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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2016 Eva Kissling <eva.kissling@bluewin.ch> | |
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 | ||
20 | #include <config.h> | |
21 | ||
22 | #ifdef _WIN32 | |
23 | #define _WIN32_WINNT 0x0501 | |
24 | #include <winsock2.h> | |
25 | #include <ws2tcpip.h> | |
26 | #endif | |
27 | ||
28 | #include <string.h> | |
29 | #include <unistd.h> | |
30 | ||
31 | #ifndef _WIN32 | |
32 | #include <sys/socket.h> | |
33 | #include <netinet/in.h> | |
34 | #include <arpa/inet.h> | |
35 | #include <netdb.h> | |
36 | #endif | |
37 | ||
38 | #include <errno.h> | |
39 | #include "protocol.h" | |
40 | ||
41 | #include <sys/ioctl.h> | |
42 | ||
43 | #define BUFFER_SIZE 4 | |
44 | ||
45 | /* Top-level command opcodes */ | |
46 | #define CMD_SET_TRIGGER 0x00 | |
47 | #define CMD_CFG_TRIGGER 0xF0 | |
48 | #define CMD_CFG_LA 0x0F | |
49 | #define CMD_START 0xFE | |
50 | #define CMD_RESET 0xEE | |
51 | ||
52 | #define CMD_GET_BUS_WIDTHS 0xAA | |
53 | #define CMD_GET_LA_ID 0xBB | |
54 | #define CMD_ESCAPE 0x55 | |
55 | ||
56 | /* Trigger subfunction command opcodes */ | |
57 | #define CMD_TRIG_MASKS 0xF1 | |
58 | #define CMD_TRIG_MASK 0xF3 | |
59 | #define CMD_TRIG_VALUE 0xF7 | |
60 | ||
61 | #define CMD_TRIG_MASKS_LAST 0xF9 | |
62 | #define CMD_TRIG_MASK_LAST 0xFB | |
63 | #define CMD_TRIG_VALUE_LAST 0xFF | |
64 | ||
65 | #define CMD_TRIG_SELECT_EDGE_MASK 0xF5 | |
66 | #define CMD_TRIG_SET_EDGE_MASK 0xF6 | |
67 | ||
68 | /* LA subfunction command opcodes */ | |
69 | #define CMD_LA_DELAY 0x1F | |
70 | ||
71 | static gboolean data_available(struct ipdbg_la_tcp *tcp) | |
72 | { | |
73 | #ifdef __WIN32__ | |
74 | ioctlsocket(tcp->socket, FIONREAD, &bytes_available); | |
75 | #else | |
76 | int status; | |
77 | ||
78 | if (ioctl(tcp->socket, FIONREAD, &status) < 0) { // TIOCMGET | |
79 | sr_err("FIONREAD failed: %s\n", g_strerror(errno)); | |
80 | return FALSE; | |
81 | } | |
82 | ||
83 | return (status < 1) ? FALSE : TRUE; | |
84 | #endif // __WIN32__ | |
85 | } | |
86 | ||
87 | SR_PRIV struct ipdbg_la_tcp *ipdbg_la_tcp_new(void) | |
88 | { | |
89 | struct ipdbg_la_tcp *tcp; | |
90 | ||
91 | tcp = g_malloc0(sizeof(struct ipdbg_la_tcp)); | |
92 | tcp->address = NULL; | |
93 | tcp->port = NULL; | |
94 | tcp->socket = -1; | |
95 | ||
96 | return tcp; | |
97 | } | |
98 | ||
99 | SR_PRIV void ipdbg_la_tcp_free(struct ipdbg_la_tcp *tcp) | |
100 | { | |
101 | g_free(tcp->address); | |
102 | g_free(tcp->port); | |
103 | } | |
104 | ||
105 | SR_PRIV int ipdbg_la_tcp_open(struct ipdbg_la_tcp *tcp) | |
106 | { | |
107 | struct addrinfo hints; | |
108 | struct addrinfo *results, *res; | |
109 | int err; | |
110 | ||
111 | memset(&hints, 0, sizeof(hints)); | |
112 | hints.ai_family = AF_UNSPEC; | |
113 | hints.ai_socktype = SOCK_STREAM; | |
114 | hints.ai_protocol = IPPROTO_TCP; | |
115 | ||
116 | err = getaddrinfo(tcp->address, tcp->port, &hints, &results); | |
117 | ||
118 | if (err) { | |
119 | sr_err("Address lookup failed: %s:%s: %s", tcp->address, | |
120 | tcp->port, gai_strerror(err)); | |
121 | return SR_ERR; | |
122 | } | |
123 | ||
124 | for (res = results; res; res = res->ai_next) { | |
125 | if ((tcp->socket = socket(res->ai_family, res->ai_socktype, | |
126 | res->ai_protocol)) < 0) | |
127 | continue; | |
128 | if (connect(tcp->socket, res->ai_addr, res->ai_addrlen) != 0) { | |
129 | close(tcp->socket); | |
130 | tcp->socket = -1; | |
131 | continue; | |
132 | } | |
133 | break; | |
134 | } | |
135 | ||
136 | freeaddrinfo(results); | |
137 | ||
138 | if (tcp->socket < 0) { | |
139 | sr_err("Failed to connect to %s:%s: %s", tcp->address, tcp->port, | |
140 | g_strerror(errno)); | |
141 | return SR_ERR; | |
142 | } | |
143 | ||
144 | return SR_OK; | |
145 | } | |
146 | ||
147 | SR_PRIV int ipdbg_la_tcp_close(struct ipdbg_la_tcp *tcp) | |
148 | { | |
149 | int ret = SR_OK; | |
150 | ||
151 | if (close(tcp->socket) < 0) | |
152 | ret = SR_ERR; | |
153 | ||
154 | tcp->socket = -1; | |
155 | ||
156 | return ret; | |
157 | } | |
158 | ||
159 | static int tcp_send(struct ipdbg_la_tcp *tcp, const uint8_t *buf, size_t len) | |
160 | { | |
161 | int out; | |
162 | out = send(tcp->socket, buf, len, 0); | |
163 | ||
164 | if (out < 0) { | |
165 | sr_err("Send error: %s", g_strerror(errno)); | |
166 | return SR_ERR; | |
167 | } | |
168 | ||
169 | if (out < (int)len) | |
170 | sr_dbg("Only sent %d/%d bytes of data.", out, (int)len); | |
171 | ||
172 | return SR_OK; | |
173 | } | |
174 | ||
175 | static int tcp_receive_blocking(struct ipdbg_la_tcp *tcp, | |
176 | uint8_t *buf, int bufsize) | |
177 | { | |
178 | int received = 0; | |
179 | int error_count = 0; | |
180 | ||
181 | /* Timeout after 500ms of not receiving data */ | |
182 | while ((received < bufsize) && (error_count < 500)) { | |
183 | if (ipdbg_la_tcp_receive(tcp, buf) > 0) { | |
184 | buf++; | |
185 | received++; | |
186 | } else { | |
187 | error_count++; | |
188 | g_usleep(1000); /* Sleep for 1ms */ | |
189 | } | |
190 | } | |
191 | ||
192 | return received; | |
193 | } | |
194 | ||
195 | SR_PRIV int ipdbg_la_tcp_receive(struct ipdbg_la_tcp *tcp, | |
196 | uint8_t *buf) | |
197 | { | |
198 | int received = 0; | |
199 | ||
200 | if (data_available(tcp)) { | |
201 | while (received < 1) { | |
202 | int len = recv(tcp->socket, buf, 1, 0); | |
203 | ||
204 | if (len < 0) { | |
205 | sr_err("Receive error: %s", g_strerror(errno)); | |
206 | return SR_ERR; | |
207 | } else | |
208 | received += len; | |
209 | } | |
210 | ||
211 | return received; | |
212 | } else | |
213 | return -1; | |
214 | } | |
215 | ||
216 | SR_PRIV int ipdbg_la_convert_trigger(const struct sr_dev_inst *sdi) | |
217 | { | |
218 | struct dev_context *devc; | |
219 | struct sr_trigger *trigger; | |
220 | struct sr_trigger_stage *stage; | |
221 | struct sr_trigger_match *match; | |
222 | const GSList *l, *m; | |
223 | ||
224 | devc = sdi->priv; | |
225 | ||
226 | devc->num_stages = 0; | |
227 | devc->num_transfers = 0; | |
228 | devc->raw_sample_buf = NULL; | |
229 | ||
230 | for (uint64_t i = 0; i < devc->data_width_bytes; i++) { | |
231 | devc->trigger_mask[i] = 0; | |
232 | devc->trigger_value[i] = 0; | |
233 | devc->trigger_mask_last[i] = 0; | |
234 | devc->trigger_value_last[i] = 0; | |
235 | devc->trigger_edge_mask[i] = 0; | |
236 | } | |
237 | ||
238 | if (!(trigger = sr_session_trigger_get(sdi->session))) | |
239 | return SR_OK; | |
240 | ||
241 | for (l = trigger->stages; l; l = l->next) { | |
242 | stage = l->data; | |
243 | for (m = stage->matches; m; m = m->next) { | |
244 | match = m->data; | |
245 | int byte_idx = match->channel->index / 8; | |
246 | uint8_t match_bit = 1 << (match->channel->index % 8); | |
247 | ||
248 | if (!match->channel->enabled) | |
249 | /* Ignore disabled channels with a trigger. */ | |
250 | continue; | |
251 | ||
252 | if (match->match == SR_TRIGGER_ONE) { | |
253 | devc->trigger_value[byte_idx] |= match_bit; | |
254 | devc->trigger_mask[byte_idx] |= match_bit; | |
255 | devc->trigger_mask_last[byte_idx] &= ~match_bit; | |
256 | devc->trigger_edge_mask[byte_idx] &= ~match_bit; | |
257 | } else if (match->match == SR_TRIGGER_ZERO) { | |
258 | devc->trigger_value[byte_idx] &= ~match_bit; | |
259 | devc->trigger_mask[byte_idx] |= match_bit; | |
260 | devc->trigger_mask_last[byte_idx] &= ~match_bit; | |
261 | devc->trigger_edge_mask[byte_idx] &= ~match_bit; | |
262 | } else if (match->match == SR_TRIGGER_RISING) { | |
263 | devc->trigger_value[byte_idx] |= match_bit; | |
264 | devc->trigger_value_last[byte_idx] &= | |
265 | ~match_bit; | |
266 | devc->trigger_mask[byte_idx] |= match_bit; | |
267 | devc->trigger_mask_last[byte_idx] |= match_bit; | |
268 | devc->trigger_edge_mask[byte_idx] &= ~match_bit; | |
269 | } else if (match->match == SR_TRIGGER_FALLING) { | |
270 | devc->trigger_value[byte_idx] &= ~match_bit; | |
271 | devc->trigger_value_last[byte_idx] |= match_bit; | |
272 | devc->trigger_mask[byte_idx] |= match_bit; | |
273 | devc->trigger_mask_last[byte_idx] |= match_bit; | |
274 | devc->trigger_edge_mask[byte_idx] &= ~match_bit; | |
275 | } else if (match->match == SR_TRIGGER_EDGE) { | |
276 | devc->trigger_mask[byte_idx] &= ~match_bit; | |
277 | devc->trigger_mask_last[byte_idx] &= ~match_bit; | |
278 | devc->trigger_edge_mask[byte_idx] |= match_bit; | |
279 | } | |
280 | } | |
281 | } | |
282 | ||
283 | return SR_OK; | |
284 | } | |
285 | ||
286 | SR_PRIV int ipdbg_la_receive_data(int fd, int revents, void *cb_data) | |
287 | { | |
288 | const struct sr_dev_inst *sdi; | |
289 | struct dev_context *devc; | |
290 | ||
291 | (void)fd; | |
292 | (void)revents; | |
293 | ||
294 | sdi = cb_data; | |
295 | if (!sdi) | |
296 | return FALSE; | |
297 | ||
298 | if (!(devc = sdi->priv)) | |
299 | return FALSE; | |
300 | ||
301 | struct ipdbg_la_tcp *tcp = sdi->conn; | |
302 | struct sr_datafeed_packet packet; | |
303 | struct sr_datafeed_logic logic; | |
304 | ||
305 | if (!devc->raw_sample_buf) { | |
306 | devc->raw_sample_buf = | |
307 | g_try_malloc(devc->limit_samples * devc->data_width_bytes); | |
308 | if (!devc->raw_sample_buf) { | |
309 | sr_err("Sample buffer malloc failed."); | |
310 | return FALSE; | |
311 | } | |
312 | } | |
313 | ||
314 | if (devc->num_transfers < | |
315 | (devc->limit_samples_max * devc->data_width_bytes)) { | |
316 | uint8_t byte; | |
317 | ||
318 | if (ipdbg_la_tcp_receive(tcp, &byte) == 1) { | |
319 | if (devc->num_transfers < | |
320 | (devc->limit_samples * devc->data_width_bytes)) | |
321 | devc->raw_sample_buf[devc->num_transfers] = byte; | |
322 | ||
323 | devc->num_transfers++; | |
324 | } | |
325 | } else { | |
326 | if (devc->delay_value > 0) { | |
327 | /* There are pre-trigger samples, send those first. */ | |
328 | packet.type = SR_DF_LOGIC; | |
329 | packet.payload = &logic; | |
330 | logic.length = devc->delay_value * devc->data_width_bytes; | |
331 | logic.unitsize = devc->data_width_bytes; | |
332 | logic.data = devc->raw_sample_buf; | |
333 | sr_session_send(cb_data, &packet); | |
334 | } | |
335 | ||
336 | /* Send the trigger. */ | |
337 | packet.type = SR_DF_TRIGGER; | |
338 | sr_session_send(cb_data, &packet); | |
339 | ||
340 | /* Send post-trigger samples. */ | |
341 | packet.type = SR_DF_LOGIC; | |
342 | packet.payload = &logic; | |
343 | logic.length = (devc->limit_samples - devc->delay_value) * | |
344 | devc->data_width_bytes; | |
345 | logic.unitsize = devc->data_width_bytes; | |
346 | logic.data = devc->raw_sample_buf + | |
347 | (devc->delay_value * devc->data_width_bytes); | |
348 | sr_session_send(cb_data, &packet); | |
349 | ||
350 | g_free(devc->raw_sample_buf); | |
351 | devc->raw_sample_buf = NULL; | |
352 | ||
353 | ipdbg_la_abort_acquisition(sdi); | |
354 | } | |
355 | ||
356 | return TRUE; | |
357 | } | |
358 | ||
359 | static int send_escaping(struct ipdbg_la_tcp *tcp, uint8_t *data_to_send, | |
360 | uint32_t length) | |
361 | { | |
362 | uint8_t escape = CMD_ESCAPE; | |
363 | ||
364 | while (length--) { | |
365 | uint8_t payload = *data_to_send++; | |
366 | ||
367 | if (payload == CMD_RESET) | |
368 | if (tcp_send(tcp, &escape, 1) != SR_OK) | |
369 | sr_warn("Couldn't send escape"); | |
370 | ||
371 | if (payload == CMD_ESCAPE) | |
372 | if (tcp_send(tcp, &escape, 1) != SR_OK) | |
373 | sr_warn("Couldn't send escape"); | |
374 | ||
375 | if (tcp_send(tcp, &payload, 1) != SR_OK) | |
376 | sr_warn("Couldn't send data"); | |
377 | } | |
378 | ||
379 | return SR_OK; | |
380 | } | |
381 | ||
382 | SR_PRIV int ipdbg_la_send_delay(struct dev_context *devc, | |
383 | struct ipdbg_la_tcp *tcp) | |
384 | { | |
385 | devc->delay_value = (devc->limit_samples / 100.0) * devc->capture_ratio; | |
386 | ||
387 | uint8_t buf; | |
388 | buf = CMD_CFG_LA; | |
389 | tcp_send(tcp, &buf, 1); | |
390 | buf = CMD_LA_DELAY; | |
391 | tcp_send(tcp, &buf, 1); | |
392 | ||
393 | uint8_t delay_buf[4] = { devc->delay_value & 0x000000ff, | |
394 | (devc->delay_value >> 8) & 0x000000ff, | |
395 | (devc->delay_value >> 16) & 0x000000ff, | |
396 | (devc->delay_value >> 24) & 0x000000ff | |
397 | }; | |
398 | ||
399 | for (uint64_t i = 0; i < devc->addr_width_bytes; i++) | |
400 | send_escaping(tcp, &(delay_buf[devc->addr_width_bytes - 1 - i]), 1); | |
401 | ||
402 | return SR_OK; | |
403 | } | |
404 | ||
405 | SR_PRIV int ipdbg_la_send_trigger(struct dev_context *devc, | |
406 | struct ipdbg_la_tcp *tcp) | |
407 | { | |
408 | uint8_t buf; | |
409 | ||
410 | /* Mask */ | |
411 | buf = CMD_CFG_TRIGGER; | |
412 | tcp_send(tcp, &buf, 1); | |
413 | buf = CMD_TRIG_MASKS; | |
414 | tcp_send(tcp, &buf, 1); | |
415 | buf = CMD_TRIG_MASK; | |
416 | tcp_send(tcp, &buf, 1); | |
417 | ||
418 | for (size_t i = 0; i < devc->data_width_bytes; i++) | |
419 | send_escaping(tcp, | |
420 | devc->trigger_mask + devc->data_width_bytes - 1 - i, 1); | |
421 | ||
422 | /* Value */ | |
423 | buf = CMD_CFG_TRIGGER; | |
424 | tcp_send(tcp, &buf, 1); | |
425 | buf = CMD_TRIG_MASKS; | |
426 | tcp_send(tcp, &buf, 1); | |
427 | buf = CMD_TRIG_VALUE; | |
428 | tcp_send(tcp, &buf, 1); | |
429 | ||
430 | for (size_t i = 0; i < devc->data_width_bytes; i++) | |
431 | send_escaping(tcp, | |
432 | devc->trigger_value + devc->data_width_bytes - 1 - i, 1); | |
433 | ||
434 | /* Mask_last */ | |
435 | buf = CMD_CFG_TRIGGER; | |
436 | tcp_send(tcp, &buf, 1); | |
437 | buf = CMD_TRIG_MASKS_LAST; | |
438 | tcp_send(tcp, &buf, 1); | |
439 | buf = CMD_TRIG_MASK_LAST; | |
440 | tcp_send(tcp, &buf, 1); | |
441 | ||
442 | for (size_t i = 0; i < devc->data_width_bytes; i++) | |
443 | send_escaping(tcp, | |
444 | devc->trigger_mask_last + devc->data_width_bytes - 1 - i, 1); | |
445 | ||
446 | /* Value_last */ | |
447 | buf = CMD_CFG_TRIGGER; | |
448 | tcp_send(tcp, &buf, 1); | |
449 | buf = CMD_TRIG_MASKS_LAST; | |
450 | tcp_send(tcp, &buf, 1); | |
451 | buf = CMD_TRIG_VALUE_LAST; | |
452 | tcp_send(tcp, &buf, 1); | |
453 | ||
454 | for (size_t i = 0; i < devc->data_width_bytes; i++) | |
455 | send_escaping(tcp, | |
456 | devc->trigger_value_last + devc->data_width_bytes - 1 - i, 1); | |
457 | ||
458 | /* Edge_mask */ | |
459 | buf = CMD_CFG_TRIGGER; | |
460 | tcp_send(tcp, &buf, 1); | |
461 | buf = CMD_TRIG_SELECT_EDGE_MASK; | |
462 | tcp_send(tcp, &buf, 1); | |
463 | buf = CMD_TRIG_SET_EDGE_MASK; | |
464 | tcp_send(tcp, &buf, 1); | |
465 | ||
466 | for (size_t i = 0; i < devc->data_width_bytes; i++) | |
467 | send_escaping(tcp, | |
468 | devc->trigger_edge_mask + devc->data_width_bytes - 1 - i, 1); | |
469 | ||
470 | return SR_OK; | |
471 | } | |
472 | ||
473 | SR_PRIV void ipdbg_la_get_addrwidth_and_datawidth( | |
474 | struct ipdbg_la_tcp *tcp, struct dev_context *devc) | |
475 | { | |
476 | uint8_t buf[8]; | |
477 | uint8_t read_cmd = CMD_GET_BUS_WIDTHS; | |
478 | ||
479 | if (tcp_send(tcp, &read_cmd, 1) != SR_OK) | |
480 | sr_warn("Can't send read command"); | |
481 | ||
482 | if (tcp_receive_blocking(tcp, buf, 8) != 8) | |
483 | sr_warn("Can't get address and data width from device"); | |
484 | ||
485 | devc->data_width = buf[0] & 0x000000FF; | |
486 | devc->data_width |= (buf[1] << 8) & 0x0000FF00; | |
487 | devc->data_width |= (buf[2] << 16) & 0x00FF0000; | |
488 | devc->data_width |= (buf[3] << 24) & 0xFF000000; | |
489 | ||
490 | devc->addr_width = buf[4] & 0x000000FF; | |
491 | devc->addr_width |= (buf[5] << 8) & 0x0000FF00; | |
492 | devc->addr_width |= (buf[6] << 16) & 0x00FF0000; | |
493 | devc->addr_width |= (buf[7] << 24) & 0xFF000000; | |
494 | ||
495 | const uint8_t host_word_size = 8; | |
496 | ||
497 | devc->data_width_bytes = | |
498 | (devc->data_width + host_word_size - 1) / host_word_size; | |
499 | devc->addr_width_bytes = | |
500 | (devc->addr_width + host_word_size - 1) / host_word_size; | |
501 | ||
502 | devc->limit_samples_max = (0x01 << devc->addr_width); | |
503 | devc->limit_samples = devc->limit_samples_max; | |
504 | ||
505 | devc->trigger_mask = g_malloc0(devc->data_width_bytes); | |
506 | devc->trigger_value = g_malloc0(devc->data_width_bytes); | |
507 | devc->trigger_mask_last = g_malloc0(devc->data_width_bytes); | |
508 | devc->trigger_value_last = g_malloc0(devc->data_width_bytes); | |
509 | devc->trigger_edge_mask = g_malloc0(devc->data_width_bytes); | |
510 | } | |
511 | ||
512 | SR_PRIV struct dev_context *ipdbg_la_dev_new(void) | |
513 | { | |
514 | struct dev_context *devc; | |
515 | ||
516 | devc = g_malloc0(sizeof(struct dev_context)); | |
517 | devc->capture_ratio = 50; | |
518 | ||
519 | return devc; | |
520 | } | |
521 | ||
522 | SR_PRIV int ipdbg_la_send_reset(struct ipdbg_la_tcp *tcp) | |
523 | { | |
524 | uint8_t buf = CMD_RESET; | |
525 | if (tcp_send(tcp, &buf, 1) != SR_OK) | |
526 | sr_warn("Couldn't send reset"); | |
527 | ||
528 | return SR_OK; | |
529 | } | |
530 | ||
531 | SR_PRIV int ipdbg_la_request_id(struct ipdbg_la_tcp *tcp) | |
532 | { | |
533 | uint8_t buf = CMD_GET_LA_ID; | |
534 | if (tcp_send(tcp, &buf, 1) != SR_OK) | |
535 | sr_warn("Couldn't send ID request"); | |
536 | ||
537 | char id[4]; | |
538 | if (tcp_receive_blocking(tcp, (uint8_t *)id, 4) != 4) { | |
539 | sr_err("Couldn't read device ID"); | |
540 | return SR_ERR; | |
541 | } | |
542 | ||
543 | if (strncmp(id, "IDBG", 4)) { | |
544 | sr_err("Invalid device ID: expected 'IDBG', got '%c%c%c%c'.", | |
545 | id[0], id[1], id[2], id[3]); | |
546 | return SR_ERR; | |
547 | } | |
548 | ||
549 | return SR_OK; | |
550 | } | |
551 | ||
552 | SR_PRIV void ipdbg_la_abort_acquisition(const struct sr_dev_inst *sdi) | |
553 | { | |
554 | struct ipdbg_la_tcp *tcp = sdi->conn; | |
555 | ||
556 | sr_session_source_remove(sdi->session, tcp->socket); | |
557 | ||
558 | std_session_send_df_end(sdi); | |
559 | } | |
560 | ||
561 | SR_PRIV int ipdbg_la_send_start(struct ipdbg_la_tcp *tcp) | |
562 | { | |
563 | uint8_t buf = CMD_START; | |
564 | ||
565 | if (tcp_send(tcp, &buf, 1) != SR_OK) | |
566 | sr_warn("Couldn't send start"); | |
567 | ||
568 | return SR_OK; | |
569 | } |