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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 | 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 | void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler; | |
48 | ||
49 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, | |
50 | struct sp_port_config *config); | |
51 | ||
52 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
53 | const struct sp_port_config *config); | |
54 | ||
55 | enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) | |
56 | { | |
57 | struct sp_port *port; | |
58 | enum sp_return ret; | |
59 | int len; | |
60 | ||
61 | TRACE("%s, %p", portname, port_ptr); | |
62 | ||
63 | if (!port_ptr) | |
64 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
65 | ||
66 | *port_ptr = NULL; | |
67 | ||
68 | if (!portname) | |
69 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); | |
70 | ||
71 | DEBUG("Building structure for port %s", portname); | |
72 | ||
73 | if (!(port = malloc(sizeof(struct sp_port)))) | |
74 | RETURN_ERROR(SP_ERR_MEM, "Port structure malloc failed"); | |
75 | ||
76 | len = strlen(portname) + 1; | |
77 | ||
78 | if (!(port->name = malloc(len))) { | |
79 | free(port); | |
80 | RETURN_ERROR(SP_ERR_MEM, "Port name malloc failed"); | |
81 | } | |
82 | ||
83 | memcpy(port->name, portname, len); | |
84 | ||
85 | #ifdef _WIN32 | |
86 | port->hdl = INVALID_HANDLE_VALUE; | |
87 | #else | |
88 | port->fd = -1; | |
89 | #endif | |
90 | ||
91 | port->description = NULL; | |
92 | port->transport = SP_TRANSPORT_NATIVE; | |
93 | port->usb_bus = -1; | |
94 | port->usb_address = -1; | |
95 | port->usb_vid = -1; | |
96 | port->usb_pid = -1; | |
97 | port->usb_manufacturer = NULL; | |
98 | port->usb_product = NULL; | |
99 | port->usb_serial = NULL; | |
100 | port->bluetooth_address = NULL; | |
101 | ||
102 | if ((ret = get_port_details(port)) != SP_OK) { | |
103 | sp_free_port(port); | |
104 | return ret; | |
105 | } | |
106 | ||
107 | *port_ptr = port; | |
108 | ||
109 | RETURN_OK(); | |
110 | } | |
111 | ||
112 | char *sp_get_port_name(const struct sp_port *port) | |
113 | { | |
114 | TRACE("%p", port); | |
115 | ||
116 | if (!port) | |
117 | return NULL; | |
118 | ||
119 | RETURN_VALUE("%s", port->name); | |
120 | } | |
121 | ||
122 | char *sp_get_port_description(struct sp_port *port) | |
123 | { | |
124 | TRACE("%p", port); | |
125 | ||
126 | if (!port || !port->description) | |
127 | return NULL; | |
128 | ||
129 | RETURN_VALUE("%s", port->description); | |
130 | } | |
131 | ||
132 | enum sp_transport sp_get_port_transport(struct sp_port *port) | |
133 | { | |
134 | TRACE("%p", port); | |
135 | ||
136 | if (!port) | |
137 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
138 | ||
139 | RETURN_VALUE("%d", port->transport); | |
140 | } | |
141 | ||
142 | enum sp_return sp_get_port_usb_bus_address(const struct sp_port *port, | |
143 | int *usb_bus, int *usb_address) | |
144 | { | |
145 | TRACE("%p", port); | |
146 | ||
147 | if (!port) | |
148 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
149 | if (port->transport != SP_TRANSPORT_USB) | |
150 | RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport"); | |
151 | if (port->usb_bus < 0 || port->usb_address < 0) | |
152 | RETURN_ERROR(SP_ERR_SUPP, "Bus and address values are not available"); | |
153 | ||
154 | if (usb_bus) *usb_bus = port->usb_bus; | |
155 | if (usb_address) *usb_address = port->usb_address; | |
156 | ||
157 | RETURN_OK(); | |
158 | } | |
159 | ||
160 | enum sp_return sp_get_port_usb_vid_pid(const struct sp_port *port, | |
161 | int *usb_vid, int *usb_pid) | |
162 | { | |
163 | TRACE("%p", port); | |
164 | ||
165 | if (!port) | |
166 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
167 | if (port->transport != SP_TRANSPORT_USB) | |
168 | RETURN_ERROR(SP_ERR_ARG, "Port does not use USB transport"); | |
169 | if (port->usb_vid < 0 || port->usb_pid < 0) | |
170 | RETURN_ERROR(SP_ERR_SUPP, "VID:PID values are not available"); | |
171 | ||
172 | if (usb_vid) *usb_vid = port->usb_vid; | |
173 | if (usb_pid) *usb_pid = port->usb_pid; | |
174 | ||
175 | RETURN_OK(); | |
176 | } | |
177 | ||
178 | char *sp_get_port_usb_manufacturer(const struct sp_port *port) | |
179 | { | |
180 | TRACE("%p", port); | |
181 | ||
182 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_manufacturer) | |
183 | return NULL; | |
184 | ||
185 | RETURN_VALUE("%s", port->usb_manufacturer); | |
186 | } | |
187 | ||
188 | char *sp_get_port_usb_product(const struct sp_port *port) | |
189 | { | |
190 | TRACE("%p", port); | |
191 | ||
192 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_product) | |
193 | return NULL; | |
194 | ||
195 | RETURN_VALUE("%s", port->usb_product); | |
196 | } | |
197 | ||
198 | char *sp_get_port_usb_serial(const struct sp_port *port) | |
199 | { | |
200 | TRACE("%p", port); | |
201 | ||
202 | if (!port || port->transport != SP_TRANSPORT_USB || !port->usb_serial) | |
203 | return NULL; | |
204 | ||
205 | RETURN_VALUE("%s", port->usb_serial); | |
206 | } | |
207 | ||
208 | char *sp_get_port_bluetooth_address(const struct sp_port *port) | |
209 | { | |
210 | TRACE("%p", port); | |
211 | ||
212 | if (!port || port->transport != SP_TRANSPORT_BLUETOOTH | |
213 | || !port->bluetooth_address) | |
214 | return NULL; | |
215 | ||
216 | RETURN_VALUE("%s", port->bluetooth_address); | |
217 | } | |
218 | ||
219 | enum sp_return sp_get_port_handle(const struct sp_port *port, void *result_ptr) | |
220 | { | |
221 | TRACE("%p, %p", port, result_ptr); | |
222 | ||
223 | if (!port) | |
224 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
225 | ||
226 | #ifdef _WIN32 | |
227 | HANDLE *handle_ptr = result_ptr; | |
228 | *handle_ptr = port->hdl; | |
229 | #else | |
230 | int *fd_ptr = result_ptr; | |
231 | *fd_ptr = port->fd; | |
232 | #endif | |
233 | ||
234 | RETURN_OK(); | |
235 | } | |
236 | ||
237 | enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr) | |
238 | { | |
239 | TRACE("%p, %p", port, copy_ptr); | |
240 | ||
241 | if (!copy_ptr) | |
242 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
243 | ||
244 | *copy_ptr = NULL; | |
245 | ||
246 | if (!port) | |
247 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
248 | ||
249 | if (!port->name) | |
250 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); | |
251 | ||
252 | DEBUG("Copying port structure"); | |
253 | ||
254 | RETURN_VALUE("%p", sp_get_port_by_name(port->name, copy_ptr)); | |
255 | } | |
256 | ||
257 | void sp_free_port(struct sp_port *port) | |
258 | { | |
259 | TRACE("%p", port); | |
260 | ||
261 | if (!port) { | |
262 | DEBUG("Null port"); | |
263 | RETURN(); | |
264 | } | |
265 | ||
266 | DEBUG("Freeing port structure"); | |
267 | ||
268 | if (port->name) | |
269 | free(port->name); | |
270 | if (port->description) | |
271 | free(port->description); | |
272 | if (port->usb_manufacturer) | |
273 | free(port->usb_manufacturer); | |
274 | if (port->usb_product) | |
275 | free(port->usb_product); | |
276 | if (port->usb_serial) | |
277 | free(port->usb_serial); | |
278 | if (port->bluetooth_address) | |
279 | free(port->bluetooth_address); | |
280 | #ifdef _WIN32 | |
281 | if (port->usb_path) | |
282 | free(port->usb_path); | |
283 | #endif | |
284 | ||
285 | free(port); | |
286 | ||
287 | RETURN(); | |
288 | } | |
289 | ||
290 | static struct sp_port **list_append(struct sp_port **list, const char *portname) | |
291 | { | |
292 | void *tmp; | |
293 | unsigned int count; | |
294 | ||
295 | for (count = 0; list[count]; count++); | |
296 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) | |
297 | goto fail; | |
298 | list = tmp; | |
299 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) | |
300 | goto fail; | |
301 | list[count + 1] = NULL; | |
302 | return list; | |
303 | ||
304 | fail: | |
305 | sp_free_port_list(list); | |
306 | return NULL; | |
307 | } | |
308 | ||
309 | enum sp_return sp_list_ports(struct sp_port ***list_ptr) | |
310 | { | |
311 | struct sp_port **list; | |
312 | int ret = SP_ERR_SUPP; | |
313 | ||
314 | TRACE("%p", list_ptr); | |
315 | ||
316 | if (!list_ptr) | |
317 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
318 | ||
319 | DEBUG("Enumerating ports"); | |
320 | ||
321 | if (!(list = malloc(sizeof(struct sp_port **)))) | |
322 | RETURN_ERROR(SP_ERR_MEM, "Port list malloc failed"); | |
323 | ||
324 | list[0] = NULL; | |
325 | ||
326 | #ifdef _WIN32 | |
327 | HKEY key; | |
328 | TCHAR *value, *data; | |
329 | DWORD max_value_len, max_data_size, max_data_len; | |
330 | DWORD value_len, data_size, data_len; | |
331 | DWORD type, index = 0; | |
332 | char *name; | |
333 | int name_len; | |
334 | ||
335 | ret = SP_OK; | |
336 | ||
337 | DEBUG("Opening registry key"); | |
338 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
339 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) { | |
340 | SET_FAIL(ret, "RegOpenKeyEx() failed"); | |
341 | goto out_done; | |
342 | } | |
343 | DEBUG("Querying registry key value and data sizes"); | |
344 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, | |
345 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) { | |
346 | SET_FAIL(ret, "RegQueryInfoKey() failed"); | |
347 | goto out_close; | |
348 | } | |
349 | max_data_len = max_data_size / sizeof(TCHAR); | |
350 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) { | |
351 | SET_ERROR(ret, SP_ERR_MEM, "registry value malloc failed"); | |
352 | goto out_close; | |
353 | } | |
354 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) { | |
355 | SET_ERROR(ret, SP_ERR_MEM, "registry data malloc failed"); | |
356 | goto out_free_value; | |
357 | } | |
358 | DEBUG("Iterating over values"); | |
359 | while ( | |
360 | value_len = max_value_len + 1, | |
361 | data_size = max_data_size, | |
362 | RegEnumValue(key, index, value, &value_len, | |
363 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) | |
364 | { | |
365 | data_len = data_size / sizeof(TCHAR); | |
366 | data[data_len] = '\0'; | |
367 | #ifdef UNICODE | |
368 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL); | |
369 | #else | |
370 | name_len = data_len + 1; | |
371 | #endif | |
372 | if (!(name = malloc(name_len))) { | |
373 | SET_ERROR(ret, SP_ERR_MEM, "registry port name malloc failed"); | |
374 | goto out; | |
375 | } | |
376 | #ifdef UNICODE | |
377 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); | |
378 | #else | |
379 | strcpy(name, data); | |
380 | #endif | |
381 | if (type == REG_SZ) { | |
382 | DEBUG("Found port %s", name); | |
383 | if (!(list = list_append(list, name))) { | |
384 | SET_ERROR(ret, SP_ERR_MEM, "list append failed"); | |
385 | goto out; | |
386 | } | |
387 | } | |
388 | index++; | |
389 | } | |
390 | out: | |
391 | free(data); | |
392 | out_free_value: | |
393 | free(value); | |
394 | out_close: | |
395 | RegCloseKey(key); | |
396 | out_done: | |
397 | #endif | |
398 | #ifdef __APPLE__ | |
399 | CFMutableDictionaryRef classes; | |
400 | io_iterator_t iter; | |
401 | char path[PATH_MAX]; | |
402 | io_object_t port; | |
403 | CFTypeRef cf_path; | |
404 | Boolean result; | |
405 | ||
406 | ret = SP_OK; | |
407 | ||
408 | DEBUG("Creating matching dictionary"); | |
409 | if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) { | |
410 | SET_FAIL(ret, "IOServiceMatching() failed"); | |
411 | goto out_done; | |
412 | } | |
413 | ||
414 | DEBUG("Getting matching services"); | |
415 | if (IOServiceGetMatchingServices(kIOMasterPortDefault, classes, | |
416 | &iter) != KERN_SUCCESS) { | |
417 | SET_FAIL(ret, "IOServiceGetMatchingServices() failed"); | |
418 | goto out_done; | |
419 | } | |
420 | ||
421 | DEBUG("Iterating over results"); | |
422 | while ((port = IOIteratorNext(iter))) { | |
423 | cf_path = IORegistryEntryCreateCFProperty(port, | |
424 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); | |
425 | if (cf_path) { | |
426 | result = CFStringGetCString(cf_path, path, sizeof(path), | |
427 | kCFStringEncodingASCII); | |
428 | CFRelease(cf_path); | |
429 | if (result) { | |
430 | DEBUG("Found port %s", path); | |
431 | if (!(list = list_append(list, path))) { | |
432 | SET_ERROR(ret, SP_ERR_MEM, "list append failed"); | |
433 | IOObjectRelease(port); | |
434 | goto out; | |
435 | } | |
436 | } | |
437 | } | |
438 | IOObjectRelease(port); | |
439 | } | |
440 | out: | |
441 | IOObjectRelease(iter); | |
442 | out_done: | |
443 | #endif | |
444 | #ifdef __linux__ | |
445 | char name[PATH_MAX], target[PATH_MAX]; | |
446 | struct dirent entry, *result; | |
447 | struct serial_struct serial_info; | |
448 | int len, fd, ioctl_result; | |
449 | DIR *dir; | |
450 | ||
451 | ret = SP_OK; | |
452 | ||
453 | DEBUG("Enumerating tty devices"); | |
454 | if (!(dir = opendir("/sys/class/tty"))) | |
455 | RETURN_FAIL("could not open /sys/class/tty"); | |
456 | ||
457 | DEBUG("Iterating over results"); | |
458 | while (!readdir_r(dir, &entry, &result) && result) { | |
459 | len = readlinkat(dirfd(dir), entry.d_name, target, sizeof(target)); | |
460 | if (len <= 0 || len >= (int) sizeof(target)-1) | |
461 | continue; | |
462 | target[len] = 0; | |
463 | if (strstr(target, "virtual")) | |
464 | continue; | |
465 | snprintf(name, sizeof(name), "/dev/%s", entry.d_name); | |
466 | DEBUG("Found device %s", name); | |
467 | if (strstr(target, "serial8250")) { | |
468 | /* The serial8250 driver has a hardcoded number of ports. | |
469 | * The only way to tell which actually exist on a given system | |
470 | * is to try to open them and make an ioctl call. */ | |
471 | DEBUG("serial8250 device, attempting to open"); | |
472 | if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) { | |
473 | DEBUG("open failed, skipping"); | |
474 | continue; | |
475 | } | |
476 | ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info); | |
477 | close(fd); | |
478 | if (ioctl_result != 0) { | |
479 | DEBUG("ioctl failed, skipping"); | |
480 | continue; | |
481 | } | |
482 | if (serial_info.type == PORT_UNKNOWN) { | |
483 | DEBUG("port type is unknown, skipping"); | |
484 | continue; | |
485 | } | |
486 | } | |
487 | DEBUG("Found port %s", name); | |
488 | list = list_append(list, name); | |
489 | if (!list) { | |
490 | SET_ERROR(ret, SP_ERR_MEM, "list append failed"); | |
491 | break; | |
492 | } | |
493 | } | |
494 | closedir(dir); | |
495 | #endif | |
496 | ||
497 | switch (ret) { | |
498 | case SP_OK: | |
499 | *list_ptr = list; | |
500 | RETURN_OK(); | |
501 | case SP_ERR_SUPP: | |
502 | DEBUG_ERROR(SP_ERR_SUPP, "Enumeration not supported on this platform"); | |
503 | default: | |
504 | if (list) | |
505 | sp_free_port_list(list); | |
506 | *list_ptr = NULL; | |
507 | return ret; | |
508 | } | |
509 | } | |
510 | ||
511 | void sp_free_port_list(struct sp_port **list) | |
512 | { | |
513 | unsigned int i; | |
514 | ||
515 | TRACE("%p", list); | |
516 | ||
517 | if (!list) { | |
518 | DEBUG("Null list"); | |
519 | RETURN(); | |
520 | } | |
521 | ||
522 | DEBUG("Freeing port list"); | |
523 | ||
524 | for (i = 0; list[i]; i++) | |
525 | sp_free_port(list[i]); | |
526 | free(list); | |
527 | ||
528 | RETURN(); | |
529 | } | |
530 | ||
531 | #define CHECK_PORT() do { \ | |
532 | if (port == NULL) \ | |
533 | RETURN_ERROR(SP_ERR_ARG, "Null port"); \ | |
534 | if (port->name == NULL) \ | |
535 | RETURN_ERROR(SP_ERR_ARG, "Null port name"); \ | |
536 | } while (0) | |
537 | #ifdef _WIN32 | |
538 | #define CHECK_PORT_HANDLE() do { \ | |
539 | if (port->hdl == INVALID_HANDLE_VALUE) \ | |
540 | RETURN_ERROR(SP_ERR_ARG, "Invalid port handle"); \ | |
541 | } while (0) | |
542 | #else | |
543 | #define CHECK_PORT_HANDLE() do { \ | |
544 | if (port->fd < 0) \ | |
545 | RETURN_ERROR(SP_ERR_ARG, "Invalid port fd"); \ | |
546 | } while (0) | |
547 | #endif | |
548 | #define CHECK_OPEN_PORT() do { \ | |
549 | CHECK_PORT(); \ | |
550 | CHECK_PORT_HANDLE(); \ | |
551 | } while (0) | |
552 | ||
553 | enum sp_return sp_open(struct sp_port *port, enum sp_mode flags) | |
554 | { | |
555 | struct port_data data; | |
556 | struct sp_port_config config; | |
557 | enum sp_return ret; | |
558 | ||
559 | TRACE("%p, 0x%x", port, flags); | |
560 | ||
561 | CHECK_PORT(); | |
562 | ||
563 | if (flags > (SP_MODE_READ | SP_MODE_WRITE)) | |
564 | RETURN_ERROR(SP_ERR_ARG, "Invalid flags"); | |
565 | ||
566 | DEBUG("Opening port %s", port->name); | |
567 | ||
568 | #ifdef _WIN32 | |
569 | DWORD desired_access = 0, flags_and_attributes = 0, errors; | |
570 | char *escaped_port_name; | |
571 | COMSTAT status; | |
572 | ||
573 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
574 | if (!(escaped_port_name = malloc(strlen(port->name) + 5))) | |
575 | RETURN_ERROR(SP_ERR_MEM, "Escaped port name malloc failed"); | |
576 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
577 | ||
578 | /* Map 'flags' to the OS-specific settings. */ | |
579 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL | FILE_FLAG_OVERLAPPED; | |
580 | if (flags & SP_MODE_READ) | |
581 | desired_access |= GENERIC_READ; | |
582 | if (flags & SP_MODE_WRITE) | |
583 | desired_access |= GENERIC_WRITE; | |
584 | ||
585 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, | |
586 | OPEN_EXISTING, flags_and_attributes, 0); | |
587 | ||
588 | free(escaped_port_name); | |
589 | ||
590 | if (port->hdl == INVALID_HANDLE_VALUE) | |
591 | RETURN_FAIL("port CreateFile() failed"); | |
592 | ||
593 | /* All timeouts initially disabled. */ | |
594 | port->timeouts.ReadIntervalTimeout = 0; | |
595 | port->timeouts.ReadTotalTimeoutMultiplier = 0; | |
596 | port->timeouts.ReadTotalTimeoutConstant = 0; | |
597 | port->timeouts.WriteTotalTimeoutMultiplier = 0; | |
598 | port->timeouts.WriteTotalTimeoutConstant = 0; | |
599 | ||
600 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) { | |
601 | sp_close(port); | |
602 | RETURN_FAIL("SetCommTimeouts() failed"); | |
603 | } | |
604 | ||
605 | /* Prepare OVERLAPPED structures. */ | |
606 | #define INIT_OVERLAPPED(ovl) do { \ | |
607 | memset(&port->ovl, 0, sizeof(port->ovl)); \ | |
608 | port->ovl.hEvent = INVALID_HANDLE_VALUE; \ | |
609 | if ((port->ovl.hEvent = CreateEvent(NULL, TRUE, TRUE, NULL)) \ | |
610 | == INVALID_HANDLE_VALUE) { \ | |
611 | sp_close(port); \ | |
612 | RETURN_FAIL(#ovl "CreateEvent() failed"); \ | |
613 | } \ | |
614 | } while (0) | |
615 | ||
616 | INIT_OVERLAPPED(read_ovl); | |
617 | INIT_OVERLAPPED(write_ovl); | |
618 | INIT_OVERLAPPED(wait_ovl); | |
619 | ||
620 | /* Set event mask for RX and error events. */ | |
621 | if (SetCommMask(port->hdl, EV_RXCHAR | EV_ERR) == 0) { | |
622 | sp_close(port); | |
623 | RETURN_FAIL("SetCommMask() failed"); | |
624 | } | |
625 | ||
626 | /* Start background operation for RX and error events. */ | |
627 | if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) { | |
628 | if (GetLastError() != ERROR_IO_PENDING) { | |
629 | sp_close(port); | |
630 | RETURN_FAIL("WaitCommEvent() failed"); | |
631 | } | |
632 | } | |
633 | ||
634 | port->writing = FALSE; | |
635 | ||
636 | #else | |
637 | int flags_local = O_NONBLOCK | O_NOCTTY; | |
638 | ||
639 | /* Map 'flags' to the OS-specific settings. */ | |
640 | if (flags & (SP_MODE_READ | SP_MODE_WRITE)) | |
641 | flags_local |= O_RDWR; | |
642 | else if (flags & SP_MODE_READ) | |
643 | flags_local |= O_RDONLY; | |
644 | else if (flags & SP_MODE_WRITE) | |
645 | flags_local |= O_WRONLY; | |
646 | ||
647 | if ((port->fd = open(port->name, flags_local)) < 0) | |
648 | RETURN_FAIL("open() failed"); | |
649 | #endif | |
650 | ||
651 | ret = get_config(port, &data, &config); | |
652 | ||
653 | if (ret < 0) { | |
654 | sp_close(port); | |
655 | RETURN_CODEVAL(ret); | |
656 | } | |
657 | ||
658 | /* Set sane port settings. */ | |
659 | #ifdef _WIN32 | |
660 | data.dcb.fBinary = TRUE; | |
661 | data.dcb.fDsrSensitivity = FALSE; | |
662 | data.dcb.fErrorChar = FALSE; | |
663 | data.dcb.fNull = FALSE; | |
664 | data.dcb.fAbortOnError = TRUE; | |
665 | #else | |
666 | /* Turn off all fancy termios tricks, give us a raw channel. */ | |
667 | data.term.c_iflag &= ~(IGNBRK | BRKINT | PARMRK | ISTRIP | INLCR | IGNCR | ICRNL | IMAXBEL); | |
668 | #ifdef IUCLC | |
669 | data.term.c_iflag &= ~IUCLC; | |
670 | #endif | |
671 | data.term.c_oflag &= ~(OPOST | ONLCR | OCRNL | ONOCR | ONLRET); | |
672 | #ifdef OLCUC | |
673 | data.term.c_oflag &= ~OLCUC; | |
674 | #endif | |
675 | #ifdef NLDLY | |
676 | data.term.c_oflag &= ~NLDLY; | |
677 | #endif | |
678 | #ifdef CRDLY | |
679 | data.term.c_oflag &= ~CRDLY; | |
680 | #endif | |
681 | #ifdef TABDLY | |
682 | data.term.c_oflag &= ~TABDLY; | |
683 | #endif | |
684 | #ifdef BSDLY | |
685 | data.term.c_oflag &= ~BSDLY; | |
686 | #endif | |
687 | #ifdef VTDLY | |
688 | data.term.c_oflag &= ~VTDLY; | |
689 | #endif | |
690 | #ifdef FFDLY | |
691 | data.term.c_oflag &= ~FFDLY; | |
692 | #endif | |
693 | #ifdef OFILL | |
694 | data.term.c_oflag &= ~OFILL; | |
695 | #endif | |
696 | data.term.c_lflag &= ~(ISIG | ICANON | ECHO | IEXTEN); | |
697 | data.term.c_cc[VMIN] = 0; | |
698 | data.term.c_cc[VTIME] = 0; | |
699 | ||
700 | /* Ignore modem status lines; enable receiver; leave control lines alone on close. */ | |
701 | data.term.c_cflag |= (CLOCAL | CREAD | HUPCL); | |
702 | #endif | |
703 | ||
704 | #ifdef _WIN32 | |
705 | if (ClearCommError(port->hdl, &errors, &status) == 0) | |
706 | RETURN_FAIL("ClearCommError() failed"); | |
707 | #endif | |
708 | ||
709 | ret = set_config(port, &data, &config); | |
710 | ||
711 | if (ret < 0) { | |
712 | sp_close(port); | |
713 | RETURN_CODEVAL(ret); | |
714 | } | |
715 | ||
716 | RETURN_OK(); | |
717 | } | |
718 | ||
719 | enum sp_return sp_close(struct sp_port *port) | |
720 | { | |
721 | TRACE("%p", port); | |
722 | ||
723 | CHECK_OPEN_PORT(); | |
724 | ||
725 | DEBUG("Closing port %s", port->name); | |
726 | ||
727 | #ifdef _WIN32 | |
728 | /* Returns non-zero upon success, 0 upon failure. */ | |
729 | if (CloseHandle(port->hdl) == 0) | |
730 | RETURN_FAIL("port CloseHandle() failed"); | |
731 | port->hdl = INVALID_HANDLE_VALUE; | |
732 | ||
733 | /* Close event handles for overlapped structures. */ | |
734 | #define CLOSE_OVERLAPPED(ovl) do { \ | |
735 | if (port->ovl.hEvent != INVALID_HANDLE_VALUE && \ | |
736 | CloseHandle(port->ovl.hEvent) == 0) \ | |
737 | RETURN_FAIL(# ovl "event CloseHandle() failed"); \ | |
738 | } while (0) | |
739 | CLOSE_OVERLAPPED(read_ovl); | |
740 | CLOSE_OVERLAPPED(write_ovl); | |
741 | CLOSE_OVERLAPPED(wait_ovl); | |
742 | ||
743 | #else | |
744 | /* Returns 0 upon success, -1 upon failure. */ | |
745 | if (close(port->fd) == -1) | |
746 | RETURN_FAIL("close() failed"); | |
747 | port->fd = -1; | |
748 | #endif | |
749 | ||
750 | RETURN_OK(); | |
751 | } | |
752 | ||
753 | enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers) | |
754 | { | |
755 | TRACE("%p, 0x%x", port, buffers); | |
756 | ||
757 | CHECK_OPEN_PORT(); | |
758 | ||
759 | if (buffers > SP_BUF_BOTH) | |
760 | RETURN_ERROR(SP_ERR_ARG, "Invalid buffer selection"); | |
761 | ||
762 | const char *buffer_names[] = {"no", "input", "output", "both"}; | |
763 | ||
764 | DEBUG("Flushing %s buffers on port %s", buffer_names[buffers], port->name); | |
765 | ||
766 | #ifdef _WIN32 | |
767 | DWORD flags = 0; | |
768 | if (buffers & SP_BUF_INPUT) | |
769 | flags |= PURGE_RXCLEAR; | |
770 | if (buffers & SP_BUF_OUTPUT) | |
771 | flags |= PURGE_TXCLEAR; | |
772 | ||
773 | /* Returns non-zero upon success, 0 upon failure. */ | |
774 | if (PurgeComm(port->hdl, flags) == 0) | |
775 | RETURN_FAIL("PurgeComm() failed"); | |
776 | #else | |
777 | int flags = 0; | |
778 | if (buffers & SP_BUF_BOTH) | |
779 | flags = TCIOFLUSH; | |
780 | else if (buffers & SP_BUF_INPUT) | |
781 | flags = TCIFLUSH; | |
782 | else if (buffers & SP_BUF_OUTPUT) | |
783 | flags = TCOFLUSH; | |
784 | ||
785 | /* Returns 0 upon success, -1 upon failure. */ | |
786 | if (tcflush(port->fd, flags) < 0) | |
787 | RETURN_FAIL("tcflush() failed"); | |
788 | #endif | |
789 | RETURN_OK(); | |
790 | } | |
791 | ||
792 | enum sp_return sp_drain(struct sp_port *port) | |
793 | { | |
794 | TRACE("%p", port); | |
795 | ||
796 | CHECK_OPEN_PORT(); | |
797 | ||
798 | DEBUG("Draining port %s", port->name); | |
799 | ||
800 | #ifdef _WIN32 | |
801 | /* Returns non-zero upon success, 0 upon failure. */ | |
802 | if (FlushFileBuffers(port->hdl) == 0) | |
803 | RETURN_FAIL("FlushFileBuffers() failed"); | |
804 | RETURN_OK(); | |
805 | #else | |
806 | int result; | |
807 | while (1) { | |
808 | #ifdef __ANDROID__ | |
809 | int arg = 1; | |
810 | result = ioctl(port->fd, TCSBRK, &arg); | |
811 | #else | |
812 | result = tcdrain(port->fd); | |
813 | #endif | |
814 | if (result < 0) { | |
815 | if (errno == EINTR) { | |
816 | DEBUG("tcdrain() was interrupted"); | |
817 | continue; | |
818 | } else { | |
819 | RETURN_FAIL("tcdrain() failed"); | |
820 | } | |
821 | } else { | |
822 | RETURN_OK(); | |
823 | } | |
824 | } | |
825 | #endif | |
826 | } | |
827 | ||
828 | enum sp_return sp_blocking_write(struct sp_port *port, const void *buf, size_t count, unsigned int timeout) | |
829 | { | |
830 | TRACE("%p, %p, %d, %d", port, buf, count, timeout); | |
831 | ||
832 | CHECK_OPEN_PORT(); | |
833 | ||
834 | if (!buf) | |
835 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
836 | ||
837 | if (timeout) | |
838 | DEBUG("Writing %d bytes to port %s, timeout %d ms", count, port->name, timeout); | |
839 | else | |
840 | DEBUG("Writing %d bytes to port %s, no timeout", count, port->name); | |
841 | ||
842 | if (count == 0) | |
843 | RETURN_VALUE("0", 0); | |
844 | ||
845 | #ifdef _WIN32 | |
846 | DWORD bytes_written = 0; | |
847 | BOOL result; | |
848 | ||
849 | /* Wait for previous non-blocking write to complete, if any. */ | |
850 | if (port->writing) { | |
851 | DEBUG("Waiting for previous write to complete"); | |
852 | result = GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE); | |
853 | port->writing = 0; | |
854 | if (!result) | |
855 | RETURN_FAIL("Previous write failed to complete"); | |
856 | DEBUG("Previous write completed"); | |
857 | } | |
858 | ||
859 | /* Set timeout. */ | |
860 | port->timeouts.WriteTotalTimeoutConstant = timeout; | |
861 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
862 | RETURN_FAIL("SetCommTimeouts() failed"); | |
863 | ||
864 | /* Start write. */ | |
865 | if (WriteFile(port->hdl, buf, count, NULL, &port->write_ovl) == 0) { | |
866 | if (GetLastError() == ERROR_IO_PENDING) { | |
867 | DEBUG("Waiting for write to complete"); | |
868 | GetOverlappedResult(port->hdl, &port->write_ovl, &bytes_written, TRUE); | |
869 | DEBUG("Write completed, %d/%d bytes written", bytes_written, count); | |
870 | RETURN_VALUE("%d", bytes_written); | |
871 | } else { | |
872 | RETURN_FAIL("WriteFile() failed"); | |
873 | } | |
874 | } else { | |
875 | DEBUG("Write completed immediately"); | |
876 | RETURN_VALUE("%d", count); | |
877 | } | |
878 | #else | |
879 | size_t bytes_written = 0; | |
880 | unsigned char *ptr = (unsigned char *) buf; | |
881 | struct timeval start, delta, now, end = {0, 0}; | |
882 | fd_set fds; | |
883 | int result; | |
884 | ||
885 | if (timeout) { | |
886 | /* Get time at start of operation. */ | |
887 | gettimeofday(&start, NULL); | |
888 | /* Define duration of timeout. */ | |
889 | delta.tv_sec = timeout / 1000; | |
890 | delta.tv_usec = (timeout % 1000) * 1000; | |
891 | /* Calculate time at which we should give up. */ | |
892 | timeradd(&start, &delta, &end); | |
893 | } | |
894 | ||
895 | /* Loop until we have written the requested number of bytes. */ | |
896 | while (bytes_written < count) | |
897 | { | |
898 | /* Wait until space is available. */ | |
899 | FD_ZERO(&fds); | |
900 | FD_SET(port->fd, &fds); | |
901 | if (timeout) { | |
902 | gettimeofday(&now, NULL); | |
903 | if (timercmp(&now, &end, >)) { | |
904 | DEBUG("write timed out"); | |
905 | RETURN_VALUE("%d", bytes_written); | |
906 | } | |
907 | timersub(&end, &now, &delta); | |
908 | } | |
909 | result = select(port->fd + 1, NULL, &fds, NULL, timeout ? &delta : NULL); | |
910 | if (result < 0) { | |
911 | if (errno == EINTR) { | |
912 | DEBUG("select() call was interrupted, repeating"); | |
913 | continue; | |
914 | } else { | |
915 | RETURN_FAIL("select() failed"); | |
916 | } | |
917 | } else if (result == 0) { | |
918 | DEBUG("write timed out"); | |
919 | RETURN_VALUE("%d", bytes_written); | |
920 | } | |
921 | ||
922 | /* Do write. */ | |
923 | result = write(port->fd, ptr, count - bytes_written); | |
924 | ||
925 | if (result < 0) { | |
926 | if (errno == EAGAIN) | |
927 | /* This shouldn't happen because we did a select() first, but handle anyway. */ | |
928 | continue; | |
929 | else | |
930 | /* This is an actual failure. */ | |
931 | RETURN_FAIL("write() failed"); | |
932 | } | |
933 | ||
934 | bytes_written += result; | |
935 | ptr += result; | |
936 | } | |
937 | ||
938 | RETURN_VALUE("%d", bytes_written); | |
939 | #endif | |
940 | } | |
941 | ||
942 | enum sp_return sp_nonblocking_write(struct sp_port *port, const void *buf, size_t count) | |
943 | { | |
944 | TRACE("%p, %p, %d", port, buf, count); | |
945 | ||
946 | CHECK_OPEN_PORT(); | |
947 | ||
948 | if (!buf) | |
949 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
950 | ||
951 | DEBUG("Writing up to %d bytes to port %s", count, port->name); | |
952 | ||
953 | if (count == 0) | |
954 | RETURN_VALUE("0", 0); | |
955 | ||
956 | #ifdef _WIN32 | |
957 | DWORD written = 0; | |
958 | BYTE *ptr = (BYTE *) buf; | |
959 | ||
960 | /* Check whether previous write is complete. */ | |
961 | if (port->writing) { | |
962 | if (HasOverlappedIoCompleted(&port->write_ovl)) { | |
963 | DEBUG("Previous write completed"); | |
964 | port->writing = 0; | |
965 | } else { | |
966 | DEBUG("Previous write not complete"); | |
967 | /* Can't take a new write until the previous one finishes. */ | |
968 | RETURN_VALUE("0", 0); | |
969 | } | |
970 | } | |
971 | ||
972 | /* Set timeout. */ | |
973 | port->timeouts.WriteTotalTimeoutConstant = 0; | |
974 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
975 | RETURN_FAIL("SetCommTimeouts() failed"); | |
976 | ||
977 | /* Keep writing data until the OS has to actually start an async IO for it. | |
978 | * At that point we know the buffer is full. */ | |
979 | while (written < count) | |
980 | { | |
981 | /* Copy first byte of user buffer. */ | |
982 | port->pending_byte = *ptr++; | |
983 | ||
984 | /* Start asynchronous write. */ | |
985 | if (WriteFile(port->hdl, &port->pending_byte, 1, NULL, &port->write_ovl) == 0) { | |
986 | if (GetLastError() == ERROR_IO_PENDING) { | |
987 | if (HasOverlappedIoCompleted(&port->write_ovl)) { | |
988 | DEBUG("Asynchronous write completed immediately"); | |
989 | port->writing = 0; | |
990 | written++; | |
991 | continue; | |
992 | } else { | |
993 | DEBUG("Asynchronous write running"); | |
994 | port->writing = 1; | |
995 | RETURN_VALUE("%d", ++written); | |
996 | } | |
997 | } else { | |
998 | /* Actual failure of some kind. */ | |
999 | RETURN_FAIL("WriteFile() failed"); | |
1000 | } | |
1001 | } else { | |
1002 | DEBUG("Single byte written immediately"); | |
1003 | written++; | |
1004 | } | |
1005 | } | |
1006 | ||
1007 | DEBUG("All bytes written immediately"); | |
1008 | ||
1009 | RETURN_VALUE("%d", written); | |
1010 | #else | |
1011 | /* Returns the number of bytes written, or -1 upon failure. */ | |
1012 | ssize_t written = write(port->fd, buf, count); | |
1013 | ||
1014 | if (written < 0) | |
1015 | RETURN_FAIL("write() failed"); | |
1016 | else | |
1017 | RETURN_VALUE("%d", written); | |
1018 | #endif | |
1019 | } | |
1020 | ||
1021 | enum sp_return sp_blocking_read(struct sp_port *port, void *buf, size_t count, unsigned int timeout) | |
1022 | { | |
1023 | TRACE("%p, %p, %d, %d", port, buf, count, timeout); | |
1024 | ||
1025 | CHECK_OPEN_PORT(); | |
1026 | ||
1027 | if (!buf) | |
1028 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
1029 | ||
1030 | if (timeout) | |
1031 | DEBUG("Reading %d bytes from port %s, timeout %d ms", count, port->name, timeout); | |
1032 | else | |
1033 | DEBUG("Reading %d bytes from port %s, no timeout", count, port->name); | |
1034 | ||
1035 | if (count == 0) | |
1036 | RETURN_VALUE("0", 0); | |
1037 | ||
1038 | #ifdef _WIN32 | |
1039 | DWORD bytes_read = 0; | |
1040 | ||
1041 | /* Set timeout. */ | |
1042 | port->timeouts.ReadIntervalTimeout = 0; | |
1043 | port->timeouts.ReadTotalTimeoutConstant = timeout; | |
1044 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
1045 | RETURN_FAIL("SetCommTimeouts() failed"); | |
1046 | ||
1047 | /* Start read. */ | |
1048 | if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) { | |
1049 | if (GetLastError() == ERROR_IO_PENDING) { | |
1050 | DEBUG("Waiting for read to complete"); | |
1051 | GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE); | |
1052 | DEBUG("Read completed, %d/%d bytes read", bytes_read, count); | |
1053 | } else { | |
1054 | RETURN_FAIL("ReadFile() failed"); | |
1055 | } | |
1056 | } else { | |
1057 | DEBUG("Read completed immediately"); | |
1058 | bytes_read = count; | |
1059 | } | |
1060 | ||
1061 | /* Start background operation for subsequent events. */ | |
1062 | if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) { | |
1063 | if (GetLastError() != ERROR_IO_PENDING) | |
1064 | RETURN_FAIL("WaitCommEvent() failed"); | |
1065 | } | |
1066 | ||
1067 | RETURN_VALUE("%d", bytes_read); | |
1068 | ||
1069 | #else | |
1070 | size_t bytes_read = 0; | |
1071 | unsigned char *ptr = (unsigned char *) buf; | |
1072 | struct timeval start, delta, now, end = {0, 0}; | |
1073 | fd_set fds; | |
1074 | int result; | |
1075 | ||
1076 | if (timeout) { | |
1077 | /* Get time at start of operation. */ | |
1078 | gettimeofday(&start, NULL); | |
1079 | /* Define duration of timeout. */ | |
1080 | delta.tv_sec = timeout / 1000; | |
1081 | delta.tv_usec = (timeout % 1000) * 1000; | |
1082 | /* Calculate time at which we should give up. */ | |
1083 | timeradd(&start, &delta, &end); | |
1084 | } | |
1085 | ||
1086 | /* Loop until we have the requested number of bytes. */ | |
1087 | while (bytes_read < count) | |
1088 | { | |
1089 | /* Wait until data is available. */ | |
1090 | FD_ZERO(&fds); | |
1091 | FD_SET(port->fd, &fds); | |
1092 | if (timeout) { | |
1093 | gettimeofday(&now, NULL); | |
1094 | if (timercmp(&now, &end, >)) | |
1095 | /* Timeout has expired. */ | |
1096 | RETURN_VALUE("%d", bytes_read); | |
1097 | timersub(&end, &now, &delta); | |
1098 | } | |
1099 | result = select(port->fd + 1, &fds, NULL, NULL, timeout ? &delta : NULL); | |
1100 | if (result < 0) { | |
1101 | if (errno == EINTR) { | |
1102 | DEBUG("select() call was interrupted, repeating"); | |
1103 | continue; | |
1104 | } else { | |
1105 | RETURN_FAIL("select() failed"); | |
1106 | } | |
1107 | } else if (result == 0) { | |
1108 | DEBUG("read timed out"); | |
1109 | RETURN_VALUE("%d", bytes_read); | |
1110 | } | |
1111 | ||
1112 | /* Do read. */ | |
1113 | result = read(port->fd, ptr, count - bytes_read); | |
1114 | ||
1115 | if (result < 0) { | |
1116 | if (errno == EAGAIN) | |
1117 | /* This shouldn't happen because we did a select() first, but handle anyway. */ | |
1118 | continue; | |
1119 | else | |
1120 | /* This is an actual failure. */ | |
1121 | RETURN_FAIL("read() failed"); | |
1122 | } | |
1123 | ||
1124 | bytes_read += result; | |
1125 | ptr += result; | |
1126 | } | |
1127 | ||
1128 | RETURN_VALUE("%d", bytes_read); | |
1129 | #endif | |
1130 | } | |
1131 | ||
1132 | enum sp_return sp_nonblocking_read(struct sp_port *port, void *buf, size_t count) | |
1133 | { | |
1134 | TRACE("%p, %p, %d", port, buf, count); | |
1135 | ||
1136 | CHECK_OPEN_PORT(); | |
1137 | ||
1138 | if (!buf) | |
1139 | RETURN_ERROR(SP_ERR_ARG, "Null buffer"); | |
1140 | ||
1141 | DEBUG("Reading up to %d bytes from port %s", count, port->name); | |
1142 | ||
1143 | #ifdef _WIN32 | |
1144 | DWORD bytes_read; | |
1145 | ||
1146 | /* Set timeout. */ | |
1147 | port->timeouts.ReadIntervalTimeout = MAXDWORD; | |
1148 | port->timeouts.ReadTotalTimeoutConstant = 0; | |
1149 | if (SetCommTimeouts(port->hdl, &port->timeouts) == 0) | |
1150 | RETURN_FAIL("SetCommTimeouts() failed"); | |
1151 | ||
1152 | /* Do read. */ | |
1153 | if (ReadFile(port->hdl, buf, count, NULL, &port->read_ovl) == 0) | |
1154 | RETURN_FAIL("ReadFile() failed"); | |
1155 | ||
1156 | /* Get number of bytes read. */ | |
1157 | if (GetOverlappedResult(port->hdl, &port->read_ovl, &bytes_read, TRUE) == 0) | |
1158 | RETURN_FAIL("GetOverlappedResult() failed"); | |
1159 | ||
1160 | if (bytes_read > 0) { | |
1161 | /* Start background operation for subsequent events. */ | |
1162 | if (WaitCommEvent(port->hdl, &port->events, &port->wait_ovl) == 0) { | |
1163 | if (GetLastError() != ERROR_IO_PENDING) | |
1164 | RETURN_FAIL("WaitCommEvent() failed"); | |
1165 | } | |
1166 | } | |
1167 | ||
1168 | RETURN_VALUE("%d", bytes_read); | |
1169 | #else | |
1170 | ssize_t bytes_read; | |
1171 | ||
1172 | /* Returns the number of bytes read, or -1 upon failure. */ | |
1173 | if ((bytes_read = read(port->fd, buf, count)) < 0) { | |
1174 | if (errno == EAGAIN) | |
1175 | /* No bytes available. */ | |
1176 | bytes_read = 0; | |
1177 | else | |
1178 | /* This is an actual failure. */ | |
1179 | RETURN_FAIL("read() failed"); | |
1180 | } | |
1181 | RETURN_VALUE("%d", bytes_read); | |
1182 | #endif | |
1183 | } | |
1184 | ||
1185 | enum sp_return sp_input_waiting(struct sp_port *port) | |
1186 | { | |
1187 | TRACE("%p", port); | |
1188 | ||
1189 | CHECK_OPEN_PORT(); | |
1190 | ||
1191 | DEBUG("Checking input bytes waiting on port %s", port->name); | |
1192 | ||
1193 | #ifdef _WIN32 | |
1194 | DWORD errors; | |
1195 | COMSTAT comstat; | |
1196 | ||
1197 | if (ClearCommError(port->hdl, &errors, &comstat) == 0) | |
1198 | RETURN_FAIL("ClearCommError() failed"); | |
1199 | RETURN_VALUE("%d", comstat.cbInQue); | |
1200 | #else | |
1201 | int bytes_waiting; | |
1202 | if (ioctl(port->fd, TIOCINQ, &bytes_waiting) < 0) | |
1203 | RETURN_FAIL("TIOCINQ ioctl failed"); | |
1204 | RETURN_VALUE("%d", bytes_waiting); | |
1205 | #endif | |
1206 | } | |
1207 | ||
1208 | enum sp_return sp_output_waiting(struct sp_port *port) | |
1209 | { | |
1210 | TRACE("%p", port); | |
1211 | ||
1212 | CHECK_OPEN_PORT(); | |
1213 | ||
1214 | DEBUG("Checking output bytes waiting on port %s", port->name); | |
1215 | ||
1216 | #ifdef _WIN32 | |
1217 | DWORD errors; | |
1218 | COMSTAT comstat; | |
1219 | ||
1220 | if (ClearCommError(port->hdl, &errors, &comstat) == 0) | |
1221 | RETURN_FAIL("ClearCommError() failed"); | |
1222 | RETURN_VALUE("%d", comstat.cbOutQue); | |
1223 | #else | |
1224 | int bytes_waiting; | |
1225 | if (ioctl(port->fd, TIOCOUTQ, &bytes_waiting) < 0) | |
1226 | RETURN_FAIL("TIOCOUTQ ioctl failed"); | |
1227 | RETURN_VALUE("%d", bytes_waiting); | |
1228 | #endif | |
1229 | } | |
1230 | ||
1231 | enum sp_return sp_new_event_set(struct sp_event_set **result_ptr) | |
1232 | { | |
1233 | struct sp_event_set *result; | |
1234 | ||
1235 | TRACE("%p", result_ptr); | |
1236 | ||
1237 | if (!result_ptr) | |
1238 | RETURN_ERROR(SP_ERR_ARG, "Null result"); | |
1239 | ||
1240 | *result_ptr = NULL; | |
1241 | ||
1242 | if (!(result = malloc(sizeof(struct sp_event_set)))) | |
1243 | RETURN_ERROR(SP_ERR_MEM, "sp_event_set malloc() failed"); | |
1244 | ||
1245 | memset(result, 0, sizeof(struct sp_event_set)); | |
1246 | ||
1247 | *result_ptr = result; | |
1248 | ||
1249 | RETURN_OK(); | |
1250 | } | |
1251 | ||
1252 | static enum sp_return add_handle(struct sp_event_set *event_set, | |
1253 | event_handle handle, enum sp_event mask) | |
1254 | { | |
1255 | void *new_handles; | |
1256 | enum sp_event *new_masks; | |
1257 | ||
1258 | TRACE("%p, %d, %d", event_set, handle, mask); | |
1259 | ||
1260 | if (!(new_handles = realloc(event_set->handles, | |
1261 | sizeof(event_handle) * (event_set->count + 1)))) | |
1262 | RETURN_ERROR(SP_ERR_MEM, "handle array realloc() failed"); | |
1263 | ||
1264 | if (!(new_masks = realloc(event_set->masks, | |
1265 | sizeof(enum sp_event) * (event_set->count + 1)))) | |
1266 | RETURN_ERROR(SP_ERR_MEM, "mask array realloc() failed"); | |
1267 | ||
1268 | event_set->handles = new_handles; | |
1269 | event_set->masks = new_masks; | |
1270 | ||
1271 | ((event_handle *) event_set->handles)[event_set->count] = handle; | |
1272 | event_set->masks[event_set->count] = mask; | |
1273 | ||
1274 | event_set->count++; | |
1275 | ||
1276 | RETURN_OK(); | |
1277 | } | |
1278 | ||
1279 | enum sp_return sp_add_port_events(struct sp_event_set *event_set, | |
1280 | const struct sp_port *port, enum sp_event mask) | |
1281 | { | |
1282 | TRACE("%p, %p, %d", event_set, port, mask); | |
1283 | ||
1284 | if (!event_set) | |
1285 | RETURN_ERROR(SP_ERR_ARG, "Null event set"); | |
1286 | ||
1287 | if (!port) | |
1288 | RETURN_ERROR(SP_ERR_ARG, "Null port"); | |
1289 | ||
1290 | if (mask > (SP_EVENT_RX_READY | SP_EVENT_TX_READY | SP_EVENT_ERROR)) | |
1291 | RETURN_ERROR(SP_ERR_ARG, "Invalid event mask"); | |
1292 | ||
1293 | if (!mask) | |
1294 | RETURN_OK(); | |
1295 | ||
1296 | #ifdef _WIN32 | |
1297 | enum sp_event handle_mask; | |
1298 | if ((handle_mask = mask & SP_EVENT_TX_READY)) | |
1299 | TRY(add_handle(event_set, port->write_ovl.hEvent, handle_mask)); | |
1300 | if ((handle_mask = mask & (SP_EVENT_RX_READY | SP_EVENT_ERROR))) | |
1301 | TRY(add_handle(event_set, port->wait_ovl.hEvent, handle_mask)); | |
1302 | #else | |
1303 | TRY(add_handle(event_set, port->fd, mask)); | |
1304 | #endif | |
1305 | ||
1306 | RETURN_OK(); | |
1307 | } | |
1308 | ||
1309 | void sp_free_event_set(struct sp_event_set *event_set) | |
1310 | { | |
1311 | TRACE("%p", event_set); | |
1312 | ||
1313 | if (!event_set) { | |
1314 | DEBUG("Null event set"); | |
1315 | RETURN(); | |
1316 | } | |
1317 | ||
1318 | DEBUG("Freeing event set"); | |
1319 | ||
1320 | if (event_set->handles) | |
1321 | free(event_set->handles); | |
1322 | if (event_set->masks) | |
1323 | free(event_set->masks); | |
1324 | ||
1325 | free(event_set); | |
1326 | ||
1327 | RETURN(); | |
1328 | } | |
1329 | ||
1330 | enum sp_return sp_wait(struct sp_event_set *event_set, unsigned int timeout) | |
1331 | { | |
1332 | TRACE("%p, %d", event_set, timeout); | |
1333 | ||
1334 | if (!event_set) | |
1335 | RETURN_ERROR(SP_ERR_ARG, "Null event set"); | |
1336 | ||
1337 | #ifdef _WIN32 | |
1338 | if (WaitForMultipleObjects(event_set->count, event_set->handles, FALSE, | |
1339 | timeout ? timeout : INFINITE) == WAIT_FAILED) | |
1340 | RETURN_FAIL("WaitForMultipleObjects() failed"); | |
1341 | ||
1342 | RETURN_OK(); | |
1343 | #else | |
1344 | struct timeval start, delta, now, end = {0, 0}; | |
1345 | int result, timeout_remaining; | |
1346 | struct pollfd *pollfds; | |
1347 | unsigned int i; | |
1348 | ||
1349 | if (!(pollfds = malloc(sizeof(struct pollfd) * event_set->count))) | |
1350 | RETURN_ERROR(SP_ERR_MEM, "pollfds malloc() failed"); | |
1351 | ||
1352 | for (i = 0; i < event_set->count; i++) { | |
1353 | pollfds[i].fd = ((int *) event_set->handles)[i]; | |
1354 | pollfds[i].events = 0; | |
1355 | pollfds[i].revents = 0; | |
1356 | if (event_set->masks[i] & SP_EVENT_RX_READY) | |
1357 | pollfds[i].events |= POLLIN; | |
1358 | if (event_set->masks[i] & SP_EVENT_TX_READY) | |
1359 | pollfds[i].events |= POLLOUT; | |
1360 | if (event_set->masks[i] & SP_EVENT_ERROR) | |
1361 | pollfds[i].events |= POLLERR; | |
1362 | } | |
1363 | ||
1364 | if (timeout) { | |
1365 | /* Get time at start of operation. */ | |
1366 | gettimeofday(&start, NULL); | |
1367 | /* Define duration of timeout. */ | |
1368 | delta.tv_sec = timeout / 1000; | |
1369 | delta.tv_usec = (timeout % 1000) * 1000; | |
1370 | /* Calculate time at which we should give up. */ | |
1371 | timeradd(&start, &delta, &end); | |
1372 | } | |
1373 | ||
1374 | /* Loop until an event occurs. */ | |
1375 | while (1) | |
1376 | { | |
1377 | if (timeout) { | |
1378 | gettimeofday(&now, NULL); | |
1379 | if (timercmp(&now, &end, >)) { | |
1380 | DEBUG("wait timed out"); | |
1381 | break; | |
1382 | } | |
1383 | timersub(&end, &now, &delta); | |
1384 | timeout_remaining = delta.tv_sec * 1000 + delta.tv_usec / 1000; | |
1385 | } | |
1386 | ||
1387 | result = poll(pollfds, event_set->count, timeout ? timeout_remaining : -1); | |
1388 | ||
1389 | if (result < 0) { | |
1390 | if (errno == EINTR) { | |
1391 | DEBUG("poll() call was interrupted, repeating"); | |
1392 | continue; | |
1393 | } else { | |
1394 | free(pollfds); | |
1395 | RETURN_FAIL("poll() failed"); | |
1396 | } | |
1397 | } else if (result == 0) { | |
1398 | DEBUG("poll() timed out"); | |
1399 | break; | |
1400 | } else { | |
1401 | DEBUG("poll() completed"); | |
1402 | break; | |
1403 | } | |
1404 | } | |
1405 | ||
1406 | free(pollfds); | |
1407 | RETURN_OK(); | |
1408 | #endif | |
1409 | } | |
1410 | ||
1411 | #ifdef USE_TERMIOS_SPEED | |
1412 | static enum sp_return get_baudrate(int fd, int *baudrate) | |
1413 | { | |
1414 | void *data; | |
1415 | ||
1416 | TRACE("%d, %p", fd, baudrate); | |
1417 | ||
1418 | DEBUG("Getting baud rate"); | |
1419 | ||
1420 | if (!(data = malloc(get_termios_size()))) | |
1421 | RETURN_ERROR(SP_ERR_MEM, "termios malloc failed"); | |
1422 | ||
1423 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { | |
1424 | free(data); | |
1425 | RETURN_FAIL("getting termios failed"); | |
1426 | } | |
1427 | ||
1428 | *baudrate = get_termios_speed(data); | |
1429 | ||
1430 | free(data); | |
1431 | ||
1432 | RETURN_OK(); | |
1433 | } | |
1434 | ||
1435 | static enum sp_return set_baudrate(int fd, int baudrate) | |
1436 | { | |
1437 | void *data; | |
1438 | ||
1439 | TRACE("%d, %d", fd, baudrate); | |
1440 | ||
1441 | DEBUG("Getting baud rate"); | |
1442 | ||
1443 | if (!(data = malloc(get_termios_size()))) | |
1444 | RETURN_ERROR(SP_ERR_MEM, "termios malloc failed"); | |
1445 | ||
1446 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { | |
1447 | free(data); | |
1448 | RETURN_FAIL("getting termios failed"); | |
1449 | } | |
1450 | ||
1451 | DEBUG("Setting baud rate"); | |
1452 | ||
1453 | set_termios_speed(data, baudrate); | |
1454 | ||
1455 | if (ioctl(fd, get_termios_set_ioctl(), data) < 0) { | |
1456 | free(data); | |
1457 | RETURN_FAIL("setting termios failed"); | |
1458 | } | |
1459 | ||
1460 | free(data); | |
1461 | ||
1462 | RETURN_OK(); | |
1463 | } | |
1464 | #endif /* USE_TERMIOS_SPEED */ | |
1465 | ||
1466 | #ifdef USE_TERMIOX | |
1467 | static enum sp_return get_flow(int fd, struct port_data *data) | |
1468 | { | |
1469 | void *termx; | |
1470 | ||
1471 | TRACE("%d, %p", fd, data); | |
1472 | ||
1473 | DEBUG("Getting advanced flow control"); | |
1474 | ||
1475 | if (!(termx = malloc(get_termiox_size()))) | |
1476 | RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed"); | |
1477 | ||
1478 | if (ioctl(fd, TCGETX, termx) < 0) { | |
1479 | free(termx); | |
1480 | RETURN_FAIL("getting termiox failed"); | |
1481 | } | |
1482 | ||
1483 | get_termiox_flow(termx, &data->rts_flow, &data->cts_flow, | |
1484 | &data->dtr_flow, &data->dsr_flow); | |
1485 | ||
1486 | free(termx); | |
1487 | ||
1488 | RETURN_OK(); | |
1489 | } | |
1490 | ||
1491 | static enum sp_return set_flow(int fd, struct port_data *data) | |
1492 | { | |
1493 | void *termx; | |
1494 | ||
1495 | TRACE("%d, %p", fd, data); | |
1496 | ||
1497 | DEBUG("Getting advanced flow control"); | |
1498 | ||
1499 | if (!(termx = malloc(get_termiox_size()))) | |
1500 | RETURN_ERROR(SP_ERR_MEM, "termiox malloc failed"); | |
1501 | ||
1502 | if (ioctl(fd, TCGETX, termx) < 0) { | |
1503 | free(termx); | |
1504 | RETURN_FAIL("getting termiox failed"); | |
1505 | } | |
1506 | ||
1507 | DEBUG("Setting advanced flow control"); | |
1508 | ||
1509 | set_termiox_flow(termx, data->rts_flow, data->cts_flow, | |
1510 | data->dtr_flow, data->dsr_flow); | |
1511 | ||
1512 | if (ioctl(fd, TCSETX, termx) < 0) { | |
1513 | free(termx); | |
1514 | RETURN_FAIL("setting termiox failed"); | |
1515 | } | |
1516 | ||
1517 | free(termx); | |
1518 | ||
1519 | RETURN_OK(); | |
1520 | } | |
1521 | #endif /* USE_TERMIOX */ | |
1522 | ||
1523 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, | |
1524 | struct sp_port_config *config) | |
1525 | { | |
1526 | unsigned int i; | |
1527 | ||
1528 | TRACE("%p, %p, %p", port, data, config); | |
1529 | ||
1530 | DEBUG("Getting configuration for port %s", port->name); | |
1531 | ||
1532 | #ifdef _WIN32 | |
1533 | if (!GetCommState(port->hdl, &data->dcb)) | |
1534 | RETURN_FAIL("GetCommState() failed"); | |
1535 | ||
1536 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1537 | if (data->dcb.BaudRate == std_baudrates[i].index) { | |
1538 | config->baudrate = std_baudrates[i].value; | |
1539 | break; | |
1540 | } | |
1541 | } | |
1542 | ||
1543 | if (i == NUM_STD_BAUDRATES) | |
1544 | /* BaudRate field can be either an index or a custom baud rate. */ | |
1545 | config->baudrate = data->dcb.BaudRate; | |
1546 | ||
1547 | config->bits = data->dcb.ByteSize; | |
1548 | ||
1549 | if (data->dcb.fParity) | |
1550 | switch (data->dcb.Parity) { | |
1551 | case NOPARITY: | |
1552 | config->parity = SP_PARITY_NONE; | |
1553 | break; | |
1554 | case ODDPARITY: | |
1555 | config->parity = SP_PARITY_ODD; | |
1556 | break; | |
1557 | case EVENPARITY: | |
1558 | config->parity = SP_PARITY_EVEN; | |
1559 | break; | |
1560 | case MARKPARITY: | |
1561 | config->parity = SP_PARITY_MARK; | |
1562 | break; | |
1563 | case SPACEPARITY: | |
1564 | config->parity = SP_PARITY_SPACE; | |
1565 | break; | |
1566 | default: | |
1567 | config->parity = -1; | |
1568 | } | |
1569 | else | |
1570 | config->parity = SP_PARITY_NONE; | |
1571 | ||
1572 | switch (data->dcb.StopBits) { | |
1573 | case ONESTOPBIT: | |
1574 | config->stopbits = 1; | |
1575 | break; | |
1576 | case TWOSTOPBITS: | |
1577 | config->stopbits = 2; | |
1578 | break; | |
1579 | default: | |
1580 | config->stopbits = -1; | |
1581 | } | |
1582 | ||
1583 | switch (data->dcb.fRtsControl) { | |
1584 | case RTS_CONTROL_DISABLE: | |
1585 | config->rts = SP_RTS_OFF; | |
1586 | break; | |
1587 | case RTS_CONTROL_ENABLE: | |
1588 | config->rts = SP_RTS_ON; | |
1589 | break; | |
1590 | case RTS_CONTROL_HANDSHAKE: | |
1591 | config->rts = SP_RTS_FLOW_CONTROL; | |
1592 | break; | |
1593 | default: | |
1594 | config->rts = -1; | |
1595 | } | |
1596 | ||
1597 | config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
1598 | ||
1599 | switch (data->dcb.fDtrControl) { | |
1600 | case DTR_CONTROL_DISABLE: | |
1601 | config->dtr = SP_DTR_OFF; | |
1602 | break; | |
1603 | case DTR_CONTROL_ENABLE: | |
1604 | config->dtr = SP_DTR_ON; | |
1605 | break; | |
1606 | case DTR_CONTROL_HANDSHAKE: | |
1607 | config->dtr = SP_DTR_FLOW_CONTROL; | |
1608 | break; | |
1609 | default: | |
1610 | config->dtr = -1; | |
1611 | } | |
1612 | ||
1613 | config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
1614 | ||
1615 | if (data->dcb.fInX) { | |
1616 | if (data->dcb.fOutX) | |
1617 | config->xon_xoff = SP_XONXOFF_INOUT; | |
1618 | else | |
1619 | config->xon_xoff = SP_XONXOFF_IN; | |
1620 | } else { | |
1621 | if (data->dcb.fOutX) | |
1622 | config->xon_xoff = SP_XONXOFF_OUT; | |
1623 | else | |
1624 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
1625 | } | |
1626 | ||
1627 | #else // !_WIN32 | |
1628 | ||
1629 | if (tcgetattr(port->fd, &data->term) < 0) | |
1630 | RETURN_FAIL("tcgetattr() failed"); | |
1631 | ||
1632 | if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0) | |
1633 | RETURN_FAIL("TIOCMGET ioctl failed"); | |
1634 | ||
1635 | #ifdef USE_TERMIOX | |
1636 | int ret = get_flow(port->fd, data); | |
1637 | ||
1638 | if (ret == SP_ERR_FAIL && errno == EINVAL) | |
1639 | data->termiox_supported = 0; | |
1640 | else if (ret < 0) | |
1641 | RETURN_CODEVAL(ret); | |
1642 | else | |
1643 | data->termiox_supported = 1; | |
1644 | #else | |
1645 | data->termiox_supported = 0; | |
1646 | #endif | |
1647 | ||
1648 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1649 | if (cfgetispeed(&data->term) == std_baudrates[i].index) { | |
1650 | config->baudrate = std_baudrates[i].value; | |
1651 | break; | |
1652 | } | |
1653 | } | |
1654 | ||
1655 | if (i == NUM_STD_BAUDRATES) { | |
1656 | #ifdef __APPLE__ | |
1657 | config->baudrate = (int)data->term.c_ispeed; | |
1658 | #elif defined(USE_TERMIOS_SPEED) | |
1659 | TRY(get_baudrate(port->fd, &config->baudrate)); | |
1660 | #else | |
1661 | config->baudrate = -1; | |
1662 | #endif | |
1663 | } | |
1664 | ||
1665 | switch (data->term.c_cflag & CSIZE) { | |
1666 | case CS8: | |
1667 | config->bits = 8; | |
1668 | break; | |
1669 | case CS7: | |
1670 | config->bits = 7; | |
1671 | break; | |
1672 | case CS6: | |
1673 | config->bits = 6; | |
1674 | break; | |
1675 | case CS5: | |
1676 | config->bits = 5; | |
1677 | break; | |
1678 | default: | |
1679 | config->bits = -1; | |
1680 | } | |
1681 | ||
1682 | if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR)) | |
1683 | config->parity = SP_PARITY_NONE; | |
1684 | else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR)) | |
1685 | config->parity = -1; | |
1686 | #ifdef CMSPAR | |
1687 | else if (data->term.c_cflag & CMSPAR) | |
1688 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_MARK : SP_PARITY_SPACE; | |
1689 | #endif | |
1690 | else | |
1691 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN; | |
1692 | ||
1693 | config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1; | |
1694 | ||
1695 | if (data->term.c_cflag & CRTSCTS) { | |
1696 | config->rts = SP_RTS_FLOW_CONTROL; | |
1697 | config->cts = SP_CTS_FLOW_CONTROL; | |
1698 | } else { | |
1699 | if (data->termiox_supported && data->rts_flow) | |
1700 | config->rts = SP_RTS_FLOW_CONTROL; | |
1701 | else | |
1702 | config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; | |
1703 | ||
1704 | config->cts = (data->termiox_supported && data->cts_flow) ? | |
1705 | SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
1706 | } | |
1707 | ||
1708 | if (data->termiox_supported && data->dtr_flow) | |
1709 | config->dtr = SP_DTR_FLOW_CONTROL; | |
1710 | else | |
1711 | config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; | |
1712 | ||
1713 | config->dsr = (data->termiox_supported && data->dsr_flow) ? | |
1714 | SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
1715 | ||
1716 | if (data->term.c_iflag & IXOFF) { | |
1717 | if (data->term.c_iflag & IXON) | |
1718 | config->xon_xoff = SP_XONXOFF_INOUT; | |
1719 | else | |
1720 | config->xon_xoff = SP_XONXOFF_IN; | |
1721 | } else { | |
1722 | if (data->term.c_iflag & IXON) | |
1723 | config->xon_xoff = SP_XONXOFF_OUT; | |
1724 | else | |
1725 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
1726 | } | |
1727 | #endif | |
1728 | ||
1729 | RETURN_OK(); | |
1730 | } | |
1731 | ||
1732 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
1733 | const struct sp_port_config *config) | |
1734 | { | |
1735 | unsigned int i; | |
1736 | #ifdef __APPLE__ | |
1737 | BAUD_TYPE baud_nonstd; | |
1738 | ||
1739 | baud_nonstd = B0; | |
1740 | #endif | |
1741 | #ifdef USE_TERMIOS_SPEED | |
1742 | int baud_nonstd = 0; | |
1743 | #endif | |
1744 | ||
1745 | TRACE("%p, %p, %p", port, data, config); | |
1746 | ||
1747 | DEBUG("Setting configuration for port %s", port->name); | |
1748 | ||
1749 | #ifdef _WIN32 | |
1750 | if (config->baudrate >= 0) { | |
1751 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1752 | if (config->baudrate == std_baudrates[i].value) { | |
1753 | data->dcb.BaudRate = std_baudrates[i].index; | |
1754 | break; | |
1755 | } | |
1756 | } | |
1757 | ||
1758 | if (i == NUM_STD_BAUDRATES) | |
1759 | data->dcb.BaudRate = config->baudrate; | |
1760 | } | |
1761 | ||
1762 | if (config->bits >= 0) | |
1763 | data->dcb.ByteSize = config->bits; | |
1764 | ||
1765 | if (config->parity >= 0) { | |
1766 | switch (config->parity) { | |
1767 | case SP_PARITY_NONE: | |
1768 | data->dcb.Parity = NOPARITY; | |
1769 | break; | |
1770 | case SP_PARITY_ODD: | |
1771 | data->dcb.Parity = ODDPARITY; | |
1772 | break; | |
1773 | case SP_PARITY_EVEN: | |
1774 | data->dcb.Parity = EVENPARITY; | |
1775 | break; | |
1776 | case SP_PARITY_MARK: | |
1777 | data->dcb.Parity = MARKPARITY; | |
1778 | break; | |
1779 | case SP_PARITY_SPACE: | |
1780 | data->dcb.Parity = SPACEPARITY; | |
1781 | break; | |
1782 | default: | |
1783 | RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting"); | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | if (config->stopbits >= 0) { | |
1788 | switch (config->stopbits) { | |
1789 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ | |
1790 | case 1: | |
1791 | data->dcb.StopBits = ONESTOPBIT; | |
1792 | break; | |
1793 | case 2: | |
1794 | data->dcb.StopBits = TWOSTOPBITS; | |
1795 | break; | |
1796 | default: | |
1797 | RETURN_ERROR(SP_ERR_ARG, "Invalid stop bit setting"); | |
1798 | } | |
1799 | } | |
1800 | ||
1801 | if (config->rts >= 0) { | |
1802 | switch (config->rts) { | |
1803 | case SP_RTS_OFF: | |
1804 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
1805 | break; | |
1806 | case SP_RTS_ON: | |
1807 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
1808 | break; | |
1809 | case SP_RTS_FLOW_CONTROL: | |
1810 | data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
1811 | break; | |
1812 | default: | |
1813 | RETURN_ERROR(SP_ERR_ARG, "Invalid RTS setting"); | |
1814 | } | |
1815 | } | |
1816 | ||
1817 | if (config->cts >= 0) { | |
1818 | switch (config->cts) { | |
1819 | case SP_CTS_IGNORE: | |
1820 | data->dcb.fOutxCtsFlow = FALSE; | |
1821 | break; | |
1822 | case SP_CTS_FLOW_CONTROL: | |
1823 | data->dcb.fOutxCtsFlow = TRUE; | |
1824 | break; | |
1825 | default: | |
1826 | RETURN_ERROR(SP_ERR_ARG, "Invalid CTS setting"); | |
1827 | } | |
1828 | } | |
1829 | ||
1830 | if (config->dtr >= 0) { | |
1831 | switch (config->dtr) { | |
1832 | case SP_DTR_OFF: | |
1833 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
1834 | break; | |
1835 | case SP_DTR_ON: | |
1836 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
1837 | break; | |
1838 | case SP_DTR_FLOW_CONTROL: | |
1839 | data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; | |
1840 | break; | |
1841 | default: | |
1842 | RETURN_ERROR(SP_ERR_ARG, "Invalid DTR setting"); | |
1843 | } | |
1844 | } | |
1845 | ||
1846 | if (config->dsr >= 0) { | |
1847 | switch (config->dsr) { | |
1848 | case SP_DSR_IGNORE: | |
1849 | data->dcb.fOutxDsrFlow = FALSE; | |
1850 | break; | |
1851 | case SP_DSR_FLOW_CONTROL: | |
1852 | data->dcb.fOutxDsrFlow = TRUE; | |
1853 | break; | |
1854 | default: | |
1855 | RETURN_ERROR(SP_ERR_ARG, "Invalid DSR setting"); | |
1856 | } | |
1857 | } | |
1858 | ||
1859 | if (config->xon_xoff >= 0) { | |
1860 | switch (config->xon_xoff) { | |
1861 | case SP_XONXOFF_DISABLED: | |
1862 | data->dcb.fInX = FALSE; | |
1863 | data->dcb.fOutX = FALSE; | |
1864 | break; | |
1865 | case SP_XONXOFF_IN: | |
1866 | data->dcb.fInX = TRUE; | |
1867 | data->dcb.fOutX = FALSE; | |
1868 | break; | |
1869 | case SP_XONXOFF_OUT: | |
1870 | data->dcb.fInX = FALSE; | |
1871 | data->dcb.fOutX = TRUE; | |
1872 | break; | |
1873 | case SP_XONXOFF_INOUT: | |
1874 | data->dcb.fInX = TRUE; | |
1875 | data->dcb.fOutX = TRUE; | |
1876 | break; | |
1877 | default: | |
1878 | RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting"); | |
1879 | } | |
1880 | } | |
1881 | ||
1882 | if (!SetCommState(port->hdl, &data->dcb)) | |
1883 | RETURN_FAIL("SetCommState() failed"); | |
1884 | ||
1885 | #else /* !_WIN32 */ | |
1886 | ||
1887 | int controlbits; | |
1888 | ||
1889 | if (config->baudrate >= 0) { | |
1890 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { | |
1891 | if (config->baudrate == std_baudrates[i].value) { | |
1892 | if (cfsetospeed(&data->term, std_baudrates[i].index) < 0) | |
1893 | RETURN_FAIL("cfsetospeed() failed"); | |
1894 | ||
1895 | if (cfsetispeed(&data->term, std_baudrates[i].index) < 0) | |
1896 | RETURN_FAIL("cfsetispeed() failed"); | |
1897 | break; | |
1898 | } | |
1899 | } | |
1900 | ||
1901 | /* Non-standard baud rate */ | |
1902 | if (i == NUM_STD_BAUDRATES) { | |
1903 | #ifdef __APPLE__ | |
1904 | /* Set "dummy" baud rate. */ | |
1905 | if (cfsetspeed(&data->term, B9600) < 0) | |
1906 | RETURN_FAIL("cfsetspeed() failed"); | |
1907 | baud_nonstd = config->baudrate; | |
1908 | #elif defined(USE_TERMIOS_SPEED) | |
1909 | baud_nonstd = 1; | |
1910 | #else | |
1911 | RETURN_ERROR(SP_ERR_SUPP, "Non-standard baudrate not supported"); | |
1912 | #endif | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | if (config->bits >= 0) { | |
1917 | data->term.c_cflag &= ~CSIZE; | |
1918 | switch (config->bits) { | |
1919 | case 8: | |
1920 | data->term.c_cflag |= CS8; | |
1921 | break; | |
1922 | case 7: | |
1923 | data->term.c_cflag |= CS7; | |
1924 | break; | |
1925 | case 6: | |
1926 | data->term.c_cflag |= CS6; | |
1927 | break; | |
1928 | case 5: | |
1929 | data->term.c_cflag |= CS5; | |
1930 | break; | |
1931 | default: | |
1932 | RETURN_ERROR(SP_ERR_ARG, "Invalid data bits setting"); | |
1933 | } | |
1934 | } | |
1935 | ||
1936 | if (config->parity >= 0) { | |
1937 | data->term.c_iflag &= ~IGNPAR; | |
1938 | data->term.c_cflag &= ~(PARENB | PARODD); | |
1939 | #ifdef CMSPAR | |
1940 | data->term.c_cflag &= ~CMSPAR; | |
1941 | #endif | |
1942 | switch (config->parity) { | |
1943 | case SP_PARITY_NONE: | |
1944 | data->term.c_iflag |= IGNPAR; | |
1945 | break; | |
1946 | case SP_PARITY_EVEN: | |
1947 | data->term.c_cflag |= PARENB; | |
1948 | break; | |
1949 | case SP_PARITY_ODD: | |
1950 | data->term.c_cflag |= PARENB | PARODD; | |
1951 | break; | |
1952 | #ifdef CMSPAR | |
1953 | case SP_PARITY_MARK: | |
1954 | data->term.c_cflag |= PARENB | PARODD; | |
1955 | data->term.c_cflag |= CMSPAR; | |
1956 | break; | |
1957 | case SP_PARITY_SPACE: | |
1958 | data->term.c_cflag |= PARENB; | |
1959 | data->term.c_cflag |= CMSPAR; | |
1960 | break; | |
1961 | #else | |
1962 | case SP_PARITY_MARK: | |
1963 | case SP_PARITY_SPACE: | |
1964 | RETURN_ERROR(SP_ERR_SUPP, "Mark/space parity not supported"); | |
1965 | #endif | |
1966 | default: | |
1967 | RETURN_ERROR(SP_ERR_ARG, "Invalid parity setting"); | |
1968 | } | |
1969 | } | |
1970 | ||
1971 | if (config->stopbits >= 0) { | |
1972 | data->term.c_cflag &= ~CSTOPB; | |
1973 | switch (config->stopbits) { | |
1974 | case 1: | |
1975 | data->term.c_cflag &= ~CSTOPB; | |
1976 | break; | |
1977 | case 2: | |
1978 | data->term.c_cflag |= CSTOPB; | |
1979 | break; | |
1980 | default: | |
1981 | RETURN_ERROR(SP_ERR_ARG, "Invalid stop bits setting"); | |
1982 | } | |
1983 | } | |
1984 | ||
1985 | if (config->rts >= 0 || config->cts >= 0) { | |
1986 | if (data->termiox_supported) { | |
1987 | data->rts_flow = data->cts_flow = 0; | |
1988 | switch (config->rts) { | |
1989 | case SP_RTS_OFF: | |
1990 | case SP_RTS_ON: | |
1991 | controlbits = TIOCM_RTS; | |
1992 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
1993 | RETURN_FAIL("Setting RTS signal level failed"); | |
1994 | break; | |
1995 | case SP_RTS_FLOW_CONTROL: | |
1996 | data->rts_flow = 1; | |
1997 | break; | |
1998 | default: | |
1999 | break; | |
2000 | } | |
2001 | if (config->cts == SP_CTS_FLOW_CONTROL) | |
2002 | data->cts_flow = 1; | |
2003 | ||
2004 | if (data->rts_flow && data->cts_flow) | |
2005 | data->term.c_iflag |= CRTSCTS; | |
2006 | else | |
2007 | data->term.c_iflag &= ~CRTSCTS; | |
2008 | } else { | |
2009 | /* Asymmetric use of RTS/CTS not supported. */ | |
2010 | if (data->term.c_iflag & CRTSCTS) { | |
2011 | /* Flow control can only be disabled for both RTS & CTS together. */ | |
2012 | if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) { | |
2013 | if (config->cts != SP_CTS_IGNORE) | |
2014 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together"); | |
2015 | } | |
2016 | if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) { | |
2017 | if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL) | |
2018 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be disabled together"); | |
2019 | } | |
2020 | } else { | |
2021 | /* Flow control can only be enabled for both RTS & CTS together. */ | |
2022 | if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) || | |
2023 | ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL))) | |
2024 | RETURN_ERROR(SP_ERR_SUPP, "RTS & CTS flow control must be enabled together"); | |
2025 | } | |
2026 | ||
2027 | if (config->rts >= 0) { | |
2028 | if (config->rts == SP_RTS_FLOW_CONTROL) { | |
2029 | data->term.c_iflag |= CRTSCTS; | |
2030 | } else { | |
2031 | controlbits = TIOCM_RTS; | |
2032 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, | |
2033 | &controlbits) < 0) | |
2034 | RETURN_FAIL("Setting RTS signal level failed"); | |
2035 | } | |
2036 | } | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | if (config->dtr >= 0 || config->dsr >= 0) { | |
2041 | if (data->termiox_supported) { | |
2042 | data->dtr_flow = data->dsr_flow = 0; | |
2043 | switch (config->dtr) { | |
2044 | case SP_DTR_OFF: | |
2045 | case SP_DTR_ON: | |
2046 | controlbits = TIOCM_DTR; | |
2047 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
2048 | RETURN_FAIL("Setting DTR signal level failed"); | |
2049 | break; | |
2050 | case SP_DTR_FLOW_CONTROL: | |
2051 | data->dtr_flow = 1; | |
2052 | break; | |
2053 | default: | |
2054 | break; | |
2055 | } | |
2056 | if (config->dsr == SP_DSR_FLOW_CONTROL) | |
2057 | data->dsr_flow = 1; | |
2058 | } else { | |
2059 | /* DTR/DSR flow control not supported. */ | |
2060 | if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL) | |
2061 | RETURN_ERROR(SP_ERR_SUPP, "DTR/DSR flow control not supported"); | |
2062 | ||
2063 | if (config->dtr >= 0) { | |
2064 | controlbits = TIOCM_DTR; | |
2065 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, | |
2066 | &controlbits) < 0) | |
2067 | RETURN_FAIL("Setting DTR signal level failed"); | |
2068 | } | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | if (config->xon_xoff >= 0) { | |
2073 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
2074 | switch (config->xon_xoff) { | |
2075 | case SP_XONXOFF_DISABLED: | |
2076 | break; | |
2077 | case SP_XONXOFF_IN: | |
2078 | data->term.c_iflag |= IXOFF; | |
2079 | break; | |
2080 | case SP_XONXOFF_OUT: | |
2081 | data->term.c_iflag |= IXON | IXANY; | |
2082 | break; | |
2083 | case SP_XONXOFF_INOUT: | |
2084 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
2085 | break; | |
2086 | default: | |
2087 | RETURN_ERROR(SP_ERR_ARG, "Invalid XON/XOFF setting"); | |
2088 | } | |
2089 | } | |
2090 | ||
2091 | if (tcsetattr(port->fd, TCSANOW, &data->term) < 0) | |
2092 | RETURN_FAIL("tcsetattr() failed"); | |
2093 | ||
2094 | #ifdef __APPLE__ | |
2095 | if (baud_nonstd != B0) { | |
2096 | if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1) | |
2097 | RETURN_FAIL("IOSSIOSPEED ioctl failed"); | |
2098 | /* Set baud rates in data->term to correct, but incompatible | |
2099 | * with tcsetattr() value, same as delivered by tcgetattr(). */ | |
2100 | if (cfsetspeed(&data->term, baud_nonstd) < 0) | |
2101 | RETURN_FAIL("cfsetspeed() failed"); | |
2102 | } | |
2103 | #elif defined(__linux__) | |
2104 | #ifdef USE_TERMIOS_SPEED | |
2105 | if (baud_nonstd) | |
2106 | TRY(set_baudrate(port->fd, config->baudrate)); | |
2107 | #endif | |
2108 | #ifdef USE_TERMIOX | |
2109 | if (data->termiox_supported) | |
2110 | TRY(set_flow(port->fd, data)); | |
2111 | #endif | |
2112 | #endif | |
2113 | ||
2114 | #endif /* !_WIN32 */ | |
2115 | ||
2116 | RETURN_OK(); | |
2117 | } | |
2118 | ||
2119 | enum sp_return sp_new_config(struct sp_port_config **config_ptr) | |
2120 | { | |
2121 | struct sp_port_config *config; | |
2122 | ||
2123 | TRACE("%p", config_ptr); | |
2124 | ||
2125 | if (!config_ptr) | |
2126 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
2127 | ||
2128 | *config_ptr = NULL; | |
2129 | ||
2130 | if (!(config = malloc(sizeof(struct sp_port_config)))) | |
2131 | RETURN_ERROR(SP_ERR_MEM, "config malloc failed"); | |
2132 | ||
2133 | config->baudrate = -1; | |
2134 | config->bits = -1; | |
2135 | config->parity = -1; | |
2136 | config->stopbits = -1; | |
2137 | config->rts = -1; | |
2138 | config->cts = -1; | |
2139 | config->dtr = -1; | |
2140 | config->dsr = -1; | |
2141 | ||
2142 | *config_ptr = config; | |
2143 | ||
2144 | RETURN_OK(); | |
2145 | } | |
2146 | ||
2147 | void sp_free_config(struct sp_port_config *config) | |
2148 | { | |
2149 | TRACE("%p", config); | |
2150 | ||
2151 | if (!config) | |
2152 | DEBUG("Null config"); | |
2153 | else | |
2154 | free(config); | |
2155 | ||
2156 | RETURN(); | |
2157 | } | |
2158 | ||
2159 | enum sp_return sp_get_config(struct sp_port *port, struct sp_port_config *config) | |
2160 | { | |
2161 | struct port_data data; | |
2162 | ||
2163 | TRACE("%p, %p", port, config); | |
2164 | ||
2165 | CHECK_OPEN_PORT(); | |
2166 | ||
2167 | if (!config) | |
2168 | RETURN_ERROR(SP_ERR_ARG, "Null config"); | |
2169 | ||
2170 | TRY(get_config(port, &data, config)); | |
2171 | ||
2172 | RETURN_OK(); | |
2173 | } | |
2174 | ||
2175 | enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config) | |
2176 | { | |
2177 | struct port_data data; | |
2178 | struct sp_port_config prev_config; | |
2179 | ||
2180 | TRACE("%p, %p", port, config); | |
2181 | ||
2182 | CHECK_OPEN_PORT(); | |
2183 | ||
2184 | if (!config) | |
2185 | RETURN_ERROR(SP_ERR_ARG, "Null config"); | |
2186 | ||
2187 | TRY(get_config(port, &data, &prev_config)); | |
2188 | TRY(set_config(port, &data, config)); | |
2189 | ||
2190 | RETURN_OK(); | |
2191 | } | |
2192 | ||
2193 | #define CREATE_ACCESSORS(x, type) \ | |
2194 | enum sp_return sp_set_##x(struct sp_port *port, type x) { \ | |
2195 | struct port_data data; \ | |
2196 | struct sp_port_config config; \ | |
2197 | TRACE("%p, %d", port, x); \ | |
2198 | CHECK_OPEN_PORT(); \ | |
2199 | TRY(get_config(port, &data, &config)); \ | |
2200 | config.x = x; \ | |
2201 | TRY(set_config(port, &data, &config)); \ | |
2202 | RETURN_OK(); \ | |
2203 | } \ | |
2204 | enum sp_return sp_get_config_##x(const struct sp_port_config *config, type *x) { \ | |
2205 | TRACE("%p, %p", config, x); \ | |
2206 | if (!config) \ | |
2207 | RETURN_ERROR(SP_ERR_ARG, "Null config"); \ | |
2208 | *x = config->x; \ | |
2209 | RETURN_OK(); \ | |
2210 | } \ | |
2211 | enum sp_return sp_set_config_##x(struct sp_port_config *config, type x) { \ | |
2212 | TRACE("%p, %d", config, x); \ | |
2213 | if (!config) \ | |
2214 | RETURN_ERROR(SP_ERR_ARG, "Null config"); \ | |
2215 | config->x = x; \ | |
2216 | RETURN_OK(); \ | |
2217 | } | |
2218 | ||
2219 | CREATE_ACCESSORS(baudrate, int) | |
2220 | CREATE_ACCESSORS(bits, int) | |
2221 | CREATE_ACCESSORS(parity, enum sp_parity) | |
2222 | CREATE_ACCESSORS(stopbits, int) | |
2223 | CREATE_ACCESSORS(rts, enum sp_rts) | |
2224 | CREATE_ACCESSORS(cts, enum sp_cts) | |
2225 | CREATE_ACCESSORS(dtr, enum sp_dtr) | |
2226 | CREATE_ACCESSORS(dsr, enum sp_dsr) | |
2227 | CREATE_ACCESSORS(xon_xoff, enum sp_xonxoff) | |
2228 | ||
2229 | enum sp_return sp_set_config_flowcontrol(struct sp_port_config *config, enum sp_flowcontrol flowcontrol) | |
2230 | { | |
2231 | if (!config) | |
2232 | RETURN_ERROR(SP_ERR_ARG, "Null configuration"); | |
2233 | ||
2234 | if (flowcontrol > SP_FLOWCONTROL_DTRDSR) | |
2235 | RETURN_ERROR(SP_ERR_ARG, "Invalid flow control setting"); | |
2236 | ||
2237 | if (flowcontrol == SP_FLOWCONTROL_XONXOFF) | |
2238 | config->xon_xoff = SP_XONXOFF_INOUT; | |
2239 | else | |
2240 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
2241 | ||
2242 | if (flowcontrol == SP_FLOWCONTROL_RTSCTS) { | |
2243 | config->rts = SP_RTS_FLOW_CONTROL; | |
2244 | config->cts = SP_CTS_FLOW_CONTROL; | |
2245 | } else { | |
2246 | if (config->rts == SP_RTS_FLOW_CONTROL) | |
2247 | config->rts = SP_RTS_ON; | |
2248 | config->cts = SP_CTS_IGNORE; | |
2249 | } | |
2250 | ||
2251 | if (flowcontrol == SP_FLOWCONTROL_DTRDSR) { | |
2252 | config->dtr = SP_DTR_FLOW_CONTROL; | |
2253 | config->dsr = SP_DSR_FLOW_CONTROL; | |
2254 | } else { | |
2255 | if (config->dtr == SP_DTR_FLOW_CONTROL) | |
2256 | config->dtr = SP_DTR_ON; | |
2257 | config->dsr = SP_DSR_IGNORE; | |
2258 | } | |
2259 | ||
2260 | RETURN_OK(); | |
2261 | } | |
2262 | ||
2263 | enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol) | |
2264 | { | |
2265 | struct port_data data; | |
2266 | struct sp_port_config config; | |
2267 | ||
2268 | TRACE("%p, %d", port, flowcontrol); | |
2269 | ||
2270 | CHECK_OPEN_PORT(); | |
2271 | ||
2272 | TRY(get_config(port, &data, &config)); | |
2273 | ||
2274 | TRY(sp_set_config_flowcontrol(&config, flowcontrol)); | |
2275 | ||
2276 | TRY(set_config(port, &data, &config)); | |
2277 | ||
2278 | RETURN_OK(); | |
2279 | } | |
2280 | ||
2281 | enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signals) | |
2282 | { | |
2283 | TRACE("%p, %p", port, signals); | |
2284 | ||
2285 | CHECK_OPEN_PORT(); | |
2286 | ||
2287 | if (!signals) | |
2288 | RETURN_ERROR(SP_ERR_ARG, "Null result pointer"); | |
2289 | ||
2290 | DEBUG("Getting control signals for port %s", port->name); | |
2291 | ||
2292 | *signals = 0; | |
2293 | #ifdef _WIN32 | |
2294 | DWORD bits; | |
2295 | if (GetCommModemStatus(port->hdl, &bits) == 0) | |
2296 | RETURN_FAIL("GetCommModemStatus() failed"); | |
2297 | if (bits & MS_CTS_ON) | |
2298 | *signals |= SP_SIG_CTS; | |
2299 | if (bits & MS_DSR_ON) | |
2300 | *signals |= SP_SIG_DSR; | |
2301 | if (bits & MS_RLSD_ON) | |
2302 | *signals |= SP_SIG_DCD; | |
2303 | if (bits & MS_RING_ON) | |
2304 | *signals |= SP_SIG_RI; | |
2305 | #else | |
2306 | int bits; | |
2307 | if (ioctl(port->fd, TIOCMGET, &bits) < 0) | |
2308 | RETURN_FAIL("TIOCMGET ioctl failed"); | |
2309 | if (bits & TIOCM_CTS) | |
2310 | *signals |= SP_SIG_CTS; | |
2311 | if (bits & TIOCM_DSR) | |
2312 | *signals |= SP_SIG_DSR; | |
2313 | if (bits & TIOCM_CAR) | |
2314 | *signals |= SP_SIG_DCD; | |
2315 | if (bits & TIOCM_RNG) | |
2316 | *signals |= SP_SIG_RI; | |
2317 | #endif | |
2318 | RETURN_OK(); | |
2319 | } | |
2320 | ||
2321 | enum sp_return sp_start_break(struct sp_port *port) | |
2322 | { | |
2323 | TRACE("%p", port); | |
2324 | ||
2325 | CHECK_OPEN_PORT(); | |
2326 | #ifdef _WIN32 | |
2327 | if (SetCommBreak(port->hdl) == 0) | |
2328 | RETURN_FAIL("SetCommBreak() failed"); | |
2329 | #else | |
2330 | if (ioctl(port->fd, TIOCSBRK, 1) < 0) | |
2331 | RETURN_FAIL("TIOCSBRK ioctl failed"); | |
2332 | #endif | |
2333 | ||
2334 | RETURN_OK(); | |
2335 | } | |
2336 | ||
2337 | enum sp_return sp_end_break(struct sp_port *port) | |
2338 | { | |
2339 | TRACE("%p", port); | |
2340 | ||
2341 | CHECK_OPEN_PORT(); | |
2342 | #ifdef _WIN32 | |
2343 | if (ClearCommBreak(port->hdl) == 0) | |
2344 | RETURN_FAIL("ClearCommBreak() failed"); | |
2345 | #else | |
2346 | if (ioctl(port->fd, TIOCCBRK, 1) < 0) | |
2347 | RETURN_FAIL("TIOCCBRK ioctl failed"); | |
2348 | #endif | |
2349 | ||
2350 | RETURN_OK(); | |
2351 | } | |
2352 | ||
2353 | int sp_last_error_code(void) | |
2354 | { | |
2355 | TRACE(""); | |
2356 | #ifdef _WIN32 | |
2357 | RETURN_VALUE("%d", GetLastError()); | |
2358 | #else | |
2359 | RETURN_VALUE("%d", errno); | |
2360 | #endif | |
2361 | } | |
2362 | ||
2363 | char *sp_last_error_message(void) | |
2364 | { | |
2365 | TRACE(""); | |
2366 | ||
2367 | #ifdef _WIN32 | |
2368 | LPVOID message; | |
2369 | DWORD error = GetLastError(); | |
2370 | ||
2371 | FormatMessage( | |
2372 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
2373 | FORMAT_MESSAGE_FROM_SYSTEM | | |
2374 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
2375 | NULL, | |
2376 | error, | |
2377 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
2378 | (LPTSTR) &message, | |
2379 | 0, NULL ); | |
2380 | ||
2381 | RETURN_VALUE("%s", message); | |
2382 | #else | |
2383 | RETURN_VALUE("%s", strerror(errno)); | |
2384 | #endif | |
2385 | } | |
2386 | ||
2387 | void sp_free_error_message(char *message) | |
2388 | { | |
2389 | TRACE("%s", message); | |
2390 | ||
2391 | #ifdef _WIN32 | |
2392 | LocalFree(message); | |
2393 | #else | |
2394 | (void)message; | |
2395 | #endif | |
2396 | ||
2397 | RETURN(); | |
2398 | } | |
2399 | ||
2400 | void sp_set_debug_handler(void (*handler)(const char *format, ...)) | |
2401 | { | |
2402 | TRACE("%p", handler); | |
2403 | ||
2404 | sp_debug_handler = handler; | |
2405 | ||
2406 | RETURN(); | |
2407 | } | |
2408 | ||
2409 | void sp_default_debug_handler(const char *format, ...) | |
2410 | { | |
2411 | va_list args; | |
2412 | va_start(args, format); | |
2413 | if (getenv("LIBSERIALPORT_DEBUG")) { | |
2414 | fputs("sp: ", stderr); | |
2415 | vfprintf(stderr, format, args); | |
2416 | } | |
2417 | va_end(args); | |
2418 | } | |
2419 | ||
2420 | int sp_get_major_package_version(void) | |
2421 | { | |
2422 | return SP_PACKAGE_VERSION_MAJOR; | |
2423 | } | |
2424 | ||
2425 | int sp_get_minor_package_version(void) | |
2426 | { | |
2427 | return SP_PACKAGE_VERSION_MINOR; | |
2428 | } | |
2429 | ||
2430 | int sp_get_micro_package_version(void) | |
2431 | { | |
2432 | return SP_PACKAGE_VERSION_MICRO; | |
2433 | } | |
2434 | ||
2435 | const char *sp_get_package_version_string(void) | |
2436 | { | |
2437 | return SP_PACKAGE_VERSION_STRING; | |
2438 | } | |
2439 | ||
2440 | int sp_get_current_lib_version(void) | |
2441 | { | |
2442 | return SP_LIB_VERSION_CURRENT; | |
2443 | } | |
2444 | ||
2445 | int sp_get_revision_lib_version(void) | |
2446 | { | |
2447 | return SP_LIB_VERSION_REVISION; | |
2448 | } | |
2449 | ||
2450 | int sp_get_age_lib_version(void) | |
2451 | { | |
2452 | return SP_LIB_VERSION_AGE; | |
2453 | } | |
2454 | ||
2455 | const char *sp_get_lib_version_string(void) | |
2456 | { | |
2457 | return SP_LIB_VERSION_STRING; | |
2458 | } | |
2459 | ||
2460 | /** @} */ |