[libsigrok.git] / 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <stdlib.h>
#include <string.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"

#define UNI_T_UT_D04_NEW "1a86.e008"

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

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 tecpel_dmm_8061_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut60a_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut60e_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;

SR_PRIV struct dmm_info udmms[] = {
	{
		"Tecpel", "DMM-8061", 2400,
		FS9721_PACKET_SIZE, NULL,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&tecpel_dmm_8061_driver_info, receive_data_TECPEL_DMM_8061,
	},
	{
		"UNI-T", "UT60A", 2400,
		FS9721_PACKET_SIZE, NULL,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		NULL,
		&uni_t_ut60a_driver_info, receive_data_UNI_T_UT60A,
	},
	{
		"UNI-T", "UT60E", 2400,
		FS9721_PACKET_SIZE, NULL,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&uni_t_ut60e_driver_info, receive_data_UNI_T_UT60E,
	},
	{
		"UNI-T", "UT61D", 2400,
		FS9922_PACKET_SIZE, NULL,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL,
		&uni_t_ut61d_driver_info, receive_data_UNI_T_UT61D,
	},
	{
		/*
		 * Important: The actual baudrate of the Cyrustek ES51922 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).
		 */
		"UNI-T", "UT61E", 19200,
		ES51922_PACKET_SIZE, NULL,
		sr_es51922_packet_valid, sr_es51922_parse,
		NULL,
		&uni_t_ut61e_driver_info, receive_data_UNI_T_UT61E,
	},
	{
		"Voltcraft", "VC-820", 2400,
		FS9721_PACKET_SIZE, NULL,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		NULL,
		&voltcraft_vc820_driver_info, receive_data_VOLTCRAFT_VC820,
	},
	{
		"Voltcraft", "VC-830", 2400,
		FS9922_PACKET_SIZE, NULL,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL,
		&voltcraft_vc830_driver_info, receive_data_VOLTCRAFT_VC830,
	},
	{
		"Voltcraft", "VC-840", 2400,
		FS9721_PACKET_SIZE, NULL,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&voltcraft_vc840_driver_info, receive_data_VOLTCRAFT_VC840,
	},
};

static int dev_clear(int dmm)
{
	return std_dev_clear(udmms[dmm].di, NULL);
}

static int init(struct sr_context *sr_ctx, int dmm)
{
	sr_dbg("Selected '%s' subdriver.", udmms[dmm].di->name);

	return std_init(sr_ctx, udmms[dmm].di, LOG_PREFIX);
}

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

	drvc = udmms[dmm].di->priv;

	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)
		conn = UNI_T_UT_D04_NEW;

	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;

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

		devc->first_run = TRUE;

		if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
				udmms[dmm].vendor, udmms[dmm].device, NULL))) {
			sr_err("sr_dev_inst_new returned NULL.");
			return NULL;
		}
		sdi->priv = devc;
		sdi->driver = udmms[dmm].di;
		if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
			return NULL;
		sdi->probes = g_slist_append(sdi->probes, probe);

		sdi->inst_type = SR_INST_USB;
		sdi->conn = usb;

		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);
	}

	return devices;
}

static GSList *dev_list(int dmm)
{
	return ((struct drv_context *)(udmms[dmm].di->priv))->instances;
}

static int dev_open(struct sr_dev_inst *sdi, int dmm)
{
	struct drv_context *drvc;
	struct sr_usb_dev_inst *usb;
	int ret;

	drvc = udmms[dmm].di->priv;
	usb = sdi->conn;

	if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
		sdi->status = SR_ST_ACTIVE;

	return ret;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	(void)sdi;

	/* TODO */

	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int cleanup(int dmm)
{
	return dev_clear(dmm);
}

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

	devc = sdi->priv;

	switch (id) {
	case SR_CONF_LIMIT_MSEC:
		if (g_variant_get_uint64(data) == 0) {
			sr_err("Time limit cannot 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:
		if (g_variant_get_uint64(data) == 0) {
			sr_err("Sample limit cannot be 0.");
			return SR_ERR;
		}
		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(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_NA;
	}

	return SR_OK;
}

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

	devc = sdi->priv;

	devc->cb_data = cb_data;

	devc->starttime = g_get_monotonic_time();

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

	sr_source_add(0, 0, 10 /* poll_timeout */,
		      udmms[dmm].receive_data, (void *)sdi);

	return SR_OK;
}

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

	(void)sdi;

	sr_dbg("Stopping acquisition.");

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

	/* TODO? */
	sr_source_remove(0);

	return SR_OK;
}

/* Driver-specific API function wrappers */
#define HW_INIT(X) \
static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
#define HW_CLEANUP(X) \
static int cleanup_##X(void) { return cleanup(X); }
#define HW_SCAN(X) \
static GSList *scan_##X(GSList *options) { return scan(options, X); }
#define HW_DEV_LIST(X) \
static GSList *dev_list_##X(void) { return dev_list(X); }
#define HW_DEV_CLEAR(X) \
static int dev_clear_##X(void) { return dev_clear(X); }
#define HW_DEV_ACQUISITION_START(X) \
static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
#define HW_DEV_OPEN(X) \
static int dev_open_##X(struct sr_dev_inst *sdi) { return dev_open(sdi, X); }

/* Driver structs and API function wrappers */
#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
HW_INIT(ID_UPPER) \
HW_CLEANUP(ID_UPPER) \
HW_SCAN(ID_UPPER) \
HW_DEV_LIST(ID_UPPER) \
HW_DEV_CLEAR(ID_UPPER) \
HW_DEV_ACQUISITION_START(ID_UPPER) \
HW_DEV_OPEN(ID_UPPER) \
SR_PRIV struct sr_dev_driver ID##_driver_info = { \
	.name = NAME, \
	.longname = LONGNAME, \
	.api_version = 1, \
	.init = init_##ID_UPPER, \
	.cleanup = cleanup_##ID_UPPER, \
	.scan = scan_##ID_UPPER, \
	.dev_list = dev_list_##ID_UPPER, \
	.dev_clear = dev_clear_##ID_UPPER, \
	.config_get = NULL, \
	.config_set = config_set, \
	.config_list = config_list, \
	.dev_open = dev_open_##ID_UPPER, \
	.dev_close = dev_close, \
	.dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
	.dev_acquisition_stop = dev_acquisition_stop, \
	.priv = NULL, \
};

DRV(tecpel_dmm_8061, TECPEL_DMM_8061, "tecpel-dmm-8061", "Tecpel DMM-8061")
DRV(uni_t_ut60a, UNI_T_UT60A, "uni-t-ut60a", "UNI-T UT60A")
DRV(uni_t_ut60e, UNI_T_UT60E, "uni-t-ut60e", "UNI-T UT60E")
DRV(uni_t_ut61d, UNI_T_UT61D, "uni-t-ut61d", "UNI-T UT61D")
DRV(uni_t_ut61e, UNI_T_UT61E, "uni-t-ut61e", "UNI-T UT61E")
DRV(voltcraft_vc820, VOLTCRAFT_VC820, "voltcraft-vc820", "Voltcraft VC-820")
DRV(voltcraft_vc830, VOLTCRAFT_VC830, "voltcraft-vc830", "Voltcraft VC-830")
DRV(voltcraft_vc840, VOLTCRAFT_VC840, "voltcraft-vc840", "Voltcraft VC-840")
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, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <stdlib.h>
	22	#include <string.h>
	23	#include "libsigrok.h"
	24	#include "libsigrok-internal.h"
	25	#include "protocol.h"
	26
	27	#define UNI_T_UT_D04_NEW "1a86.e008"
	28
	29	static const int32_t hwopts[] = {
	30	SR_CONF_CONN,
	31	};
	32
	33	static const int32_t hwcaps[] = {
	34	SR_CONF_MULTIMETER,
	35	SR_CONF_LIMIT_SAMPLES,
	36	SR_CONF_LIMIT_MSEC,
	37	SR_CONF_CONTINUOUS,
	38	};
	39
	40	SR_PRIV struct sr_dev_driver tecpel_dmm_8061_driver_info;
	41	SR_PRIV struct sr_dev_driver uni_t_ut60a_driver_info;
	42	SR_PRIV struct sr_dev_driver uni_t_ut60e_driver_info;
	43	SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
	44	SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
	45	SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
	46	SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
	47	SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;
	48
	49	SR_PRIV struct dmm_info udmms[] = {
	50	{
	51	"Tecpel", "DMM-8061", 2400,
	52	FS9721_PACKET_SIZE, NULL,
	53	sr_fs9721_packet_valid, sr_fs9721_parse,
	54	sr_fs9721_00_temp_c,
	55	&tecpel_dmm_8061_driver_info, receive_data_TECPEL_DMM_8061,
	56	},
	57	{
	58	"UNI-T", "UT60A", 2400,
	59	FS9721_PACKET_SIZE, NULL,
	60	sr_fs9721_packet_valid, sr_fs9721_parse,
	61	NULL,
	62	&uni_t_ut60a_driver_info, receive_data_UNI_T_UT60A,
	63	},
	64	{
	65	"UNI-T", "UT60E", 2400,
	66	FS9721_PACKET_SIZE, NULL,
	67	sr_fs9721_packet_valid, sr_fs9721_parse,
	68	sr_fs9721_00_temp_c,
	69	&uni_t_ut60e_driver_info, receive_data_UNI_T_UT60E,
	70	},
	71	{
	72	"UNI-T", "UT61D", 2400,
	73	FS9922_PACKET_SIZE, NULL,
	74	sr_fs9922_packet_valid, sr_fs9922_parse,
	75	NULL,
	76	&uni_t_ut61d_driver_info, receive_data_UNI_T_UT61D,
	77	},
	78	{
	79	/*
	80	* Important: The actual baudrate of the Cyrustek ES51922 chip
	81	* used in this DMM is 19230. However, the WCH CH9325 chip
	82	* (UART to USB/HID) used in (some versions of) the UNI-T
	83	* UT-D04 cable doesn't support 19230 baud. It only supports
	84	* 19200, and setting an unsupported baudrate will result in
	85	* the default of 2400 being used (which will not work with
	86	* this DMM, of course).
	87	*/
	88	"UNI-T", "UT61E", 19200,
	89	ES51922_PACKET_SIZE, NULL,
	90	sr_es51922_packet_valid, sr_es51922_parse,
	91	NULL,
	92	&uni_t_ut61e_driver_info, receive_data_UNI_T_UT61E,
	93	},
	94	{
	95	"Voltcraft", "VC-820", 2400,
	96	FS9721_PACKET_SIZE, NULL,
	97	sr_fs9721_packet_valid, sr_fs9721_parse,
	98	NULL,
	99	&voltcraft_vc820_driver_info, receive_data_VOLTCRAFT_VC820,
	100	},
	101	{
	102	"Voltcraft", "VC-830", 2400,
	103	FS9922_PACKET_SIZE, NULL,
	104	sr_fs9922_packet_valid, sr_fs9922_parse,
	105	NULL,
	106	&voltcraft_vc830_driver_info, receive_data_VOLTCRAFT_VC830,
	107	},
	108	{
	109	"Voltcraft", "VC-840", 2400,
	110	FS9721_PACKET_SIZE, NULL,
	111	sr_fs9721_packet_valid, sr_fs9721_parse,
	112	sr_fs9721_00_temp_c,
	113	&voltcraft_vc840_driver_info, receive_data_VOLTCRAFT_VC840,
	114	},
	115	};
	116
	117	static int dev_clear(int dmm)
	118	{
	119	return std_dev_clear(udmms[dmm].di, NULL);
	120	}
	121
	122	static int init(struct sr_context *sr_ctx, int dmm)
	123	{
	124	sr_dbg("Selected '%s' subdriver.", udmms[dmm].di->name);
	125
	126	return std_init(sr_ctx, udmms[dmm].di, LOG_PREFIX);
	127	}
	128
	129	static GSList scan(GSList options, int dmm)
	130	{
	131	GSList usb_devices, devices, *l;
	132	struct sr_dev_inst *sdi;
	133	struct dev_context *devc;
	134	struct drv_context *drvc;
	135	struct sr_usb_dev_inst *usb;
	136	struct sr_config *src;
	137	struct sr_probe *probe;
	138	const char *conn;
	139
	140	drvc = udmms[dmm].di->priv;
	141
	142	conn = NULL;
	143	for (l = options; l; l = l->next) {
	144	src = l->data;
	145	switch (src->key) {
	146	case SR_CONF_CONN:
	147	conn = g_variant_get_string(src->data, NULL);
	148	break;
	149	}
	150	}
	151	if (!conn)
	152	conn = UNI_T_UT_D04_NEW;
	153
	154	devices = NULL;
	155	if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
	156	g_slist_free_full(usb_devices, g_free);
	157	return NULL;
	158	}
	159
	160	for (l = usb_devices; l; l = l->next) {
	161	usb = l->data;
	162
	163	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	164	sr_err("Device context malloc failed.");
	165	return NULL;
	166	}
	167
	168	devc->first_run = TRUE;
	169
	170	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
	171	udmms[dmm].vendor, udmms[dmm].device, NULL))) {
	172	sr_err("sr_dev_inst_new returned NULL.");
	173	return NULL;
	174	}
	175	sdi->priv = devc;
	176	sdi->driver = udmms[dmm].di;
	177	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	178	return NULL;
	179	sdi->probes = g_slist_append(sdi->probes, probe);
	180
	181	sdi->inst_type = SR_INST_USB;
	182	sdi->conn = usb;
	183
	184	drvc->instances = g_slist_append(drvc->instances, sdi);
	185	devices = g_slist_append(devices, sdi);
	186	}
	187
	188	return devices;
	189	}
	190
	191	static GSList *dev_list(int dmm)
	192	{
	193	return ((struct drv_context *)(udmms[dmm].di->priv))->instances;
	194	}
	195
	196	static int dev_open(struct sr_dev_inst *sdi, int dmm)
	197	{
	198	struct drv_context *drvc;
	199	struct sr_usb_dev_inst *usb;
	200	int ret;
	201
	202	drvc = udmms[dmm].di->priv;
	203	usb = sdi->conn;
	204
	205	if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
	206	sdi->status = SR_ST_ACTIVE;
	207
	208	return ret;
	209	}
	210
	211	static int dev_close(struct sr_dev_inst *sdi)
	212	{
	213	(void)sdi;
	214
	215	/* TODO */
	216
	217	sdi->status = SR_ST_INACTIVE;
	218
	219	return SR_OK;
	220	}
	221
	222	static int cleanup(int dmm)
	223	{
	224	return dev_clear(dmm);
	225	}
	226
	227	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi)
	228	{
	229	struct dev_context *devc;
	230
	231	devc = sdi->priv;
	232
	233	switch (id) {
	234	case SR_CONF_LIMIT_MSEC:
	235	if (g_variant_get_uint64(data) == 0) {
	236	sr_err("Time limit cannot be 0.");
	237	return SR_ERR;
	238	}
	239	devc->limit_msec = g_variant_get_uint64(data);
	240	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	241	devc->limit_msec);
	242	break;
	243	case SR_CONF_LIMIT_SAMPLES:
	244	if (g_variant_get_uint64(data) == 0) {
	245	sr_err("Sample limit cannot be 0.");
	246	return SR_ERR;
	247	}
	248	devc->limit_samples = g_variant_get_uint64(data);
	249	sr_dbg("Setting sample limit to %" PRIu64 ".",
	250	devc->limit_samples);
	251	break;
	252	default:
	253	return SR_ERR_NA;
	254	}
	255
	256	return SR_OK;
	257	}
	258
	259	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	260	{
	261	(void)sdi;
	262
	263	switch (key) {
	264	case SR_CONF_SCAN_OPTIONS:
	265	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	266	hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
	267	break;
	268	case SR_CONF_DEVICE_OPTIONS:
	269	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	270	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	271	break;
	272	default:
	273	return SR_ERR_NA;
	274	}
	275
	276	return SR_OK;
	277	}
	278
	279	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	280	void *cb_data, int dmm)
	281	{
	282	struct dev_context *devc;
	283
	284	devc = sdi->priv;
	285
	286	devc->cb_data = cb_data;
	287
	288	devc->starttime = g_get_monotonic_time();
	289
	290	/* Send header packet to the session bus. */
	291	std_session_send_df_header(cb_data, LOG_PREFIX);
	292
	293	sr_source_add(0, 0, 10 /* poll_timeout */,
	294	udmms[dmm].receive_data, (void *)sdi);
	295
	296	return SR_OK;
	297	}
	298
	299	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	300	{
	301	struct sr_datafeed_packet packet;
	302
	303	(void)sdi;
	304
	305	sr_dbg("Stopping acquisition.");
	306
	307	/* Send end packet to the session bus. */
	308	sr_dbg("Sending SR_DF_END.");
	309	packet.type = SR_DF_END;
	310	sr_session_send(cb_data, &packet);
	311
	312	/* TODO? */
	313	sr_source_remove(0);
	314
	315	return SR_OK;
	316	}
	317
	318	/* Driver-specific API function wrappers */
	319	#define HW_INIT(X) \
	320	static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
	321	#define HW_CLEANUP(X) \
	322	static int cleanup_##X(void) { return cleanup(X); }
	323	#define HW_SCAN(X) \
	324	static GSList scan_##X(GSList options) { return scan(options, X); }
	325	#define HW_DEV_LIST(X) \
	326	static GSList *dev_list_##X(void) { return dev_list(X); }
	327	#define HW_DEV_CLEAR(X) \
	328	static int dev_clear_##X(void) { return dev_clear(X); }
	329	#define HW_DEV_ACQUISITION_START(X) \
	330	static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
	331	void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
	332	#define HW_DEV_OPEN(X) \
	333	static int dev_open_##X(struct sr_dev_inst *sdi) { return dev_open(sdi, X); }
	334
	335	/* Driver structs and API function wrappers */
	336	#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
	337	HW_INIT(ID_UPPER) \
	338	HW_CLEANUP(ID_UPPER) \
	339	HW_SCAN(ID_UPPER) \
	340	HW_DEV_LIST(ID_UPPER) \
	341	HW_DEV_CLEAR(ID_UPPER) \
	342	HW_DEV_ACQUISITION_START(ID_UPPER) \
	343	HW_DEV_OPEN(ID_UPPER) \
	344	SR_PRIV struct sr_dev_driver ID##_driver_info = { \
	345	.name = NAME, \
	346	.longname = LONGNAME, \
	347	.api_version = 1, \
	348	.init = init_##ID_UPPER, \
	349	.cleanup = cleanup_##ID_UPPER, \
	350	.scan = scan_##ID_UPPER, \
	351	.dev_list = dev_list_##ID_UPPER, \
	352	.dev_clear = dev_clear_##ID_UPPER, \
	353	.config_get = NULL, \
	354	.config_set = config_set, \
	355	.config_list = config_list, \
	356	.dev_open = dev_open_##ID_UPPER, \
	357	.dev_close = dev_close, \
	358	.dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
	359	.dev_acquisition_stop = dev_acquisition_stop, \
	360	.priv = NULL, \
	361	};
	362
	363	DRV(tecpel_dmm_8061, TECPEL_DMM_8061, "tecpel-dmm-8061", "Tecpel DMM-8061")
	364	DRV(uni_t_ut60a, UNI_T_UT60A, "uni-t-ut60a", "UNI-T UT60A")
	365	DRV(uni_t_ut60e, UNI_T_UT60E, "uni-t-ut60e", "UNI-T UT60E")
	366	DRV(uni_t_ut61d, UNI_T_UT61D, "uni-t-ut61d", "UNI-T UT61D")
	367	DRV(uni_t_ut61e, UNI_T_UT61E, "uni-t-ut61e", "UNI-T UT61E")
	368	DRV(voltcraft_vc820, VOLTCRAFT_VC820, "voltcraft-vc820", "Voltcraft VC-820")
	369	DRV(voltcraft_vc830, VOLTCRAFT_VC830, "voltcraft-vc830", "Voltcraft VC-830")
	370	DRV(voltcraft_vc840, VOLTCRAFT_VC840, "voltcraft-vc840", "Voltcraft VC-840")