[libsigrok.git] / src / hardware / beaglelogic / beaglelogic_tcp.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2017 Kumar Abhishek <abhishek@theembeddedkitchen.net>
 * Portions of the code are adapted from scpi_tcp.c and scpi.c, their
 * copyright notices are listed below:
 *
 * Copyright (C) 2013 Martin Ling <martin-sigrok@earth.li>
 * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#ifdef _WIN32
#define _WIN32_WINNT 0x0501
#include <winsock2.h>
#include <ws2tcpip.h>
#endif
#include <glib.h>
#include <string.h>
#include <unistd.h>
#ifndef _WIN32
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#endif
#include <errno.h>

#include "protocol.h"
#include "beaglelogic.h"

static int beaglelogic_tcp_open(struct dev_context *devc)
{
	struct addrinfo hints;
	struct addrinfo *results, *res;
	int err;

	memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_UNSPEC;
	hints.ai_socktype = SOCK_STREAM;
	hints.ai_protocol = IPPROTO_TCP;

	err = getaddrinfo(devc->address, devc->port, &hints, &results);

	if (err) {
		sr_err("Address lookup failed: %s:%s: %s", devc->address,
			devc->port, gai_strerror(err));
		return SR_ERR;
	}

	for (res = results; res; res = res->ai_next) {
		if ((devc->socket = socket(res->ai_family, res->ai_socktype,
						res->ai_protocol)) < 0)
			continue;
		if (connect(devc->socket, res->ai_addr, res->ai_addrlen) != 0) {
			close(devc->socket);
			devc->socket = -1;
			continue;
		}
		break;
	}

	freeaddrinfo(results);

	if (devc->socket < 0) {
		sr_err("Failed to connect to %s:%s: %s", devc->address,
			devc->port, g_strerror(errno));
		return SR_ERR;
	}

	return SR_OK;
}

static int beaglelogic_tcp_send_cmd(struct dev_context *devc,
				    const char *format, ...)
{
	int len, out;
	va_list args, args_copy;
	char *buf;

	va_start(args, format);
	va_copy(args_copy, args);
	len = vsnprintf(NULL, 0, format, args_copy);
	va_end(args_copy);

	buf = g_malloc0(len + 2);
	vsprintf(buf, format, args);
	va_end(args);

	if (buf[len - 1] != '\n')
		buf[len] = '\n';

	out = send(devc->socket, buf, strlen(buf), 0);

	if (out < 0) {
		sr_err("Send error: %s", g_strerror(errno));
		return SR_ERR;
	}

	if (out < (int)strlen(buf)) {
		sr_dbg("Only sent %d/%lu bytes of command: '%s'.", out,
		       strlen(buf), buf);
	}

	sr_spew("Sent command: '%s'.", buf);
	g_free(buf);

	return SR_OK;
}

static int beaglelogic_tcp_read_data(struct dev_context *devc, char *buf,
				     int maxlen)
{
	int len;

	len = recv(devc->socket, buf, maxlen, 0);

	if (len < 0) {
		sr_err("Receive error: %s", g_strerror(errno));
		return SR_ERR;
	}

	return len;
}

SR_PRIV int beaglelogic_tcp_drain(struct dev_context *devc)
{
	char *buf = g_malloc(1024);
	fd_set rset;
	int ret, len = 0;
	struct timeval tv;

	FD_ZERO(&rset);
	FD_SET(devc->socket, &rset);

	/* 25ms timeout */
	tv.tv_sec = 0;
	tv.tv_usec = 25 * 1000;

	do {
		ret = select(devc->socket + 1, &rset, NULL, NULL, &tv);
		if (ret > 0) {
			len += beaglelogic_tcp_read_data(devc, buf, 1024);
		}
	} while (ret > 0);

	sr_spew("Drained %d bytes of data.", len);

	g_free(buf);
	return SR_OK;
}

static int beaglelogic_tcp_get_string(struct dev_context *devc, const char *cmd,
				      char **tcp_resp)
{
	GString *response = g_string_sized_new(1024);
	int len;
	gint64 timeout;

	if (cmd) {
		if (beaglelogic_tcp_send_cmd(devc, cmd) != SR_OK) {
			return SR_ERR;
		}
	}

	timeout = g_get_monotonic_time() + devc->read_timeout;
	len = beaglelogic_tcp_read_data(devc, response->str,
					response->allocated_len);

	if (len < 0) {
		g_string_free(response, TRUE);
		return SR_ERR;
	}

	if (len > 0) {
		g_string_set_size(response, len);
	}

	if (g_get_monotonic_time() > timeout) {
		sr_err("Timed out waiting for response.");
		g_string_free(response, TRUE);
		return SR_ERR_TIMEOUT;
	}

	/* Remove trailing newline if present */
	if (response->len >= 1 && response->str[response->len - 1] == '\n')
		g_string_truncate(response, response->len - 1);

	/* Remove trailing carriage return if present */
	if (response->len >= 1 && response->str[response->len - 1] == '\r')
		g_string_truncate(response, response->len - 1);

	sr_spew("Got response: '%.70s', length %" G_GSIZE_FORMAT ".",
		response->str, response->len);

	*tcp_resp = g_string_free(response, FALSE);
	return SR_OK;
}

static int beaglelogic_tcp_get_int(struct dev_context *devc,
				   const char *cmd, int *response)
{
	int ret;
	char *resp = NULL;

	ret = beaglelogic_tcp_get_string(devc, cmd, &resp);
	if (!resp && ret != SR_OK)
		return ret;

	if (sr_atoi(resp, response) == SR_OK)
		ret = SR_OK;
	else
		ret = SR_ERR_DATA;

	g_free(resp);

	return ret;
}

SR_PRIV int beaglelogic_tcp_detect(struct dev_context *devc)
{
	char *resp = NULL;
	int ret;

	ret = beaglelogic_tcp_get_string(devc, "version", &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "BeagleLogic", 11))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int beaglelogic_open(struct dev_context *devc)
{
	return beaglelogic_tcp_open(devc);
}

static int beaglelogic_close(struct dev_context *devc)
{
	if (close(devc->socket) < 0)
		return SR_ERR;

	return SR_OK;
}

static int beaglelogic_get_buffersize(struct dev_context *devc)
{
	return beaglelogic_tcp_get_int(devc, "memalloc",
		(int *)&devc->buffersize);
}

static int beaglelogic_set_buffersize(struct dev_context *devc)
{
	int ret;
	char *resp;

	beaglelogic_tcp_send_cmd(devc, "memalloc %lu", devc->buffersize);
	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int beaglelogic_get_samplerate(struct dev_context *devc)
{
	int arg, err;
	err = beaglelogic_tcp_get_int(devc, "samplerate", &arg);
	devc->cur_samplerate = arg;
	return err;
}

static int beaglelogic_set_samplerate(struct dev_context *devc)
{
	int ret;
	char *resp;

	beaglelogic_tcp_send_cmd(devc, "samplerate %lu",
		(uint32_t)devc->cur_samplerate);
	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int beaglelogic_get_sampleunit(struct dev_context *devc)
{
	return beaglelogic_tcp_get_int(devc, "sampleunit",
		(int *)&devc->sampleunit);
}

static int beaglelogic_set_sampleunit(struct dev_context *devc)
{
	int ret;
	char *resp;

	beaglelogic_tcp_send_cmd(devc, "sampleunit %lu", devc->sampleunit);
	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int beaglelogic_get_triggerflags(struct dev_context *devc)
{
	return beaglelogic_tcp_get_int(devc, "triggerflags",
		(int *)&devc->triggerflags);
}

static int beaglelogic_set_triggerflags(struct dev_context *devc)
{
	int ret;
	char *resp;

	beaglelogic_tcp_send_cmd(devc, "triggerflags %lu", devc->triggerflags);
	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int beaglelogic_get_lasterror(struct dev_context *devc)
{
	devc->last_error = 0;
	return SR_OK;
}

static int beaglelogic_start(struct dev_context *devc)
{
	beaglelogic_tcp_drain(devc);
	return beaglelogic_tcp_send_cmd(devc, "get");
}

static int beaglelogic_stop(struct dev_context *devc)
{
	return beaglelogic_tcp_send_cmd(devc, "close");
}

static int beaglelogic_get_bufunitsize(struct dev_context *devc)
{
	return beaglelogic_tcp_get_int(devc, "bufunitsize",
		(int *)&devc->bufunitsize);
}

static int beaglelogic_set_bufunitsize(struct dev_context *devc)
{
	int ret;
	char *resp;

	beaglelogic_tcp_send_cmd(devc, "bufunitsize %ld", devc->bufunitsize);
	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
		ret = SR_OK;
	else
		ret = SR_ERR;

	g_free(resp);
	return ret;
}

static int dummy(struct dev_context *devc)
{
	(void)devc;
	return SR_ERR_NA;
}

SR_PRIV const struct beaglelogic_ops beaglelogic_tcp_ops = {
	.open = beaglelogic_open,
	.close = beaglelogic_close,
	.get_buffersize = beaglelogic_get_buffersize,
	.set_buffersize = beaglelogic_set_buffersize,
	.get_samplerate = beaglelogic_get_samplerate,
	.set_samplerate = beaglelogic_set_samplerate,
	.get_sampleunit = beaglelogic_get_sampleunit,
	.set_sampleunit = beaglelogic_set_sampleunit,
	.get_triggerflags = beaglelogic_get_triggerflags,
	.set_triggerflags = beaglelogic_set_triggerflags,
	.start = beaglelogic_start,
	.stop = beaglelogic_stop,
	.get_lasterror = beaglelogic_get_lasterror,
	.get_bufunitsize = beaglelogic_get_bufunitsize,
	.set_bufunitsize = beaglelogic_set_bufunitsize,
	.mmap = dummy,
	.munmap = dummy,
};
Commit	Line	Data
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
3124d3bc KA	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)
a31010b3 KA	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, ...)
a31010b3 KA	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));
	110	return SR_ERR;
	111	}
	112
	113	if (out < (int)strlen(buf)) {
f154b40d	114	sr_dbg("Only sent %d/%lu bytes of command: '%s'.", out,
9b2b3ef9 KA	115	strlen(buf), buf);
	116	}
	117
	118	sr_spew("Sent command: '%s'.", buf);
	119	g_free(buf);
	120
	121	return SR_OK;
	122	}
	123
	124	static int beaglelogic_tcp_read_data(struct dev_context devc, char buf,
a31010b3 KA	125	int maxlen)
a31010b3 KA	126	{
9b2b3ef9 KA	127	int len;
	128
	129	len = recv(devc->socket, buf, maxlen, 0);
	130
	131	if (len < 0) {
	132	sr_err("Receive error: %s", g_strerror(errno));
	133	return SR_ERR;
	134	}
	135
	136	return len;
	137	}
	138
a31010b3 KA	139	SR_PRIV int beaglelogic_tcp_drain(struct dev_context *devc)
a31010b3 KA	140	{
f7d7ee82 KA	141	char *buf = g_malloc(1024);
	142	fd_set rset;
	143	int ret, len = 0;
	144	struct timeval tv;
	145
	146	FD_ZERO(&rset);
	147	FD_SET(devc->socket, &rset);
	148
	149	/* 25ms timeout */
	150	tv.tv_sec = 0;
	151	tv.tv_usec = 25 * 1000;
	152
	153	do {
	154	ret = select(devc->socket + 1, &rset, NULL, NULL, &tv);
	155	if (ret > 0) {
	156	len += beaglelogic_tcp_read_data(devc, buf, 1024);
	157	}
	158	} while (ret > 0);
	159
	160	sr_spew("Drained %d bytes of data.", len);
	161
	162	g_free(buf);
	163	return SR_OK;
	164	}
	165
9b2b3ef9	166	static int beaglelogic_tcp_get_string(struct dev_context devc, const char cmd,
a31010b3 KA	167	char **tcp_resp)
a31010b3 KA	168	{
9b2b3ef9 KA	169	GString *response = g_string_sized_new(1024);
	170	int len;
	171	gint64 timeout;
	172
	173	if (cmd) {
	174	if (beaglelogic_tcp_send_cmd(devc, cmd) != SR_OK) {
	175	return SR_ERR;
	176	}
	177	}
	178
	179	timeout = g_get_monotonic_time() + devc->read_timeout;
	180	len = beaglelogic_tcp_read_data(devc, response->str,
	181	response->allocated_len);
	182
	183	if (len < 0) {
	184	g_string_free(response, TRUE);
	185	return SR_ERR;
	186	}
	187
	188	if (len > 0) {
	189	g_string_set_size(response, len);
	190	}
	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);
	210	return SR_OK;
	211	}
	212
	213	static int beaglelogic_tcp_get_int(struct dev_context *devc,
a31010b3 KA	214	const char cmd, int response)
a31010b3 KA	215	{
9b2b3ef9 KA	216	int ret;
	217	char *resp = NULL;
	218
	219	ret = beaglelogic_tcp_get_string(devc, cmd, &resp);
	220	if (!resp && ret != SR_OK)
	221	return ret;
	222
	223	if (sr_atoi(resp, response) == SR_OK)
	224	ret = SR_OK;
	225	else
	226	ret = SR_ERR_DATA;
	227
	228	g_free(resp);
	229
	230	return ret;
	231	}
	232
a31010b3 KA	233	SR_PRIV int beaglelogic_tcp_detect(struct dev_context *devc)
a31010b3 KA	234	{
9b2b3ef9 KA	235	char *resp = NULL;
	236	int ret;
	237
	238	ret = beaglelogic_tcp_get_string(devc, "version", &resp);
	239	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "BeagleLogic", 11))
	240	ret = SR_OK;
	241	else
	242	ret = SR_ERR;
	243
	244	g_free(resp);
	245	return ret;
	246	}
	247
a31010b3 KA	248	static int beaglelogic_open(struct dev_context *devc)
a31010b3 KA	249	{
9b2b3ef9 KA	250	return beaglelogic_tcp_open(devc);
	251	}
	252
a31010b3 KA	253	static int beaglelogic_close(struct dev_context *devc)
a31010b3 KA	254	{
9b2b3ef9 KA	255	if (close(devc->socket) < 0)
	256	return SR_ERR;
	257
	258	return SR_OK;
	259	}
	260
a31010b3 KA	261	static int beaglelogic_get_buffersize(struct dev_context *devc)
a31010b3 KA	262	{
9b2b3ef9 KA	263	return beaglelogic_tcp_get_int(devc, "memalloc",
	264	(int *)&devc->buffersize);
	265	}
	266
a31010b3 KA	267	static int beaglelogic_set_buffersize(struct dev_context *devc)
a31010b3 KA	268	{
9b2b3ef9 KA	269	int ret;
	270	char *resp;
	271
	272	beaglelogic_tcp_send_cmd(devc, "memalloc %lu", devc->buffersize);
	273	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	274	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
	275	ret = SR_OK;
	276	else
	277	ret = SR_ERR;
	278
	279	g_free(resp);
	280	return ret;
	281	}
	282
a31010b3 KA	283	static int beaglelogic_get_samplerate(struct dev_context *devc)
a31010b3 KA	284	{
9b2b3ef9 KA	285	int arg, err;
	286	err = beaglelogic_tcp_get_int(devc, "samplerate", &arg);
	287	devc->cur_samplerate = arg;
	288	return err;
	289	}
	290
a31010b3 KA	291	static int beaglelogic_set_samplerate(struct dev_context *devc)
a31010b3 KA	292	{
9b2b3ef9 KA	293	int ret;
	294	char *resp;
	295
	296	beaglelogic_tcp_send_cmd(devc, "samplerate %lu",
	297	(uint32_t)devc->cur_samplerate);
	298	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	299	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
	300	ret = SR_OK;
	301	else
	302	ret = SR_ERR;
	303
	304	g_free(resp);
	305	return ret;
	306	}
	307
a31010b3 KA	308	static int beaglelogic_get_sampleunit(struct dev_context *devc)
a31010b3 KA	309	{
9b2b3ef9 KA	310	return beaglelogic_tcp_get_int(devc, "sampleunit",
	311	(int *)&devc->sampleunit);
	312	}
	313
a31010b3 KA	314	static int beaglelogic_set_sampleunit(struct dev_context *devc)
a31010b3 KA	315	{
9b2b3ef9 KA	316	int ret;
	317	char *resp;
	318
	319	beaglelogic_tcp_send_cmd(devc, "sampleunit %lu", devc->sampleunit);
	320	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	321	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
	322	ret = SR_OK;
	323	else
	324	ret = SR_ERR;
	325
	326	g_free(resp);
	327	return ret;
	328	}
	329
a31010b3 KA	330	static int beaglelogic_get_triggerflags(struct dev_context *devc)
a31010b3 KA	331	{
9b2b3ef9 KA	332	return beaglelogic_tcp_get_int(devc, "triggerflags",
	333	(int *)&devc->triggerflags);
	334	}
	335
a31010b3 KA	336	static int beaglelogic_set_triggerflags(struct dev_context *devc)
a31010b3 KA	337	{
9b2b3ef9 KA	338	int ret;
	339	char *resp;
	340
	341	beaglelogic_tcp_send_cmd(devc, "triggerflags %lu", devc->triggerflags);
	342	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	343	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
	344	ret = SR_OK;
	345	else
	346	ret = SR_ERR;
	347
	348	g_free(resp);
	349	return ret;
	350	}
	351
a31010b3 KA	352	static int beaglelogic_get_lasterror(struct dev_context *devc)
a31010b3 KA	353	{
9b2b3ef9 KA	354	devc->last_error = 0;
	355	return SR_OK;
	356	}
	357
a31010b3 KA	358	static int beaglelogic_start(struct dev_context *devc)
a31010b3 KA	359	{
f7d7ee82	360	beaglelogic_tcp_drain(devc);
9b2b3ef9 KA	361	return beaglelogic_tcp_send_cmd(devc, "get");
	362	}
	363
a31010b3 KA	364	static int beaglelogic_stop(struct dev_context *devc)
a31010b3 KA	365	{
9b2b3ef9 KA	366	return beaglelogic_tcp_send_cmd(devc, "close");
	367	}
	368
a31010b3 KA	369	static int beaglelogic_get_bufunitsize(struct dev_context *devc)
a31010b3 KA	370	{
9b2b3ef9 KA	371	return beaglelogic_tcp_get_int(devc, "bufunitsize",
	372	(int *)&devc->bufunitsize);
	373	}
	374
a31010b3 KA	375	static int beaglelogic_set_bufunitsize(struct dev_context *devc)
a31010b3 KA	376	{
9b2b3ef9 KA	377	int ret;
	378	char *resp;
	379
	380	beaglelogic_tcp_send_cmd(devc, "bufunitsize %ld", devc->bufunitsize);
	381	ret = beaglelogic_tcp_get_string(devc, NULL, &resp);
	382	if (ret == SR_OK && !g_ascii_strncasecmp(resp, "ok", 2))
	383	ret = SR_OK;
	384	else
	385	ret = SR_ERR;
	386
	387	g_free(resp);
	388	return ret;
	389	}
	390
a31010b3 KA	391	static int dummy(struct dev_context *devc)
a31010b3 KA	392	{
f154b40d	393	(void)devc;
9b2b3ef9 KA	394	return SR_ERR_NA;
	395	}
	396
	397	SR_PRIV const struct beaglelogic_ops beaglelogic_tcp_ops = {
	398	.open = beaglelogic_open,
	399	.close = beaglelogic_close,
	400	.get_buffersize = beaglelogic_get_buffersize,
	401	.set_buffersize = beaglelogic_set_buffersize,
	402	.get_samplerate = beaglelogic_get_samplerate,
	403	.set_samplerate = beaglelogic_set_samplerate,
	404	.get_sampleunit = beaglelogic_get_sampleunit,
	405	.set_sampleunit = beaglelogic_set_sampleunit,
	406	.get_triggerflags = beaglelogic_get_triggerflags,
	407	.set_triggerflags = beaglelogic_set_triggerflags,
	408	.start = beaglelogic_start,
	409	.stop = beaglelogic_stop,
	410	.get_lasterror = beaglelogic_get_lasterror,
	411	.get_bufunitsize = beaglelogic_get_bufunitsize,
	412	.set_bufunitsize = beaglelogic_set_bufunitsize,
	413	.mmap = dummy,
	414	.munmap = dummy,
	415	};