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