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