[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_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)
{
	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_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_probe_new(0, SR_PROBE_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)
{
	(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,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

	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,
		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_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_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 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_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	sr_dbg("Selected '%s' subdriver.", udmms[dmm].di->name);
	172
	173	return std_init(sr_ctx, udmms[dmm].di, LOG_PREFIX);
	174	}
	175
	176	static GSList scan(GSList options, int dmm)
	177	{
	178	GSList usb_devices, devices, *l;
	179	struct sr_dev_inst *sdi;
	180	struct dev_context *devc;
	181	struct drv_context *drvc;
	182	struct sr_usb_dev_inst *usb;
	183	struct sr_config *src;
	184	struct sr_channel *ch;
	185	const char *conn;
	186
	187	drvc = udmms[dmm].di->priv;
	188
	189	conn = NULL;
	190	for (l = options; l; l = l->next) {
	191	src = l->data;
	192	switch (src->key) {
	193	case SR_CONF_CONN:
	194	conn = g_variant_get_string(src->data, NULL);
	195	break;
	196	}
	197	}
	198	if (!conn)
	199	return NULL;
	200
	201	devices = NULL;
	202	if (!(usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) {
	203	g_slist_free_full(usb_devices, g_free);
	204	return NULL;
	205	}
	206
	207	for (l = usb_devices; l; l = l->next) {
	208	usb = l->data;
	209
	210	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	211	sr_err("Device context malloc failed.");
	212	return NULL;
	213	}
	214
	215	devc->first_run = TRUE;
	216
	217	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE,
	218	udmms[dmm].vendor, udmms[dmm].device, NULL))) {
	219	sr_err("sr_dev_inst_new returned NULL.");
	220	return NULL;
	221	}
	222	sdi->priv = devc;
	223	sdi->driver = udmms[dmm].di;
	224	if (!(ch = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	225	return NULL;
	226	sdi->channels = g_slist_append(sdi->channels, ch);
	227
	228	sdi->inst_type = SR_INST_USB;
	229	sdi->conn = usb;
	230
	231	drvc->instances = g_slist_append(drvc->instances, sdi);
	232	devices = g_slist_append(devices, sdi);
	233	}
	234
	235	return devices;
	236	}
	237
	238	static GSList *dev_list(int dmm)
	239	{
	240	return ((struct drv_context *)(udmms[dmm].di->priv))->instances;
	241	}
	242
	243	static int dev_open(struct sr_dev_inst *sdi, int dmm)
	244	{
	245	struct drv_context *drvc;
	246	struct sr_usb_dev_inst *usb;
	247	int ret;
	248
	249	drvc = udmms[dmm].di->priv;
	250	usb = sdi->conn;
	251
	252	if ((ret = sr_usb_open(drvc->sr_ctx->libusb_ctx, usb)) == SR_OK)
	253	sdi->status = SR_ST_ACTIVE;
	254
	255	return ret;
	256	}
	257
	258	static int dev_close(struct sr_dev_inst *sdi)
	259	{
	260	(void)sdi;
	261
	262	/* TODO */
	263
	264	sdi->status = SR_ST_INACTIVE;
	265
	266	return SR_OK;
	267	}
	268
	269	static int cleanup(int dmm)
	270	{
	271	return dev_clear(dmm);
	272	}
	273
	274	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi,
	275	const struct sr_channel_group *cg)
	276	{
	277	struct dev_context *devc;
	278
	279	(void)cg;
	280
	281	devc = sdi->priv;
	282
	283	switch (id) {
	284	case SR_CONF_LIMIT_MSEC:
	285	if (g_variant_get_uint64(data) == 0) {
	286	sr_err("Time limit cannot be 0.");
	287	return SR_ERR;
	288	}
	289	devc->limit_msec = g_variant_get_uint64(data);
	290	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	291	devc->limit_msec);
	292	break;
	293	case SR_CONF_LIMIT_SAMPLES:
	294	if (g_variant_get_uint64(data) == 0) {
	295	sr_err("Sample limit cannot be 0.");
	296	return SR_ERR;
	297	}
	298	devc->limit_samples = g_variant_get_uint64(data);
	299	sr_dbg("Setting sample limit to %" PRIu64 ".",
	300	devc->limit_samples);
	301	break;
	302	default:
	303	return SR_ERR_NA;
	304	}
	305
	306	return SR_OK;
	307	}
	308
	309	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
	310	const struct sr_channel_group *cg)
	311	{
	312	(void)sdi;
	313	(void)cg;
	314
	315	switch (key) {
	316	case SR_CONF_SCAN_OPTIONS:
	317	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	318	hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
	319	break;
	320	case SR_CONF_DEVICE_OPTIONS:
	321	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	322	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	323	break;
	324	default:
	325	return SR_ERR_NA;
	326	}
	327
	328	return SR_OK;
	329	}
	330
	331	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	332	void *cb_data, int dmm)
	333	{
	334	struct dev_context *devc;
	335
	336	devc = sdi->priv;
	337
	338	devc->cb_data = cb_data;
	339
	340	devc->starttime = g_get_monotonic_time();
	341
	342	/* Send header packet to the session bus. */
	343	std_session_send_df_header(cb_data, LOG_PREFIX);
	344
	345	sr_source_add(0, 0, 10 /* poll_timeout */,
	346	udmms[dmm].receive_data, (void *)sdi);
	347
	348	return SR_OK;
	349	}
	350
	351	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	352	{
	353	struct sr_datafeed_packet packet;
	354
	355	(void)sdi;
	356
	357	sr_dbg("Stopping acquisition.");
	358
	359	/* Send end packet to the session bus. */
	360	sr_dbg("Sending SR_DF_END.");
	361	packet.type = SR_DF_END;
	362	sr_session_send(cb_data, &packet);
	363
	364	/* TODO? */
	365	sr_source_remove(0);
	366
	367	return SR_OK;
	368	}
	369
	370	/* Driver-specific API function wrappers */
	371	#define HW_INIT(X) \
	372	static int init_##X(struct sr_context *sr_ctx) { return init(sr_ctx, X); }
	373	#define HW_CLEANUP(X) \
	374	static int cleanup_##X(void) { return cleanup(X); }
	375	#define HW_SCAN(X) \
	376	static GSList scan_##X(GSList options) { return scan(options, X); }
	377	#define HW_DEV_LIST(X) \
	378	static GSList *dev_list_##X(void) { return dev_list(X); }
	379	#define HW_DEV_CLEAR(X) \
	380	static int dev_clear_##X(void) { return dev_clear(X); }
	381	#define HW_DEV_ACQUISITION_START(X) \
	382	static int dev_acquisition_start_##X(const struct sr_dev_inst *sdi, \
	383	void *cb_data) { return dev_acquisition_start(sdi, cb_data, X); }
	384	#define HW_DEV_OPEN(X) \
	385	static int dev_open_##X(struct sr_dev_inst *sdi) { return dev_open(sdi, X); }
	386
	387	/* Driver structs and API function wrappers */
	388	#define DRV(ID, ID_UPPER, NAME, LONGNAME) \
	389	HW_INIT(ID_UPPER) \
	390	HW_CLEANUP(ID_UPPER) \
	391	HW_SCAN(ID_UPPER) \
	392	HW_DEV_LIST(ID_UPPER) \
	393	HW_DEV_CLEAR(ID_UPPER) \
	394	HW_DEV_ACQUISITION_START(ID_UPPER) \
	395	HW_DEV_OPEN(ID_UPPER) \
	396	SR_PRIV struct sr_dev_driver ID##_driver_info = { \
	397	.name = NAME, \
	398	.longname = LONGNAME, \
	399	.api_version = 1, \
	400	.init = init_##ID_UPPER, \
	401	.cleanup = cleanup_##ID_UPPER, \
	402	.scan = scan_##ID_UPPER, \
	403	.dev_list = dev_list_##ID_UPPER, \
	404	.dev_clear = dev_clear_##ID_UPPER, \
	405	.config_get = NULL, \
	406	.config_set = config_set, \
	407	.config_list = config_list, \
	408	.dev_open = dev_open_##ID_UPPER, \
	409	.dev_close = dev_close, \
	410	.dev_acquisition_start = dev_acquisition_start_##ID_UPPER, \
	411	.dev_acquisition_stop = dev_acquisition_stop, \
	412	.priv = NULL, \
	413	};
	414
	415	DRV(tecpel_dmm_8061, TECPEL_DMM_8061, "tecpel-dmm-8061", "Tecpel DMM-8061")
	416	DRV(uni_t_ut60a, UNI_T_UT60A, "uni-t-ut60a", "UNI-T UT60A")
	417	DRV(uni_t_ut60e, UNI_T_UT60E, "uni-t-ut60e", "UNI-T UT60E")
	418	DRV(uni_t_ut60g, UNI_T_UT60G, "uni-t-ut60g", "UNI-T UT60G")
	419	DRV(uni_t_ut61b, UNI_T_UT61B, "uni-t-ut61b", "UNI-T UT61B")
	420	DRV(uni_t_ut61c, UNI_T_UT61C, "uni-t-ut61c", "UNI-T UT61C")
	421	DRV(uni_t_ut61d, UNI_T_UT61D, "uni-t-ut61d", "UNI-T UT61D")
	422	DRV(uni_t_ut61e, UNI_T_UT61E, "uni-t-ut61e", "UNI-T UT61E")
	423	DRV(voltcraft_vc820, VOLTCRAFT_VC820, "voltcraft-vc820", "Voltcraft VC-820")
	424	DRV(voltcraft_vc830, VOLTCRAFT_VC830, "voltcraft-vc830", "Voltcraft VC-830")
	425	DRV(voltcraft_vc840, VOLTCRAFT_VC840, "voltcraft-vc840", "Voltcraft VC-840")
	426	DRV(tenma_72_7745, TENMA_72_7745, "tenma-72-7745", "Tenma 72-7745")
	427	DRV(tenma_72_7750, TENMA_72_7750, "tenma-72-7750", "Tenma 72-7750")