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9b2b3ef9 KA |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2017 Kumar Abhishek <abhishek@theembeddedkitchen.net> | |
3124d3bc KA |
5 | * Portions of the code are adapted from scpi_tcp.c and scpi.c, their |
6 | * copyright notices are listed below: | |
9b2b3ef9 KA |
7 | * |
8 | * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li> | |
9 | * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com> | |
10 | * | |
11 | * This program is free software: you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation, either version 3 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
23 | */ | |
24 | ||
25 | #include <config.h> | |
26 | #ifdef _WIN32 | |
27 | #define _WIN32_WINNT 0x0501 | |
28 | #include <winsock2.h> | |
29 | #include <ws2tcpip.h> | |
30 | #endif | |
31 | #include <glib.h> | |
32 | #include <string.h> | |
33 | #include <unistd.h> | |
34 | #ifndef _WIN32 | |
35 | #include <sys/socket.h> | |
36 | #include <netinet/in.h> | |
37 | #include <arpa/inet.h> | |
38 | #include <netdb.h> | |
39 | #endif | |
40 | #include <errno.h> | |
41 | ||
42 | #include "protocol.h" | |
43 | #include "beaglelogic.h" | |
44 | ||
a31010b3 KA |
45 | static int beaglelogic_tcp_open(struct dev_context *devc) |
46 | { | |
9b2b3ef9 KA |
47 | struct addrinfo hints; |
48 | struct addrinfo *results, *res; | |
49 | int err; | |
50 | ||
51 | memset(&hints, 0, sizeof(hints)); | |
52 | hints.ai_family = AF_UNSPEC; | |
53 | hints.ai_socktype = SOCK_STREAM; | |
54 | hints.ai_protocol = IPPROTO_TCP; | |
55 | ||
56 | err = getaddrinfo(devc->address, devc->port, &hints, &results); | |
57 | ||
58 | if (err) { | |
59 | sr_err("Address lookup failed: %s:%s: %s", devc->address, | |
60 | devc->port, gai_strerror(err)); | |
61 | return SR_ERR; | |
62 | } | |
63 | ||
64 | for (res = results; res; res = res->ai_next) { | |
65 | if ((devc->socket = socket(res->ai_family, res->ai_socktype, | |
66 | res->ai_protocol)) < 0) | |
67 | continue; | |
68 | if (connect(devc->socket, res->ai_addr, res->ai_addrlen) != 0) { | |
69 | close(devc->socket); | |
70 | devc->socket = -1; | |
71 | continue; | |
72 | } | |
73 | break; | |
74 | } | |
75 | ||
76 | freeaddrinfo(results); | |
77 | ||
78 | if (devc->socket < 0) { | |
79 | sr_err("Failed to connect to %s:%s: %s", devc->address, | |
80 | devc->port, g_strerror(errno)); | |
81 | return SR_ERR; | |
82 | } | |
83 | ||
84 | return SR_OK; | |
85 | } | |
86 | ||
87 | static int beaglelogic_tcp_send_cmd(struct dev_context *devc, | |
a31010b3 KA |
88 | const char *format, ...) |
89 | { | |
9b2b3ef9 KA |
90 | int len, out; |
91 | va_list args, args_copy; | |
92 | char *buf; | |
93 | ||
94 | va_start(args, format); | |
95 | va_copy(args_copy, args); | |
96 | len = vsnprintf(NULL, 0, format, args_copy); | |
97 | va_end(args_copy); | |
98 | ||
99 | buf = g_malloc0(len + 2); | |
100 | vsprintf(buf, format, args); | |
101 | va_end(args); | |
102 | ||
103 | if (buf[len - 1] != '\n') | |
104 | buf[len] = '\n'; | |
105 | ||
106 | out = send(devc->socket, buf, strlen(buf), 0); | |
107 | ||
108 | if (out < 0) { | |
109 | sr_err("Send error: %s", g_strerror(errno)); | |
71f2000b | 110 | g_free(buf); |
9b2b3ef9 KA |
111 | return SR_ERR; |
112 | } | |
113 | ||
114 | if (out < (int)strlen(buf)) { | |
f154b40d | 115 | sr_dbg("Only sent %d/%lu bytes of command: '%s'.", out, |
9b2b3ef9 KA |
116 | strlen(buf), buf); |
117 | } | |
118 | ||
119 | sr_spew("Sent command: '%s'.", buf); | |
f82525e6 | 120 | |
9b2b3ef9 KA |
121 | g_free(buf); |
122 | ||
123 | return SR_OK; | |
124 | } | |
125 | ||
126 | static int beaglelogic_tcp_read_data(struct dev_context *devc, char *buf, | |
a31010b3 KA |
127 | int maxlen) |
128 | { | |
9b2b3ef9 KA |
129 | int len; |
130 | ||
131 | len = recv(devc->socket, buf, maxlen, 0); | |
132 | ||
133 | if (len < 0) { | |
134 | sr_err("Receive error: %s", g_strerror(errno)); | |
135 | return SR_ERR; | |
136 | } | |
137 | ||
138 | return len; | |
139 | } | |
140 | ||
a31010b3 KA |
141 | SR_PRIV int beaglelogic_tcp_drain(struct dev_context *devc) |
142 | { | |
f7d7ee82 KA |
143 | char *buf = g_malloc(1024); |
144 | fd_set rset; | |
145 | int ret, len = 0; | |
146 | struct timeval tv; | |
147 | ||
148 | FD_ZERO(&rset); | |
149 | FD_SET(devc->socket, &rset); | |
150 | ||
151 | /* 25ms timeout */ | |
152 | tv.tv_sec = 0; | |
153 | tv.tv_usec = 25 * 1000; | |
154 | ||
155 | do { | |
156 | ret = select(devc->socket + 1, &rset, NULL, NULL, &tv); | |
f82525e6 | 157 | if (ret > 0) |
f7d7ee82 | 158 | len += beaglelogic_tcp_read_data(devc, buf, 1024); |
f7d7ee82 KA |
159 | } while (ret > 0); |
160 | ||
161 | sr_spew("Drained %d bytes of data.", len); | |
162 | ||
163 | g_free(buf); | |
f82525e6 | 164 | |
f7d7ee82 KA |
165 | return SR_OK; |
166 | } | |
167 | ||
9b2b3ef9 | 168 | static int beaglelogic_tcp_get_string(struct dev_context *devc, const char *cmd, |
a31010b3 KA |
169 | char **tcp_resp) |
170 | { | |
9b2b3ef9 KA |
171 | GString *response = g_string_sized_new(1024); |
172 | int len; | |
173 | gint64 timeout; | |
174 | ||
175 | if (cmd) { | |
f82525e6 | 176 | if (beaglelogic_tcp_send_cmd(devc, cmd) != SR_OK) |
9b2b3ef9 | 177 | return SR_ERR; |
9b2b3ef9 KA |
178 | } |
179 | ||
180 | timeout = g_get_monotonic_time() + devc->read_timeout; | |
181 | len = beaglelogic_tcp_read_data(devc, response->str, | |
182 | response->allocated_len); | |
183 | ||
184 | if (len < 0) { | |
185 | g_string_free(response, TRUE); | |
186 | return SR_ERR; | |
187 | } | |
188 | ||
f82525e6 | 189 | if (len > 0) |
9b2b3ef9 | 190 | g_string_set_size(response, len); |
9b2b3ef9 KA |
191 | |
192 | if (g_get_monotonic_time() > timeout) { | |
193 | sr_err("Timed out waiting for response."); | |
194 | g_string_free(response, TRUE); | |
195 | return SR_ERR_TIMEOUT; | |
196 | } | |
197 | ||
198 | /* Remove trailing newline if present */ | |
199 | if (response->len >= 1 && response->str[response->len - 1] == '\n') | |
200 | g_string_truncate(response, response->len - 1); | |
201 | ||
202 | /* Remove trailing carriage return if present */ | |
203 | if (response->len >= 1 && response->str[response->len - 1] == '\r') | |
204 | g_string_truncate(response, response->len - 1); | |
205 | ||
206 | sr_spew("Got response: '%.70s', length %" G_GSIZE_FORMAT ".", | |
207 | response->str, response->len); | |
208 | ||
209 | *tcp_resp = g_string_free(response, FALSE); | |
f82525e6 | 210 | |
9b2b3ef9 KA |
211 | return SR_OK; |
212 | } | |
213 | ||
214 | static int beaglelogic_tcp_get_int(struct dev_context *devc, | |
a31010b3 KA |
215 | const char *cmd, int *response) |
216 | { | |
9b2b3ef9 KA |
217 | int ret; |
218 | char *resp = NULL; | |
219 | ||
220 | ret = beaglelogic_tcp_get_string(devc, cmd, &resp); | |
221 | if (!resp && ret != SR_OK) | |
222 | return ret; | |
223 | ||
224 | if (sr_atoi(resp, response) == SR_OK) | |
225 | ret = SR_OK; | |
226 | else | |
227 | ret = SR_ERR_DATA; | |
228 | ||
229 | g_free(resp); | |
230 | ||
231 | return ret; | |
232 | } | |
233 | ||
a31010b3 KA |
234 | SR_PRIV int beaglelogic_tcp_detect(struct dev_context *devc) |
235 | { | |
9b2b3ef9 KA |
236 | char *resp = NULL; |
237 | int ret; | |
238 | ||
239 | ret = beaglelogic_tcp_get_string(devc, "version", &resp); | |
240 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "BeagleLogic", 11)) | |
241 | ret = SR_OK; | |
242 | else | |
243 | ret = SR_ERR; | |
244 | ||
245 | g_free(resp); | |
f82525e6 | 246 | |
9b2b3ef9 KA |
247 | return ret; |
248 | } | |
249 | ||
a31010b3 KA |
250 | static int beaglelogic_open(struct dev_context *devc) |
251 | { | |
9b2b3ef9 KA |
252 | return beaglelogic_tcp_open(devc); |
253 | } | |
254 | ||
a31010b3 KA |
255 | static int beaglelogic_close(struct dev_context *devc) |
256 | { | |
9b2b3ef9 KA |
257 | if (close(devc->socket) < 0) |
258 | return SR_ERR; | |
259 | ||
260 | return SR_OK; | |
261 | } | |
262 | ||
a31010b3 KA |
263 | static int beaglelogic_get_buffersize(struct dev_context *devc) |
264 | { | |
9b2b3ef9 KA |
265 | return beaglelogic_tcp_get_int(devc, "memalloc", |
266 | (int *)&devc->buffersize); | |
267 | } | |
268 | ||
a31010b3 KA |
269 | static int beaglelogic_set_buffersize(struct dev_context *devc) |
270 | { | |
9b2b3ef9 KA |
271 | int ret; |
272 | char *resp; | |
273 | ||
274 | beaglelogic_tcp_send_cmd(devc, "memalloc %lu", devc->buffersize); | |
275 | ret = beaglelogic_tcp_get_string(devc, NULL, &resp); | |
276 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2)) | |
277 | ret = SR_OK; | |
278 | else | |
279 | ret = SR_ERR; | |
280 | ||
281 | g_free(resp); | |
f82525e6 | 282 | |
9b2b3ef9 KA |
283 | return ret; |
284 | } | |
285 | ||
a31010b3 KA |
286 | static int beaglelogic_get_samplerate(struct dev_context *devc) |
287 | { | |
9b2b3ef9 | 288 | int arg, err; |
f82525e6 | 289 | |
9b2b3ef9 KA |
290 | err = beaglelogic_tcp_get_int(devc, "samplerate", &arg); |
291 | devc->cur_samplerate = arg; | |
f82525e6 | 292 | |
9b2b3ef9 KA |
293 | return err; |
294 | } | |
295 | ||
a31010b3 KA |
296 | static int beaglelogic_set_samplerate(struct dev_context *devc) |
297 | { | |
9b2b3ef9 KA |
298 | int ret; |
299 | char *resp; | |
300 | ||
301 | beaglelogic_tcp_send_cmd(devc, "samplerate %lu", | |
302 | (uint32_t)devc->cur_samplerate); | |
303 | ret = beaglelogic_tcp_get_string(devc, NULL, &resp); | |
304 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2)) | |
305 | ret = SR_OK; | |
306 | else | |
307 | ret = SR_ERR; | |
308 | ||
309 | g_free(resp); | |
f82525e6 | 310 | |
9b2b3ef9 KA |
311 | return ret; |
312 | } | |
313 | ||
a31010b3 KA |
314 | static int beaglelogic_get_sampleunit(struct dev_context *devc) |
315 | { | |
9b2b3ef9 KA |
316 | return beaglelogic_tcp_get_int(devc, "sampleunit", |
317 | (int *)&devc->sampleunit); | |
318 | } | |
319 | ||
a31010b3 KA |
320 | static int beaglelogic_set_sampleunit(struct dev_context *devc) |
321 | { | |
9b2b3ef9 KA |
322 | int ret; |
323 | char *resp; | |
324 | ||
325 | beaglelogic_tcp_send_cmd(devc, "sampleunit %lu", devc->sampleunit); | |
326 | ret = beaglelogic_tcp_get_string(devc, NULL, &resp); | |
327 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2)) | |
328 | ret = SR_OK; | |
329 | else | |
330 | ret = SR_ERR; | |
331 | ||
332 | g_free(resp); | |
f82525e6 | 333 | |
9b2b3ef9 KA |
334 | return ret; |
335 | } | |
336 | ||
a31010b3 KA |
337 | static int beaglelogic_get_triggerflags(struct dev_context *devc) |
338 | { | |
9b2b3ef9 KA |
339 | return beaglelogic_tcp_get_int(devc, "triggerflags", |
340 | (int *)&devc->triggerflags); | |
341 | } | |
342 | ||
a31010b3 KA |
343 | static int beaglelogic_set_triggerflags(struct dev_context *devc) |
344 | { | |
9b2b3ef9 KA |
345 | int ret; |
346 | char *resp; | |
347 | ||
348 | beaglelogic_tcp_send_cmd(devc, "triggerflags %lu", devc->triggerflags); | |
349 | ret = beaglelogic_tcp_get_string(devc, NULL, &resp); | |
350 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2)) | |
351 | ret = SR_OK; | |
352 | else | |
353 | ret = SR_ERR; | |
354 | ||
355 | g_free(resp); | |
f82525e6 | 356 | |
9b2b3ef9 KA |
357 | return ret; |
358 | } | |
359 | ||
a31010b3 KA |
360 | static int beaglelogic_get_lasterror(struct dev_context *devc) |
361 | { | |
9b2b3ef9 | 362 | devc->last_error = 0; |
f82525e6 | 363 | |
9b2b3ef9 KA |
364 | return SR_OK; |
365 | } | |
366 | ||
a31010b3 KA |
367 | static int beaglelogic_start(struct dev_context *devc) |
368 | { | |
f7d7ee82 | 369 | beaglelogic_tcp_drain(devc); |
f82525e6 | 370 | |
9b2b3ef9 KA |
371 | return beaglelogic_tcp_send_cmd(devc, "get"); |
372 | } | |
373 | ||
a31010b3 KA |
374 | static int beaglelogic_stop(struct dev_context *devc) |
375 | { | |
9b2b3ef9 KA |
376 | return beaglelogic_tcp_send_cmd(devc, "close"); |
377 | } | |
378 | ||
a31010b3 KA |
379 | static int beaglelogic_get_bufunitsize(struct dev_context *devc) |
380 | { | |
9b2b3ef9 KA |
381 | return beaglelogic_tcp_get_int(devc, "bufunitsize", |
382 | (int *)&devc->bufunitsize); | |
383 | } | |
384 | ||
a31010b3 KA |
385 | static int beaglelogic_set_bufunitsize(struct dev_context *devc) |
386 | { | |
9b2b3ef9 KA |
387 | int ret; |
388 | char *resp; | |
389 | ||
390 | beaglelogic_tcp_send_cmd(devc, "bufunitsize %ld", devc->bufunitsize); | |
391 | ret = beaglelogic_tcp_get_string(devc, NULL, &resp); | |
392 | if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2)) | |
393 | ret = SR_OK; | |
394 | else | |
395 | ret = SR_ERR; | |
396 | ||
397 | g_free(resp); | |
f82525e6 | 398 | |
9b2b3ef9 KA |
399 | return ret; |
400 | } | |
401 | ||
a31010b3 KA |
402 | static int dummy(struct dev_context *devc) |
403 | { | |
f154b40d | 404 | (void)devc; |
f82525e6 | 405 | |
9b2b3ef9 KA |
406 | return SR_ERR_NA; |
407 | } | |
408 | ||
409 | SR_PRIV const struct beaglelogic_ops beaglelogic_tcp_ops = { | |
410 | .open = beaglelogic_open, | |
411 | .close = beaglelogic_close, | |
412 | .get_buffersize = beaglelogic_get_buffersize, | |
413 | .set_buffersize = beaglelogic_set_buffersize, | |
414 | .get_samplerate = beaglelogic_get_samplerate, | |
415 | .set_samplerate = beaglelogic_set_samplerate, | |
416 | .get_sampleunit = beaglelogic_get_sampleunit, | |
417 | .set_sampleunit = beaglelogic_set_sampleunit, | |
418 | .get_triggerflags = beaglelogic_get_triggerflags, | |
419 | .set_triggerflags = beaglelogic_set_triggerflags, | |
420 | .start = beaglelogic_start, | |
421 | .stop = beaglelogic_stop, | |
422 | .get_lasterror = beaglelogic_get_lasterror, | |
423 | .get_bufunitsize = beaglelogic_get_bufunitsize, | |
424 | .set_bufunitsize = beaglelogic_set_bufunitsize, | |
425 | .mmap = dummy, | |
426 | .munmap = dummy, | |
427 | }; |