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

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 2 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 <stdlib.h>
#include <string.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#include "protocol.h"

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

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

/*
 * Note 1: The actual baudrate of the Cyrustek ES519xx chip used in this DMM
 * is 19230. However, the WCH CH9325 chip (UART to USB/HID) used in (some
 * versions of) the UNI-T UT-D04 cable doesn't support 19230 baud. It only
 * supports 19200, and setting an unsupported baudrate will result in the
 * default of 2400 being used (which will not work with this DMM, of course).
 */

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	GSList *usb_devices, *devices, *l;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct drv_context *drvc;
	struct dmm_info *dmm;
	struct sr_usb_dev_inst *usb;
	struct sr_config *src;
	const char *conn;

	drvc = di->context;
	dmm = (struct dmm_info *)di;

	conn = 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;
		}
	}
	if (!conn)
		return NULL;

	devices = NULL;
	if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
		g_slist_free_full(usb_devices, g_free);
		return NULL;
	}

	for (l = usb_devices; l; l = l->next) {
		usb = l->data;
		devc = g_malloc0(sizeof(struct dev_context));
		devc->first_run = TRUE;
		sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->status = SR_ST_INACTIVE;
		sdi->vendor = g_strdup(dmm->vendor);
		sdi->model = g_strdup(dmm->device);
		sdi->priv = devc;
		sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
		sdi->inst_type = SR_INST_USB;
		sdi->conn = usb;
		devices = g_slist_append(devices, sdi);
	}

	return std_scan_complete(di, devices);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_dev_driver *di;
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;

	di = sdi->driver;
	drvc = di->context;
	usb = sdi->conn;

	return sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
}

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;

	devc = sdi->priv;

	return sr_sw_limits_config_set(&devc->limits, key, data);
}

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)
{
	struct dev_context *devc;

	devc = sdi->priv;

	sr_sw_limits_acquisition_start(&devc->limits);

	std_session_send_df_header(sdi);

	sr_session_source_add(sdi->session, -1, 0, 10 /* poll_timeout */,
			uni_t_dmm_receive_data, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	std_session_send_df_end(sdi);
	sr_session_source_remove(sdi->session, -1);

	return SR_OK;
}

#define DMM(ID, CHIPSET, VENDOR, MODEL, BAUDRATE, PACKETSIZE, \
			VALID, PARSE, DETAILS) \
	&((struct dmm_info) { \
		{ \
			.name = ID, \
			.longname = VENDOR " " MODEL, \
			.api_version = 1, \
			.init = std_init, \
			.cleanup = std_cleanup, \
			.scan = scan, \
			.dev_list = std_dev_list, \
			.config_get = NULL, \
			.config_set = config_set, \
			.config_list = config_list, \
			.dev_open = dev_open, \
			.dev_close = std_dummy_dev_close /* TODO */, \
			.dev_acquisition_start = dev_acquisition_start, \
			.dev_acquisition_stop = dev_acquisition_stop, \
			.context = NULL, \
		}, \
		VENDOR, MODEL, BAUDRATE, PACKETSIZE, \
		VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
	}).di

SR_REGISTER_DEV_DRIVER_LIST(uni_t_dmm_drivers,
	DMM(
		"tecpel-dmm-8061", fs9721,
		"Tecpel", "DMM-8061", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c
	),
	DMM(
		"uni-t-ut372", ut372,
		"UNI-T", "UT372", 2400,
		UT372_PACKET_SIZE,
		sr_ut372_packet_valid, sr_ut372_parse,
		NULL
	),
	DMM(
		"uni-t-ut60a", fs9721,
		"UNI-T", "UT60A", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		NULL
	),
	DMM(
		"uni-t-ut60e", fs9721,
		"UNI-T", "UT60E", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c
	),
	DMM(
		"uni-t-ut60g", es519xx,
		/* The baudrate is actually 19230, see "Note 1" below. */
		"UNI-T", "UT60G", 19200,
		ES519XX_11B_PACKET_SIZE,
		sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
		NULL
	),
	DMM(
		"uni-t-ut61b", fs9922,
		"UNI-T", "UT61B", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL
	),
	DMM(
		"uni-t-ut61c", fs9922,
		"UNI-T", "UT61C", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL
	),
	DMM(
		"uni-t-ut61d", fs9922,
		"UNI-T", "UT61D", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL
	),
	DMM(
		"uni-t-ut61e", es519xx,
		/* The baudrate is actually 19230, see "Note 1" below. */
		"UNI-T", "UT61E", 19200,
		ES519XX_14B_PACKET_SIZE,
		sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
		NULL
	),
	DMM(
		"uni-t-ut71a", ut71x,
		"UNI-T", "UT71A", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"uni-t-ut71b", ut71x,
		"UNI-T", "UT71B", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"uni-t-ut71c", ut71x,
		"UNI-T", "UT71C", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"uni-t-ut71d", ut71x,
		"UNI-T", "UT71D", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"uni-t-ut71e", ut71x,
		"UNI-T", "UT71E", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"voltcraft-vc820", fs9721,
		"Voltcraft", "VC-820", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		NULL
	),
	DMM(
		"voltcraft-vc830", fs9922,
		/*
		 * Note: The VC830 doesn't set the 'volt' and 'diode' bits of
		 * the FS9922 protocol. Instead, it only sets the user-defined
		 * bit "z1" to indicate "diode mode" and "voltage".
		 */
		"Voltcraft", "VC-830", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		&sr_fs9922_z1_diode
	),
	DMM(
		"voltcraft-vc840", fs9721,
		"Voltcraft", "VC-840", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c
	),
	DMM(
		"voltcraft-vc870", vc870,
		"Voltcraft", "VC-870", 9600, VC870_PACKET_SIZE,
		sr_vc870_packet_valid, sr_vc870_parse, NULL
	),
	DMM(
		"voltcraft-vc920", ut71x,
		"Voltcraft", "VC-920", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"voltcraft-vc940", ut71x,
		"Voltcraft", "VC-940", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"voltcraft-vc960", ut71x,
		"Voltcraft", "VC-960", 2400, UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"tenma-72-7730", ut71x,
		"Tenma", "72-7730", 2400,
		UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"tenma-72-7732", ut71x,
		"Tenma", "72-7732", 2400,
		UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"tenma-72-9380a", ut71x,
		"Tenma", "72-9380A", 2400,
		UT71X_PACKET_SIZE,
		sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	),
	DMM(
		"tenma-72-7745", fs9721,
		"Tenma", "72-7745", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c
	),
	DMM(
		"tenma-72-7750", es519xx,
		/* The baudrate is actually 19230, see "Note 1" below. */
		"Tenma", "72-7750", 19200,
		ES519XX_11B_PACKET_SIZE,
		sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
		NULL
	),
);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de>
	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 2 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 <config.h>
	21	#include <stdlib.h>
	22	#include <string.h>
	23	#include <libsigrok/libsigrok.h>
	24	#include "libsigrok-internal.h"
	25	#include "protocol.h"
	26
	27	static const uint32_t scanopts[] = {
	28	SR_CONF_CONN,
	29	};
	30
	31	static const uint32_t devopts[] = {
	32	SR_CONF_MULTIMETER,
	33	SR_CONF_CONTINUOUS,
	34	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET \| SR_CONF_GET,
	35	SR_CONF_LIMIT_MSEC \| SR_CONF_SET \| SR_CONF_GET,
	36	};
	37
	38	/*
	39	* Note 1: The actual baudrate of the Cyrustek ES519xx chip used in this DMM
	40	* is 19230. However, the WCH CH9325 chip (UART to USB/HID) used in (some
	41	* versions of) the UNI-T UT-D04 cable doesn't support 19230 baud. It only
	42	* supports 19200, and setting an unsupported baudrate will result in the
	43	* default of 2400 being used (which will not work with this DMM, of course).
	44	*/
	45
	46	static GSList scan(struct sr_dev_driver di, GSList *options)
	47	{
	48	GSList usb_devices, devices, *l;
	49	struct sr_dev_inst *sdi;
	50	struct dev_context *devc;
	51	struct drv_context *drvc;
	52	struct dmm_info *dmm;
	53	struct sr_usb_dev_inst *usb;
	54	struct sr_config *src;
	55	const char *conn;
	56
	57	drvc = di->context;
	58	dmm = (struct dmm_info *)di;
	59
	60	conn = NULL;
	61	for (l = options; l; l = l->next) {
	62	src = l->data;
	63	switch (src->key) {
	64	case SR_CONF_CONN:
	65	conn = g_variant_get_string(src->data, NULL);
	66	break;
	67	}
	68	}
	69	if (!conn)
	70	return NULL;
	71
	72	devices = NULL;
	73	if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
	74	g_slist_free_full(usb_devices, g_free);
	75	return NULL;
	76	}
	77
	78	for (l = usb_devices; l; l = l->next) {
	79	usb = l->data;
	80	devc = g_malloc0(sizeof(struct dev_context));
	81	devc->first_run = TRUE;
	82	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	83	sdi->status = SR_ST_INACTIVE;
	84	sdi->vendor = g_strdup(dmm->vendor);
	85	sdi->model = g_strdup(dmm->device);
	86	sdi->priv = devc;
	87	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "P1");
	88	sdi->inst_type = SR_INST_USB;
	89	sdi->conn = usb;
	90	devices = g_slist_append(devices, sdi);
	91	}
	92
	93	return std_scan_complete(di, devices);
	94	}
	95
	96	static int dev_open(struct sr_dev_inst *sdi)
	97	{
	98	struct sr_dev_driver *di;
	99	struct drv_context *drvc;
	100	struct sr_usb_dev_inst *usb;
	101
	102	di = sdi->driver;
	103	drvc = di->context;
	104	usb = sdi->conn;
	105
	106	return sr_usb_open(drvc->sr_ctx->libusb_ctx, usb);
	107	}
	108
	109	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	110	const struct sr_channel_group *cg)
	111	{
	112	struct dev_context *devc;
	113
	114	(void)cg;
	115
	116	devc = sdi->priv;
	117
	118	return sr_sw_limits_config_set(&devc->limits, key, data);
	119	}
	120
	121	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	122	const struct sr_channel_group *cg)
	123	{
	124	(void)sdi;
	125	(void)cg;
	126
	127	switch (key) {
	128	case SR_CONF_SCAN_OPTIONS:
	129	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	130	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	131	break;
	132	case SR_CONF_DEVICE_OPTIONS:
	133	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	134	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	135	break;
	136	default:
	137	return SR_ERR_NA;
	138	}
	139
	140	return SR_OK;
	141	}
	142
	143	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	144	{
	145	struct dev_context *devc;
	146
	147	devc = sdi->priv;
	148
	149	sr_sw_limits_acquisition_start(&devc->limits);
	150
	151	std_session_send_df_header(sdi);
	152
	153	sr_session_source_add(sdi->session, -1, 0, 10 /* poll_timeout */,
	154	uni_t_dmm_receive_data, (void *)sdi);
	155
	156	return SR_OK;
	157	}
	158
	159	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	160	{
	161	std_session_send_df_end(sdi);
	162	sr_session_source_remove(sdi->session, -1);
	163
	164	return SR_OK;
	165	}
	166
	167	#define DMM(ID, CHIPSET, VENDOR, MODEL, BAUDRATE, PACKETSIZE, \
	168	VALID, PARSE, DETAILS) \
	169	&((struct dmm_info) { \
	170	{ \
	171	.name = ID, \
	172	.longname = VENDOR " " MODEL, \
	173	.api_version = 1, \
	174	.init = std_init, \
	175	.cleanup = std_cleanup, \
	176	.scan = scan, \
	177	.dev_list = std_dev_list, \
	178	.config_get = NULL, \
	179	.config_set = config_set, \
	180	.config_list = config_list, \
	181	.dev_open = dev_open, \
	182	.dev_close = std_dummy_dev_close /* TODO */, \
	183	.dev_acquisition_start = dev_acquisition_start, \
	184	.dev_acquisition_stop = dev_acquisition_stop, \
	185	.context = NULL, \
	186	}, \
	187	VENDOR, MODEL, BAUDRATE, PACKETSIZE, \
	188	VALID, PARSE, DETAILS, sizeof(struct CHIPSET##_info) \
	189	}).di
	190
	191	SR_REGISTER_DEV_DRIVER_LIST(uni_t_dmm_drivers,
	192	DMM(
	193	"tecpel-dmm-8061", fs9721,
	194	"Tecpel", "DMM-8061", 2400,
	195	FS9721_PACKET_SIZE,
	196	sr_fs9721_packet_valid, sr_fs9721_parse,
	197	sr_fs9721_00_temp_c
	198	),
	199	DMM(
	200	"uni-t-ut372", ut372,
	201	"UNI-T", "UT372", 2400,
	202	UT372_PACKET_SIZE,
	203	sr_ut372_packet_valid, sr_ut372_parse,
	204	NULL
	205	),
	206	DMM(
	207	"uni-t-ut60a", fs9721,
	208	"UNI-T", "UT60A", 2400,
	209	FS9721_PACKET_SIZE,
	210	sr_fs9721_packet_valid, sr_fs9721_parse,
	211	NULL
	212	),
	213	DMM(
	214	"uni-t-ut60e", fs9721,
	215	"UNI-T", "UT60E", 2400,
	216	FS9721_PACKET_SIZE,
	217	sr_fs9721_packet_valid, sr_fs9721_parse,
	218	sr_fs9721_00_temp_c
	219	),
	220	DMM(
	221	"uni-t-ut60g", es519xx,
	222	/* The baudrate is actually 19230, see "Note 1" below. */
	223	"UNI-T", "UT60G", 19200,
	224	ES519XX_11B_PACKET_SIZE,
	225	sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
	226	NULL
	227	),
	228	DMM(
	229	"uni-t-ut61b", fs9922,
	230	"UNI-T", "UT61B", 2400,
	231	FS9922_PACKET_SIZE,
	232	sr_fs9922_packet_valid, sr_fs9922_parse,
	233	NULL
	234	),
	235	DMM(
	236	"uni-t-ut61c", fs9922,
	237	"UNI-T", "UT61C", 2400,
	238	FS9922_PACKET_SIZE,
	239	sr_fs9922_packet_valid, sr_fs9922_parse,
	240	NULL
	241	),
	242	DMM(
	243	"uni-t-ut61d", fs9922,
	244	"UNI-T", "UT61D", 2400,
	245	FS9922_PACKET_SIZE,
	246	sr_fs9922_packet_valid, sr_fs9922_parse,
	247	NULL
	248	),
	249	DMM(
	250	"uni-t-ut61e", es519xx,
	251	/* The baudrate is actually 19230, see "Note 1" below. */
	252	"UNI-T", "UT61E", 19200,
	253	ES519XX_14B_PACKET_SIZE,
	254	sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
	255	NULL
	256	),
	257	DMM(
	258	"uni-t-ut71a", ut71x,
	259	"UNI-T", "UT71A", 2400, UT71X_PACKET_SIZE,
	260	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	261	),
	262	DMM(
	263	"uni-t-ut71b", ut71x,
	264	"UNI-T", "UT71B", 2400, UT71X_PACKET_SIZE,
	265	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	266	),
	267	DMM(
	268	"uni-t-ut71c", ut71x,
	269	"UNI-T", "UT71C", 2400, UT71X_PACKET_SIZE,
	270	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	271	),
	272	DMM(
	273	"uni-t-ut71d", ut71x,
	274	"UNI-T", "UT71D", 2400, UT71X_PACKET_SIZE,
	275	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	276	),
	277	DMM(
	278	"uni-t-ut71e", ut71x,
	279	"UNI-T", "UT71E", 2400, UT71X_PACKET_SIZE,
	280	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	281	),
	282	DMM(
	283	"voltcraft-vc820", fs9721,
	284	"Voltcraft", "VC-820", 2400,
	285	FS9721_PACKET_SIZE,
	286	sr_fs9721_packet_valid, sr_fs9721_parse,
	287	NULL
	288	),
	289	DMM(
	290	"voltcraft-vc830", fs9922,
	291	/*
	292	* Note: The VC830 doesn't set the 'volt' and 'diode' bits of
	293	* the FS9922 protocol. Instead, it only sets the user-defined
	294	* bit "z1" to indicate "diode mode" and "voltage".
	295	*/
	296	"Voltcraft", "VC-830", 2400,
	297	FS9922_PACKET_SIZE,
	298	sr_fs9922_packet_valid, sr_fs9922_parse,
	299	&sr_fs9922_z1_diode
	300	),
	301	DMM(
	302	"voltcraft-vc840", fs9721,
	303	"Voltcraft", "VC-840", 2400,
	304	FS9721_PACKET_SIZE,
	305	sr_fs9721_packet_valid, sr_fs9721_parse,
	306	sr_fs9721_00_temp_c
	307	),
	308	DMM(
	309	"voltcraft-vc870", vc870,
	310	"Voltcraft", "VC-870", 9600, VC870_PACKET_SIZE,
	311	sr_vc870_packet_valid, sr_vc870_parse, NULL
	312	),
	313	DMM(
	314	"voltcraft-vc920", ut71x,
	315	"Voltcraft", "VC-920", 2400, UT71X_PACKET_SIZE,
	316	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	317	),
	318	DMM(
	319	"voltcraft-vc940", ut71x,
	320	"Voltcraft", "VC-940", 2400, UT71X_PACKET_SIZE,
	321	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	322	),
	323	DMM(
	324	"voltcraft-vc960", ut71x,
	325	"Voltcraft", "VC-960", 2400, UT71X_PACKET_SIZE,
	326	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	327	),
	328	DMM(
	329	"tenma-72-7730", ut71x,
	330	"Tenma", "72-7730", 2400,
	331	UT71X_PACKET_SIZE,
	332	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	333	),
	334	DMM(
	335	"tenma-72-7732", ut71x,
	336	"Tenma", "72-7732", 2400,
	337	UT71X_PACKET_SIZE,
	338	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	339	),
	340	DMM(
	341	"tenma-72-9380a", ut71x,
	342	"Tenma", "72-9380A", 2400,
	343	UT71X_PACKET_SIZE,
	344	sr_ut71x_packet_valid, sr_ut71x_parse, NULL
	345	),
	346	DMM(
	347	"tenma-72-7745", fs9721,
	348	"Tenma", "72-7745", 2400,
	349	FS9721_PACKET_SIZE,
	350	sr_fs9721_packet_valid, sr_fs9721_parse,
	351	sr_fs9721_00_temp_c
	352	),
	353	DMM(
	354	"tenma-72-7750", es519xx,
	355	/* The baudrate is actually 19230, see "Note 1" below. */
	356	"Tenma", "72-7750", 19200,
	357	ES519XX_11B_PACKET_SIZE,
	358	sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
	359	NULL
	360	),
	361	);