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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> | |
31b3a8f5 | 7 | * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz> |
74510d4b ML |
8 | * |
9 | * This program is free software: you can redistribute it and/or modify | |
10 | * it under the terms of the GNU Lesser General Public License as | |
11 | * published by the Free Software Foundation, either version 3 of the | |
12 | * License, or (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public License | |
20 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
21 | */ | |
22 | ||
23 | #include <string.h> | |
24 | #include <sys/types.h> | |
25 | #include <sys/stat.h> | |
26 | #include <fcntl.h> | |
27 | #include <unistd.h> | |
3b63f34d ML |
28 | #include <stdlib.h> |
29 | #include <errno.h> | |
74510d4b ML |
30 | #ifdef _WIN32 |
31 | #include <windows.h> | |
3b63f34d | 32 | #include <tchar.h> |
767c5ba8 | 33 | #include <stdio.h> |
74510d4b | 34 | #else |
74510d4b ML |
35 | #include <termios.h> |
36 | #include <sys/ioctl.h> | |
37 | #endif | |
3b63f34d | 38 | #ifdef __APPLE__ |
1ebf4347 ML |
39 | #include <IOKit/IOKitLib.h> |
40 | #include <IOKit/serial/IOSerialKeys.h> | |
31b3a8f5 | 41 | #include <IOKit/serial/ioss.h> |
1ebf4347 | 42 | #include <sys/syslimits.h> |
3b63f34d ML |
43 | #endif |
44 | #ifdef __linux__ | |
45 | #include "libudev.h" | |
4b97c9fc | 46 | #include "linux/serial.h" |
7a6d2196 | 47 | #include "linux_termios.h" |
40978c2b ML |
48 | #if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX) |
49 | #define USE_TERMIOX | |
50 | #endif | |
3b63f34d | 51 | #endif |
74510d4b | 52 | |
f6a1fb65 | 53 | #include "libserialport.h" |
74510d4b | 54 | |
8f189c4c | 55 | struct port_data { |
8094e4a0 ML |
56 | #ifdef _WIN32 |
57 | DCB dcb; | |
58 | #else | |
59 | struct termios term; | |
824dcb45 | 60 | int controlbits; |
40978c2b ML |
61 | #ifdef USE_TERMIOX |
62 | int flow; | |
63 | #endif | |
8094e4a0 ML |
64 | #endif |
65 | }; | |
66 | ||
da2748bf ML |
67 | /* Standard baud rates. */ |
68 | #ifdef _WIN32 | |
69 | #define BAUD_TYPE DWORD | |
70 | #define BAUD(n) {CBR_##n, n} | |
71 | #else | |
72 | #define BAUD_TYPE speed_t | |
73 | #define BAUD(n) {B##n, n} | |
74 | #endif | |
75 | ||
76 | struct std_baudrate { | |
77 | BAUD_TYPE index; | |
78 | int value; | |
79 | }; | |
80 | ||
81 | const struct std_baudrate std_baudrates[] = { | |
82 | #ifdef _WIN32 | |
83 | /* | |
84 | * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to | |
85 | * have documented CBR_* macros. | |
86 | */ | |
87 | BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800), | |
88 | BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600), | |
eac329d2 | 89 | BAUD(115200), BAUD(128000), BAUD(256000), |
da2748bf | 90 | #else |
eac329d2 UH |
91 | BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200), |
92 | BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800), | |
93 | BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200), | |
94 | BAUD(230400), | |
da2748bf | 95 | #if !defined(__APPLE__) && !defined(__OpenBSD__) |
eac329d2 | 96 | BAUD(460800), |
da2748bf ML |
97 | #endif |
98 | #endif | |
99 | }; | |
100 | ||
101 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) | |
102 | #define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates) | |
103 | ||
7a6d2196 ML |
104 | #define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0) |
105 | ||
348e23cc | 106 | /* Helper functions. */ |
eb6ed20f | 107 | static enum sp_return validate_port(struct sp_port *port); |
348e23cc | 108 | static struct sp_port **list_append(struct sp_port **list, const char *portname); |
eb6ed20f ML |
109 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, |
110 | struct sp_port_config *config); | |
111 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
112 | const struct sp_port_config *config); | |
80186526 | 113 | |
eb6ed20f | 114 | enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) |
d54e9004 ML |
115 | { |
116 | struct sp_port *port; | |
5919c913 | 117 | int len; |
d54e9004 | 118 | |
32b5ac05 ML |
119 | if (!port_ptr) |
120 | return SP_ERR_ARG; | |
121 | ||
77f262c4 ML |
122 | *port_ptr = NULL; |
123 | ||
d4babed2 | 124 | if (!portname) |
77f262c4 | 125 | return SP_ERR_ARG; |
d4babed2 | 126 | |
d54e9004 | 127 | if (!(port = malloc(sizeof(struct sp_port)))) |
77f262c4 | 128 | return SP_ERR_MEM; |
d54e9004 | 129 | |
5919c913 ML |
130 | len = strlen(portname) + 1; |
131 | ||
eac329d2 | 132 | if (!(port->name = malloc(len))) { |
d54e9004 | 133 | free(port); |
77f262c4 | 134 | return SP_ERR_MEM; |
d54e9004 ML |
135 | } |
136 | ||
137 | memcpy(port->name, portname, len); | |
138 | ||
8f471c66 ML |
139 | #ifdef _WIN32 |
140 | port->hdl = INVALID_HANDLE_VALUE; | |
141 | #else | |
142 | port->fd = -1; | |
143 | #endif | |
144 | ||
77f262c4 ML |
145 | *port_ptr = port; |
146 | ||
147 | return SP_OK; | |
d54e9004 ML |
148 | } |
149 | ||
eb6ed20f | 150 | enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr) |
32b5ac05 ML |
151 | { |
152 | if (!copy_ptr) | |
153 | return SP_ERR_ARG; | |
154 | ||
155 | *copy_ptr = NULL; | |
156 | ||
157 | if (!port || !port->name) | |
158 | return SP_ERR_ARG; | |
159 | ||
160 | return sp_get_port_by_name(port->name, copy_ptr); | |
161 | } | |
162 | ||
e3b2f7a4 ML |
163 | void sp_free_port(struct sp_port *port) |
164 | { | |
165 | if (!port) | |
166 | return; | |
167 | ||
168 | if (port->name) | |
169 | free(port->name); | |
170 | ||
171 | free(port); | |
172 | } | |
173 | ||
348e23cc | 174 | static struct sp_port **list_append(struct sp_port **list, const char *portname) |
3b63f34d ML |
175 | { |
176 | void *tmp; | |
177 | unsigned int count; | |
f92f1f0c | 178 | |
3b63f34d | 179 | for (count = 0; list[count]; count++); |
d54e9004 | 180 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) |
3b63f34d ML |
181 | goto fail; |
182 | list = tmp; | |
77f262c4 | 183 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) |
3b63f34d | 184 | goto fail; |
db2794ce | 185 | list[count + 1] = NULL; |
3b63f34d | 186 | return list; |
f92f1f0c | 187 | |
3b63f34d ML |
188 | fail: |
189 | sp_free_port_list(list); | |
190 | return NULL; | |
191 | } | |
192 | ||
eb6ed20f | 193 | enum sp_return sp_list_ports(struct sp_port ***list_ptr) |
3b63f34d | 194 | { |
d54e9004 | 195 | struct sp_port **list; |
77f262c4 | 196 | int ret = SP_OK; |
24c1a4bb | 197 | |
d54e9004 | 198 | if (!(list = malloc(sizeof(struct sp_port **)))) |
f92f1f0c | 199 | return SP_ERR_MEM; |
24c1a4bb ML |
200 | |
201 | list[0] = NULL; | |
3b63f34d ML |
202 | |
203 | #ifdef _WIN32 | |
204 | HKEY key; | |
bdfb5b8c ML |
205 | TCHAR *value, *data; |
206 | DWORD max_value_len, max_data_size, max_data_len; | |
207 | DWORD value_len, data_size, data_len; | |
3b63f34d | 208 | DWORD type, index = 0; |
8b532d9c ML |
209 | char *name; |
210 | int name_len; | |
3b63f34d ML |
211 | |
212 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
eac329d2 | 213 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) { |
77f262c4 ML |
214 | ret = SP_ERR_FAIL; |
215 | goto out_done; | |
216 | } | |
3b63f34d | 217 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
eac329d2 | 218 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) { |
77f262c4 | 219 | ret = SP_ERR_FAIL; |
3b63f34d | 220 | goto out_close; |
77f262c4 | 221 | } |
3b63f34d | 222 | max_data_len = max_data_size / sizeof(TCHAR); |
eac329d2 | 223 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) { |
77f262c4 | 224 | ret = SP_ERR_MEM; |
3b63f34d | 225 | goto out_close; |
77f262c4 | 226 | } |
eac329d2 | 227 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) { |
77f262c4 | 228 | ret = SP_ERR_MEM; |
bdfb5b8c | 229 | goto out_free_value; |
77f262c4 | 230 | } |
3b63f34d | 231 | while ( |
d9573bad | 232 | value_len = max_value_len + 1, |
3b63f34d | 233 | data_size = max_data_size, |
bdfb5b8c | 234 | RegEnumValue(key, index, value, &value_len, |
3b63f34d ML |
235 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) |
236 | { | |
237 | data_len = data_size / sizeof(TCHAR); | |
238 | data[data_len] = '\0'; | |
8b532d9c ML |
239 | #ifdef UNICODE |
240 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL) | |
241 | #else | |
242 | name_len = data_len + 1; | |
243 | #endif | |
eac329d2 | 244 | if (!(name = malloc(name_len))) { |
77f262c4 | 245 | ret = SP_ERR_MEM; |
8b532d9c | 246 | goto out; |
77f262c4 | 247 | } |
8b532d9c ML |
248 | #ifdef UNICODE |
249 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); | |
250 | #else | |
251 | strcpy(name, data); | |
252 | #endif | |
eac329d2 | 253 | if (type == REG_SZ && !(list = list_append(list, name))) { |
77f262c4 ML |
254 | ret = SP_ERR_MEM; |
255 | goto out; | |
256 | } | |
3b63f34d ML |
257 | index++; |
258 | } | |
259 | out: | |
260 | free(data); | |
bdfb5b8c ML |
261 | out_free_value: |
262 | free(value); | |
3b63f34d ML |
263 | out_close: |
264 | RegCloseKey(key); | |
77f262c4 | 265 | out_done: |
3b63f34d ML |
266 | #endif |
267 | #ifdef __APPLE__ | |
268 | mach_port_t master; | |
269 | CFMutableDictionaryRef classes; | |
270 | io_iterator_t iter; | |
271 | char *path; | |
272 | io_object_t port; | |
273 | CFTypeRef cf_path; | |
274 | Boolean result; | |
275 | ||
eac329d2 | 276 | if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) { |
77f262c4 ML |
277 | ret = SP_ERR_FAIL; |
278 | goto out_done; | |
279 | } | |
3b63f34d | 280 | |
eac329d2 | 281 | if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) { |
77f262c4 ML |
282 | ret = SP_ERR_FAIL; |
283 | goto out_done; | |
284 | } | |
3b63f34d ML |
285 | |
286 | CFDictionarySetValue(classes, | |
287 | CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes)); | |
288 | ||
eac329d2 | 289 | if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) { |
77f262c4 ML |
290 | ret = SP_ERR_FAIL; |
291 | goto out_done; | |
292 | } | |
3b63f34d | 293 | |
eac329d2 | 294 | if (!(path = malloc(PATH_MAX))) { |
77f262c4 | 295 | ret = SP_ERR_MEM; |
3b63f34d | 296 | goto out_release; |
77f262c4 | 297 | } |
3b63f34d | 298 | |
1ebf4347 | 299 | while ((port = IOIteratorNext(iter))) { |
3b63f34d ML |
300 | cf_path = IORegistryEntryCreateCFProperty(port, |
301 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); | |
302 | if (cf_path) { | |
303 | result = CFStringGetCString(cf_path, | |
304 | path, PATH_MAX, kCFStringEncodingASCII); | |
305 | CFRelease(cf_path); | |
eac329d2 | 306 | if (result && !(list = list_append(list, path))) { |
77f262c4 ML |
307 | ret = SP_ERR_MEM; |
308 | IOObjectRelease(port); | |
309 | goto out; | |
310 | } | |
3b63f34d ML |
311 | } |
312 | IOObjectRelease(port); | |
313 | } | |
3b63f34d ML |
314 | out: |
315 | free(path); | |
316 | out_release: | |
317 | IOObjectRelease(iter); | |
77f262c4 | 318 | out_done: |
3b63f34d ML |
319 | #endif |
320 | #ifdef __linux__ | |
321 | struct udev *ud; | |
322 | struct udev_enumerate *ud_enumerate; | |
323 | struct udev_list_entry *ud_list; | |
324 | struct udev_list_entry *ud_entry; | |
325 | const char *path; | |
08fe0bdb | 326 | struct udev_device *ud_dev, *ud_parent; |
3b63f34d | 327 | const char *name; |
4b97c9fc ML |
328 | const char *driver; |
329 | int fd, ioctl_result; | |
330 | struct serial_struct serial_info; | |
3b63f34d ML |
331 | |
332 | ud = udev_new(); | |
333 | ud_enumerate = udev_enumerate_new(ud); | |
334 | udev_enumerate_add_match_subsystem(ud_enumerate, "tty"); | |
335 | udev_enumerate_scan_devices(ud_enumerate); | |
336 | ud_list = udev_enumerate_get_list_entry(ud_enumerate); | |
eac329d2 | 337 | udev_list_entry_foreach(ud_entry, ud_list) { |
3b63f34d ML |
338 | path = udev_list_entry_get_name(ud_entry); |
339 | ud_dev = udev_device_new_from_syspath(ud, path); | |
08fe0bdb ML |
340 | /* If there is no parent device, this is a virtual tty. */ |
341 | ud_parent = udev_device_get_parent(ud_dev); | |
eac329d2 | 342 | if (ud_parent == NULL) { |
08fe0bdb ML |
343 | udev_device_unref(ud_dev); |
344 | continue; | |
345 | } | |
3b63f34d | 346 | name = udev_device_get_devnode(ud_dev); |
4b97c9fc ML |
347 | /* The serial8250 driver has a hardcoded number of ports. |
348 | * The only way to tell which actually exist on a given system | |
349 | * is to try to open them and make an ioctl call. */ | |
350 | driver = udev_device_get_driver(ud_parent); | |
eac329d2 | 351 | if (driver && !strcmp(driver, "serial8250")) { |
4b97c9fc ML |
352 | if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) |
353 | goto skip; | |
354 | ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info); | |
355 | close(fd); | |
356 | if (ioctl_result != 0) | |
357 | goto skip; | |
358 | if (serial_info.type == PORT_UNKNOWN) | |
359 | goto skip; | |
360 | } | |
348e23cc | 361 | list = list_append(list, name); |
4b97c9fc | 362 | skip: |
3b63f34d | 363 | udev_device_unref(ud_dev); |
eac329d2 | 364 | if (!list) { |
77f262c4 | 365 | ret = SP_ERR_MEM; |
3b63f34d | 366 | goto out; |
77f262c4 | 367 | } |
3b63f34d ML |
368 | } |
369 | out: | |
370 | udev_enumerate_unref(ud_enumerate); | |
371 | udev_unref(ud); | |
3b63f34d | 372 | #endif |
77f262c4 | 373 | |
eac329d2 | 374 | if (ret == SP_OK) { |
77f262c4 | 375 | *list_ptr = list; |
eac329d2 | 376 | } else { |
77f262c4 ML |
377 | if (list) |
378 | sp_free_port_list(list); | |
77f262c4 ML |
379 | *list_ptr = NULL; |
380 | } | |
381 | ||
382 | return ret; | |
3b63f34d ML |
383 | } |
384 | ||
d54e9004 | 385 | void sp_free_port_list(struct sp_port **list) |
3b63f34d ML |
386 | { |
387 | unsigned int i; | |
f92f1f0c | 388 | |
3b63f34d | 389 | for (i = 0; list[i]; i++) |
e3b2f7a4 | 390 | sp_free_port(list[i]); |
3b63f34d ML |
391 | free(list); |
392 | } | |
393 | ||
eb6ed20f | 394 | static enum sp_return validate_port(struct sp_port *port) |
74510d4b ML |
395 | { |
396 | if (port == NULL) | |
397 | return 0; | |
398 | #ifdef _WIN32 | |
399 | if (port->hdl == INVALID_HANDLE_VALUE) | |
400 | return 0; | |
401 | #else | |
402 | if (port->fd < 0) | |
403 | return 0; | |
404 | #endif | |
405 | return 1; | |
406 | } | |
407 | ||
348e23cc | 408 | #define CHECK_PORT() do { if (!validate_port(port)) return SP_ERR_ARG; } while (0) |
74510d4b | 409 | |
eb6ed20f | 410 | enum sp_return sp_open(struct sp_port *port, enum sp_mode flags) |
74510d4b ML |
411 | { |
412 | if (!port) | |
413 | return SP_ERR_ARG; | |
414 | ||
74510d4b ML |
415 | #ifdef _WIN32 |
416 | DWORD desired_access = 0, flags_and_attributes = 0; | |
99945a1f ML |
417 | char *escaped_port_name; |
418 | ||
419 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
420 | if (!(escaped_port_name = malloc(strlen(port->name + 5)))) | |
421 | return SP_ERR_MEM; | |
422 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
423 | ||
74510d4b | 424 | /* Map 'flags' to the OS-specific settings. */ |
74510d4b | 425 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; |
a036341b ML |
426 | if (flags & SP_MODE_READ) |
427 | desired_access |= GENERIC_READ; | |
428 | if (flags & SP_MODE_WRITE) | |
74510d4b ML |
429 | desired_access |= GENERIC_WRITE; |
430 | if (flags & SP_MODE_NONBLOCK) | |
431 | flags_and_attributes |= FILE_FLAG_OVERLAPPED; | |
432 | ||
99945a1f | 433 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, |
74510d4b | 434 | OPEN_EXISTING, flags_and_attributes, 0); |
99945a1f ML |
435 | |
436 | free(escaped_port_name); | |
437 | ||
74510d4b ML |
438 | if (port->hdl == INVALID_HANDLE_VALUE) |
439 | return SP_ERR_FAIL; | |
440 | #else | |
441 | int flags_local = 0; | |
8f189c4c | 442 | struct port_data data; |
e33ab9aa ML |
443 | struct sp_port_config config; |
444 | int ret; | |
f92f1f0c | 445 | |
74510d4b | 446 | /* Map 'flags' to the OS-specific settings. */ |
a036341b | 447 | if (flags & (SP_MODE_READ | SP_MODE_WRITE)) |
74510d4b | 448 | flags_local |= O_RDWR; |
a036341b | 449 | else if (flags & SP_MODE_READ) |
74510d4b | 450 | flags_local |= O_RDONLY; |
a036341b ML |
451 | else if (flags & SP_MODE_WRITE) |
452 | flags_local |= O_WRONLY; | |
74510d4b ML |
453 | if (flags & SP_MODE_NONBLOCK) |
454 | flags_local |= O_NONBLOCK; | |
455 | ||
456 | if ((port->fd = open(port->name, flags_local)) < 0) | |
457 | return SP_ERR_FAIL; | |
9cb98459 | 458 | |
e33ab9aa ML |
459 | ret = get_config(port, &data, &config); |
460 | ||
eac329d2 | 461 | if (ret < 0) { |
e33ab9aa ML |
462 | sp_close(port); |
463 | return ret; | |
464 | } | |
9cb98459 ML |
465 | |
466 | /* Turn off all serial port cooking. */ | |
467 | data.term.c_iflag &= ~(ISTRIP | INLCR | ICRNL); | |
468 | data.term.c_oflag &= ~(ONLCR | OCRNL | ONOCR); | |
469 | #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) | |
470 | data.term.c_oflag &= ~OFILL; | |
471 | #endif | |
472 | /* Disable canonical mode, and don't echo input characters. */ | |
473 | data.term.c_lflag &= ~(ICANON | ECHO); | |
474 | ||
475 | /* Ignore modem status lines; enable receiver */ | |
476 | data.term.c_cflag |= (CLOCAL | CREAD); | |
477 | ||
e33ab9aa ML |
478 | ret = set_config(port, &data, &config); |
479 | ||
eac329d2 | 480 | if (ret < 0) { |
e33ab9aa ML |
481 | sp_close(port); |
482 | return ret; | |
483 | } | |
74510d4b ML |
484 | #endif |
485 | ||
486 | return SP_OK; | |
487 | } | |
488 | ||
eb6ed20f | 489 | enum sp_return sp_close(struct sp_port *port) |
74510d4b ML |
490 | { |
491 | CHECK_PORT(); | |
492 | ||
493 | #ifdef _WIN32 | |
494 | /* Returns non-zero upon success, 0 upon failure. */ | |
495 | if (CloseHandle(port->hdl) == 0) | |
496 | return SP_ERR_FAIL; | |
8f471c66 | 497 | port->hdl = INVALID_HANDLE_VALUE; |
74510d4b ML |
498 | #else |
499 | /* Returns 0 upon success, -1 upon failure. */ | |
500 | if (close(port->fd) == -1) | |
501 | return SP_ERR_FAIL; | |
8f471c66 | 502 | port->fd = -1; |
74510d4b ML |
503 | #endif |
504 | ||
505 | return SP_OK; | |
506 | } | |
507 | ||
fd8fd11a | 508 | enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers) |
74510d4b ML |
509 | { |
510 | CHECK_PORT(); | |
511 | ||
512 | #ifdef _WIN32 | |
fd8fd11a ML |
513 | DWORD flags = 0; |
514 | if (buffers & SP_BUF_INPUT) | |
515 | flags |= PURGE_RXCLEAR; | |
516 | if (buffers & SP_BUF_OUTPUT) | |
517 | flags |= PURGE_TXCLEAR; | |
518 | ||
74510d4b | 519 | /* Returns non-zero upon success, 0 upon failure. */ |
fd8fd11a | 520 | if (PurgeComm(port->hdl, flags) == 0) |
74510d4b ML |
521 | return SP_ERR_FAIL; |
522 | #else | |
fd8fd11a ML |
523 | int flags = 0; |
524 | if (buffers & SP_BUF_BOTH) | |
525 | flags = TCIOFLUSH; | |
526 | else if (buffers & SP_BUF_INPUT) | |
527 | flags = TCIFLUSH; | |
528 | if (buffers & SP_BUF_OUTPUT) | |
529 | flags = TCOFLUSH; | |
530 | ||
74510d4b | 531 | /* Returns 0 upon success, -1 upon failure. */ |
fd8fd11a | 532 | if (tcflush(port->fd, flags) < 0) |
74510d4b ML |
533 | return SP_ERR_FAIL; |
534 | #endif | |
535 | return SP_OK; | |
536 | } | |
537 | ||
69a3739c ML |
538 | enum sp_return sp_drain(struct sp_port *port) |
539 | { | |
540 | CHECK_PORT(); | |
541 | ||
542 | #ifdef _WIN32 | |
543 | /* Returns non-zero upon success, 0 upon failure. */ | |
544 | if (FlushFileBuffers(port->hdl) == 0) | |
545 | return SP_ERR_FAIL; | |
546 | #else | |
547 | /* Returns 0 upon success, -1 upon failure. */ | |
548 | if (tcdrain(port->fd) < 0) | |
549 | return SP_ERR_FAIL; | |
550 | #endif | |
551 | ||
552 | return SP_OK; | |
553 | } | |
554 | ||
eb6ed20f | 555 | enum sp_return sp_write(struct sp_port *port, const void *buf, size_t count) |
74510d4b ML |
556 | { |
557 | CHECK_PORT(); | |
558 | ||
559 | if (!buf) | |
560 | return SP_ERR_ARG; | |
561 | ||
562 | #ifdef _WIN32 | |
563 | DWORD written = 0; | |
f92f1f0c | 564 | |
74510d4b ML |
565 | /* Returns non-zero upon success, 0 upon failure. */ |
566 | if (WriteFile(port->hdl, buf, count, &written, NULL) == 0) | |
567 | return SP_ERR_FAIL; | |
568 | return written; | |
569 | #else | |
570 | /* Returns the number of bytes written, or -1 upon failure. */ | |
571 | ssize_t written = write(port->fd, buf, count); | |
f92f1f0c | 572 | |
74510d4b ML |
573 | if (written < 0) |
574 | return SP_ERR_FAIL; | |
575 | else | |
f92f1f0c | 576 | return written; |
74510d4b ML |
577 | #endif |
578 | } | |
579 | ||
eb6ed20f | 580 | enum sp_return sp_read(struct sp_port *port, void *buf, size_t count) |
74510d4b ML |
581 | { |
582 | CHECK_PORT(); | |
583 | ||
584 | if (!buf) | |
585 | return SP_ERR_ARG; | |
586 | ||
587 | #ifdef _WIN32 | |
588 | DWORD bytes_read = 0; | |
f92f1f0c | 589 | |
74510d4b ML |
590 | /* Returns non-zero upon success, 0 upon failure. */ |
591 | if (ReadFile(port->hdl, buf, count, &bytes_read, NULL) == 0) | |
592 | return SP_ERR_FAIL; | |
593 | return bytes_read; | |
594 | #else | |
595 | ssize_t bytes_read; | |
f92f1f0c | 596 | |
74510d4b ML |
597 | /* Returns the number of bytes read, or -1 upon failure. */ |
598 | if ((bytes_read = read(port->fd, buf, count)) < 0) | |
599 | return SP_ERR_FAIL; | |
600 | return bytes_read; | |
601 | #endif | |
602 | } | |
603 | ||
7a6d2196 ML |
604 | #ifdef __linux__ |
605 | static enum sp_return get_baudrate(int fd, int *baudrate) | |
606 | { | |
607 | void *data; | |
608 | ||
609 | if (!(data = malloc(get_termios_size()))) | |
610 | return SP_ERR_MEM; | |
611 | ||
612 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) | |
613 | return SP_ERR_FAIL; | |
614 | ||
615 | *baudrate = get_termios_speed(data); | |
616 | ||
617 | return SP_OK; | |
618 | } | |
619 | ||
620 | static enum sp_return set_baudrate(int fd, int baudrate) | |
621 | { | |
622 | void *data; | |
623 | ||
624 | if (!(data = malloc(get_termios_size()))) | |
625 | return SP_ERR_MEM; | |
626 | ||
627 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) | |
628 | return SP_ERR_FAIL; | |
629 | ||
630 | set_termios_speed(data, baudrate); | |
631 | ||
632 | if (ioctl(fd, get_termios_set_ioctl(), data) < 0) | |
633 | return SP_ERR_FAIL; | |
634 | ||
635 | return SP_OK; | |
636 | } | |
40978c2b ML |
637 | |
638 | #ifdef USE_TERMIOX | |
639 | static enum sp_return get_flow(int fd, int *flow) | |
640 | { | |
641 | void *data; | |
642 | ||
643 | if (!(data = malloc(get_termiox_size()))) | |
644 | return SP_ERR_MEM; | |
645 | ||
646 | if (ioctl(fd, TCGETX, data) < 0) | |
647 | return SP_ERR_FAIL; | |
648 | ||
649 | *flow = get_termiox_flow(data); | |
650 | ||
651 | return SP_OK; | |
652 | } | |
653 | ||
654 | static enum sp_return set_flow(int fd, int flow) | |
655 | { | |
656 | void *data; | |
657 | ||
658 | if (!(data = malloc(get_termiox_size()))) | |
659 | return SP_ERR_MEM; | |
660 | ||
661 | if (ioctl(fd, TCGETX, data) < 0) | |
662 | return SP_ERR_FAIL; | |
663 | ||
664 | set_termiox_flow(data, flow); | |
665 | ||
666 | if (ioctl(fd, TCSETX, data) < 0) | |
667 | return SP_ERR_FAIL; | |
668 | ||
669 | return SP_OK; | |
670 | } | |
671 | #endif /* USE_TERMIOX */ | |
672 | #endif /* __linux__ */ | |
7a6d2196 | 673 | |
eb6ed20f ML |
674 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, |
675 | struct sp_port_config *config) | |
8094e4a0 | 676 | { |
da2748bf | 677 | unsigned int i; |
cbf628c7 | 678 | |
8094e4a0 | 679 | #ifdef _WIN32 |
e33ab9aa | 680 | if (!GetCommState(port->hdl, &data->dcb)) |
d514a26f | 681 | return SP_ERR_FAIL; |
8094e4a0 | 682 | |
067417af | 683 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
e33ab9aa | 684 | if (data->dcb.BaudRate == std_baudrates[i].index) { |
067417af ML |
685 | config->baudrate = std_baudrates[i].value; |
686 | break; | |
687 | } | |
688 | } | |
689 | ||
690 | if (i == NUM_STD_BAUDRATES) | |
691 | /* BaudRate field can be either an index or a custom baud rate. */ | |
e33ab9aa | 692 | config->baudrate = data->dcb.BaudRate; |
067417af | 693 | |
e33ab9aa | 694 | config->bits = data->dcb.ByteSize; |
067417af | 695 | |
e33ab9aa ML |
696 | if (data->dcb.fParity) |
697 | switch (data->dcb.Parity) { | |
067417af ML |
698 | case NOPARITY: |
699 | config->parity = SP_PARITY_NONE; | |
700 | break; | |
701 | case EVENPARITY: | |
702 | config->parity = SP_PARITY_EVEN; | |
703 | break; | |
704 | case ODDPARITY: | |
705 | config->parity = SP_PARITY_ODD; | |
706 | break; | |
707 | default: | |
708 | config->parity = -1; | |
709 | } | |
710 | else | |
711 | config->parity = SP_PARITY_NONE; | |
712 | ||
e33ab9aa | 713 | switch (data->dcb.StopBits) { |
067417af ML |
714 | case ONESTOPBIT: |
715 | config->stopbits = 1; | |
716 | break; | |
717 | case TWOSTOPBITS: | |
718 | config->stopbits = 2; | |
719 | break; | |
720 | default: | |
721 | config->stopbits = -1; | |
722 | } | |
723 | ||
e33ab9aa | 724 | switch (data->dcb.fRtsControl) { |
eac329d2 UH |
725 | case RTS_CONTROL_DISABLE: |
726 | config->rts = SP_RTS_OFF; | |
727 | break; | |
728 | case RTS_CONTROL_ENABLE: | |
729 | config->rts = SP_RTS_ON; | |
730 | break; | |
731 | case RTS_CONTROL_HANDSHAKE: | |
732 | config->rts = SP_RTS_FLOW_CONTROL; | |
733 | break; | |
734 | default: | |
735 | config->rts = -1; | |
067417af ML |
736 | } |
737 | ||
e33ab9aa | 738 | config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; |
067417af | 739 | |
e33ab9aa | 740 | switch (data->dcb.fDtrControl) { |
eac329d2 UH |
741 | case DTR_CONTROL_DISABLE: |
742 | config->dtr = SP_DTR_OFF; | |
743 | break; | |
744 | case DTR_CONTROL_ENABLE: | |
745 | config->dtr = SP_DTR_ON; | |
746 | break; | |
747 | case DTR_CONTROL_HANDSHAKE: | |
748 | config->dtr = SP_DTR_FLOW_CONTROL; | |
749 | break; | |
750 | default: | |
751 | config->dtr = -1; | |
067417af ML |
752 | } |
753 | ||
e33ab9aa ML |
754 | config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; |
755 | ||
c6754b45 ML |
756 | if (data->dcb.fInX) { |
757 | if (data->dcb.fOutX) | |
758 | config->xon_xoff = SP_XONXOFF_INOUT; | |
759 | else | |
760 | config->xon_xoff = SP_XONXOFF_IN; | |
761 | } else { | |
762 | if (data->dcb.fOutX) | |
763 | config->xon_xoff = SP_XONXOFF_OUT; | |
764 | else | |
765 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
766 | } | |
767 | ||
e33ab9aa ML |
768 | #else // !_WIN32 |
769 | ||
770 | if (tcgetattr(port->fd, &data->term) < 0) | |
771 | return SP_ERR_FAIL; | |
772 | ||
773 | if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0) | |
774 | return SP_ERR_FAIL; | |
40978c2b ML |
775 | |
776 | #ifdef USE_TERMIOX | |
777 | TRY(get_flow(port->fd, &data->flow)); | |
778 | #endif | |
779 | ||
067417af | 780 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
e33ab9aa | 781 | if (cfgetispeed(&data->term) == std_baudrates[i].index) { |
067417af ML |
782 | config->baudrate = std_baudrates[i].value; |
783 | break; | |
784 | } | |
785 | } | |
786 | ||
31b3a8f5 MH |
787 | if (i == NUM_STD_BAUDRATES) { |
788 | #ifdef __APPLE__ | |
789 | config->baudrate = (int)data->term.c_ispeed; | |
7a6d2196 ML |
790 | #elif defined(__linux__) |
791 | TRY(get_baudrate(port->fd, &config->baudrate)); | |
31b3a8f5 | 792 | #else |
067417af | 793 | config->baudrate = -1; |
31b3a8f5 MH |
794 | #endif |
795 | } | |
067417af | 796 | |
e33ab9aa | 797 | switch (data->term.c_cflag & CSIZE) { |
067417af ML |
798 | case CS8: |
799 | config->bits = 8; | |
800 | break; | |
801 | case CS7: | |
802 | config->bits = 7; | |
803 | break; | |
804 | case CS6: | |
805 | config->bits = 6; | |
806 | break; | |
807 | case CS5: | |
808 | config->bits = 5; | |
809 | break; | |
810 | default: | |
811 | config->bits = -1; | |
812 | } | |
813 | ||
e33ab9aa | 814 | if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR)) |
067417af | 815 | config->parity = SP_PARITY_NONE; |
e33ab9aa | 816 | else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR)) |
067417af ML |
817 | config->parity = -1; |
818 | else | |
e33ab9aa | 819 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN; |
067417af | 820 | |
e33ab9aa | 821 | config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1; |
067417af | 822 | |
e33ab9aa | 823 | if (data->term.c_cflag & CRTSCTS) { |
067417af ML |
824 | config->rts = SP_RTS_FLOW_CONTROL; |
825 | config->cts = SP_CTS_FLOW_CONTROL; | |
826 | } else { | |
40978c2b ML |
827 | #ifdef USE_TERMIOX |
828 | if (data->flow & RTS_FLOW) | |
829 | config->rts = SP_RTS_FLOW_CONTROL; | |
830 | else | |
831 | config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; | |
832 | ||
833 | config->cts = (data->flow & CTS_FLOW) ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
834 | #else | |
e33ab9aa | 835 | config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; |
067417af | 836 | config->cts = SP_CTS_IGNORE; |
40978c2b | 837 | #endif |
067417af ML |
838 | } |
839 | ||
40978c2b ML |
840 | #ifdef USE_TERMIOX |
841 | if (data->flow & DTR_FLOW) | |
842 | config->dtr = SP_DTR_FLOW_CONTROL; | |
843 | else | |
844 | config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; | |
845 | ||
846 | config->dsr = (data->flow & DSR_FLOW) ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
847 | #else | |
e33ab9aa | 848 | config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; |
067417af | 849 | config->dsr = SP_DSR_IGNORE; |
40978c2b | 850 | #endif |
705bdc69 | 851 | |
e29b93a5 ML |
852 | if (data->term.c_iflag & IXOFF) { |
853 | if (data->term.c_iflag & IXON) | |
854 | config->xon_xoff = SP_XONXOFF_INOUT; | |
855 | else | |
856 | config->xon_xoff = SP_XONXOFF_IN; | |
857 | } else { | |
858 | if (data->term.c_iflag & IXON) | |
859 | config->xon_xoff = SP_XONXOFF_OUT; | |
860 | else | |
861 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
862 | } | |
067417af ML |
863 | #endif |
864 | ||
865 | return SP_OK; | |
866 | } | |
867 | ||
7a6d2196 | 868 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, |
eb6ed20f | 869 | const struct sp_port_config *config) |
18fc2dd1 | 870 | { |
e33ab9aa | 871 | unsigned int i; |
31b3a8f5 MH |
872 | #ifdef __APPLE__ |
873 | BAUD_TYPE baud_nonstd; | |
874 | ||
875 | baud_nonstd = B0; | |
876 | #endif | |
7a6d2196 ML |
877 | #ifdef __linux__ |
878 | int baud_nonstd = 0; | |
879 | #endif | |
18fc2dd1 | 880 | |
e33ab9aa | 881 | #ifdef _WIN32 |
eac329d2 | 882 | if (config->baudrate >= 0) { |
e33ab9aa ML |
883 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
884 | if (config->baudrate == std_baudrates[i].value) { | |
885 | data->dcb.BaudRate = std_baudrates[i].index; | |
886 | break; | |
887 | } | |
888 | } | |
18fc2dd1 | 889 | |
e33ab9aa ML |
890 | if (i == NUM_STD_BAUDRATES) |
891 | data->dcb.BaudRate = config->baudrate; | |
892 | } | |
18fc2dd1 | 893 | |
e33ab9aa ML |
894 | if (config->bits >= 0) |
895 | data->dcb.ByteSize = config->bits; | |
896 | ||
897 | if (config->parity >= 0) { | |
898 | switch (config->parity) { | |
899 | /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */ | |
900 | case SP_PARITY_NONE: | |
901 | data->dcb.Parity = NOPARITY; | |
902 | break; | |
903 | case SP_PARITY_EVEN: | |
904 | data->dcb.Parity = EVENPARITY; | |
905 | break; | |
906 | case SP_PARITY_ODD: | |
907 | data->dcb.Parity = ODDPARITY; | |
908 | break; | |
909 | default: | |
910 | return SP_ERR_ARG; | |
911 | } | |
18fc2dd1 ML |
912 | } |
913 | ||
e33ab9aa ML |
914 | if (config->stopbits >= 0) { |
915 | switch (config->stopbits) { | |
916 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ | |
917 | case 1: | |
918 | data->dcb.StopBits = ONESTOPBIT; | |
919 | break; | |
920 | case 2: | |
921 | data->dcb.StopBits = TWOSTOPBITS; | |
922 | break; | |
923 | default: | |
924 | return SP_ERR_ARG; | |
925 | } | |
926 | } | |
927 | ||
928 | if (config->rts >= 0) { | |
929 | switch (config->rts) { | |
930 | case SP_RTS_OFF: | |
931 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
932 | break; | |
933 | case SP_RTS_ON: | |
934 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
935 | break; | |
936 | case SP_RTS_FLOW_CONTROL: | |
937 | data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
938 | break; | |
939 | default: | |
940 | return SP_ERR_ARG; | |
941 | } | |
942 | } | |
943 | ||
944 | if (config->cts >= 0) { | |
945 | switch (config->cts) { | |
946 | case SP_CTS_IGNORE: | |
947 | data->dcb.fOutxCtsFlow = FALSE; | |
948 | break; | |
949 | case SP_CTS_FLOW_CONTROL: | |
950 | data->dcb.fOutxCtsFlow = TRUE; | |
951 | break; | |
952 | default: | |
953 | return SP_ERR_ARG; | |
954 | } | |
955 | } | |
956 | ||
957 | if (config->dtr >= 0) { | |
958 | switch (config->dtr) { | |
959 | case SP_DTR_OFF: | |
960 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
961 | break; | |
962 | case SP_DTR_ON: | |
963 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
964 | break; | |
965 | case SP_DTR_FLOW_CONTROL: | |
966 | data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; | |
967 | break; | |
968 | default: | |
969 | return SP_ERR_ARG; | |
970 | } | |
971 | } | |
972 | ||
973 | if (config->dsr >= 0) { | |
974 | switch (config->dsr) { | |
975 | case SP_DSR_IGNORE: | |
976 | data->dcb.fOutxDsrFlow = FALSE; | |
977 | break; | |
978 | case SP_DSR_FLOW_CONTROL: | |
979 | data->dcb.fOutxDsrFlow = TRUE; | |
980 | break; | |
981 | default: | |
982 | return SP_ERR_ARG; | |
983 | } | |
18fc2dd1 ML |
984 | } |
985 | ||
e33ab9aa ML |
986 | if (config->xon_xoff >= 0) { |
987 | switch (config->xon_xoff) { | |
988 | case SP_XONXOFF_DISABLED: | |
989 | data->dcb.fInX = FALSE; | |
990 | data->dcb.fOutX = FALSE; | |
991 | break; | |
992 | case SP_XONXOFF_IN: | |
993 | data->dcb.fInX = TRUE; | |
994 | data->dcb.fOutX = FALSE; | |
995 | break; | |
996 | case SP_XONXOFF_OUT: | |
997 | data->dcb.fInX = FALSE; | |
998 | data->dcb.fOutX = TRUE; | |
999 | break; | |
1000 | case SP_XONXOFF_INOUT: | |
1001 | data->dcb.fInX = TRUE; | |
1002 | data->dcb.fOutX = TRUE; | |
1003 | break; | |
1004 | default: | |
1005 | return SP_ERR_ARG; | |
1006 | } | |
1007 | } | |
1008 | ||
1009 | if (!SetCommState(port->hdl, &data->dcb)) | |
1010 | return SP_ERR_FAIL; | |
1011 | ||
31b3a8f5 | 1012 | #else /* !_WIN32 */ |
e33ab9aa | 1013 | |
7a6d2196 ML |
1014 | int controlbits; |
1015 | ||
eac329d2 | 1016 | if (config->baudrate >= 0) { |
e33ab9aa ML |
1017 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
1018 | if (config->baudrate == std_baudrates[i].value) { | |
1019 | if (cfsetospeed(&data->term, std_baudrates[i].index) < 0) | |
1020 | return SP_ERR_FAIL; | |
1021 | ||
1022 | if (cfsetispeed(&data->term, std_baudrates[i].index) < 0) | |
1023 | return SP_ERR_FAIL; | |
1024 | break; | |
1025 | } | |
1026 | } | |
1027 | ||
31b3a8f5 MH |
1028 | /* Non-standard baud rate */ |
1029 | if (i == NUM_STD_BAUDRATES) { | |
1030 | #ifdef __APPLE__ | |
1031 | /* Set "dummy" baud rate */ | |
1032 | if (cfsetspeed(&data->term, B9600) < 0) | |
1033 | return SP_ERR_FAIL; | |
1034 | baud_nonstd = config->baudrate; | |
7a6d2196 ML |
1035 | #elif defined(__linux__) |
1036 | baud_nonstd = 1; | |
31b3a8f5 | 1037 | #else |
e33ab9aa | 1038 | return SP_ERR_ARG; |
31b3a8f5 MH |
1039 | #endif |
1040 | } | |
e33ab9aa ML |
1041 | } |
1042 | ||
1043 | if (config->bits >= 0) { | |
1044 | data->term.c_cflag &= ~CSIZE; | |
1045 | switch (config->bits) { | |
1046 | case 8: | |
1047 | data->term.c_cflag |= CS8; | |
1048 | break; | |
1049 | case 7: | |
1050 | data->term.c_cflag |= CS7; | |
1051 | break; | |
1052 | case 6: | |
1053 | data->term.c_cflag |= CS6; | |
1054 | break; | |
23922313 UH |
1055 | case 5: |
1056 | data->term.c_cflag |= CS5; | |
1057 | break; | |
e33ab9aa ML |
1058 | default: |
1059 | return SP_ERR_ARG; | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | if (config->parity >= 0) { | |
1064 | data->term.c_iflag &= ~IGNPAR; | |
1065 | data->term.c_cflag &= ~(PARENB | PARODD); | |
1066 | switch (config->parity) { | |
1067 | case SP_PARITY_NONE: | |
1068 | data->term.c_iflag |= IGNPAR; | |
1069 | break; | |
1070 | case SP_PARITY_EVEN: | |
1071 | data->term.c_cflag |= PARENB; | |
1072 | break; | |
1073 | case SP_PARITY_ODD: | |
1074 | data->term.c_cflag |= PARENB | PARODD; | |
1075 | break; | |
1076 | default: | |
1077 | return SP_ERR_ARG; | |
1078 | } | |
1079 | } | |
1080 | ||
1081 | if (config->stopbits >= 0) { | |
1082 | data->term.c_cflag &= ~CSTOPB; | |
1083 | switch (config->stopbits) { | |
1084 | case 1: | |
1085 | data->term.c_cflag &= ~CSTOPB; | |
1086 | break; | |
1087 | case 2: | |
1088 | data->term.c_cflag |= CSTOPB; | |
1089 | break; | |
1090 | default: | |
1091 | return SP_ERR_ARG; | |
1092 | } | |
1093 | } | |
1094 | ||
eac329d2 | 1095 | if (config->rts >= 0 || config->cts >= 0) { |
40978c2b ML |
1096 | #ifdef USE_TERMIOX |
1097 | data->flow &= ~(RTS_FLOW | CTS_FLOW); | |
1098 | switch (config->rts) { | |
1099 | case SP_RTS_OFF: | |
1100 | case SP_RTS_ON: | |
1101 | controlbits = TIOCM_RTS; | |
1102 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, | |
1103 | &controlbits) < 0) | |
1104 | return SP_ERR_FAIL; | |
1105 | break; | |
1106 | case SP_RTS_FLOW_CONTROL: | |
1107 | data->flow |= RTS_FLOW; | |
1108 | break; | |
1109 | default: | |
1110 | break; | |
1111 | } | |
1112 | if (config->cts == SP_CTS_FLOW_CONTROL) | |
1113 | data->flow |= CTS_FLOW; | |
e33ab9aa | 1114 | |
40978c2b ML |
1115 | if (data->flow & (RTS_FLOW | CTS_FLOW)) |
1116 | data->term.c_iflag |= CRTSCTS; | |
1117 | else | |
1118 | data->term.c_iflag &= ~CRTSCTS; | |
1119 | #else | |
1120 | /* Asymmetric use of RTS/CTS not supported. */ | |
e33ab9aa ML |
1121 | if (data->term.c_iflag & CRTSCTS) { |
1122 | /* Flow control can only be disabled for both RTS & CTS together. */ | |
1123 | if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) { | |
1124 | if (config->cts != SP_CTS_IGNORE) | |
1125 | return SP_ERR_ARG; | |
1126 | } | |
1127 | if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) { | |
1128 | if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL) | |
1129 | return SP_ERR_ARG; | |
1130 | } | |
1131 | } else { | |
1132 | /* Flow control can only be enabled for both RTS & CTS together. */ | |
1133 | if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) || | |
1134 | ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL))) | |
1135 | return SP_ERR_ARG; | |
1136 | } | |
1137 | ||
1138 | if (config->rts >= 0) { | |
1139 | if (config->rts == SP_RTS_FLOW_CONTROL) { | |
1140 | data->term.c_iflag |= CRTSCTS; | |
1141 | } else { | |
7a6d2196 | 1142 | controlbits = TIOCM_RTS; |
e33ab9aa ML |
1143 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, |
1144 | &controlbits) < 0) | |
1145 | return SP_ERR_FAIL; | |
1146 | } | |
1147 | } | |
40978c2b | 1148 | #endif |
e33ab9aa ML |
1149 | } |
1150 | ||
eac329d2 | 1151 | if (config->dtr >= 0 || config->dsr >= 0) { |
40978c2b ML |
1152 | #ifdef USE_TERMIOX |
1153 | data->flow &= ~(DTR_FLOW | DSR_FLOW); | |
1154 | switch (config->dtr) { | |
1155 | case SP_DTR_OFF: | |
1156 | case SP_DTR_ON: | |
1157 | controlbits = TIOCM_DTR; | |
1158 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, | |
1159 | &controlbits) < 0) | |
1160 | return SP_ERR_FAIL; | |
1161 | break; | |
1162 | case SP_DTR_FLOW_CONTROL: | |
1163 | data->flow |= DTR_FLOW; | |
1164 | break; | |
1165 | default: | |
1166 | break; | |
1167 | } | |
1168 | if (config->dsr == SP_DSR_FLOW_CONTROL) | |
1169 | data->flow |= DSR_FLOW; | |
1170 | #else | |
1171 | /* DTR/DSR flow control not supported. */ | |
e33ab9aa ML |
1172 | if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL) |
1173 | return SP_ERR_ARG; | |
1174 | ||
1175 | if (config->dtr >= 0) { | |
7a6d2196 | 1176 | controlbits = TIOCM_DTR; |
e33ab9aa ML |
1177 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, |
1178 | &controlbits) < 0) | |
1179 | return SP_ERR_FAIL; | |
1180 | } | |
40978c2b | 1181 | #endif |
e33ab9aa ML |
1182 | } |
1183 | ||
1184 | if (config->xon_xoff >= 0) { | |
1185 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
1186 | switch (config->xon_xoff) { | |
1187 | case SP_XONXOFF_DISABLED: | |
1188 | break; | |
1189 | case SP_XONXOFF_IN: | |
1190 | data->term.c_iflag |= IXOFF; | |
1191 | break; | |
1192 | case SP_XONXOFF_OUT: | |
1193 | data->term.c_iflag |= IXON | IXANY; | |
1194 | break; | |
1195 | case SP_XONXOFF_INOUT: | |
1196 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
1197 | break; | |
1198 | default: | |
1199 | return SP_ERR_ARG; | |
1200 | } | |
1201 | } | |
1202 | ||
1203 | if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0) | |
1204 | return SP_ERR_FAIL; | |
31b3a8f5 MH |
1205 | |
1206 | #ifdef __APPLE__ | |
1207 | if (baud_nonstd != B0) { | |
1208 | if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1) | |
1209 | return SP_ERR_FAIL; | |
1210 | /* Set baud rates in data->term to correct, but incompatible | |
1211 | * with tcsetattr() value, same as delivered by tcgetattr(). */ | |
1212 | if (cfsetspeed(&data->term, baud_nonstd) < 0) | |
1213 | return SP_ERR_FAIL; | |
1214 | } | |
7a6d2196 ML |
1215 | #elif defined(__linux__) |
1216 | if (baud_nonstd) | |
1217 | TRY(set_baudrate(port->fd, config->baudrate)); | |
40978c2b ML |
1218 | #ifdef USE_TERMIOX |
1219 | TRY(set_flow(port->fd, data->flow)); | |
1220 | #endif | |
7a6d2196 | 1221 | #endif |
31b3a8f5 MH |
1222 | |
1223 | #endif /* !_WIN32 */ | |
e33ab9aa ML |
1224 | |
1225 | return SP_OK; | |
1226 | } | |
1227 | ||
eb6ed20f | 1228 | enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config) |
e33ab9aa | 1229 | { |
8f189c4c | 1230 | struct port_data data; |
e33ab9aa ML |
1231 | struct sp_port_config prev_config; |
1232 | ||
823690ae ML |
1233 | CHECK_PORT(); |
1234 | ||
1235 | if (!config) | |
1236 | return SP_ERR_ARG; | |
1237 | ||
e33ab9aa ML |
1238 | TRY(get_config(port, &data, &prev_config)); |
1239 | TRY(set_config(port, &data, config)); | |
74510d4b ML |
1240 | |
1241 | return SP_OK; | |
1242 | } | |
1243 | ||
eb6ed20f | 1244 | #define CREATE_SETTER(x, type) int sp_set_##x(struct sp_port *port, type x) { \ |
8f189c4c | 1245 | struct port_data data; \ |
e33ab9aa | 1246 | struct sp_port_config config; \ |
823690ae | 1247 | CHECK_PORT(); \ |
e33ab9aa ML |
1248 | TRY(get_config(port, &data, &config)); \ |
1249 | config.x = x; \ | |
1250 | TRY(set_config(port, &data, &config)); \ | |
9069c2fb ML |
1251 | return SP_OK; \ |
1252 | } | |
1253 | ||
eb6ed20f ML |
1254 | CREATE_SETTER(baudrate, int) |
1255 | CREATE_SETTER(bits, int) | |
1256 | CREATE_SETTER(parity, enum sp_parity) | |
1257 | CREATE_SETTER(stopbits, int) | |
1258 | CREATE_SETTER(rts, enum sp_rts) | |
1259 | CREATE_SETTER(cts, enum sp_cts) | |
1260 | CREATE_SETTER(dtr, enum sp_dtr) | |
1261 | CREATE_SETTER(dsr, enum sp_dsr) | |
1262 | CREATE_SETTER(xon_xoff, enum sp_xonxoff) | |
1263 | ||
1264 | enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol) | |
e33ab9aa | 1265 | { |
8f189c4c | 1266 | struct port_data data; |
e33ab9aa ML |
1267 | struct sp_port_config config; |
1268 | ||
823690ae ML |
1269 | CHECK_PORT(); |
1270 | ||
e33ab9aa ML |
1271 | TRY(get_config(port, &data, &config)); |
1272 | ||
1273 | if (flowcontrol == SP_FLOWCONTROL_XONXOFF) | |
1274 | config.xon_xoff = SP_XONXOFF_INOUT; | |
1275 | else | |
1276 | config.xon_xoff = SP_XONXOFF_DISABLED; | |
1277 | ||
1278 | if (flowcontrol == SP_FLOWCONTROL_RTSCTS) { | |
1279 | config.rts = SP_RTS_FLOW_CONTROL; | |
1280 | config.cts = SP_CTS_FLOW_CONTROL; | |
1281 | } else { | |
1282 | if (config.rts == SP_RTS_FLOW_CONTROL) | |
1283 | config.rts = SP_RTS_ON; | |
1284 | config.cts = SP_CTS_IGNORE; | |
1285 | } | |
1286 | ||
1287 | if (flowcontrol == SP_FLOWCONTROL_DTRDSR) { | |
1288 | config.dtr = SP_DTR_FLOW_CONTROL; | |
1289 | config.dsr = SP_DSR_FLOW_CONTROL; | |
1290 | } else { | |
1291 | if (config.dtr == SP_DTR_FLOW_CONTROL) | |
1292 | config.dtr = SP_DTR_ON; | |
1293 | config.dsr = SP_DSR_IGNORE; | |
1294 | } | |
1295 | ||
1296 | TRY(set_config(port, &data, &config)); | |
1297 | ||
1298 | return SP_OK; | |
1299 | } | |
1300 | ||
8cf7c697 ML |
1301 | enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signals) |
1302 | { | |
1303 | CHECK_PORT(); | |
1304 | ||
1305 | if (!signals) | |
1306 | return SP_ERR_ARG; | |
1307 | ||
1308 | *signals = 0; | |
1309 | #ifdef _WIN32 | |
1310 | DWORD bits; | |
1311 | if (GetCommModemStatus(port->hdl, &bits) == 0) | |
1312 | return SP_ERR_FAIL; | |
1313 | if (bits & MS_CTS_ON) | |
1314 | *signals |= SP_SIG_CTS; | |
1315 | if (bits & MS_DSR_ON) | |
1316 | *signals |= SP_SIG_DSR; | |
1317 | if (bits & MS_RING_ON) | |
1318 | *signals |= SP_SIG_DCD; | |
1319 | if (bits & MS_RLSD_ON) | |
1320 | *signals |= SP_SIG_RI; | |
1321 | #else | |
1322 | int bits; | |
1323 | if (ioctl(port->fd, TIOCMGET, &bits) < 0) | |
1324 | return SP_ERR_FAIL; | |
1325 | if (bits & TIOCM_CTS) | |
1326 | *signals |= SP_SIG_CTS; | |
1327 | if (bits & TIOCM_DSR) | |
1328 | *signals |= SP_SIG_DSR; | |
1329 | if (bits & TIOCM_CAR) | |
1330 | *signals |= SP_SIG_DCD; | |
1331 | if (bits & TIOCM_RNG) | |
1332 | *signals |= SP_SIG_RI; | |
1333 | #endif | |
1334 | return SP_OK; | |
1335 | } | |
1336 | ||
90cc3ee6 ML |
1337 | enum sp_return sp_start_break(struct sp_port *port) |
1338 | { | |
1339 | CHECK_PORT(); | |
1340 | #ifdef _WIN32 | |
1341 | if (SetCommBreak(port->hdl) == 0) | |
1342 | return SP_ERR_FAIL; | |
1343 | #else | |
1344 | if (ioctl(port->fd, TIOCSBRK, 1) < 0) | |
1345 | return SP_ERR_FAIL; | |
1346 | #endif | |
1347 | ||
1348 | return SP_OK; | |
1349 | } | |
1350 | ||
1351 | enum sp_return sp_end_break(struct sp_port *port) | |
1352 | { | |
1353 | CHECK_PORT(); | |
1354 | #ifdef _WIN32 | |
1355 | if (ClearCommBreak(port->hdl) == 0) | |
1356 | return SP_ERR_FAIL; | |
1357 | #else | |
1358 | if (ioctl(port->fd, TIOCCBRK, 1) < 0) | |
1359 | return SP_ERR_FAIL; | |
1360 | #endif | |
1361 | ||
1362 | return SP_OK; | |
1363 | } | |
1364 | ||
74510d4b ML |
1365 | int sp_last_error_code(void) |
1366 | { | |
1367 | #ifdef _WIN32 | |
1368 | return GetLastError(); | |
1369 | #else | |
1370 | return errno; | |
1371 | #endif | |
1372 | } | |
1373 | ||
74510d4b ML |
1374 | char *sp_last_error_message(void) |
1375 | { | |
1376 | #ifdef _WIN32 | |
1377 | LPVOID message; | |
1378 | DWORD error = GetLastError(); | |
1379 | ||
1380 | FormatMessage( | |
1381 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
1382 | FORMAT_MESSAGE_FROM_SYSTEM | | |
1383 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
1384 | NULL, | |
1385 | error, | |
1386 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
1387 | (LPTSTR) &message, | |
1388 | 0, NULL ); | |
1389 | ||
1390 | return message; | |
1391 | #else | |
1392 | return strerror(errno); | |
1393 | #endif | |
1394 | } | |
1395 | ||
74510d4b ML |
1396 | void sp_free_error_message(char *message) |
1397 | { | |
1398 | #ifdef _WIN32 | |
1399 | LocalFree(message); | |
64eec30d ML |
1400 | #else |
1401 | (void)message; | |
74510d4b ML |
1402 | #endif |
1403 | } |