[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, 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 uint32_t hwopts[] = {
	SR_CONF_CONN,
};

static const uint32_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_ut60g_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut61b_driver_info;
SR_PRIV struct sr_dev_driver uni_t_ut61c_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 sr_dev_driver tenma_72_7745_driver_info;
SR_PRIV struct sr_dev_driver tenma_72_7750_driver_info;

SR_PRIV struct dmm_info udmms[] = {
	{
		"Tecpel", "DMM-8061", 2400,
		FS9721_PACKET_SIZE,
		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,
		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,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&uni_t_ut60e_driver_info, receive_data_UNI_T_UT60E,
	},
	{
		/* 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,
		&uni_t_ut60g_driver_info, receive_data_UNI_T_UT60G,
	},
	{
		"UNI-T", "UT61B", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL,
		&uni_t_ut61b_driver_info, receive_data_UNI_T_UT61B,
	},
	{
		"UNI-T", "UT61C", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL,
		&uni_t_ut61c_driver_info, receive_data_UNI_T_UT61C,
	},
	{
		"UNI-T", "UT61D", 2400,
		FS9922_PACKET_SIZE,
		sr_fs9922_packet_valid, sr_fs9922_parse,
		NULL,
		&uni_t_ut61d_driver_info, receive_data_UNI_T_UT61D,
	},
	{
		/* 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,
		&uni_t_ut61e_driver_info, receive_data_UNI_T_UT61E,
	},
	{
		"Voltcraft", "VC-820", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		NULL,
		&voltcraft_vc820_driver_info, receive_data_VOLTCRAFT_VC820,
	},
	{
		/*
		 * 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,
		&voltcraft_vc830_driver_info, receive_data_VOLTCRAFT_VC830,
	},
	{
		"Voltcraft", "VC-840", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&voltcraft_vc840_driver_info, receive_data_VOLTCRAFT_VC840,
	},
	{
		"Tenma", "72-7745", 2400,
		FS9721_PACKET_SIZE,
		sr_fs9721_packet_valid, sr_fs9721_parse,
		sr_fs9721_00_temp_c,
		&tenma_72_7745_driver_info, receive_data_TENMA_72_7745,
	},
	{
		/* 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,
		&tenma_72_7750_driver_info, receive_data_TENMA_72_7750,
	},
};

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

static int init(struct sr_context *sr_ctx, int dmm)
{
	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_channel *ch;
	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)
		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;

		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 (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1")))
			return NULL;
		sdi->channels = g_slist_append(sdi->channels, ch);

		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)
{
	/* TODO */

	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

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

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;

	switch (key) {
	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(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,
				hwopts, ARRAY_SIZE(hwopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				hwcaps, ARRAY_SIZE(hwcaps), 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, 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(sdi, LOG_PREFIX);

	sr_session_source_add(sdi->session, 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)cb_data;

	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(sdi, &packet);

	sr_session_source_remove(sdi->session, 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_ut60g, UNI_T_UT60G, "uni-t-ut60g", "UNI-T UT60G")
DRV(uni_t_ut61b, UNI_T_UT61B, "uni-t-ut61b", "UNI-T UT61B")
DRV(uni_t_ut61c, UNI_T_UT61C, "uni-t-ut61c", "UNI-T UT61C")
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")
DRV(tenma_72_7745, TENMA_72_7745, "tenma-72-7745", "Tenma 72-7745")
DRV(tenma_72_7750, TENMA_72_7750, "tenma-72-7750", "Tenma 72-7750")
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 uint32_t hwopts[] = {
	30	SR_CONF_CONN,
	31	};
	32
	33	static const uint32_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_ut60g_driver_info;
	44	SR_PRIV struct sr_dev_driver uni_t_ut61b_driver_info;
	45	SR_PRIV struct sr_dev_driver uni_t_ut61c_driver_info;
	46	SR_PRIV struct sr_dev_driver uni_t_ut61d_driver_info;
	47	SR_PRIV struct sr_dev_driver uni_t_ut61e_driver_info;
	48	SR_PRIV struct sr_dev_driver voltcraft_vc820_driver_info;
	49	SR_PRIV struct sr_dev_driver voltcraft_vc830_driver_info;
	50	SR_PRIV struct sr_dev_driver voltcraft_vc840_driver_info;
	51	SR_PRIV struct sr_dev_driver tenma_72_7745_driver_info;
	52	SR_PRIV struct sr_dev_driver tenma_72_7750_driver_info;
	53
	54	SR_PRIV struct dmm_info udmms[] = {
	55	{
	56	"Tecpel", "DMM-8061", 2400,
	57	FS9721_PACKET_SIZE,
	58	sr_fs9721_packet_valid, sr_fs9721_parse,
	59	sr_fs9721_00_temp_c,
	60	&tecpel_dmm_8061_driver_info, receive_data_TECPEL_DMM_8061,
	61	},
	62	{
	63	"UNI-T", "UT60A", 2400,
	64	FS9721_PACKET_SIZE,
	65	sr_fs9721_packet_valid, sr_fs9721_parse,
	66	NULL,
	67	&uni_t_ut60a_driver_info, receive_data_UNI_T_UT60A,
	68	},
	69	{
	70	"UNI-T", "UT60E", 2400,
	71	FS9721_PACKET_SIZE,
	72	sr_fs9721_packet_valid, sr_fs9721_parse,
	73	sr_fs9721_00_temp_c,
	74	&uni_t_ut60e_driver_info, receive_data_UNI_T_UT60E,
	75	},
	76	{
	77	/* The baudrate is actually 19230, see "Note 1" below. */
	78	"UNI-T", "UT60G", 19200,
	79	ES519XX_11B_PACKET_SIZE,
	80	sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
	81	NULL,
	82	&uni_t_ut60g_driver_info, receive_data_UNI_T_UT60G,
	83	},
	84	{
	85	"UNI-T", "UT61B", 2400,
	86	FS9922_PACKET_SIZE,
	87	sr_fs9922_packet_valid, sr_fs9922_parse,
	88	NULL,
	89	&uni_t_ut61b_driver_info, receive_data_UNI_T_UT61B,
	90	},
	91	{
	92	"UNI-T", "UT61C", 2400,
	93	FS9922_PACKET_SIZE,
	94	sr_fs9922_packet_valid, sr_fs9922_parse,
	95	NULL,
	96	&uni_t_ut61c_driver_info, receive_data_UNI_T_UT61C,
	97	},
	98	{
	99	"UNI-T", "UT61D", 2400,
	100	FS9922_PACKET_SIZE,
	101	sr_fs9922_packet_valid, sr_fs9922_parse,
	102	NULL,
	103	&uni_t_ut61d_driver_info, receive_data_UNI_T_UT61D,
	104	},
	105	{
	106	/* The baudrate is actually 19230, see "Note 1" below. */
	107	"UNI-T", "UT61E", 19200,
	108	ES519XX_14B_PACKET_SIZE,
	109	sr_es519xx_19200_14b_packet_valid, sr_es519xx_19200_14b_parse,
	110	NULL,
	111	&uni_t_ut61e_driver_info, receive_data_UNI_T_UT61E,
	112	},
	113	{
	114	"Voltcraft", "VC-820", 2400,
	115	FS9721_PACKET_SIZE,
	116	sr_fs9721_packet_valid, sr_fs9721_parse,
	117	NULL,
	118	&voltcraft_vc820_driver_info, receive_data_VOLTCRAFT_VC820,
	119	},
	120	{
	121	/*
	122	* Note: The VC830 doesn't set the 'volt' and 'diode' bits of
	123	* the FS9922 protocol. Instead, it only sets the user-defined
	124	* bit "z1" to indicate "diode mode" and "voltage".
	125	*/
	126	"Voltcraft", "VC-830", 2400,
	127	FS9922_PACKET_SIZE,
	128	sr_fs9922_packet_valid, sr_fs9922_parse,
	129	&sr_fs9922_z1_diode,
	130	&voltcraft_vc830_driver_info, receive_data_VOLTCRAFT_VC830,
	131	},
	132	{
	133	"Voltcraft", "VC-840", 2400,
	134	FS9721_PACKET_SIZE,
	135	sr_fs9721_packet_valid, sr_fs9721_parse,
	136	sr_fs9721_00_temp_c,
	137	&voltcraft_vc840_driver_info, receive_data_VOLTCRAFT_VC840,
	138	},
	139	{
	140	"Tenma", "72-7745", 2400,
	141	FS9721_PACKET_SIZE,
	142	sr_fs9721_packet_valid, sr_fs9721_parse,
	143	sr_fs9721_00_temp_c,
	144	&tenma_72_7745_driver_info, receive_data_TENMA_72_7745,
	145	},
	146	{
	147	/* The baudrate is actually 19230, see "Note 1" below. */
	148	"Tenma", "72-7750", 19200,
	149	ES519XX_11B_PACKET_SIZE,
	150	sr_es519xx_19200_11b_packet_valid, sr_es519xx_19200_11b_parse,
	151	NULL,
	152	&tenma_72_7750_driver_info, receive_data_TENMA_72_7750,
	153	},
	154	};
	155
	156	/*
	157	* Note 1: The actual baudrate of the Cyrustek ES519xx chip used in this DMM
	158	* is 19230. However, the WCH CH9325 chip (UART to USB/HID) used in (some
	159	* versions of) the UNI-T UT-D04 cable doesn't support 19230 baud. It only
	160	* supports 19200, and setting an unsupported baudrate will result in the
	161	* default of 2400 being used (which will not work with this DMM, of course).
	162	*/
	163
	164	static int dev_clear(int dmm)
	165	{
	166	return std_dev_clear(udmms[dmm].di, NULL);
	167	}
	168
	169	static int init(struct sr_context *sr_ctx, int dmm)
	170	{
	171	return std_init(sr_ctx, udmms[dmm].di, LOG_PREFIX);
	172	}
	173
	174	static GSList scan(GSList options, int dmm)
	175	{
	176	GSList usb_devices, devices, *l;
	177	struct sr_dev_inst *sdi;
	178	struct dev_context *devc;
	179	struct drv_context *drvc;
	180	struct sr_usb_dev_inst *usb;
	181	struct sr_config *src;
	182	struct sr_channel *ch;
	183	const char *conn;
	184
	185	drvc = udmms[dmm].di->priv;
	186
	187	conn = NULL;
	188	for (l = options; l; l = l->next) {
	189	src = l->data;
	190	switch (src->key) {
	191	case SR_CONF_CONN:
	192	conn = g_variant_get_string(src->data, NULL);
	193	break;
	194	}
	195	}
	196	if (!conn)
	197	return NULL;
	198
	199	devices = NULL;
	200	if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
	201	g_slist_free_full(usb_devices, g_free);
	202	return NULL;
	203	}
	204
	205	for (l = usb_devices; l; l = l->next) {
	206	usb = l->data;
	207
	208	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	209	sr_err("Device context malloc failed.");
	210	return NULL;
	211	}
	212
	213	devc->first_run = TRUE;
	214
	215	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
	216	udmms[dmm].vendor, udmms[dmm].device, NULL))) {
	217	sr_err("sr_dev_inst_new returned NULL.");
	218	return NULL;
	219	}
	220	sdi->priv = devc;
	221	sdi->driver = udmms[dmm].di;
	222	if (!(ch = sr_channel_new(0, SR_CHANNEL_ANALOG, TRUE, "P1")))
	223	return NULL;
	224	sdi->channels = g_slist_append(sdi->channels, ch);
	225
	226	sdi->inst_type = SR_INST_USB;
	227	sdi->conn = usb;
	228
	229	drvc->instances = g_slist_append(drvc->instances, sdi);
	230	devices = g_slist_append(devices, sdi);
	231	}
	232
	233	return devices;
	234	}
	235
	236	static GSList *dev_list(int dmm)
	237	{
	238	return ((struct drv_context *)(udmms[dmm].di->priv))->instances;
	239	}
	240
	241	static int dev_open(struct sr_dev_inst *sdi, int dmm)
	242	{
	243	struct drv_context *drvc;
	244	struct sr_usb_dev_inst *usb;
	245	int ret;
	246
	247	drvc = udmms[dmm].di->priv;
	248	usb = sdi->conn;
	249
	250	if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
	251	sdi->status = SR_ST_ACTIVE;
	252
	253	return ret;
	254	}
	255
	256	static int dev_close(struct sr_dev_inst *sdi)
	257	{
	258	/* TODO */
	259
	260	sdi->status = SR_ST_INACTIVE;
	261
	262	return SR_OK;
	263	}
	264
	265	static int cleanup(int dmm)
	266	{
	267	return dev_clear(dmm);
	268	}
	269
	270	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	271	const struct sr_channel_group *cg)
	272	{
	273	struct dev_context *devc;
	274
	275	(void)cg;
	276
	277	devc = sdi->priv;
	278
	279	switch (key) {
	280	case SR_CONF_LIMIT_MSEC:
	281	if (g_variant_get_uint64(data) == 0) {
	282	sr_err("Time limit cannot be 0.");
	283	return SR_ERR;
	284	}
	285	devc->limit_msec = g_variant_get_uint64(data);
	286	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	287	devc->limit_msec);
	288	break;
	289	case SR_CONF_LIMIT_SAMPLES:
	290	if (g_variant_get_uint64(data) == 0) {
	291	sr_err("Sample limit cannot be 0.");
	292	return SR_ERR;
	293	}
	294	devc->limit_samples = g_variant_get_uint64(data);
	295	sr_dbg("Setting sample limit to %" PRIu64 ".",
	296	devc->limit_samples);
	297	break;
	298	default:
	299	return SR_ERR_NA;
	300	}
	301
	302	return SR_OK;
	303	}
	304
	305	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	306	const struct sr_channel_group *cg)
	307	{
	308	(void)sdi;
	309	(void)cg;
	310
	311	switch (key) {
	312	case SR_CONF_SCAN_OPTIONS:
	313	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	314	hwopts, ARRAY_SIZE(hwopts), sizeof(uint32_t));
	315	break;
	316	case SR_CONF_DEVICE_OPTIONS:
	317	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	318	hwcaps, ARRAY_SIZE(hwcaps), sizeof(uint32_t));
	319	break;
	320	default:
	321	return SR_ERR_NA;
	322	}
	323
	324	return SR_OK;
	325	}
	326
	327	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	328	void *cb_data, int dmm)
	329	{
	330	struct dev_context *devc;
	331
	332	devc = sdi->priv;
	333
	334	devc->cb_data = cb_data;
	335
	336	devc->starttime = g_get_monotonic_time();
	337
	338	/* Send header packet to the session bus. */
	339	std_session_send_df_header(sdi, LOG_PREFIX);
	340
	341	sr_session_source_add(sdi->session, 0, 0, 10 /* poll_timeout */,
	342	udmms[dmm].receive_data, (void *)sdi);
	343
	344	return SR_OK;
	345	}
	346
	347	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	348	{
	349	struct sr_datafeed_packet packet;
	350
	351	(void)cb_data;
	352
	353	sr_dbg("Stopping acquisition.");
	354
	355	/* Send end packet to the session bus. */
	356	sr_dbg("Sending SR_DF_END.");
	357	packet.type = SR_DF_END;
	358	sr_session_send(sdi, &packet);
	359
	360	sr_session_source_remove(sdi->session, 0);
	361
	362	return SR_OK;
	363	}
	364
	365	/* Driver-specific API function wrappers */
	366	#define HW_INIT(X) \
	367	static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
	368	#define HW_CLEANUP(X) \
	369	static int cleanup_##X(void) { return cleanup(X); }
	370	#define HW_SCAN(X) \
	371	static GSList scan_##X(GSList options) { return scan(options, X); }
	372	#define HW_DEV_LIST(X) \
	373	static GSList *dev_list_##X(void) { return dev_list(X); }
	374	#define HW_DEV_CLEAR(X) \
	375	static int dev_clear_##X(void) { return dev_clear(X); }
	376	#define HW_DEV_ACQUISITION_START(X) \
	377	static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
	378	void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
	379	#define HW_DEV_OPEN(X) \
	380	static int dev_open_##X(struct sr_dev_inst *sdi) { return dev_open(sdi, X); }
	381
	382	/* Driver structs and API function wrappers */
	383	#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
	384	HW_INIT(ID_UPPER) \
	385	HW_CLEANUP(ID_UPPER) \
	386	HW_SCAN(ID_UPPER) \
	387	HW_DEV_LIST(ID_UPPER) \
	388	HW_DEV_CLEAR(ID_UPPER) \
	389	HW_DEV_ACQUISITION_START(ID_UPPER) \
	390	HW_DEV_OPEN(ID_UPPER) \
	391	SR_PRIV struct sr_dev_driver ID##_driver_info = { \
	392	.name = NAME, \
	393	.longname = LONGNAME, \
	394	.api_version = 1, \
	395	.init = init_##ID_UPPER, \
	396	.cleanup = cleanup_##ID_UPPER, \
	397	.scan = scan_##ID_UPPER, \
	398	.dev_list = dev_list_##ID_UPPER, \
	399	.dev_clear = dev_clear_##ID_UPPER, \
	400	.config_get = NULL, \
	401	.config_set = config_set, \
	402	.config_list = config_list, \
	403	.dev_open = dev_open_##ID_UPPER, \
	404	.dev_close = dev_close, \
	405	.dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
	406	.dev_acquisition_stop = dev_acquisition_stop, \
	407	.priv = NULL, \
	408	};
	409
	410	DRV(tecpel_dmm_8061, TECPEL_DMM_8061, "tecpel-dmm-8061", "Tecpel DMM-8061")
	411	DRV(uni_t_ut60a, UNI_T_UT60A, "uni-t-ut60a", "UNI-T UT60A")
	412	DRV(uni_t_ut60e, UNI_T_UT60E, "uni-t-ut60e", "UNI-T UT60E")
	413	DRV(uni_t_ut60g, UNI_T_UT60G, "uni-t-ut60g", "UNI-T UT60G")
	414	DRV(uni_t_ut61b, UNI_T_UT61B, "uni-t-ut61b", "UNI-T UT61B")
	415	DRV(uni_t_ut61c, UNI_T_UT61C, "uni-t-ut61c", "UNI-T UT61C")
	416	DRV(uni_t_ut61d, UNI_T_UT61D, "uni-t-ut61d", "UNI-T UT61D")
	417	DRV(uni_t_ut61e, UNI_T_UT61E, "uni-t-ut61e", "UNI-T UT61E")
	418	DRV(voltcraft_vc820, VOLTCRAFT_VC820, "voltcraft-vc820", "Voltcraft VC-820")
	419	DRV(voltcraft_vc830, VOLTCRAFT_VC830, "voltcraft-vc830", "Voltcraft VC-830")
	420	DRV(voltcraft_vc840, VOLTCRAFT_VC840, "voltcraft-vc840", "Voltcraft VC-840")
	421	DRV(tenma_72_7745, TENMA_72_7745, "tenma-72-7745", "Tenma 72-7745")
	422	DRV(tenma_72_7750, TENMA_72_7750, "tenma-72-7750", "Tenma 72-7750")