2 * This file is part of the libsigrok project.
4 * Copyright (C) 2017 Kumar Abhishek <abhishek@theembeddedkitchen.net>
5 * Portions of the code are adapted from scpi_tcp.c and scpi.c, their
6 * copyright notices are listed below:
8 * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li>
9 * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
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.
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.
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/>.
27 #define _WIN32_WINNT 0x0501
35 #include <sys/socket.h>
36 #include <netinet/in.h>
37 #include <arpa/inet.h>
43 #include "beaglelogic.h"
45 static int beaglelogic_tcp_open(struct dev_context *devc) {
46 struct addrinfo hints;
47 struct addrinfo *results, *res;
50 memset(&hints, 0, sizeof(hints));
51 hints.ai_family = AF_UNSPEC;
52 hints.ai_socktype = SOCK_STREAM;
53 hints.ai_protocol = IPPROTO_TCP;
55 err = getaddrinfo(devc->address, devc->port, &hints, &results);
58 sr_err("Address lookup failed: %s:%s: %s", devc->address,
59 devc->port, gai_strerror(err));
63 for (res = results; res; res = res->ai_next) {
64 if ((devc->socket = socket(res->ai_family, res->ai_socktype,
65 res->ai_protocol)) < 0)
67 if (connect(devc->socket, res->ai_addr, res->ai_addrlen) != 0) {
75 freeaddrinfo(results);
77 if (devc->socket < 0) {
78 sr_err("Failed to connect to %s:%s: %s", devc->address,
79 devc->port, g_strerror(errno));
86 static int beaglelogic_tcp_send_cmd(struct dev_context *devc,
87 const char *format, ...) {
89 va_list args, args_copy;
92 va_start(args, format);
93 va_copy(args_copy, args);
94 len = vsnprintf(NULL, 0, format, args_copy);
97 buf = g_malloc0(len + 2);
98 vsprintf(buf, format, args);
101 if (buf[len - 1] != '\n')
104 out = send(devc->socket, buf, strlen(buf), 0);
107 sr_err("Send error: %s", g_strerror(errno));
111 if (out < (int)strlen(buf)) {
112 sr_dbg("Only sent %d/%lu bytes of command: '%s'.", out,
116 sr_spew("Sent command: '%s'.", buf);
122 static int beaglelogic_tcp_read_data(struct dev_context *devc, char *buf,
126 len = recv(devc->socket, buf, maxlen, 0);
129 sr_err("Receive error: %s", g_strerror(errno));
136 SR_PRIV int beaglelogic_tcp_drain(struct dev_context *devc) {
137 char *buf = g_malloc(1024);
143 FD_SET(devc->socket, &rset);
147 tv.tv_usec = 25 * 1000;
150 ret = select(devc->socket + 1, &rset, NULL, NULL, &tv);
152 len += beaglelogic_tcp_read_data(devc, buf, 1024);
156 sr_spew("Drained %d bytes of data.", len);
162 static int beaglelogic_tcp_get_string(struct dev_context *devc, const char *cmd,
164 GString *response = g_string_sized_new(1024);
169 if (beaglelogic_tcp_send_cmd(devc, cmd) != SR_OK) {
174 timeout = g_get_monotonic_time() + devc->read_timeout;
175 len = beaglelogic_tcp_read_data(devc, response->str,
176 response->allocated_len);
179 g_string_free(response, TRUE);
184 g_string_set_size(response, len);
187 if (g_get_monotonic_time() > timeout) {
188 sr_err("Timed out waiting for response.");
189 g_string_free(response, TRUE);
190 return SR_ERR_TIMEOUT;
193 /* Remove trailing newline if present */
194 if (response->len >= 1 && response->str[response->len - 1] == '\n')
195 g_string_truncate(response, response->len - 1);
197 /* Remove trailing carriage return if present */
198 if (response->len >= 1 && response->str[response->len - 1] == '\r')
199 g_string_truncate(response, response->len - 1);
201 sr_spew("Got response: '%.70s', length %" G_GSIZE_FORMAT ".",
202 response->str, response->len);
204 *tcp_resp = g_string_free(response, FALSE);
208 static int beaglelogic_tcp_get_int(struct dev_context *devc,
209 const char *cmd, int *response) {
213 ret = beaglelogic_tcp_get_string(devc, cmd, &resp);
214 if (!resp && ret != SR_OK)
217 if (sr_atoi(resp, response) == SR_OK)
227 SR_PRIV int beaglelogic_tcp_detect(struct dev_context *devc) {
231 ret = beaglelogic_tcp_get_string(devc, "version", &resp);
232 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "BeagleLogic", 11))
241 static int beaglelogic_open(struct dev_context *devc) {
242 return beaglelogic_tcp_open(devc);
245 static int beaglelogic_close(struct dev_context *devc) {
246 if (close(devc->socket) < 0)
252 static int beaglelogic_get_buffersize(struct dev_context *devc) {
253 return beaglelogic_tcp_get_int(devc, "memalloc",
254 (int *)&devc->buffersize);
257 static int beaglelogic_set_buffersize(struct dev_context *devc) {
261 beaglelogic_tcp_send_cmd(devc, "memalloc %lu", devc->buffersize);
262 ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
263 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
272 static int beaglelogic_get_samplerate(struct dev_context *devc) {
274 err = beaglelogic_tcp_get_int(devc, "samplerate", &arg);
275 devc->cur_samplerate = arg;
279 static int beaglelogic_set_samplerate(struct dev_context *devc) {
283 beaglelogic_tcp_send_cmd(devc, "samplerate %lu",
284 (uint32_t)devc->cur_samplerate);
285 ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
286 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
295 static int beaglelogic_get_sampleunit(struct dev_context *devc) {
296 return beaglelogic_tcp_get_int(devc, "sampleunit",
297 (int *)&devc->sampleunit);
300 static int beaglelogic_set_sampleunit(struct dev_context *devc) {
304 beaglelogic_tcp_send_cmd(devc, "sampleunit %lu", devc->sampleunit);
305 ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
306 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
315 static int beaglelogic_get_triggerflags(struct dev_context *devc) {
316 return beaglelogic_tcp_get_int(devc, "triggerflags",
317 (int *)&devc->triggerflags);
320 static int beaglelogic_set_triggerflags(struct dev_context *devc) {
324 beaglelogic_tcp_send_cmd(devc, "triggerflags %lu", devc->triggerflags);
325 ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
326 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
335 static int beaglelogic_get_lasterror(struct dev_context *devc) {
336 devc->last_error = 0;
340 static int beaglelogic_start(struct dev_context *devc) {
341 beaglelogic_tcp_drain(devc);
342 return beaglelogic_tcp_send_cmd(devc, "get");
345 static int beaglelogic_stop(struct dev_context *devc) {
346 return beaglelogic_tcp_send_cmd(devc, "close");
349 static int beaglelogic_get_bufunitsize(struct dev_context *devc) {
350 return beaglelogic_tcp_get_int(devc, "bufunitsize",
351 (int *)&devc->bufunitsize);
354 static int beaglelogic_set_bufunitsize(struct dev_context *devc) {
358 beaglelogic_tcp_send_cmd(devc, "bufunitsize %ld", devc->bufunitsize);
359 ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
360 if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
369 static int dummy(struct dev_context *devc) {
374 SR_PRIV const struct beaglelogic_ops beaglelogic_tcp_ops = {
375 .open = beaglelogic_open,
376 .close = beaglelogic_close,
377 .get_buffersize = beaglelogic_get_buffersize,
378 .set_buffersize = beaglelogic_set_buffersize,
379 .get_samplerate = beaglelogic_get_samplerate,
380 .set_samplerate = beaglelogic_set_samplerate,
381 .get_sampleunit = beaglelogic_get_sampleunit,
382 .set_sampleunit = beaglelogic_set_sampleunit,
383 .get_triggerflags = beaglelogic_get_triggerflags,
384 .set_triggerflags = beaglelogic_set_triggerflags,
385 .start = beaglelogic_start,
386 .stop = beaglelogic_stop,
387 .get_lasterror = beaglelogic_get_lasterror,
388 .get_bufunitsize = beaglelogic_get_bufunitsize,
389 .set_bufunitsize = beaglelogic_set_bufunitsize,