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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> | |
863b35e6 ML |
30 | #include <stdio.h> |
31 | #include <stdarg.h> | |
74510d4b ML |
32 | #ifdef _WIN32 |
33 | #include <windows.h> | |
3b63f34d | 34 | #include <tchar.h> |
767c5ba8 | 35 | #include <stdio.h> |
74510d4b | 36 | #else |
74510d4b ML |
37 | #include <termios.h> |
38 | #include <sys/ioctl.h> | |
39 | #endif | |
3b63f34d | 40 | #ifdef __APPLE__ |
1ebf4347 ML |
41 | #include <IOKit/IOKitLib.h> |
42 | #include <IOKit/serial/IOSerialKeys.h> | |
31b3a8f5 | 43 | #include <IOKit/serial/ioss.h> |
1ebf4347 | 44 | #include <sys/syslimits.h> |
3b63f34d ML |
45 | #endif |
46 | #ifdef __linux__ | |
47 | #include "libudev.h" | |
4b97c9fc | 48 | #include "linux/serial.h" |
7a6d2196 | 49 | #include "linux_termios.h" |
40978c2b | 50 | #if defined(TCGETX) && defined(TCSETX) && defined(HAVE_TERMIOX) |
68ec29db | 51 | #define USE_TERMIOX |
40978c2b | 52 | #endif |
3b63f34d | 53 | #endif |
74510d4b | 54 | |
71c8a9b9 UH |
55 | #ifndef _WIN32 |
56 | #include "linux_termios.h" | |
57 | #endif | |
58 | ||
f6a1fb65 | 59 | #include "libserialport.h" |
74510d4b | 60 | |
8f189c4c | 61 | struct port_data { |
8094e4a0 ML |
62 | #ifdef _WIN32 |
63 | DCB dcb; | |
64 | #else | |
65 | struct termios term; | |
824dcb45 | 66 | int controlbits; |
68ec29db | 67 | int termiox_supported; |
40978c2b ML |
68 | int flow; |
69 | #endif | |
8094e4a0 ML |
70 | }; |
71 | ||
da2748bf ML |
72 | /* Standard baud rates. */ |
73 | #ifdef _WIN32 | |
74 | #define BAUD_TYPE DWORD | |
75 | #define BAUD(n) {CBR_##n, n} | |
76 | #else | |
77 | #define BAUD_TYPE speed_t | |
78 | #define BAUD(n) {B##n, n} | |
79 | #endif | |
80 | ||
81 | struct std_baudrate { | |
82 | BAUD_TYPE index; | |
83 | int value; | |
84 | }; | |
85 | ||
86 | const struct std_baudrate std_baudrates[] = { | |
87 | #ifdef _WIN32 | |
88 | /* | |
89 | * The baudrates 50/75/134/150/200/1800/230400/460800 do not seem to | |
90 | * have documented CBR_* macros. | |
91 | */ | |
92 | BAUD(110), BAUD(300), BAUD(600), BAUD(1200), BAUD(2400), BAUD(4800), | |
93 | BAUD(9600), BAUD(14400), BAUD(19200), BAUD(38400), BAUD(57600), | |
eac329d2 | 94 | BAUD(115200), BAUD(128000), BAUD(256000), |
da2748bf | 95 | #else |
eac329d2 UH |
96 | BAUD(50), BAUD(75), BAUD(110), BAUD(134), BAUD(150), BAUD(200), |
97 | BAUD(300), BAUD(600), BAUD(1200), BAUD(1800), BAUD(2400), BAUD(4800), | |
98 | BAUD(9600), BAUD(19200), BAUD(38400), BAUD(57600), BAUD(115200), | |
99 | BAUD(230400), | |
da2748bf | 100 | #if !defined(__APPLE__) && !defined(__OpenBSD__) |
eac329d2 | 101 | BAUD(460800), |
da2748bf ML |
102 | #endif |
103 | #endif | |
104 | }; | |
105 | ||
863b35e6 ML |
106 | void (*sp_debug_handler)(const char *format, ...) = sp_default_debug_handler; |
107 | ||
da2748bf ML |
108 | #define ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) |
109 | #define NUM_STD_BAUDRATES ARRAY_SIZE(std_baudrates) | |
110 | ||
7a6d2196 ML |
111 | #define TRY(x) do { int ret = x; if (ret != SP_OK) return ret; } while (0) |
112 | ||
348e23cc | 113 | /* Helper functions. */ |
eb6ed20f | 114 | static enum sp_return validate_port(struct sp_port *port); |
348e23cc | 115 | static struct sp_port **list_append(struct sp_port **list, const char *portname); |
eb6ed20f ML |
116 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, |
117 | struct sp_port_config *config); | |
118 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, | |
119 | const struct sp_port_config *config); | |
80186526 | 120 | |
eb6ed20f | 121 | enum sp_return sp_get_port_by_name(const char *portname, struct sp_port **port_ptr) |
d54e9004 ML |
122 | { |
123 | struct sp_port *port; | |
5919c913 | 124 | int len; |
d54e9004 | 125 | |
32b5ac05 ML |
126 | if (!port_ptr) |
127 | return SP_ERR_ARG; | |
128 | ||
77f262c4 ML |
129 | *port_ptr = NULL; |
130 | ||
d4babed2 | 131 | if (!portname) |
77f262c4 | 132 | return SP_ERR_ARG; |
d4babed2 | 133 | |
d54e9004 | 134 | if (!(port = malloc(sizeof(struct sp_port)))) |
77f262c4 | 135 | return SP_ERR_MEM; |
d54e9004 | 136 | |
5919c913 ML |
137 | len = strlen(portname) + 1; |
138 | ||
eac329d2 | 139 | if (!(port->name = malloc(len))) { |
d54e9004 | 140 | free(port); |
77f262c4 | 141 | return SP_ERR_MEM; |
d54e9004 ML |
142 | } |
143 | ||
144 | memcpy(port->name, portname, len); | |
145 | ||
8f471c66 ML |
146 | #ifdef _WIN32 |
147 | port->hdl = INVALID_HANDLE_VALUE; | |
148 | #else | |
149 | port->fd = -1; | |
150 | #endif | |
151 | ||
77f262c4 ML |
152 | *port_ptr = port; |
153 | ||
154 | return SP_OK; | |
d54e9004 ML |
155 | } |
156 | ||
eb6ed20f | 157 | enum sp_return sp_copy_port(const struct sp_port *port, struct sp_port **copy_ptr) |
32b5ac05 ML |
158 | { |
159 | if (!copy_ptr) | |
160 | return SP_ERR_ARG; | |
161 | ||
162 | *copy_ptr = NULL; | |
163 | ||
164 | if (!port || !port->name) | |
165 | return SP_ERR_ARG; | |
166 | ||
167 | return sp_get_port_by_name(port->name, copy_ptr); | |
168 | } | |
169 | ||
e3b2f7a4 ML |
170 | void sp_free_port(struct sp_port *port) |
171 | { | |
172 | if (!port) | |
173 | return; | |
174 | ||
175 | if (port->name) | |
176 | free(port->name); | |
177 | ||
178 | free(port); | |
179 | } | |
180 | ||
348e23cc | 181 | static struct sp_port **list_append(struct sp_port **list, const char *portname) |
3b63f34d ML |
182 | { |
183 | void *tmp; | |
184 | unsigned int count; | |
f92f1f0c | 185 | |
3b63f34d | 186 | for (count = 0; list[count]; count++); |
d54e9004 | 187 | if (!(tmp = realloc(list, sizeof(struct sp_port *) * (count + 2)))) |
3b63f34d ML |
188 | goto fail; |
189 | list = tmp; | |
77f262c4 | 190 | if (sp_get_port_by_name(portname, &list[count]) != SP_OK) |
3b63f34d | 191 | goto fail; |
db2794ce | 192 | list[count + 1] = NULL; |
3b63f34d | 193 | return list; |
f92f1f0c | 194 | |
3b63f34d ML |
195 | fail: |
196 | sp_free_port_list(list); | |
197 | return NULL; | |
198 | } | |
199 | ||
eb6ed20f | 200 | enum sp_return sp_list_ports(struct sp_port ***list_ptr) |
3b63f34d | 201 | { |
d54e9004 | 202 | struct sp_port **list; |
77f262c4 | 203 | int ret = SP_OK; |
24c1a4bb | 204 | |
d54e9004 | 205 | if (!(list = malloc(sizeof(struct sp_port **)))) |
f92f1f0c | 206 | return SP_ERR_MEM; |
24c1a4bb ML |
207 | |
208 | list[0] = NULL; | |
3b63f34d ML |
209 | |
210 | #ifdef _WIN32 | |
211 | HKEY key; | |
bdfb5b8c ML |
212 | TCHAR *value, *data; |
213 | DWORD max_value_len, max_data_size, max_data_len; | |
214 | DWORD value_len, data_size, data_len; | |
3b63f34d | 215 | DWORD type, index = 0; |
8b532d9c ML |
216 | char *name; |
217 | int name_len; | |
3b63f34d ML |
218 | |
219 | if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, _T("HARDWARE\\DEVICEMAP\\SERIALCOMM"), | |
eac329d2 | 220 | 0, KEY_QUERY_VALUE, &key) != ERROR_SUCCESS) { |
77f262c4 ML |
221 | ret = SP_ERR_FAIL; |
222 | goto out_done; | |
223 | } | |
3b63f34d | 224 | if (RegQueryInfoKey(key, NULL, NULL, NULL, NULL, NULL, NULL, NULL, |
eac329d2 | 225 | &max_value_len, &max_data_size, NULL, NULL) != ERROR_SUCCESS) { |
77f262c4 | 226 | ret = SP_ERR_FAIL; |
3b63f34d | 227 | goto out_close; |
77f262c4 | 228 | } |
3b63f34d | 229 | max_data_len = max_data_size / sizeof(TCHAR); |
eac329d2 | 230 | if (!(value = malloc((max_value_len + 1) * sizeof(TCHAR)))) { |
77f262c4 | 231 | ret = SP_ERR_MEM; |
3b63f34d | 232 | goto out_close; |
77f262c4 | 233 | } |
eac329d2 | 234 | if (!(data = malloc((max_data_len + 1) * sizeof(TCHAR)))) { |
77f262c4 | 235 | ret = SP_ERR_MEM; |
bdfb5b8c | 236 | goto out_free_value; |
77f262c4 | 237 | } |
3b63f34d | 238 | while ( |
d9573bad | 239 | value_len = max_value_len + 1, |
3b63f34d | 240 | data_size = max_data_size, |
bdfb5b8c | 241 | RegEnumValue(key, index, value, &value_len, |
3b63f34d ML |
242 | NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS) |
243 | { | |
244 | data_len = data_size / sizeof(TCHAR); | |
245 | data[data_len] = '\0'; | |
8b532d9c ML |
246 | #ifdef UNICODE |
247 | name_len = WideCharToMultiByte(CP_ACP, 0, data, -1, NULL, 0, NULL, NULL) | |
248 | #else | |
249 | name_len = data_len + 1; | |
250 | #endif | |
eac329d2 | 251 | if (!(name = malloc(name_len))) { |
77f262c4 | 252 | ret = SP_ERR_MEM; |
8b532d9c | 253 | goto out; |
77f262c4 | 254 | } |
8b532d9c ML |
255 | #ifdef UNICODE |
256 | WideCharToMultiByte(CP_ACP, 0, data, -1, name, name_len, NULL, NULL); | |
257 | #else | |
258 | strcpy(name, data); | |
259 | #endif | |
eac329d2 | 260 | if (type == REG_SZ && !(list = list_append(list, name))) { |
77f262c4 ML |
261 | ret = SP_ERR_MEM; |
262 | goto out; | |
263 | } | |
3b63f34d ML |
264 | index++; |
265 | } | |
266 | out: | |
267 | free(data); | |
bdfb5b8c ML |
268 | out_free_value: |
269 | free(value); | |
3b63f34d ML |
270 | out_close: |
271 | RegCloseKey(key); | |
77f262c4 | 272 | out_done: |
3b63f34d ML |
273 | #endif |
274 | #ifdef __APPLE__ | |
275 | mach_port_t master; | |
276 | CFMutableDictionaryRef classes; | |
277 | io_iterator_t iter; | |
278 | char *path; | |
279 | io_object_t port; | |
280 | CFTypeRef cf_path; | |
281 | Boolean result; | |
282 | ||
eac329d2 | 283 | if (IOMasterPort(MACH_PORT_NULL, &master) != KERN_SUCCESS) { |
77f262c4 ML |
284 | ret = SP_ERR_FAIL; |
285 | goto out_done; | |
286 | } | |
3b63f34d | 287 | |
eac329d2 | 288 | if (!(classes = IOServiceMatching(kIOSerialBSDServiceValue))) { |
77f262c4 ML |
289 | ret = SP_ERR_FAIL; |
290 | goto out_done; | |
291 | } | |
3b63f34d ML |
292 | |
293 | CFDictionarySetValue(classes, | |
294 | CFSTR(kIOSerialBSDTypeKey), CFSTR(kIOSerialBSDAllTypes)); | |
295 | ||
eac329d2 | 296 | if (IOServiceGetMatchingServices(master, classes, &iter) != KERN_SUCCESS) { |
77f262c4 ML |
297 | ret = SP_ERR_FAIL; |
298 | goto out_done; | |
299 | } | |
3b63f34d | 300 | |
eac329d2 | 301 | if (!(path = malloc(PATH_MAX))) { |
77f262c4 | 302 | ret = SP_ERR_MEM; |
3b63f34d | 303 | goto out_release; |
77f262c4 | 304 | } |
3b63f34d | 305 | |
1ebf4347 | 306 | while ((port = IOIteratorNext(iter))) { |
3b63f34d ML |
307 | cf_path = IORegistryEntryCreateCFProperty(port, |
308 | CFSTR(kIOCalloutDeviceKey), kCFAllocatorDefault, 0); | |
309 | if (cf_path) { | |
310 | result = CFStringGetCString(cf_path, | |
311 | path, PATH_MAX, kCFStringEncodingASCII); | |
312 | CFRelease(cf_path); | |
eac329d2 | 313 | if (result && !(list = list_append(list, path))) { |
77f262c4 ML |
314 | ret = SP_ERR_MEM; |
315 | IOObjectRelease(port); | |
316 | goto out; | |
317 | } | |
3b63f34d ML |
318 | } |
319 | IOObjectRelease(port); | |
320 | } | |
3b63f34d ML |
321 | out: |
322 | free(path); | |
323 | out_release: | |
324 | IOObjectRelease(iter); | |
77f262c4 | 325 | out_done: |
3b63f34d ML |
326 | #endif |
327 | #ifdef __linux__ | |
328 | struct udev *ud; | |
329 | struct udev_enumerate *ud_enumerate; | |
330 | struct udev_list_entry *ud_list; | |
331 | struct udev_list_entry *ud_entry; | |
332 | const char *path; | |
08fe0bdb | 333 | struct udev_device *ud_dev, *ud_parent; |
3b63f34d | 334 | const char *name; |
4b97c9fc ML |
335 | const char *driver; |
336 | int fd, ioctl_result; | |
337 | struct serial_struct serial_info; | |
3b63f34d ML |
338 | |
339 | ud = udev_new(); | |
340 | ud_enumerate = udev_enumerate_new(ud); | |
341 | udev_enumerate_add_match_subsystem(ud_enumerate, "tty"); | |
342 | udev_enumerate_scan_devices(ud_enumerate); | |
343 | ud_list = udev_enumerate_get_list_entry(ud_enumerate); | |
eac329d2 | 344 | udev_list_entry_foreach(ud_entry, ud_list) { |
3b63f34d ML |
345 | path = udev_list_entry_get_name(ud_entry); |
346 | ud_dev = udev_device_new_from_syspath(ud, path); | |
08fe0bdb ML |
347 | /* If there is no parent device, this is a virtual tty. */ |
348 | ud_parent = udev_device_get_parent(ud_dev); | |
eac329d2 | 349 | if (ud_parent == NULL) { |
08fe0bdb ML |
350 | udev_device_unref(ud_dev); |
351 | continue; | |
352 | } | |
3b63f34d | 353 | name = udev_device_get_devnode(ud_dev); |
4b97c9fc ML |
354 | /* The serial8250 driver has a hardcoded number of ports. |
355 | * The only way to tell which actually exist on a given system | |
356 | * is to try to open them and make an ioctl call. */ | |
357 | driver = udev_device_get_driver(ud_parent); | |
eac329d2 | 358 | if (driver && !strcmp(driver, "serial8250")) { |
4b97c9fc ML |
359 | if ((fd = open(name, O_RDWR | O_NONBLOCK | O_NOCTTY)) < 0) |
360 | goto skip; | |
361 | ioctl_result = ioctl(fd, TIOCGSERIAL, &serial_info); | |
362 | close(fd); | |
363 | if (ioctl_result != 0) | |
364 | goto skip; | |
365 | if (serial_info.type == PORT_UNKNOWN) | |
366 | goto skip; | |
367 | } | |
348e23cc | 368 | list = list_append(list, name); |
4b97c9fc | 369 | skip: |
3b63f34d | 370 | udev_device_unref(ud_dev); |
eac329d2 | 371 | if (!list) { |
77f262c4 | 372 | ret = SP_ERR_MEM; |
3b63f34d | 373 | goto out; |
77f262c4 | 374 | } |
3b63f34d ML |
375 | } |
376 | out: | |
377 | udev_enumerate_unref(ud_enumerate); | |
378 | udev_unref(ud); | |
3b63f34d | 379 | #endif |
77f262c4 | 380 | |
eac329d2 | 381 | if (ret == SP_OK) { |
77f262c4 | 382 | *list_ptr = list; |
eac329d2 | 383 | } else { |
77f262c4 ML |
384 | if (list) |
385 | sp_free_port_list(list); | |
77f262c4 ML |
386 | *list_ptr = NULL; |
387 | } | |
388 | ||
389 | return ret; | |
3b63f34d ML |
390 | } |
391 | ||
d54e9004 | 392 | void sp_free_port_list(struct sp_port **list) |
3b63f34d ML |
393 | { |
394 | unsigned int i; | |
f92f1f0c | 395 | |
3b63f34d | 396 | for (i = 0; list[i]; i++) |
e3b2f7a4 | 397 | sp_free_port(list[i]); |
3b63f34d ML |
398 | free(list); |
399 | } | |
400 | ||
eb6ed20f | 401 | static enum sp_return validate_port(struct sp_port *port) |
74510d4b ML |
402 | { |
403 | if (port == NULL) | |
404 | return 0; | |
405 | #ifdef _WIN32 | |
406 | if (port->hdl == INVALID_HANDLE_VALUE) | |
407 | return 0; | |
408 | #else | |
409 | if (port->fd < 0) | |
410 | return 0; | |
411 | #endif | |
412 | return 1; | |
413 | } | |
414 | ||
348e23cc | 415 | #define CHECK_PORT() do { if (!validate_port(port)) return SP_ERR_ARG; } while (0) |
74510d4b | 416 | |
eb6ed20f | 417 | enum sp_return sp_open(struct sp_port *port, enum sp_mode flags) |
74510d4b ML |
418 | { |
419 | if (!port) | |
420 | return SP_ERR_ARG; | |
421 | ||
74510d4b ML |
422 | #ifdef _WIN32 |
423 | DWORD desired_access = 0, flags_and_attributes = 0; | |
99945a1f ML |
424 | char *escaped_port_name; |
425 | ||
426 | /* Prefix port name with '\\.\' to work with ports above COM9. */ | |
427 | if (!(escaped_port_name = malloc(strlen(port->name + 5)))) | |
428 | return SP_ERR_MEM; | |
429 | sprintf(escaped_port_name, "\\\\.\\%s", port->name); | |
430 | ||
74510d4b | 431 | /* Map 'flags' to the OS-specific settings. */ |
74510d4b | 432 | flags_and_attributes = FILE_ATTRIBUTE_NORMAL; |
a036341b ML |
433 | if (flags & SP_MODE_READ) |
434 | desired_access |= GENERIC_READ; | |
435 | if (flags & SP_MODE_WRITE) | |
74510d4b ML |
436 | desired_access |= GENERIC_WRITE; |
437 | if (flags & SP_MODE_NONBLOCK) | |
438 | flags_and_attributes |= FILE_FLAG_OVERLAPPED; | |
439 | ||
99945a1f | 440 | port->hdl = CreateFile(escaped_port_name, desired_access, 0, 0, |
74510d4b | 441 | OPEN_EXISTING, flags_and_attributes, 0); |
99945a1f ML |
442 | |
443 | free(escaped_port_name); | |
444 | ||
74510d4b ML |
445 | if (port->hdl == INVALID_HANDLE_VALUE) |
446 | return SP_ERR_FAIL; | |
447 | #else | |
448 | int flags_local = 0; | |
8f189c4c | 449 | struct port_data data; |
e33ab9aa ML |
450 | struct sp_port_config config; |
451 | int ret; | |
f92f1f0c | 452 | |
74510d4b | 453 | /* Map 'flags' to the OS-specific settings. */ |
a036341b | 454 | if (flags & (SP_MODE_READ | SP_MODE_WRITE)) |
74510d4b | 455 | flags_local |= O_RDWR; |
a036341b | 456 | else if (flags & SP_MODE_READ) |
74510d4b | 457 | flags_local |= O_RDONLY; |
a036341b ML |
458 | else if (flags & SP_MODE_WRITE) |
459 | flags_local |= O_WRONLY; | |
74510d4b ML |
460 | if (flags & SP_MODE_NONBLOCK) |
461 | flags_local |= O_NONBLOCK; | |
462 | ||
463 | if ((port->fd = open(port->name, flags_local)) < 0) | |
464 | return SP_ERR_FAIL; | |
9cb98459 | 465 | |
e33ab9aa ML |
466 | ret = get_config(port, &data, &config); |
467 | ||
eac329d2 | 468 | if (ret < 0) { |
e33ab9aa ML |
469 | sp_close(port); |
470 | return ret; | |
471 | } | |
9cb98459 ML |
472 | |
473 | /* Turn off all serial port cooking. */ | |
474 | data.term.c_iflag &= ~(ISTRIP | INLCR | ICRNL); | |
475 | data.term.c_oflag &= ~(ONLCR | OCRNL | ONOCR); | |
476 | #if !defined(__FreeBSD__) && !defined(__OpenBSD__) && !defined(__NetBSD__) | |
477 | data.term.c_oflag &= ~OFILL; | |
478 | #endif | |
479 | /* Disable canonical mode, and don't echo input characters. */ | |
480 | data.term.c_lflag &= ~(ICANON | ECHO); | |
481 | ||
482 | /* Ignore modem status lines; enable receiver */ | |
483 | data.term.c_cflag |= (CLOCAL | CREAD); | |
484 | ||
e33ab9aa ML |
485 | ret = set_config(port, &data, &config); |
486 | ||
eac329d2 | 487 | if (ret < 0) { |
e33ab9aa ML |
488 | sp_close(port); |
489 | return ret; | |
490 | } | |
74510d4b ML |
491 | #endif |
492 | ||
493 | return SP_OK; | |
494 | } | |
495 | ||
eb6ed20f | 496 | enum sp_return sp_close(struct sp_port *port) |
74510d4b ML |
497 | { |
498 | CHECK_PORT(); | |
499 | ||
500 | #ifdef _WIN32 | |
501 | /* Returns non-zero upon success, 0 upon failure. */ | |
502 | if (CloseHandle(port->hdl) == 0) | |
503 | return SP_ERR_FAIL; | |
8f471c66 | 504 | port->hdl = INVALID_HANDLE_VALUE; |
74510d4b ML |
505 | #else |
506 | /* Returns 0 upon success, -1 upon failure. */ | |
507 | if (close(port->fd) == -1) | |
508 | return SP_ERR_FAIL; | |
8f471c66 | 509 | port->fd = -1; |
74510d4b ML |
510 | #endif |
511 | ||
512 | return SP_OK; | |
513 | } | |
514 | ||
fd8fd11a | 515 | enum sp_return sp_flush(struct sp_port *port, enum sp_buffer buffers) |
74510d4b ML |
516 | { |
517 | CHECK_PORT(); | |
518 | ||
519 | #ifdef _WIN32 | |
fd8fd11a ML |
520 | DWORD flags = 0; |
521 | if (buffers & SP_BUF_INPUT) | |
522 | flags |= PURGE_RXCLEAR; | |
523 | if (buffers & SP_BUF_OUTPUT) | |
524 | flags |= PURGE_TXCLEAR; | |
525 | ||
74510d4b | 526 | /* Returns non-zero upon success, 0 upon failure. */ |
fd8fd11a | 527 | if (PurgeComm(port->hdl, flags) == 0) |
74510d4b ML |
528 | return SP_ERR_FAIL; |
529 | #else | |
fd8fd11a ML |
530 | int flags = 0; |
531 | if (buffers & SP_BUF_BOTH) | |
532 | flags = TCIOFLUSH; | |
533 | else if (buffers & SP_BUF_INPUT) | |
534 | flags = TCIFLUSH; | |
82f424e6 | 535 | else if (buffers & SP_BUF_OUTPUT) |
fd8fd11a ML |
536 | flags = TCOFLUSH; |
537 | ||
74510d4b | 538 | /* Returns 0 upon success, -1 upon failure. */ |
fd8fd11a | 539 | if (tcflush(port->fd, flags) < 0) |
74510d4b ML |
540 | return SP_ERR_FAIL; |
541 | #endif | |
542 | return SP_OK; | |
543 | } | |
544 | ||
69a3739c ML |
545 | enum sp_return sp_drain(struct sp_port *port) |
546 | { | |
547 | CHECK_PORT(); | |
548 | ||
549 | #ifdef _WIN32 | |
550 | /* Returns non-zero upon success, 0 upon failure. */ | |
551 | if (FlushFileBuffers(port->hdl) == 0) | |
552 | return SP_ERR_FAIL; | |
553 | #else | |
554 | /* Returns 0 upon success, -1 upon failure. */ | |
555 | if (tcdrain(port->fd) < 0) | |
556 | return SP_ERR_FAIL; | |
557 | #endif | |
558 | ||
559 | return SP_OK; | |
560 | } | |
561 | ||
eb6ed20f | 562 | enum sp_return sp_write(struct sp_port *port, const void *buf, size_t count) |
74510d4b ML |
563 | { |
564 | CHECK_PORT(); | |
565 | ||
566 | if (!buf) | |
567 | return SP_ERR_ARG; | |
568 | ||
569 | #ifdef _WIN32 | |
570 | DWORD written = 0; | |
f92f1f0c | 571 | |
74510d4b ML |
572 | /* Returns non-zero upon success, 0 upon failure. */ |
573 | if (WriteFile(port->hdl, buf, count, &written, NULL) == 0) | |
574 | return SP_ERR_FAIL; | |
575 | return written; | |
576 | #else | |
577 | /* Returns the number of bytes written, or -1 upon failure. */ | |
578 | ssize_t written = write(port->fd, buf, count); | |
f92f1f0c | 579 | |
74510d4b ML |
580 | if (written < 0) |
581 | return SP_ERR_FAIL; | |
582 | else | |
f92f1f0c | 583 | return written; |
74510d4b ML |
584 | #endif |
585 | } | |
586 | ||
eb6ed20f | 587 | enum sp_return sp_read(struct sp_port *port, void *buf, size_t count) |
74510d4b ML |
588 | { |
589 | CHECK_PORT(); | |
590 | ||
591 | if (!buf) | |
592 | return SP_ERR_ARG; | |
593 | ||
594 | #ifdef _WIN32 | |
595 | DWORD bytes_read = 0; | |
f92f1f0c | 596 | |
74510d4b ML |
597 | /* Returns non-zero upon success, 0 upon failure. */ |
598 | if (ReadFile(port->hdl, buf, count, &bytes_read, NULL) == 0) | |
599 | return SP_ERR_FAIL; | |
600 | return bytes_read; | |
601 | #else | |
602 | ssize_t bytes_read; | |
f92f1f0c | 603 | |
74510d4b ML |
604 | /* Returns the number of bytes read, or -1 upon failure. */ |
605 | if ((bytes_read = read(port->fd, buf, count)) < 0) | |
606 | return SP_ERR_FAIL; | |
607 | return bytes_read; | |
608 | #endif | |
609 | } | |
610 | ||
7a6d2196 ML |
611 | #ifdef __linux__ |
612 | static enum sp_return get_baudrate(int fd, int *baudrate) | |
613 | { | |
614 | void *data; | |
615 | ||
616 | if (!(data = malloc(get_termios_size()))) | |
617 | return SP_ERR_MEM; | |
618 | ||
8d43110a ML |
619 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { |
620 | free(data); | |
7a6d2196 | 621 | return SP_ERR_FAIL; |
8d43110a | 622 | } |
7a6d2196 ML |
623 | |
624 | *baudrate = get_termios_speed(data); | |
625 | ||
8d43110a ML |
626 | free(data); |
627 | ||
7a6d2196 ML |
628 | return SP_OK; |
629 | } | |
630 | ||
631 | static enum sp_return set_baudrate(int fd, int baudrate) | |
632 | { | |
633 | void *data; | |
634 | ||
635 | if (!(data = malloc(get_termios_size()))) | |
636 | return SP_ERR_MEM; | |
637 | ||
8d43110a ML |
638 | if (ioctl(fd, get_termios_get_ioctl(), data) < 0) { |
639 | free(data); | |
7a6d2196 | 640 | return SP_ERR_FAIL; |
8d43110a | 641 | } |
7a6d2196 ML |
642 | |
643 | set_termios_speed(data, baudrate); | |
644 | ||
8d43110a ML |
645 | if (ioctl(fd, get_termios_set_ioctl(), data) < 0) { |
646 | free(data); | |
7a6d2196 | 647 | return SP_ERR_FAIL; |
8d43110a ML |
648 | } |
649 | ||
650 | free(data); | |
7a6d2196 ML |
651 | |
652 | return SP_OK; | |
653 | } | |
40978c2b ML |
654 | |
655 | #ifdef USE_TERMIOX | |
656 | static enum sp_return get_flow(int fd, int *flow) | |
657 | { | |
658 | void *data; | |
659 | ||
660 | if (!(data = malloc(get_termiox_size()))) | |
661 | return SP_ERR_MEM; | |
662 | ||
8d43110a ML |
663 | if (ioctl(fd, TCGETX, data) < 0) { |
664 | free(data); | |
40978c2b | 665 | return SP_ERR_FAIL; |
8d43110a | 666 | } |
40978c2b ML |
667 | |
668 | *flow = get_termiox_flow(data); | |
669 | ||
8d43110a ML |
670 | free(data); |
671 | ||
40978c2b ML |
672 | return SP_OK; |
673 | } | |
674 | ||
675 | static enum sp_return set_flow(int fd, int flow) | |
676 | { | |
677 | void *data; | |
678 | ||
679 | if (!(data = malloc(get_termiox_size()))) | |
680 | return SP_ERR_MEM; | |
681 | ||
8d43110a ML |
682 | if (ioctl(fd, TCGETX, data) < 0) { |
683 | free(data); | |
40978c2b | 684 | return SP_ERR_FAIL; |
8d43110a | 685 | } |
40978c2b ML |
686 | |
687 | set_termiox_flow(data, flow); | |
688 | ||
8d43110a ML |
689 | if (ioctl(fd, TCSETX, data) < 0) { |
690 | free(data); | |
40978c2b | 691 | return SP_ERR_FAIL; |
8d43110a ML |
692 | } |
693 | ||
694 | free(data); | |
40978c2b ML |
695 | |
696 | return SP_OK; | |
697 | } | |
698 | #endif /* USE_TERMIOX */ | |
699 | #endif /* __linux__ */ | |
7a6d2196 | 700 | |
eb6ed20f ML |
701 | static enum sp_return get_config(struct sp_port *port, struct port_data *data, |
702 | struct sp_port_config *config) | |
8094e4a0 | 703 | { |
da2748bf | 704 | unsigned int i; |
cbf628c7 | 705 | |
8094e4a0 | 706 | #ifdef _WIN32 |
e33ab9aa | 707 | if (!GetCommState(port->hdl, &data->dcb)) |
d514a26f | 708 | return SP_ERR_FAIL; |
8094e4a0 | 709 | |
067417af | 710 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
e33ab9aa | 711 | if (data->dcb.BaudRate == std_baudrates[i].index) { |
067417af ML |
712 | config->baudrate = std_baudrates[i].value; |
713 | break; | |
714 | } | |
715 | } | |
716 | ||
717 | if (i == NUM_STD_BAUDRATES) | |
718 | /* BaudRate field can be either an index or a custom baud rate. */ | |
e33ab9aa | 719 | config->baudrate = data->dcb.BaudRate; |
067417af | 720 | |
e33ab9aa | 721 | config->bits = data->dcb.ByteSize; |
067417af | 722 | |
e33ab9aa ML |
723 | if (data->dcb.fParity) |
724 | switch (data->dcb.Parity) { | |
067417af ML |
725 | case NOPARITY: |
726 | config->parity = SP_PARITY_NONE; | |
727 | break; | |
728 | case EVENPARITY: | |
729 | config->parity = SP_PARITY_EVEN; | |
730 | break; | |
731 | case ODDPARITY: | |
732 | config->parity = SP_PARITY_ODD; | |
733 | break; | |
734 | default: | |
735 | config->parity = -1; | |
736 | } | |
737 | else | |
738 | config->parity = SP_PARITY_NONE; | |
739 | ||
e33ab9aa | 740 | switch (data->dcb.StopBits) { |
067417af ML |
741 | case ONESTOPBIT: |
742 | config->stopbits = 1; | |
743 | break; | |
744 | case TWOSTOPBITS: | |
745 | config->stopbits = 2; | |
746 | break; | |
747 | default: | |
748 | config->stopbits = -1; | |
749 | } | |
750 | ||
e33ab9aa | 751 | switch (data->dcb.fRtsControl) { |
eac329d2 UH |
752 | case RTS_CONTROL_DISABLE: |
753 | config->rts = SP_RTS_OFF; | |
754 | break; | |
755 | case RTS_CONTROL_ENABLE: | |
756 | config->rts = SP_RTS_ON; | |
757 | break; | |
758 | case RTS_CONTROL_HANDSHAKE: | |
759 | config->rts = SP_RTS_FLOW_CONTROL; | |
760 | break; | |
761 | default: | |
762 | config->rts = -1; | |
067417af ML |
763 | } |
764 | ||
e33ab9aa | 765 | config->cts = data->dcb.fOutxCtsFlow ? SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; |
067417af | 766 | |
e33ab9aa | 767 | switch (data->dcb.fDtrControl) { |
eac329d2 UH |
768 | case DTR_CONTROL_DISABLE: |
769 | config->dtr = SP_DTR_OFF; | |
770 | break; | |
771 | case DTR_CONTROL_ENABLE: | |
772 | config->dtr = SP_DTR_ON; | |
773 | break; | |
774 | case DTR_CONTROL_HANDSHAKE: | |
775 | config->dtr = SP_DTR_FLOW_CONTROL; | |
776 | break; | |
777 | default: | |
778 | config->dtr = -1; | |
067417af ML |
779 | } |
780 | ||
e33ab9aa ML |
781 | config->dsr = data->dcb.fOutxDsrFlow ? SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; |
782 | ||
c6754b45 ML |
783 | if (data->dcb.fInX) { |
784 | if (data->dcb.fOutX) | |
785 | config->xon_xoff = SP_XONXOFF_INOUT; | |
786 | else | |
787 | config->xon_xoff = SP_XONXOFF_IN; | |
788 | } else { | |
789 | if (data->dcb.fOutX) | |
790 | config->xon_xoff = SP_XONXOFF_OUT; | |
791 | else | |
792 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
793 | } | |
794 | ||
e33ab9aa ML |
795 | #else // !_WIN32 |
796 | ||
797 | if (tcgetattr(port->fd, &data->term) < 0) | |
798 | return SP_ERR_FAIL; | |
799 | ||
800 | if (ioctl(port->fd, TIOCMGET, &data->controlbits) < 0) | |
801 | return SP_ERR_FAIL; | |
40978c2b ML |
802 | |
803 | #ifdef USE_TERMIOX | |
68ec29db ML |
804 | int ret = get_flow(port->fd, &data->flow); |
805 | ||
806 | if (ret == SP_ERR_FAIL && errno == EINVAL) | |
807 | data->termiox_supported = 0; | |
808 | else if (ret < 0) | |
809 | return ret; | |
810 | else | |
811 | data->termiox_supported = 1; | |
812 | #else | |
813 | data->termiox_supported = 0; | |
40978c2b ML |
814 | #endif |
815 | ||
067417af | 816 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
e33ab9aa | 817 | if (cfgetispeed(&data->term) == std_baudrates[i].index) { |
067417af ML |
818 | config->baudrate = std_baudrates[i].value; |
819 | break; | |
820 | } | |
821 | } | |
822 | ||
31b3a8f5 MH |
823 | if (i == NUM_STD_BAUDRATES) { |
824 | #ifdef __APPLE__ | |
825 | config->baudrate = (int)data->term.c_ispeed; | |
7a6d2196 ML |
826 | #elif defined(__linux__) |
827 | TRY(get_baudrate(port->fd, &config->baudrate)); | |
31b3a8f5 | 828 | #else |
067417af | 829 | config->baudrate = -1; |
31b3a8f5 MH |
830 | #endif |
831 | } | |
067417af | 832 | |
e33ab9aa | 833 | switch (data->term.c_cflag & CSIZE) { |
067417af ML |
834 | case CS8: |
835 | config->bits = 8; | |
836 | break; | |
837 | case CS7: | |
838 | config->bits = 7; | |
839 | break; | |
840 | case CS6: | |
841 | config->bits = 6; | |
842 | break; | |
843 | case CS5: | |
844 | config->bits = 5; | |
845 | break; | |
846 | default: | |
847 | config->bits = -1; | |
848 | } | |
849 | ||
e33ab9aa | 850 | if (!(data->term.c_cflag & PARENB) && (data->term.c_iflag & IGNPAR)) |
067417af | 851 | config->parity = SP_PARITY_NONE; |
e33ab9aa | 852 | else if (!(data->term.c_cflag & PARENB) || (data->term.c_iflag & IGNPAR)) |
067417af ML |
853 | config->parity = -1; |
854 | else | |
e33ab9aa | 855 | config->parity = (data->term.c_cflag & PARODD) ? SP_PARITY_ODD : SP_PARITY_EVEN; |
067417af | 856 | |
e33ab9aa | 857 | config->stopbits = (data->term.c_cflag & CSTOPB) ? 2 : 1; |
067417af | 858 | |
e33ab9aa | 859 | if (data->term.c_cflag & CRTSCTS) { |
067417af ML |
860 | config->rts = SP_RTS_FLOW_CONTROL; |
861 | config->cts = SP_CTS_FLOW_CONTROL; | |
862 | } else { | |
68ec29db | 863 | if (data->termiox_supported && data->flow & RTS_FLOW) |
40978c2b ML |
864 | config->rts = SP_RTS_FLOW_CONTROL; |
865 | else | |
866 | config->rts = (data->controlbits & TIOCM_RTS) ? SP_RTS_ON : SP_RTS_OFF; | |
867 | ||
68ec29db ML |
868 | config->cts = (data->termiox_supported && data->flow & CTS_FLOW) ? |
869 | SP_CTS_FLOW_CONTROL : SP_CTS_IGNORE; | |
067417af ML |
870 | } |
871 | ||
68ec29db | 872 | if (data->termiox_supported && data->flow & DTR_FLOW) |
40978c2b ML |
873 | config->dtr = SP_DTR_FLOW_CONTROL; |
874 | else | |
875 | config->dtr = (data->controlbits & TIOCM_DTR) ? SP_DTR_ON : SP_DTR_OFF; | |
876 | ||
68ec29db ML |
877 | config->dsr = (data->termiox_supported && data->flow & DSR_FLOW) ? |
878 | SP_DSR_FLOW_CONTROL : SP_DSR_IGNORE; | |
705bdc69 | 879 | |
e29b93a5 ML |
880 | if (data->term.c_iflag & IXOFF) { |
881 | if (data->term.c_iflag & IXON) | |
882 | config->xon_xoff = SP_XONXOFF_INOUT; | |
883 | else | |
884 | config->xon_xoff = SP_XONXOFF_IN; | |
885 | } else { | |
886 | if (data->term.c_iflag & IXON) | |
887 | config->xon_xoff = SP_XONXOFF_OUT; | |
888 | else | |
889 | config->xon_xoff = SP_XONXOFF_DISABLED; | |
890 | } | |
067417af ML |
891 | #endif |
892 | ||
893 | return SP_OK; | |
894 | } | |
895 | ||
7a6d2196 | 896 | static enum sp_return set_config(struct sp_port *port, struct port_data *data, |
eb6ed20f | 897 | const struct sp_port_config *config) |
18fc2dd1 | 898 | { |
e33ab9aa | 899 | unsigned int i; |
31b3a8f5 MH |
900 | #ifdef __APPLE__ |
901 | BAUD_TYPE baud_nonstd; | |
902 | ||
903 | baud_nonstd = B0; | |
904 | #endif | |
7a6d2196 ML |
905 | #ifdef __linux__ |
906 | int baud_nonstd = 0; | |
907 | #endif | |
18fc2dd1 | 908 | |
e33ab9aa | 909 | #ifdef _WIN32 |
eac329d2 | 910 | if (config->baudrate >= 0) { |
e33ab9aa ML |
911 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
912 | if (config->baudrate == std_baudrates[i].value) { | |
913 | data->dcb.BaudRate = std_baudrates[i].index; | |
914 | break; | |
915 | } | |
916 | } | |
18fc2dd1 | 917 | |
e33ab9aa ML |
918 | if (i == NUM_STD_BAUDRATES) |
919 | data->dcb.BaudRate = config->baudrate; | |
920 | } | |
18fc2dd1 | 921 | |
e33ab9aa ML |
922 | if (config->bits >= 0) |
923 | data->dcb.ByteSize = config->bits; | |
924 | ||
925 | if (config->parity >= 0) { | |
926 | switch (config->parity) { | |
927 | /* Note: There's also SPACEPARITY, MARKPARITY (unneeded so far). */ | |
928 | case SP_PARITY_NONE: | |
929 | data->dcb.Parity = NOPARITY; | |
930 | break; | |
931 | case SP_PARITY_EVEN: | |
932 | data->dcb.Parity = EVENPARITY; | |
933 | break; | |
934 | case SP_PARITY_ODD: | |
935 | data->dcb.Parity = ODDPARITY; | |
936 | break; | |
937 | default: | |
938 | return SP_ERR_ARG; | |
939 | } | |
18fc2dd1 ML |
940 | } |
941 | ||
e33ab9aa ML |
942 | if (config->stopbits >= 0) { |
943 | switch (config->stopbits) { | |
944 | /* Note: There's also ONE5STOPBITS == 1.5 (unneeded so far). */ | |
945 | case 1: | |
946 | data->dcb.StopBits = ONESTOPBIT; | |
947 | break; | |
948 | case 2: | |
949 | data->dcb.StopBits = TWOSTOPBITS; | |
950 | break; | |
951 | default: | |
952 | return SP_ERR_ARG; | |
953 | } | |
954 | } | |
955 | ||
956 | if (config->rts >= 0) { | |
957 | switch (config->rts) { | |
958 | case SP_RTS_OFF: | |
959 | data->dcb.fRtsControl = RTS_CONTROL_DISABLE; | |
960 | break; | |
961 | case SP_RTS_ON: | |
962 | data->dcb.fRtsControl = RTS_CONTROL_ENABLE; | |
963 | break; | |
964 | case SP_RTS_FLOW_CONTROL: | |
965 | data->dcb.fRtsControl = RTS_CONTROL_HANDSHAKE; | |
966 | break; | |
967 | default: | |
968 | return SP_ERR_ARG; | |
969 | } | |
970 | } | |
971 | ||
972 | if (config->cts >= 0) { | |
973 | switch (config->cts) { | |
974 | case SP_CTS_IGNORE: | |
975 | data->dcb.fOutxCtsFlow = FALSE; | |
976 | break; | |
977 | case SP_CTS_FLOW_CONTROL: | |
978 | data->dcb.fOutxCtsFlow = TRUE; | |
979 | break; | |
980 | default: | |
981 | return SP_ERR_ARG; | |
982 | } | |
983 | } | |
984 | ||
985 | if (config->dtr >= 0) { | |
986 | switch (config->dtr) { | |
987 | case SP_DTR_OFF: | |
988 | data->dcb.fDtrControl = DTR_CONTROL_DISABLE; | |
989 | break; | |
990 | case SP_DTR_ON: | |
991 | data->dcb.fDtrControl = DTR_CONTROL_ENABLE; | |
992 | break; | |
993 | case SP_DTR_FLOW_CONTROL: | |
994 | data->dcb.fDtrControl = DTR_CONTROL_HANDSHAKE; | |
995 | break; | |
996 | default: | |
997 | return SP_ERR_ARG; | |
998 | } | |
999 | } | |
1000 | ||
1001 | if (config->dsr >= 0) { | |
1002 | switch (config->dsr) { | |
1003 | case SP_DSR_IGNORE: | |
1004 | data->dcb.fOutxDsrFlow = FALSE; | |
1005 | break; | |
1006 | case SP_DSR_FLOW_CONTROL: | |
1007 | data->dcb.fOutxDsrFlow = TRUE; | |
1008 | break; | |
1009 | default: | |
1010 | return SP_ERR_ARG; | |
1011 | } | |
18fc2dd1 ML |
1012 | } |
1013 | ||
e33ab9aa ML |
1014 | if (config->xon_xoff >= 0) { |
1015 | switch (config->xon_xoff) { | |
1016 | case SP_XONXOFF_DISABLED: | |
1017 | data->dcb.fInX = FALSE; | |
1018 | data->dcb.fOutX = FALSE; | |
1019 | break; | |
1020 | case SP_XONXOFF_IN: | |
1021 | data->dcb.fInX = TRUE; | |
1022 | data->dcb.fOutX = FALSE; | |
1023 | break; | |
1024 | case SP_XONXOFF_OUT: | |
1025 | data->dcb.fInX = FALSE; | |
1026 | data->dcb.fOutX = TRUE; | |
1027 | break; | |
1028 | case SP_XONXOFF_INOUT: | |
1029 | data->dcb.fInX = TRUE; | |
1030 | data->dcb.fOutX = TRUE; | |
1031 | break; | |
1032 | default: | |
1033 | return SP_ERR_ARG; | |
1034 | } | |
1035 | } | |
1036 | ||
1037 | if (!SetCommState(port->hdl, &data->dcb)) | |
1038 | return SP_ERR_FAIL; | |
1039 | ||
31b3a8f5 | 1040 | #else /* !_WIN32 */ |
e33ab9aa | 1041 | |
7a6d2196 ML |
1042 | int controlbits; |
1043 | ||
eac329d2 | 1044 | if (config->baudrate >= 0) { |
e33ab9aa ML |
1045 | for (i = 0; i < NUM_STD_BAUDRATES; i++) { |
1046 | if (config->baudrate == std_baudrates[i].value) { | |
1047 | if (cfsetospeed(&data->term, std_baudrates[i].index) < 0) | |
1048 | return SP_ERR_FAIL; | |
1049 | ||
1050 | if (cfsetispeed(&data->term, std_baudrates[i].index) < 0) | |
1051 | return SP_ERR_FAIL; | |
1052 | break; | |
1053 | } | |
1054 | } | |
1055 | ||
31b3a8f5 MH |
1056 | /* Non-standard baud rate */ |
1057 | if (i == NUM_STD_BAUDRATES) { | |
1058 | #ifdef __APPLE__ | |
24abdb68 | 1059 | /* Set "dummy" baud rate. */ |
31b3a8f5 MH |
1060 | if (cfsetspeed(&data->term, B9600) < 0) |
1061 | return SP_ERR_FAIL; | |
1062 | baud_nonstd = config->baudrate; | |
7a6d2196 ML |
1063 | #elif defined(__linux__) |
1064 | baud_nonstd = 1; | |
31b3a8f5 | 1065 | #else |
6aabf62a | 1066 | return SP_ERR_SUPP; |
31b3a8f5 MH |
1067 | #endif |
1068 | } | |
e33ab9aa ML |
1069 | } |
1070 | ||
1071 | if (config->bits >= 0) { | |
1072 | data->term.c_cflag &= ~CSIZE; | |
1073 | switch (config->bits) { | |
1074 | case 8: | |
1075 | data->term.c_cflag |= CS8; | |
1076 | break; | |
1077 | case 7: | |
1078 | data->term.c_cflag |= CS7; | |
1079 | break; | |
1080 | case 6: | |
1081 | data->term.c_cflag |= CS6; | |
1082 | break; | |
23922313 UH |
1083 | case 5: |
1084 | data->term.c_cflag |= CS5; | |
1085 | break; | |
e33ab9aa ML |
1086 | default: |
1087 | return SP_ERR_ARG; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | if (config->parity >= 0) { | |
1092 | data->term.c_iflag &= ~IGNPAR; | |
1093 | data->term.c_cflag &= ~(PARENB | PARODD); | |
1094 | switch (config->parity) { | |
1095 | case SP_PARITY_NONE: | |
1096 | data->term.c_iflag |= IGNPAR; | |
1097 | break; | |
1098 | case SP_PARITY_EVEN: | |
1099 | data->term.c_cflag |= PARENB; | |
1100 | break; | |
1101 | case SP_PARITY_ODD: | |
1102 | data->term.c_cflag |= PARENB | PARODD; | |
1103 | break; | |
1104 | default: | |
1105 | return SP_ERR_ARG; | |
1106 | } | |
1107 | } | |
1108 | ||
1109 | if (config->stopbits >= 0) { | |
1110 | data->term.c_cflag &= ~CSTOPB; | |
1111 | switch (config->stopbits) { | |
1112 | case 1: | |
1113 | data->term.c_cflag &= ~CSTOPB; | |
1114 | break; | |
1115 | case 2: | |
1116 | data->term.c_cflag |= CSTOPB; | |
1117 | break; | |
1118 | default: | |
1119 | return SP_ERR_ARG; | |
1120 | } | |
1121 | } | |
1122 | ||
eac329d2 | 1123 | if (config->rts >= 0 || config->cts >= 0) { |
68ec29db ML |
1124 | if (data->termiox_supported) { |
1125 | data->flow &= ~(RTS_FLOW | CTS_FLOW); | |
1126 | switch (config->rts) { | |
1127 | case SP_RTS_OFF: | |
1128 | case SP_RTS_ON: | |
1129 | controlbits = TIOCM_RTS; | |
1130 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
1131 | return SP_ERR_FAIL; | |
1132 | break; | |
1133 | case SP_RTS_FLOW_CONTROL: | |
1134 | data->flow |= RTS_FLOW; | |
1135 | break; | |
1136 | default: | |
1137 | break; | |
e33ab9aa | 1138 | } |
68ec29db ML |
1139 | if (config->cts == SP_CTS_FLOW_CONTROL) |
1140 | data->flow |= CTS_FLOW; | |
e33ab9aa | 1141 | |
68ec29db | 1142 | if (data->flow & (RTS_FLOW | CTS_FLOW)) |
e33ab9aa | 1143 | data->term.c_iflag |= CRTSCTS; |
68ec29db ML |
1144 | else |
1145 | data->term.c_iflag &= ~CRTSCTS; | |
1146 | } else { | |
1147 | /* Asymmetric use of RTS/CTS not supported. */ | |
1148 | if (data->term.c_iflag & CRTSCTS) { | |
1149 | /* Flow control can only be disabled for both RTS & CTS together. */ | |
1150 | if (config->rts >= 0 && config->rts != SP_RTS_FLOW_CONTROL) { | |
1151 | if (config->cts != SP_CTS_IGNORE) | |
6aabf62a | 1152 | return SP_ERR_SUPP; |
68ec29db ML |
1153 | } |
1154 | if (config->cts >= 0 && config->cts != SP_CTS_FLOW_CONTROL) { | |
1155 | if (config->rts <= 0 || config->rts == SP_RTS_FLOW_CONTROL) | |
6aabf62a | 1156 | return SP_ERR_SUPP; |
68ec29db | 1157 | } |
e33ab9aa | 1158 | } else { |
68ec29db ML |
1159 | /* Flow control can only be enabled for both RTS & CTS together. */ |
1160 | if (((config->rts == SP_RTS_FLOW_CONTROL) && (config->cts != SP_CTS_FLOW_CONTROL)) || | |
1161 | ((config->cts == SP_CTS_FLOW_CONTROL) && (config->rts != SP_RTS_FLOW_CONTROL))) | |
6aabf62a | 1162 | return SP_ERR_SUPP; |
68ec29db ML |
1163 | } |
1164 | ||
1165 | if (config->rts >= 0) { | |
1166 | if (config->rts == SP_RTS_FLOW_CONTROL) { | |
1167 | data->term.c_iflag |= CRTSCTS; | |
1168 | } else { | |
1169 | controlbits = TIOCM_RTS; | |
1170 | if (ioctl(port->fd, config->rts == SP_RTS_ON ? TIOCMBIS : TIOCMBIC, | |
1171 | &controlbits) < 0) | |
1172 | return SP_ERR_FAIL; | |
1173 | } | |
e33ab9aa ML |
1174 | } |
1175 | } | |
1176 | } | |
1177 | ||
eac329d2 | 1178 | if (config->dtr >= 0 || config->dsr >= 0) { |
68ec29db ML |
1179 | if (data->termiox_supported) { |
1180 | data->flow &= ~(DTR_FLOW | DSR_FLOW); | |
1181 | switch (config->dtr) { | |
1182 | case SP_DTR_OFF: | |
1183 | case SP_DTR_ON: | |
1184 | controlbits = TIOCM_DTR; | |
1185 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, &controlbits) < 0) | |
1186 | return SP_ERR_FAIL; | |
1187 | break; | |
1188 | case SP_DTR_FLOW_CONTROL: | |
1189 | data->flow |= DTR_FLOW; | |
1190 | break; | |
1191 | default: | |
1192 | break; | |
1193 | } | |
1194 | if (config->dsr == SP_DSR_FLOW_CONTROL) | |
1195 | data->flow |= DSR_FLOW; | |
1196 | } else { | |
1197 | /* DTR/DSR flow control not supported. */ | |
1198 | if (config->dtr == SP_DTR_FLOW_CONTROL || config->dsr == SP_DSR_FLOW_CONTROL) | |
6aabf62a | 1199 | return SP_ERR_SUPP; |
e33ab9aa | 1200 | |
68ec29db ML |
1201 | if (config->dtr >= 0) { |
1202 | controlbits = TIOCM_DTR; | |
1203 | if (ioctl(port->fd, config->dtr == SP_DTR_ON ? TIOCMBIS : TIOCMBIC, | |
1204 | &controlbits) < 0) | |
1205 | return SP_ERR_FAIL; | |
1206 | } | |
e33ab9aa ML |
1207 | } |
1208 | } | |
1209 | ||
1210 | if (config->xon_xoff >= 0) { | |
1211 | data->term.c_iflag &= ~(IXON | IXOFF | IXANY); | |
1212 | switch (config->xon_xoff) { | |
1213 | case SP_XONXOFF_DISABLED: | |
1214 | break; | |
1215 | case SP_XONXOFF_IN: | |
1216 | data->term.c_iflag |= IXOFF; | |
1217 | break; | |
1218 | case SP_XONXOFF_OUT: | |
1219 | data->term.c_iflag |= IXON | IXANY; | |
1220 | break; | |
1221 | case SP_XONXOFF_INOUT: | |
1222 | data->term.c_iflag |= IXON | IXOFF | IXANY; | |
1223 | break; | |
1224 | default: | |
1225 | return SP_ERR_ARG; | |
1226 | } | |
1227 | } | |
1228 | ||
1229 | if (tcsetattr(port->fd, TCSADRAIN, &data->term) < 0) | |
1230 | return SP_ERR_FAIL; | |
31b3a8f5 MH |
1231 | |
1232 | #ifdef __APPLE__ | |
1233 | if (baud_nonstd != B0) { | |
1234 | if (ioctl(port->fd, IOSSIOSPEED, &baud_nonstd) == -1) | |
1235 | return SP_ERR_FAIL; | |
1236 | /* Set baud rates in data->term to correct, but incompatible | |
1237 | * with tcsetattr() value, same as delivered by tcgetattr(). */ | |
1238 | if (cfsetspeed(&data->term, baud_nonstd) < 0) | |
1239 | return SP_ERR_FAIL; | |
1240 | } | |
7a6d2196 ML |
1241 | #elif defined(__linux__) |
1242 | if (baud_nonstd) | |
1243 | TRY(set_baudrate(port->fd, config->baudrate)); | |
40978c2b | 1244 | #ifdef USE_TERMIOX |
68ec29db ML |
1245 | if (data->termiox_supported) |
1246 | TRY(set_flow(port->fd, data->flow)); | |
40978c2b | 1247 | #endif |
7a6d2196 | 1248 | #endif |
31b3a8f5 MH |
1249 | |
1250 | #endif /* !_WIN32 */ | |
e33ab9aa ML |
1251 | |
1252 | return SP_OK; | |
1253 | } | |
1254 | ||
eb6ed20f | 1255 | enum sp_return sp_set_config(struct sp_port *port, const struct sp_port_config *config) |
e33ab9aa | 1256 | { |
8f189c4c | 1257 | struct port_data data; |
e33ab9aa ML |
1258 | struct sp_port_config prev_config; |
1259 | ||
823690ae ML |
1260 | CHECK_PORT(); |
1261 | ||
1262 | if (!config) | |
1263 | return SP_ERR_ARG; | |
1264 | ||
e33ab9aa ML |
1265 | TRY(get_config(port, &data, &prev_config)); |
1266 | TRY(set_config(port, &data, config)); | |
74510d4b ML |
1267 | |
1268 | return SP_OK; | |
1269 | } | |
1270 | ||
eb6ed20f | 1271 | #define CREATE_SETTER(x, type) int sp_set_##x(struct sp_port *port, type x) { \ |
8f189c4c | 1272 | struct port_data data; \ |
e33ab9aa | 1273 | struct sp_port_config config; \ |
823690ae | 1274 | CHECK_PORT(); \ |
e33ab9aa ML |
1275 | TRY(get_config(port, &data, &config)); \ |
1276 | config.x = x; \ | |
1277 | TRY(set_config(port, &data, &config)); \ | |
9069c2fb ML |
1278 | return SP_OK; \ |
1279 | } | |
1280 | ||
eb6ed20f ML |
1281 | CREATE_SETTER(baudrate, int) |
1282 | CREATE_SETTER(bits, int) | |
1283 | CREATE_SETTER(parity, enum sp_parity) | |
1284 | CREATE_SETTER(stopbits, int) | |
1285 | CREATE_SETTER(rts, enum sp_rts) | |
1286 | CREATE_SETTER(cts, enum sp_cts) | |
1287 | CREATE_SETTER(dtr, enum sp_dtr) | |
1288 | CREATE_SETTER(dsr, enum sp_dsr) | |
1289 | CREATE_SETTER(xon_xoff, enum sp_xonxoff) | |
1290 | ||
1291 | enum sp_return sp_set_flowcontrol(struct sp_port *port, enum sp_flowcontrol flowcontrol) | |
e33ab9aa | 1292 | { |
8f189c4c | 1293 | struct port_data data; |
e33ab9aa ML |
1294 | struct sp_port_config config; |
1295 | ||
823690ae ML |
1296 | CHECK_PORT(); |
1297 | ||
e33ab9aa ML |
1298 | TRY(get_config(port, &data, &config)); |
1299 | ||
1300 | if (flowcontrol == SP_FLOWCONTROL_XONXOFF) | |
1301 | config.xon_xoff = SP_XONXOFF_INOUT; | |
1302 | else | |
1303 | config.xon_xoff = SP_XONXOFF_DISABLED; | |
1304 | ||
1305 | if (flowcontrol == SP_FLOWCONTROL_RTSCTS) { | |
1306 | config.rts = SP_RTS_FLOW_CONTROL; | |
1307 | config.cts = SP_CTS_FLOW_CONTROL; | |
1308 | } else { | |
1309 | if (config.rts == SP_RTS_FLOW_CONTROL) | |
1310 | config.rts = SP_RTS_ON; | |
1311 | config.cts = SP_CTS_IGNORE; | |
1312 | } | |
1313 | ||
1314 | if (flowcontrol == SP_FLOWCONTROL_DTRDSR) { | |
1315 | config.dtr = SP_DTR_FLOW_CONTROL; | |
1316 | config.dsr = SP_DSR_FLOW_CONTROL; | |
1317 | } else { | |
1318 | if (config.dtr == SP_DTR_FLOW_CONTROL) | |
1319 | config.dtr = SP_DTR_ON; | |
1320 | config.dsr = SP_DSR_IGNORE; | |
1321 | } | |
1322 | ||
1323 | TRY(set_config(port, &data, &config)); | |
1324 | ||
1325 | return SP_OK; | |
1326 | } | |
1327 | ||
8cf7c697 ML |
1328 | enum sp_return sp_get_signals(struct sp_port *port, enum sp_signal *signals) |
1329 | { | |
1330 | CHECK_PORT(); | |
1331 | ||
1332 | if (!signals) | |
1333 | return SP_ERR_ARG; | |
1334 | ||
1335 | *signals = 0; | |
1336 | #ifdef _WIN32 | |
1337 | DWORD bits; | |
1338 | if (GetCommModemStatus(port->hdl, &bits) == 0) | |
1339 | return SP_ERR_FAIL; | |
1340 | if (bits & MS_CTS_ON) | |
1341 | *signals |= SP_SIG_CTS; | |
1342 | if (bits & MS_DSR_ON) | |
1343 | *signals |= SP_SIG_DSR; | |
1344 | if (bits & MS_RING_ON) | |
1345 | *signals |= SP_SIG_DCD; | |
1346 | if (bits & MS_RLSD_ON) | |
1347 | *signals |= SP_SIG_RI; | |
1348 | #else | |
1349 | int bits; | |
1350 | if (ioctl(port->fd, TIOCMGET, &bits) < 0) | |
1351 | return SP_ERR_FAIL; | |
1352 | if (bits & TIOCM_CTS) | |
1353 | *signals |= SP_SIG_CTS; | |
1354 | if (bits & TIOCM_DSR) | |
1355 | *signals |= SP_SIG_DSR; | |
1356 | if (bits & TIOCM_CAR) | |
1357 | *signals |= SP_SIG_DCD; | |
1358 | if (bits & TIOCM_RNG) | |
1359 | *signals |= SP_SIG_RI; | |
1360 | #endif | |
1361 | return SP_OK; | |
1362 | } | |
1363 | ||
90cc3ee6 ML |
1364 | enum sp_return sp_start_break(struct sp_port *port) |
1365 | { | |
1366 | CHECK_PORT(); | |
1367 | #ifdef _WIN32 | |
1368 | if (SetCommBreak(port->hdl) == 0) | |
1369 | return SP_ERR_FAIL; | |
1370 | #else | |
1371 | if (ioctl(port->fd, TIOCSBRK, 1) < 0) | |
1372 | return SP_ERR_FAIL; | |
1373 | #endif | |
1374 | ||
1375 | return SP_OK; | |
1376 | } | |
1377 | ||
1378 | enum sp_return sp_end_break(struct sp_port *port) | |
1379 | { | |
1380 | CHECK_PORT(); | |
1381 | #ifdef _WIN32 | |
1382 | if (ClearCommBreak(port->hdl) == 0) | |
1383 | return SP_ERR_FAIL; | |
1384 | #else | |
1385 | if (ioctl(port->fd, TIOCCBRK, 1) < 0) | |
1386 | return SP_ERR_FAIL; | |
1387 | #endif | |
1388 | ||
1389 | return SP_OK; | |
1390 | } | |
1391 | ||
74510d4b ML |
1392 | int sp_last_error_code(void) |
1393 | { | |
1394 | #ifdef _WIN32 | |
1395 | return GetLastError(); | |
1396 | #else | |
1397 | return errno; | |
1398 | #endif | |
1399 | } | |
1400 | ||
74510d4b ML |
1401 | char *sp_last_error_message(void) |
1402 | { | |
1403 | #ifdef _WIN32 | |
1404 | LPVOID message; | |
1405 | DWORD error = GetLastError(); | |
1406 | ||
1407 | FormatMessage( | |
1408 | FORMAT_MESSAGE_ALLOCATE_BUFFER | | |
1409 | FORMAT_MESSAGE_FROM_SYSTEM | | |
1410 | FORMAT_MESSAGE_IGNORE_INSERTS, | |
1411 | NULL, | |
1412 | error, | |
1413 | MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), | |
1414 | (LPTSTR) &message, | |
1415 | 0, NULL ); | |
1416 | ||
1417 | return message; | |
1418 | #else | |
1419 | return strerror(errno); | |
1420 | #endif | |
1421 | } | |
1422 | ||
74510d4b ML |
1423 | void sp_free_error_message(char *message) |
1424 | { | |
1425 | #ifdef _WIN32 | |
1426 | LocalFree(message); | |
64eec30d ML |
1427 | #else |
1428 | (void)message; | |
74510d4b ML |
1429 | #endif |
1430 | } | |
863b35e6 ML |
1431 | |
1432 | void sp_set_debug_handler(void (*handler)(const char *format, ...)) | |
1433 | { | |
1434 | sp_debug_handler = handler; | |
1435 | } | |
1436 | ||
1437 | void sp_default_debug_handler(const char *format, ...) | |
1438 | { | |
1439 | va_list args; | |
1440 | va_start(args, format); | |
1441 | if (getenv("LIBSERIALPORT_DEBUG")) { | |
1442 | fputs("libserialport: ", stderr); | |
1443 | vfprintf(stderr, format, args); | |
1444 | } | |
1445 | va_end(args); | |
1446 | } |