[libsigrok.git] / hardware / fluke-dmm / api.c

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2012 Bert Vermeulen <bert@biot.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 <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "fluke-dmm.h"

static const int32_t hwopts[] = {
	SR_CONF_CONN,
	SR_CONF_SERIALCOMM,
};

static const int32_t hwcaps[] = {
	SR_CONF_MULTIMETER,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_LIMIT_MSEC,
	SR_CONF_CONTINUOUS,
};

SR_PRIV struct sr_dev_driver flukedmm_driver_info;
static struct sr_dev_driver *di = &flukedmm_driver_info;

static char *scan_conn[] = {
	/* 287/289 */
	"115200/8n1",
	/* 187/189 */
	"9600/8n1",
	/* Scopemeter 190 series */
	"1200/8n1",
	NULL
};

static const struct flukedmm_profile supported_flukedmm[] = {
	{ FLUKE_187, "187", 100, 1000 },
	{ FLUKE_287, "287", 100, 1000 },
	{ FLUKE_190, "199B", 1000, 3500 },
};


/* Properly close and free all devices. */
static int clear_instances(void)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	GSList *l;

	if (!(drvc = di->priv))
		return SR_OK;

	drvc = di->priv;
	for (l = drvc->instances; l; l = l->next) {
		if (!(sdi = l->data))
			continue;
		if (!(devc = sdi->priv))
			continue;
		sr_serial_dev_inst_free(devc->serial);
		sr_dev_inst_free(sdi);
	}
	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	return SR_OK;
}

static int hw_init(struct sr_context *sr_ctx)
{
	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
}

static GSList *fluke_scan(const char *conn, const char *serialcomm)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_probe *probe;
	struct sr_serial_dev_inst *serial;
	GSList *devices;
	int retry, len, i, s;
	char buf[128], *b, **tokens;

	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
		return NULL;

	if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
		return NULL;

	drvc = di->priv;
	b = buf;
	retry = 0;
	devices = NULL;
	/* We'll try the discovery sequence three times in case the device
	 * is not in an idle state when we send ID. */
	while (!devices && retry < 3) {
		retry++;
		serial_flush(serial);
		if (serial_write(serial, "ID\r", 3) == -1) {
			sr_err("Unable to send ID string: %s.",
			       strerror(errno));
			continue;
		}

		/* Response is first a CMD_ACK byte (ASCII '0' for OK,
		 * or '1' to signify an error. */
		len = 128;
		serial_readline(serial, &b, &len, 150);
		if (len != 1)
			continue;
		if (buf[0] != '0')
			continue;

		/* If CMD_ACK was OK, ID string follows. */
		len = 128;
		serial_readline(serial, &b, &len, 850);
		if (len < 10)
			continue;
		if (strcspn(buf, ",") < 15)
			/* Looks like it's comma-separated. */
			tokens = g_strsplit(buf, ",", 3);
		else
			/* Fluke 199B, at least, uses semicolon. */
			tokens = g_strsplit(buf, ";", 3);
		if (!strncmp("FLUKE", tokens[0], 5)
				&& tokens[1] && tokens[2]) {
			for (i = 0; supported_flukedmm[i].model; i++) {
				if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6))
					continue;
				/* Skip leading spaces in version number. */
				for (s = 0; tokens[1][s] == ' '; s++);
				if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke",
						tokens[0] + 6, tokens[1] + s)))
					return NULL;
				if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
					sr_err("Device context malloc failed.");
					return NULL;
				}
				devc->profile = &supported_flukedmm[i];
				devc->serial = serial;
				sdi->priv = devc;
				sdi->driver = di;
				if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
					return NULL;
				sdi->probes = g_slist_append(sdi->probes, probe);
				drvc->instances = g_slist_append(drvc->instances, sdi);
				devices = g_slist_append(devices, sdi);
				break;
			}
		}
		g_strfreev(tokens);
		if (devices)
			/* Found one. */
			break;
	}
	serial_close(serial);
	if (!devices)
		sr_serial_dev_inst_free(serial);

	return devices;
}

static GSList *hw_scan(GSList *options)
{
	struct sr_config *src;
	GSList *l, *devices;
	int i;
	const char *conn, *serialcomm;

	conn = serialcomm = NULL;
	for (l = options; l; l = l->next) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_CONN:
			conn = g_variant_get_string(src->data, NULL);
			break;
		case SR_CONF_SERIALCOMM:
			serialcomm = g_variant_get_string(src->data, NULL);
			break;
		}
	}
	if (!conn)
		return NULL;

	if (serialcomm) {
		/* Use the provided comm specs. */
		devices = fluke_scan(conn, serialcomm);
	} else {
		for (i = 0; scan_conn[i]; i++) {
			if ((devices = fluke_scan(conn, scan_conn[i])))
				break;
			/* The Scopemeter 199B, at least, requires this
			 * after all the 115k/9.6k confusion. */
			g_usleep(5000);
		}
	}

	return devices;
}

static GSList *hw_dev_list(void)
{
	return ((struct drv_context *)(di->priv))->instances;
}

static int hw_dev_open(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	if (!(devc = sdi->priv)) {
		sr_err("sdi->priv was NULL.");
		return SR_ERR_BUG;
	}

	if (serial_open(devc->serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int hw_dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;

	if (devc->serial && devc->serial->fd != -1) {
		serial_close(devc->serial);
		sdi->status = SR_ST_INACTIVE;
	}

	return SR_OK;
}

static int hw_cleanup(void)
{

	clear_instances();

	return SR_OK;
}

static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR;

	if (!(devc = sdi->priv)) {
		sr_err("sdi->priv was NULL.");
		return SR_ERR_BUG;
	}

	switch (id) {
	case SR_CONF_LIMIT_MSEC:
		/* TODO: not yet implemented */
		if (g_variant_get_uint64(data) == 0) {
			sr_err("LIMIT_MSEC can't be 0.");
			return SR_ERR;
		}
		devc->limit_msec = g_variant_get_uint64(data);
		sr_dbg("Setting time limit to %" PRIu64 "ms.",
		       devc->limit_msec);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_samples = g_variant_get_uint64(data);
		sr_dbg("Setting sample limit to %" PRIu64 ".",
		       devc->limit_samples);
		break;
	default:
		sr_err("Unknown capability: %d.", id);
		return SR_ERR;
		break;
	}

	return SR_OK;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi)
{

	(void)sdi;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
		break;
	default:
		return SR_ERR_ARG;
	}

	return SR_OK;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
		void *cb_data)
{
	struct dev_context *devc;

	if (!(devc = sdi->priv)) {
		sr_err("sdi->priv was NULL.");
		return SR_ERR_BUG;
	}

	devc->cb_data = cb_data;

	/* Send header packet to the session bus. */
	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);

	/* Poll every 100ms, or whenever some data comes in. */
	sr_source_add(devc->serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi);

	if (serial_write(devc->serial, "QM\r", 3) == -1) {
		sr_err("Unable to send QM: %s.", strerror(errno));
		return SR_ERR;
	}
	devc->cmd_sent_at = g_get_monotonic_time() / 1000;
	devc->expect_response = TRUE;

	return SR_OK;
}

static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close,
	       ((struct dev_context *)(sdi->priv))->serial, DRIVER_LOG_DOMAIN);
}

SR_PRIV struct sr_dev_driver flukedmm_driver_info = {
	.name = "fluke-dmm",
	.longname = "Fluke 18x/28x series DMMs",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.scan = hw_scan,
	.dev_list = hw_dev_list,
	.dev_clear = clear_instances,
	.config_get = NULL,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
883a2e9e BV	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
	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 <glib.h>
4f958423 BV	21	#include <sys/types.h>
	22	#include <sys/stat.h>
	23	#include <fcntl.h>
	24	#include <string.h>
	25	#include <errno.h>
6f22a8ef UH	26	#include "libsigrok.h"
	27	#include "libsigrok-internal.h"
	28	#include "fluke-dmm.h"
883a2e9e	29
70424328	30	static const int32_t hwopts[] = {
1953564a BV	31	SR_CONF_CONN,
1953564a BV	32	SR_CONF_SERIALCOMM,
d3f8f141 BV	33	};
d3f8f141 BV	34
70424328	35	static const int32_t hwcaps[] = {
1953564a BV	36	SR_CONF_MULTIMETER,
	37	SR_CONF_LIMIT_SAMPLES,
	38	SR_CONF_LIMIT_MSEC,
	39	SR_CONF_CONTINUOUS,
d3f8f141 BV	40	};
d3f8f141 BV	41
e7edd64f BV	42	SR_PRIV struct sr_dev_driver flukedmm_driver_info;
e7edd64f BV	43	static struct sr_dev_driver *di = &flukedmm_driver_info;
883a2e9e	44
9fa09680 BV	45	static char *scan_conn[] = {
	46	/* 287/289 */
	47	"115200/8n1",
	48	/* 187/189 */
	49	"9600/8n1",
	50	/* Scopemeter 190 series */
	51	"1200/8n1",
	52	NULL
	53	};
	54
4f958423	55	static const struct flukedmm_profile supported_flukedmm[] = {
d4b11de0 BV	56	{ FLUKE_187, "187", 100, 1000 },
	57	{ FLUKE_287, "287", 100, 1000 },
	58	{ FLUKE_190, "199B", 1000, 3500 },
4f958423 BV	59	};
4f958423 BV	60
883a2e9e BV	61
	62	/* Properly close and free all devices. */
	63	static int clear_instances(void)
	64	{
	65	struct sr_dev_inst *sdi;
	66	struct drv_context *drvc;
	67	struct dev_context *devc;
	68	GSList *l;
	69
4f958423 BV	70	if (!(drvc = di->priv))
	71	return SR_OK;
	72
883a2e9e BV	73	drvc = di->priv;
883a2e9e BV	74	for (l = drvc->instances; l; l = l->next) {
4f958423	75	if (!(sdi = l->data))
883a2e9e	76	continue;
4f958423	77	if (!(devc = sdi->priv))
883a2e9e	78	continue;
4f958423	79	sr_serial_dev_inst_free(devc->serial);
883a2e9e BV	80	sr_dev_inst_free(sdi);
883a2e9e BV	81	}
883a2e9e BV	82	g_slist_free(drvc->instances);
	83	drvc->instances = NULL;
	84
	85	return SR_OK;
	86	}
	87
34f06b90	88	static int hw_init(struct sr_context *sr_ctx)
883a2e9e	89	{
063e7aef	90	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
883a2e9e BV	91	}
883a2e9e BV	92
41298320	93	static GSList fluke_scan(const char conn, const char *serialcomm)
883a2e9e	94	{
4f958423	95	struct sr_dev_inst *sdi;
883a2e9e	96	struct drv_context *drvc;
4f958423	97	struct dev_context *devc;
4f958423	98	struct sr_probe *probe;
58d03f03	99	struct sr_serial_dev_inst *serial;
41298320	100	GSList *devices;
58d03f03	101	int retry, len, i, s;
fb480d57	102	char buf[128], b, *tokens;
883a2e9e	103
58d03f03	104	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
4f958423	105	return NULL;
58d03f03	106
a54dd31e	107	if (serial_open(serial, SERIAL_RDWR \| SERIAL_NONBLOCK) != SR_OK)
4f958423	108	return NULL;
4f958423	109
41298320	110	drvc = di->priv;
fb480d57 BV	111	b = buf;
fb480d57 BV	112	retry = 0;
41298320	113	devices = NULL;
fb480d57 BV	114	/* We'll try the discovery sequence three times in case the device
	115	* is not in an idle state when we send ID. */
	116	while (!devices && retry < 3) {
	117	retry++;
58d03f03 BV	118	serial_flush(serial);
58d03f03 BV	119	if (serial_write(serial, "ID\r", 3) == -1) {
31d84da3 UH	120	sr_err("Unable to send ID string: %s.",
31d84da3 UH	121	strerror(errno));
fb480d57 BV	122	continue;
fb480d57 BV	123	}
4f958423	124
fb480d57 BV	125	/* Response is first a CMD_ACK byte (ASCII '0' for OK,
	126	* or '1' to signify an error. */
	127	len = 128;
58d03f03	128	serial_readline(serial, &b, &len, 150);
fb480d57 BV	129	if (len != 1)
fb480d57 BV	130	continue;
41298320	131	if (buf[0] != '0')
fb480d57	132	continue;
4f958423	133
fb480d57 BV	134	/* If CMD_ACK was OK, ID string follows. */
fb480d57 BV	135	len = 128;
9fa09680	136	serial_readline(serial, &b, &len, 850);
fb480d57 BV	137	if (len < 10)
fb480d57 BV	138	continue;
9fa09680 BV	139	if (strcspn(buf, ",") < 15)
	140	/* Looks like it's comma-separated. */
	141	tokens = g_strsplit(buf, ",", 3);
	142	else
	143	/* Fluke 199B, at least, uses semicolon. */
	144	tokens = g_strsplit(buf, ";", 3);
fb480d57 BV	145	if (!strncmp("FLUKE", tokens[0], 5)
	146	&& tokens[1] && tokens[2]) {
	147	for (i = 0; supported_flukedmm[i].model; i++) {
	148	if (strcmp(supported_flukedmm[i].modelname, tokens[0] + 6))
	149	continue;
	150	/* Skip leading spaces in version number. */
	151	for (s = 0; tokens[1][s] == ' '; s++);
	152	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Fluke",
	153	tokens[0] + 6, tokens[1] + s)))
	154	return NULL;
	155	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
31d84da3	156	sr_err("Device context malloc failed.");
fb480d57 BV	157	return NULL;
	158	}
	159	devc->profile = &supported_flukedmm[i];
58d03f03	160	devc->serial = serial;
fb480d57 BV	161	sdi->priv = devc;
	162	sdi->driver = di;
	163	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	164	return NULL;
	165	sdi->probes = g_slist_append(sdi->probes, probe);
	166	drvc->instances = g_slist_append(drvc->instances, sdi);
	167	devices = g_slist_append(devices, sdi);
	168	break;
4f958423	169	}
4f958423	170	}
fb480d57	171	g_strfreev(tokens);
9fa09680 BV	172	if (devices)
	173	/* Found one. */
	174	break;
4f958423	175	}
58d03f03 BV	176	serial_close(serial);
	177	if (!devices)
	178	sr_serial_dev_inst_free(serial);
883a2e9e BV	179
	180	return devices;
	181	}
	182
41298320 BV	183	static GSList hw_scan(GSList options)
41298320 BV	184	{
1987b8d6	185	struct sr_config *src;
41298320	186	GSList l, devices;
9fa09680	187	int i;
41298320 BV	188	const char conn, serialcomm;
	189
	190	conn = serialcomm = NULL;
	191	for (l = options; l; l = l->next) {
1987b8d6 BV	192	src = l->data;
1987b8d6 BV	193	switch (src->key) {
1953564a	194	case SR_CONF_CONN:
70424328	195	conn = g_variant_get_string(src->data, NULL);
41298320	196	break;
1953564a	197	case SR_CONF_SERIALCOMM:
70424328	198	serialcomm = g_variant_get_string(src->data, NULL);
41298320 BV	199	break;
	200	}
	201	}
	202	if (!conn)
	203	return NULL;
	204
	205	if (serialcomm) {
	206	/* Use the provided comm specs. */
	207	devices = fluke_scan(conn, serialcomm);
	208	} else {
9fa09680 BV	209	for (i = 0; scan_conn[i]; i++) {
	210	if ((devices = fluke_scan(conn, scan_conn[i])))
	211	break;
	212	/* The Scopemeter 199B, at least, requires this
	213	* after all the 115k/9.6k confusion. */
	214	g_usleep(5000);
	215	}
41298320 BV	216	}
	217
	218	return devices;
	219	}
	220
883a2e9e BV	221	static GSList *hw_dev_list(void)
883a2e9e BV	222	{
0e94d524	223	return ((struct drv_context *)(di->priv))->instances;
883a2e9e BV	224	}
	225
	226	static int hw_dev_open(struct sr_dev_inst *sdi)
	227	{
41298320	228	struct dev_context *devc;
883a2e9e	229
41298320	230	if (!(devc = sdi->priv)) {
31d84da3	231	sr_err("sdi->priv was NULL.");
41298320 BV	232	return SR_ERR_BUG;
	233	}
	234
a54dd31e	235	if (serial_open(devc->serial, SERIAL_RDWR \| SERIAL_NONBLOCK) != SR_OK)
41298320	236	return SR_ERR;
58d03f03	237
41298320	238	sdi->status = SR_ST_ACTIVE;
883a2e9e BV	239
	240	return SR_OK;
	241	}
	242
	243	static int hw_dev_close(struct sr_dev_inst *sdi)
	244	{
d3f8f141	245	struct dev_context *devc;
883a2e9e	246
961009b0	247	devc = sdi->priv;
d3f8f141 BV	248
d3f8f141 BV	249	if (devc->serial && devc->serial->fd != -1) {
58d03f03	250	serial_close(devc->serial);
d3f8f141 BV	251	sdi->status = SR_ST_INACTIVE;
d3f8f141 BV	252	}
883a2e9e BV	253
	254	return SR_OK;
	255	}
	256
	257	static int hw_cleanup(void)
	258	{
	259
	260	clear_instances();
	261
883a2e9e BV	262	return SR_OK;
	263	}
	264
70424328	265	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi)
883a2e9e	266	{
d3f8f141	267	struct dev_context *devc;
883a2e9e BV	268
	269	if (sdi->status != SR_ST_ACTIVE)
	270	return SR_ERR;
	271
d3f8f141	272	if (!(devc = sdi->priv)) {
31d84da3	273	sr_err("sdi->priv was NULL.");
d3f8f141 BV	274	return SR_ERR_BUG;
	275	}
	276
035a1078	277	switch (id) {
1953564a	278	case SR_CONF_LIMIT_MSEC:
d3f8f141	279	/* TODO: not yet implemented */
70424328	280	if (g_variant_get_uint64(data) == 0) {
31d84da3	281	sr_err("LIMIT_MSEC can't be 0.");
d3f8f141 BV	282	return SR_ERR;
d3f8f141 BV	283	}
70424328	284	devc->limit_msec = g_variant_get_uint64(data);
31d84da3	285	sr_dbg("Setting time limit to %" PRIu64 "ms.",
d3f8f141 BV	286	devc->limit_msec);
d3f8f141 BV	287	break;
1953564a	288	case SR_CONF_LIMIT_SAMPLES:
70424328	289	devc->limit_samples = g_variant_get_uint64(data);
31d84da3	290	sr_dbg("Setting sample limit to %" PRIu64 ".",
d3f8f141 BV	291	devc->limit_samples);
d3f8f141 BV	292	break;
883a2e9e	293	default:
035a1078	294	sr_err("Unknown capability: %d.", id);
d3f8f141 BV	295	return SR_ERR;
d3f8f141 BV	296	break;
883a2e9e BV	297	}
883a2e9e BV	298
d3f8f141	299	return SR_OK;
883a2e9e BV	300	}
883a2e9e BV	301
70424328	302	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
a1c743fc BV	303	{
	304
	305	(void)sdi;
	306
	307	switch (key) {
0d485e30	308	case SR_CONF_SCAN_OPTIONS:
70424328 BV	309	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
70424328 BV	310	hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
0d485e30	311	break;
9a6517d1	312	case SR_CONF_DEVICE_OPTIONS:
70424328 BV	313	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
70424328 BV	314	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
9a6517d1	315	break;
a1c743fc BV	316	default:
	317	return SR_ERR_ARG;
	318	}
	319
	320	return SR_OK;
	321	}
	322
883a2e9e BV	323	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	324	void *cb_data)
	325	{
d3f8f141 BV	326	struct dev_context *devc;
	327
	328	if (!(devc = sdi->priv)) {
31d84da3	329	sr_err("sdi->priv was NULL.");
d3f8f141 BV	330	return SR_ERR_BUG;
	331	}
	332
d3f8f141 BV	333	devc->cb_data = cb_data;
	334
	335	/* Send header packet to the session bus. */
4afdfd46	336	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
883a2e9e	337
d3f8f141	338	/* Poll every 100ms, or whenever some data comes in. */
d38d2ef0 BV	339	sr_source_add(devc->serial->fd, G_IO_IN, 50, fluke_receive_data, (void *)sdi);
d38d2ef0 BV	340
58d03f03	341	if (serial_write(devc->serial, "QM\r", 3) == -1) {
31d84da3	342	sr_err("Unable to send QM: %s.", strerror(errno));
d38d2ef0 BV	343	return SR_ERR;
	344	}
	345	devc->cmd_sent_at = g_get_monotonic_time() / 1000;
	346	devc->expect_response = TRUE;
883a2e9e BV	347
	348	return SR_OK;
	349	}
	350
69b07d14	351	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
883a2e9e	352	{
cd2f0fe2 UH	353	return std_hw_dev_acquisition_stop_serial(sdi, cb_data, hw_dev_close,
cd2f0fe2 UH	354	((struct dev_context *)(sdi->priv))->serial, DRIVER_LOG_DOMAIN);
883a2e9e BV	355	}
883a2e9e BV	356
e7edd64f	357	SR_PRIV struct sr_dev_driver flukedmm_driver_info = {
883a2e9e BV	358	.name = "fluke-dmm",
	359	.longname = "Fluke 18x/28x series DMMs",
	360	.api_version = 1,
	361	.init = hw_init,
	362	.cleanup = hw_cleanup,
	363	.scan = hw_scan,
	364	.dev_list = hw_dev_list,
	365	.dev_clear = clear_instances,
6fab7b8f	366	.config_get = NULL,
035a1078	367	.config_set = config_set,
a1c743fc	368	.config_list = config_list,
883a2e9e BV	369	.dev_open = hw_dev_open,
883a2e9e BV	370	.dev_close = hw_dev_close,
883a2e9e BV	371	.dev_acquisition_start = hw_dev_acquisition_start,
	372	.dev_acquisition_stop = hw_dev_acquisition_stop,
	373	.priv = NULL,
	374	};