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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) 2010-2015 Uwe Hermann <uwe@hermann-uwe.de> | |
6 | * Copyright (C) 2013-2015 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 <config.h> | |
25 | #include "libserialport.h" | |
26 | #include "libserialport_internal.h" | |
27 | ||
28 | static const struct std_baudrate std_baudrates[] = { | |
29 | #ifdef _WIN32 | |
30 | /* | |
31 | * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to | |
32 | * have documented CBR_* macros. | |
33 | */ | |
34 | BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800), | |
35 | BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600), | |
36 | BAUD(115200), BAUD(128000), BAUD(256000), | |
37 | #else | |
38 | BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200), | |
39 | BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800), | |
40 | BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200), | |
41 | BAUD(230400), | |
42 | #if !defined(__APPLE__) && !defined(__OpenBSD__) | |
43 | BAUD(460800), | |
44 | #endif | |
45 | #endif | |
46 | }; | |
47 | ||
48 | #define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates) | |
49 | ||
50 | void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler; | |
51 | ||
52 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, | |
53 | struct sp_port_config *config); | |
54 | ||
55 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
56 | const struct sp_port_config *config); | |
57 | ||
58 | SP_API enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) | |
59 | { | |
60 | struct sp_port *port; | |
61 | #ifndef NO_PORT_METADATA | |
62 | enum sp_return ret; | |
63 | #endif | |
64 | int len; | |
65 | ||
66 | TRACE("%s, %p", portname, port_ptr); | |
67 | ||
68 | if (!port_ptr) | |
69 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
70 | ||
71 | *port_ptr = NULL; | |
72 | ||
73 | if (!portname) | |
74 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); | |
75 | ||
76 | DEBUG_FMT("Building structure for port %s", portname); | |
77 | ||
78 | #if !defined(_WIN32) && defined(HAVE_REALPATH) | |
79 | /* | |
80 | * get_port_details() below tries to be too smart and figure out | |
81 | * some transport properties from the port name which breaks with | |
82 | * symlinks. Therefore we canonicalize the portname first. | |
83 | */ | |
84 | char pathbuf[PATH_MAX + 1]; | |
85 | char *res = realpath(portname, pathbuf); | |
86 | if (!res) | |
87 | RETURN_ERROR(SP_ERR_ARG, "Could not retrieve realpath behind port name"); | |
88 | ||
89 | portname = pathbuf; | |
90 | #endif | |
91 | ||
92 | if (!(port = malloc(sizeof(struct sp_port)))) | |
93 | RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed"); | |
94 | ||
95 | len = strlen(portname) + 1; | |
96 | ||
97 | if (!(port->name = malloc(len))) { | |
98 | free(port); | |
99 | RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed"); | |
100 | } | |
101 | ||
102 | memcpy(port->name, portname, len); | |
103 | ||
104 | #ifdef _WIN32 | |
105 | port->usb_path = NULL; | |
106 | port->hdl = INVALID_HANDLE_VALUE; | |
107 | #else | |
108 | port->fd = -1; | |
109 | #endif | |
110 | ||
111 | port->description = NULL; | |
112 | port->transport = SP_TRANSPORT_NATIVE; | |
113 | port->usb_bus = -1; | |
114 | port->usb_address = -1; | |
115 | port->usb_vid = -1; | |
116 | port->usb_pid = -1; | |
117 | port->usb_manufacturer = NULL; | |
118 | port->usb_product = NULL; | |
119 | port->usb_serial = NULL; | |
120 | port->bluetooth_address = NULL; | |
121 | ||
122 | #ifndef NO_PORT_METADATA | |
123 | if ((ret = get_port_details(port)) != SP_OK) { | |
124 | sp_free_port(port); | |
125 | return ret; | |
126 | } | |
127 | #endif | |
128 | ||
129 | *port_ptr = port; | |
130 | ||
131 | RETURN_OK(); | |
132 | } | |
133 | ||
134 | SP_API char *sp_get_port_name(const struct sp_port *port) | |
135 | { | |
136 | TRACE("%p", port); | |
137 | ||
138 | if (!port) | |
139 | return NULL; | |
140 | ||
141 | RETURN_STRING(port->name); | |
142 | } | |
143 | ||
144 | SP_API char *sp_get_port_description(const struct sp_port *port) | |
145 | { | |
146 | TRACE("%p", port); | |
147 | ||
148 | if (!port || !port->description) | |
149 | return NULL; | |
150 | ||
151 | RETURN_STRING(port->description); | |
152 | } | |
153 | ||
154 | SP_API enum sp_transport sp_get_port_transport(const struct sp_port *port) | |
155 | { | |
156 | TRACE("%p", port); | |
157 | ||
158 | if (!port) | |
159 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
160 | ||
161 | RETURN_INT(port->transport); | |
162 | } | |
163 | ||
164 | SP_API enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port, | |
165 | int *usb_bus,int *usb_address) | |
166 | { | |
167 | TRACE("%p", port); | |
168 | ||
169 | if (!port) | |
170 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
171 | if (port->transport != SP_TRANSPORT_USB) | |
172 | RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport"); | |
173 | if (port->usb_bus < 0 || port->usb_address < 0) | |
174 | RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available"); | |
175 | ||
176 | if (usb_bus) | |
177 | *usb_bus = port->usb_bus; | |
178 | if (usb_address) | |
179 | *usb_address = port->usb_address; | |
180 | ||
181 | RETURN_OK(); | |
182 | } | |
183 | ||
184 | SP_API enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port, | |
185 | int *usb_vid, int *usb_pid) | |
186 | { | |
187 | TRACE("%p", port); | |
188 | ||
189 | if (!port) | |
190 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
191 | if (port->transport != SP_TRANSPORT_USB) | |
192 | RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport"); | |
193 | if (port->usb_vid < 0 || port->usb_pid < 0) | |
194 | RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available"); | |
195 | ||
196 | if (usb_vid) | |
197 | *usb_vid = port->usb_vid; | |
198 | if (usb_pid) | |
199 | *usb_pid = port->usb_pid; | |
200 | ||
201 | RETURN_OK(); | |
202 | } | |
203 | ||
204 | SP_API char *sp_get_port_usb_manufacturer(const struct sp_port *port) | |
205 | { | |
206 | TRACE("%p", port); | |
207 | ||
208 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer) | |
209 | return NULL; | |
210 | ||
211 | RETURN_STRING(port->usb_manufacturer); | |
212 | } | |
213 | ||
214 | SP_API char *sp_get_port_usb_product(const struct sp_port *port) | |
215 | { | |
216 | TRACE("%p", port); | |
217 | ||
218 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product) | |
219 | return NULL; | |
220 | ||
221 | RETURN_STRING(port->usb_product); | |
222 | } | |
223 | ||
224 | SP_API char *sp_get_port_usb_serial(const struct sp_port *port) | |
225 | { | |
226 | TRACE("%p", port); | |
227 | ||
228 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial) | |
229 | return NULL; | |
230 | ||
231 | RETURN_STRING(port->usb_serial); | |
232 | } | |
233 | ||
234 | SP_API char *sp_get_port_bluetooth_address(const struct sp_port *port) | |
235 | { | |
236 | TRACE("%p", port); | |
237 | ||
238 | if (!port || port->transport != SP_TRANSPORT_BLUETOOTH | |
239 | || !port->bluetooth_address) | |
240 | return NULL; | |
241 | ||
242 | RETURN_STRING(port->bluetooth_address); | |
243 | } | |
244 | ||
245 | SP_API enum sp_return sp_get_port_handle(const struct sp_port *port, | |
246 | void *result_ptr) | |
247 | { | |
248 | TRACE("%p, %p", port, result_ptr); | |
249 | ||
250 | if (!port) | |
251 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
252 | if (!result_ptr) | |
253 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
254 | ||
255 | #ifdef _WIN32 | |
256 | HANDLE *handle_ptr = result_ptr; | |
257 | *handle_ptr = port->hdl; | |
258 | #else | |
259 | int *fd_ptr = result_ptr; | |
260 | *fd_ptr = port->fd; | |
261 | #endif | |
262 | ||
263 | RETURN_OK(); | |
264 | } | |
265 | ||
266 | SP_API enum sp_return sp_copy_port(const struct sp_port *port, | |
267 | struct sp_port **copy_ptr) | |
268 | { | |
269 | TRACE("%p, %p", port, copy_ptr); | |
270 | ||
271 | if (!copy_ptr) | |
272 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
273 | ||
274 | *copy_ptr = NULL; | |
275 | ||
276 | if (!port) | |
277 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
278 | ||
279 | if (!port->name) | |
280 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); | |
281 | ||
282 | DEBUG("Copying port structure"); | |
283 | ||
284 | RETURN_INT(sp_get_port_by_name(port->name, copy_ptr)); | |
285 | } | |
286 | ||
287 | SP_API void sp_free_port(struct sp_port *port) | |
288 | { | |
289 | TRACE("%p", port); | |
290 | ||
291 | if (!port) { | |
292 | DEBUG("Null port"); | |
293 | RETURN(); | |
294 | } | |
295 | ||
296 | DEBUG("Freeing port structure"); | |
297 | ||
298 | if (port->name) | |
299 | free(port->name); | |
300 | if (port->description) | |
301 | free(port->description); | |
302 | if (port->usb_manufacturer) | |
303 | free(port->usb_manufacturer); | |
304 | if (port->usb_product) | |
305 | free(port->usb_product); | |
306 | if (port->usb_serial) | |
307 | free(port->usb_serial); | |
308 | if (port->bluetooth_address) | |
309 | free(port->bluetooth_address); | |
310 | #ifdef _WIN32 | |
311 | if (port->usb_path) | |
312 | free(port->usb_path); | |
313 | #endif | |
314 | ||
315 | free(port); | |
316 | ||
317 | RETURN(); | |
318 | } | |
319 | ||
320 | SP_PRIV struct sp_port **list_append(struct sp_port **list, | |
321 | const char *portname) | |
322 | { | |
323 | void *tmp; | |
324 | unsigned int count; | |
325 | ||
326 | for (count = 0; list[count]; count++); | |
327 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) | |
328 | goto fail; | |
329 | list = tmp; | |
330 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) | |
331 | goto fail; | |
332 | list[count + 1] = NULL; | |
333 | return list; | |
334 | ||
335 | fail: | |
336 | sp_free_port_list(list); | |
337 | return NULL; | |
338 | } | |
339 | ||
340 | SP_API enum sp_return sp_list_ports(struct sp_port ***list_ptr) | |
341 | { | |
342 | #ifndef NO_ENUMERATION | |
343 | struct sp_port **list; | |
344 | int ret; | |
345 | #endif | |
346 | ||
347 | TRACE("%p", list_ptr); | |
348 | ||
349 | if (!list_ptr) | |
350 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
351 | ||
352 | *list_ptr = NULL; | |
353 | ||
354 | #ifdef NO_ENUMERATION | |
355 | RETURN_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform"); | |
356 | #else | |
357 | DEBUG("Enumerating ports"); | |
358 | ||
359 | if (!(list = malloc(sizeof(struct sp_port *)))) | |
360 | RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed"); | |
361 | ||
362 | list[0] = NULL; | |
363 | ||
364 | ret = list_ports(&list); | |
365 | ||
366 | if (ret == SP_OK) { | |
367 | *list_ptr = list; | |
368 | } else { | |
369 | sp_free_port_list(list); | |
370 | *list_ptr = NULL; | |
371 | } | |
372 | ||
373 | RETURN_CODEVAL(ret); | |
374 | #endif | |
375 | } | |
376 | ||
377 | SP_API void sp_free_port_list(struct sp_port **list) | |
378 | { | |
379 | unsigned int i; | |
380 | ||
381 | TRACE("%p", list); | |
382 | ||
383 | if (!list) { | |
384 | DEBUG("Null list"); | |
385 | RETURN(); | |
386 | } | |
387 | ||
388 | DEBUG("Freeing port list"); | |
389 | ||
390 | for (i = 0; list[i]; i++) | |
391 | sp_free_port(list[i]); | |
392 | free(list); | |
393 | ||
394 | RETURN(); | |
395 | } | |
396 | ||
397 | #define CHECK_PORT() do { \ | |
398 | if (!port) \ | |
399 | RETURN_ERROR(SP_ERR_ARG, "Null port"); \ | |
400 | if (!port->name) \ | |
401 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); \ | |
402 | } while (0) | |
403 | #ifdef _WIN32 | |
404 | #define CHECK_PORT_HANDLE() do { \ | |
405 | if (port->hdl == INVALID_HANDLE_VALUE) \ | |
406 | RETURN_ERROR(SP_ERR_ARG, "Port not open"); \ | |
407 | } while (0) | |
408 | #else | |
409 | #define CHECK_PORT_HANDLE() do { \ | |
410 | if (port->fd < 0) \ | |
411 | RETURN_ERROR(SP_ERR_ARG, "Port not open"); \ | |
412 | } while (0) | |
413 | #endif | |
414 | #define CHECK_OPEN_PORT() do { \ | |
415 | CHECK_PORT(); \ | |
416 | CHECK_PORT_HANDLE(); \ | |
417 | } while (0) | |
418 | ||
419 | #ifdef WIN32 | |
420 | /** To be called after port receive buffer is emptied. */ | |
421 | static enum sp_return restart_wait(struct sp_port *port) | |
422 | { | |
423 | DWORD wait_result; | |
424 | ||
425 | if (port->wait_running) { | |
426 | /* Check status of running wait operation. */ | |
427 | if (GetOverlappedResult(port->hdl, &port->wait_ovl, | |
428 | &wait_result, FALSE)) { | |
429 | DEBUG("Previous wait completed"); | |
430 | port->wait_running = FALSE; | |
431 | } else if (GetLastError() == ERROR_IO_INCOMPLETE) { | |
432 | DEBUG("Previous wait still running"); | |
433 | RETURN_OK(); | |
434 | } else { | |
435 | RETURN_FAIL("GetOverlappedResult() failed"); | |
436 | } | |
437 | } | |
438 | ||
439 | if (!port->wait_running) { | |
440 | /* Start new wait operation. */ | |
441 | if (WaitCommEvent(port->hdl, &port->events, | |
442 | &port->wait_ovl)) { | |
443 | DEBUG("New wait returned, events already pending"); | |
444 | } else if (GetLastError() == ERROR_IO_PENDING) { | |
445 | DEBUG("New wait running in background"); | |
446 | port->wait_running = TRUE; | |
447 | } else { | |
448 | RETURN_FAIL("WaitCommEvent() failed"); | |
449 | } | |
450 | } | |
451 | ||
452 | RETURN_OK(); | |
453 | } | |
454 | #endif | |
455 | ||
456 | SP_API enum sp_return sp_open(struct sp_port *port, enum sp_mode flags) | |
457 | { | |
458 | struct port_data data; | |
459 | struct sp_port_config config; | |
460 | enum sp_return ret; | |
461 | ||
462 | TRACE("%p, 0x%x", port, flags); | |
463 | ||
464 | CHECK_PORT(); | |
465 | ||
466 | if (flags > SP_MODE_READ_WRITE) | |
467 | RETURN_ERROR(SP_ERR_ARG, "Invalid flags"); | |
468 | ||
469 | DEBUG_FMT("Opening port %s", port->name); | |
470 | ||
471 | #ifdef _WIN32 | |
472 | DWORD desired_access = 0, flags_and_attributes = 0, errors; | |
473 | char *escaped_port_name; | |
474 | COMSTAT status; | |
475 | ||
476 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
477 | if (!(escaped_port_name = malloc(strlen(port->name) + 5))) | |
478 | RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed"); | |
479 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
480 | ||
481 | /* Map 'flags' to the OS-specific settings. */ | |
482 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED; | |
483 | if (flags & SP_MODE_READ) | |
484 | desired_access |= GENERIC_READ; | |
485 | if (flags & SP_MODE_WRITE) | |
486 | desired_access |= GENERIC_WRITE; | |
487 | ||
488 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, | |
489 | OPEN_EXISTING, flags_and_attributes, 0); | |
490 | ||
491 | free(escaped_port_name); | |
492 | ||
493 | if (port->hdl == INVALID_HANDLE_VALUE) | |
494 | RETURN_FAIL("Port CreateFile() failed"); | |
495 | ||
496 | /* All timeouts initially disabled. */ | |
497 | port->timeouts.ReadIntervalTimeout = 0; | |
498 | port->timeouts.ReadTotalTimeoutMultiplier = 0; | |
499 | port->timeouts.ReadTotalTimeoutConstant = 0; | |
500 | port->timeouts.WriteTotalTimeoutMultiplier = 0; | |
501 | port->timeouts.WriteTotalTimeoutConstant = 0; | |
502 | ||
503 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) { | |
504 | sp_close(port); | |
505 | RETURN_FAIL("SetCommTimeouts() failed"); | |
506 | } | |
507 | ||
508 | /* Prepare OVERLAPPED structures. */ | |
509 | #define INIT_OVERLAPPED(ovl) do { \ | |
510 | memset(&port->ovl, 0, sizeof(port->ovl)); \ | |
511 | port->ovl.hEvent = INVALID_HANDLE_VALUE; \ | |
512 | if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \ | |
513 | == INVALID_HANDLE_VALUE) { \ | |
514 | sp_close(port); \ | |
515 | RETURN_FAIL(#ovl "CreateEvent() failed"); \ | |
516 | } \ | |
517 | } while (0) | |
518 | ||
519 | INIT_OVERLAPPED(read_ovl); | |
520 | INIT_OVERLAPPED(write_ovl); | |
521 | INIT_OVERLAPPED(wait_ovl); | |
522 | ||
523 | /* Set event mask for RX and error events. */ | |
524 | if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) { | |
525 | sp_close(port); | |
526 | RETURN_FAIL("SetCommMask() failed"); | |
527 | } | |
528 | ||
529 | port->writing = FALSE; | |
530 | port->wait_running = FALSE; | |
531 | ||
532 | ret = restart_wait(port); | |
533 | ||
534 | if (ret < 0) { | |
535 | sp_close(port); | |
536 | RETURN_CODEVAL(ret); | |
537 | } | |
538 | #else | |
539 | int flags_local = O_NONBLOCK | O_NOCTTY; | |
540 | ||
541 | /* Map 'flags' to the OS-specific settings. */ | |
542 | if ((flags & SP_MODE_READ_WRITE) == SP_MODE_READ_WRITE) | |
543 | flags_local |= O_RDWR; | |
544 | else if (flags & SP_MODE_READ) | |
545 | flags_local |= O_RDONLY; | |
546 | else if (flags & SP_MODE_WRITE) | |
547 | flags_local |= O_WRONLY; | |
548 | ||
549 | if ((port->fd = open(port->name, flags_local)) < 0) | |
550 | RETURN_FAIL("open() failed"); | |
551 | #endif | |
552 | ||
553 | ret = get_config(port, &data, &config); | |
554 | ||
555 | if (ret < 0) { | |
556 | sp_close(port); | |
557 | RETURN_CODEVAL(ret); | |
558 | } | |
559 | ||
560 | /* Set sane port settings. */ | |
561 | #ifdef _WIN32 | |
562 | data.dcb.fBinary = TRUE; | |
563 | data.dcb.fDsrSensitivity = FALSE; | |
564 | data.dcb.fErrorChar = FALSE; | |
565 | data.dcb.fNull = FALSE; | |
566 | data.dcb.fAbortOnError = FALSE; | |
567 | #else | |
568 | /* Turn off all fancy termios tricks, give us a raw channel. */ | |
569 | data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL); | |
570 | #ifdef IUCLC | |
571 | data.term.c_iflag &= ~IUCLC; | |
572 | #endif | |
573 | data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET); | |
574 | #ifdef OLCUC | |
575 | data.term.c_oflag &= ~OLCUC; | |
576 | #endif | |
577 | #ifdef NLDLY | |
578 | data.term.c_oflag &= ~NLDLY; | |
579 | #endif | |
580 | #ifdef CRDLY | |
581 | data.term.c_oflag &= ~CRDLY; | |
582 | #endif | |
583 | #ifdef TABDLY | |
584 | data.term.c_oflag &= ~TABDLY; | |
585 | #endif | |
586 | #ifdef BSDLY | |
587 | data.term.c_oflag &= ~BSDLY; | |
588 | #endif | |
589 | #ifdef VTDLY | |
590 | data.term.c_oflag &= ~VTDLY; | |
591 | #endif | |
592 | #ifdef FFDLY | |
593 | data.term.c_oflag &= ~FFDLY; | |
594 | #endif | |
595 | #ifdef OFILL | |
596 | data.term.c_oflag &= ~OFILL; | |
597 | #endif | |
598 | data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN); | |
599 | data.term.c_cc[VMIN] = 0; | |
600 | data.term.c_cc[VTIME] = 0; | |
601 | ||
602 | /* Ignore modem status lines; enable receiver; leave control lines alone on close. */ | |
603 | data.term.c_cflag |= (CLOCAL | CREAD | HUPCL); | |
604 | #endif | |
605 | ||
606 | #ifdef _WIN32 | |
607 | if (ClearCommError(port->hdl, &errors, &status) == 0) | |
608 | RETURN_FAIL("ClearCommError() failed"); | |
609 | #endif | |
610 | ||
611 | ret = set_config(port, &data, &config); | |
612 | ||
613 | if (ret < 0) { | |
614 | sp_close(port); | |
615 | RETURN_CODEVAL(ret); | |
616 | } | |
617 | ||
618 | RETURN_OK(); | |
619 | } | |
620 | ||
621 | SP_API enum sp_return sp_close(struct sp_port *port) | |
622 | { | |
623 | TRACE("%p", port); | |
624 | ||
625 | CHECK_OPEN_PORT(); | |
626 | ||
627 | DEBUG_FMT("Closing port %s", port->name); | |
628 | ||
629 | #ifdef _WIN32 | |
630 | /* Returns non-zero upon success, 0 upon failure. */ | |
631 | if (CloseHandle(port->hdl) == 0) | |
632 | RETURN_FAIL("Port CloseHandle() failed"); | |
633 | port->hdl = INVALID_HANDLE_VALUE; | |
634 | ||
635 | /* Close event handles for overlapped structures. */ | |
636 | #define CLOSE_OVERLAPPED(ovl) do { \ | |
637 | if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \ | |
638 | CloseHandle(port->ovl.hEvent) == 0) \ | |
639 | RETURN_FAIL(# ovl "event CloseHandle() failed"); \ | |
640 | } while (0) | |
641 | CLOSE_OVERLAPPED(read_ovl); | |
642 | CLOSE_OVERLAPPED(write_ovl); | |
643 | CLOSE_OVERLAPPED(wait_ovl); | |
644 | ||
645 | #else | |
646 | /* Returns 0 upon success, -1 upon failure. */ | |
647 | if (close(port->fd) == -1) | |
648 | RETURN_FAIL("close() failed"); | |
649 | port->fd = -1; | |
650 | #endif | |
651 | ||
652 | RETURN_OK(); | |
653 | } | |
654 | ||
655 | SP_API enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers) | |
656 | { | |
657 | TRACE("%p, 0x%x", port, buffers); | |
658 | ||
659 | CHECK_OPEN_PORT(); | |
660 | ||
661 | if (buffers > SP_BUF_BOTH) | |
662 | RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection"); | |
663 | ||
664 | const char *buffer_names[] = {"no", "input", "output", "both"}; | |
665 | ||
666 | DEBUG_FMT("Flushing %s buffers on port %s", | |
667 | buffer_names[buffers], port->name); | |
668 | ||
669 | #ifdef _WIN32 | |
670 | DWORD flags = 0; | |
671 | if (buffers & SP_BUF_INPUT) | |
672 | flags |= PURGE_RXCLEAR; | |
673 | if (buffers & SP_BUF_OUTPUT) | |
674 | flags |= PURGE_TXCLEAR; | |
675 | ||
676 | /* Returns non-zero upon success, 0 upon failure. */ | |
677 | if (PurgeComm(port->hdl, flags) == 0) | |
678 | RETURN_FAIL("PurgeComm() failed"); | |
679 | ||
680 | if (buffers & SP_BUF_INPUT) | |
681 | TRY(restart_wait(port)); | |
682 | #else | |
683 | int flags = 0; | |
684 | if (buffers == SP_BUF_BOTH) | |
685 | flags = TCIOFLUSH; | |
686 | else if (buffers == SP_BUF_INPUT) | |
687 | flags = TCIFLUSH; | |
688 | else if (buffers == SP_BUF_OUTPUT) | |
689 | flags = TCOFLUSH; | |
690 | ||
691 | /* Returns 0 upon success, -1 upon failure. */ | |
692 | if (tcflush(port->fd, flags) < 0) | |
693 | RETURN_FAIL("tcflush() failed"); | |
694 | #endif | |
695 | RETURN_OK(); | |
696 | } | |
697 | ||
698 | SP_API enum sp_return sp_drain(struct sp_port *port) | |
699 | { | |
700 | TRACE("%p", port); | |
701 | ||
702 | CHECK_OPEN_PORT(); | |
703 | ||
704 | DEBUG_FMT("Draining port %s", port->name); | |
705 | ||
706 | #ifdef _WIN32 | |
707 | /* Returns non-zero upon success, 0 upon failure. */ | |
708 | if (FlushFileBuffers(port->hdl) == 0) | |
709 | RETURN_FAIL("FlushFileBuffers() failed"); | |
710 | RETURN_OK(); | |
711 | #else | |
712 | int result; | |
713 | while (1) { | |
714 | #ifdef __ANDROID__ | |
715 | int arg = 1; | |
716 | result = ioctl(port->fd, TCSBRK, &arg); | |
717 | #else | |
718 | result = tcdrain(port->fd); | |
719 | #endif | |
720 | if (result < 0) { | |
721 | if (errno == EINTR) { | |
722 | DEBUG("tcdrain() was interrupted"); | |
723 | continue; | |
724 | } else { | |
725 | RETURN_FAIL("tcdrain() failed"); | |
726 | } | |
727 | } else { | |
728 | RETURN_OK(); | |
729 | } | |
730 | } | |
731 | #endif | |
732 | } | |
733 | ||
734 | #ifdef _WIN32 | |
735 | static enum sp_return await_write_completion(struct sp_port *port) | |
736 | { | |
737 | TRACE("%p", port); | |
738 | DWORD bytes_written; | |
739 | BOOL result; | |
740 | ||
741 | /* Wait for previous non-blocking write to complete, if any. */ | |
742 | if (port->writing) { | |
743 | DEBUG("Waiting for previous write to complete"); | |
744 | result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE); | |
745 | port->writing = 0; | |
746 | if (!result) | |
747 | RETURN_FAIL("Previous write failed to complete"); | |
748 | DEBUG("Previous write completed"); | |
749 | } | |
750 | ||
751 | RETURN_OK(); | |
752 | } | |
753 | #endif | |
754 | ||
755 | SP_API enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, | |
756 | size_t count, unsigned int timeout_ms) | |
757 | { | |
758 | TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms); | |
759 | ||
760 | CHECK_OPEN_PORT(); | |
761 | ||
762 | if (!buf) | |
763 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
764 | ||
765 | if (timeout_ms) | |
766 | DEBUG_FMT("Writing %d bytes to port %s, timeout %d ms", | |
767 | count, port->name, timeout_ms); | |
768 | else | |
769 | DEBUG_FMT("Writing %d bytes to port %s, no timeout", | |
770 | count, port->name); | |
771 | ||
772 | if (count == 0) | |
773 | RETURN_INT(0); | |
774 | ||
775 | #ifdef _WIN32 | |
776 | DWORD bytes_written = 0; | |
777 | ||
778 | TRY(await_write_completion(port)); | |
779 | ||
780 | /* Set timeout. */ | |
781 | if (port->timeouts.WriteTotalTimeoutConstant != timeout_ms) { | |
782 | port->timeouts.WriteTotalTimeoutConstant = timeout_ms; | |
783 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
784 | RETURN_FAIL("SetCommTimeouts() failed"); | |
785 | } | |
786 | ||
787 | /* Start write. */ | |
788 | if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl)) { | |
789 | DEBUG("Write completed immediately"); | |
790 | RETURN_INT(count); | |
791 | } else if (GetLastError() == ERROR_IO_PENDING) { | |
792 | DEBUG("Waiting for write to complete"); | |
793 | if (GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE) == 0) { | |
794 | if (GetLastError() == ERROR_SEM_TIMEOUT) { | |
795 | DEBUG("Write timed out"); | |
796 | RETURN_INT(0); | |
797 | } else { | |
798 | RETURN_FAIL("GetOverlappedResult() failed"); | |
799 | } | |
800 | } | |
801 | DEBUG_FMT("Write completed, %d/%d bytes written", bytes_written, count); | |
802 | RETURN_INT(bytes_written); | |
803 | } else { | |
804 | RETURN_FAIL("WriteFile() failed"); | |
805 | } | |
806 | #else | |
807 | size_t bytes_written = 0; | |
808 | unsigned char *ptr = (unsigned char *) buf; | |
809 | struct timeval start, delta, now, end = {0, 0}; | |
810 | int started = 0; | |
811 | fd_set fds; | |
812 | int result; | |
813 | ||
814 | if (timeout_ms) { | |
815 | /* Get time at start of operation. */ | |
816 | gettimeofday(&start, NULL); | |
817 | /* Define duration of timeout. */ | |
818 | delta.tv_sec = timeout_ms / 1000; | |
819 | delta.tv_usec = (timeout_ms % 1000) * 1000; | |
820 | /* Calculate time at which we should give up. */ | |
821 | timeradd(&start, &delta, &end); | |
822 | } | |
823 | ||
824 | FD_ZERO(&fds); | |
825 | FD_SET(port->fd, &fds); | |
826 | ||
827 | /* Loop until we have written the requested number of bytes. */ | |
828 | while (bytes_written < count) { | |
829 | /* | |
830 | * Check timeout only if we have run select() at least once, | |
831 | * to avoid any issues if a short timeout is reached before | |
832 | * select() is even run. | |
833 | */ | |
834 | if (timeout_ms && started) { | |
835 | gettimeofday(&now, NULL); | |
836 | if (timercmp(&now, &end, >)) | |
837 | /* Timeout has expired. */ | |
838 | break; | |
839 | timersub(&end, &now, &delta); | |
840 | } | |
841 | result = select(port->fd + 1, NULL, &fds, NULL, timeout_ms ? &delta : NULL); | |
842 | started = 1; | |
843 | if (result < 0) { | |
844 | if (errno == EINTR) { | |
845 | DEBUG("select() call was interrupted, repeating"); | |
846 | continue; | |
847 | } else { | |
848 | RETURN_FAIL("select() failed"); | |
849 | } | |
850 | } else if (result == 0) { | |
851 | /* Timeout has expired. */ | |
852 | break; | |
853 | } | |
854 | ||
855 | /* Do write. */ | |
856 | result = write(port->fd, ptr, count - bytes_written); | |
857 | ||
858 | if (result < 0) { | |
859 | if (errno == EAGAIN) | |
860 | /* This shouldn't happen because we did a select() first, but handle anyway. */ | |
861 | continue; | |
862 | else | |
863 | /* This is an actual failure. */ | |
864 | RETURN_FAIL("write() failed"); | |
865 | } | |
866 | ||
867 | bytes_written += result; | |
868 | ptr += result; | |
869 | } | |
870 | ||
871 | if (bytes_written < count) | |
872 | DEBUG("Write timed out"); | |
873 | ||
874 | RETURN_INT(bytes_written); | |
875 | #endif | |
876 | } | |
877 | ||
878 | SP_API enum sp_return sp_nonblocking_write(struct sp_port *port, | |
879 | const void *buf, size_t count) | |
880 | { | |
881 | TRACE("%p, %p, %d", port, buf, count); | |
882 | ||
883 | CHECK_OPEN_PORT(); | |
884 | ||
885 | if (!buf) | |
886 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
887 | ||
888 | DEBUG_FMT("Writing up to %d bytes to port %s", count, port->name); | |
889 | ||
890 | if (count == 0) | |
891 | RETURN_INT(0); | |
892 | ||
893 | #ifdef _WIN32 | |
894 | DWORD written = 0; | |
895 | BYTE *ptr = (BYTE *) buf; | |
896 | ||
897 | /* Check whether previous write is complete. */ | |
898 | if (port->writing) { | |
899 | if (HasOverlappedIoCompleted(&port->write_ovl)) { | |
900 | DEBUG("Previous write completed"); | |
901 | port->writing = 0; | |
902 | } else { | |
903 | DEBUG("Previous write not complete"); | |
904 | /* Can't take a new write until the previous one finishes. */ | |
905 | RETURN_INT(0); | |
906 | } | |
907 | } | |
908 | ||
909 | /* Set timeout. */ | |
910 | if (port->timeouts.WriteTotalTimeoutConstant != 0) { | |
911 | port->timeouts.WriteTotalTimeoutConstant = 0; | |
912 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
913 | RETURN_FAIL("SetCommTimeouts() failed"); | |
914 | } | |
915 | ||
916 | /* | |
917 | * Keep writing data until the OS has to actually start an async IO | |
918 | * for it. At that point we know the buffer is full. | |
919 | */ | |
920 | while (written < count) { | |
921 | /* Copy first byte of user buffer. */ | |
922 | port->pending_byte = *ptr++; | |
923 | ||
924 | /* Start asynchronous write. */ | |
925 | if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) { | |
926 | if (GetLastError() == ERROR_IO_PENDING) { | |
927 | if (HasOverlappedIoCompleted(&port->write_ovl)) { | |
928 | DEBUG("Asynchronous write completed immediately"); | |
929 | port->writing = 0; | |
930 | written++; | |
931 | continue; | |
932 | } else { | |
933 | DEBUG("Asynchronous write running"); | |
934 | port->writing = 1; | |
935 | RETURN_INT(++written); | |
936 | } | |
937 | } else { | |
938 | /* Actual failure of some kind. */ | |
939 | RETURN_FAIL("WriteFile() failed"); | |
940 | } | |
941 | } else { | |
942 | DEBUG("Single byte written immediately"); | |
943 | written++; | |
944 | } | |
945 | } | |
946 | ||
947 | DEBUG("All bytes written immediately"); | |
948 | ||
949 | RETURN_INT(written); | |
950 | #else | |
951 | /* Returns the number of bytes written, or -1 upon failure. */ | |
952 | ssize_t written = write(port->fd, buf, count); | |
953 | ||
954 | if (written < 0) | |
955 | RETURN_FAIL("write() failed"); | |
956 | else | |
957 | RETURN_INT(written); | |
958 | #endif | |
959 | } | |
960 | ||
961 | #ifdef _WIN32 | |
962 | /* Restart wait operation if buffer was emptied. */ | |
963 | static enum sp_return restart_wait_if_needed(struct sp_port *port, unsigned int bytes_read) | |
964 | { | |
965 | DWORD errors; | |
966 | COMSTAT comstat; | |
967 | ||
968 | if (bytes_read == 0) | |
969 | RETURN_OK(); | |
970 | ||
971 | if (ClearCommError(port->hdl, &errors, &comstat) == 0) | |
972 | RETURN_FAIL("ClearCommError() failed"); | |
973 | ||
974 | if (comstat.cbInQue == 0) | |
975 | TRY(restart_wait(port)); | |
976 | ||
977 | RETURN_OK(); | |
978 | } | |
979 | #endif | |
980 | ||
981 | SP_API enum sp_return sp_blocking_read(struct sp_port *port, void *buf, | |
982 | size_t count, unsigned int timeout_ms) | |
983 | { | |
984 | TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms); | |
985 | ||
986 | CHECK_OPEN_PORT(); | |
987 | ||
988 | if (!buf) | |
989 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
990 | ||
991 | if (timeout_ms) | |
992 | DEBUG_FMT("Reading %d bytes from port %s, timeout %d ms", | |
993 | count, port->name, timeout_ms); | |
994 | else | |
995 | DEBUG_FMT("Reading %d bytes from port %s, no timeout", | |
996 | count, port->name); | |
997 | ||
998 | if (count == 0) | |
999 | RETURN_INT(0); | |
1000 | ||
1001 | #ifdef _WIN32 | |
1002 | DWORD bytes_read = 0; | |
1003 | ||
1004 | /* Set timeout. */ | |
1005 | if (port->timeouts.ReadIntervalTimeout != 0 || | |
1006 | port->timeouts.ReadTotalTimeoutMultiplier != 0 || | |
1007 | port->timeouts.ReadTotalTimeoutConstant != timeout_ms) { | |
1008 | port->timeouts.ReadIntervalTimeout = 0; | |
1009 | port->timeouts.ReadTotalTimeoutMultiplier = 0; | |
1010 | port->timeouts.ReadTotalTimeoutConstant = timeout_ms; | |
1011 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
1012 | RETURN_FAIL("SetCommTimeouts() failed"); | |
1013 | } | |
1014 | ||
1015 | /* Start read. */ | |
1016 | if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl)) { | |
1017 | DEBUG("Read completed immediately"); | |
1018 | bytes_read = count; | |
1019 | } else if (GetLastError() == ERROR_IO_PENDING) { | |
1020 | DEBUG("Waiting for read to complete"); | |
1021 | if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0) | |
1022 | RETURN_FAIL("GetOverlappedResult() failed"); | |
1023 | DEBUG_FMT("Read completed, %d/%d bytes read", bytes_read, count); | |
1024 | } else { | |
1025 | RETURN_FAIL("ReadFile() failed"); | |
1026 | } | |
1027 | ||
1028 | TRY(restart_wait_if_needed(port, bytes_read)); | |
1029 | ||
1030 | RETURN_INT(bytes_read); | |
1031 | ||
1032 | #else | |
1033 | size_t bytes_read = 0; | |
1034 | unsigned char *ptr = (unsigned char *) buf; | |
1035 | struct timeval start, delta, now, end = {0, 0}; | |
1036 | int started = 0; | |
1037 | fd_set fds; | |
1038 | int result; | |
1039 | ||
1040 | if (timeout_ms) { | |
1041 | /* Get time at start of operation. */ | |
1042 | gettimeofday(&start, NULL); | |
1043 | /* Define duration of timeout. */ | |
1044 | delta.tv_sec = timeout_ms / 1000; | |
1045 | delta.tv_usec = (timeout_ms % 1000) * 1000; | |
1046 | /* Calculate time at which we should give up. */ | |
1047 | timeradd(&start, &delta, &end); | |
1048 | } | |
1049 | ||
1050 | FD_ZERO(&fds); | |
1051 | FD_SET(port->fd, &fds); | |
1052 | ||
1053 | /* Loop until we have the requested number of bytes. */ | |
1054 | while (bytes_read < count) { | |
1055 | /* | |
1056 | * Check timeout only if we have run select() at least once, | |
1057 | * to avoid any issues if a short timeout is reached before | |
1058 | * select() is even run. | |
1059 | */ | |
1060 | if (timeout_ms && started) { | |
1061 | gettimeofday(&now, NULL); | |
1062 | if (timercmp(&now, &end, >)) | |
1063 | /* Timeout has expired. */ | |
1064 | break; | |
1065 | timersub(&end, &now, &delta); | |
1066 | } | |
1067 | result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL); | |
1068 | started = 1; | |
1069 | if (result < 0) { | |
1070 | if (errno == EINTR) { | |
1071 | DEBUG("select() call was interrupted, repeating"); | |
1072 | continue; | |
1073 | } else { | |
1074 | RETURN_FAIL("select() failed"); | |
1075 | } | |
1076 | } else if (result == 0) { | |
1077 | /* Timeout has expired. */ | |
1078 | break; | |
1079 | } | |
1080 | ||
1081 | /* Do read. */ | |
1082 | result = read(port->fd, ptr, count - bytes_read); | |
1083 | ||
1084 | if (result < 0) { | |
1085 | if (errno == EAGAIN) | |
1086 | /* | |
1087 | * This shouldn't happen because we did a | |
1088 | * select() first, but handle anyway. | |
1089 | */ | |
1090 | continue; | |
1091 | else | |
1092 | /* This is an actual failure. */ | |
1093 | RETURN_FAIL("read() failed"); | |
1094 | } | |
1095 | ||
1096 | bytes_read += result; | |
1097 | ptr += result; | |
1098 | } | |
1099 | ||
1100 | if (bytes_read < count) | |
1101 | DEBUG("Read timed out"); | |
1102 | ||
1103 | RETURN_INT(bytes_read); | |
1104 | #endif | |
1105 | } | |
1106 | ||
1107 | SP_API enum sp_return sp_blocking_read_next(struct sp_port *port, void *buf, | |
1108 | size_t count, unsigned int timeout_ms) | |
1109 | { | |
1110 | TRACE("%p, %p, %d, %d", port, buf, count, timeout_ms); | |
1111 | ||
1112 | CHECK_OPEN_PORT(); | |
1113 | ||
1114 | if (!buf) | |
1115 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
1116 | ||
1117 | if (count == 0) | |
1118 | RETURN_ERROR(SP_ERR_ARG, "Zero count"); | |
1119 | ||
1120 | if (timeout_ms) | |
1121 | DEBUG_FMT("Reading next max %d bytes from port %s, timeout %d ms", | |
1122 | count, port->name, timeout_ms); | |
1123 | else | |
1124 | DEBUG_FMT("Reading next max %d bytes from port %s, no timeout", | |
1125 | count, port->name); | |
1126 | ||
1127 | #ifdef _WIN32 | |
1128 | DWORD bytes_read = 0; | |
1129 | ||
1130 | /* If timeout_ms == 0, set maximum timeout. */ | |
1131 | DWORD timeout_val = (timeout_ms == 0 ? MAXDWORD - 1 : timeout_ms); | |
1132 | ||
1133 | /* Set timeout. */ | |
1134 | if (port->timeouts.ReadIntervalTimeout != MAXDWORD || | |
1135 | port->timeouts.ReadTotalTimeoutMultiplier != MAXDWORD || | |
1136 | port->timeouts.ReadTotalTimeoutConstant != timeout_val) { | |
1137 | port->timeouts.ReadIntervalTimeout = MAXDWORD; | |
1138 | port->timeouts.ReadTotalTimeoutMultiplier = MAXDWORD; | |
1139 | port->timeouts.ReadTotalTimeoutConstant = timeout_val; | |
1140 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
1141 | RETURN_FAIL("SetCommTimeouts() failed"); | |
1142 | } | |
1143 | ||
1144 | /* Loop until we have at least one byte, or timeout is reached. */ | |
1145 | while (bytes_read == 0) { | |
1146 | /* Start read. */ | |
1147 | if (ReadFile(port->hdl, buf, count, &bytes_read, &port->read_ovl)) { | |
1148 | DEBUG("Read completed immediately"); | |
1149 | } else if (GetLastError() == ERROR_IO_PENDING) { | |
1150 | DEBUG("Waiting for read to complete"); | |
1151 | if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0) | |
1152 | RETURN_FAIL("GetOverlappedResult() failed"); | |
1153 | if (bytes_read > 0) { | |
1154 | DEBUG("Read completed"); | |
1155 | } else if (timeout_ms > 0) { | |
1156 | DEBUG("Read timed out"); | |
1157 | break; | |
1158 | } else { | |
1159 | DEBUG("Restarting read"); | |
1160 | } | |
1161 | } else { | |
1162 | RETURN_FAIL("ReadFile() failed"); | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | TRY(restart_wait_if_needed(port, bytes_read)); | |
1167 | ||
1168 | RETURN_INT(bytes_read); | |
1169 | ||
1170 | #else | |
1171 | size_t bytes_read = 0; | |
1172 | struct timeval start, delta, now, end = {0, 0}; | |
1173 | int started = 0; | |
1174 | fd_set fds; | |
1175 | int result; | |
1176 | ||
1177 | if (timeout_ms) { | |
1178 | /* Get time at start of operation. */ | |
1179 | gettimeofday(&start, NULL); | |
1180 | /* Define duration of timeout. */ | |
1181 | delta.tv_sec = timeout_ms / 1000; | |
1182 | delta.tv_usec = (timeout_ms % 1000) * 1000; | |
1183 | /* Calculate time at which we should give up. */ | |
1184 | timeradd(&start, &delta, &end); | |
1185 | } | |
1186 | ||
1187 | FD_ZERO(&fds); | |
1188 | FD_SET(port->fd, &fds); | |
1189 | ||
1190 | /* Loop until we have at least one byte, or timeout is reached. */ | |
1191 | while (bytes_read == 0) { | |
1192 | /* | |
1193 | * Check timeout only if we have run select() at least once, | |
1194 | * to avoid any issues if a short timeout is reached before | |
1195 | * select() is even run. | |
1196 | */ | |
1197 | if (timeout_ms && started) { | |
1198 | gettimeofday(&now, NULL); | |
1199 | if (timercmp(&now, &end, >)) | |
1200 | /* Timeout has expired. */ | |
1201 | break; | |
1202 | timersub(&end, &now, &delta); | |
1203 | } | |
1204 | result = select(port->fd + 1, &fds, NULL, NULL, timeout_ms ? &delta : NULL); | |
1205 | started = 1; | |
1206 | if (result < 0) { | |
1207 | if (errno == EINTR) { | |
1208 | DEBUG("select() call was interrupted, repeating"); | |
1209 | continue; | |
1210 | } else { | |
1211 | RETURN_FAIL("select() failed"); | |
1212 | } | |
1213 | } else if (result == 0) { | |
1214 | /* Timeout has expired. */ | |
1215 | break; | |
1216 | } | |
1217 | ||
1218 | /* Do read. */ | |
1219 | result = read(port->fd, buf, count); | |
1220 | ||
1221 | if (result < 0) { | |
1222 | if (errno == EAGAIN) | |
1223 | /* This shouldn't happen because we did a select() first, but handle anyway. */ | |
1224 | continue; | |
1225 | else | |
1226 | /* This is an actual failure. */ | |
1227 | RETURN_FAIL("read() failed"); | |
1228 | } | |
1229 | ||
1230 | bytes_read = result; | |
1231 | } | |
1232 | ||
1233 | if (bytes_read == 0) | |
1234 | DEBUG("Read timed out"); | |
1235 | ||
1236 | RETURN_INT(bytes_read); | |
1237 | #endif | |
1238 | } | |
1239 | ||
1240 | SP_API enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf, | |
1241 | size_t count) | |
1242 | { | |
1243 | TRACE("%p, %p, %d", port, buf, count); | |
1244 | ||
1245 | CHECK_OPEN_PORT(); | |
1246 | ||
1247 | if (!buf) | |
1248 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
1249 | ||
1250 | DEBUG_FMT("Reading up to %d bytes from port %s", count, port->name); | |
1251 | ||
1252 | #ifdef _WIN32 | |
1253 | DWORD bytes_read; | |
1254 | ||
1255 | /* Set timeout. */ | |
1256 | if (port->timeouts.ReadIntervalTimeout != MAXDWORD || | |
1257 | port->timeouts.ReadTotalTimeoutMultiplier != 0 || | |
1258 | port->timeouts.ReadTotalTimeoutConstant != 0) { | |
1259 | port->timeouts.ReadIntervalTimeout = MAXDWORD; | |
1260 | port->timeouts.ReadTotalTimeoutMultiplier = 0; | |
1261 | port->timeouts.ReadTotalTimeoutConstant = 0; | |
1262 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
1263 | RETURN_FAIL("SetCommTimeouts() failed"); | |
1264 | } | |
1265 | ||
1266 | /* Do read. */ | |
1267 | if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) | |
1268 | if (GetLastError() != ERROR_IO_PENDING) | |
1269 | RETURN_FAIL("ReadFile() failed"); | |
1270 | ||
1271 | /* Get number of bytes read. */ | |
1272 | if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, FALSE) == 0) | |
1273 | RETURN_FAIL("GetOverlappedResult() failed"); | |
1274 | ||
1275 | TRY(restart_wait_if_needed(port, bytes_read)); | |
1276 | ||
1277 | RETURN_INT(bytes_read); | |
1278 | #else | |
1279 | ssize_t bytes_read; | |
1280 | ||
1281 | /* Returns the number of bytes read, or -1 upon failure. */ | |
1282 | if ((bytes_read = read(port->fd, buf, count)) < 0) { | |
1283 | if (errno == EAGAIN) | |
1284 | /* No bytes available. */ | |
1285 | bytes_read = 0; | |
1286 | else | |
1287 | /* This is an actual failure. */ | |
1288 | RETURN_FAIL("read() failed"); | |
1289 | } | |
1290 | RETURN_INT(bytes_read); | |
1291 | #endif | |
1292 | } | |
1293 | ||
1294 | SP_API enum sp_return sp_input_waiting(struct sp_port *port) | |
1295 | { | |
1296 | TRACE("%p", port); | |
1297 | ||
1298 | CHECK_OPEN_PORT(); | |
1299 | ||
1300 | DEBUG_FMT("Checking input bytes waiting on port %s", port->name); | |
1301 | ||
1302 | #ifdef _WIN32 | |
1303 | DWORD errors; | |
1304 | COMSTAT comstat; | |
1305 | ||
1306 | if (ClearCommError(port->hdl, &errors, &comstat) == 0) | |
1307 | RETURN_FAIL("ClearCommError() failed"); | |
1308 | RETURN_INT(comstat.cbInQue); | |
1309 | #else | |
1310 | int bytes_waiting; | |
1311 | if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0) | |
1312 | RETURN_FAIL("TIOCINQ ioctl failed"); | |
1313 | RETURN_INT(bytes_waiting); | |
1314 | #endif | |
1315 | } | |
1316 | ||
1317 | SP_API enum sp_return sp_output_waiting(struct sp_port *port) | |
1318 | { | |
1319 | TRACE("%p", port); | |
1320 | ||
1321 | CHECK_OPEN_PORT(); | |
1322 | ||
1323 | DEBUG_FMT("Checking output bytes waiting on port %s", port->name); | |
1324 | ||
1325 | #ifdef _WIN32 | |
1326 | DWORD errors; | |
1327 | COMSTAT comstat; | |
1328 | ||
1329 | if (ClearCommError(port->hdl, &errors, &comstat) == 0) | |
1330 | RETURN_FAIL("ClearCommError() failed"); | |
1331 | RETURN_INT(comstat.cbOutQue); | |
1332 | #else | |
1333 | int bytes_waiting; | |
1334 | if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0) | |
1335 | RETURN_FAIL("TIOCOUTQ ioctl failed"); | |
1336 | RETURN_INT(bytes_waiting); | |
1337 | #endif | |
1338 | } | |
1339 | ||
1340 | SP_API enum sp_return sp_new_event_set(struct sp_event_set **result_ptr) | |
1341 | { | |
1342 | struct sp_event_set *result; | |
1343 | ||
1344 | TRACE("%p", result_ptr); | |
1345 | ||
1346 | if (!result_ptr) | |
1347 | RETURN_ERROR(SP_ERR_ARG, "Null result"); | |
1348 | ||
1349 | *result_ptr = NULL; | |
1350 | ||
1351 | if (!(result = malloc(sizeof(struct sp_event_set)))) | |
1352 | RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed"); | |
1353 | ||
1354 | memset(result, 0, sizeof(struct sp_event_set)); | |
1355 | ||
1356 | *result_ptr = result; | |
1357 | ||
1358 | RETURN_OK(); | |
1359 | } | |
1360 | ||
1361 | static enum sp_return add_handle(struct sp_event_set *event_set, | |
1362 | event_handle handle, enum sp_event mask) | |
1363 | { | |
1364 | void *new_handles; | |
1365 | enum sp_event *new_masks; | |
1366 | ||
1367 | TRACE("%p, %d, %d", event_set, handle, mask); | |
1368 | ||
1369 | if (!(new_handles = realloc(event_set->handles, | |
1370 | sizeof(event_handle) * (event_set->count + 1)))) | |
1371 | RETURN_ERROR(SP_ERR_MEM, "Handle array realloc() failed"); | |
1372 | ||
1373 | event_set->handles = new_handles; | |
1374 | ||
1375 | if (!(new_masks = realloc(event_set->masks, | |
1376 | sizeof(enum sp_event) * (event_set->count + 1)))) | |
1377 | RETURN_ERROR(SP_ERR_MEM, "Mask array realloc() failed"); | |
1378 | ||
1379 | event_set->masks = new_masks; | |
1380 | ||
1381 | ((event_handle *) event_set->handles)[event_set->count] = handle; | |
1382 | event_set->masks[event_set->count] = mask; | |
1383 | ||
1384 | event_set->count++; | |
1385 | ||
1386 | RETURN_OK(); | |
1387 | } | |
1388 | ||
1389 | SP_API enum sp_return sp_add_port_events(struct sp_event_set *event_set, | |
1390 | const struct sp_port *port, enum sp_event mask) | |
1391 | { | |
1392 | TRACE("%p, %p, %d", event_set, port, mask); | |
1393 | ||
1394 | if (!event_set) | |
1395 | RETURN_ERROR(SP_ERR_ARG, "Null event set"); | |
1396 | ||
1397 | if (!port) | |
1398 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
1399 | ||
1400 | if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR)) | |
1401 | RETURN_ERROR(SP_ERR_ARG, "Invalid event mask"); | |
1402 | ||
1403 | if (!mask) | |
1404 | RETURN_OK(); | |
1405 | ||
1406 | #ifdef _WIN32 | |
1407 | enum sp_event handle_mask; | |
1408 | if ((handle_mask = mask & SP_EVENT_TX_READY)) | |
1409 | TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask)); | |
1410 | if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR))) | |
1411 | TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask)); | |
1412 | #else | |
1413 | TRY(add_handle(event_set, port->fd, mask)); | |
1414 | #endif | |
1415 | ||
1416 | RETURN_OK(); | |
1417 | } | |
1418 | ||
1419 | SP_API void sp_free_event_set(struct sp_event_set *event_set) | |
1420 | { | |
1421 | TRACE("%p", event_set); | |
1422 | ||
1423 | if (!event_set) { | |
1424 | DEBUG("Null event set"); | |
1425 | RETURN(); | |
1426 | } | |
1427 | ||
1428 | DEBUG("Freeing event set"); | |
1429 | ||
1430 | if (event_set->handles) | |
1431 | free(event_set->handles); | |
1432 | if (event_set->masks) | |
1433 | free(event_set->masks); | |
1434 | ||
1435 | free(event_set); | |
1436 | ||
1437 | RETURN(); | |
1438 | } | |
1439 | ||
1440 | SP_API enum sp_return sp_wait(struct sp_event_set *event_set, | |
1441 | unsigned int timeout_ms) | |
1442 | { | |
1443 | TRACE("%p, %d", event_set, timeout_ms); | |
1444 | ||
1445 | if (!event_set) | |
1446 | RETURN_ERROR(SP_ERR_ARG, "Null event set"); | |
1447 | ||
1448 | #ifdef _WIN32 | |
1449 | if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE, | |
1450 | timeout_ms ? timeout_ms : INFINITE) == WAIT_FAILED) | |
1451 | RETURN_FAIL("WaitForMultipleObjects() failed"); | |
1452 | ||
1453 | RETURN_OK(); | |
1454 | #else | |
1455 | struct timeval start, delta, now, end = {0, 0}; | |
1456 | const struct timeval max_delta = { | |
1457 | (INT_MAX / 1000), (INT_MAX % 1000) * 1000}; | |
1458 | int started = 0, timeout_overflow = 0; | |
1459 | int result, timeout_remaining_ms; | |
1460 | struct pollfd *pollfds; | |
1461 | unsigned int i; | |
1462 | ||
1463 | if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count))) | |
1464 | RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed"); | |
1465 | ||
1466 | for (i = 0; i < event_set->count; i++) { | |
1467 | pollfds[i].fd = ((int *) event_set->handles)[i]; | |
1468 | pollfds[i].events = 0; | |
1469 | pollfds[i].revents = 0; | |
1470 | if (event_set->masks[i] & SP_EVENT_RX_READY) | |
1471 | pollfds[i].events |= POLLIN; | |
1472 | if (event_set->masks[i] & SP_EVENT_TX_READY) | |
1473 | pollfds[i].events |= POLLOUT; | |
1474 | if (event_set->masks[i] & SP_EVENT_ERROR) | |
1475 | pollfds[i].events |= POLLERR; | |
1476 | } | |
1477 | ||
1478 | if (timeout_ms) { | |
1479 | /* Get time at start of operation. */ | |
1480 | gettimeofday(&start, NULL); | |
1481 | /* Define duration of timeout. */ | |
1482 | delta.tv_sec = timeout_ms / 1000; | |
1483 | delta.tv_usec = (timeout_ms % 1000) * 1000; | |
1484 | /* Calculate time at which we should give up. */ | |
1485 | timeradd(&start, &delta, &end); | |
1486 | } | |
1487 | ||
1488 | /* Loop until an event occurs. */ | |
1489 | while (1) { | |
1490 | /* | |
1491 | * Check timeout only if we have run poll() at least once, | |
1492 | * to avoid any issues if a short timeout is reached before | |
1493 | * poll() is even run. | |
1494 | */ | |
1495 | if (!timeout_ms) { | |
1496 | timeout_remaining_ms = -1; | |
1497 | } else if (!started) { | |
1498 | timeout_overflow = (timeout_ms > INT_MAX); | |
1499 | timeout_remaining_ms = timeout_overflow ? INT_MAX : timeout_ms; | |
1500 | } else { | |
1501 | gettimeofday(&now, NULL); | |
1502 | if (timercmp(&now, &end, >)) { | |
1503 | DEBUG("Wait timed out"); | |
1504 | break; | |
1505 | } | |
1506 | timersub(&end, &now, &delta); | |
1507 | if ((timeout_overflow = timercmp(&delta, &max_delta, >))) | |
1508 | delta = max_delta; | |
1509 | timeout_remaining_ms = delta.tv_sec * 1000 + delta.tv_usec / 1000; | |
1510 | } | |
1511 | ||
1512 | result = poll(pollfds, event_set->count, timeout_remaining_ms); | |
1513 | started = 1; | |
1514 | ||
1515 | if (result < 0) { | |
1516 | if (errno == EINTR) { | |
1517 | DEBUG("poll() call was interrupted, repeating"); | |
1518 | continue; | |
1519 | } else { | |
1520 | free(pollfds); | |
1521 | RETURN_FAIL("poll() failed"); | |
1522 | } | |
1523 | } else if (result == 0) { | |
1524 | DEBUG("poll() timed out"); | |
1525 | if (!timeout_overflow) | |
1526 | break; | |
1527 | } else { | |
1528 | DEBUG("poll() completed"); | |
1529 | break; | |
1530 | } | |
1531 | } | |
1532 | ||
1533 | free(pollfds); | |
1534 | RETURN_OK(); | |
1535 | #endif | |
1536 | } | |
1537 | ||
1538 | #ifdef USE_TERMIOS_SPEED | |
1539 | static enum sp_return get_baudrate(int fd, int *baudrate) | |
1540 | { | |
1541 | void *data; | |
1542 | ||
1543 | TRACE("%d, %p", fd, baudrate); | |
1544 | ||
1545 | DEBUG("Getting baud rate"); | |
1546 | ||
1547 | if (!(data = malloc(get_termios_size()))) | |
1548 | RETURN_ERROR(SP_ERR_MEM, "termios malloc failed"); | |
1549 | ||
1550 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { | |
1551 | free(data); | |
1552 | RETURN_FAIL("Getting termios failed"); | |
1553 | } | |
1554 | ||
1555 | *baudrate = get_termios_speed(data); | |
1556 | ||
1557 | free(data); | |
1558 | ||
1559 | RETURN_OK(); | |
1560 | } | |
1561 | ||
1562 | static enum sp_return set_baudrate(int fd, int baudrate) | |
1563 | { | |
1564 | void *data; | |
1565 | ||
1566 | TRACE("%d, %d", fd, baudrate); | |
1567 | ||
1568 | DEBUG("Getting baud rate"); | |
1569 | ||
1570 | if (!(data = malloc(get_termios_size()))) | |
1571 | RETURN_ERROR(SP_ERR_MEM, "termios malloc failed"); | |
1572 | ||
1573 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { | |
1574 | free(data); | |
1575 | RETURN_FAIL("Getting termios failed"); | |
1576 | } | |
1577 | ||
1578 | DEBUG("Setting baud rate"); | |
1579 | ||
1580 | set_termios_speed(data, baudrate); | |
1581 | ||
1582 | if (ioctl(fd, get_termios_set_ioctl(), data) < 0) { | |
1583 | free(data); | |
1584 | RETURN_FAIL("Setting termios failed"); | |
1585 | } | |
1586 | ||
1587 | free(data); | |
1588 | ||
1589 | RETURN_OK(); | |
1590 | } | |
1591 | #endif /* USE_TERMIOS_SPEED */ | |
1592 | ||
1593 | #ifdef USE_TERMIOX | |
1594 | static enum sp_return get_flow(int fd, struct port_data *data) | |
1595 | { | |
1596 | void *termx; | |
1597 | ||
1598 | TRACE("%d, %p", fd, data); | |
1599 | ||
1600 | DEBUG("Getting advanced flow control"); | |
1601 | ||
1602 | if (!(termx = malloc(get_termiox_size()))) | |
1603 | RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed"); | |
1604 | ||
1605 | if (ioctl(fd, TCGETX, termx) < 0) { | |
1606 | free(termx); | |
1607 | RETURN_FAIL("Getting termiox failed"); | |
1608 | } | |
1609 | ||
1610 | get_termiox_flow(termx, &data->rts_flow, &data->cts_flow, | |
1611 | &data->dtr_flow, &data->dsr_flow); | |
1612 | ||
1613 | free(termx); | |
1614 | ||
1615 | RETURN_OK(); | |
1616 | } | |
1617 | ||
1618 | static enum sp_return set_flow(int fd, struct port_data *data) | |
1619 | { | |
1620 | void *termx; | |
1621 | ||
1622 | TRACE("%d, %p", fd, data); | |
1623 | ||
1624 | DEBUG("Getting advanced flow control"); | |
1625 | ||
1626 | if (!(termx = malloc(get_termiox_size()))) | |
1627 | RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed"); | |
1628 | ||
1629 | if (ioctl(fd, TCGETX, termx) < 0) { | |
1630 | free(termx); | |
1631 | RETURN_FAIL("Getting termiox failed"); | |
1632 | } | |
1633 | ||
1634 | DEBUG("Setting advanced flow control"); | |
1635 | ||
1636 | set_termiox_flow(termx, data->rts_flow, data->cts_flow, | |
1637 | data->dtr_flow, data->dsr_flow); | |
1638 | ||
1639 | if (ioctl(fd, TCSETX, termx) < 0) { | |
1640 | free(termx); | |
1641 | RETURN_FAIL("Setting termiox failed"); | |
1642 | } | |
1643 | ||
1644 | free(termx); | |
1645 | ||
1646 | RETURN_OK(); | |
1647 | } | |
1648 | #endif /* USE_TERMIOX */ | |
1649 | ||
1650 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, | |
1651 | struct sp_port_config *config) | |
1652 | { | |
1653 | unsigned int i; | |
1654 | ||
1655 | TRACE("%p, %p, %p", port, data, config); | |
1656 | ||
1657 | DEBUG_FMT("Getting configuration for port %s", port->name); | |
1658 | ||
1659 | #ifdef _WIN32 | |
1660 | if (!GetCommState(port->hdl, &data->dcb)) | |
1661 | RETURN_FAIL("GetCommState() failed"); | |
1662 | ||
1663 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1664 | if (data->dcb.BaudRate == std_baudrates[i].index) { | |
1665 | config->baudrate = std_baudrates[i].value; | |
1666 | break; | |
1667 | } | |
1668 | } | |
1669 | ||
1670 | if (i == NUM_STD_BAUDRATES) | |
1671 | /* BaudRate field can be either an index or a custom baud rate. */ | |
1672 | config->baudrate = data->dcb.BaudRate; | |
1673 | ||
1674 | config->bits = data->dcb.ByteSize; | |
1675 | ||
1676 | if (data->dcb.fParity) | |
1677 | switch (data->dcb.Parity) { | |
1678 | case NOPARITY: | |
1679 | config->parity = SP_PARITY_NONE; | |
1680 | break; | |
1681 | case ODDPARITY: | |
1682 | config->parity = SP_PARITY_ODD; | |
1683 | break; | |
1684 | case EVENPARITY: | |
1685 | config->parity = SP_PARITY_EVEN; | |
1686 | break; | |
1687 | case MARKPARITY: | |
1688 | config->parity = SP_PARITY_MARK; | |
1689 | break; | |
1690 | case SPACEPARITY: | |
1691 | config->parity = SP_PARITY_SPACE; | |
1692 | break; | |
1693 | default: | |
1694 | config->parity = -1; | |
1695 | } | |
1696 | else | |
1697 | config->parity = SP_PARITY_NONE; | |
1698 | ||
1699 | switch (data->dcb.StopBits) { | |
1700 | case ONESTOPBIT: | |
1701 | config->stopbits = 1; | |
1702 | break; | |
1703 | case TWOSTOPBITS: | |
1704 | config->stopbits = 2; | |
1705 | break; | |
1706 | default: | |
1707 | config->stopbits = -1; | |
1708 | } | |
1709 | ||
1710 | switch (data->dcb.fRtsControl) { | |
1711 | case RTS_CONTROL_DISABLE: | |
1712 | config->rts = SP_RTS_OFF; | |
1713 | break; | |
1714 | case RTS_CONTROL_ENABLE: | |
1715 | config->rts = SP_RTS_ON; | |
1716 | break; | |
1717 | case RTS_CONTROL_HANDSHAKE: | |
1718 | config->rts = SP_RTS_FLOW_CONTROL; | |
1719 | break; | |
1720 | default: | |
1721 | config->rts = -1; | |
1722 | } | |
1723 | ||
1724 | config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
1725 | ||
1726 | switch (data->dcb.fDtrControl) { | |
1727 | case DTR_CONTROL_DISABLE: | |
1728 | config->dtr = SP_DTR_OFF; | |
1729 | break; | |
1730 | case DTR_CONTROL_ENABLE: | |
1731 | config->dtr = SP_DTR_ON; | |
1732 | break; | |
1733 | case DTR_CONTROL_HANDSHAKE: | |
1734 | config->dtr = SP_DTR_FLOW_CONTROL; | |
1735 | break; | |
1736 | default: | |
1737 | config->dtr = -1; | |
1738 | } | |
1739 | ||
1740 | config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
1741 | ||
1742 | if (data->dcb.fInX) { | |
1743 | if (data->dcb.fOutX) | |
1744 | config->xon_xoff = SP_XONXOFF_INOUT; | |
1745 | else | |
1746 | config->xon_xoff = SP_XONXOFF_IN; | |
1747 | } else { | |
1748 | if (data->dcb.fOutX) | |
1749 | config->xon_xoff = SP_XONXOFF_OUT; | |
1750 | else | |
1751 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
1752 | } | |
1753 | ||
1754 | #else // !_WIN32 | |
1755 | ||
1756 | if (tcgetattr(port->fd, &data->term) < 0) | |
1757 | RETURN_FAIL("tcgetattr() failed"); | |
1758 | ||
1759 | if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0) | |
1760 | RETURN_FAIL("TIOCMGET ioctl failed"); | |
1761 | ||
1762 | #ifdef USE_TERMIOX | |
1763 | int ret = get_flow(port->fd, data); | |
1764 | ||
1765 | if (ret == SP_ERR_FAIL && errno == EINVAL) | |
1766 | data->termiox_supported = 0; | |
1767 | else if (ret < 0) | |
1768 | RETURN_CODEVAL(ret); | |
1769 | else | |
1770 | data->termiox_supported = 1; | |
1771 | #else | |
1772 | data->termiox_supported = 0; | |
1773 | #endif | |
1774 | ||
1775 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1776 | if (cfgetispeed(&data->term) == std_baudrates[i].index) { | |
1777 | config->baudrate = std_baudrates[i].value; | |
1778 | break; | |
1779 | } | |
1780 | } | |
1781 | ||
1782 | if (i == NUM_STD_BAUDRATES) { | |
1783 | #ifdef __APPLE__ | |
1784 | config->baudrate = (int)data->term.c_ispeed; | |
1785 | #elif defined(USE_TERMIOS_SPEED) | |
1786 | TRY(get_baudrate(port->fd, &config->baudrate)); | |
1787 | #else | |
1788 | config->baudrate = -1; | |
1789 | #endif | |
1790 | } | |
1791 | ||
1792 | switch (data->term.c_cflag & CSIZE) { | |
1793 | case CS8: | |
1794 | config->bits = 8; | |
1795 | break; | |
1796 | case CS7: | |
1797 | config->bits = 7; | |
1798 | break; | |
1799 | case CS6: | |
1800 | config->bits = 6; | |
1801 | break; | |
1802 | case CS5: | |
1803 | config->bits = 5; | |
1804 | break; | |
1805 | default: | |
1806 | config->bits = -1; | |
1807 | } | |
1808 | ||
1809 | if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR)) | |
1810 | config->parity = SP_PARITY_NONE; | |
1811 | else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR)) | |
1812 | config->parity = -1; | |
1813 | #ifdef CMSPAR | |
1814 | else if (data->term.c_cflag & CMSPAR) | |
1815 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE; | |
1816 | #endif | |
1817 | else | |
1818 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN; | |
1819 | ||
1820 | config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1; | |
1821 | ||
1822 | if (data->term.c_cflag & CRTSCTS) { | |
1823 | config->rts = SP_RTS_FLOW_CONTROL; | |
1824 | config->cts = SP_CTS_FLOW_CONTROL; | |
1825 | } else { | |
1826 | if (data->termiox_supported && data->rts_flow) | |
1827 | config->rts = SP_RTS_FLOW_CONTROL; | |
1828 | else | |
1829 | config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; | |
1830 | ||
1831 | config->cts = (data->termiox_supported && data->cts_flow) ? | |
1832 | SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
1833 | } | |
1834 | ||
1835 | if (data->termiox_supported && data->dtr_flow) | |
1836 | config->dtr = SP_DTR_FLOW_CONTROL; | |
1837 | else | |
1838 | config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; | |
1839 | ||
1840 | config->dsr = (data->termiox_supported && data->dsr_flow) ? | |
1841 | SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
1842 | ||
1843 | if (data->term.c_iflag & IXOFF) { | |
1844 | if (data->term.c_iflag & IXON) | |
1845 | config->xon_xoff = SP_XONXOFF_INOUT; | |
1846 | else | |
1847 | config->xon_xoff = SP_XONXOFF_IN; | |
1848 | } else { | |
1849 | if (data->term.c_iflag & IXON) | |
1850 | config->xon_xoff = SP_XONXOFF_OUT; | |
1851 | else | |
1852 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
1853 | } | |
1854 | #endif | |
1855 | ||
1856 | RETURN_OK(); | |
1857 | } | |
1858 | ||
1859 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
1860 | const struct sp_port_config *config) | |
1861 | { | |
1862 | unsigned int i; | |
1863 | #ifdef __APPLE__ | |
1864 | BAUD_TYPE baud_nonstd; | |
1865 | ||
1866 | baud_nonstd = B0; | |
1867 | #endif | |
1868 | #ifdef USE_TERMIOS_SPEED | |
1869 | int baud_nonstd = 0; | |
1870 | #endif | |
1871 | ||
1872 | TRACE("%p, %p, %p", port, data, config); | |
1873 | ||
1874 | DEBUG_FMT("Setting configuration for port %s", port->name); | |
1875 | ||
1876 | #ifdef _WIN32 | |
1877 | if (config->baudrate >= 0) { | |
1878 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1879 | if (config->baudrate == std_baudrates[i].value) { | |
1880 | data->dcb.BaudRate = std_baudrates[i].index; | |
1881 | break; | |
1882 | } | |
1883 | } | |
1884 | ||
1885 | if (i == NUM_STD_BAUDRATES) | |
1886 | data->dcb.BaudRate = config->baudrate; | |
1887 | } | |
1888 | ||
1889 | if (config->bits >= 0) | |
1890 | data->dcb.ByteSize = config->bits; | |
1891 | ||
1892 | if (config->parity >= 0) { | |
1893 | switch (config->parity) { | |
1894 | case SP_PARITY_NONE: | |
1895 | data->dcb.Parity = NOPARITY; | |
1896 | break; | |
1897 | case SP_PARITY_ODD: | |
1898 | data->dcb.Parity = ODDPARITY; | |
1899 | break; | |
1900 | case SP_PARITY_EVEN: | |
1901 | data->dcb.Parity = EVENPARITY; | |
1902 | break; | |
1903 | case SP_PARITY_MARK: | |
1904 | data->dcb.Parity = MARKPARITY; | |
1905 | break; | |
1906 | case SP_PARITY_SPACE: | |
1907 | data->dcb.Parity = SPACEPARITY; | |
1908 | break; | |
1909 | default: | |
1910 | RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting"); | |
1911 | } | |
1912 | } | |
1913 | ||
1914 | if (config->stopbits >= 0) { | |
1915 | switch (config->stopbits) { | |
1916 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ | |
1917 | case 1: | |
1918 | data->dcb.StopBits = ONESTOPBIT; | |
1919 | break; | |
1920 | case 2: | |
1921 | data->dcb.StopBits = TWOSTOPBITS; | |
1922 | break; | |
1923 | default: | |
1924 | RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting"); | |
1925 | } | |
1926 | } | |
1927 | ||
1928 | if (config->rts >= 0) { | |
1929 | switch (config->rts) { | |
1930 | case SP_RTS_OFF: | |
1931 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
1932 | break; | |
1933 | case SP_RTS_ON: | |
1934 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
1935 | break; | |
1936 | case SP_RTS_FLOW_CONTROL: | |
1937 | data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
1938 | break; | |
1939 | default: | |
1940 | RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting"); | |
1941 | } | |
1942 | } | |
1943 | ||
1944 | if (config->cts >= 0) { | |
1945 | switch (config->cts) { | |
1946 | case SP_CTS_IGNORE: | |
1947 | data->dcb.fOutxCtsFlow = FALSE; | |
1948 | break; | |
1949 | case SP_CTS_FLOW_CONTROL: | |
1950 | data->dcb.fOutxCtsFlow = TRUE; | |
1951 | break; | |
1952 | default: | |
1953 | RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting"); | |
1954 | } | |
1955 | } | |
1956 | ||
1957 | if (config->dtr >= 0) { | |
1958 | switch (config->dtr) { | |
1959 | case SP_DTR_OFF: | |
1960 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
1961 | break; | |
1962 | case SP_DTR_ON: | |
1963 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
1964 | break; | |
1965 | case SP_DTR_FLOW_CONTROL: | |
1966 | data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; | |
1967 | break; | |
1968 | default: | |
1969 | RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting"); | |
1970 | } | |
1971 | } | |
1972 | ||
1973 | if (config->dsr >= 0) { | |
1974 | switch (config->dsr) { | |
1975 | case SP_DSR_IGNORE: | |
1976 | data->dcb.fOutxDsrFlow = FALSE; | |
1977 | break; | |
1978 | case SP_DSR_FLOW_CONTROL: | |
1979 | data->dcb.fOutxDsrFlow = TRUE; | |
1980 | break; | |
1981 | default: | |
1982 | RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting"); | |
1983 | } | |
1984 | } | |
1985 | ||
1986 | if (config->xon_xoff >= 0) { | |
1987 | switch (config->xon_xoff) { | |
1988 | case SP_XONXOFF_DISABLED: | |
1989 | data->dcb.fInX = FALSE; | |
1990 | data->dcb.fOutX = FALSE; | |
1991 | break; | |
1992 | case SP_XONXOFF_IN: | |
1993 | data->dcb.fInX = TRUE; | |
1994 | data->dcb.fOutX = FALSE; | |
1995 | break; | |
1996 | case SP_XONXOFF_OUT: | |
1997 | data->dcb.fInX = FALSE; | |
1998 | data->dcb.fOutX = TRUE; | |
1999 | break; | |
2000 | case SP_XONXOFF_INOUT: | |
2001 | data->dcb.fInX = TRUE; | |
2002 | data->dcb.fOutX = TRUE; | |
2003 | break; | |
2004 | default: | |
2005 | RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting"); | |
2006 | } | |
2007 | } | |
2008 | ||
2009 | if (!SetCommState(port->hdl, &data->dcb)) | |
2010 | RETURN_FAIL("SetCommState() failed"); | |
2011 | ||
2012 | #else /* !_WIN32 */ | |
2013 | ||
2014 | int controlbits; | |
2015 | ||
2016 | if (config->baudrate >= 0) { | |
2017 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
2018 | if (config->baudrate == std_baudrates[i].value) { | |
2019 | if (cfsetospeed(&data->term, std_baudrates[i].index) < 0) | |
2020 | RETURN_FAIL("cfsetospeed() failed"); | |
2021 | ||
2022 | if (cfsetispeed(&data->term, std_baudrates[i].index) < 0) | |
2023 | RETURN_FAIL("cfsetispeed() failed"); | |
2024 | break; | |
2025 | } | |
2026 | } | |
2027 | ||
2028 | /* Non-standard baud rate */ | |
2029 | if (i == NUM_STD_BAUDRATES) { | |
2030 | #ifdef __APPLE__ | |
2031 | /* Set "dummy" baud rate. */ | |
2032 | if (cfsetspeed(&data->term, B9600) < 0) | |
2033 | RETURN_FAIL("cfsetspeed() failed"); | |
2034 | baud_nonstd = config->baudrate; | |
2035 | #elif defined(USE_TERMIOS_SPEED) | |
2036 | baud_nonstd = 1; | |
2037 | #else | |
2038 | RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported"); | |
2039 | #endif | |
2040 | } | |
2041 | } | |
2042 | ||
2043 | if (config->bits >= 0) { | |
2044 | data->term.c_cflag &= ~CSIZE; | |
2045 | switch (config->bits) { | |
2046 | case 8: | |
2047 | data->term.c_cflag |= CS8; | |
2048 | break; | |
2049 | case 7: | |
2050 | data->term.c_cflag |= CS7; | |
2051 | break; | |
2052 | case 6: | |
2053 | data->term.c_cflag |= CS6; | |
2054 | break; | |
2055 | case 5: | |
2056 | data->term.c_cflag |= CS5; | |
2057 | break; | |
2058 | default: | |
2059 | RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting"); | |
2060 | } | |
2061 | } | |
2062 | ||
2063 | if (config->parity >= 0) { | |
2064 | data->term.c_iflag &= ~IGNPAR; | |
2065 | data->term.c_cflag &= ~(PARENB | PARODD); | |
2066 | #ifdef CMSPAR | |
2067 | data->term.c_cflag &= ~CMSPAR; | |
2068 | #endif | |
2069 | switch (config->parity) { | |
2070 | case SP_PARITY_NONE: | |
2071 | data->term.c_iflag |= IGNPAR; | |
2072 | break; | |
2073 | case SP_PARITY_EVEN: | |
2074 | data->term.c_cflag |= PARENB; | |
2075 | break; | |
2076 | case SP_PARITY_ODD: | |
2077 | data->term.c_cflag |= PARENB | PARODD; | |
2078 | break; | |
2079 | #ifdef CMSPAR | |
2080 | case SP_PARITY_MARK: | |
2081 | data->term.c_cflag |= PARENB | PARODD; | |
2082 | data->term.c_cflag |= CMSPAR; | |
2083 | break; | |
2084 | case SP_PARITY_SPACE: | |
2085 | data->term.c_cflag |= PARENB; | |
2086 | data->term.c_cflag |= CMSPAR; | |
2087 | break; | |
2088 | #else | |
2089 | case SP_PARITY_MARK: | |
2090 | case SP_PARITY_SPACE: | |
2091 | RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported"); | |
2092 | #endif | |
2093 | default: | |
2094 | RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting"); | |
2095 | } | |
2096 | } | |
2097 | ||
2098 | if (config->stopbits >= 0) { | |
2099 | data->term.c_cflag &= ~CSTOPB; | |
2100 | switch (config->stopbits) { | |
2101 | case 1: | |
2102 | data->term.c_cflag &= ~CSTOPB; | |
2103 | break; | |
2104 | case 2: | |
2105 | data->term.c_cflag |= CSTOPB; | |
2106 | break; | |
2107 | default: | |
2108 | RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting"); | |
2109 | } | |
2110 | } | |
2111 | ||
2112 | if (config->rts >= 0 || config->cts >= 0) { | |
2113 | if (data->termiox_supported) { | |
2114 | data->rts_flow = data->cts_flow = 0; | |
2115 | switch (config->rts) { | |
2116 | case SP_RTS_OFF: | |
2117 | case SP_RTS_ON: | |
2118 | controlbits = TIOCM_RTS; | |
2119 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
2120 | RETURN_FAIL("Setting RTS signal level failed"); | |
2121 | break; | |
2122 | case SP_RTS_FLOW_CONTROL: | |
2123 | data->rts_flow = 1; | |
2124 | break; | |
2125 | default: | |
2126 | break; | |
2127 | } | |
2128 | if (config->cts == SP_CTS_FLOW_CONTROL) | |
2129 | data->cts_flow = 1; | |
2130 | ||
2131 | if (data->rts_flow && data->cts_flow) | |
2132 | data->term.c_iflag |= CRTSCTS; | |
2133 | else | |
2134 | data->term.c_iflag &= ~CRTSCTS; | |
2135 | } else { | |
2136 | /* Asymmetric use of RTS/CTS not supported. */ | |
2137 | if (data->term.c_iflag & CRTSCTS) { | |
2138 | /* Flow control can only be disabled for both RTS & CTS together. */ | |
2139 | if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) { | |
2140 | if (config->cts != SP_CTS_IGNORE) | |
2141 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together"); | |
2142 | } | |
2143 | if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) { | |
2144 | if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL) | |
2145 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together"); | |
2146 | } | |
2147 | } else { | |
2148 | /* Flow control can only be enabled for both RTS & CTS together. */ | |
2149 | if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) || | |
2150 | ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL))) | |
2151 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together"); | |
2152 | } | |
2153 | ||
2154 | if (config->rts >= 0) { | |
2155 | if (config->rts == SP_RTS_FLOW_CONTROL) { | |
2156 | data->term.c_iflag |= CRTSCTS; | |
2157 | } else { | |
2158 | controlbits = TIOCM_RTS; | |
2159 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, | |
2160 | &controlbits) < 0) | |
2161 | RETURN_FAIL("Setting RTS signal level failed"); | |
2162 | } | |
2163 | } | |
2164 | } | |
2165 | } | |
2166 | ||
2167 | if (config->dtr >= 0 || config->dsr >= 0) { | |
2168 | if (data->termiox_supported) { | |
2169 | data->dtr_flow = data->dsr_flow = 0; | |
2170 | switch (config->dtr) { | |
2171 | case SP_DTR_OFF: | |
2172 | case SP_DTR_ON: | |
2173 | controlbits = TIOCM_DTR; | |
2174 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
2175 | RETURN_FAIL("Setting DTR signal level failed"); | |
2176 | break; | |
2177 | case SP_DTR_FLOW_CONTROL: | |
2178 | data->dtr_flow = 1; | |
2179 | break; | |
2180 | default: | |
2181 | break; | |
2182 | } | |
2183 | if (config->dsr == SP_DSR_FLOW_CONTROL) | |
2184 | data->dsr_flow = 1; | |
2185 | } else { | |
2186 | /* DTR/DSR flow control not supported. */ | |
2187 | if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL) | |
2188 | RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported"); | |
2189 | ||
2190 | if (config->dtr >= 0) { | |
2191 | controlbits = TIOCM_DTR; | |
2192 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, | |
2193 | &controlbits) < 0) | |
2194 | RETURN_FAIL("Setting DTR signal level failed"); | |
2195 | } | |
2196 | } | |
2197 | } | |
2198 | ||
2199 | if (config->xon_xoff >= 0) { | |
2200 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
2201 | switch (config->xon_xoff) { | |
2202 | case SP_XONXOFF_DISABLED: | |
2203 | break; | |
2204 | case SP_XONXOFF_IN: | |
2205 | data->term.c_iflag |= IXOFF; | |
2206 | break; | |
2207 | case SP_XONXOFF_OUT: | |
2208 | data->term.c_iflag |= IXON | IXANY; | |
2209 | break; | |
2210 | case SP_XONXOFF_INOUT: | |
2211 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
2212 | break; | |
2213 | default: | |
2214 | RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting"); | |
2215 | } | |
2216 | } | |
2217 | ||
2218 | if (tcsetattr(port->fd, TCSANOW, &data->term) < 0) | |
2219 | RETURN_FAIL("tcsetattr() failed"); | |
2220 | ||
2221 | #ifdef __APPLE__ | |
2222 | if (baud_nonstd != B0) { | |
2223 | if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1) | |
2224 | RETURN_FAIL("IOSSIOSPEED ioctl failed"); | |
2225 | /* | |
2226 | * Set baud rates in data->term to correct, but incompatible | |
2227 | * with tcsetattr() value, same as delivered by tcgetattr(). | |
2228 | */ | |
2229 | if (cfsetspeed(&data->term, baud_nonstd) < 0) | |
2230 | RETURN_FAIL("cfsetspeed() failed"); | |
2231 | } | |
2232 | #elif defined(__linux__) | |
2233 | #ifdef USE_TERMIOS_SPEED | |
2234 | if (baud_nonstd) | |
2235 | TRY(set_baudrate(port->fd, config->baudrate)); | |
2236 | #endif | |
2237 | #ifdef USE_TERMIOX | |
2238 | if (data->termiox_supported) | |
2239 | TRY(set_flow(port->fd, data)); | |
2240 | #endif | |
2241 | #endif | |
2242 | ||
2243 | #endif /* !_WIN32 */ | |
2244 | ||
2245 | RETURN_OK(); | |
2246 | } | |
2247 | ||
2248 | SP_API enum sp_return sp_new_config(struct sp_port_config **config_ptr) | |
2249 | { | |
2250 | struct sp_port_config *config; | |
2251 | ||
2252 | TRACE("%p", config_ptr); | |
2253 | ||
2254 | if (!config_ptr) | |
2255 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
2256 | ||
2257 | *config_ptr = NULL; | |
2258 | ||
2259 | if (!(config = malloc(sizeof(struct sp_port_config)))) | |
2260 | RETURN_ERROR(SP_ERR_MEM, "Config malloc failed"); | |
2261 | ||
2262 | config->baudrate = -1; | |
2263 | config->bits = -1; | |
2264 | config->parity = -1; | |
2265 | config->stopbits = -1; | |
2266 | config->rts = -1; | |
2267 | config->cts = -1; | |
2268 | config->dtr = -1; | |
2269 | config->dsr = -1; | |
2270 | ||
2271 | *config_ptr = config; | |
2272 | ||
2273 | RETURN_OK(); | |
2274 | } | |
2275 | ||
2276 | SP_API void sp_free_config(struct sp_port_config *config) | |
2277 | { | |
2278 | TRACE("%p", config); | |
2279 | ||
2280 | if (!config) | |
2281 | DEBUG("Null config"); | |
2282 | else | |
2283 | free(config); | |
2284 | ||
2285 | RETURN(); | |
2286 | } | |
2287 | ||
2288 | SP_API enum sp_return sp_get_config(struct sp_port *port, | |
2289 | struct sp_port_config *config) | |
2290 | { | |
2291 | struct port_data data; | |
2292 | ||
2293 | TRACE("%p, %p", port, config); | |
2294 | ||
2295 | CHECK_OPEN_PORT(); | |
2296 | ||
2297 | if (!config) | |
2298 | RETURN_ERROR(SP_ERR_ARG, "Null config"); | |
2299 | ||
2300 | TRY(get_config(port, &data, config)); | |
2301 | ||
2302 | RETURN_OK(); | |
2303 | } | |
2304 | ||
2305 | SP_API enum sp_return sp_set_config(struct sp_port *port, | |
2306 | const struct sp_port_config *config) | |
2307 | { | |
2308 | struct port_data data; | |
2309 | struct sp_port_config prev_config; | |
2310 | ||
2311 | TRACE("%p, %p", port, config); | |
2312 | ||
2313 | CHECK_OPEN_PORT(); | |
2314 | ||
2315 | if (!config) | |
2316 | RETURN_ERROR(SP_ERR_ARG, "Null config"); | |
2317 | ||
2318 | TRY(get_config(port, &data, &prev_config)); | |
2319 | TRY(set_config(port, &data, config)); | |
2320 | ||
2321 | RETURN_OK(); | |
2322 | } | |
2323 | ||
2324 | #define CREATE_ACCESSORS(x, type) \ | |
2325 | SP_API enum sp_return sp_set_##x(struct sp_port *port, type x) { \ | |
2326 | struct port_data data; \ | |
2327 | struct sp_port_config config; \ | |
2328 | TRACE("%p, %d", port, x); \ | |
2329 | CHECK_OPEN_PORT(); \ | |
2330 | TRY(get_config(port, &data, &config)); \ | |
2331 | config.x = x; \ | |
2332 | TRY(set_config(port, &data, &config)); \ | |
2333 | RETURN_OK(); \ | |
2334 | } \ | |
2335 | SP_API enum sp_return sp_get_config_##x(const struct sp_port_config *config, \ | |
2336 | type *x) { \ | |
2337 | TRACE("%p, %p", config, x); \ | |
2338 | if (!x) \ | |
2339 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); \ | |
2340 | if (!config) \ | |
2341 | RETURN_ERROR(SP_ERR_ARG, "Null config"); \ | |
2342 | *x = config->x; \ | |
2343 | RETURN_OK(); \ | |
2344 | } \ | |
2345 | SP_API enum sp_return sp_set_config_##x(struct sp_port_config *config, \ | |
2346 | type x) { \ | |
2347 | TRACE("%p, %d", config, x); \ | |
2348 | if (!config) \ | |
2349 | RETURN_ERROR(SP_ERR_ARG, "Null config"); \ | |
2350 | config->x = x; \ | |
2351 | RETURN_OK(); \ | |
2352 | } | |
2353 | ||
2354 | CREATE_ACCESSORS(baudrate, int) | |
2355 | CREATE_ACCESSORS(bits, int) | |
2356 | CREATE_ACCESSORS(parity, enum sp_parity) | |
2357 | CREATE_ACCESSORS(stopbits, int) | |
2358 | CREATE_ACCESSORS(rts, enum sp_rts) | |
2359 | CREATE_ACCESSORS(cts, enum sp_cts) | |
2360 | CREATE_ACCESSORS(dtr, enum sp_dtr) | |
2361 | CREATE_ACCESSORS(dsr, enum sp_dsr) | |
2362 | CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff) | |
2363 | ||
2364 | SP_API enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, | |
2365 | enum sp_flowcontrol flowcontrol) | |
2366 | { | |
2367 | if (!config) | |
2368 | RETURN_ERROR(SP_ERR_ARG, "Null configuration"); | |
2369 | ||
2370 | if (flowcontrol > SP_FLOWCONTROL_DTRDSR) | |
2371 | RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting"); | |
2372 | ||
2373 | if (flowcontrol == SP_FLOWCONTROL_XONXOFF) | |
2374 | config->xon_xoff = SP_XONXOFF_INOUT; | |
2375 | else | |
2376 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
2377 | ||
2378 | if (flowcontrol == SP_FLOWCONTROL_RTSCTS) { | |
2379 | config->rts = SP_RTS_FLOW_CONTROL; | |
2380 | config->cts = SP_CTS_FLOW_CONTROL; | |
2381 | } else { | |
2382 | if (config->rts == SP_RTS_FLOW_CONTROL) | |
2383 | config->rts = SP_RTS_ON; | |
2384 | config->cts = SP_CTS_IGNORE; | |
2385 | } | |
2386 | ||
2387 | if (flowcontrol == SP_FLOWCONTROL_DTRDSR) { | |
2388 | config->dtr = SP_DTR_FLOW_CONTROL; | |
2389 | config->dsr = SP_DSR_FLOW_CONTROL; | |
2390 | } else { | |
2391 | if (config->dtr == SP_DTR_FLOW_CONTROL) | |
2392 | config->dtr = SP_DTR_ON; | |
2393 | config->dsr = SP_DSR_IGNORE; | |
2394 | } | |
2395 | ||
2396 | RETURN_OK(); | |
2397 | } | |
2398 | ||
2399 | SP_API enum sp_return sp_set_flowcontrol(struct sp_port *port, | |
2400 | enum sp_flowcontrol flowcontrol) | |
2401 | { | |
2402 | struct port_data data; | |
2403 | struct sp_port_config config; | |
2404 | ||
2405 | TRACE("%p, %d", port, flowcontrol); | |
2406 | ||
2407 | CHECK_OPEN_PORT(); | |
2408 | ||
2409 | TRY(get_config(port, &data, &config)); | |
2410 | ||
2411 | TRY(sp_set_config_flowcontrol(&config, flowcontrol)); | |
2412 | ||
2413 | TRY(set_config(port, &data, &config)); | |
2414 | ||
2415 | RETURN_OK(); | |
2416 | } | |
2417 | ||
2418 | SP_API enum sp_return sp_get_signals(struct sp_port *port, | |
2419 | enum sp_signal *signals) | |
2420 | { | |
2421 | TRACE("%p, %p", port, signals); | |
2422 | ||
2423 | CHECK_OPEN_PORT(); | |
2424 | ||
2425 | if (!signals) | |
2426 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
2427 | ||
2428 | DEBUG_FMT("Getting control signals for port %s", port->name); | |
2429 | ||
2430 | *signals = 0; | |
2431 | #ifdef _WIN32 | |
2432 | DWORD bits; | |
2433 | if (GetCommModemStatus(port->hdl, &bits) == 0) | |
2434 | RETURN_FAIL("GetCommModemStatus() failed"); | |
2435 | if (bits & MS_CTS_ON) | |
2436 | *signals |= SP_SIG_CTS; | |
2437 | if (bits & MS_DSR_ON) | |
2438 | *signals |= SP_SIG_DSR; | |
2439 | if (bits & MS_RLSD_ON) | |
2440 | *signals |= SP_SIG_DCD; | |
2441 | if (bits & MS_RING_ON) | |
2442 | *signals |= SP_SIG_RI; | |
2443 | #else | |
2444 | int bits; | |
2445 | if (ioctl(port->fd, TIOCMGET, &bits) < 0) | |
2446 | RETURN_FAIL("TIOCMGET ioctl failed"); | |
2447 | if (bits & TIOCM_CTS) | |
2448 | *signals |= SP_SIG_CTS; | |
2449 | if (bits & TIOCM_DSR) | |
2450 | *signals |= SP_SIG_DSR; | |
2451 | if (bits & TIOCM_CAR) | |
2452 | *signals |= SP_SIG_DCD; | |
2453 | if (bits & TIOCM_RNG) | |
2454 | *signals |= SP_SIG_RI; | |
2455 | #endif | |
2456 | RETURN_OK(); | |
2457 | } | |
2458 | ||
2459 | SP_API enum sp_return sp_start_break(struct sp_port *port) | |
2460 | { | |
2461 | TRACE("%p", port); | |
2462 | ||
2463 | CHECK_OPEN_PORT(); | |
2464 | #ifdef _WIN32 | |
2465 | if (SetCommBreak(port->hdl) == 0) | |
2466 | RETURN_FAIL("SetCommBreak() failed"); | |
2467 | #else | |
2468 | if (ioctl(port->fd, TIOCSBRK, 1) < 0) | |
2469 | RETURN_FAIL("TIOCSBRK ioctl failed"); | |
2470 | #endif | |
2471 | ||
2472 | RETURN_OK(); | |
2473 | } | |
2474 | ||
2475 | SP_API enum sp_return sp_end_break(struct sp_port *port) | |
2476 | { | |
2477 | TRACE("%p", port); | |
2478 | ||
2479 | CHECK_OPEN_PORT(); | |
2480 | #ifdef _WIN32 | |
2481 | if (ClearCommBreak(port->hdl) == 0) | |
2482 | RETURN_FAIL("ClearCommBreak() failed"); | |
2483 | #else | |
2484 | if (ioctl(port->fd, TIOCCBRK, 1) < 0) | |
2485 | RETURN_FAIL("TIOCCBRK ioctl failed"); | |
2486 | #endif | |
2487 | ||
2488 | RETURN_OK(); | |
2489 | } | |
2490 | ||
2491 | SP_API int sp_last_error_code(void) | |
2492 | { | |
2493 | TRACE_VOID(); | |
2494 | #ifdef _WIN32 | |
2495 | RETURN_INT(GetLastError()); | |
2496 | #else | |
2497 | RETURN_INT(errno); | |
2498 | #endif | |
2499 | } | |
2500 | ||
2501 | SP_API char *sp_last_error_message(void) | |
2502 | { | |
2503 | TRACE_VOID(); | |
2504 | ||
2505 | #ifdef _WIN32 | |
2506 | TCHAR *message; | |
2507 | DWORD error = GetLastError(); | |
2508 | ||
2509 | DWORD length = FormatMessage( | |
2510 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
2511 | FORMAT_MESSAGE_FROM_SYSTEM | | |
2512 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
2513 | NULL, | |
2514 | error, | |
2515 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
2516 | (LPTSTR) &message, | |
2517 | 0, NULL ); | |
2518 | ||
2519 | if (length >= 2 && message[length - 2] == '\r') | |
2520 | message[length - 2] = '\0'; | |
2521 | ||
2522 | RETURN_STRING(message); | |
2523 | #else | |
2524 | RETURN_STRING(strerror(errno)); | |
2525 | #endif | |
2526 | } | |
2527 | ||
2528 | SP_API void sp_free_error_message(char *message) | |
2529 | { | |
2530 | TRACE("%s", message); | |
2531 | ||
2532 | #ifdef _WIN32 | |
2533 | LocalFree(message); | |
2534 | #else | |
2535 | (void)message; | |
2536 | #endif | |
2537 | ||
2538 | RETURN(); | |
2539 | } | |
2540 | ||
2541 | SP_API void sp_set_debug_handler(void (*handler)(const char *format, ...)) | |
2542 | { | |
2543 | TRACE("%p", handler); | |
2544 | ||
2545 | sp_debug_handler = handler; | |
2546 | ||
2547 | RETURN(); | |
2548 | } | |
2549 | ||
2550 | SP_API void sp_default_debug_handler(const char *format, ...) | |
2551 | { | |
2552 | va_list args; | |
2553 | va_start(args, format); | |
2554 | if (getenv("LIBSERIALPORT_DEBUG")) { | |
2555 | fputs("sp: ", stderr); | |
2556 | vfprintf(stderr, format, args); | |
2557 | } | |
2558 | va_end(args); | |
2559 | } | |
2560 | ||
2561 | SP_API int sp_get_major_package_version(void) | |
2562 | { | |
2563 | return SP_PACKAGE_VERSION_MAJOR; | |
2564 | } | |
2565 | ||
2566 | SP_API int sp_get_minor_package_version(void) | |
2567 | { | |
2568 | return SP_PACKAGE_VERSION_MINOR; | |
2569 | } | |
2570 | ||
2571 | SP_API int sp_get_micro_package_version(void) | |
2572 | { | |
2573 | return SP_PACKAGE_VERSION_MICRO; | |
2574 | } | |
2575 | ||
2576 | SP_API const char *sp_get_package_version_string(void) | |
2577 | { | |
2578 | return SP_PACKAGE_VERSION_STRING; | |
2579 | } | |
2580 | ||
2581 | SP_API int sp_get_current_lib_version(void) | |
2582 | { | |
2583 | return SP_LIB_VERSION_CURRENT; | |
2584 | } | |
2585 | ||
2586 | SP_API int sp_get_revision_lib_version(void) | |
2587 | { | |
2588 | return SP_LIB_VERSION_REVISION; | |
2589 | } | |
2590 | ||
2591 | SP_API int sp_get_age_lib_version(void) | |
2592 | { | |
2593 | return SP_LIB_VERSION_AGE; | |
2594 | } | |
2595 | ||
2596 | SP_API const char *sp_get_lib_version_string(void) | |
2597 | { | |
2598 | return SP_LIB_VERSION_STRING; | |
2599 | } | |
2600 | ||
2601 | /** @} */ |