]>
Commit | Line | Data |
---|---|---|
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; | |
824dcb45 | 54 | int controlbits; |
8094e4a0 | 55 | int rts; |
d514a26f | 56 | int cts; |
8094e4a0 | 57 | int dtr; |
d514a26f | 58 | int dsr; |
8094e4a0 ML |
59 | #endif |
60 | }; | |
61 | ||
80186526 ML |
62 | /* Helper functions for configuring ports. */ |
63 | static int start_config(struct sp_port *port, struct sp_port_data *data); | |
64 | static int set_baudrate(struct sp_port_data *data, int baudrate); | |
65 | static int set_bits(struct sp_port_data *data, int bits); | |
66 | static int set_parity(struct sp_port_data *data, int parity); | |
67 | static int set_stopbits(struct sp_port_data *data, int stopbits); | |
68 | static int set_rts(struct sp_port_data *data, int rts); | |
69 | static int set_cts(struct sp_port_data *data, int cts); | |
70 | static int set_dtr(struct sp_port_data *data, int dtr); | |
71 | static int set_dsr(struct sp_port_data *data, int dsr); | |
72 | static int set_xon_xoff(struct sp_port_data *data, int xon_xoff); | |
73 | static int apply_config(struct sp_port *port, struct sp_port_data *data); | |
74 | ||
77f262c4 | 75 | int sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) |
d54e9004 ML |
76 | { |
77 | struct sp_port *port; | |
5919c913 | 78 | int len; |
d54e9004 | 79 | |
32b5ac05 ML |
80 | if (!port_ptr) |
81 | return SP_ERR_ARG; | |
82 | ||
77f262c4 ML |
83 | *port_ptr = NULL; |
84 | ||
d4babed2 | 85 | if (!portname) |
77f262c4 | 86 | return SP_ERR_ARG; |
d4babed2 | 87 | |
d54e9004 | 88 | if (!(port = malloc(sizeof(struct sp_port)))) |
77f262c4 | 89 | return SP_ERR_MEM; |
d54e9004 | 90 | |
5919c913 ML |
91 | len = strlen(portname) + 1; |
92 | ||
d54e9004 ML |
93 | if (!(port->name = malloc(len))) |
94 | { | |
95 | free(port); | |
77f262c4 | 96 | return SP_ERR_MEM; |
d54e9004 ML |
97 | } |
98 | ||
99 | memcpy(port->name, portname, len); | |
100 | ||
77f262c4 ML |
101 | *port_ptr = port; |
102 | ||
103 | return SP_OK; | |
d54e9004 ML |
104 | } |
105 | ||
32b5ac05 ML |
106 | int sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr) |
107 | { | |
108 | if (!copy_ptr) | |
109 | return SP_ERR_ARG; | |
110 | ||
111 | *copy_ptr = NULL; | |
112 | ||
113 | if (!port || !port->name) | |
114 | return SP_ERR_ARG; | |
115 | ||
116 | return sp_get_port_by_name(port->name, copy_ptr); | |
117 | } | |
118 | ||
e3b2f7a4 ML |
119 | void sp_free_port(struct sp_port *port) |
120 | { | |
121 | if (!port) | |
122 | return; | |
123 | ||
124 | if (port->name) | |
125 | free(port->name); | |
126 | ||
127 | free(port); | |
128 | } | |
129 | ||
5919c913 | 130 | static struct sp_port **sp_list_append(struct sp_port **list, const char *portname) |
3b63f34d ML |
131 | { |
132 | void *tmp; | |
133 | unsigned int count; | |
f92f1f0c | 134 | |
3b63f34d | 135 | for (count = 0; list[count]; count++); |
d54e9004 | 136 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) |
3b63f34d ML |
137 | goto fail; |
138 | list = tmp; | |
77f262c4 | 139 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) |
3b63f34d | 140 | goto fail; |
db2794ce | 141 | list[count + 1] = NULL; |
3b63f34d | 142 | return list; |
f92f1f0c | 143 | |
3b63f34d ML |
144 | fail: |
145 | sp_free_port_list(list); | |
146 | return NULL; | |
147 | } | |
148 | ||
77f262c4 | 149 | int sp_list_ports(struct sp_port ***list_ptr) |
3b63f34d | 150 | { |
d54e9004 | 151 | struct sp_port **list; |
77f262c4 | 152 | int ret = SP_OK; |
24c1a4bb | 153 | |
d54e9004 | 154 | if (!(list = malloc(sizeof(struct sp_port **)))) |
f92f1f0c | 155 | return SP_ERR_MEM; |
24c1a4bb ML |
156 | |
157 | list[0] = NULL; | |
3b63f34d ML |
158 | |
159 | #ifdef _WIN32 | |
160 | HKEY key; | |
bdfb5b8c ML |
161 | TCHAR *value, *data; |
162 | DWORD max_value_len, max_data_size, max_data_len; | |
163 | DWORD value_len, data_size, data_len; | |
3b63f34d | 164 | DWORD type, index = 0; |
8b532d9c ML |
165 | char *name; |
166 | int name_len; | |
3b63f34d ML |
167 | |
168 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
169 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) | |
77f262c4 ML |
170 | { |
171 | ret = SP_ERR_FAIL; | |
172 | goto out_done; | |
173 | } | |
3b63f34d | 174 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
bdfb5b8c | 175 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) |
77f262c4 ML |
176 | { |
177 | ret = SP_ERR_FAIL; | |
3b63f34d | 178 | goto out_close; |
77f262c4 | 179 | } |
3b63f34d | 180 | max_data_len = max_data_size / sizeof(TCHAR); |
bdfb5b8c | 181 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) |
77f262c4 ML |
182 | { |
183 | ret = SP_ERR_MEM; | |
3b63f34d | 184 | goto out_close; |
77f262c4 | 185 | } |
3b63f34d | 186 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) |
77f262c4 ML |
187 | { |
188 | ret = SP_ERR_MEM; | |
bdfb5b8c | 189 | goto out_free_value; |
77f262c4 | 190 | } |
3b63f34d | 191 | while ( |
d9573bad | 192 | value_len = max_value_len + 1, |
3b63f34d | 193 | data_size = max_data_size, |
bdfb5b8c | 194 | RegEnumValue(key, index, value, &value_len, |
3b63f34d ML |
195 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) |
196 | { | |
197 | data_len = data_size / sizeof(TCHAR); | |
198 | data[data_len] = '\0'; | |
8b532d9c ML |
199 | #ifdef UNICODE |
200 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL) | |
201 | #else | |
202 | name_len = data_len + 1; | |
203 | #endif | |
204 | if (!(name = malloc(name_len))) | |
77f262c4 ML |
205 | { |
206 | ret = SP_ERR_MEM; | |
8b532d9c | 207 | goto out; |
77f262c4 | 208 | } |
8b532d9c ML |
209 | #ifdef UNICODE |
210 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); | |
211 | #else | |
212 | strcpy(name, data); | |
213 | #endif | |
77f262c4 ML |
214 | if (type == REG_SZ && !(list = sp_list_append(list, name))) |
215 | { | |
216 | ret = SP_ERR_MEM; | |
217 | goto out; | |
218 | } | |
3b63f34d ML |
219 | index++; |
220 | } | |
221 | out: | |
222 | free(data); | |
bdfb5b8c ML |
223 | out_free_value: |
224 | free(value); | |
3b63f34d ML |
225 | out_close: |
226 | RegCloseKey(key); | |
77f262c4 | 227 | out_done: |
3b63f34d ML |
228 | #endif |
229 | #ifdef __APPLE__ | |
230 | mach_port_t master; | |
231 | CFMutableDictionaryRef classes; | |
232 | io_iterator_t iter; | |
233 | char *path; | |
234 | io_object_t port; | |
235 | CFTypeRef cf_path; | |
236 | Boolean result; | |
237 | ||
238 | if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) | |
77f262c4 ML |
239 | { |
240 | ret = SP_ERR_FAIL; | |
241 | goto out_done; | |
242 | } | |
3b63f34d ML |
243 | |
244 | if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) | |
77f262c4 ML |
245 | { |
246 | ret = SP_ERR_FAIL; | |
247 | goto out_done; | |
248 | } | |
3b63f34d ML |
249 | |
250 | CFDictionarySetValue(classes, | |
251 | CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes)); | |
252 | ||
0d34b451 | 253 | if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) |
77f262c4 ML |
254 | { |
255 | ret = SP_ERR_FAIL; | |
256 | goto out_done; | |
257 | } | |
3b63f34d ML |
258 | |
259 | if (!(path = malloc(PATH_MAX))) | |
77f262c4 ML |
260 | { |
261 | ret = SP_ERR_MEM; | |
3b63f34d | 262 | goto out_release; |
77f262c4 | 263 | } |
3b63f34d | 264 | |
1ebf4347 | 265 | while ((port = IOIteratorNext(iter))) { |
3b63f34d ML |
266 | cf_path = IORegistryEntryCreateCFProperty(port, |
267 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); | |
268 | if (cf_path) { | |
269 | result = CFStringGetCString(cf_path, | |
270 | path, PATH_MAX, kCFStringEncodingASCII); | |
271 | CFRelease(cf_path); | |
77f262c4 ML |
272 | if (result && !(list = sp_list_append(list, path))) |
273 | { | |
274 | ret = SP_ERR_MEM; | |
275 | IOObjectRelease(port); | |
276 | goto out; | |
277 | } | |
3b63f34d ML |
278 | } |
279 | IOObjectRelease(port); | |
280 | } | |
3b63f34d ML |
281 | out: |
282 | free(path); | |
283 | out_release: | |
284 | IOObjectRelease(iter); | |
77f262c4 | 285 | out_done: |
3b63f34d ML |
286 | #endif |
287 | #ifdef __linux__ | |
288 | struct udev *ud; | |
289 | struct udev_enumerate *ud_enumerate; | |
290 | struct udev_list_entry *ud_list; | |
291 | struct udev_list_entry *ud_entry; | |
292 | const char *path; | |
08fe0bdb | 293 | struct udev_device *ud_dev, *ud_parent; |
3b63f34d | 294 | const char *name; |
4b97c9fc ML |
295 | const char *driver; |
296 | int fd, ioctl_result; | |
297 | struct serial_struct serial_info; | |
3b63f34d ML |
298 | |
299 | ud = udev_new(); | |
300 | ud_enumerate = udev_enumerate_new(ud); | |
301 | udev_enumerate_add_match_subsystem(ud_enumerate, "tty"); | |
302 | udev_enumerate_scan_devices(ud_enumerate); | |
303 | ud_list = udev_enumerate_get_list_entry(ud_enumerate); | |
3b63f34d ML |
304 | udev_list_entry_foreach(ud_entry, ud_list) |
305 | { | |
306 | path = udev_list_entry_get_name(ud_entry); | |
307 | ud_dev = udev_device_new_from_syspath(ud, path); | |
08fe0bdb ML |
308 | /* If there is no parent device, this is a virtual tty. */ |
309 | ud_parent = udev_device_get_parent(ud_dev); | |
310 | if (ud_parent == NULL) | |
311 | { | |
312 | udev_device_unref(ud_dev); | |
313 | continue; | |
314 | } | |
3b63f34d | 315 | name = udev_device_get_devnode(ud_dev); |
4b97c9fc ML |
316 | /* The serial8250 driver has a hardcoded number of ports. |
317 | * The only way to tell which actually exist on a given system | |
318 | * is to try to open them and make an ioctl call. */ | |
319 | driver = udev_device_get_driver(ud_parent); | |
320 | if (driver && !strcmp(driver, "serial8250")) | |
321 | { | |
322 | if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) | |
323 | goto skip; | |
324 | ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info); | |
325 | close(fd); | |
326 | if (ioctl_result != 0) | |
327 | goto skip; | |
328 | if (serial_info.type == PORT_UNKNOWN) | |
329 | goto skip; | |
330 | } | |
5919c913 | 331 | list = sp_list_append(list, name); |
4b97c9fc | 332 | skip: |
3b63f34d ML |
333 | udev_device_unref(ud_dev); |
334 | if (!list) | |
77f262c4 ML |
335 | { |
336 | ret = SP_ERR_MEM; | |
3b63f34d | 337 | goto out; |
77f262c4 | 338 | } |
3b63f34d ML |
339 | } |
340 | out: | |
341 | udev_enumerate_unref(ud_enumerate); | |
342 | udev_unref(ud); | |
3b63f34d | 343 | #endif |
77f262c4 ML |
344 | |
345 | if (ret == SP_OK) | |
346 | { | |
347 | *list_ptr = list; | |
348 | } | |
349 | else | |
350 | { | |
351 | if (list) | |
352 | sp_free_port_list(list); | |
353 | ||
354 | *list_ptr = NULL; | |
355 | } | |
356 | ||
357 | return ret; | |
3b63f34d ML |
358 | } |
359 | ||
d54e9004 | 360 | void sp_free_port_list(struct sp_port **list) |
3b63f34d ML |
361 | { |
362 | unsigned int i; | |
f92f1f0c | 363 | |
3b63f34d | 364 | for (i = 0; list[i]; i++) |
e3b2f7a4 | 365 | sp_free_port(list[i]); |
3b63f34d ML |
366 | free(list); |
367 | } | |
368 | ||
74510d4b ML |
369 | static int sp_validate_port(struct sp_port *port) |
370 | { | |
371 | if (port == NULL) | |
372 | return 0; | |
373 | #ifdef _WIN32 | |
374 | if (port->hdl == INVALID_HANDLE_VALUE) | |
375 | return 0; | |
376 | #else | |
377 | if (port->fd < 0) | |
378 | return 0; | |
379 | #endif | |
380 | return 1; | |
381 | } | |
382 | ||
383 | #define CHECK_PORT() do { if (!sp_validate_port(port)) return SP_ERR_ARG; } while (0) | |
384 | ||
d54e9004 | 385 | int sp_open(struct sp_port *port, int flags) |
74510d4b ML |
386 | { |
387 | if (!port) | |
388 | return SP_ERR_ARG; | |
389 | ||
74510d4b ML |
390 | #ifdef _WIN32 |
391 | DWORD desired_access = 0, flags_and_attributes = 0; | |
99945a1f ML |
392 | char *escaped_port_name; |
393 | ||
394 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
395 | if (!(escaped_port_name = malloc(strlen(port->name + 5)))) | |
396 | return SP_ERR_MEM; | |
397 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
398 | ||
74510d4b ML |
399 | /* Map 'flags' to the OS-specific settings. */ |
400 | desired_access |= GENERIC_READ; | |
401 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; | |
402 | if (flags & SP_MODE_RDWR) | |
403 | desired_access |= GENERIC_WRITE; | |
404 | if (flags & SP_MODE_NONBLOCK) | |
405 | flags_and_attributes |= FILE_FLAG_OVERLAPPED; | |
406 | ||
99945a1f | 407 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, |
74510d4b | 408 | OPEN_EXISTING, flags_and_attributes, 0); |
99945a1f ML |
409 | |
410 | free(escaped_port_name); | |
411 | ||
74510d4b ML |
412 | if (port->hdl == INVALID_HANDLE_VALUE) |
413 | return SP_ERR_FAIL; | |
414 | #else | |
415 | int flags_local = 0; | |
9cb98459 | 416 | struct sp_port_data data; |
f92f1f0c | 417 | |
74510d4b ML |
418 | /* Map 'flags' to the OS-specific settings. */ |
419 | if (flags & SP_MODE_RDWR) | |
420 | flags_local |= O_RDWR; | |
421 | if (flags & SP_MODE_RDONLY) | |
422 | flags_local |= O_RDONLY; | |
423 | if (flags & SP_MODE_NONBLOCK) | |
424 | flags_local |= O_NONBLOCK; | |
425 | ||
426 | if ((port->fd = open(port->name, flags_local)) < 0) | |
427 | return SP_ERR_FAIL; | |
9cb98459 ML |
428 | |
429 | start_config(port, &data); | |
430 | ||
431 | /* Turn off all serial port cooking. */ | |
432 | data.term.c_iflag &= ~(ISTRIP | INLCR | ICRNL); | |
433 | data.term.c_oflag &= ~(ONLCR | OCRNL | ONOCR); | |
434 | #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) | |
435 | data.term.c_oflag &= ~OFILL; | |
436 | #endif | |
437 | /* Disable canonical mode, and don't echo input characters. */ | |
438 | data.term.c_lflag &= ~(ICANON | ECHO); | |
439 | ||
440 | /* Ignore modem status lines; enable receiver */ | |
441 | data.term.c_cflag |= (CLOCAL | CREAD); | |
442 | ||
443 | apply_config(port, &data); | |
74510d4b ML |
444 | #endif |
445 | ||
446 | return SP_OK; | |
447 | } | |
448 | ||
74510d4b ML |
449 | int sp_close(struct sp_port *port) |
450 | { | |
451 | CHECK_PORT(); | |
452 | ||
453 | #ifdef _WIN32 | |
454 | /* Returns non-zero upon success, 0 upon failure. */ | |
455 | if (CloseHandle(port->hdl) == 0) | |
456 | return SP_ERR_FAIL; | |
457 | #else | |
458 | /* Returns 0 upon success, -1 upon failure. */ | |
459 | if (close(port->fd) == -1) | |
460 | return SP_ERR_FAIL; | |
461 | #endif | |
462 | ||
463 | return SP_OK; | |
464 | } | |
465 | ||
74510d4b ML |
466 | int sp_flush(struct sp_port *port) |
467 | { | |
468 | CHECK_PORT(); | |
469 | ||
470 | #ifdef _WIN32 | |
471 | /* Returns non-zero upon success, 0 upon failure. */ | |
472 | if (PurgeComm(port->hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0) | |
473 | return SP_ERR_FAIL; | |
474 | #else | |
475 | /* Returns 0 upon success, -1 upon failure. */ | |
476 | if (tcflush(port->fd, TCIOFLUSH) < 0) | |
477 | return SP_ERR_FAIL; | |
478 | #endif | |
479 | return SP_OK; | |
480 | } | |
481 | ||
74510d4b ML |
482 | int sp_write(struct sp_port *port, const void *buf, size_t count) |
483 | { | |
484 | CHECK_PORT(); | |
485 | ||
486 | if (!buf) | |
487 | return SP_ERR_ARG; | |
488 | ||
489 | #ifdef _WIN32 | |
490 | DWORD written = 0; | |
f92f1f0c | 491 | |
74510d4b ML |
492 | /* Returns non-zero upon success, 0 upon failure. */ |
493 | if (WriteFile(port->hdl, buf, count, &written, NULL) == 0) | |
494 | return SP_ERR_FAIL; | |
495 | return written; | |
496 | #else | |
497 | /* Returns the number of bytes written, or -1 upon failure. */ | |
498 | ssize_t written = write(port->fd, buf, count); | |
f92f1f0c | 499 | |
74510d4b ML |
500 | if (written < 0) |
501 | return SP_ERR_FAIL; | |
502 | else | |
f92f1f0c | 503 | return written; |
74510d4b ML |
504 | #endif |
505 | } | |
506 | ||
74510d4b ML |
507 | int sp_read(struct sp_port *port, void *buf, size_t count) |
508 | { | |
509 | CHECK_PORT(); | |
510 | ||
511 | if (!buf) | |
512 | return SP_ERR_ARG; | |
513 | ||
514 | #ifdef _WIN32 | |
515 | DWORD bytes_read = 0; | |
f92f1f0c | 516 | |
74510d4b ML |
517 | /* Returns non-zero upon success, 0 upon failure. */ |
518 | if (ReadFile(port->hdl, buf, count, &bytes_read, NULL) == 0) | |
519 | return SP_ERR_FAIL; | |
520 | return bytes_read; | |
521 | #else | |
522 | ssize_t bytes_read; | |
f92f1f0c | 523 | |
74510d4b ML |
524 | /* Returns the number of bytes read, or -1 upon failure. */ |
525 | if ((bytes_read = read(port->fd, buf, count)) < 0) | |
526 | return SP_ERR_FAIL; | |
527 | return bytes_read; | |
528 | #endif | |
529 | } | |
530 | ||
8094e4a0 | 531 | static int start_config(struct sp_port *port, struct sp_port_data *data) |
74510d4b ML |
532 | { |
533 | CHECK_PORT(); | |
74510d4b | 534 | #ifdef _WIN32 |
8094e4a0 | 535 | if (!GetCommState(port->hdl, &data->dcb)) |
74510d4b | 536 | return SP_ERR_FAIL; |
8094e4a0 ML |
537 | #else |
538 | if (tcgetattr(port->fd, &data->term) < 0) | |
539 | return SP_ERR_FAIL; | |
9f90173c | 540 | |
824dcb45 | 541 | if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0) |
9f90173c ML |
542 | return SP_ERR_FAIL; |
543 | ||
544 | if (data->term.c_cflag & CRTSCTS) { | |
545 | data->rts = SP_RTS_FLOW_CONTROL; | |
546 | data->cts = SP_CTS_FLOW_CONTROL; | |
547 | } else { | |
824dcb45 | 548 | data->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; |
9f90173c ML |
549 | data->cts = SP_CTS_IGNORE; |
550 | } | |
551 | ||
824dcb45 | 552 | data->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; |
9f90173c | 553 | data->dsr = SP_DSR_IGNORE; |
8094e4a0 ML |
554 | #endif |
555 | return SP_OK; | |
556 | } | |
74510d4b | 557 | |
8094e4a0 ML |
558 | static int set_baudrate(struct sp_port_data *data, int baudrate) |
559 | { | |
560 | #ifdef _WIN32 | |
74510d4b ML |
561 | switch (baudrate) { |
562 | /* | |
563 | * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to | |
564 | * have documented CBR_* macros. | |
565 | */ | |
566 | case 110: | |
8094e4a0 | 567 | data->dcb.BaudRate = CBR_110; |
74510d4b ML |
568 | break; |
569 | case 300: | |
8094e4a0 | 570 | data->dcb.BaudRate = CBR_300; |
74510d4b ML |
571 | break; |
572 | case 600: | |
8094e4a0 | 573 | data->dcb.BaudRate = CBR_600; |
74510d4b ML |
574 | break; |
575 | case 1200: | |
8094e4a0 | 576 | data->dcb.BaudRate = CBR_1200; |
74510d4b ML |
577 | break; |
578 | case 2400: | |
8094e4a0 | 579 | data->dcb.BaudRate = CBR_2400; |
74510d4b ML |
580 | break; |
581 | case 4800: | |
8094e4a0 | 582 | data->dcb.BaudRate = CBR_4800; |
74510d4b ML |
583 | break; |
584 | case 9600: | |
8094e4a0 | 585 | data->dcb.BaudRate = CBR_9600; |
74510d4b ML |
586 | break; |
587 | case 14400: | |
8094e4a0 | 588 | data->dcb.BaudRate = CBR_14400; /* Not available on Unix? */ |
74510d4b ML |
589 | break; |
590 | case 19200: | |
8094e4a0 | 591 | data->dcb.BaudRate = CBR_19200; |
74510d4b ML |
592 | break; |
593 | case 38400: | |
8094e4a0 | 594 | data->dcb.BaudRate = CBR_38400; |
74510d4b ML |
595 | break; |
596 | case 57600: | |
8094e4a0 | 597 | data->dcb.BaudRate = CBR_57600; |
74510d4b ML |
598 | break; |
599 | case 115200: | |
8094e4a0 | 600 | data->dcb.BaudRate = CBR_115200; |
74510d4b ML |
601 | break; |
602 | case 128000: | |
8094e4a0 | 603 | data->dcb.BaudRate = CBR_128000; /* Not available on Unix? */ |
74510d4b ML |
604 | break; |
605 | case 256000: | |
8094e4a0 | 606 | data->dcb.BaudRate = CBR_256000; /* Not available on Unix? */ |
74510d4b ML |
607 | break; |
608 | default: | |
609 | return SP_ERR_ARG; | |
610 | } | |
74510d4b | 611 | #else |
cbf628c7 | 612 | speed_t baud; |
74510d4b ML |
613 | switch (baudrate) { |
614 | case 50: | |
cbf628c7 | 615 | baud = B50; |
74510d4b ML |
616 | break; |
617 | case 75: | |
cbf628c7 | 618 | baud = B75; |
74510d4b ML |
619 | break; |
620 | case 110: | |
cbf628c7 | 621 | baud = B110; |
74510d4b ML |
622 | break; |
623 | case 134: | |
cbf628c7 | 624 | baud = B134; |
74510d4b ML |
625 | break; |
626 | case 150: | |
cbf628c7 | 627 | baud = B150; |
74510d4b ML |
628 | break; |
629 | case 200: | |
cbf628c7 | 630 | baud = B200; |
74510d4b ML |
631 | break; |
632 | case 300: | |
cbf628c7 | 633 | baud = B300; |
74510d4b ML |
634 | break; |
635 | case 600: | |
cbf628c7 | 636 | baud = B600; |
74510d4b ML |
637 | break; |
638 | case 1200: | |
cbf628c7 | 639 | baud = B1200; |
74510d4b ML |
640 | break; |
641 | case 1800: | |
cbf628c7 | 642 | baud = B1800; |
74510d4b ML |
643 | break; |
644 | case 2400: | |
cbf628c7 | 645 | baud = B2400; |
74510d4b ML |
646 | break; |
647 | case 4800: | |
cbf628c7 | 648 | baud = B4800; |
74510d4b ML |
649 | break; |
650 | case 9600: | |
cbf628c7 | 651 | baud = B9600; |
74510d4b ML |
652 | break; |
653 | case 19200: | |
cbf628c7 | 654 | baud = B19200; |
74510d4b ML |
655 | break; |
656 | case 38400: | |
cbf628c7 | 657 | baud = B38400; |
74510d4b ML |
658 | break; |
659 | case 57600: | |
cbf628c7 | 660 | baud = B57600; |
74510d4b ML |
661 | break; |
662 | case 115200: | |
cbf628c7 | 663 | baud = B115200; |
74510d4b ML |
664 | break; |
665 | case 230400: | |
cbf628c7 | 666 | baud = B230400; |
74510d4b ML |
667 | break; |
668 | #if !defined(__APPLE__) && !defined(__OpenBSD__) | |
669 | case 460800: | |
cbf628c7 | 670 | baud = B460800; |
74510d4b ML |
671 | break; |
672 | #endif | |
673 | default: | |
674 | return SP_ERR_ARG; | |
675 | } | |
cbf628c7 ML |
676 | |
677 | if (cfsetospeed(&data->term, baud) < 0) | |
678 | return SP_ERR_FAIL; | |
679 | ||
680 | if (cfsetispeed(&data->term, baud) < 0) | |
681 | return SP_ERR_FAIL; | |
682 | ||
8094e4a0 ML |
683 | #endif |
684 | return SP_OK; | |
685 | } | |
74510d4b | 686 | |
8094e4a0 ML |
687 | static int set_bits(struct sp_port_data *data, int bits) |
688 | { | |
689 | #ifdef _WIN32 | |
690 | data->dcb.ByteSize = bits; | |
691 | #else | |
692 | data->term.c_cflag &= ~CSIZE; | |
74510d4b ML |
693 | switch (bits) { |
694 | case 8: | |
8094e4a0 | 695 | data->term.c_cflag |= CS8; |
74510d4b ML |
696 | break; |
697 | case 7: | |
8094e4a0 | 698 | data->term.c_cflag |= CS7; |
74510d4b | 699 | break; |
d1d566f2 | 700 | case 6: |
8094e4a0 | 701 | data->term.c_cflag |= CS6; |
d1d566f2 | 702 | break; |
74510d4b ML |
703 | default: |
704 | return SP_ERR_ARG; | |
705 | } | |
8094e4a0 ML |
706 | #endif |
707 | return SP_OK; | |
708 | } | |
74510d4b | 709 | |
8094e4a0 ML |
710 | static int set_parity(struct sp_port_data *data, int parity) |
711 | { | |
712 | #ifdef _WIN32 | |
713 | switch (parity) { | |
714 | /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */ | |
715 | case SP_PARITY_NONE: | |
716 | data->dcb.Parity = NOPARITY; | |
717 | break; | |
718 | case SP_PARITY_EVEN: | |
719 | data->dcb.Parity = EVENPARITY; | |
720 | break; | |
721 | case SP_PARITY_ODD: | |
722 | data->dcb.Parity = ODDPARITY; | |
723 | break; | |
724 | default: | |
725 | return SP_ERR_ARG; | |
726 | } | |
727 | #else | |
728 | data->term.c_iflag &= ~IGNPAR; | |
729 | data->term.c_cflag &= ~(PARENB | PARODD); | |
730 | switch (parity) { | |
731 | case SP_PARITY_NONE: | |
732 | data->term.c_iflag |= IGNPAR; | |
733 | break; | |
734 | case SP_PARITY_EVEN: | |
735 | data->term.c_cflag |= PARENB; | |
736 | break; | |
737 | case SP_PARITY_ODD: | |
738 | data->term.c_cflag |= PARENB | PARODD; | |
739 | break; | |
740 | default: | |
741 | return SP_ERR_ARG; | |
742 | } | |
743 | #endif | |
744 | return SP_OK; | |
745 | } | |
746 | ||
747 | static int set_stopbits(struct sp_port_data *data, int stopbits) | |
748 | { | |
749 | #ifdef _WIN32 | |
74510d4b | 750 | switch (stopbits) { |
8094e4a0 | 751 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ |
74510d4b | 752 | case 1: |
8094e4a0 | 753 | data->dcb.StopBits = ONESTOPBIT; |
74510d4b ML |
754 | break; |
755 | case 2: | |
8094e4a0 | 756 | data->dcb.StopBits = TWOSTOPBITS; |
74510d4b ML |
757 | break; |
758 | default: | |
759 | return SP_ERR_ARG; | |
760 | } | |
8094e4a0 ML |
761 | #else |
762 | data->term.c_cflag &= ~CSTOPB; | |
763 | switch (stopbits) { | |
74510d4b | 764 | case 1: |
8094e4a0 | 765 | data->term.c_cflag &= ~CSTOPB; |
74510d4b ML |
766 | break; |
767 | case 2: | |
8094e4a0 | 768 | data->term.c_cflag |= CSTOPB; |
74510d4b ML |
769 | break; |
770 | default: | |
771 | return SP_ERR_ARG; | |
772 | } | |
8094e4a0 ML |
773 | #endif |
774 | return SP_OK; | |
775 | } | |
74510d4b | 776 | |
d514a26f | 777 | static int set_rts(struct sp_port_data *data, int rts) |
8094e4a0 | 778 | { |
d514a26f ML |
779 | #ifdef _WIN32 |
780 | switch (rts) { | |
781 | case SP_RTS_OFF: | |
782 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
74510d4b | 783 | break; |
d514a26f ML |
784 | case SP_RTS_ON: |
785 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
74510d4b | 786 | break; |
d514a26f ML |
787 | case SP_RTS_FLOW_CONTROL: |
788 | data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
74510d4b ML |
789 | break; |
790 | default: | |
791 | return SP_ERR_ARG; | |
792 | } | |
d514a26f ML |
793 | #else |
794 | data->rts = rts; | |
8094e4a0 ML |
795 | #endif |
796 | return SP_OK; | |
797 | } | |
798 | ||
d514a26f | 799 | static int set_cts(struct sp_port_data *data, int cts) |
8094e4a0 ML |
800 | { |
801 | #ifdef _WIN32 | |
d514a26f ML |
802 | switch (cts) { |
803 | case SP_CTS_IGNORE: | |
804 | data->dcb.fOutxCtsFlow = FALSE; | |
805 | break; | |
806 | case SP_CTS_FLOW_CONTROL: | |
807 | data->dcb.fOutxCtsFlow = TRUE; | |
808 | break; | |
809 | default: | |
810 | return SP_ERR_ARG; | |
811 | } | |
8094e4a0 | 812 | #else |
d514a26f | 813 | data->cts = cts; |
8094e4a0 ML |
814 | #endif |
815 | return SP_OK; | |
816 | } | |
817 | ||
818 | static int set_dtr(struct sp_port_data *data, int dtr) | |
819 | { | |
820 | #ifdef _WIN32 | |
d514a26f ML |
821 | switch (dtr) { |
822 | case SP_DTR_OFF: | |
a46f0960 | 823 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; |
d514a26f ML |
824 | break; |
825 | case SP_DTR_ON: | |
826 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
827 | break; | |
828 | case SP_DTR_FLOW_CONTROL: | |
829 | data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; | |
830 | break; | |
831 | default: | |
832 | return SP_ERR_ARG; | |
833 | } | |
8094e4a0 ML |
834 | #else |
835 | data->dtr = dtr; | |
836 | #endif | |
837 | return SP_OK; | |
838 | } | |
839 | ||
d514a26f ML |
840 | static int set_dsr(struct sp_port_data *data, int dsr) |
841 | { | |
842 | #ifdef _WIN32 | |
843 | switch (dsr) { | |
844 | case SP_DSR_IGNORE: | |
845 | data->dcb.fOutxDsrFlow = FALSE; | |
846 | break; | |
847 | case SP_DSR_FLOW_CONTROL: | |
848 | data->dcb.fOutxDsrFlow = TRUE; | |
849 | break; | |
850 | default: | |
851 | return SP_ERR_ARG; | |
852 | } | |
853 | #else | |
854 | data->dsr = dsr; | |
855 | #endif | |
856 | return SP_OK; | |
857 | } | |
858 | ||
859 | static int set_xon_xoff(struct sp_port_data *data, int xon_xoff) | |
860 | { | |
861 | #ifdef _WIN32 | |
862 | switch (xon_xoff) { | |
863 | case SP_XONXOFF_DISABLED: | |
864 | data->dcb.fInX = FALSE; | |
865 | data->dcb.fOutX = FALSE; | |
866 | break; | |
867 | case SP_XONXOFF_IN: | |
868 | data->dcb.fInX = TRUE; | |
869 | data->dcb.fOutX = FALSE; | |
870 | break; | |
871 | case SP_XONXOFF_OUT: | |
872 | data->dcb.fInX = FALSE; | |
873 | data->dcb.fOutX = TRUE; | |
874 | break; | |
875 | case SP_XONXOFF_INOUT: | |
876 | data->dcb.fInX = TRUE; | |
877 | data->dcb.fOutX = TRUE; | |
878 | break; | |
879 | default: | |
880 | return SP_ERR_ARG; | |
881 | } | |
882 | #else | |
883 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
884 | switch (xon_xoff) { | |
885 | case SP_XONXOFF_DISABLED: | |
886 | break; | |
887 | case SP_XONXOFF_IN: | |
888 | data->term.c_iflag |= IXOFF; | |
889 | break; | |
890 | case SP_XONXOFF_OUT: | |
891 | data->term.c_iflag |= IXON | IXANY; | |
892 | break; | |
893 | case SP_XONXOFF_INOUT: | |
894 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
895 | break; | |
896 | default: | |
897 | return SP_ERR_ARG; | |
898 | } | |
899 | #endif | |
900 | return SP_OK; | |
901 | } | |
902 | ||
8094e4a0 ML |
903 | static int apply_config(struct sp_port *port, struct sp_port_data *data) |
904 | { | |
905 | #ifdef _WIN32 | |
906 | if (!SetCommState(port->hdl, &data->dcb)) | |
907 | return SP_ERR_FAIL; | |
908 | #else | |
909 | int controlbits; | |
74510d4b | 910 | |
d514a26f ML |
911 | /* Asymmetric use of RTS/CTS not supported yet. */ |
912 | if ((data->rts == SP_RTS_FLOW_CONTROL) != (data->cts == SP_CTS_FLOW_CONTROL)) | |
913 | return SP_ERR_ARG; | |
914 | ||
915 | /* DTR/DSR flow control not supported yet. */ | |
916 | if (data->dtr == SP_DTR_FLOW_CONTROL || data->dsr == SP_DSR_FLOW_CONTROL) | |
917 | return SP_ERR_ARG; | |
74510d4b | 918 | |
d514a26f ML |
919 | if (data->rts == SP_RTS_FLOW_CONTROL) |
920 | data->term.c_iflag |= CRTSCTS; | |
921 | else | |
922 | { | |
74510d4b | 923 | controlbits = TIOCM_RTS; |
d514a26f | 924 | if (ioctl(port->fd, data->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, |
74510d4b ML |
925 | &controlbits) < 0) |
926 | return SP_ERR_FAIL; | |
927 | } | |
928 | ||
d514a26f ML |
929 | controlbits = TIOCM_DTR; |
930 | if (ioctl(port->fd, data->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, | |
931 | &controlbits) < 0) | |
932 | return SP_ERR_FAIL; | |
933 | ||
934 | /* Write the configured settings. */ | |
935 | if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0) | |
936 | return SP_ERR_FAIL; | |
74510d4b | 937 | #endif |
8094e4a0 ML |
938 | return SP_OK; |
939 | } | |
940 | ||
941 | #define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0) | |
a46f0960 | 942 | #define TRY_SET(x) do { if (config->x >= 0) TRY(set_##x(&data, config->x)); } while (0) |
8094e4a0 | 943 | |
d1202734 | 944 | int sp_set_config(struct sp_port *port, struct sp_port_config *config) |
8094e4a0 ML |
945 | { |
946 | struct sp_port_data data; | |
947 | ||
948 | TRY(start_config(port, &data)); | |
a46f0960 ML |
949 | TRY_SET(baudrate); |
950 | TRY_SET(bits); | |
951 | TRY_SET(parity); | |
952 | TRY_SET(stopbits); | |
a46f0960 | 953 | TRY_SET(rts); |
d514a26f | 954 | TRY_SET(cts); |
a46f0960 | 955 | TRY_SET(dtr); |
d514a26f ML |
956 | TRY_SET(dsr); |
957 | TRY_SET(xon_xoff); | |
8094e4a0 | 958 | TRY(apply_config(port, &data)); |
74510d4b ML |
959 | |
960 | return SP_OK; | |
961 | } | |
962 | ||
9069c2fb ML |
963 | #define CREATE_SETTER(x) int sp_set_##x(struct sp_port *port, int x) { \ |
964 | struct sp_port_data data; \ | |
965 | TRY(start_config(port, &data)); \ | |
966 | TRY(set_##x(&data, x)); \ | |
967 | TRY(apply_config(port, &data)); \ | |
968 | return SP_OK; \ | |
969 | } | |
970 | ||
971 | CREATE_SETTER(baudrate) | |
972 | CREATE_SETTER(bits) | |
973 | CREATE_SETTER(parity) | |
974 | CREATE_SETTER(stopbits) | |
975 | CREATE_SETTER(rts) | |
976 | CREATE_SETTER(cts) | |
977 | CREATE_SETTER(dtr) | |
978 | CREATE_SETTER(dsr) | |
979 | CREATE_SETTER(xon_xoff) | |
980 | ||
74510d4b ML |
981 | int sp_last_error_code(void) |
982 | { | |
983 | #ifdef _WIN32 | |
984 | return GetLastError(); | |
985 | #else | |
986 | return errno; | |
987 | #endif | |
988 | } | |
989 | ||
74510d4b ML |
990 | char *sp_last_error_message(void) |
991 | { | |
992 | #ifdef _WIN32 | |
993 | LPVOID message; | |
994 | DWORD error = GetLastError(); | |
995 | ||
996 | FormatMessage( | |
997 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
998 | FORMAT_MESSAGE_FROM_SYSTEM | | |
999 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
1000 | NULL, | |
1001 | error, | |
1002 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
1003 | (LPTSTR) &message, | |
1004 | 0, NULL ); | |
1005 | ||
1006 | return message; | |
1007 | #else | |
1008 | return strerror(errno); | |
1009 | #endif | |
1010 | } | |
1011 | ||
74510d4b ML |
1012 | void sp_free_error_message(char *message) |
1013 | { | |
1014 | #ifdef _WIN32 | |
1015 | LocalFree(message); | |
64eec30d ML |
1016 | #else |
1017 | (void)message; | |
74510d4b ML |
1018 | #endif |
1019 | } |