]> sigrok.org Git - libserialport.git/blame - serialport.c
projects / libserialport.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Build: Use GNUMAKEFLAGS and $@
[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>
f77bb46d
ML		 5 * Copyright (C) 2010-2015 Uwe Hermann <uwe@hermann-uwe.de>
6 * Copyright (C) 2013-2015 Martin Ling <martin-libserialport@earth.li>
31b3a8f5 7 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
a93fb468 8 * Copyright (C) 2014 Aurelien Jacobs <aurel@gnuage.org>
74510d4b
ML		 9 *
10 * This program is free software: you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as
12 * published by the Free Software Foundation, either version 3 of the
13 * License, or (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program. If not, see <http://www.gnu.org/licenses/>.
22 */
23
f6a1fb65 24#include "libserialport.h"
e33dcf90 25#include "libserialport_internal.h"
da2748bf 26
6c6aebe7 27static const struct std_baudrate std_baudrates[] = {
da2748bf
ML		 28#ifdef _WIN32
29 /*
30 * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to
31 * have documented CBR_* macros.
32 */
33 BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800),
34 BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600),
eac329d2 35 BAUD(115200), BAUD(128000), BAUD(256000),
da2748bf 36#else
eac329d2
UH		 37 BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200),
38 BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800),
39 BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200),
40 BAUD(230400),
da2748bf 41#if !defined(__APPLE__) && !defined(__OpenBSD__)
eac329d2 42 BAUD(460800),
da2748bf
ML		 43#endif
44#endif
45};
46
6c6aebe7
UH		 47#define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates)
48
863b35e6
ML		 49void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler;
50
eb6ed20f
ML		 51static enum sp_return get_config(struct sp_port *port, struct port_data *data,
52 struct sp_port_config *config);
e33dcf90 53
eb6ed20f
ML		 54static enum sp_return set_config(struct sp_port *port, struct port_data *data,
55 const struct sp_port_config *config);
80186526 56
970f279a 57SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr)
d54e9004
ML		 58{
59 struct sp_port *port;
5a8810e2 60#ifndef NO_PORT_METADATA
a93fb468 61 enum sp_return ret;
5a8810e2 62#endif
5919c913 63 int len;
d54e9004 64
c33efc48
ML		 65 TRACE("%s, %p", portname, port_ptr);
66
32b5ac05 67 if (!port_ptr)
c33efc48 68 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05 69
77f262c4
ML		 70 *port_ptr = NULL;
71
d4babed2 72 if (!portname)
c33efc48 73 RETURN_ERROR(SP_ERR_ARG, "Null port name");
d4babed2 74
7890cef6 75 DEBUG_FMT("Building structure for port %s", portname);
ea667be7 76
d54e9004 77 if (!(port = malloc(sizeof(struct sp_port))))
c33efc48 78 RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed");
d54e9004 79
5919c913
ML		 80 len = strlen(portname) + 1;
81
eac329d2 82 if (!(port->name = malloc(len))) {
d54e9004 83 free(port);
c33efc48 84 RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed");
d54e9004
ML		 85 }
86
87 memcpy(port->name, portname, len);
88
8f471c66 89#ifdef _WIN32
e31f2c6b 90 port->usb_path = NULL;
8f471c66
ML		 91 port->hdl = INVALID_HANDLE_VALUE;
92#else
93 port->fd = -1;
94#endif
95
e33dcf90
ML		 96 port->description = NULL;
97 port->transport = SP_TRANSPORT_NATIVE;
98 port->usb_bus = -1;
99 port->usb_address = -1;
100 port->usb_vid = -1;
101 port->usb_pid = -1;
102 port->usb_manufacturer = NULL;
103 port->usb_product = NULL;
104 port->usb_serial = NULL;
105 port->bluetooth_address = NULL;
106
e4ce975a 107#ifndef NO_PORT_METADATA
e33dcf90 108 if ((ret = get_port_details(port)) != SP_OK) {
a93fb468
AJ		 109 sp_free_port(port);
110 return ret;
111 }
e4ce975a 112#endif
a93fb468 113
77f262c4
ML		 114 *port_ptr = port;
115
c33efc48 116 RETURN_OK();
d54e9004
ML		 117}
118
970f279a 119SP_API char *sp_get_port_name(const struct sp_port *port)
1c5aae9d
ML		 120{
121 TRACE("%p", port);
122
123 if (!port)
124 return NULL;
125
9caa2e86 126 RETURN_STRING(port->name);
1c5aae9d
ML		 127}
128
f1480939 129SP_API char *sp_get_port_description(const struct sp_port *port)
a93fb468
AJ		 130{
131 TRACE("%p", port);
132
133 if (!port || !port->description)
134 return NULL;
135
9caa2e86 136 RETURN_STRING(port->description);
a93fb468
AJ		 137}
138
ad036cc8 139SP_API enum sp_transport sp_get_port_transport(const struct sp_port *port)
a93fb468
AJ		 140{
141 TRACE("%p", port);
142
143 if (!port)
144 RETURN_ERROR(SP_ERR_ARG, "Null port");
145
9caa2e86 146 RETURN_INT(port->transport);
a93fb468
AJ		 147}
148
970f279a
AJ		 149SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port,
150 int *usb_bus,int *usb_address)
a93fb468
AJ		 151{
152 TRACE("%p", port);
153
154 if (!port)
155 RETURN_ERROR(SP_ERR_ARG, "Null port");
156 if (port->transport != SP_TRANSPORT_USB)
157 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 158 if (port->usb_bus < 0 || port->usb_address < 0)
159 RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available");
a93fb468 160
dc422c04
UH		 161 if (usb_bus)
162 *usb_bus = port->usb_bus;
163 if (usb_address)
164 *usb_address = port->usb_address;
a93fb468
AJ		 165
166 RETURN_OK();
167}
168
970f279a
AJ		 169SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port,
170 int *usb_vid, int *usb_pid)
a93fb468
AJ		 171{
172 TRACE("%p", port);
173
174 if (!port)
175 RETURN_ERROR(SP_ERR_ARG, "Null port");
176 if (port->transport != SP_TRANSPORT_USB)
177 RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport");
65172bef
AJ		 178 if (port->usb_vid < 0 || port->usb_pid < 0)
179 RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available");
a93fb468 180
dc422c04
UH		 181 if (usb_vid)
182 *usb_vid = port->usb_vid;
183 if (usb_pid)
184 *usb_pid = port->usb_pid;
a93fb468
AJ		 185
186 RETURN_OK();
187}
188
970f279a 189SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port)
a93fb468
AJ		 190{
191 TRACE("%p", port);
192
193 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer)
194 return NULL;
195
9caa2e86 196 RETURN_STRING(port->usb_manufacturer);
a93fb468
AJ		 197}
198
970f279a 199SP_API char *sp_get_port_usb_product(const struct sp_port *port)
a93fb468
AJ		 200{
201 TRACE("%p", port);
202
203 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product)
204 return NULL;
205
9caa2e86 206 RETURN_STRING(port->usb_product);
a93fb468
AJ		 207}
208
970f279a 209SP_API char *sp_get_port_usb_serial(const struct sp_port *port)
a93fb468
AJ		 210{
211 TRACE("%p", port);
212
213 if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial)
214 return NULL;
215
9caa2e86 216 RETURN_STRING(port->usb_serial);
a93fb468
AJ		 217}
218
970f279a 219SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port)
a93fb468
AJ		 220{
221 TRACE("%p", port);
222
223 if (!port || port->transport != SP_TRANSPORT_BLUETOOTH
224 || !port->bluetooth_address)
225 return NULL;
226
9caa2e86 227 RETURN_STRING(port->bluetooth_address);
a93fb468
AJ		 228}
229
970f279a
AJ		 230SP_API enum sp_return sp_get_port_handle(const struct sp_port *port,
231 void *result_ptr)
3c126654 232{
00d8c56d 233 TRACE("%p, %p", port, result_ptr);
3c126654
ML		 234
235 if (!port)
236 RETURN_ERROR(SP_ERR_ARG, "Null port");
5f64c285
UH		 237 if (!result_ptr)
238 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
3c126654
ML		 239
240#ifdef _WIN32
241 HANDLE *handle_ptr = result_ptr;
242 *handle_ptr = port->hdl;
243#else
244 int *fd_ptr = result_ptr;
245 *fd_ptr = port->fd;
246#endif
247
248 RETURN_OK();
249}
250
970f279a
AJ		 251SP_API enum sp_return sp_copy_port(const struct sp_port *port,
252 struct sp_port **copy_ptr)
32b5ac05 253{
c33efc48
ML		 254 TRACE("%p, %p", port, copy_ptr);
255
32b5ac05 256 if (!copy_ptr)
c33efc48 257 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
32b5ac05
ML		 258
259 *copy_ptr = NULL;
260
c33efc48
ML		 261 if (!port)
262 RETURN_ERROR(SP_ERR_ARG, "Null port");
263
264 if (!port->name)
265 RETURN_ERROR(SP_ERR_ARG, "Null port name");
32b5ac05 266
ea667be7
ML		 267 DEBUG("Copying port structure");
268
9caa2e86 269 RETURN_INT(sp_get_port_by_name(port->name, copy_ptr));
32b5ac05
ML		 270}
271
970f279a 272SP_API void sp_free_port(struct sp_port *port)
e3b2f7a4 273{
c33efc48
ML		 274 TRACE("%p", port);
275
00d8c56d 276 if (!port) {
c33efc48
ML		 277 DEBUG("Null port");
278 RETURN();
279 }
e3b2f7a4 280
ea667be7
ML		 281 DEBUG("Freeing port structure");
282
e3b2f7a4
ML		 283 if (port->name)
284 free(port->name);
a93fb468
AJ		 285 if (port->description)
286 free(port->description);
287 if (port->usb_manufacturer)
288 free(port->usb_manufacturer);
289 if (port->usb_product)
290 free(port->usb_product);
291 if (port->usb_serial)
292 free(port->usb_serial);
293 if (port->bluetooth_address)
294 free(port->bluetooth_address);
295#ifdef _WIN32
296 if (port->usb_path)
297 free(port->usb_path);
298#endif
e3b2f7a4
ML		 299
300 free(port);
c33efc48
ML		 301
302 RETURN();
e3b2f7a4
ML		 303}
304
970f279a
AJ		 305SP_PRIV struct sp_port **list_append(struct sp_port **list,
306 const char *portname)
3b63f34d
ML		 307{
308 void *tmp;
309 unsigned int count;
f92f1f0c 310
3b63f34d 311 for (count = 0; list[count]; count++);
d54e9004 312 if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2))))
3b63f34d
ML		 313 goto fail;
314 list = tmp;
77f262c4 315 if (sp_get_port_by_name(portname, &list[count]) != SP_OK)
3b63f34d 316 goto fail;
db2794ce 317 list[count + 1] = NULL;
3b63f34d 318 return list;
f92f1f0c 319
3b63f34d
ML		 320fail:
321 sp_free_port_list(list);
322 return NULL;
323}
324
970f279a 325SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr)
3b63f34d 326{
23e7fa37 327#ifndef NO_ENUMERATION
d54e9004 328 struct sp_port **list;
48a4076f 329 int ret;
23e7fa37 330#endif
24c1a4bb 331
c33efc48
ML		 332 TRACE("%p", list_ptr);
333
dec10e31
ML		 334 if (!list_ptr)
335 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
336
63926415
UH		 337 *list_ptr = NULL;
338
8d12e620
ML		 339#ifdef NO_ENUMERATION
340 RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform");
341#else
ea667be7
ML		 342 DEBUG("Enumerating ports");
343
8d12e620 344 if (!(list = malloc(sizeof(struct sp_port *))))
c33efc48 345 RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed");
24c1a4bb
ML		 346
347 list[0] = NULL;
3b63f34d 348
48a4076f 349 ret = list_ports(&list);
77f262c4 350
8d12e620 351 if (ret == SP_OK) {
77f262c4 352 *list_ptr = list;
8d12e620
ML		 353 } else {
354 sp_free_port_list(list);
77f262c4
ML		 355 *list_ptr = NULL;
356 }
8d12e620
ML		 357
358 RETURN_CODEVAL(ret);
359#endif
3b63f34d
ML		 360}
361
970f279a 362SP_API void sp_free_port_list(struct sp_port **list)
3b63f34d
ML		 363{
364 unsigned int i;
f92f1f0c 365
c33efc48
ML		 366 TRACE("%p", list);
367
dec10e31
ML		 368 if (!list) {
369 DEBUG("Null list");
370 RETURN();
371 }
372
ea667be7
ML		 373 DEBUG("Freeing port list");
374
3b63f34d 375 for (i = 0; list[i]; i++)
e3b2f7a4 376 sp_free_port(list[i]);
3b63f34d 377 free(list);
c33efc48
ML		 378
379 RETURN();
3b63f34d
ML		 380}
381
c33efc48 382#define CHECK_PORT() do { \
dc422c04 383 if (!port) \
c33efc48 384 RETURN_ERROR(SP_ERR_ARG, "Null port"); \
dc422c04 385 if (!port->name) \
dec10e31
ML		 386 RETURN_ERROR(SP_ERR_ARG, "Null port name"); \
387} while (0)
388#ifdef _WIN32
389#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 390 if (port->hdl == INVALID_HANDLE_VALUE) \
391 RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \
dec10e31 392} while (0)
74510d4b 393#else
dec10e31 394#define CHECK_PORT_HANDLE() do { \
c33efc48
ML		 395 if (port->fd < 0) \
396 RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \
dec10e31 397} while (0)
74510d4b 398#endif
dec10e31
ML		 399#define CHECK_OPEN_PORT() do { \
400 CHECK_PORT(); \
401 CHECK_PORT_HANDLE(); \
402} while (0)
74510d4b 403
47fcf8ec
ML		 404#ifdef WIN32
405/** To be called after port receive buffer is emptied. */
406static enum sp_return restart_wait(struct sp_port *port)
407{
408 DWORD wait_result;
409
410 if (port->wait_running) {
411 /* Check status of running wait operation. */
412 if (GetOverlappedResult(port->hdl, &port->wait_ovl,
413 &wait_result, FALSE)) {
414 DEBUG("Previous wait completed");
415 port->wait_running = FALSE;
416 } else if (GetLastError() == ERROR_IO_INCOMPLETE) {
417 DEBUG("Previous wait still running");
418 RETURN_OK();
419 } else {
420 RETURN_FAIL("GetOverlappedResult() failed");
421 }
422 }
423
424 if (!port->wait_running) {
425 /* Start new wait operation. */
426 if (WaitCommEvent(port->hdl, &port->events,
427 &port->wait_ovl)) {
428 DEBUG("New wait returned, events already pending");
429 } else if (GetLastError() == ERROR_IO_PENDING) {
430 DEBUG("New wait running in background");
431 port->wait_running = TRUE;
432 } else {
433 RETURN_FAIL("WaitCommEvent() failed");
434 }
435 }
436
437 RETURN_OK();
438}
439#endif
440
970f279a 441SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags)
74510d4b 442{
bccc7c9f
ML		 443 struct port_data data;
444 struct sp_port_config config;
445 enum sp_return ret;
446
00d8c56d 447 TRACE("%p, 0x%x", port, flags);
c33efc48 448
dec10e31
ML		 449 CHECK_PORT();
450
276ef1b9 451 if (flags > SP_MODE_READ_WRITE)
dec10e31 452 RETURN_ERROR(SP_ERR_ARG, "Invalid flags");
74510d4b 453
7890cef6 454 DEBUG_FMT("Opening port %s", port->name);
ea667be7 455
74510d4b 456#ifdef _WIN32
537942c9 457 DWORD desired_access = 0, flags_and_attributes = 0, errors;
99945a1f 458 char *escaped_port_name;
537942c9 459 COMSTAT status;
99945a1f
ML		 460
461 /* Prefix port name with '\\.\' to work with ports above COM9. */
e48f0ece 462 if (!(escaped_port_name = malloc(strlen(port->name) + 5)))
c33efc48 463 RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed");
99945a1f
ML		 464 sprintf(escaped_port_name, "\\\\.\\%s", port->name);
465
74510d4b 466 /* Map 'flags' to the OS-specific settings. */
e3dcf906 467 flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED;
a036341b
ML		 468 if (flags & SP_MODE_READ)
469 desired_access |= GENERIC_READ;
470 if (flags & SP_MODE_WRITE)
74510d4b 471 desired_access |= GENERIC_WRITE;
74510d4b 472
99945a1f 473 port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0,
74510d4b 474 OPEN_EXISTING, flags_and_attributes, 0);
99945a1f
ML		 475
476 free(escaped_port_name);
477
74510d4b 478 if (port->hdl == INVALID_HANDLE_VALUE)
dc422c04 479 RETURN_FAIL("Port CreateFile() failed");
e3dcf906
ML		 480
481 /* All timeouts initially disabled. */
482 port->timeouts.ReadIntervalTimeout = 0;
483 port->timeouts.ReadTotalTimeoutMultiplier = 0;
484 port->timeouts.ReadTotalTimeoutConstant = 0;
485 port->timeouts.WriteTotalTimeoutMultiplier = 0;
486 port->timeouts.WriteTotalTimeoutConstant = 0;
a3cb91f5 487
e3dcf906 488 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) {
a3cb91f5
ML		 489 sp_close(port);
490 RETURN_FAIL("SetCommTimeouts() failed");
491 }
e3dcf906
ML		 492
493 /* Prepare OVERLAPPED structures. */
6f1186aa
ML		 494#define INIT_OVERLAPPED(ovl) do { \
495 memset(&port->ovl, 0, sizeof(port->ovl)); \
496 port->ovl.hEvent = INVALID_HANDLE_VALUE; \
497 if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \
498 == INVALID_HANDLE_VALUE) { \
499 sp_close(port); \
500 RETURN_FAIL(#ovl "CreateEvent() failed"); \
501 } \
502} while (0)
503
504 INIT_OVERLAPPED(read_ovl);
505 INIT_OVERLAPPED(write_ovl);
506 INIT_OVERLAPPED(wait_ovl);
507
508 /* Set event mask for RX and error events. */
509 if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) {
e3dcf906 510 sp_close(port);
6f1186aa 511 RETURN_FAIL("SetCommMask() failed");
e3dcf906 512 }
6f1186aa 513
e3dcf906 514 port->writing = FALSE;
47fcf8ec 515 port->wait_running = FALSE;
e3dcf906 516
47fcf8ec
ML		 517 ret = restart_wait(port);
518
519 if (ret < 0) {
520 sp_close(port);
521 RETURN_CODEVAL(ret);
522 }
74510d4b 523#else
e3dcf906 524 int flags_local = O_NONBLOCK | O_NOCTTY;
f92f1f0c 525
74510d4b 526 /* Map 'flags' to the OS-specific settings. */
276ef1b9 527 if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE)
74510d4b 528 flags_local |= O_RDWR;
a036341b 529 else if (flags & SP_MODE_READ)
74510d4b 530 flags_local |= O_RDONLY;
a036341b
ML		 531 else if (flags & SP_MODE_WRITE)
532 flags_local |= O_WRONLY;
74510d4b
ML		 533
534 if ((port->fd = open(port->name, flags_local)) < 0)
c33efc48 535 RETURN_FAIL("open() failed");
bccc7c9f 536#endif
9cb98459 537
e33ab9aa
ML		 538 ret = get_config(port, &data, &config);
539
eac329d2 540 if (ret < 0) {
e33ab9aa 541 sp_close(port);
c33efc48 542 RETURN_CODEVAL(ret);
e33ab9aa 543 }
9cb98459 544
bccc7c9f
ML		 545 /* Set sane port settings. */
546#ifdef _WIN32
547 data.dcb.fBinary = TRUE;
548 data.dcb.fDsrSensitivity = FALSE;
549 data.dcb.fErrorChar = FALSE;
550 data.dcb.fNull = FALSE;
34442106 551 data.dcb.fAbortOnError = FALSE;
bccc7c9f 552#else
b251be4b 553 /* Turn off all fancy termios tricks, give us a raw channel. */
c3e05092
UH		 554 data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL);
555#ifdef IUCLC
556 data.term.c_iflag &= ~IUCLC;
557#endif
558 data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET);
559#ifdef OLCUC
560 data.term.c_oflag &= ~OLCUC;
561#endif
562#ifdef NLDLY
563 data.term.c_oflag &= ~NLDLY;
564#endif
565#ifdef CRDLY
566 data.term.c_oflag &= ~CRDLY;
567#endif
568#ifdef TABDLY
569 data.term.c_oflag &= ~TABDLY;
570#endif
571#ifdef BSDLY
572 data.term.c_oflag &= ~BSDLY;
573#endif
574#ifdef VTDLY
575 data.term.c_oflag &= ~VTDLY;
576#endif
577#ifdef FFDLY
578 data.term.c_oflag &= ~FFDLY;
579#endif
b251be4b 580#ifdef OFILL
9cb98459
ML		 581 data.term.c_oflag &= ~OFILL;
582#endif
c3e05092 583 data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN);
e3dcf906 584 data.term.c_cc[VMIN] = 0;
b251be4b 585 data.term.c_cc[VTIME] = 0;
9cb98459 586
b251be4b
ML		 587 /* Ignore modem status lines; enable receiver; leave control lines alone on close. */
588 data.term.c_cflag |= (CLOCAL | CREAD | HUPCL);
bccc7c9f 589#endif
9cb98459 590
537942c9 591#ifdef _WIN32
1a2a1544
UH		 592 if (ClearCommError(port->hdl, &errors, &status) == 0)
593 RETURN_FAIL("ClearCommError() failed");
537942c9
ML		 594#endif
595
e33ab9aa
ML		 596 ret = set_config(port, &data, &config);
597
eac329d2 598 if (ret < 0) {
e33ab9aa 599 sp_close(port);
c33efc48 600 RETURN_CODEVAL(ret);
e33ab9aa 601 }
74510d4b 602
c33efc48 603 RETURN_OK();
74510d4b
ML		 604}
605
970f279a 606SP_API enum sp_return sp_close(struct sp_port *port)
74510d4b 607{
c33efc48
ML		 608 TRACE("%p", port);
609
dec10e31 610 CHECK_OPEN_PORT();
74510d4b 611
7890cef6 612 DEBUG_FMT("Closing port %s", port->name);
ea667be7 613
74510d4b
ML		 614#ifdef _WIN32
615 /* Returns non-zero upon success, 0 upon failure. */
616 if (CloseHandle(port->hdl) == 0)
dc422c04 617 RETURN_FAIL("Port CloseHandle() failed");
8f471c66 618 port->hdl = INVALID_HANDLE_VALUE;
6f1186aa
ML		 619
620 /* Close event handles for overlapped structures. */
621#define CLOSE_OVERLAPPED(ovl) do { \
622 if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \
623 CloseHandle(port->ovl.hEvent) == 0) \
624 RETURN_FAIL(# ovl "event CloseHandle() failed"); \
625} while (0)
626 CLOSE_OVERLAPPED(read_ovl);
627 CLOSE_OVERLAPPED(write_ovl);
628 CLOSE_OVERLAPPED(wait_ovl);
629
74510d4b
ML		 630#else
631 /* Returns 0 upon success, -1 upon failure. */
632 if (close(port->fd) == -1)
c33efc48 633 RETURN_FAIL("close() failed");
8f471c66 634 port->fd = -1;
74510d4b
ML		 635#endif
636
c33efc48 637 RETURN_OK();
74510d4b
ML		 638}
639
970f279a 640SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers)
74510d4b 641{
00d8c56d 642 TRACE("%p, 0x%x", port, buffers);
c33efc48 643
dec10e31
ML		 644 CHECK_OPEN_PORT();
645
646 if (buffers > SP_BUF_BOTH)
647 RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection");
74510d4b 648
0ba3e49b 649 const char *buffer_names[] = {"no", "input", "output", "both"};
ea667be7 650
7890cef6
ML		 651 DEBUG_FMT("Flushing %s buffers on port %s",
652 buffer_names[buffers], port->name);
ea667be7 653
74510d4b 654#ifdef _WIN32
fd8fd11a
ML		 655 DWORD flags = 0;
656 if (buffers & SP_BUF_INPUT)
657 flags |= PURGE_RXCLEAR;
658 if (buffers & SP_BUF_OUTPUT)
659 flags |= PURGE_TXCLEAR;
660
74510d4b 661 /* Returns non-zero upon success, 0 upon failure. */
fd8fd11a 662 if (PurgeComm(port->hdl, flags) == 0)
c33efc48 663 RETURN_FAIL("PurgeComm() failed");
47fcf8ec
ML		 664
665 if (buffers & SP_BUF_INPUT)
666 TRY(restart_wait(port));
74510d4b 667#else
fd8fd11a 668 int flags = 0;
ad749855 669 if (buffers == SP_BUF_BOTH)
fd8fd11a 670 flags = TCIOFLUSH;
ad749855 671 else if (buffers == SP_BUF_INPUT)
fd8fd11a 672 flags = TCIFLUSH;
ad749855 673 else if (buffers == SP_BUF_OUTPUT)
fd8fd11a
ML		 674 flags = TCOFLUSH;
675
74510d4b 676 /* Returns 0 upon success, -1 upon failure. */
fd8fd11a 677 if (tcflush(port->fd, flags) < 0)
c33efc48 678 RETURN_FAIL("tcflush() failed");
74510d4b 679#endif
c33efc48 680 RETURN_OK();
74510d4b
ML		 681}
682
970f279a 683SP_API enum sp_return sp_drain(struct sp_port *port)
69a3739c 684{
c33efc48
ML		 685 TRACE("%p", port);
686
dec10e31 687 CHECK_OPEN_PORT();
69a3739c 688
7890cef6 689 DEBUG_FMT("Draining port %s", port->name);
ea667be7 690
69a3739c
ML		 691#ifdef _WIN32
692 /* Returns non-zero upon success, 0 upon failure. */
693 if (FlushFileBuffers(port->hdl) == 0)
c33efc48 694 RETURN_FAIL("FlushFileBuffers() failed");
2c827b21 695 RETURN_OK();
69a3739c 696#else
2c827b21
ML		 697 int result;
698 while (1) {
33fd8804
ML		 699#ifdef __ANDROID__
700 int arg = 1;
701 result = ioctl(port->fd, TCSBRK, &arg);
702#else
2c827b21 703 result = tcdrain(port->fd);
33fd8804 704#endif
2c827b21
ML		 705 if (result < 0) {
706 if (errno == EINTR) {
707 DEBUG("tcdrain() was interrupted");
708 continue;
709 } else {
710 RETURN_FAIL("tcdrain() failed");
711 }
712 } else {
713 RETURN_OK();
714 }
715 }
69a3739c 716#endif
69a3739c
ML		 717}
718
970f279a 719SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf,
1b91c6ea 720 size_t count, unsigned int timeout_ms)
e3dcf906 721{
1b91c6ea 722 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 723
724 CHECK_OPEN_PORT();
725
726 if (!buf)
727 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
728
1b91c6ea 729 if (timeout_ms)
7890cef6 730 DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms",
1b91c6ea 731 count, port->name, timeout_ms);
e3dcf906 732 else
7890cef6
ML		 733 DEBUG_FMT("Writing %d bytes to port %s, no timeout",
734 count, port->name);
e3dcf906
ML		 735
736 if (count == 0)
9caa2e86 737 RETURN_INT(0);
e3dcf906
ML		 738
739#ifdef _WIN32
740 DWORD bytes_written = 0;
741 BOOL result;
742
743 /* Wait for previous non-blocking write to complete, if any. */
744 if (port->writing) {
745 DEBUG("Waiting for previous write to complete");
746 result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE);
747 port->writing = 0;
748 if (!result)
749 RETURN_FAIL("Previous write failed to complete");
750 DEBUG("Previous write completed");
751 }
752
753 /* Set timeout. */
27a58c05
ML		 754 if (port->timeouts.WriteTotalTimeoutConstant != timeout_ms) {
755 port->timeouts.WriteTotalTimeoutConstant = timeout_ms;
756 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
757 RETURN_FAIL("SetCommTimeouts() failed");
758 }
e3dcf906
ML		 759
760 /* Start write. */
bbe566fe 761 if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl)) {
e3dcf906 762 DEBUG("Write completed immediately");
9caa2e86 763 RETURN_INT(count);
bbe566fe
ML		 764 } else if (GetLastError() == ERROR_IO_PENDING) {
765 DEBUG("Waiting for write to complete");
27911925
ML		 766 if (GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE) == 0)
767 RETURN_FAIL("GetOverlappedResult() failed");
bbe566fe
ML		 768 DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count);
769 RETURN_INT(bytes_written);
770 } else {
771 RETURN_FAIL("WriteFile() failed");
e3dcf906
ML		 772 }
773#else
774 size_t bytes_written = 0;
775 unsigned char *ptr = (unsigned char *) buf;
776 struct timeval start, delta, now, end = {0, 0};
76222ee5 777 int started = 0;
e3dcf906
ML		 778 fd_set fds;
779 int result;
780
1b91c6ea 781 if (timeout_ms) {
e3dcf906
ML		 782 /* Get time at start of operation. */
783 gettimeofday(&start, NULL);
784 /* Define duration of timeout. */
1b91c6ea
UH		 785 delta.tv_sec = timeout_ms / 1000;
786 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 787 /* Calculate time at which we should give up. */
788 timeradd(&start, &delta, &end);
789 }
790
772c5861
ML		 791 FD_ZERO(&fds);
792 FD_SET(port->fd, &fds);
793
e3dcf906 794 /* Loop until we have written the requested number of bytes. */
dc422c04 795 while (bytes_written < count) {
76222ee5
ML		 796 /*
797 * Check timeout only if we have run select() at least once,
798 * to avoid any issues if a short timeout is reached before
799 * select() is even run.
800 */
801 if (timeout_ms && started) {
e3dcf906 802 gettimeofday(&now, NULL);
c3cee38c
ML		 803 if (timercmp(&now, &end, >))
804 /* Timeout has expired. */
805 break;
e3dcf906
ML		 806 timersub(&end, &now, &delta);
807 }
1b91c6ea 808 result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL);
76222ee5 809 started = 1;
63a17c64
ML		 810 if (result < 0) {
811 if (errno == EINTR) {
812 DEBUG("select() call was interrupted, repeating");
813 continue;
814 } else {
815 RETURN_FAIL("select() failed");
816 }
817 } else if (result == 0) {
c3cee38c
ML		 818 /* Timeout has expired. */
819 break;
e3dcf906
ML		 820 }
821
822 /* Do write. */
823 result = write(port->fd, ptr, count - bytes_written);
824
825 if (result < 0) {
826 if (errno == EAGAIN)
827 /* This shouldn't happen because we did a select() first, but handle anyway. */
828 continue;
829 else
830 /* This is an actual failure. */
831 RETURN_FAIL("write() failed");
832 }
833
834 bytes_written += result;
835 ptr += result;
836 }
837
c3cee38c
ML		 838 if (bytes_written < count)
839 DEBUG("Write timed out");
840
9caa2e86 841 RETURN_INT(bytes_written);
e3dcf906
ML		 842#endif
843}
844
970f279a
AJ		 845SP_API enum sp_return sp_nonblocking_write(struct sp_port *port,
846 const void *buf, size_t count)
74510d4b 847{
c33efc48
ML		 848 TRACE("%p, %p, %d", port, buf, count);
849
dec10e31 850 CHECK_OPEN_PORT();
74510d4b
ML		 851
852 if (!buf)
c33efc48 853 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 854
7890cef6 855 DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name);
ea667be7 856
a3cb91f5 857 if (count == 0)
9caa2e86 858 RETURN_INT(0);
a3cb91f5 859
74510d4b
ML		 860#ifdef _WIN32
861 DWORD written = 0;
0765af56 862 BYTE *ptr = (BYTE *) buf;
f92f1f0c 863
e3dcf906
ML		 864 /* Check whether previous write is complete. */
865 if (port->writing) {
866 if (HasOverlappedIoCompleted(&port->write_ovl)) {
867 DEBUG("Previous write completed");
868 port->writing = 0;
869 } else {
870 DEBUG("Previous write not complete");
871 /* Can't take a new write until the previous one finishes. */
9caa2e86 872 RETURN_INT(0);
a3cb91f5 873 }
e3dcf906 874 }
a3cb91f5 875
e3dcf906 876 /* Set timeout. */
27a58c05
ML		 877 if (port->timeouts.WriteTotalTimeoutConstant != 0) {
878 port->timeouts.WriteTotalTimeoutConstant = 0;
879 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
880 RETURN_FAIL("SetCommTimeouts() failed");
881 }
e3dcf906 882
dc422c04
UH		 883 /*
884 * Keep writing data until the OS has to actually start an async IO
885 * for it. At that point we know the buffer is full.
886 */
887 while (written < count) {
e3dcf906
ML		 888 /* Copy first byte of user buffer. */
889 port->pending_byte = *ptr++;
890
891 /* Start asynchronous write. */
892 if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) {
893 if (GetLastError() == ERROR_IO_PENDING) {
64d99621
ML		 894 if (HasOverlappedIoCompleted(&port->write_ovl)) {
895 DEBUG("Asynchronous write completed immediately");
896 port->writing = 0;
897 written++;
898 continue;
899 } else {
900 DEBUG("Asynchronous write running");
901 port->writing = 1;
9caa2e86 902 RETURN_INT(++written);
64d99621 903 }
a3cb91f5 904 } else {
e3dcf906
ML		 905 /* Actual failure of some kind. */
906 RETURN_FAIL("WriteFile() failed");
a3cb91f5 907 }
e3dcf906 908 } else {
9af8cff3 909 DEBUG("Single byte written immediately");
e3dcf906 910 written++;
a3cb91f5
ML		 911 }
912 }
913
9af8cff3 914 DEBUG("All bytes written immediately");
e3dcf906 915
9caa2e86 916 RETURN_INT(written);
74510d4b
ML		 917#else
918 /* Returns the number of bytes written, or -1 upon failure. */
919 ssize_t written = write(port->fd, buf, count);
f92f1f0c 920
74510d4b 921 if (written < 0)
c33efc48 922 RETURN_FAIL("write() failed");
74510d4b 923 else
9caa2e86 924 RETURN_INT(written);
74510d4b
ML		 925#endif
926}
927
94a314a8
ML		 928#ifdef _WIN32
929/* Restart wait operation if buffer was emptied. */
930static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read)
931{
8ebfaf89
ML		 932 DWORD errors;
933 COMSTAT comstat;
94a314a8 934
21ae5ce1
ML		 935 if (bytes_read == 0)
936 RETURN_OK();
937
8ebfaf89
ML		 938 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
939 RETURN_FAIL("ClearCommError() failed");
94a314a8 940
8ebfaf89 941 if (comstat.cbInQue == 0)
94a314a8
ML		 942 TRY(restart_wait(port));
943
944 RETURN_OK();
945}
946#endif
947
970f279a 948SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf,
1b91c6ea 949 size_t count, unsigned int timeout_ms)
e3dcf906 950{
1b91c6ea 951 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
e3dcf906
ML		 952
953 CHECK_OPEN_PORT();
954
955 if (!buf)
956 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
957
1b91c6ea 958 if (timeout_ms)
7890cef6 959 DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms",
1b91c6ea 960 count, port->name, timeout_ms);
e3dcf906 961 else
7890cef6
ML		 962 DEBUG_FMT("Reading %d bytes from port %s, no timeout",
963 count, port->name);
e3dcf906
ML		 964
965 if (count == 0)
9caa2e86 966 RETURN_INT(0);
e3dcf906
ML		 967
968#ifdef _WIN32
969 DWORD bytes_read = 0;
970
971 /* Set timeout. */
27a58c05 972 if (port->timeouts.ReadIntervalTimeout != 0 ||
0188a545 973 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 974 port->timeouts.ReadTotalTimeoutConstant != timeout_ms) {
975 port->timeouts.ReadIntervalTimeout = 0;
0188a545 976 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 977 port->timeouts.ReadTotalTimeoutConstant = timeout_ms;
978 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
979 RETURN_FAIL("SetCommTimeouts() failed");
980 }
e3dcf906
ML		 981
982 /* Start read. */
bbe566fe 983 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) {
e3dcf906 984 DEBUG("Read completed immediately");
6f1186aa 985 bytes_read = count;
bbe566fe
ML		 986 } else if (GetLastError() == ERROR_IO_PENDING) {
987 DEBUG("Waiting for read to complete");
27911925
ML		 988 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
989 RETURN_FAIL("GetOverlappedResult() failed");
bbe566fe
ML		 990 DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count);
991 } else {
992 RETURN_FAIL("ReadFile() failed");
6f1186aa
ML		 993 }
994
94a314a8 995 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 996
9caa2e86 997 RETURN_INT(bytes_read);
6f1186aa 998
e3dcf906
ML		 999#else
1000 size_t bytes_read = 0;
1001 unsigned char *ptr = (unsigned char *) buf;
1002 struct timeval start, delta, now, end = {0, 0};
76222ee5 1003 int started = 0;
e3dcf906
ML		 1004 fd_set fds;
1005 int result;
1006
1b91c6ea 1007 if (timeout_ms) {
e3dcf906
ML		 1008 /* Get time at start of operation. */
1009 gettimeofday(&start, NULL);
1010 /* Define duration of timeout. */
1b91c6ea
UH		 1011 delta.tv_sec = timeout_ms / 1000;
1012 delta.tv_usec = (timeout_ms % 1000) * 1000;
e3dcf906
ML		 1013 /* Calculate time at which we should give up. */
1014 timeradd(&start, &delta, &end);
1015 }
1016
772c5861
ML		 1017 FD_ZERO(&fds);
1018 FD_SET(port->fd, &fds);
1019
e3dcf906 1020 /* Loop until we have the requested number of bytes. */
dc422c04 1021 while (bytes_read < count) {
76222ee5
ML		 1022 /*
1023 * Check timeout only if we have run select() at least once,
1024 * to avoid any issues if a short timeout is reached before
1025 * select() is even run.
1026 */
1027 if (timeout_ms && started) {
e3dcf906
ML		 1028 gettimeofday(&now, NULL);
1029 if (timercmp(&now, &end, >))
1030 /* Timeout has expired. */
c3cee38c 1031 break;
e3dcf906
ML		 1032 timersub(&end, &now, &delta);
1033 }
1b91c6ea 1034 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
76222ee5 1035 started = 1;
63a17c64
ML		 1036 if (result < 0) {
1037 if (errno == EINTR) {
1038 DEBUG("select() call was interrupted, repeating");
1039 continue;
1040 } else {
1041 RETURN_FAIL("select() failed");
1042 }
1043 } else if (result == 0) {
c3cee38c
ML		 1044 /* Timeout has expired. */
1045 break;
e3dcf906
ML		 1046 }
1047
1048 /* Do read. */
1049 result = read(port->fd, ptr, count - bytes_read);
1050
1051 if (result < 0) {
1052 if (errno == EAGAIN)
76222ee5
ML		 1053 /*
1054 * This shouldn't happen because we did a
1055 * select() first, but handle anyway.
1056 */
e3dcf906
ML		 1057 continue;
1058 else
1059 /* This is an actual failure. */
1060 RETURN_FAIL("read() failed");
1061 }
1062
1063 bytes_read += result;
1064 ptr += result;
1065 }
1066
c3cee38c
ML		 1067 if (bytes_read < count)
1068 DEBUG("Read timed out");
1069
9caa2e86 1070 RETURN_INT(bytes_read);
e3dcf906
ML		 1071#endif
1072}
1073
e5c2630e
ML		 1074SP_API enum sp_return sp_blocking_read_next(struct sp_port *port, void *buf,
1075 size_t count, unsigned int timeout_ms)
1076{
1077 TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms);
1078
1079 CHECK_OPEN_PORT();
1080
1081 if (!buf)
1082 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
1083
1084 if (count == 0)
1085 RETURN_ERROR(SP_ERR_ARG, "Zero count");
1086
1087 if (timeout_ms)
1088 DEBUG_FMT("Reading next max %d bytes from port %s, timeout %d ms",
1089 count, port->name, timeout_ms);
1090 else
1091 DEBUG_FMT("Reading next max %d bytes from port %s, no timeout",
1092 count, port->name);
1093
1094#ifdef _WIN32
1095 DWORD bytes_read = 0;
1096
1097 /* If timeout_ms == 0, set maximum timeout. */
1098 DWORD timeout_val = (timeout_ms == 0 ? MAXDWORD - 1 : timeout_ms);
1099
1100 /* Set timeout. */
1101 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
1102 port->timeouts.ReadTotalTimeoutMultiplier != MAXDWORD ||
1103 port->timeouts.ReadTotalTimeoutConstant != timeout_val) {
1104 port->timeouts.ReadIntervalTimeout = MAXDWORD;
1105 port->timeouts.ReadTotalTimeoutMultiplier = MAXDWORD;
1106 port->timeouts.ReadTotalTimeoutConstant = timeout_val;
1107 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1108 RETURN_FAIL("SetCommTimeouts() failed");
1109 }
1110
1111 /* Loop until we have at least one byte, or timeout is reached. */
1112 while (bytes_read == 0) {
1113 /* Start read. */
1114 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) {
1115 DEBUG("Read completed immediately");
1116 bytes_read = count;
1117 } else if (GetLastError() == ERROR_IO_PENDING) {
1118 DEBUG("Waiting for read to complete");
1119 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1120 RETURN_FAIL("GetOverlappedResult() failed");
1121 if (bytes_read > 0) {
1122 DEBUG("Read completed");
1123 } else if (timeout_ms > 0) {
1124 DEBUG("Read timed out");
1125 break;
1126 } else {
1127 DEBUG("Restarting read");
1128 }
1129 } else {
1130 RETURN_FAIL("ReadFile() failed");
1131 }
1132 }
1133
1134 TRY(restart_wait_if_needed(port, bytes_read));
1135
1136 RETURN_INT(bytes_read);
1137
1138#else
1139 size_t bytes_read = 0;
1140 struct timeval start, delta, now, end = {0, 0};
1141 int started = 0;
1142 fd_set fds;
1143 int result;
1144
1145 if (timeout_ms) {
1146 /* Get time at start of operation. */
1147 gettimeofday(&start, NULL);
1148 /* Define duration of timeout. */
1149 delta.tv_sec = timeout_ms / 1000;
1150 delta.tv_usec = (timeout_ms % 1000) * 1000;
1151 /* Calculate time at which we should give up. */
1152 timeradd(&start, &delta, &end);
1153 }
1154
1155 FD_ZERO(&fds);
1156 FD_SET(port->fd, &fds);
1157
1158 /* Loop until we have at least one byte, or timeout is reached. */
1159 while (bytes_read == 0) {
1160 /*
1161 * Check timeout only if we have run select() at least once,
1162 * to avoid any issues if a short timeout is reached before
1163 * select() is even run.
1164 */
1165 if (timeout_ms && started) {
1166 gettimeofday(&now, NULL);
1167 if (timercmp(&now, &end, >))
1168 /* Timeout has expired. */
1169 break;
1170 timersub(&end, &now, &delta);
1171 }
1172 result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL);
1173 started = 1;
1174 if (result < 0) {
1175 if (errno == EINTR) {
1176 DEBUG("select() call was interrupted, repeating");
1177 continue;
1178 } else {
1179 RETURN_FAIL("select() failed");
1180 }
1181 } else if (result == 0) {
1182 /* Timeout has expired. */
1183 break;
1184 }
1185
1186 /* Do read. */
1187 result = read(port->fd, buf, count);
1188
1189 if (result < 0) {
1190 if (errno == EAGAIN)
1191 /* This shouldn't happen because we did a select() first, but handle anyway. */
1192 continue;
1193 else
1194 /* This is an actual failure. */
1195 RETURN_FAIL("read() failed");
1196 }
1197
1198 bytes_read = result;
1199 }
1200
1201 if (bytes_read == 0)
1202 DEBUG("Read timed out");
1203
1204 RETURN_INT(bytes_read);
1205#endif
1206}
1207
970f279a
AJ		 1208SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf,
1209 size_t count)
74510d4b 1210{
c33efc48
ML		 1211 TRACE("%p, %p, %d", port, buf, count);
1212
dec10e31 1213 CHECK_OPEN_PORT();
74510d4b
ML		 1214
1215 if (!buf)
c33efc48 1216 RETURN_ERROR(SP_ERR_ARG, "Null buffer");
74510d4b 1217
7890cef6 1218 DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name);
ea667be7 1219
74510d4b 1220#ifdef _WIN32
e3dcf906 1221 DWORD bytes_read;
f92f1f0c 1222
e3dcf906 1223 /* Set timeout. */
27a58c05 1224 if (port->timeouts.ReadIntervalTimeout != MAXDWORD ||
0188a545 1225 port->timeouts.ReadTotalTimeoutMultiplier != 0 ||
27a58c05
ML		 1226 port->timeouts.ReadTotalTimeoutConstant != 0) {
1227 port->timeouts.ReadIntervalTimeout = MAXDWORD;
0188a545 1228 port->timeouts.ReadTotalTimeoutMultiplier = 0;
27a58c05
ML		 1229 port->timeouts.ReadTotalTimeoutConstant = 0;
1230 if (SetCommTimeouts(port->hdl, &port->timeouts) == 0)
1231 RETURN_FAIL("SetCommTimeouts() failed");
1232 }
e3dcf906
ML		 1233
1234 /* Do read. */
1235 if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0)
c33efc48 1236 RETURN_FAIL("ReadFile() failed");
e3dcf906
ML		 1237
1238 /* Get number of bytes read. */
1622ef60
ML		 1239 if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0)
1240 RETURN_FAIL("GetOverlappedResult() failed");
e3dcf906 1241
94a314a8 1242 TRY(restart_wait_if_needed(port, bytes_read));
6f1186aa 1243
9caa2e86 1244 RETURN_INT(bytes_read);
74510d4b
ML		 1245#else
1246 ssize_t bytes_read;
f92f1f0c 1247
74510d4b 1248 /* Returns the number of bytes read, or -1 upon failure. */
33d5ff47 1249 if ((bytes_read = read(port->fd, buf, count)) < 0) {
e3dcf906
ML		 1250 if (errno == EAGAIN)
1251 /* No bytes available. */
33d5ff47
ML		 1252 bytes_read = 0;
1253 else
1254 /* This is an actual failure. */
1255 RETURN_FAIL("read() failed");
1256 }
9caa2e86 1257 RETURN_INT(bytes_read);
74510d4b
ML		 1258#endif
1259}
1260
970f279a 1261SP_API enum sp_return sp_input_waiting(struct sp_port *port)
3353c22f
ML		 1262{
1263 TRACE("%p", port);
1264
1265 CHECK_OPEN_PORT();
1266
7890cef6 1267 DEBUG_FMT("Checking input bytes waiting on port %s", port->name);
3353c22f
ML		 1268
1269#ifdef _WIN32
1270 DWORD errors;
1271 COMSTAT comstat;
1272
1273 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1274 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1275 RETURN_INT(comstat.cbInQue);
3353c22f
ML		 1276#else
1277 int bytes_waiting;
1278 if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0)
1279 RETURN_FAIL("TIOCINQ ioctl failed");
9caa2e86 1280 RETURN_INT(bytes_waiting);
3353c22f
ML		 1281#endif
1282}
1283
970f279a 1284SP_API enum sp_return sp_output_waiting(struct sp_port *port)
3353c22f
ML		 1285{
1286 TRACE("%p", port);
1287
1288 CHECK_OPEN_PORT();
1289
7890cef6 1290 DEBUG_FMT("Checking output bytes waiting on port %s", port->name);
3353c22f
ML		 1291
1292#ifdef _WIN32
1293 DWORD errors;
1294 COMSTAT comstat;
1295
1296 if (ClearCommError(port->hdl, &errors, &comstat) == 0)
1a2a1544 1297 RETURN_FAIL("ClearCommError() failed");
9caa2e86 1298 RETURN_INT(comstat.cbOutQue);
3353c22f
ML		 1299#else
1300 int bytes_waiting;
1301 if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0)
1302 RETURN_FAIL("TIOCOUTQ ioctl failed");
9caa2e86 1303 RETURN_INT(bytes_waiting);
3353c22f
ML		 1304#endif
1305}
1306
970f279a 1307SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr)
6f1186aa
ML		 1308{
1309 struct sp_event_set *result;
1310
1311 TRACE("%p", result_ptr);
1312
1313 if (!result_ptr)
1314 RETURN_ERROR(SP_ERR_ARG, "Null result");
1315
1316 *result_ptr = NULL;
1317
1318 if (!(result = malloc(sizeof(struct sp_event_set))))
1319 RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed");
1320
1321 memset(result, 0, sizeof(struct sp_event_set));
1322
1323 *result_ptr = result;
1324
1325 RETURN_OK();
1326}
1327
1328static enum sp_return add_handle(struct sp_event_set *event_set,
1329 event_handle handle, enum sp_event mask)
1330{
1331 void *new_handles;
1332 enum sp_event *new_masks;
1333
1334 TRACE("%p, %d, %d", event_set, handle, mask);
1335
1336 if (!(new_handles = realloc(event_set->handles,
1337 sizeof(event_handle) * (event_set->count + 1))))
dc422c04 1338 RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed");
6f1186aa 1339
ac323d80
UH		 1340 event_set->handles = new_handles;
1341
6f1186aa 1342 if (!(new_masks = realloc(event_set->masks,
ac323d80 1343 sizeof(enum sp_event) * (event_set->count + 1))))
dc422c04 1344 RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed");
6f1186aa 1345
6f1186aa
ML		 1346 event_set->masks = new_masks;
1347
1348 ((event_handle *) event_set->handles)[event_set->count] = handle;
1349 event_set->masks[event_set->count] = mask;
1350
1351 event_set->count++;
1352
1353 RETURN_OK();
1354}
1355
970f279a 1356SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set,
6f1186aa
ML		 1357 const struct sp_port *port, enum sp_event mask)
1358{
1359 TRACE("%p, %p, %d", event_set, port, mask);
1360
1361 if (!event_set)
1362 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1363
1364 if (!port)
1365 RETURN_ERROR(SP_ERR_ARG, "Null port");
1366
1367 if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR))
1368 RETURN_ERROR(SP_ERR_ARG, "Invalid event mask");
1369
1370 if (!mask)
1371 RETURN_OK();
1372
1373#ifdef _WIN32
1374 enum sp_event handle_mask;
1375 if ((handle_mask = mask & SP_EVENT_TX_READY))
1376 TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask));
1377 if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR)))
1378 TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask));
1379#else
1380 TRY(add_handle(event_set, port->fd, mask));
1381#endif
1382
1383 RETURN_OK();
1384}
1385
970f279a 1386SP_API void sp_free_event_set(struct sp_event_set *event_set)
6f1186aa
ML		 1387{
1388 TRACE("%p", event_set);
1389
1390 if (!event_set) {
1391 DEBUG("Null event set");
1392 RETURN();
1393 }
1394
1395 DEBUG("Freeing event set");
1396
1397 if (event_set->handles)
1398 free(event_set->handles);
1399 if (event_set->masks)
1400 free(event_set->masks);
1401
1402 free(event_set);
1403
1404 RETURN();
1405}
1406
970f279a 1407SP_API enum sp_return sp_wait(struct sp_event_set *event_set,
1b91c6ea 1408 unsigned int timeout_ms)
6f1186aa 1409{
1b91c6ea 1410 TRACE("%p, %d", event_set, timeout_ms);
6f1186aa
ML		 1411
1412 if (!event_set)
1413 RETURN_ERROR(SP_ERR_ARG, "Null event set");
1414
1415#ifdef _WIN32
1416 if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE,
1b91c6ea 1417 timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED)
6f1186aa
ML		 1418 RETURN_FAIL("WaitForMultipleObjects() failed");
1419
1420 RETURN_OK();
1421#else
1422 struct timeval start, delta, now, end = {0, 0};
76222ee5 1423 int started = 0;
1b91c6ea 1424 int result, timeout_remaining_ms;
6f1186aa
ML		 1425 struct pollfd *pollfds;
1426 unsigned int i;
1427
1428 if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count)))
1429 RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed");
1430
1431 for (i = 0; i < event_set->count; i++) {
1432 pollfds[i].fd = ((int *) event_set->handles)[i];
1433 pollfds[i].events = 0;
1434 pollfds[i].revents = 0;
1435 if (event_set->masks[i] & SP_EVENT_RX_READY)
1436 pollfds[i].events |= POLLIN;
1437 if (event_set->masks[i] & SP_EVENT_TX_READY)
1438 pollfds[i].events |= POLLOUT;
1439 if (event_set->masks[i] & SP_EVENT_ERROR)
1440 pollfds[i].events |= POLLERR;
1441 }
1442
1b91c6ea 1443 if (timeout_ms) {
6f1186aa
ML		 1444 /* Get time at start of operation. */
1445 gettimeofday(&start, NULL);
1446 /* Define duration of timeout. */
1b91c6ea
UH		 1447 delta.tv_sec = timeout_ms / 1000;
1448 delta.tv_usec = (timeout_ms % 1000) * 1000;
6f1186aa
ML		 1449 /* Calculate time at which we should give up. */
1450 timeradd(&start, &delta, &end);
1451 }
1452
1453 /* Loop until an event occurs. */
dc422c04 1454 while (1) {
76222ee5
ML		 1455 /*
1456 * Check timeout only if we have run poll() at least once,
1457 * to avoid any issues if a short timeout is reached before
1458 * poll() is even run.
1459 */
6b8eee06
ML		 1460 if (!timeout_ms) {
1461 timeout_remaining_ms = -1;
1462 } else if (!started) {
1463 timeout_remaining_ms = timeout_ms;
1464 } else {
6f1186aa
ML		 1465 gettimeofday(&now, NULL);
1466 if (timercmp(&now, &end, >)) {
dc422c04 1467 DEBUG("Wait timed out");
6f1186aa
ML		 1468 break;
1469 }
1470 timersub(&end, &now, &delta);
1b91c6ea 1471 timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000;
6f1186aa
ML		 1472 }
1473
6b8eee06 1474 result = poll(pollfds, event_set->count, timeout_remaining_ms);
76222ee5 1475 started = 1;
6f1186aa
ML		 1476
1477 if (result < 0) {
1478 if (errno == EINTR) {
1479 DEBUG("poll() call was interrupted, repeating");
1480 continue;
1481 } else {
1482 free(pollfds);
1483 RETURN_FAIL("poll() failed");
1484 }
1485 } else if (result == 0) {
1486 DEBUG("poll() timed out");
1487 break;
1488 } else {
1489 DEBUG("poll() completed");
1490 break;
1491 }
1492 }
1493
1494 free(pollfds);
1495 RETURN_OK();
1496#endif
1497}
1498
5cea279a 1499#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1500static enum sp_return get_baudrate(int fd, int *baudrate)
1501{
1502 void *data;
1503
c33efc48
ML		 1504 TRACE("%d, %p", fd, baudrate);
1505
ea667be7
ML		 1506 DEBUG("Getting baud rate");
1507
7a6d2196 1508 if (!(data = malloc(get_termios_size())))
c33efc48 1509 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1510
8d43110a
ML		 1511 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1512 free(data);
dc422c04 1513 RETURN_FAIL("Getting termios failed");
8d43110a 1514 }
7a6d2196
ML		 1515
1516 *baudrate = get_termios_speed(data);
1517
8d43110a
ML		 1518 free(data);
1519
c33efc48 1520 RETURN_OK();
7a6d2196
ML		 1521}
1522
1523static enum sp_return set_baudrate(int fd, int baudrate)
1524{
1525 void *data;
1526
c33efc48
ML		 1527 TRACE("%d, %d", fd, baudrate);
1528
ea667be7
ML		 1529 DEBUG("Getting baud rate");
1530
7a6d2196 1531 if (!(data = malloc(get_termios_size())))
c33efc48 1532 RETURN_ERROR(SP_ERR_MEM, "termios malloc failed");
7a6d2196 1533
8d43110a
ML		 1534 if (ioctl(fd, get_termios_get_ioctl(), data) < 0) {
1535 free(data);
dc422c04 1536 RETURN_FAIL("Getting termios failed");
8d43110a 1537 }
7a6d2196 1538
ea667be7
ML		 1539 DEBUG("Setting baud rate");
1540
7a6d2196
ML		 1541 set_termios_speed(data, baudrate);
1542
8d43110a
ML		 1543 if (ioctl(fd, get_termios_set_ioctl(), data) < 0) {
1544 free(data);
dc422c04 1545 RETURN_FAIL("Setting termios failed");
8d43110a
ML		 1546 }
1547
1548 free(data);
7a6d2196 1549
c33efc48 1550 RETURN_OK();
7a6d2196 1551}
5cea279a 1552#endif /* USE_TERMIOS_SPEED */
40978c2b
ML		 1553
1554#ifdef USE_TERMIOX
bd791fe1 1555static enum sp_return get_flow(int fd, struct port_data *data)
40978c2b 1556{
bd791fe1 1557 void *termx;
40978c2b 1558
bd791fe1 1559 TRACE("%d, %p", fd, data);
c33efc48 1560
ea667be7
ML		 1561 DEBUG("Getting advanced flow control");
1562
bd791fe1 1563 if (!(termx = malloc(get_termiox_size())))
c33efc48 1564 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1565
bd791fe1
ML		 1566 if (ioctl(fd, TCGETX, termx) < 0) {
1567 free(termx);
dc422c04 1568 RETURN_FAIL("Getting termiox failed");
8d43110a 1569 }
40978c2b 1570
bd791fe1
ML		 1571 get_termiox_flow(termx, &data->rts_flow, &data->cts_flow,
1572 &data->dtr_flow, &data->dsr_flow);
40978c2b 1573
bd791fe1 1574 free(termx);
8d43110a 1575
c33efc48 1576 RETURN_OK();
40978c2b
ML		 1577}
1578
bd791fe1 1579static enum sp_return set_flow(int fd, struct port_data *data)
40978c2b 1580{
bd791fe1 1581 void *termx;
40978c2b 1582
bd791fe1 1583 TRACE("%d, %p", fd, data);
c33efc48 1584
ea667be7
ML		 1585 DEBUG("Getting advanced flow control");
1586
bd791fe1 1587 if (!(termx = malloc(get_termiox_size())))
c33efc48 1588 RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed");
40978c2b 1589
bd791fe1
ML		 1590 if (ioctl(fd, TCGETX, termx) < 0) {
1591 free(termx);
dc422c04 1592 RETURN_FAIL("Getting termiox failed");
8d43110a 1593 }
40978c2b 1594
ea667be7
ML		 1595 DEBUG("Setting advanced flow control");
1596
bd791fe1
ML		 1597 set_termiox_flow(termx, data->rts_flow, data->cts_flow,
1598 data->dtr_flow, data->dsr_flow);
40978c2b 1599
bd791fe1
ML		 1600 if (ioctl(fd, TCSETX, termx) < 0) {
1601 free(termx);
dc422c04 1602 RETURN_FAIL("Setting termiox failed");
8d43110a
ML		 1603 }
1604
bd791fe1 1605 free(termx);
40978c2b 1606
c33efc48 1607 RETURN_OK();
40978c2b
ML		 1608}
1609#endif /* USE_TERMIOX */
7a6d2196 1610
eb6ed20f
ML		 1611static enum sp_return get_config(struct sp_port *port, struct port_data *data,
1612 struct sp_port_config *config)
8094e4a0 1613{
da2748bf 1614 unsigned int i;
cbf628c7 1615
c33efc48
ML		 1616 TRACE("%p, %p, %p", port, data, config);
1617
7890cef6 1618 DEBUG_FMT("Getting configuration for port %s", port->name);
ea667be7 1619
8094e4a0 1620#ifdef _WIN32
e33ab9aa 1621 if (!GetCommState(port->hdl, &data->dcb))
c33efc48 1622 RETURN_FAIL("GetCommState() failed");
8094e4a0 1623
067417af 1624 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1625 if (data->dcb.BaudRate == std_baudrates[i].index) {
067417af
ML		 1626 config->baudrate = std_baudrates[i].value;
1627 break;
1628 }
1629 }
1630
1631 if (i == NUM_STD_BAUDRATES)
1632 /* BaudRate field can be either an index or a custom baud rate. */
e33ab9aa 1633 config->baudrate = data->dcb.BaudRate;
067417af 1634
e33ab9aa 1635 config->bits = data->dcb.ByteSize;
067417af 1636
e33ab9aa
ML		 1637 if (data->dcb.fParity)
1638 switch (data->dcb.Parity) {
067417af
ML		 1639 case NOPARITY:
1640 config->parity = SP_PARITY_NONE;
1641 break;
e432ce60
ML		 1642 case ODDPARITY:
1643 config->parity = SP_PARITY_ODD;
1644 break;
067417af
ML		 1645 case EVENPARITY:
1646 config->parity = SP_PARITY_EVEN;
1647 break;
e432ce60
ML		 1648 case MARKPARITY:
1649 config->parity = SP_PARITY_MARK;
1650 break;
1651 case SPACEPARITY:
1652 config->parity = SP_PARITY_SPACE;
067417af
ML		 1653 break;
1654 default:
1655 config->parity = -1;
1656 }
1657 else
1658 config->parity = SP_PARITY_NONE;
1659
e33ab9aa 1660 switch (data->dcb.StopBits) {
067417af
ML		 1661 case ONESTOPBIT:
1662 config->stopbits = 1;
1663 break;
1664 case TWOSTOPBITS:
1665 config->stopbits = 2;
1666 break;
1667 default:
1668 config->stopbits = -1;
1669 }
1670
e33ab9aa 1671 switch (data->dcb.fRtsControl) {
eac329d2
UH		 1672 case RTS_CONTROL_DISABLE:
1673 config->rts = SP_RTS_OFF;
1674 break;
1675 case RTS_CONTROL_ENABLE:
1676 config->rts = SP_RTS_ON;
1677 break;
1678 case RTS_CONTROL_HANDSHAKE:
1679 config->rts = SP_RTS_FLOW_CONTROL;
1680 break;
1681 default:
1682 config->rts = -1;
067417af
ML		 1683 }
1684
e33ab9aa 1685 config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af 1686
e33ab9aa 1687 switch (data->dcb.fDtrControl) {
eac329d2
UH		 1688 case DTR_CONTROL_DISABLE:
1689 config->dtr = SP_DTR_OFF;
1690 break;
1691 case DTR_CONTROL_ENABLE:
1692 config->dtr = SP_DTR_ON;
1693 break;
1694 case DTR_CONTROL_HANDSHAKE:
1695 config->dtr = SP_DTR_FLOW_CONTROL;
1696 break;
1697 default:
1698 config->dtr = -1;
067417af
ML		 1699 }
1700
e33ab9aa
ML		 1701 config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
1702
c6754b45
ML		 1703 if (data->dcb.fInX) {
1704 if (data->dcb.fOutX)
1705 config->xon_xoff = SP_XONXOFF_INOUT;
1706 else
1707 config->xon_xoff = SP_XONXOFF_IN;
1708 } else {
1709 if (data->dcb.fOutX)
1710 config->xon_xoff = SP_XONXOFF_OUT;
1711 else
1712 config->xon_xoff = SP_XONXOFF_DISABLED;
1713 }
1714
e33ab9aa
ML		 1715#else // !_WIN32
1716
1717 if (tcgetattr(port->fd, &data->term) < 0)
c33efc48 1718 RETURN_FAIL("tcgetattr() failed");
e33ab9aa
ML		 1719
1720 if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0)
c33efc48 1721 RETURN_FAIL("TIOCMGET ioctl failed");
40978c2b
ML		 1722
1723#ifdef USE_TERMIOX
bd791fe1 1724 int ret = get_flow(port->fd, data);
68ec29db
ML		 1725
1726 if (ret == SP_ERR_FAIL && errno == EINVAL)
1727 data->termiox_supported = 0;
1728 else if (ret < 0)
c33efc48 1729 RETURN_CODEVAL(ret);
68ec29db
ML		 1730 else
1731 data->termiox_supported = 1;
1732#else
1733 data->termiox_supported = 0;
40978c2b
ML		 1734#endif
1735
067417af 1736 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
e33ab9aa 1737 if (cfgetispeed(&data->term) == std_baudrates[i].index) {
067417af
ML		 1738 config->baudrate = std_baudrates[i].value;
1739 break;
1740 }
1741 }
1742
31b3a8f5
MH		 1743 if (i == NUM_STD_BAUDRATES) {
1744#ifdef __APPLE__
1745 config->baudrate = (int)data->term.c_ispeed;
5cea279a 1746#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1747 TRY(get_baudrate(port->fd, &config->baudrate));
31b3a8f5 1748#else
067417af 1749 config->baudrate = -1;
31b3a8f5
MH		 1750#endif
1751 }
067417af 1752
e33ab9aa 1753 switch (data->term.c_cflag & CSIZE) {
067417af
ML		 1754 case CS8:
1755 config->bits = 8;
1756 break;
1757 case CS7:
1758 config->bits = 7;
1759 break;
1760 case CS6:
1761 config->bits = 6;
1762 break;
1763 case CS5:
1764 config->bits = 5;
1765 break;
1766 default:
1767 config->bits = -1;
1768 }
1769
e33ab9aa 1770 if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR))
067417af 1771 config->parity = SP_PARITY_NONE;
e33ab9aa 1772 else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR))
067417af 1773 config->parity = -1;
c3e05092 1774#ifdef CMSPAR
e432ce60
ML		 1775 else if (data->term.c_cflag & CMSPAR)
1776 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE;
c3e05092 1777#endif
067417af 1778 else
e33ab9aa 1779 config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN;
067417af 1780
e33ab9aa 1781 config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1;
067417af 1782
e33ab9aa 1783 if (data->term.c_cflag & CRTSCTS) {
067417af
ML		 1784 config->rts = SP_RTS_FLOW_CONTROL;
1785 config->cts = SP_CTS_FLOW_CONTROL;
1786 } else {
bd791fe1 1787 if (data->termiox_supported && data->rts_flow)
40978c2b
ML		 1788 config->rts = SP_RTS_FLOW_CONTROL;
1789 else
1790 config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF;
1791
bd791fe1 1792 config->cts = (data->termiox_supported && data->cts_flow) ?
68ec29db 1793 SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE;
067417af
ML		 1794 }
1795
bd791fe1 1796 if (data->termiox_supported && data->dtr_flow)
40978c2b
ML		 1797 config->dtr = SP_DTR_FLOW_CONTROL;
1798 else
1799 config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF;
1800
bd791fe1 1801 config->dsr = (data->termiox_supported && data->dsr_flow) ?
68ec29db 1802 SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE;
705bdc69 1803
e29b93a5
ML		 1804 if (data->term.c_iflag & IXOFF) {
1805 if (data->term.c_iflag & IXON)
1806 config->xon_xoff = SP_XONXOFF_INOUT;
1807 else
1808 config->xon_xoff = SP_XONXOFF_IN;
1809 } else {
1810 if (data->term.c_iflag & IXON)
1811 config->xon_xoff = SP_XONXOFF_OUT;
1812 else
1813 config->xon_xoff = SP_XONXOFF_DISABLED;
1814 }
067417af
ML		 1815#endif
1816
c33efc48 1817 RETURN_OK();
067417af
ML		 1818}
1819
7a6d2196 1820static enum sp_return set_config(struct sp_port *port, struct port_data *data,
eb6ed20f 1821 const struct sp_port_config *config)
18fc2dd1 1822{
e33ab9aa 1823 unsigned int i;
31b3a8f5
MH		 1824#ifdef __APPLE__
1825 BAUD_TYPE baud_nonstd;
1826
1827 baud_nonstd = B0;
1828#endif
5cea279a 1829#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 1830 int baud_nonstd = 0;
1831#endif
18fc2dd1 1832
c33efc48
ML		 1833 TRACE("%p, %p, %p", port, data, config);
1834
7890cef6 1835 DEBUG_FMT("Setting configuration for port %s", port->name);
ea667be7 1836
e33ab9aa 1837#ifdef _WIN32
eac329d2 1838 if (config->baudrate >= 0) {
e33ab9aa
ML		 1839 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1840 if (config->baudrate == std_baudrates[i].value) {
1841 data->dcb.BaudRate = std_baudrates[i].index;
1842 break;
1843 }
1844 }
18fc2dd1 1845
e33ab9aa
ML		 1846 if (i == NUM_STD_BAUDRATES)
1847 data->dcb.BaudRate = config->baudrate;
1848 }
18fc2dd1 1849
e33ab9aa
ML		 1850 if (config->bits >= 0)
1851 data->dcb.ByteSize = config->bits;
1852
1853 if (config->parity >= 0) {
1854 switch (config->parity) {
e33ab9aa
ML		 1855 case SP_PARITY_NONE:
1856 data->dcb.Parity = NOPARITY;
1857 break;
e432ce60
ML		 1858 case SP_PARITY_ODD:
1859 data->dcb.Parity = ODDPARITY;
1860 break;
e33ab9aa
ML		 1861 case SP_PARITY_EVEN:
1862 data->dcb.Parity = EVENPARITY;
1863 break;
e432ce60
ML		 1864 case SP_PARITY_MARK:
1865 data->dcb.Parity = MARKPARITY;
1866 break;
1867 case SP_PARITY_SPACE:
1868 data->dcb.Parity = SPACEPARITY;
e33ab9aa
ML		 1869 break;
1870 default:
c33efc48 1871 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa 1872 }
18fc2dd1
ML		 1873 }
1874
e33ab9aa
ML		 1875 if (config->stopbits >= 0) {
1876 switch (config->stopbits) {
1877 /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */
1878 case 1:
1879 data->dcb.StopBits = ONESTOPBIT;
1880 break;
1881 case 2:
1882 data->dcb.StopBits = TWOSTOPBITS;
1883 break;
1884 default:
c33efc48 1885 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting");
e33ab9aa
ML		 1886 }
1887 }
1888
1889 if (config->rts >= 0) {
1890 switch (config->rts) {
1891 case SP_RTS_OFF:
1892 data->dcb.fRtsControl = RTS_CONTROL_DISABLE;
1893 break;
1894 case SP_RTS_ON:
1895 data->dcb.fRtsControl = RTS_CONTROL_ENABLE;
1896 break;
1897 case SP_RTS_FLOW_CONTROL:
1898 data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE;
1899 break;
1900 default:
c33efc48 1901 RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting");
e33ab9aa
ML		 1902 }
1903 }
1904
1905 if (config->cts >= 0) {
1906 switch (config->cts) {
1907 case SP_CTS_IGNORE:
1908 data->dcb.fOutxCtsFlow = FALSE;
1909 break;
1910 case SP_CTS_FLOW_CONTROL:
1911 data->dcb.fOutxCtsFlow = TRUE;
1912 break;
1913 default:
c33efc48 1914 RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting");
e33ab9aa
ML		 1915 }
1916 }
1917
1918 if (config->dtr >= 0) {
1919 switch (config->dtr) {
1920 case SP_DTR_OFF:
1921 data->dcb.fDtrControl = DTR_CONTROL_DISABLE;
1922 break;
1923 case SP_DTR_ON:
1924 data->dcb.fDtrControl = DTR_CONTROL_ENABLE;
1925 break;
1926 case SP_DTR_FLOW_CONTROL:
1927 data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE;
1928 break;
1929 default:
c33efc48 1930 RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting");
e33ab9aa
ML		 1931 }
1932 }
1933
1934 if (config->dsr >= 0) {
1935 switch (config->dsr) {
1936 case SP_DSR_IGNORE:
1937 data->dcb.fOutxDsrFlow = FALSE;
1938 break;
1939 case SP_DSR_FLOW_CONTROL:
1940 data->dcb.fOutxDsrFlow = TRUE;
1941 break;
1942 default:
c33efc48 1943 RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting");
e33ab9aa 1944 }
18fc2dd1
ML		 1945 }
1946
e33ab9aa
ML		 1947 if (config->xon_xoff >= 0) {
1948 switch (config->xon_xoff) {
1949 case SP_XONXOFF_DISABLED:
1950 data->dcb.fInX = FALSE;
1951 data->dcb.fOutX = FALSE;
1952 break;
1953 case SP_XONXOFF_IN:
1954 data->dcb.fInX = TRUE;
1955 data->dcb.fOutX = FALSE;
1956 break;
1957 case SP_XONXOFF_OUT:
1958 data->dcb.fInX = FALSE;
1959 data->dcb.fOutX = TRUE;
1960 break;
1961 case SP_XONXOFF_INOUT:
1962 data->dcb.fInX = TRUE;
1963 data->dcb.fOutX = TRUE;
1964 break;
1965 default:
c33efc48 1966 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 1967 }
1968 }
1969
1970 if (!SetCommState(port->hdl, &data->dcb))
c33efc48 1971 RETURN_FAIL("SetCommState() failed");
e33ab9aa 1972
31b3a8f5 1973#else /* !_WIN32 */
e33ab9aa 1974
7a6d2196
ML		 1975 int controlbits;
1976
eac329d2 1977 if (config->baudrate >= 0) {
e33ab9aa
ML		 1978 for (i = 0; i < NUM_STD_BAUDRATES; i++) {
1979 if (config->baudrate == std_baudrates[i].value) {
1980 if (cfsetospeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1981 RETURN_FAIL("cfsetospeed() failed");
e33ab9aa
ML		 1982
1983 if (cfsetispeed(&data->term, std_baudrates[i].index) < 0)
c33efc48 1984 RETURN_FAIL("cfsetispeed() failed");
e33ab9aa
ML		 1985 break;
1986 }
1987 }
1988
31b3a8f5
MH		 1989 /* Non-standard baud rate */
1990 if (i == NUM_STD_BAUDRATES) {
1991#ifdef __APPLE__
24abdb68 1992 /* Set "dummy" baud rate. */
31b3a8f5 1993 if (cfsetspeed(&data->term, B9600) < 0)
c33efc48 1994 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 1995 baud_nonstd = config->baudrate;
5cea279a 1996#elif defined(USE_TERMIOS_SPEED)
7a6d2196 1997 baud_nonstd = 1;
31b3a8f5 1998#else
c33efc48 1999 RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported");
31b3a8f5
MH		 2000#endif
2001 }
e33ab9aa
ML		 2002 }
2003
2004 if (config->bits >= 0) {
2005 data->term.c_cflag &= ~CSIZE;
2006 switch (config->bits) {
2007 case 8:
2008 data->term.c_cflag |= CS8;
2009 break;
2010 case 7:
2011 data->term.c_cflag |= CS7;
2012 break;
2013 case 6:
2014 data->term.c_cflag |= CS6;
2015 break;
23922313
UH		 2016 case 5:
2017 data->term.c_cflag |= CS5;
2018 break;
e33ab9aa 2019 default:
c33efc48 2020 RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting");
e33ab9aa
ML		 2021 }
2022 }
2023
2024 if (config->parity >= 0) {
2025 data->term.c_iflag &= ~IGNPAR;
c3e05092
UH		 2026 data->term.c_cflag &= ~(PARENB | PARODD);
2027#ifdef CMSPAR
2028 data->term.c_cflag &= ~CMSPAR;
2029#endif
e33ab9aa
ML		 2030 switch (config->parity) {
2031 case SP_PARITY_NONE:
2032 data->term.c_iflag |= IGNPAR;
2033 break;
2034 case SP_PARITY_EVEN:
2035 data->term.c_cflag |= PARENB;
2036 break;
2037 case SP_PARITY_ODD:
2038 data->term.c_cflag |= PARENB | PARODD;
2039 break;
afb518f0 2040#ifdef CMSPAR
e432ce60 2041 case SP_PARITY_MARK:
c3e05092 2042 data->term.c_cflag |= PARENB | PARODD;
c3e05092 2043 data->term.c_cflag |= CMSPAR;
e432ce60
ML		 2044 break;
2045 case SP_PARITY_SPACE:
c3e05092 2046 data->term.c_cflag |= PARENB;
c3e05092 2047 data->term.c_cflag |= CMSPAR;
e432ce60 2048 break;
afb518f0
ML		 2049#else
2050 case SP_PARITY_MARK:
2051 case SP_PARITY_SPACE:
2052 RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported");
2053#endif
e33ab9aa 2054 default:
c33efc48 2055 RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting");
e33ab9aa
ML		 2056 }
2057 }
2058
2059 if (config->stopbits >= 0) {
2060 data->term.c_cflag &= ~CSTOPB;
2061 switch (config->stopbits) {
2062 case 1:
2063 data->term.c_cflag &= ~CSTOPB;
2064 break;
2065 case 2:
2066 data->term.c_cflag |= CSTOPB;
2067 break;
2068 default:
c33efc48 2069 RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting");
e33ab9aa
ML		 2070 }
2071 }
2072
eac329d2 2073 if (config->rts >= 0 || config->cts >= 0) {
68ec29db 2074 if (data->termiox_supported) {
bd791fe1 2075 data->rts_flow = data->cts_flow = 0;
68ec29db
ML		 2076 switch (config->rts) {
2077 case SP_RTS_OFF:
2078 case SP_RTS_ON:
2079 controlbits = TIOCM_RTS;
2080 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2081 RETURN_FAIL("Setting RTS signal level failed");
68ec29db
ML		 2082 break;
2083 case SP_RTS_FLOW_CONTROL:
bd791fe1 2084 data->rts_flow = 1;
68ec29db
ML		 2085 break;
2086 default:
2087 break;
e33ab9aa 2088 }
68ec29db 2089 if (config->cts == SP_CTS_FLOW_CONTROL)
bd791fe1 2090 data->cts_flow = 1;
e33ab9aa 2091
bd791fe1 2092 if (data->rts_flow && data->cts_flow)
e33ab9aa 2093 data->term.c_iflag |= CRTSCTS;
68ec29db
ML		 2094 else
2095 data->term.c_iflag &= ~CRTSCTS;
2096 } else {
2097 /* Asymmetric use of RTS/CTS not supported. */
2098 if (data->term.c_iflag & CRTSCTS) {
2099 /* Flow control can only be disabled for both RTS & CTS together. */
2100 if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) {
2101 if (config->cts != SP_CTS_IGNORE)
c33efc48 2102 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db
ML		 2103 }
2104 if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) {
2105 if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL)
c33efc48 2106 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together");
68ec29db 2107 }
e33ab9aa 2108 } else {
68ec29db
ML		 2109 /* Flow control can only be enabled for both RTS & CTS together. */
2110 if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) ||
2111 ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL)))
c33efc48 2112 RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together");
68ec29db
ML		 2113 }
2114
2115 if (config->rts >= 0) {
2116 if (config->rts == SP_RTS_FLOW_CONTROL) {
2117 data->term.c_iflag |= CRTSCTS;
2118 } else {
2119 controlbits = TIOCM_RTS;
2120 if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC,
2121 &controlbits) < 0)
c33efc48 2122 RETURN_FAIL("Setting RTS signal level failed");
68ec29db 2123 }
e33ab9aa
ML		 2124 }
2125 }
2126 }
2127
eac329d2 2128 if (config->dtr >= 0 || config->dsr >= 0) {
68ec29db 2129 if (data->termiox_supported) {
bd791fe1 2130 data->dtr_flow = data->dsr_flow = 0;
68ec29db
ML		 2131 switch (config->dtr) {
2132 case SP_DTR_OFF:
2133 case SP_DTR_ON:
2134 controlbits = TIOCM_DTR;
2135 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0)
c33efc48 2136 RETURN_FAIL("Setting DTR signal level failed");
68ec29db
ML		 2137 break;
2138 case SP_DTR_FLOW_CONTROL:
bd791fe1 2139 data->dtr_flow = 1;
68ec29db
ML		 2140 break;
2141 default:
2142 break;
2143 }
2144 if (config->dsr == SP_DSR_FLOW_CONTROL)
bd791fe1 2145 data->dsr_flow = 1;
68ec29db
ML		 2146 } else {
2147 /* DTR/DSR flow control not supported. */
2148 if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL)
c33efc48 2149 RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported");
e33ab9aa 2150
68ec29db
ML		 2151 if (config->dtr >= 0) {
2152 controlbits = TIOCM_DTR;
2153 if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC,
2154 &controlbits) < 0)
c33efc48 2155 RETURN_FAIL("Setting DTR signal level failed");
68ec29db 2156 }
e33ab9aa
ML		 2157 }
2158 }
2159
2160 if (config->xon_xoff >= 0) {
2161 data->term.c_iflag &= ~(IXON | IXOFF | IXANY);
2162 switch (config->xon_xoff) {
2163 case SP_XONXOFF_DISABLED:
2164 break;
2165 case SP_XONXOFF_IN:
2166 data->term.c_iflag |= IXOFF;
2167 break;
2168 case SP_XONXOFF_OUT:
2169 data->term.c_iflag |= IXON | IXANY;
2170 break;
2171 case SP_XONXOFF_INOUT:
2172 data->term.c_iflag |= IXON | IXOFF | IXANY;
2173 break;
2174 default:
c33efc48 2175 RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting");
e33ab9aa
ML		 2176 }
2177 }
2178
3f5c06d0 2179 if (tcsetattr(port->fd, TCSANOW, &data->term) < 0)
c33efc48 2180 RETURN_FAIL("tcsetattr() failed");
31b3a8f5
MH		 2181
2182#ifdef __APPLE__
2183 if (baud_nonstd != B0) {
2184 if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1)
c33efc48 2185 RETURN_FAIL("IOSSIOSPEED ioctl failed");
dc422c04
UH		 2186 /*
2187 * Set baud rates in data->term to correct, but incompatible
2188 * with tcsetattr() value, same as delivered by tcgetattr().
2189 */
31b3a8f5 2190 if (cfsetspeed(&data->term, baud_nonstd) < 0)
c33efc48 2191 RETURN_FAIL("cfsetspeed() failed");
31b3a8f5 2192 }
7a6d2196 2193#elif defined(__linux__)
5cea279a 2194#ifdef USE_TERMIOS_SPEED
7a6d2196
ML		 2195 if (baud_nonstd)
2196 TRY(set_baudrate(port->fd, config->baudrate));
5cea279a 2197#endif
40978c2b 2198#ifdef USE_TERMIOX
68ec29db 2199 if (data->termiox_supported)
bd791fe1 2200 TRY(set_flow(port->fd, data));
40978c2b 2201#endif
7a6d2196 2202#endif
31b3a8f5
MH		 2203
2204#endif /* !_WIN32 */
e33ab9aa 2205
c33efc48 2206 RETURN_OK();
e33ab9aa
ML		 2207}
2208
970f279a 2209SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr)
9b1502ef 2210{
59131d60 2211 struct sp_port_config *config;
9b1502ef 2212
00d8c56d
UH		 2213 TRACE("%p", config_ptr);
2214
9b1502ef
ML		 2215 if (!config_ptr)
2216 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
2217
59131d60
ML		 2218 *config_ptr = NULL;
2219
2220 if (!(config = malloc(sizeof(struct sp_port_config))))
dc422c04 2221 RETURN_ERROR(SP_ERR_MEM, "Config malloc failed");
9b1502ef 2222
59131d60
ML		 2223 config->baudrate = -1;
2224 config->bits = -1;
2225 config->parity = -1;
2226 config->stopbits = -1;
2227 config->rts = -1;
2228 config->cts = -1;
2229 config->dtr = -1;
2230 config->dsr = -1;
2231
2232 *config_ptr = config;
2233
9b1502ef
ML		 2234 RETURN_OK();
2235}
2236
970f279a 2237SP_API void sp_free_config(struct sp_port_config *config)
9b1502ef
ML		 2238{
2239 TRACE("%p", config);
2240
2241 if (!config)
2242 DEBUG("Null config");
2243 else
2244 free(config);
2245
2246 RETURN();
2247}
2248
970f279a
AJ		 2249SP_API enum sp_return sp_get_config(struct sp_port *port,
2250 struct sp_port_config *config)
70cd37de
ML		 2251{
2252 struct port_data data;
2253
2254 TRACE("%p, %p", port, config);
2255
2256 CHECK_OPEN_PORT();
2257
2258 if (!config)
9b1502ef 2259 RETURN_ERROR(SP_ERR_ARG, "Null config");
70cd37de
ML		 2260
2261 TRY(get_config(port, &data, config));
2262
2263 RETURN_OK();
2264}
2265
970f279a
AJ		 2266SP_API enum sp_return sp_set_config(struct sp_port *port,
2267 const struct sp_port_config *config)
e33ab9aa 2268{
8f189c4c 2269 struct port_data data;
e33ab9aa
ML		 2270 struct sp_port_config prev_config;
2271
c33efc48
ML		 2272 TRACE("%p, %p", port, config);
2273
dec10e31 2274 CHECK_OPEN_PORT();
823690ae
ML		 2275
2276 if (!config)
c33efc48 2277 RETURN_ERROR(SP_ERR_ARG, "Null config");
823690ae 2278
e33ab9aa
ML		 2279 TRY(get_config(port, &data, &prev_config));
2280 TRY(set_config(port, &data, config));
74510d4b 2281
c33efc48 2282 RETURN_OK();
74510d4b
ML		 2283}
2284
9b1502ef 2285#define CREATE_ACCESSORS(x, type) \
970f279a 2286SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \
8f189c4c 2287 struct port_data data; \
e33ab9aa 2288 struct sp_port_config config; \
c33efc48 2289 TRACE("%p, %d", port, x); \
dec10e31 2290 CHECK_OPEN_PORT(); \
e33ab9aa
ML		 2291 TRY(get_config(port, &data, &config)); \
2292 config.x = x; \
2293 TRY(set_config(port, &data, &config)); \
c33efc48 2294 RETURN_OK(); \
9b1502ef 2295} \
970f279a
AJ		 2296SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \
2297 type *x) { \
00d8c56d 2298 TRACE("%p, %p", config, x); \
6aad5bdd
UH		 2299 if (!x) \
2300 RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \
9b1502ef
ML		 2301 if (!config) \
2302 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2303 *x = config->x; \
2304 RETURN_OK(); \
2305} \
970f279a
AJ		 2306SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \
2307 type x) { \
9b1502ef
ML		 2308 TRACE("%p, %d", config, x); \
2309 if (!config) \
2310 RETURN_ERROR(SP_ERR_ARG, "Null config"); \
2311 config->x = x; \
2312 RETURN_OK(); \
9069c2fb
ML		 2313}
2314
9b1502ef
ML		 2315CREATE_ACCESSORS(baudrate, int)
2316CREATE_ACCESSORS(bits, int)
2317CREATE_ACCESSORS(parity, enum sp_parity)
2318CREATE_ACCESSORS(stopbits, int)
2319CREATE_ACCESSORS(rts, enum sp_rts)
2320CREATE_ACCESSORS(cts, enum sp_cts)
2321CREATE_ACCESSORS(dtr, enum sp_dtr)
2322CREATE_ACCESSORS(dsr, enum sp_dsr)
2323CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff)
2324
970f279a
AJ		 2325SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config,
2326 enum sp_flowcontrol flowcontrol)
e33ab9aa 2327{
9b1502ef
ML		 2328 if (!config)
2329 RETURN_ERROR(SP_ERR_ARG, "Null configuration");
dec10e31
ML		 2330
2331 if (flowcontrol > SP_FLOWCONTROL_DTRDSR)
2332 RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting");
823690ae 2333
e33ab9aa 2334 if (flowcontrol == SP_FLOWCONTROL_XONXOFF)
9b1502ef 2335 config->xon_xoff = SP_XONXOFF_INOUT;
e33ab9aa 2336 else
9b1502ef 2337 config->xon_xoff = SP_XONXOFF_DISABLED;
e33ab9aa
ML		 2338
2339 if (flowcontrol == SP_FLOWCONTROL_RTSCTS) {
9b1502ef
ML		 2340 config->rts = SP_RTS_FLOW_CONTROL;
2341 config->cts = SP_CTS_FLOW_CONTROL;
e33ab9aa 2342 } else {
9b1502ef
ML		 2343 if (config->rts == SP_RTS_FLOW_CONTROL)
2344 config->rts = SP_RTS_ON;
2345 config->cts = SP_CTS_IGNORE;
e33ab9aa
ML		 2346 }
2347
2348 if (flowcontrol == SP_FLOWCONTROL_DTRDSR) {
9b1502ef
ML		 2349 config->dtr = SP_DTR_FLOW_CONTROL;
2350 config->dsr = SP_DSR_FLOW_CONTROL;
e33ab9aa 2351 } else {
9b1502ef
ML		 2352 if (config->dtr == SP_DTR_FLOW_CONTROL)
2353 config->dtr = SP_DTR_ON;
2354 config->dsr = SP_DSR_IGNORE;
e33ab9aa
ML		 2355 }
2356
9b1502ef
ML		 2357 RETURN_OK();
2358}
2359
970f279a
AJ		 2360SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port,
2361 enum sp_flowcontrol flowcontrol)
9b1502ef
ML		 2362{
2363 struct port_data data;
2364 struct sp_port_config config;
2365
2366 TRACE("%p, %d", port, flowcontrol);
2367
2368 CHECK_OPEN_PORT();
2369
2370 TRY(get_config(port, &data, &config));
2371
2372 TRY(sp_set_config_flowcontrol(&config, flowcontrol));
2373
e33ab9aa
ML		 2374 TRY(set_config(port, &data, &config));
2375
c33efc48 2376 RETURN_OK();
e33ab9aa
ML		 2377}
2378
970f279a
AJ		 2379SP_API enum sp_return sp_get_signals(struct sp_port *port,
2380 enum sp_signal *signals)
8cf7c697 2381{
c33efc48
ML		 2382 TRACE("%p, %p", port, signals);
2383
dec10e31 2384 CHECK_OPEN_PORT();
8cf7c697
ML		 2385
2386 if (!signals)
c33efc48 2387 RETURN_ERROR(SP_ERR_ARG, "Null result pointer");
8cf7c697 2388
7890cef6 2389 DEBUG_FMT("Getting control signals for port %s", port->name);
ea667be7 2390
8cf7c697
ML		 2391 *signals = 0;
2392#ifdef _WIN32
2393 DWORD bits;
2394 if (GetCommModemStatus(port->hdl, &bits) == 0)
c33efc48 2395 RETURN_FAIL("GetCommModemStatus() failed");
8cf7c697
ML		 2396 if (bits & MS_CTS_ON)
2397 *signals |= SP_SIG_CTS;
2398 if (bits & MS_DSR_ON)
2399 *signals |= SP_SIG_DSR;
8cf7c697 2400 if (bits & MS_RLSD_ON)
a6cda1e8
ML		 2401 *signals |= SP_SIG_DCD;
2402 if (bits & MS_RING_ON)
8cf7c697
ML		 2403 *signals |= SP_SIG_RI;
2404#else
2405 int bits;
2406 if (ioctl(port->fd, TIOCMGET, &bits) < 0)
c33efc48 2407 RETURN_FAIL("TIOCMGET ioctl failed");
8cf7c697
ML		 2408 if (bits & TIOCM_CTS)
2409 *signals |= SP_SIG_CTS;
2410 if (bits & TIOCM_DSR)
2411 *signals |= SP_SIG_DSR;
2412 if (bits & TIOCM_CAR)
2413 *signals |= SP_SIG_DCD;
2414 if (bits & TIOCM_RNG)
2415 *signals |= SP_SIG_RI;
2416#endif
c33efc48 2417 RETURN_OK();
8cf7c697
ML		 2418}
2419
970f279a 2420SP_API enum sp_return sp_start_break(struct sp_port *port)
90cc3ee6 2421{
c33efc48
ML		 2422 TRACE("%p", port);
2423
dec10e31 2424 CHECK_OPEN_PORT();
90cc3ee6
ML		 2425#ifdef _WIN32
2426 if (SetCommBreak(port->hdl) == 0)
c33efc48 2427 RETURN_FAIL("SetCommBreak() failed");
90cc3ee6
ML		 2428#else
2429 if (ioctl(port->fd, TIOCSBRK, 1) < 0)
c33efc48 2430 RETURN_FAIL("TIOCSBRK ioctl failed");
90cc3ee6
ML		 2431#endif
2432
c33efc48 2433 RETURN_OK();
90cc3ee6
ML		 2434}
2435
970f279a 2436SP_API enum sp_return sp_end_break(struct sp_port *port)
90cc3ee6 2437{
c33efc48
ML		 2438 TRACE("%p", port);
2439
dec10e31 2440 CHECK_OPEN_PORT();
90cc3ee6
ML		 2441#ifdef _WIN32
2442 if (ClearCommBreak(port->hdl) == 0)
c33efc48 2443 RETURN_FAIL("ClearCommBreak() failed");
90cc3ee6
ML		 2444#else
2445 if (ioctl(port->fd, TIOCCBRK, 1) < 0)
c33efc48 2446 RETURN_FAIL("TIOCCBRK ioctl failed");
90cc3ee6
ML		 2447#endif
2448
c33efc48 2449 RETURN_OK();
90cc3ee6
ML		 2450}
2451
970f279a 2452SP_API int sp_last_error_code(void)
74510d4b 2453{
7890cef6 2454 TRACE_VOID();
74510d4b 2455#ifdef _WIN32
9caa2e86 2456 RETURN_INT(GetLastError());
74510d4b 2457#else
9caa2e86 2458 RETURN_INT(errno);
74510d4b
ML		 2459#endif
2460}
2461
970f279a 2462SP_API char *sp_last_error_message(void)
74510d4b 2463{
7890cef6 2464 TRACE_VOID();
c33efc48 2465
74510d4b 2466#ifdef _WIN32
9a0c4bbd 2467 TCHAR *message;
74510d4b
ML		 2468 DWORD error = GetLastError();
2469
9a0c4bbd 2470 DWORD length = FormatMessage(
74510d4b
ML		 2471 FORMAT_MESSAGE_ALLOCATE_BUFFER |
2472 FORMAT_MESSAGE_FROM_SYSTEM |
2473 FORMAT_MESSAGE_IGNORE_INSERTS,
2474 NULL,
2475 error,
2476 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
2477 (LPTSTR) &message,
2478 0, NULL );
2479
9a0c4bbd
ML		 2480 if (length >= 2 && message[length - 2] == '\r')
2481 message[length - 2] = '\0';
2482
9caa2e86 2483 RETURN_STRING(message);
74510d4b 2484#else
9caa2e86 2485 RETURN_STRING(strerror(errno));
74510d4b
ML		 2486#endif
2487}
2488
970f279a 2489SP_API void sp_free_error_message(char *message)
74510d4b 2490{
c33efc48
ML		 2491 TRACE("%s", message);
2492
74510d4b
ML		 2493#ifdef _WIN32
2494 LocalFree(message);
64eec30d
ML		 2495#else
2496 (void)message;
74510d4b 2497#endif
c33efc48
ML		 2498
2499 RETURN();
74510d4b 2500}
863b35e6 2501
970f279a 2502SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...))
863b35e6 2503{
c33efc48
ML		 2504 TRACE("%p", handler);
2505
863b35e6 2506 sp_debug_handler = handler;
c33efc48
ML		 2507
2508 RETURN();
863b35e6
ML		 2509}
2510
970f279a 2511SP_API void sp_default_debug_handler(const char *format, ...)
863b35e6
ML		 2512{
2513 va_list args;
2514 va_start(args, format);
2515 if (getenv("LIBSERIALPORT_DEBUG")) {
dd7742fb 2516 fputs("sp: ", stderr);
863b35e6
ML		 2517 vfprintf(stderr, format, args);
2518 }
2519 va_end(args);
2520}
524b0e14 2521
970f279a 2522SP_API int sp_get_major_package_version(void)
524b0e14
UH		 2523{
2524 return SP_PACKAGE_VERSION_MAJOR;
2525}
2526
970f279a 2527SP_API int sp_get_minor_package_version(void)
524b0e14
UH		 2528{
2529 return SP_PACKAGE_VERSION_MINOR;
2530}
2531
970f279a 2532SP_API int sp_get_micro_package_version(void)
524b0e14
UH		 2533{
2534 return SP_PACKAGE_VERSION_MICRO;
2535}
2536
970f279a 2537SP_API const char *sp_get_package_version_string(void)
524b0e14
UH		 2538{
2539 return SP_PACKAGE_VERSION_STRING;
2540}
2541
970f279a 2542SP_API int sp_get_current_lib_version(void)
524b0e14
UH		 2543{
2544 return SP_LIB_VERSION_CURRENT;
2545}
2546
970f279a 2547SP_API int sp_get_revision_lib_version(void)
524b0e14
UH		 2548{
2549 return SP_LIB_VERSION_REVISION;
2550}
2551
970f279a 2552SP_API int sp_get_age_lib_version(void)
524b0e14
UH		 2553{
2554 return SP_LIB_VERSION_AGE;
2555}
2556
970f279a 2557SP_API const char *sp_get_lib_version_string(void)
524b0e14
UH		 2558{
2559 return SP_LIB_VERSION_STRING;
2560}
2561
2562/** @} */
Serial port access library