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

/*
 * This file is part of the sigrok project.
 *
 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@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 <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 "protocol.h"

#define SERIALCOMM "2400/8n1"

static const int hwopts[] = {
	SR_HWOPT_CONN,
	SR_HWOPT_SERIALCOMM,
	0,
};

static const int hwcaps[] = {
	SR_HWCAP_MULTIMETER,
	SR_HWCAP_LIMIT_SAMPLES,
	SR_HWCAP_CONTINUOUS,
	0,
};

static const char *probe_names[] = {
	"Probe",
	NULL,
};

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

/* 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(void)
{
	struct drv_context *drvc;

	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
		sr_err("Driver context malloc failed.");
		return SR_ERR_MALLOC;
	}

	di->priv = drvc;

	return SR_OK;
}

static GSList *lcd14_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 dropped, ret;
	size_t len;
	uint8_t buf[128];

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

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

	sr_info("Probing port %s readonly.", conn);

	drvc = di->priv;
	devices = NULL;
	serial_flush(serial);

	/*
	 * There's no way to get an ID from the multimeter. It just sends data
	 * periodically, so the best we can do is check if the packets match
	 * the expected format.
	 */

	/* Let's get a bit of data and see if we can find a packet. */
	len = sizeof(buf);

	ret = serial_stream_detect(serial, buf, &len, FS9721_PACKET_SIZE,
				   sr_fs9721_packet_valid, 1000, 2400);
	if (ret != SR_OK)
		goto scan_cleanup;

	/*
	 * If we dropped more than two packets worth of data, something is
	 * wrong. We shouldn't quit however, since the dropped bytes might be
	 * just zeroes at the beginning of the stream. Those can occur as a
	 * combination of the nonstandard cable that ships with this device and
	 * the serial port or USB to serial adapter.
	 */
	dropped = len - FS9721_PACKET_SIZE;
	if (dropped > 2 * FS9721_PACKET_SIZE)
		sr_warn("Had to drop too much data.");

	sr_info("Found device on port %s.", conn);

	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "TekPower",
				    "TP4000ZC", "")))
		goto scan_cleanup;

	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
		sr_err("Device context malloc failed.");
		goto scan_cleanup;
	}

	devc->serial = serial;

	sdi->priv = devc;
	sdi->driver = di;
	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
		goto scan_cleanup;
	sdi->probes = g_slist_append(sdi->probes, probe);
	drvc->instances = g_slist_append(drvc->instances, sdi);
	devices = g_slist_append(devices, sdi);

scan_cleanup:
	serial_close(serial);

	return devices;
}

static GSList *hw_scan(GSList *options)
{
	struct sr_hwopt *opt;
	GSList *l, *devices;
	const char *conn, *serialcomm;

	conn = serialcomm = NULL;
	for (l = options; l; l = l->next) {
		opt = l->data;
		switch (opt->hwopt) {
		case SR_HWOPT_CONN:
			conn = opt->value;
			break;
		case SR_HWOPT_SERIALCOMM:
			serialcomm = opt->value;
			break;
		}
	}
	if (!conn)
		return NULL;

	if (serialcomm) {
		/* Use the provided comm specs. */
		devices = lcd14_scan(conn, serialcomm);
	} else {
		/* Try the default. */
		devices = lcd14_scan(conn, SERIALCOMM);
	}

	return devices;
}

static GSList *hw_dev_list(void)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->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_RDONLY) != 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;

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

	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 hw_info_get(int info_id, const void **data,
		       const struct sr_dev_inst *sdi)
{
	(void)sdi;

	switch (info_id) {
	case SR_DI_HWOPTS:
		*data = hwopts;
		break;
	case SR_DI_HWCAPS:
		*data = hwcaps;
		break;
	case SR_DI_NUM_PROBES:
		*data = GINT_TO_POINTER(1);
		break;
	case SR_DI_PROBE_NAMES:
		*data = probe_names;
		break;
	default:
		return SR_ERR_ARG;
	}

	return SR_OK;
}

static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
			     const void *value)
{
	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 (hwcap) {
	case SR_HWCAP_LIMIT_SAMPLES:
		devc->limit_samples = *(const uint64_t *)value;
		sr_dbg("Setting sample limit to %" PRIu64 ".",
		       devc->limit_samples);
		break;
	default:
		sr_err("Unknown capability: %d.", hwcap);
		return SR_ERR;
		break;
	}

	return SR_OK;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	struct sr_datafeed_packet packet;
	struct sr_datafeed_header header;
	struct sr_datafeed_meta_analog meta;
	struct dev_context *devc;

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

	sr_dbg("Starting acquisition.");

	devc->cb_data = cb_data;

	/*
	 * Reset the number of samples to take. If we've already collected our
	 * quota, but we start a new session, and don't reset this, we'll just
	 * quit without acquiring any new samples.
	 */
	devc->num_samples = 0;

	/* Send header packet to the session bus. */
	sr_dbg("Sending SR_DF_HEADER.");
	packet.type = SR_DF_HEADER;
	packet.payload = (uint8_t *)&header;
	header.feed_version = 1;
	gettimeofday(&header.starttime, NULL);
	sr_session_send(devc->cb_data, &packet);

	/* Send metadata about the SR_DF_ANALOG packets to come. */
	sr_dbg("Sending SR_DF_META_ANALOG.");
	packet.type = SR_DF_META_ANALOG;
	packet.payload = &meta;
	meta.num_probes = 1;
	sr_session_send(devc->cb_data, &packet);

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

	return SR_OK;
}

static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct sr_datafeed_packet packet;
	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;
	}

	sr_dbg("Stopping acquisition.");

	sr_source_remove(devc->serial->fd);
	hw_dev_close((struct sr_dev_inst *)sdi);

	/* Send end packet to the session bus. */
	sr_dbg("Sending SR_DF_END.");
	packet.type = SR_DF_END;
	sr_session_send(cb_data, &packet);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver tekpower_dmm_driver_info = {
	.name = "tekpower-dmm",
	.longname = "TekPower/Digitek TP4000ZC/DT4000ZC DMM",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.scan = hw_scan,
	.dev_list = hw_dev_list,
	.dev_clear = clear_instances,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.info_get = hw_info_get,
	.dev_config_set = hw_dev_config_set,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
7dc55d93 AG	1	/*
	2	* This file is part of the sigrok project.
	3	*
	4	* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
	5	* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
	6	*
	7	* This program is free software: you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation, either version 3 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
	21	#include <glib.h>
7dc55d93 AG	22	#include <sys/types.h>
	23	#include <sys/stat.h>
	24	#include <fcntl.h>
	25	#include <string.h>
	26	#include <errno.h>
bbabddbd UH	27	#include "libsigrok.h"
	28	#include "libsigrok-internal.h"
	29	#include "protocol.h"
7dc55d93	30
d35afa87 BV	31	#define SERIALCOMM "2400/8n1"
d35afa87 BV	32
7dc55d93 AG	33	static const int hwopts[] = {
	34	SR_HWOPT_CONN,
	35	SR_HWOPT_SERIALCOMM,
	36	0,
	37	};
	38
	39	static const int hwcaps[] = {
	40	SR_HWCAP_MULTIMETER,
	41	SR_HWCAP_LIMIT_SAMPLES,
	42	SR_HWCAP_CONTINUOUS,
	43	0,
	44	};
	45
	46	static const char *probe_names[] = {
	47	"Probe",
	48	NULL,
	49	};
	50
bbabddbd UH	51	SR_PRIV struct sr_dev_driver tekpower_dmm_driver_info;
bbabddbd UH	52	static struct sr_dev_driver *di = &tekpower_dmm_driver_info;
7dc55d93 AG	53
	54	/* Properly close and free all devices. */
	55	static int clear_instances(void)
	56	{
	57	struct sr_dev_inst *sdi;
	58	struct drv_context *drvc;
	59	struct dev_context *devc;
	60	GSList *l;
	61
	62	if (!(drvc = di->priv))
	63	return SR_OK;
	64
	65	drvc = di->priv;
	66	for (l = drvc->instances; l; l = l->next) {
	67	if (!(sdi = l->data))
	68	continue;
	69	if (!(devc = sdi->priv))
	70	continue;
	71	sr_serial_dev_inst_free(devc->serial);
	72	sr_dev_inst_free(sdi);
	73	}
	74	g_slist_free(drvc->instances);
	75	drvc->instances = NULL;
	76
	77	return SR_OK;
	78	}
	79
	80	static int hw_init(void)
	81	{
	82	struct drv_context *drvc;
	83
	84	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
bbabddbd UH	85	sr_err("Driver context malloc failed.");
bbabddbd UH	86	return SR_ERR_MALLOC;
7dc55d93 AG	87	}
	88
	89	di->priv = drvc;
	90
	91	return SR_OK;
	92	}
	93
7dc55d93 AG	94	static GSList lcd14_scan(const char conn, const char *serialcomm)
	95	{
	96	struct sr_dev_inst *sdi;
	97	struct drv_context *drvc;
	98	struct dev_context *devc;
	99	struct sr_probe *probe;
d35afa87	100	struct sr_serial_dev_inst *serial;
7dc55d93	101	GSList *devices;
2546b05c AG	102	int dropped, ret;
	103	size_t len;
	104	uint8_t buf[128];
7dc55d93	105
d35afa87	106	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
7dc55d93	107	return NULL;
d35afa87	108
a54dd31e	109	if (serial_open(serial, SERIAL_RDONLY \| SERIAL_NONBLOCK) != SR_OK)
7dc55d93	110	return NULL;
7dc55d93	111
bbabddbd	112	sr_info("Probing port %s readonly.", conn);
7dc55d93 AG	113
7dc55d93 AG	114	drvc = di->priv;
7dc55d93	115	devices = NULL;
d35afa87	116	serial_flush(serial);
bbabddbd UH	117
	118	/*
	119	* There's no way to get an ID from the multimeter. It just sends data
	120	* periodically, so the best we can do is check if the packets match
	121	* the expected format.
	122	*/
7dc55d93	123
2546b05c AG	124	/* Let's get a bit of data and see if we can find a packet. */
2546b05c AG	125	len = sizeof(buf);
7dc55d93	126
2546b05c AG	127	ret = serial_stream_detect(serial, buf, &len, FS9721_PACKET_SIZE,
	128	sr_fs9721_packet_valid, 1000, 2400);
	129	if (ret != SR_OK)
	130	goto scan_cleanup;
7dc55d93	131
2546b05c AG	132	/*
	133	* If we dropped more than two packets worth of data, something is
	134	* wrong. We shouldn't quit however, since the dropped bytes might be
	135	* just zeroes at the beginning of the stream. Those can occur as a
	136	* combination of the nonstandard cable that ships with this device and
	137	* the serial port or USB to serial adapter.
	138	*/
	139	dropped = len - FS9721_PACKET_SIZE;
6bef68a7 UH	140	if (dropped > 2 * FS9721_PACKET_SIZE)
6bef68a7 UH	141	sr_warn("Had to drop too much data.");
7dc55d93	142
2546b05c	143	sr_info("Found device on port %s.", conn);
7dc55d93	144
2546b05c AG	145	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "TekPower",
	146	"TP4000ZC", "")))
	147	goto scan_cleanup;
6bef68a7	148
2546b05c AG	149	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	150	sr_err("Device context malloc failed.");
	151	goto scan_cleanup;
7dc55d93 AG	152	}
7dc55d93 AG	153
2546b05c AG	154	devc->serial = serial;
	155
	156	sdi->priv = devc;
	157	sdi->driver = di;
	158	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	159	goto scan_cleanup;
	160	sdi->probes = g_slist_append(sdi->probes, probe);
	161	drvc->instances = g_slist_append(drvc->instances, sdi);
	162	devices = g_slist_append(devices, sdi);
	163
	164	scan_cleanup:
d35afa87	165	serial_close(serial);
2546b05c	166
7dc55d93 AG	167	return devices;
	168	}
	169
	170	static GSList hw_scan(GSList options)
	171	{
	172	struct sr_hwopt *opt;
	173	GSList l, devices;
	174	const char conn, serialcomm;
	175
	176	conn = serialcomm = NULL;
	177	for (l = options; l; l = l->next) {
	178	opt = l->data;
	179	switch (opt->hwopt) {
	180	case SR_HWOPT_CONN:
	181	conn = opt->value;
	182	break;
	183	case SR_HWOPT_SERIALCOMM:
	184	serialcomm = opt->value;
	185	break;
	186	}
	187	}
	188	if (!conn)
	189	return NULL;
	190
	191	if (serialcomm) {
	192	/* Use the provided comm specs. */
	193	devices = lcd14_scan(conn, serialcomm);
	194	} else {
d35afa87 BV	195	/* Try the default. */
d35afa87 BV	196	devices = lcd14_scan(conn, SERIALCOMM);
7dc55d93 AG	197	}
	198
	199	return devices;
	200	}
	201
	202	static GSList *hw_dev_list(void)
	203	{
	204	struct drv_context *drvc;
	205
	206	drvc = di->priv;
	207
	208	return drvc->instances;
	209	}
	210
	211	static int hw_dev_open(struct sr_dev_inst *sdi)
	212	{
	213	struct dev_context *devc;
	214
	215	if (!(devc = sdi->priv)) {
	216	sr_err("sdi->priv was NULL.");
	217	return SR_ERR_BUG;
	218	}
	219
a54dd31e	220	if (serial_open(devc->serial, SERIAL_RDONLY) != SR_OK)
7dc55d93	221	return SR_ERR;
bbabddbd	222
7dc55d93 AG	223	sdi->status = SR_ST_ACTIVE;
	224
	225	return SR_OK;
	226	}
	227
	228	static int hw_dev_close(struct sr_dev_inst *sdi)
	229	{
	230	struct dev_context *devc;
	231
	232	if (!(devc = sdi->priv)) {
	233	sr_err("sdi->priv was NULL.");
	234	return SR_ERR_BUG;
	235	}
	236
	237	if (devc->serial && devc->serial->fd != -1) {
d35afa87	238	serial_close(devc->serial);
7dc55d93 AG	239	sdi->status = SR_ST_INACTIVE;
	240	}
	241
	242	return SR_OK;
	243	}
	244
	245	static int hw_cleanup(void)
	246	{
	247	clear_instances();
	248
	249	return SR_OK;
	250	}
	251
	252	static int hw_info_get(int info_id, const void **data,
bbabddbd	253	const struct sr_dev_inst *sdi)
7dc55d93	254	{
bbabddbd	255	(void)sdi;
7dc55d93 AG	256
	257	switch (info_id) {
	258	case SR_DI_HWOPTS:
	259	*data = hwopts;
	260	break;
	261	case SR_DI_HWCAPS:
	262	*data = hwcaps;
	263	break;
	264	case SR_DI_NUM_PROBES:
	265	*data = GINT_TO_POINTER(1);
	266	break;
	267	case SR_DI_PROBE_NAMES:
	268	*data = probe_names;
	269	break;
	270	default:
	271	return SR_ERR_ARG;
	272	}
	273
	274	return SR_OK;
	275	}
	276
	277	static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
bbabddbd	278	const void *value)
7dc55d93 AG	279	{
	280	struct dev_context *devc;
	281
	282	if (sdi->status != SR_ST_ACTIVE)
	283	return SR_ERR;
	284
	285	if (!(devc = sdi->priv)) {
	286	sr_err("sdi->priv was NULL.");
	287	return SR_ERR_BUG;
	288	}
	289
	290	switch (hwcap) {
	291	case SR_HWCAP_LIMIT_SAMPLES:
	292	devc->limit_samples = (const uint64_t )value;
	293	sr_dbg("Setting sample limit to %" PRIu64 ".",
	294	devc->limit_samples);
	295	break;
	296	default:
	297	sr_err("Unknown capability: %d.", hwcap);
	298	return SR_ERR;
	299	break;
	300	}
	301
	302	return SR_OK;
	303	}
	304
	305	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
bbabddbd	306	void *cb_data)
7dc55d93 AG	307	{
	308	struct sr_datafeed_packet packet;
	309	struct sr_datafeed_header header;
	310	struct sr_datafeed_meta_analog meta;
	311	struct dev_context *devc;
	312
	313	if (!(devc = sdi->priv)) {
	314	sr_err("sdi->priv was NULL.");
	315	return SR_ERR_BUG;
	316	}
	317
	318	sr_dbg("Starting acquisition.");
	319
	320	devc->cb_data = cb_data;
	321
bbabddbd UH	322	/*
bbabddbd UH	323	* Reset the number of samples to take. If we've already collected our
7dc55d93	324	* quota, but we start a new session, and don't reset this, we'll just
bbabddbd UH	325	* quit without acquiring any new samples.
bbabddbd UH	326	*/
7dc55d93 AG	327	devc->num_samples = 0;
	328
	329	/* Send header packet to the session bus. */
	330	sr_dbg("Sending SR_DF_HEADER.");
	331	packet.type = SR_DF_HEADER;
	332	packet.payload = (uint8_t *)&header;
	333	header.feed_version = 1;
	334	gettimeofday(&header.starttime, NULL);
	335	sr_session_send(devc->cb_data, &packet);
	336
	337	/* Send metadata about the SR_DF_ANALOG packets to come. */
	338	sr_dbg("Sending SR_DF_META_ANALOG.");
	339	packet.type = SR_DF_META_ANALOG;
	340	packet.payload = &meta;
	341	meta.num_probes = 1;
	342	sr_session_send(devc->cb_data, &packet);
	343
bbabddbd	344	/* Poll every 50ms, or whenever some data comes in. */
7dc55d93	345	sr_source_add(devc->serial->fd, G_IO_IN, 50,
bbabddbd	346	tekpower_dmm_receive_data, (void *)sdi);
7dc55d93 AG	347
	348	return SR_OK;
	349	}
	350
69b07d14	351	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
7dc55d93 AG	352	{
	353	struct sr_datafeed_packet packet;
	354	struct dev_context *devc;
	355
	356	if (sdi->status != SR_ST_ACTIVE)
	357	return SR_ERR;
	358
	359	if (!(devc = sdi->priv)) {
	360	sr_err("sdi->priv was NULL.");
	361	return SR_ERR_BUG;
	362	}
	363
	364	sr_dbg("Stopping acquisition.");
	365
	366	sr_source_remove(devc->serial->fd);
	367	hw_dev_close((struct sr_dev_inst *)sdi);
	368
	369	/* Send end packet to the session bus. */
	370	sr_dbg("Sending SR_DF_END.");
	371	packet.type = SR_DF_END;
	372	sr_session_send(cb_data, &packet);
	373
	374	return SR_OK;
	375	}
	376
bbabddbd	377	SR_PRIV struct sr_dev_driver tekpower_dmm_driver_info = {
7dc55d93	378	.name = "tekpower-dmm",
bbabddbd	379	.longname = "TekPower/Digitek TP4000ZC/DT4000ZC DMM",
7dc55d93 AG	380	.api_version = 1,
	381	.init = hw_init,
	382	.cleanup = hw_cleanup,
	383	.scan = hw_scan,
	384	.dev_list = hw_dev_list,
	385	.dev_clear = clear_instances,
	386	.dev_open = hw_dev_open,
	387	.dev_close = hw_dev_close,
	388	.info_get = hw_info_get,
	389	.dev_config_set = hw_dev_config_set,
	390	.dev_acquisition_start = hw_dev_acquisition_start,
	391	.dev_acquisition_stop = hw_dev_acquisition_stop,
	392	.priv = NULL,
	393	};