[libsigrok.git] / src / hardware / norma-dmm / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
 *
 * 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/>.
 */

/** @file
 *  Norma DM9x0/Siemens B102x DMMs driver.
 *  @internal
 */

#include "protocol.h"

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
	SR_CONF_SERIALCOMM,
};

static const uint32_t devopts[] = {
	SR_CONF_MULTIMETER,
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_SET,
};

#define BUF_MAX 50

#define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1"

SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
SR_PRIV struct sr_dev_driver siemens_b102x_driver_info;

static const char* get_brandstr(struct sr_dev_driver* drv)
{
	if (drv == &norma_dmm_driver_info)
		return "Norma";
	else
		return "Siemens";
}

static const char* get_typestr(int type, struct sr_dev_driver* drv)
{
	static const char* nameref[5][2] = {
		{"DM910", "B1024"},
		{"DM920", "B1025"},
		{"DM930", "B1026"},
		{"DM940", "B1027"},
		{"DM950", "B1028"}};

	if ((type < 1) || (type > 5))
		return "Unknown type!";

	return nameref[type-1][(drv == &siemens_b102x_driver_info)];
}

static int init_norma_dmm(struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, &norma_dmm_driver_info, LOG_PREFIX);
}

static int init_siemens_b102x(struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, &siemens_b102x_driver_info, LOG_PREFIX);
}

static GSList *do_scan(struct sr_dev_driver* drv, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_config *src;
	struct sr_channel *ch;
	struct sr_serial_dev_inst *serial;
	GSList *l, *devices;
	int len, cnt;
	const char *conn, *serialcomm;
	char *buf;
	char req[10];
	int auxtype;

	devices = NULL;
	drvc = drv->priv;
	drvc->instances = NULL;
	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)
		serialcomm = SERIALCOMM;

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

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

	serial_flush(serial);

	if (!(buf = g_try_malloc(BUF_MAX))) {
		sr_err("Serial buffer malloc failed.");
		return NULL;
	}

	snprintf(req, sizeof(req), "%s\r\n",
		 nmadmm_requests[NMADMM_REQ_IDN].req_str);
	g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */
	for (cnt = 0; cnt < 7; cnt++) {
		if (serial_write_blocking(serial, req, strlen(req)) < 0) {
			sr_err("Unable to send identification request.");
			return NULL;
		}
		len = BUF_MAX;
		serial_readline(serial, &buf, &len, NMADMM_TIMEOUT_MS);
		if (!len)
			continue;
		buf[BUF_MAX - 1] = '\0';

		/* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950) */
		if (g_regex_match_simple("^1834 [^,]*,IF V*", (char *)buf, 0, 0)) {
			auxtype = xgittoint(buf[7]);
			sr_spew("%s %s DMM %s detected!", get_brandstr(drv), get_typestr(auxtype, drv), buf + 9);

			if (!(sdi = sr_dev_inst_new(SR_ST_INACTIVE,
						get_brandstr(drv), get_typestr(auxtype, drv), buf + 9)))
				return NULL;
			if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
				sr_err("Device context malloc failed.");
				return NULL;
			}
			devc->type = auxtype;
			devc->version = g_strdup(&buf[9]);
			devc->elapsed_msec = g_timer_new();

			sdi->conn = serial;
			sdi->priv = devc;
			sdi->driver = drv;
			if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE,
				"P1")))
				return NULL;
			sdi->channels = g_slist_append(sdi->channels, ch);
			drvc->instances = g_slist_append(drvc->instances, sdi);
			devices = g_slist_append(devices, sdi);
			break;
		}

		/*
		 * The interface of the DM9x0 contains a cap that needs to
		 * charge for up to 10s before the interface works, if not
		 * powered externally. Therefore wait a little to improve
		 * chances.
		 */
		if (cnt == 3) {
			sr_info("Waiting 5s to allow interface to settle.");
			g_usleep(5 * 1000 * 1000);
		}
	}

	g_free(buf);

	serial_close(serial);
	if (!devices)
		sr_serial_dev_inst_free(serial);

	return devices;
}

static GSList *scan_norma_dmm(GSList *options)
{
	return do_scan(&norma_dmm_driver_info, options);
}

static GSList *scan_siemens_b102x(GSList *options)
{
	return do_scan(&siemens_b102x_driver_info, options);
}

static GSList *dev_list_norma_dmm(void)
{
	return ((struct drv_context *)(norma_dmm_driver_info.priv))->instances;
}

static GSList *dev_list_siemens_b102x(void)
{
	return ((struct drv_context *)(siemens_b102x_driver_info.priv))->instances;
}

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

	std_serial_dev_close(sdi);

	/* Free dynamically allocated resources. */
	if ((devc = sdi->priv) && devc->version) {
		g_free(devc->version);
		devc->version = NULL;
		g_timer_destroy(devc->elapsed_msec);
	}

	return SR_OK;
}

static int cleanup_norma_dmm(void)
{
	return std_dev_clear(&norma_dmm_driver_info, NULL);
}

static int cleanup_siemens_b102x(void)
{
	return std_dev_clear(&siemens_b102x_driver_info, NULL);
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

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

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

	switch (key) {
	case SR_CONF_LIMIT_MSEC:
		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:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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

	if (!sdi || !cb_data || !(devc = sdi->priv))
		return SR_ERR_BUG;

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

	devc->cb_data = cb_data;

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

	/* Start timer, if required. */
	if (devc->limit_msec)
		g_timer_start(devc->elapsed_msec);

	/* Poll every 100ms, or whenever some data comes in. */
	serial = sdi->conn;
	serial_source_add(sdi->session, serial, G_IO_IN, 100,
			norma_dmm_receive_data, (void *)sdi);

	return SR_OK;
}

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

	/* Stop timer, if required. */
	if (sdi && (devc = sdi->priv) && devc->limit_msec)
		g_timer_stop(devc->elapsed_msec);

	return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close,
			sdi->conn, LOG_PREFIX);
}

SR_PRIV struct sr_dev_driver norma_dmm_driver_info = {
	.name = "norma-dmm",
	.longname = "Norma DM9x0 DMMs",
	.api_version = 1,
	.init = init_norma_dmm,
	.cleanup = cleanup_norma_dmm,
	.scan = scan_norma_dmm,
	.dev_list = dev_list_norma_dmm,
	.dev_clear = NULL,
	.config_get = NULL,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = std_serial_dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.priv = NULL,
};


SR_PRIV struct sr_dev_driver siemens_b102x_driver_info = {
	.name = "siemens-b102x",
	.longname = "Siemens B102x DMMs",
	.api_version = 1,
	.init = init_siemens_b102x,
	.cleanup = cleanup_siemens_b102x,
	.scan = scan_siemens_b102x,
	.dev_list = dev_list_siemens_b102x,
	.dev_clear = NULL,
	.config_get = NULL,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = std_serial_dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
bfd48770 MH	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 Matthias Heidbrink <m-sigrok@heidbrink.biz>
	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
a4e435eb MH	20	/** @file
	21	* Norma DM9x0/Siemens B102x DMMs driver.
	22	* @internal
	23	*/
	24
bfd48770 MH	25	#include "protocol.h"
bfd48770 MH	26
a0e0bb41	27	static const uint32_t scanopts[] = {
f8e76e2e MH	28	SR_CONF_CONN,
	29	SR_CONF_SERIALCOMM,
	30	};
	31
f254bc4b	32	static const uint32_t devopts[] = {
f8e76e2e	33	SR_CONF_MULTIMETER,
f8e76e2e	34	SR_CONF_CONTINUOUS,
5827f61b BV	35	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
5827f61b BV	36	SR_CONF_LIMIT_MSEC \| SR_CONF_SET,
f8e76e2e MH	37	};
f8e76e2e MH	38
e790bd5c	39	#define BUF_MAX 50
f8e76e2e MH	40
	41	#define SERIALCOMM "4800/8n1/dtr=1/rts=0/flow=1"
	42
bfd48770	43	SR_PRIV struct sr_dev_driver norma_dmm_driver_info;
49c06128	44	SR_PRIV struct sr_dev_driver siemens_b102x_driver_info;
bfd48770	45
49c06128	46	static const char* get_brandstr(struct sr_dev_driver* drv)
bfd48770	47	{
49c06128 MH	48	if (drv == &norma_dmm_driver_info)
	49	return "Norma";
	50	else
	51	return "Siemens";
bfd48770 MH	52	}
bfd48770 MH	53
49c06128 MH	54	static const char* get_typestr(int type, struct sr_dev_driver* drv)
	55	{
	56	static const char* nameref[5][2] = {
	57	{"DM910", "B1024"},
	58	{"DM920", "B1025"},
	59	{"DM930", "B1026"},
	60	{"DM940", "B1027"},
	61	{"DM950", "B1028"}};
	62
	63	if ((type < 1) \|\| (type > 5))
	64	return "Unknown type!";
	65
	66	return nameref[type-1][(drv == &siemens_b102x_driver_info)];
	67	}
	68
	69	static int init_norma_dmm(struct sr_context *sr_ctx)
	70	{
	71	return std_init(sr_ctx, &norma_dmm_driver_info, LOG_PREFIX);
	72	}
	73
	74	static int init_siemens_b102x(struct sr_context *sr_ctx)
	75	{
	76	return std_init(sr_ctx, &siemens_b102x_driver_info, LOG_PREFIX);
	77	}
	78
	79	static GSList do_scan(struct sr_dev_driver drv, GSList *options)
bfd48770	80	{
f8e76e2e	81	struct sr_dev_inst *sdi;
bfd48770	82	struct drv_context *drvc;
f8e76e2e MH	83	struct dev_context *devc;
f8e76e2e MH	84	struct sr_config *src;
ba7dd8bb	85	struct sr_channel *ch;
f8e76e2e MH	86	struct sr_serial_dev_inst *serial;
	87	GSList l, devices;
	88	int len, cnt;
	89	const char conn, serialcomm;
	90	char *buf;
f8e76e2e MH	91	char req[10];
	92	int auxtype;
	93
bfd48770	94	devices = NULL;
49c06128	95	drvc = drv->priv;
bfd48770	96	drvc->instances = NULL;
f8e76e2e MH	97	conn = serialcomm = NULL;
	98
	99	for (l = options; l; l = l->next) {
	100	src = l->data;
	101	switch (src->key) {
	102	case SR_CONF_CONN:
	103	conn = g_variant_get_string(src->data, NULL);
	104	break;
	105	case SR_CONF_SERIALCOMM:
	106	serialcomm = g_variant_get_string(src->data, NULL);
	107	break;
	108	}
	109	}
	110	if (!conn)
	111	return NULL;
	112	if (!serialcomm)
	113	serialcomm = SERIALCOMM;
	114
	115	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
	116	return NULL;
	117
d12ef776	118	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
f8e76e2e MH	119	return NULL;
	120
	121	serial_flush(serial);
bfd48770	122
e790bd5c	123	if (!(buf = g_try_malloc(BUF_MAX))) {
f8e76e2e MH	124	sr_err("Serial buffer malloc failed.");
	125	return NULL;
	126	}
	127
	128	snprintf(req, sizeof(req), "%s\r\n",
e790bd5c	129	nmadmm_requests[NMADMM_REQ_IDN].req_str);
a4e435eb	130	g_usleep(150 * 1000); /* Wait a little to allow serial port to settle. */
f8e76e2e	131	for (cnt = 0; cnt < 7; cnt++) {
8849f45a ML	132	if (serial_write_blocking(serial, req, strlen(req)) < 0) {
8849f45a ML	133	sr_err("Unable to send identification request.");
f8e76e2e MH	134	return NULL;
	135	}
	136	len = BUF_MAX;
a4e435eb	137	serial_readline(serial, &buf, &len, NMADMM_TIMEOUT_MS);
f8e76e2e MH	138	if (!len)
f8e76e2e MH	139	continue;
e790bd5c	140	buf[BUF_MAX - 1] = '\0';
f8e76e2e	141
e790bd5c UH	142	/* Match ID string, e.g. "1834 065 V1.06,IF V1.02" (DM950) */
e790bd5c UH	143	if (g_regex_match_simple("^1834 [^,],IF V", (char *)buf, 0, 0)) {
f8e76e2e	144	auxtype = xgittoint(buf[7]);
49c06128	145	sr_spew("%s %s DMM %s detected!", get_brandstr(drv), get_typestr(auxtype, drv), buf + 9);
f8e76e2e	146
aed4ad0b	147	if (!(sdi = sr_dev_inst_new(SR_ST_INACTIVE,
49c06128	148	get_brandstr(drv), get_typestr(auxtype, drv), buf + 9)))
f8e76e2e	149	return NULL;
e790bd5c	150	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
f8e76e2e MH	151	sr_err("Device context malloc failed.");
	152	return NULL;
	153	}
	154	devc->type = auxtype;
	155	devc->version = g_strdup(&buf[9]);
	156	devc->elapsed_msec = g_timer_new();
	157
	158	sdi->conn = serial;
	159	sdi->priv = devc;
49c06128	160	sdi->driver = drv;
3f239f08	161	if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE,
f8e76e2e MH	162	"P1")))
f8e76e2e MH	163	return NULL;
ba7dd8bb	164	sdi->channels = g_slist_append(sdi->channels, ch);
f8e76e2e MH	165	drvc->instances = g_slist_append(drvc->instances, sdi);
	166	devices = g_slist_append(devices, sdi);
	167	break;
	168	}
e790bd5c UH	169
	170	/*
	171	* The interface of the DM9x0 contains a cap that needs to
	172	* charge for up to 10s before the interface works, if not
	173	* powered externally. Therefore wait a little to improve
	174	* chances.
	175	*/
f8e76e2e MH	176	if (cnt == 3) {
	177	sr_info("Waiting 5s to allow interface to settle.");
	178	g_usleep(5 * 1000 * 1000);
	179	}
	180	}
	181
	182	g_free(buf);
	183
	184	serial_close(serial);
	185	if (!devices)
	186	sr_serial_dev_inst_free(serial);
bfd48770 MH	187
	188	return devices;
	189	}
	190
49c06128 MH	191	static GSList scan_norma_dmm(GSList options)
	192	{
	193	return do_scan(&norma_dmm_driver_info, options);
	194	}
	195
	196	static GSList scan_siemens_b102x(GSList options)
	197	{
	198	return do_scan(&siemens_b102x_driver_info, options);
	199	}
	200
	201	static GSList *dev_list_norma_dmm(void)
	202	{
	203	return ((struct drv_context *)(norma_dmm_driver_info.priv))->instances;
	204	}
	205
	206	static GSList *dev_list_siemens_b102x(void)
bfd48770	207	{
49c06128	208	return ((struct drv_context *)(siemens_b102x_driver_info.priv))->instances;
bfd48770 MH	209	}
bfd48770 MH	210
bfd48770 MH	211	static int dev_close(struct sr_dev_inst *sdi)
bfd48770 MH	212	{
f8e76e2e	213	struct dev_context *devc;
bfd48770	214
bf2c987f	215	std_serial_dev_close(sdi);
bfd48770	216
e790bd5c	217	/* Free dynamically allocated resources. */
f8e76e2e MH	218	if ((devc = sdi->priv) && devc->version) {
	219	g_free(devc->version);
	220	devc->version = NULL;
	221	g_timer_destroy(devc->elapsed_msec);
	222	}
bfd48770 MH	223
	224	return SR_OK;
	225	}
	226
49c06128 MH	227	static int cleanup_norma_dmm(void)
	228	{
	229	return std_dev_clear(&norma_dmm_driver_info, NULL);
	230	}
	231
	232	static int cleanup_siemens_b102x(void)
bfd48770	233	{
49c06128	234	return std_dev_clear(&siemens_b102x_driver_info, NULL);
bfd48770 MH	235	}
bfd48770 MH	236
584560f1	237	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	238	const struct sr_channel_group *cg)
bfd48770	239	{
f8e76e2e	240	struct dev_context *devc;
bfd48770	241
53b4680f	242	(void)cg;
d3c74a6f	243
bfd48770 MH	244	if (sdi->status != SR_ST_ACTIVE)
	245	return SR_ERR_DEV_CLOSED;
	246
f8e76e2e MH	247	if (!(devc = sdi->priv)) {
	248	sr_err("sdi->priv was NULL.");
	249	return SR_ERR_BUG;
	250	}
	251
bfd48770	252	switch (key) {
f8e76e2e	253	case SR_CONF_LIMIT_MSEC:
f8e76e2e MH	254	if (g_variant_get_uint64(data) == 0) {
	255	sr_err("LIMIT_MSEC can't be 0.");
	256	return SR_ERR;
	257	}
	258	devc->limit_msec = g_variant_get_uint64(data);
	259	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	260	devc->limit_msec);
	261	break;
	262	case SR_CONF_LIMIT_SAMPLES:
	263	devc->limit_samples = g_variant_get_uint64(data);
	264	sr_dbg("Setting sample limit to %" PRIu64 ".",
	265	devc->limit_samples);
	266	break;
bfd48770	267	default:
f8e76e2e	268	return SR_ERR_NA;
bfd48770 MH	269	}
bfd48770 MH	270
f8e76e2e	271	return SR_OK;
bfd48770 MH	272	}
bfd48770 MH	273
584560f1	274	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	275	const struct sr_channel_group *cg)
bfd48770	276	{
bfd48770	277	(void)sdi;
53b4680f	278	(void)cg;
bfd48770	279
bfd48770	280	switch (key) {
f8e76e2e	281	case SR_CONF_SCAN_OPTIONS:
584560f1	282	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
a0e0bb41	283	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
f8e76e2e MH	284	break;
f8e76e2e MH	285	case SR_CONF_DEVICE_OPTIONS:
584560f1	286	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
f254bc4b	287	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
f8e76e2e	288	break;
bfd48770 MH	289	default:
	290	return SR_ERR_NA;
	291	}
	292
f8e76e2e	293	return SR_OK;
bfd48770 MH	294	}
	295
	296	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	297	void *cb_data)
	298	{
f8e76e2e MH	299	struct dev_context *devc;
	300	struct sr_serial_dev_inst *serial;
	301
f8e76e2e MH	302	if (!sdi \|\| !cb_data \|\| !(devc = sdi->priv))
	303	return SR_ERR_BUG;
	304
bfd48770 MH	305	if (sdi->status != SR_ST_ACTIVE)
	306	return SR_ERR_DEV_CLOSED;
	307
f8e76e2e MH	308	devc->cb_data = cb_data;
	309
	310	/* Send header packet to the session bus. */
	311	std_session_send_df_header(cb_data, LOG_PREFIX);
	312
	313	/* Start timer, if required. */
	314	if (devc->limit_msec)
	315	g_timer_start(devc->elapsed_msec);
	316
	317	/* Poll every 100ms, or whenever some data comes in. */
	318	serial = sdi->conn;
102f1239 BV	319	serial_source_add(sdi->session, serial, G_IO_IN, 100,
102f1239 BV	320	norma_dmm_receive_data, (void *)sdi);
bfd48770 MH	321
	322	return SR_OK;
	323	}
	324
	325	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	326	{
f8e76e2e	327	struct dev_context *devc;
bfd48770	328
f8e76e2e MH	329	/* Stop timer, if required. */
	330	if (sdi && (devc = sdi->priv) && devc->limit_msec)
	331	g_timer_stop(devc->elapsed_msec);
bfd48770	332
d43b0908	333	return std_serial_dev_acquisition_stop(sdi, cb_data, dev_close,
f8e76e2e	334	sdi->conn, LOG_PREFIX);
bfd48770 MH	335	}
	336
	337	SR_PRIV struct sr_dev_driver norma_dmm_driver_info = {
	338	.name = "norma-dmm",
49c06128 MH	339	.longname = "Norma DM9x0 DMMs",
	340	.api_version = 1,
	341	.init = init_norma_dmm,
	342	.cleanup = cleanup_norma_dmm,
	343	.scan = scan_norma_dmm,
	344	.dev_list = dev_list_norma_dmm,
	345	.dev_clear = NULL,
	346	.config_get = NULL,
	347	.config_set = config_set,
	348	.config_list = config_list,
	349	.dev_open = std_serial_dev_open,
	350	.dev_close = dev_close,
	351	.dev_acquisition_start = dev_acquisition_start,
	352	.dev_acquisition_stop = dev_acquisition_stop,
	353	.priv = NULL,
	354	};
	355
	356
	357	SR_PRIV struct sr_dev_driver siemens_b102x_driver_info = {
	358	.name = "siemens-b102x",
	359	.longname = "Siemens B102x DMMs",
bfd48770	360	.api_version = 1,
49c06128 MH	361	.init = init_siemens_b102x,
	362	.cleanup = cleanup_siemens_b102x,
	363	.scan = scan_siemens_b102x,
	364	.dev_list = dev_list_siemens_b102x,
a6630742	365	.dev_clear = NULL,
f8e76e2e	366	.config_get = NULL,
bfd48770 MH	367	.config_set = config_set,
bfd48770 MH	368	.config_list = config_list,
854434de	369	.dev_open = std_serial_dev_open,
bfd48770 MH	370	.dev_close = dev_close,
	371	.dev_acquisition_start = dev_acquisition_start,
	372	.dev_acquisition_stop = dev_acquisition_stop,
	373	.priv = NULL,
	374	};