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

/*
 * This file is part of the libsigrok 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 <config.h>
#include <glib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#include "protocol.h"

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

static const uint32_t drvopts[] = {
	SR_CONF_MULTIMETER,
};

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

extern const struct agdmm_job agdmm_jobs_u12xx[];
extern const struct agdmm_recv agdmm_recvs_u123x[];
extern const struct agdmm_recv agdmm_recvs_u124x[];
extern const struct agdmm_recv agdmm_recvs_u125x[];
extern const struct agdmm_recv agdmm_recvs_u128x[];

/* This works on all the Agilent U12xxA series, although the
 * U127xA can apparently also run at 19200/8n1. */
#define SERIALCOMM "9600/8n1"

static const struct agdmm_profile supported_agdmm[] = {
	{ AGILENT_U1231, "U1231A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },
	{ AGILENT_U1232, "U1232A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },
	{ AGILENT_U1233, "U1233A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },

	{ AGILENT_U1241, "U1241A", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	{ AGILENT_U1242, "U1242A", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	{ AGILENT_U1241, "U1241B", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	{ AGILENT_U1242, "U1242B", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },

	{ AGILENT_U1251, "U1251A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	{ AGILENT_U1252, "U1252A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	{ AGILENT_U1253, "U1253A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	{ AGILENT_U1251, "U1251B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	{ AGILENT_U1252, "U1252B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	{ AGILENT_U1253, "U1253B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },

	{ KEYSIGHT_U1281, "U1281A", 3, agdmm_jobs_u12xx, agdmm_recvs_u128x },
	{ KEYSIGHT_U1282, "U1282A", 3, agdmm_jobs_u12xx, agdmm_recvs_u128x },
	ALL_ZERO
};

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_config *src;
	struct sr_serial_dev_inst *serial;
	GSList *l, *devices;
	int len, i;
	const char *conn, *serialcomm;
	char *buf, **tokens;

	devices = 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;

	serial = sr_serial_dev_inst_new(conn, serialcomm);

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

	serial_flush(serial);
	if (serial_write_blocking(serial, "*IDN?\r\n", 7, SERIAL_WRITE_TIMEOUT_MS) < 7) {
		sr_err("Unable to send identification string.");
		return NULL;
	}

	len = 128;
	buf = g_malloc(len);
	serial_readline(serial, &buf, &len, 250);
	if (!len)
		return NULL;

	tokens = g_strsplit(buf, ",", 4);
	if ((!strcmp("Agilent Technologies", tokens[0]) ||
	     !strcmp("Keysight Technologies", tokens[0]))
			&& tokens[1] && tokens[2] && tokens[3]) {
		for (i = 0; supported_agdmm[i].model; i++) {
			if (strcmp(supported_agdmm[i].modelname, tokens[1]))
				continue;
			sdi = g_malloc0(sizeof(struct sr_dev_inst));
			sdi->status = SR_ST_INACTIVE;
			sdi->vendor = g_strdup(tokens[0][0] == 'A' ? "Agilent" : "Keysight");
			sdi->model = g_strdup(tokens[1]);
			sdi->version = g_strdup(tokens[3]);
			devc = g_malloc0(sizeof(struct dev_context));
			sr_sw_limits_init(&devc->limits);
			devc->profile = &supported_agdmm[i];
			if (supported_agdmm[i].nb_channels > 1) {
				int temp_chan = supported_agdmm[i].nb_channels - 1;
				devc->cur_mq[temp_chan] = SR_MQ_TEMPERATURE;
				devc->cur_unit[temp_chan] = SR_UNIT_CELSIUS;
				devc->cur_digits[temp_chan] = 1;
				devc->cur_encoding[temp_chan] = 2;
			}
			sdi->inst_type = SR_INST_SERIAL;
			sdi->conn = serial;
			sdi->priv = devc;
			sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
			if (supported_agdmm[i].nb_channels > 1)
				sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "P2");
			if (supported_agdmm[i].nb_channels > 2)
				sr_channel_new(sdi, 2, SR_CHANNEL_ANALOG, TRUE, "P3");
			devices = g_slist_append(devices, sdi);
			break;
		}
	}
	g_strfreev(tokens);
	g_free(buf);

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

	return std_scan_complete(di, devices);
}

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

	(void)cg;

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		ret = sr_sw_limits_config_get(&devc->limits, key, data);
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

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;
	int ret;

	(void)cg;

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

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		ret = sr_sw_limits_config_set(&devc->limits, key, data);
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	if (key == SR_CONF_SCAN_OPTIONS) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		return SR_OK;
	}

	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		return SR_OK;
	}

	if (!sdi || cg)
		return SR_ERR_ARG;

	switch (key) {
	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)
{
	struct dev_context *devc = sdi->priv;
	struct sr_serial_dev_inst *serial;

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

	devc->cur_channel = sr_next_enabled_channel(sdi, NULL);
	devc->cur_conf = sr_next_enabled_channel(sdi, NULL);
	devc->cur_mq[0] = -1;
	if (devc->profile->nb_channels > 2)
		devc->cur_mq[1] = -1;

	sr_sw_limits_acquisition_start(&devc->limits);
	std_session_send_df_header(sdi);

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

	return SR_OK;
}

static struct sr_dev_driver agdmm_driver_info = {
	.name = "agilent-dmm",
	.longname = "Agilent U12xx series DMMs",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = NULL,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = std_serial_dev_open,
	.dev_close = std_serial_dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = std_serial_dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(agdmm_driver_info);
Commit	Line	Data
e93cdf42	1	/*
50985c20	2	* This file is part of the libsigrok project.
e93cdf42 BV	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
6ec6c43b	20	#include <config.h>
e93cdf42	21	#include <glib.h>
e93cdf42 BV	22	#include <sys/types.h>
	23	#include <sys/stat.h>
	24	#include <fcntl.h>
	25	#include <string.h>
c1aae900	26	#include <libsigrok/libsigrok.h>
6f22a8ef	27	#include "libsigrok-internal.h"
6cf1a87b	28	#include "protocol.h"
e93cdf42	29
a0e0bb41	30	static const uint32_t scanopts[] = {
1953564a BV	31	SR_CONF_CONN,
1953564a BV	32	SR_CONF_SERIALCOMM,
e93cdf42 BV	33	};
e93cdf42 BV	34
f9dada0b	35	static const uint32_t drvopts[] = {
1953564a	36	SR_CONF_MULTIMETER,
f9dada0b BV	37	};
	38
	39	static const uint32_t devopts[] = {
e91bb0a6	40	SR_CONF_CONTINUOUS,
6ace179e AJ	41	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
6ace179e AJ	42	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
e93cdf42 BV	43	};
e93cdf42 BV	44
f857bd92	45	extern const struct agdmm_job agdmm_jobs_u12xx[];
8c0152f2	46	extern const struct agdmm_recv agdmm_recvs_u123x[];
4edba404	47	extern const struct agdmm_recv agdmm_recvs_u124x[];
8c0152f2	48	extern const struct agdmm_recv agdmm_recvs_u125x[];
43185ed3	49	extern const struct agdmm_recv agdmm_recvs_u128x[];
e93cdf42	50
74ac7d7f BV	51	/* This works on all the Agilent U12xxA series, although the
	52	* U127xA can apparently also run at 19200/8n1. */
	53	#define SERIALCOMM "9600/8n1"
	54
e93cdf42	55	static const struct agdmm_profile supported_agdmm[] = {
d822726d AJ	56	{ AGILENT_U1231, "U1231A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },
	57	{ AGILENT_U1232, "U1232A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },
	58	{ AGILENT_U1233, "U1233A", 1, agdmm_jobs_u12xx, agdmm_recvs_u123x },
	59
	60	{ AGILENT_U1241, "U1241A", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	61	{ AGILENT_U1242, "U1242A", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	62	{ AGILENT_U1241, "U1241B", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	63	{ AGILENT_U1242, "U1242B", 2, agdmm_jobs_u12xx, agdmm_recvs_u124x },
	64
	65	{ AGILENT_U1251, "U1251A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	66	{ AGILENT_U1252, "U1252A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	67	{ AGILENT_U1253, "U1253A", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	68	{ AGILENT_U1251, "U1251B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	69	{ AGILENT_U1252, "U1252B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	70	{ AGILENT_U1253, "U1253B", 3, agdmm_jobs_u12xx, agdmm_recvs_u125x },
	71
	72	{ KEYSIGHT_U1281, "U1281A", 3, agdmm_jobs_u12xx, agdmm_recvs_u128x },
	73	{ KEYSIGHT_U1282, "U1282A", 3, agdmm_jobs_u12xx, agdmm_recvs_u128x },
f857bd92	74	ALL_ZERO
e93cdf42 BV	75	};
e93cdf42 BV	76
4f840ce9	77	static GSList scan(struct sr_dev_driver di, GSList *options)
e93cdf42 BV	78	{
e93cdf42 BV	79	struct sr_dev_inst *sdi;
e93cdf42	80	struct dev_context *devc;
1987b8d6	81	struct sr_config *src;
109a3ba4	82	struct sr_serial_dev_inst *serial;
e93cdf42	83	GSList l, devices;
109a3ba4	84	int len, i;
e93cdf42 BV	85	const char conn, serialcomm;
	86	char buf, *tokens;
	87
e93cdf42 BV	88	devices = NULL;
	89	conn = serialcomm = NULL;
	90	for (l = options; l; l = l->next) {
1987b8d6 BV	91	src = l->data;
1987b8d6 BV	92	switch (src->key) {
1953564a	93	case SR_CONF_CONN:
e44ac12a	94	conn = g_variant_get_string(src->data, NULL);
e93cdf42	95	break;
1953564a	96	case SR_CONF_SERIALCOMM:
e44ac12a	97	serialcomm = g_variant_get_string(src->data, NULL);
e93cdf42 BV	98	break;
	99	}
	100	}
74ac7d7f	101	if (!conn)
e93cdf42	102	return NULL;
109a3ba4 BV	103	if (!serialcomm)
109a3ba4 BV	104	serialcomm = SERIALCOMM;
e93cdf42	105
91219afc	106	serial = sr_serial_dev_inst_new(conn, serialcomm);
e93cdf42	107
64c536be	108	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
e93cdf42	109	return NULL;
e93cdf42	110
109a3ba4	111	serial_flush(serial);
95779b43	112	if (serial_write_blocking(serial, "*IDN?\r\n", 7, SERIAL_WRITE_TIMEOUT_MS) < 7) {
081c214e	113	sr_err("Unable to send identification string.");
e93cdf42 BV	114	return NULL;
	115	}
	116
	117	len = 128;
a95f142e	118	buf = g_malloc(len);
ee2bcdfc	119	serial_readline(serial, &buf, &len, 250);
e93cdf42 BV	120	if (!len)
	121	return NULL;
	122
	123	tokens = g_strsplit(buf, ",", 4);
9ae544b6 AJ	124	if ((!strcmp("Agilent Technologies", tokens[0]) \|\|
9ae544b6 AJ	125	!strcmp("Keysight Technologies", tokens[0]))
fbf07e02	126	&& tokens[1] && tokens[2] && tokens[3]) {
e93cdf42 BV	127	for (i = 0; supported_agdmm[i].model; i++) {
	128	if (strcmp(supported_agdmm[i].modelname, tokens[1]))
	129	continue;
aac29cc1	130	sdi = g_malloc0(sizeof(struct sr_dev_inst));
0af636be	131	sdi->status = SR_ST_INACTIVE;
9ae544b6	132	sdi->vendor = g_strdup(tokens[0][0] == 'A' ? "Agilent" : "Keysight");
0af636be UH	133	sdi->model = g_strdup(tokens[1]);
0af636be UH	134	sdi->version = g_strdup(tokens[3]);
f57d8ffe	135	devc = g_malloc0(sizeof(struct dev_context));
5b6829ea	136	sr_sw_limits_init(&devc->limits);
e93cdf42	137	devc->profile = &supported_agdmm[i];
d822726d AJ	138	if (supported_agdmm[i].nb_channels > 1) {
	139	int temp_chan = supported_agdmm[i].nb_channels - 1;
	140	devc->cur_mq[temp_chan] = SR_MQ_TEMPERATURE;
	141	devc->cur_unit[temp_chan] = SR_UNIT_CELSIUS;
	142	devc->cur_digits[temp_chan] = 1;
	143	devc->cur_encoding[temp_chan] = 2;
	144	}
fb3a1505 BV	145	sdi->inst_type = SR_INST_SERIAL;
fb3a1505 BV	146	sdi->conn = serial;
e93cdf42	147	sdi->priv = devc;
5e23fcab	148	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
d822726d AJ	149	if (supported_agdmm[i].nb_channels > 1)
	150	sr_channel_new(sdi, 1, SR_CHANNEL_ANALOG, TRUE, "P2");
	151	if (supported_agdmm[i].nb_channels > 2)
	152	sr_channel_new(sdi, 2, SR_CHANNEL_ANALOG, TRUE, "P3");
e93cdf42 BV	153	devices = g_slist_append(devices, sdi);
	154	break;
	155	}
	156	}
	157	g_strfreev(tokens);
	158	g_free(buf);
	159
109a3ba4 BV	160	serial_close(serial);
	161	if (!devices)
	162	sr_serial_dev_inst_free(serial);
e93cdf42	163
15a5bfe4	164	return std_scan_complete(di, devices);
e93cdf42 BV	165	}
e93cdf42 BV	166
6ace179e AJ	167	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	168	const struct sr_channel_group *cg)
	169	{
	170	struct dev_context *devc;
	171	int ret;
	172
	173	(void)cg;
	174
	175	devc = sdi->priv;
	176
	177	ret = SR_OK;
	178	switch (key) {
	179	case SR_CONF_LIMIT_SAMPLES:
	180	case SR_CONF_LIMIT_MSEC:
	181	ret = sr_sw_limits_config_get(&devc->limits, key, data);
	182	break;
	183	default:
	184	return SR_ERR_NA;
	185	}
	186
	187	return ret;
	188	}
	189
584560f1	190	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
53b4680f	191	const struct sr_channel_group *cg)
e93cdf42 BV	192	{
e93cdf42 BV	193	struct dev_context *devc;
6ace179e	194	int ret;
e93cdf42	195
53b4680f	196	(void)cg;
8f996b89	197
e93cdf42	198	if (sdi->status != SR_ST_ACTIVE)
e73ffd42	199	return SR_ERR_DEV_CLOSED;
e93cdf42	200
b0baddef	201	devc = sdi->priv;
e93cdf42	202
6ace179e AJ	203	ret = SR_OK;
	204	switch (key) {
	205	case SR_CONF_LIMIT_SAMPLES:
	206	case SR_CONF_LIMIT_MSEC:
	207	ret = sr_sw_limits_config_set(&devc->limits, key, data);
	208	break;
	209	default:
	210	ret = SR_ERR_NA;
	211	}
	212
	213	return ret;
e93cdf42 BV	214	}
e93cdf42 BV	215
584560f1	216	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
53b4680f	217	const struct sr_channel_group *cg)
a1c743fc	218	{
6ace179e	219	if (key == SR_CONF_SCAN_OPTIONS) {
584560f1	220	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
a0e0bb41	221	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
6ace179e AJ	222	return SR_OK;
	223	}
	224
	225	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
	226	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	227	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	228	return SR_OK;
	229	}
	230
	231	if (!sdi \|\| cg)
	232	return SR_ERR_ARG;
	233
	234	switch (key) {
9a6517d1	235	case SR_CONF_DEVICE_OPTIONS:
6ace179e AJ	236	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
6ace179e AJ	237	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
9a6517d1	238	break;
a1c743fc	239	default:
bd6fbf62	240	return SR_ERR_NA;
a1c743fc BV	241	}
	242
	243	return SR_OK;
	244	}
	245
695dc859	246	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
e93cdf42	247	{
5b6829ea	248	struct dev_context *devc = sdi->priv;
fb3a1505	249	struct sr_serial_dev_inst *serial;
e93cdf42	250
e73ffd42 BV	251	if (sdi->status != SR_ST_ACTIVE)
	252	return SR_ERR_DEV_CLOSED;
	253
d822726d AJ	254	devc->cur_channel = sr_next_enabled_channel(sdi, NULL);
	255	devc->cur_conf = sr_next_enabled_channel(sdi, NULL);
	256	devc->cur_mq[0] = -1;
	257	if (devc->profile->nb_channels > 2)
	258	devc->cur_mq[1] = -1;
	259
5b6829ea	260	sr_sw_limits_acquisition_start(&devc->limits);
bee2b016	261	std_session_send_df_header(sdi);
e93cdf42	262
e93cdf42	263	/* Poll every 100ms, or whenever some data comes in. */
fb3a1505	264	serial = sdi->conn;
102f1239 BV	265	serial_source_add(sdi->session, serial, G_IO_IN, 100,
102f1239 BV	266	agdmm_receive_data, (void *)sdi);
e93cdf42 BV	267
	268	return SR_OK;
	269	}
	270
dd5c48a6	271	static struct sr_dev_driver agdmm_driver_info = {
e93cdf42 BV	272	.name = "agilent-dmm",
	273	.longname = "Agilent U12xx series DMMs",
	274	.api_version = 1,
c2fdcc25	275	.init = std_init,
700d6b64	276	.cleanup = std_cleanup,
6078d2c9	277	.scan = scan,
c01bf34c	278	.dev_list = std_dev_list,
a6630742	279	.dev_clear = NULL,
6ace179e	280	.config_get = config_get,
035a1078	281	.config_set = config_set,
a1c743fc	282	.config_list = config_list,
854434de	283	.dev_open = std_serial_dev_open,
bf2c987f	284	.dev_close = std_serial_dev_close,
6078d2c9	285	.dev_acquisition_start = dev_acquisition_start,
4b1a9d5d	286	.dev_acquisition_stop = std_serial_dev_acquisition_stop,
41812aca	287	.context = NULL,
e93cdf42	288	};
dd5c48a6	289	SR_REGISTER_DEV_DRIVER(agdmm_driver_info);