */
Serial port access library