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Commit | Line | Data |
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74510d4b ML |
1 | /* |
2 | * This file is part of the libserialport project. | |
3 | * | |
4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> | |
5 | * Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de> | |
6 | * Copyright (C) 2013 Martin Ling <martin-libserialport@earth.li> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU Lesser General Public License as | |
10 | * published by the Free Software Foundation, either version 3 of the | |
11 | * License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include <string.h> | |
23 | #include <sys/types.h> | |
24 | #include <sys/stat.h> | |
25 | #include <fcntl.h> | |
26 | #include <unistd.h> | |
3b63f34d ML |
27 | #include <stdlib.h> |
28 | #include <errno.h> | |
74510d4b ML |
29 | #ifdef _WIN32 |
30 | #include <windows.h> | |
3b63f34d | 31 | #include <tchar.h> |
767c5ba8 | 32 | #include <stdio.h> |
74510d4b | 33 | #else |
74510d4b ML |
34 | #include <termios.h> |
35 | #include <sys/ioctl.h> | |
36 | #endif | |
3b63f34d | 37 | #ifdef __APPLE__ |
1ebf4347 ML |
38 | #include <IOKit/IOKitLib.h> |
39 | #include <IOKit/serial/IOSerialKeys.h> | |
40 | #include <sys/syslimits.h> | |
3b63f34d ML |
41 | #endif |
42 | #ifdef __linux__ | |
43 | #include "libudev.h" | |
4b97c9fc | 44 | #include "linux/serial.h" |
3b63f34d | 45 | #endif |
74510d4b | 46 | |
f6a1fb65 | 47 | #include "libserialport.h" |
74510d4b | 48 | |
8094e4a0 ML |
49 | struct sp_port_data { |
50 | #ifdef _WIN32 | |
51 | DCB dcb; | |
52 | #else | |
53 | struct termios term; | |
8094e4a0 ML |
54 | int rts; |
55 | int dtr; | |
56 | #endif | |
57 | }; | |
58 | ||
77f262c4 | 59 | int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) |
d54e9004 ML |
60 | { |
61 | struct sp_port *port; | |
5919c913 | 62 | int len; |
d54e9004 | 63 | |
32b5ac05 ML |
64 | if (!port_ptr) |
65 | return SP_ERR_ARG; | |
66 | ||
77f262c4 ML |
67 | *port_ptr = NULL; |
68 | ||
d4babed2 | 69 | if (!portname) |
77f262c4 | 70 | return SP_ERR_ARG; |
d4babed2 | 71 | |
d54e9004 | 72 | if (!(port = malloc(sizeof(struct sp_port)))) |
77f262c4 | 73 | return SP_ERR_MEM; |
d54e9004 | 74 | |
5919c913 ML |
75 | len = strlen(portname) + 1; |
76 | ||
d54e9004 ML |
77 | if (!(port->name = malloc(len))) |
78 | { | |
79 | free(port); | |
77f262c4 | 80 | return SP_ERR_MEM; |
d54e9004 ML |
81 | } |
82 | ||
83 | memcpy(port->name, portname, len); | |
84 | ||
77f262c4 ML |
85 | *port_ptr = port; |
86 | ||
87 | return SP_OK; | |
d54e9004 ML |
88 | } |
89 | ||
32b5ac05 ML |
90 | int sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr) |
91 | { | |
92 | if (!copy_ptr) | |
93 | return SP_ERR_ARG; | |
94 | ||
95 | *copy_ptr = NULL; | |
96 | ||
97 | if (!port || !port->name) | |
98 | return SP_ERR_ARG; | |
99 | ||
100 | return sp_get_port_by_name(port->name, copy_ptr); | |
101 | } | |
102 | ||
e3b2f7a4 ML |
103 | void sp_free_port(struct sp_port *port) |
104 | { | |
105 | if (!port) | |
106 | return; | |
107 | ||
108 | if (port->name) | |
109 | free(port->name); | |
110 | ||
111 | free(port); | |
112 | } | |
113 | ||
5919c913 | 114 | static struct sp_port **sp_list_append(struct sp_port **list, const char *portname) |
3b63f34d ML |
115 | { |
116 | void *tmp; | |
117 | unsigned int count; | |
f92f1f0c | 118 | |
3b63f34d | 119 | for (count = 0; list[count]; count++); |
d54e9004 | 120 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) |
3b63f34d ML |
121 | goto fail; |
122 | list = tmp; | |
77f262c4 | 123 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) |
3b63f34d | 124 | goto fail; |
db2794ce | 125 | list[count + 1] = NULL; |
3b63f34d | 126 | return list; |
f92f1f0c | 127 | |
3b63f34d ML |
128 | fail: |
129 | sp_free_port_list(list); | |
130 | return NULL; | |
131 | } | |
132 | ||
77f262c4 | 133 | int sp_list_ports(struct sp_port ***list_ptr) |
3b63f34d | 134 | { |
d54e9004 | 135 | struct sp_port **list; |
77f262c4 | 136 | int ret = SP_OK; |
24c1a4bb | 137 | |
d54e9004 | 138 | if (!(list = malloc(sizeof(struct sp_port **)))) |
f92f1f0c | 139 | return SP_ERR_MEM; |
24c1a4bb ML |
140 | |
141 | list[0] = NULL; | |
3b63f34d ML |
142 | |
143 | #ifdef _WIN32 | |
144 | HKEY key; | |
bdfb5b8c ML |
145 | TCHAR *value, *data; |
146 | DWORD max_value_len, max_data_size, max_data_len; | |
147 | DWORD value_len, data_size, data_len; | |
3b63f34d | 148 | DWORD type, index = 0; |
8b532d9c ML |
149 | char *name; |
150 | int name_len; | |
3b63f34d ML |
151 | |
152 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
153 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) | |
77f262c4 ML |
154 | { |
155 | ret = SP_ERR_FAIL; | |
156 | goto out_done; | |
157 | } | |
3b63f34d | 158 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
bdfb5b8c | 159 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) |
77f262c4 ML |
160 | { |
161 | ret = SP_ERR_FAIL; | |
3b63f34d | 162 | goto out_close; |
77f262c4 | 163 | } |
3b63f34d | 164 | max_data_len = max_data_size / sizeof(TCHAR); |
bdfb5b8c | 165 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) |
77f262c4 ML |
166 | { |
167 | ret = SP_ERR_MEM; | |
3b63f34d | 168 | goto out_close; |
77f262c4 | 169 | } |
3b63f34d | 170 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) |
77f262c4 ML |
171 | { |
172 | ret = SP_ERR_MEM; | |
bdfb5b8c | 173 | goto out_free_value; |
77f262c4 | 174 | } |
3b63f34d | 175 | while ( |
d9573bad | 176 | value_len = max_value_len + 1, |
3b63f34d | 177 | data_size = max_data_size, |
bdfb5b8c | 178 | RegEnumValue(key, index, value, &value_len, |
3b63f34d ML |
179 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) |
180 | { | |
181 | data_len = data_size / sizeof(TCHAR); | |
182 | data[data_len] = '\0'; | |
8b532d9c ML |
183 | #ifdef UNICODE |
184 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL) | |
185 | #else | |
186 | name_len = data_len + 1; | |
187 | #endif | |
188 | if (!(name = malloc(name_len))) | |
77f262c4 ML |
189 | { |
190 | ret = SP_ERR_MEM; | |
8b532d9c | 191 | goto out; |
77f262c4 | 192 | } |
8b532d9c ML |
193 | #ifdef UNICODE |
194 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); | |
195 | #else | |
196 | strcpy(name, data); | |
197 | #endif | |
77f262c4 ML |
198 | if (type == REG_SZ && !(list = sp_list_append(list, name))) |
199 | { | |
200 | ret = SP_ERR_MEM; | |
201 | goto out; | |
202 | } | |
3b63f34d ML |
203 | index++; |
204 | } | |
205 | out: | |
206 | free(data); | |
bdfb5b8c ML |
207 | out_free_value: |
208 | free(value); | |
3b63f34d ML |
209 | out_close: |
210 | RegCloseKey(key); | |
77f262c4 | 211 | out_done: |
3b63f34d ML |
212 | #endif |
213 | #ifdef __APPLE__ | |
214 | mach_port_t master; | |
215 | CFMutableDictionaryRef classes; | |
216 | io_iterator_t iter; | |
217 | char *path; | |
218 | io_object_t port; | |
219 | CFTypeRef cf_path; | |
220 | Boolean result; | |
221 | ||
222 | if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) | |
77f262c4 ML |
223 | { |
224 | ret = SP_ERR_FAIL; | |
225 | goto out_done; | |
226 | } | |
3b63f34d ML |
227 | |
228 | if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) | |
77f262c4 ML |
229 | { |
230 | ret = SP_ERR_FAIL; | |
231 | goto out_done; | |
232 | } | |
3b63f34d ML |
233 | |
234 | CFDictionarySetValue(classes, | |
235 | CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes)); | |
236 | ||
0d34b451 | 237 | if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) |
77f262c4 ML |
238 | { |
239 | ret = SP_ERR_FAIL; | |
240 | goto out_done; | |
241 | } | |
3b63f34d ML |
242 | |
243 | if (!(path = malloc(PATH_MAX))) | |
77f262c4 ML |
244 | { |
245 | ret = SP_ERR_MEM; | |
3b63f34d | 246 | goto out_release; |
77f262c4 | 247 | } |
3b63f34d | 248 | |
1ebf4347 | 249 | while ((port = IOIteratorNext(iter))) { |
3b63f34d ML |
250 | cf_path = IORegistryEntryCreateCFProperty(port, |
251 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); | |
252 | if (cf_path) { | |
253 | result = CFStringGetCString(cf_path, | |
254 | path, PATH_MAX, kCFStringEncodingASCII); | |
255 | CFRelease(cf_path); | |
77f262c4 ML |
256 | if (result && !(list = sp_list_append(list, path))) |
257 | { | |
258 | ret = SP_ERR_MEM; | |
259 | IOObjectRelease(port); | |
260 | goto out; | |
261 | } | |
3b63f34d ML |
262 | } |
263 | IOObjectRelease(port); | |
264 | } | |
3b63f34d ML |
265 | out: |
266 | free(path); | |
267 | out_release: | |
268 | IOObjectRelease(iter); | |
77f262c4 | 269 | out_done: |
3b63f34d ML |
270 | #endif |
271 | #ifdef __linux__ | |
272 | struct udev *ud; | |
273 | struct udev_enumerate *ud_enumerate; | |
274 | struct udev_list_entry *ud_list; | |
275 | struct udev_list_entry *ud_entry; | |
276 | const char *path; | |
08fe0bdb | 277 | struct udev_device *ud_dev, *ud_parent; |
3b63f34d | 278 | const char *name; |
4b97c9fc ML |
279 | const char *driver; |
280 | int fd, ioctl_result; | |
281 | struct serial_struct serial_info; | |
3b63f34d ML |
282 | |
283 | ud = udev_new(); | |
284 | ud_enumerate = udev_enumerate_new(ud); | |
285 | udev_enumerate_add_match_subsystem(ud_enumerate, "tty"); | |
286 | udev_enumerate_scan_devices(ud_enumerate); | |
287 | ud_list = udev_enumerate_get_list_entry(ud_enumerate); | |
3b63f34d ML |
288 | udev_list_entry_foreach(ud_entry, ud_list) |
289 | { | |
290 | path = udev_list_entry_get_name(ud_entry); | |
291 | ud_dev = udev_device_new_from_syspath(ud, path); | |
08fe0bdb ML |
292 | /* If there is no parent device, this is a virtual tty. */ |
293 | ud_parent = udev_device_get_parent(ud_dev); | |
294 | if (ud_parent == NULL) | |
295 | { | |
296 | udev_device_unref(ud_dev); | |
297 | continue; | |
298 | } | |
3b63f34d | 299 | name = udev_device_get_devnode(ud_dev); |
4b97c9fc ML |
300 | /* The serial8250 driver has a hardcoded number of ports. |
301 | * The only way to tell which actually exist on a given system | |
302 | * is to try to open them and make an ioctl call. */ | |
303 | driver = udev_device_get_driver(ud_parent); | |
304 | if (driver && !strcmp(driver, "serial8250")) | |
305 | { | |
306 | if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) | |
307 | goto skip; | |
308 | ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info); | |
309 | close(fd); | |
310 | if (ioctl_result != 0) | |
311 | goto skip; | |
312 | if (serial_info.type == PORT_UNKNOWN) | |
313 | goto skip; | |
314 | } | |
5919c913 | 315 | list = sp_list_append(list, name); |
4b97c9fc | 316 | skip: |
3b63f34d ML |
317 | udev_device_unref(ud_dev); |
318 | if (!list) | |
77f262c4 ML |
319 | { |
320 | ret = SP_ERR_MEM; | |
3b63f34d | 321 | goto out; |
77f262c4 | 322 | } |
3b63f34d ML |
323 | } |
324 | out: | |
325 | udev_enumerate_unref(ud_enumerate); | |
326 | udev_unref(ud); | |
3b63f34d | 327 | #endif |
77f262c4 ML |
328 | |
329 | if (ret == SP_OK) | |
330 | { | |
331 | *list_ptr = list; | |
332 | } | |
333 | else | |
334 | { | |
335 | if (list) | |
336 | sp_free_port_list(list); | |
337 | ||
338 | *list_ptr = NULL; | |
339 | } | |
340 | ||
341 | return ret; | |
3b63f34d ML |
342 | } |
343 | ||
d54e9004 | 344 | void sp_free_port_list(struct sp_port **list) |
3b63f34d ML |
345 | { |
346 | unsigned int i; | |
f92f1f0c | 347 | |
3b63f34d | 348 | for (i = 0; list[i]; i++) |
e3b2f7a4 | 349 | sp_free_port(list[i]); |
3b63f34d ML |
350 | free(list); |
351 | } | |
352 | ||
74510d4b ML |
353 | static int sp_validate_port(struct sp_port *port) |
354 | { | |
355 | if (port == NULL) | |
356 | return 0; | |
357 | #ifdef _WIN32 | |
358 | if (port->hdl == INVALID_HANDLE_VALUE) | |
359 | return 0; | |
360 | #else | |
361 | if (port->fd < 0) | |
362 | return 0; | |
363 | #endif | |
364 | return 1; | |
365 | } | |
366 | ||
367 | #define CHECK_PORT() do { if (!sp_validate_port(port)) return SP_ERR_ARG; } while (0) | |
368 | ||
d54e9004 | 369 | int sp_open(struct sp_port *port, int flags) |
74510d4b ML |
370 | { |
371 | if (!port) | |
372 | return SP_ERR_ARG; | |
373 | ||
74510d4b ML |
374 | #ifdef _WIN32 |
375 | DWORD desired_access = 0, flags_and_attributes = 0; | |
99945a1f ML |
376 | char *escaped_port_name; |
377 | ||
378 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
379 | if (!(escaped_port_name = malloc(strlen(port->name + 5)))) | |
380 | return SP_ERR_MEM; | |
381 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
382 | ||
74510d4b ML |
383 | /* Map 'flags' to the OS-specific settings. */ |
384 | desired_access |= GENERIC_READ; | |
385 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; | |
386 | if (flags & SP_MODE_RDWR) | |
387 | desired_access |= GENERIC_WRITE; | |
388 | if (flags & SP_MODE_NONBLOCK) | |
389 | flags_and_attributes |= FILE_FLAG_OVERLAPPED; | |
390 | ||
99945a1f | 391 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, |
74510d4b | 392 | OPEN_EXISTING, flags_and_attributes, 0); |
99945a1f ML |
393 | |
394 | free(escaped_port_name); | |
395 | ||
74510d4b ML |
396 | if (port->hdl == INVALID_HANDLE_VALUE) |
397 | return SP_ERR_FAIL; | |
398 | #else | |
399 | int flags_local = 0; | |
f92f1f0c | 400 | |
74510d4b ML |
401 | /* Map 'flags' to the OS-specific settings. */ |
402 | if (flags & SP_MODE_RDWR) | |
403 | flags_local |= O_RDWR; | |
404 | if (flags & SP_MODE_RDONLY) | |
405 | flags_local |= O_RDONLY; | |
406 | if (flags & SP_MODE_NONBLOCK) | |
407 | flags_local |= O_NONBLOCK; | |
408 | ||
409 | if ((port->fd = open(port->name, flags_local)) < 0) | |
410 | return SP_ERR_FAIL; | |
411 | #endif | |
412 | ||
413 | return SP_OK; | |
414 | } | |
415 | ||
74510d4b ML |
416 | int sp_close(struct sp_port *port) |
417 | { | |
418 | CHECK_PORT(); | |
419 | ||
420 | #ifdef _WIN32 | |
421 | /* Returns non-zero upon success, 0 upon failure. */ | |
422 | if (CloseHandle(port->hdl) == 0) | |
423 | return SP_ERR_FAIL; | |
424 | #else | |
425 | /* Returns 0 upon success, -1 upon failure. */ | |
426 | if (close(port->fd) == -1) | |
427 | return SP_ERR_FAIL; | |
428 | #endif | |
429 | ||
430 | return SP_OK; | |
431 | } | |
432 | ||
74510d4b ML |
433 | int sp_flush(struct sp_port *port) |
434 | { | |
435 | CHECK_PORT(); | |
436 | ||
437 | #ifdef _WIN32 | |
438 | /* Returns non-zero upon success, 0 upon failure. */ | |
439 | if (PurgeComm(port->hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0) | |
440 | return SP_ERR_FAIL; | |
441 | #else | |
442 | /* Returns 0 upon success, -1 upon failure. */ | |
443 | if (tcflush(port->fd, TCIOFLUSH) < 0) | |
444 | return SP_ERR_FAIL; | |
445 | #endif | |
446 | return SP_OK; | |
447 | } | |
448 | ||
74510d4b ML |
449 | int sp_write(struct sp_port *port, const void *buf, size_t count) |
450 | { | |
451 | CHECK_PORT(); | |
452 | ||
453 | if (!buf) | |
454 | return SP_ERR_ARG; | |
455 | ||
456 | #ifdef _WIN32 | |
457 | DWORD written = 0; | |
f92f1f0c | 458 | |
74510d4b ML |
459 | /* Returns non-zero upon success, 0 upon failure. */ |
460 | if (WriteFile(port->hdl, buf, count, &written, NULL) == 0) | |
461 | return SP_ERR_FAIL; | |
462 | return written; | |
463 | #else | |
464 | /* Returns the number of bytes written, or -1 upon failure. */ | |
465 | ssize_t written = write(port->fd, buf, count); | |
f92f1f0c | 466 | |
74510d4b ML |
467 | if (written < 0) |
468 | return SP_ERR_FAIL; | |
469 | else | |
f92f1f0c | 470 | return written; |
74510d4b ML |
471 | #endif |
472 | } | |
473 | ||
74510d4b ML |
474 | int sp_read(struct sp_port *port, void *buf, size_t count) |
475 | { | |
476 | CHECK_PORT(); | |
477 | ||
478 | if (!buf) | |
479 | return SP_ERR_ARG; | |
480 | ||
481 | #ifdef _WIN32 | |
482 | DWORD bytes_read = 0; | |
f92f1f0c | 483 | |
74510d4b ML |
484 | /* Returns non-zero upon success, 0 upon failure. */ |
485 | if (ReadFile(port->hdl, buf, count, &bytes_read, NULL) == 0) | |
486 | return SP_ERR_FAIL; | |
487 | return bytes_read; | |
488 | #else | |
489 | ssize_t bytes_read; | |
f92f1f0c | 490 | |
74510d4b ML |
491 | /* Returns the number of bytes read, or -1 upon failure. */ |
492 | if ((bytes_read = read(port->fd, buf, count)) < 0) | |
493 | return SP_ERR_FAIL; | |
494 | return bytes_read; | |
495 | #endif | |
496 | } | |
497 | ||
8094e4a0 | 498 | static int start_config(struct sp_port *port, struct sp_port_data *data) |
74510d4b ML |
499 | { |
500 | CHECK_PORT(); | |
74510d4b | 501 | #ifdef _WIN32 |
8094e4a0 | 502 | if (!GetCommState(port->hdl, &data->dcb)) |
74510d4b | 503 | return SP_ERR_FAIL; |
8094e4a0 ML |
504 | #else |
505 | if (tcgetattr(port->fd, &data->term) < 0) | |
506 | return SP_ERR_FAIL; | |
507 | #endif | |
508 | return SP_OK; | |
509 | } | |
74510d4b | 510 | |
8094e4a0 ML |
511 | static int set_baudrate(struct sp_port_data *data, int baudrate) |
512 | { | |
513 | #ifdef _WIN32 | |
74510d4b ML |
514 | switch (baudrate) { |
515 | /* | |
516 | * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to | |
517 | * have documented CBR_* macros. | |
518 | */ | |
519 | case 110: | |
8094e4a0 | 520 | data->dcb.BaudRate = CBR_110; |
74510d4b ML |
521 | break; |
522 | case 300: | |
8094e4a0 | 523 | data->dcb.BaudRate = CBR_300; |
74510d4b ML |
524 | break; |
525 | case 600: | |
8094e4a0 | 526 | data->dcb.BaudRate = CBR_600; |
74510d4b ML |
527 | break; |
528 | case 1200: | |
8094e4a0 | 529 | data->dcb.BaudRate = CBR_1200; |
74510d4b ML |
530 | break; |
531 | case 2400: | |
8094e4a0 | 532 | data->dcb.BaudRate = CBR_2400; |
74510d4b ML |
533 | break; |
534 | case 4800: | |
8094e4a0 | 535 | data->dcb.BaudRate = CBR_4800; |
74510d4b ML |
536 | break; |
537 | case 9600: | |
8094e4a0 | 538 | data->dcb.BaudRate = CBR_9600; |
74510d4b ML |
539 | break; |
540 | case 14400: | |
8094e4a0 | 541 | data->dcb.BaudRate = CBR_14400; /* Not available on Unix? */ |
74510d4b ML |
542 | break; |
543 | case 19200: | |
8094e4a0 | 544 | data->dcb.BaudRate = CBR_19200; |
74510d4b ML |
545 | break; |
546 | case 38400: | |
8094e4a0 | 547 | data->dcb.BaudRate = CBR_38400; |
74510d4b ML |
548 | break; |
549 | case 57600: | |
8094e4a0 | 550 | data->dcb.BaudRate = CBR_57600; |
74510d4b ML |
551 | break; |
552 | case 115200: | |
8094e4a0 | 553 | data->dcb.BaudRate = CBR_115200; |
74510d4b ML |
554 | break; |
555 | case 128000: | |
8094e4a0 | 556 | data->dcb.BaudRate = CBR_128000; /* Not available on Unix? */ |
74510d4b ML |
557 | break; |
558 | case 256000: | |
8094e4a0 | 559 | data->dcb.BaudRate = CBR_256000; /* Not available on Unix? */ |
74510d4b ML |
560 | break; |
561 | default: | |
562 | return SP_ERR_ARG; | |
563 | } | |
74510d4b | 564 | #else |
cbf628c7 | 565 | speed_t baud; |
74510d4b ML |
566 | switch (baudrate) { |
567 | case 50: | |
cbf628c7 | 568 | baud = B50; |
74510d4b ML |
569 | break; |
570 | case 75: | |
cbf628c7 | 571 | baud = B75; |
74510d4b ML |
572 | break; |
573 | case 110: | |
cbf628c7 | 574 | baud = B110; |
74510d4b ML |
575 | break; |
576 | case 134: | |
cbf628c7 | 577 | baud = B134; |
74510d4b ML |
578 | break; |
579 | case 150: | |
cbf628c7 | 580 | baud = B150; |
74510d4b ML |
581 | break; |
582 | case 200: | |
cbf628c7 | 583 | baud = B200; |
74510d4b ML |
584 | break; |
585 | case 300: | |
cbf628c7 | 586 | baud = B300; |
74510d4b ML |
587 | break; |
588 | case 600: | |
cbf628c7 | 589 | baud = B600; |
74510d4b ML |
590 | break; |
591 | case 1200: | |
cbf628c7 | 592 | baud = B1200; |
74510d4b ML |
593 | break; |
594 | case 1800: | |
cbf628c7 | 595 | baud = B1800; |
74510d4b ML |
596 | break; |
597 | case 2400: | |
cbf628c7 | 598 | baud = B2400; |
74510d4b ML |
599 | break; |
600 | case 4800: | |
cbf628c7 | 601 | baud = B4800; |
74510d4b ML |
602 | break; |
603 | case 9600: | |
cbf628c7 | 604 | baud = B9600; |
74510d4b ML |
605 | break; |
606 | case 19200: | |
cbf628c7 | 607 | baud = B19200; |
74510d4b ML |
608 | break; |
609 | case 38400: | |
cbf628c7 | 610 | baud = B38400; |
74510d4b ML |
611 | break; |
612 | case 57600: | |
cbf628c7 | 613 | baud = B57600; |
74510d4b ML |
614 | break; |
615 | case 115200: | |
cbf628c7 | 616 | baud = B115200; |
74510d4b ML |
617 | break; |
618 | case 230400: | |
cbf628c7 | 619 | baud = B230400; |
74510d4b ML |
620 | break; |
621 | #if !defined(__APPLE__) && !defined(__OpenBSD__) | |
622 | case 460800: | |
cbf628c7 | 623 | baud = B460800; |
74510d4b ML |
624 | break; |
625 | #endif | |
626 | default: | |
627 | return SP_ERR_ARG; | |
628 | } | |
cbf628c7 ML |
629 | |
630 | if (cfsetospeed(&data->term, baud) < 0) | |
631 | return SP_ERR_FAIL; | |
632 | ||
633 | if (cfsetispeed(&data->term, baud) < 0) | |
634 | return SP_ERR_FAIL; | |
635 | ||
8094e4a0 ML |
636 | #endif |
637 | return SP_OK; | |
638 | } | |
74510d4b | 639 | |
8094e4a0 ML |
640 | static int set_bits(struct sp_port_data *data, int bits) |
641 | { | |
642 | #ifdef _WIN32 | |
643 | data->dcb.ByteSize = bits; | |
644 | #else | |
645 | data->term.c_cflag &= ~CSIZE; | |
74510d4b ML |
646 | switch (bits) { |
647 | case 8: | |
8094e4a0 | 648 | data->term.c_cflag |= CS8; |
74510d4b ML |
649 | break; |
650 | case 7: | |
8094e4a0 | 651 | data->term.c_cflag |= CS7; |
74510d4b | 652 | break; |
d1d566f2 | 653 | case 6: |
8094e4a0 | 654 | data->term.c_cflag |= CS6; |
d1d566f2 | 655 | break; |
74510d4b ML |
656 | default: |
657 | return SP_ERR_ARG; | |
658 | } | |
8094e4a0 ML |
659 | #endif |
660 | return SP_OK; | |
661 | } | |
74510d4b | 662 | |
8094e4a0 ML |
663 | static int set_parity(struct sp_port_data *data, int parity) |
664 | { | |
665 | #ifdef _WIN32 | |
666 | switch (parity) { | |
667 | /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */ | |
668 | case SP_PARITY_NONE: | |
669 | data->dcb.Parity = NOPARITY; | |
670 | break; | |
671 | case SP_PARITY_EVEN: | |
672 | data->dcb.Parity = EVENPARITY; | |
673 | break; | |
674 | case SP_PARITY_ODD: | |
675 | data->dcb.Parity = ODDPARITY; | |
676 | break; | |
677 | default: | |
678 | return SP_ERR_ARG; | |
679 | } | |
680 | #else | |
681 | data->term.c_iflag &= ~IGNPAR; | |
682 | data->term.c_cflag &= ~(PARENB | PARODD); | |
683 | switch (parity) { | |
684 | case SP_PARITY_NONE: | |
685 | data->term.c_iflag |= IGNPAR; | |
686 | break; | |
687 | case SP_PARITY_EVEN: | |
688 | data->term.c_cflag |= PARENB; | |
689 | break; | |
690 | case SP_PARITY_ODD: | |
691 | data->term.c_cflag |= PARENB | PARODD; | |
692 | break; | |
693 | default: | |
694 | return SP_ERR_ARG; | |
695 | } | |
696 | #endif | |
697 | return SP_OK; | |
698 | } | |
699 | ||
700 | static int set_stopbits(struct sp_port_data *data, int stopbits) | |
701 | { | |
702 | #ifdef _WIN32 | |
74510d4b | 703 | switch (stopbits) { |
8094e4a0 | 704 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ |
74510d4b | 705 | case 1: |
8094e4a0 | 706 | data->dcb.StopBits = ONESTOPBIT; |
74510d4b ML |
707 | break; |
708 | case 2: | |
8094e4a0 | 709 | data->dcb.StopBits = TWOSTOPBITS; |
74510d4b ML |
710 | break; |
711 | default: | |
712 | return SP_ERR_ARG; | |
713 | } | |
8094e4a0 ML |
714 | #else |
715 | data->term.c_cflag &= ~CSTOPB; | |
716 | switch (stopbits) { | |
74510d4b | 717 | case 1: |
8094e4a0 | 718 | data->term.c_cflag &= ~CSTOPB; |
74510d4b ML |
719 | break; |
720 | case 2: | |
8094e4a0 | 721 | data->term.c_cflag |= CSTOPB; |
74510d4b ML |
722 | break; |
723 | default: | |
724 | return SP_ERR_ARG; | |
725 | } | |
8094e4a0 ML |
726 | #endif |
727 | return SP_OK; | |
728 | } | |
74510d4b | 729 | |
8094e4a0 ML |
730 | static int set_flowcontrol(struct sp_port_data *data, int flowcontrol) |
731 | { | |
732 | #ifndef _WIN32 | |
733 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
734 | data->term.c_cflag &= ~CRTSCTS; | |
735 | switch (flowcontrol) { | |
736 | case 0: | |
737 | /* No flow control. */ | |
74510d4b | 738 | break; |
8094e4a0 ML |
739 | case 1: |
740 | data->term.c_cflag |= CRTSCTS; | |
74510d4b | 741 | break; |
8094e4a0 ML |
742 | case 2: |
743 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
74510d4b ML |
744 | break; |
745 | default: | |
746 | return SP_ERR_ARG; | |
747 | } | |
8094e4a0 ML |
748 | #endif |
749 | return SP_OK; | |
750 | } | |
751 | ||
752 | static int set_rts(struct sp_port_data *data, int rts) | |
753 | { | |
754 | #ifdef _WIN32 | |
a46f0960 ML |
755 | if (rts) |
756 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
757 | else | |
758 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
8094e4a0 ML |
759 | #else |
760 | data->rts = rts; | |
761 | #endif | |
762 | return SP_OK; | |
763 | } | |
764 | ||
765 | static int set_dtr(struct sp_port_data *data, int dtr) | |
766 | { | |
767 | #ifdef _WIN32 | |
a46f0960 ML |
768 | if (dtr) |
769 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
770 | else | |
771 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
8094e4a0 ML |
772 | #else |
773 | data->dtr = dtr; | |
774 | #endif | |
775 | return SP_OK; | |
776 | } | |
777 | ||
778 | static int apply_config(struct sp_port *port, struct sp_port_data *data) | |
779 | { | |
780 | #ifdef _WIN32 | |
781 | if (!SetCommState(port->hdl, &data->dcb)) | |
782 | return SP_ERR_FAIL; | |
783 | #else | |
784 | int controlbits; | |
74510d4b ML |
785 | |
786 | /* Turn off all serial port cooking. */ | |
8094e4a0 ML |
787 | data->term.c_iflag &= ~(ISTRIP | INLCR | ICRNL); |
788 | data->term.c_oflag &= ~(ONLCR | OCRNL | ONOCR); | |
74510d4b | 789 | #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) |
8094e4a0 | 790 | data->term.c_oflag &= ~OFILL; |
74510d4b | 791 | #endif |
74510d4b | 792 | /* Disable canonical mode, and don't echo input characters. */ |
8094e4a0 | 793 | data->term.c_lflag &= ~(ICANON | ECHO); |
74510d4b | 794 | |
8683177b | 795 | /* Ignore modem status lines; enable receiver */ |
8094e4a0 | 796 | data->term.c_cflag |= (CLOCAL | CREAD); |
8683177b | 797 | |
74510d4b | 798 | /* Write the configured settings. */ |
8094e4a0 | 799 | if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0) |
74510d4b ML |
800 | return SP_ERR_FAIL; |
801 | ||
8094e4a0 | 802 | if (data->rts != -1) { |
74510d4b | 803 | controlbits = TIOCM_RTS; |
8094e4a0 | 804 | if (ioctl(port->fd, data->rts ? TIOCMBIS : TIOCMBIC, |
74510d4b ML |
805 | &controlbits) < 0) |
806 | return SP_ERR_FAIL; | |
807 | } | |
808 | ||
8094e4a0 | 809 | if (data->dtr != -1) { |
74510d4b | 810 | controlbits = TIOCM_DTR; |
8094e4a0 | 811 | if (ioctl(port->fd, data->dtr ? TIOCMBIS : TIOCMBIC, |
74510d4b ML |
812 | &controlbits) < 0) |
813 | return SP_ERR_FAIL; | |
814 | } | |
815 | #endif | |
8094e4a0 ML |
816 | return SP_OK; |
817 | } | |
818 | ||
819 | #define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0) | |
a46f0960 | 820 | #define TRY_SET(x) do { if (config->x >= 0) TRY(set_##x(&data, config->x)); } while (0) |
8094e4a0 | 821 | |
d1202734 | 822 | int sp_set_config(struct sp_port *port, struct sp_port_config *config) |
8094e4a0 ML |
823 | { |
824 | struct sp_port_data data; | |
825 | ||
826 | TRY(start_config(port, &data)); | |
a46f0960 ML |
827 | TRY_SET(baudrate); |
828 | TRY_SET(bits); | |
829 | TRY_SET(parity); | |
830 | TRY_SET(stopbits); | |
831 | TRY_SET(flowcontrol); | |
832 | TRY_SET(rts); | |
833 | TRY_SET(dtr); | |
8094e4a0 | 834 | TRY(apply_config(port, &data)); |
74510d4b ML |
835 | |
836 | return SP_OK; | |
837 | } | |
838 | ||
74510d4b ML |
839 | int sp_last_error_code(void) |
840 | { | |
841 | #ifdef _WIN32 | |
842 | return GetLastError(); | |
843 | #else | |
844 | return errno; | |
845 | #endif | |
846 | } | |
847 | ||
74510d4b ML |
848 | char *sp_last_error_message(void) |
849 | { | |
850 | #ifdef _WIN32 | |
851 | LPVOID message; | |
852 | DWORD error = GetLastError(); | |
853 | ||
854 | FormatMessage( | |
855 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
856 | FORMAT_MESSAGE_FROM_SYSTEM | | |
857 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
858 | NULL, | |
859 | error, | |
860 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
861 | (LPTSTR) &message, | |
862 | 0, NULL ); | |
863 | ||
864 | return message; | |
865 | #else | |
866 | return strerror(errno); | |
867 | #endif | |
868 | } | |
869 | ||
74510d4b ML |
870 | void sp_free_error_message(char *message) |
871 | { | |
872 | #ifdef _WIN32 | |
873 | LocalFree(message); | |
64eec30d ML |
874 | #else |
875 | (void)message; | |
74510d4b ML |
876 | #endif |
877 | } |