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Commit | Line | Data |
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a1bb33af UH |
1 | /* |
2 | * This file is part of the sigrok project. | |
3 | * | |
c73d2ea4 | 4 | * Copyright (C) 2010-2012 Bert Vermeulen <bert@biot.com> |
a1bb33af UH |
5 | * |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
54b38f64 | 20 | #include <string.h> |
d02a535e BV |
21 | #include <sys/types.h> |
22 | #include <sys/stat.h> | |
23 | #include <fcntl.h> | |
24 | #include <unistd.h> | |
926b866c | 25 | #ifdef _WIN32 |
a9f54bcd | 26 | #include <windows.h> |
926b866c UH |
27 | #else |
28 | #include <glob.h> | |
d02a535e | 29 | #include <termios.h> |
926b866c | 30 | #endif |
d02a535e | 31 | #include <stdlib.h> |
a1bb33af | 32 | #include <glib.h> |
45c59c8b BV |
33 | #include "libsigrok.h" |
34 | #include "libsigrok-internal.h" | |
a1bb33af | 35 | |
926b866c UH |
36 | // FIXME: Must be moved, or rather passed as function argument. |
37 | #ifdef _WIN32 | |
a0ecd83b | 38 | static HANDLE hdl; |
926b866c UH |
39 | #endif |
40 | ||
1a081ca6 | 41 | static const char *serial_port_glob[] = { |
a1bb33af UH |
42 | /* Linux */ |
43 | "/dev/ttyS*", | |
44 | "/dev/ttyUSB*", | |
45 | "/dev/ttyACM*", | |
46 | /* MacOS X */ | |
47 | "/dev/ttys*", | |
48 | "/dev/tty.USB-*", | |
49 | "/dev/tty.Modem-*", | |
986f7270 | 50 | NULL, |
a1bb33af UH |
51 | }; |
52 | ||
1a081ca6 | 53 | SR_PRIV GSList *list_serial_ports(void) |
a1bb33af | 54 | { |
2119ab03 UH |
55 | GSList *ports; |
56 | ||
926b866c UH |
57 | #ifdef _WIN32 |
58 | /* TODO */ | |
2119ab03 | 59 | ports = NULL; |
133a37bf | 60 | ports = g_slist_append(ports, g_strdup("COM1")); |
926b866c | 61 | #else |
a1bb33af | 62 | glob_t g; |
afc8e4de | 63 | unsigned int i, j; |
a1bb33af UH |
64 | |
65 | ports = NULL; | |
986f7270 | 66 | for (i = 0; serial_port_glob[i]; i++) { |
71dda106 PS |
67 | if (glob(serial_port_glob[i], 0, NULL, &g)) |
68 | continue; | |
69 | for (j = 0; j < g.gl_pathc; j++) | |
133a37bf | 70 | ports = g_slist_append(ports, g_strdup(g.gl_pathv[j])); |
71dda106 | 71 | globfree(&g); |
a1bb33af | 72 | } |
2119ab03 | 73 | #endif |
a1bb33af UH |
74 | |
75 | return ports; | |
76 | } | |
77 | ||
1a081ca6 | 78 | SR_PRIV int serial_open(const char *pathname, int flags) |
d02a535e | 79 | { |
926b866c UH |
80 | #ifdef _WIN32 |
81 | /* FIXME: Don't hardcode COM1. */ | |
82 | hdl = CreateFile("COM1", GENERIC_READ | GENERIC_WRITE, 0, 0, | |
83 | OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0); | |
84 | if (hdl == INVALID_HANDLE_VALUE) { | |
85 | /* TODO: Error handling. */ | |
86 | } | |
87 | return 0; | |
88 | #else | |
d02a535e | 89 | return open(pathname, flags); |
926b866c | 90 | #endif |
d02a535e BV |
91 | } |
92 | ||
2119ab03 UH |
93 | /* |
94 | * Close the serial port. | |
95 | * Returns 0 upon success, -1 upon failure. | |
96 | */ | |
1a081ca6 | 97 | SR_PRIV int serial_close(int fd) |
d02a535e | 98 | { |
926b866c | 99 | #ifdef _WIN32 |
2119ab03 UH |
100 | /* Returns non-zero upon success, 0 upon failure. */ |
101 | return (CloseHandle(hdl) == 0) ? -1 : 0; | |
926b866c | 102 | #else |
2119ab03 | 103 | /* Returns 0 upon success, -1 upon failure. */ |
d02a535e | 104 | return close(fd); |
926b866c | 105 | #endif |
d02a535e BV |
106 | } |
107 | ||
1fdb75e1 UH |
108 | /* |
109 | * Flush serial port buffers (if any). | |
110 | * Returns 0 upon success, -1 upon failure. | |
111 | */ | |
1a081ca6 | 112 | SR_PRIV int serial_flush(int fd) |
06d64eb8 | 113 | { |
1fdb75e1 UH |
114 | #ifdef _WIN32 |
115 | /* Returns non-zero upon success, 0 upon failure. */ | |
2119ab03 | 116 | return (PurgeComm(hdl, PURGE_RXCLEAR | PURGE_TXCLEAR) == 0) ? -1 : 0; |
1fdb75e1 UH |
117 | #else |
118 | /* Returns 0 upon success, -1 upon failure. */ | |
f0551a65 | 119 | return tcflush(fd, TCIOFLUSH); |
1fdb75e1 | 120 | #endif |
06d64eb8 BV |
121 | } |
122 | ||
2119ab03 UH |
123 | /* |
124 | * Write a number of bytes to the specified serial port. | |
125 | * Returns the number of bytes written, or -1 upon failure. | |
126 | */ | |
1a081ca6 | 127 | SR_PRIV int serial_write(int fd, const void *buf, size_t count) |
2119ab03 UH |
128 | { |
129 | #ifdef _WIN32 | |
130 | DWORD tmp = 0; | |
131 | ||
132 | /* FIXME */ | |
133 | /* Returns non-zero upon success, 0 upon failure. */ | |
134 | WriteFile(hdl, buf, count, &tmp, NULL); | |
135 | #else | |
136 | /* Returns the number of bytes written, or -1 upon failure. */ | |
137 | return write(fd, buf, count); | |
138 | #endif | |
139 | } | |
140 | ||
141 | /* | |
142 | * Read a number of bytes from the specified serial port. | |
143 | * Returns the number of bytes read, or -1 upon failure. | |
144 | */ | |
1a081ca6 | 145 | SR_PRIV int serial_read(int fd, void *buf, size_t count) |
2119ab03 UH |
146 | { |
147 | #ifdef _WIN32 | |
148 | DWORD tmp = 0; | |
149 | ||
150 | /* FIXME */ | |
151 | /* Returns non-zero upon success, 0 upon failure. */ | |
152 | return ReadFile(hdl, buf, count, &tmp, NULL); | |
153 | #else | |
154 | /* Returns the number of bytes read, or -1 upon failure. */ | |
155 | return read(fd, buf, count); | |
156 | #endif | |
157 | } | |
158 | ||
1a081ca6 | 159 | SR_PRIV void *serial_backup_params(int fd) |
d02a535e | 160 | { |
926b866c UH |
161 | #ifdef _WIN32 |
162 | /* TODO */ | |
163 | #else | |
d02a535e BV |
164 | struct termios *term; |
165 | ||
c548332c UH |
166 | /* TODO: 'term' is never g_free()'d? */ |
167 | if (!(term = g_try_malloc(sizeof(struct termios)))) { | |
168 | sr_err("serial: %s: term malloc failed", __func__); | |
169 | return NULL; | |
170 | } | |
171 | ||
d02a535e BV |
172 | tcgetattr(fd, term); |
173 | ||
174 | return term; | |
926b866c | 175 | #endif |
d02a535e BV |
176 | } |
177 | ||
1a081ca6 | 178 | SR_PRIV void serial_restore_params(int fd, void *backup) |
d02a535e | 179 | { |
926b866c UH |
180 | #ifdef _WIN32 |
181 | /* TODO */ | |
182 | #else | |
986f7270 | 183 | tcsetattr(fd, TCSADRAIN, (struct termios *)backup); |
926b866c | 184 | #endif |
d02a535e BV |
185 | } |
186 | ||
1ff7712c | 187 | /* |
2119ab03 UH |
188 | * Set serial parameters. |
189 | * | |
190 | * flowcontrol: 1 = rts/cts, 2 = xon/xoff | |
191 | * parity: 0 = none, 1 = even, 2 = odd | |
1ff7712c | 192 | */ |
0abee507 | 193 | SR_PRIV int serial_set_params(int fd, int baudrate, int bits, int parity, |
1a081ca6 | 194 | int stopbits, int flowcontrol) |
d02a535e | 195 | { |
926b866c UH |
196 | #ifdef _WIN32 |
197 | DCB dcb; | |
198 | ||
199 | if (!GetCommState(hdl, &dcb)) { | |
200 | /* TODO: Error handling. */ | |
e46b8fb1 | 201 | return SR_ERR; |
926b866c UH |
202 | } |
203 | ||
0abee507 | 204 | switch (baudrate) { |
1fdb75e1 | 205 | /* TODO: Support for higher baud rates. */ |
926b866c UH |
206 | case 115200: |
207 | dcb.BaudRate = CBR_115200; | |
208 | break; | |
209 | case 57600: | |
210 | dcb.BaudRate = CBR_57600; | |
211 | break; | |
212 | case 38400: | |
213 | dcb.BaudRate = CBR_38400; | |
214 | break; | |
215 | case 19200: | |
216 | dcb.BaudRate = CBR_19200; | |
217 | break; | |
218 | case 9600: | |
219 | dcb.BaudRate = CBR_9600; | |
220 | break; | |
221 | default: | |
222 | /* TODO: Error handling. */ | |
223 | break; | |
224 | } | |
225 | dcb.ByteSize = bits; | |
226 | dcb.Parity = NOPARITY; /* TODO: Don't hardcode. */ | |
227 | dcb.StopBits = ONESTOPBIT; /* TODO: Don't hardcode. */ | |
228 | ||
229 | if (!SetCommState(hdl, &dcb)) { | |
230 | /* TODO: Error handling. */ | |
e46b8fb1 | 231 | return SR_ERR; |
926b866c UH |
232 | } |
233 | #else | |
d02a535e | 234 | struct termios term; |
1ff7712c | 235 | speed_t baud; |
d02a535e | 236 | |
0abee507 | 237 | switch (baudrate) { |
1ff7712c DR |
238 | case 9600: |
239 | baud = B9600; | |
240 | break; | |
241 | case 38400: | |
242 | baud = B38400; | |
243 | break; | |
244 | case 57600: | |
245 | baud = B57600; | |
246 | break; | |
247 | case 115200: | |
248 | baud = B115200; | |
249 | break; | |
9a751023 | 250 | #ifndef __APPLE__ |
1ff7712c DR |
251 | case 460800: |
252 | baud = B460800; | |
253 | break; | |
9a751023 | 254 | #endif |
1ff7712c | 255 | default: |
e46b8fb1 | 256 | return SR_ERR; |
1ff7712c | 257 | } |
d02a535e | 258 | |
986f7270 | 259 | if (tcgetattr(fd, &term) < 0) |
e46b8fb1 | 260 | return SR_ERR; |
1ff7712c | 261 | if (cfsetispeed(&term, baud) < 0) |
e46b8fb1 | 262 | return SR_ERR; |
1ff7712c | 263 | |
d02a535e | 264 | term.c_cflag &= ~CSIZE; |
1ff7712c DR |
265 | switch (bits) { |
266 | case 8: | |
267 | term.c_cflag |= CS8; | |
268 | break; | |
269 | case 7: | |
270 | term.c_cflag |= CS7; | |
271 | break; | |
272 | default: | |
e46b8fb1 | 273 | return SR_ERR; |
1ff7712c DR |
274 | } |
275 | ||
d02a535e | 276 | term.c_cflag &= ~CSTOPB; |
1ff7712c DR |
277 | switch (stopbits) { |
278 | case 1: | |
279 | break; | |
280 | case 2: | |
281 | term.c_cflag |= CSTOPB; | |
282 | default: | |
e46b8fb1 | 283 | return SR_ERR; |
1ff7712c DR |
284 | } |
285 | ||
286 | term.c_cflag &= ~(IXON | IXOFF | CRTSCTS); | |
287 | switch (flowcontrol) { | |
288 | case 2: | |
289 | term.c_cflag |= IXON | IXOFF; | |
290 | break; | |
291 | case 1: | |
292 | term.c_cflag |= CRTSCTS; | |
293 | default: | |
e46b8fb1 | 294 | return SR_ERR; |
1ff7712c DR |
295 | } |
296 | ||
ac4a2ea4 DR |
297 | term.c_iflag &= ~IGNPAR; |
298 | term.c_cflag &= ~(PARODD | PARENB); | |
1ff7712c | 299 | switch (parity) { |
f8c1fcda | 300 | case SERIAL_PARITY_NONE: |
1ff7712c DR |
301 | term.c_iflag |= IGNPAR; |
302 | break; | |
f8c1fcda | 303 | case SERIAL_PARITY_EVEN: |
ac4a2ea4 | 304 | term.c_cflag |= PARENB; |
1ff7712c | 305 | break; |
f8c1fcda | 306 | case SERIAL_PARITY_ODD: |
ac4a2ea4 | 307 | term.c_cflag |= PARENB | PARODD; |
1ff7712c DR |
308 | break; |
309 | default: | |
e46b8fb1 | 310 | return SR_ERR; |
1ff7712c DR |
311 | } |
312 | ||
986f7270 | 313 | if (tcsetattr(fd, TCSADRAIN, &term) < 0) |
e46b8fb1 | 314 | return SR_ERR; |
926b866c | 315 | #endif |
d02a535e | 316 | |
e46b8fb1 | 317 | return SR_OK; |
d02a535e | 318 | } |