[libsigrok.git] / src / hardware / link-mso19 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
 * Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
 * Copyright (C) 2013 Lior Elazary <lelazary@yahoo.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 "protocol.h"

static const uint32_t devopts[] = {
	SR_CONF_OSCILLOSCOPE,
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_TRIGGER_TYPE | SR_CONF_LIST,
	SR_CONF_TRIGGER_SLOPE | SR_CONF_SET,
	SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_SET,
	SR_CONF_CAPTURE_RATIO | SR_CONF_SET,
	SR_CONF_RLE | SR_CONF_SET,
};

/*
 * Channels are numbered 0 to 7.
 *
 * See also: http://www.linkinstruments.com/images/mso19_1113.gif
 */
static const char *channel_names[] = {
	/* Note: DSO needs to be first. */
	"DSO", "0", "1", "2", "3", "4", "5", "6", "7",
};

static const uint64_t samplerates[] = {
	SR_HZ(100),
	SR_MHZ(200),
	SR_HZ(100),
};

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	int i;
	GSList *devices = NULL;
	const char *conn = NULL;
	const char *serialcomm = NULL;
	GSList *l;
	struct sr_config *src;
	struct udev *udev;
	int chtype;

	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)
		conn = SERIALCONN;
	if (!serialcomm)
		serialcomm = SERIALCOMM;

	udev = udev_new();
	if (!udev) {
		sr_err("Failed to initialize udev.");
	}

	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	udev_enumerate_scan_devices(enumerate);
	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	struct udev_list_entry *dev_list_entry;
	for (dev_list_entry = devs;
	     dev_list_entry != NULL;
	     dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
		const char *syspath = udev_list_entry_get_name(dev_list_entry);
		struct udev_device *dev =
		    udev_device_new_from_syspath(udev, syspath);
		const char *sysname = udev_device_get_sysname(dev);
		struct udev_device *parent =
		    udev_device_get_parent_with_subsystem_devtype(dev, "usb",
								  "usb_device");

		if (!parent) {
			sr_err("Unable to find parent usb device for %s",
			       sysname);
			continue;
		}

		const char *idVendor =
		    udev_device_get_sysattr_value(parent, "idVendor");
		const char *idProduct =
		    udev_device_get_sysattr_value(parent, "idProduct");
		if (strcmp(USB_VENDOR, idVendor)
		    || strcmp(USB_PRODUCT, idProduct))
			continue;

		const char *iSerial =
		    udev_device_get_sysattr_value(parent, "serial");
		const char *iProduct =
		    udev_device_get_sysattr_value(parent, "product");

		char path[32];
		snprintf(path, sizeof(path), "/dev/%s", sysname);
		conn = path;

		size_t s = strcspn(iProduct, " ");
		char product[32];
		char manufacturer[32];
		if (s > sizeof(product) ||
		    strlen(iProduct) - s > sizeof(manufacturer)) {
			sr_err("Could not parse iProduct: %s.", iProduct);
			continue;
		}
		strncpy(product, iProduct, s);
		product[s] = 0;
		strcpy(manufacturer, iProduct + s + 1);

		//Create the device context and set its params
		struct dev_context *devc;
		devc = g_malloc0(sizeof(struct dev_context));

		if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
			sr_err("Invalid iSerial: %s.", iSerial);
			g_free(devc);
			return devices;
		}

		char hwrev[32];
		sprintf(hwrev, "r%d", devc->hwrev);
		devc->ctlbase1 = 0;
		devc->protocol_trigger.spimode = 0;
		for (i = 0; i < 4; i++) {
			devc->protocol_trigger.word[i] = 0;
			devc->protocol_trigger.mask[i] = 0xff;
		}

		devc->serial = sr_serial_dev_inst_new(conn, serialcomm);

		struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
		sdi->status = SR_ST_INACTIVE;
		sdi->vendor = g_strdup(manufacturer);
		sdi->model = g_strdup(product);
		sdi->version = g_strdup(hwrev);
		sdi->priv = devc;

		for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
			chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
			sr_channel_new(sdi, i, chtype, TRUE, channel_names[i]);
		}
	}

	return std_scan_complete(di, devices);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	int ret;
	struct dev_context *devc;

	devc = sdi->priv;

	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
		return SR_ERR;

	/* FIXME: discard serial buffer */
	mso_check_trigger(devc->serial, &devc->trigger_state);
	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);

	ret = mso_reset_adc(sdi);
	if (ret != SR_OK)
		return ret;

	mso_check_trigger(devc->serial, &devc->trigger_state);
	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);

	//    ret = mso_reset_fsm(sdi);
	//    if (ret != SR_OK)
	//            return ret;
	//    return SR_ERR;

	return SR_OK;
}

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

	(void)cg;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_rate);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	int ret;
	struct dev_context *devc;
	uint64_t num_samples;
	const char *slope;
	int trigger_pos;
	double pos;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_SAMPLERATE:
		// FIXME
		return mso_configure_rate(sdi, g_variant_get_uint64(data));
		ret = SR_OK;
		break;
	case SR_CONF_LIMIT_SAMPLES:
		num_samples = g_variant_get_uint64(data);
		if (num_samples != 1024) {
			sr_err("Only 1024 samples are supported.");
			ret = SR_ERR_ARG;
		} else {
			devc->limit_samples = num_samples;
			ret = SR_OK;
		}
		break;
	case SR_CONF_CAPTURE_RATIO:
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SLOPE:
		slope = g_variant_get_string(data, NULL);

		if (!slope || !(slope[0] == 'f' || slope[0] == 'r'))
			sr_err("Invalid trigger slope");
			ret = SR_ERR_ARG;
		} else {
			devc->trigger_slope = (slope[0] == 'r')
				? SLOPE_POSITIVE : SLOPE_NEGATIVE;
			ret = SR_OK;
		}
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		pos = g_variant_get_double(data);
		if (pos < 0 || pos > 255) {
			sr_err("Trigger position (%f) should be between 0 and 255.", pos);
			ret = SR_ERR_ARG;
		} else {
			trigger_pos = (int)pos;
			devc->trigger_holdoff[0] = trigger_pos & 0xff;
			ret = SR_OK;
		}
		break;
	case SR_CONF_RLE:
		ret = SR_OK;
		break;
	default:
		ret = SR_ERR_NA;
		break;
	}

	return ret;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	GVariant *gvar;
	GVariantBuilder gvb;

	(void)cg;
	(void)sdi;

	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;
	case SR_CONF_SAMPLERATE:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
		gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
				ARRAY_SIZE(samplerates), sizeof(uint64_t));
		g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TRIGGER_TYPE:
		*data = g_variant_new_string(TRIGGER_TYPE);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	int ret = SR_ERR;

	devc = sdi->priv;

	if (mso_configure_channels(sdi) != SR_OK) {
		sr_err("Failed to configure channels.");
		return SR_ERR;
	}

	/* FIXME: No need to do full reconfigure every time */
//      ret = mso_reset_fsm(sdi);
//      if (ret != SR_OK)
//              return ret;

	/* FIXME: ACDC Mode */
	devc->ctlbase1 &= 0x7f;
//      devc->ctlbase1 |= devc->acdcmode;

	ret = mso_configure_rate(sdi, devc->cur_rate);
	if (ret != SR_OK)
		return ret;

	/* set dac offset */
	ret = mso_dac_out(sdi, devc->dac_offset);
	if (ret != SR_OK)
		return ret;

	ret = mso_configure_threshold_level(sdi);
	if (ret != SR_OK)
		return ret;

	ret = mso_configure_trigger(sdi);
	if (ret != SR_OK)
		return ret;

	/* END of config hardware part */
	ret = mso_arm(sdi);
	if (ret != SR_OK)
		return ret;

	/* Start acquisition on the device. */
	mso_check_trigger(devc->serial, &devc->trigger_state);
	ret = mso_check_trigger(devc->serial, NULL);
	if (ret != SR_OK)
		return ret;

	/* Reset trigger state. */
	devc->trigger_state = 0x00;

	std_session_send_df_header(sdi);

	/* Our first channel is analog, the other 8 are of type 'logic'. */
	/* TODO. */

	serial_source_add(sdi->session, devc->serial, G_IO_IN, -1,
			mso_receive_data, sdi);

	return SR_OK;
}

/* This stops acquisition on ALL devices, ignoring dev_index. */
static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	stop_acquisition(sdi);

	return SR_OK;
}

static struct sr_dev_driver link_mso19_driver_info = {
	.name = "link-mso19",
	.longname = "Link Instruments MSO-19",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = std_serial_dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(link_mso19_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2011 Daniel Ribeiro <drwyrm@gmail.com>
	5	* Copyright (C) 2012 Renato Caldas <rmsc@fe.up.pt>
	6	* Copyright (C) 2013 Lior Elazary <lelazary@yahoo.com>
	7	*
	8	* This program is free software: you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License as published by
	10	* the Free Software Foundation, either version 3 of the License, or
	11	* (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	20	*/
	21
	22	#include <config.h>
	23	#include "protocol.h"
	24
	25	static const uint32_t devopts[] = {
	26	SR_CONF_OSCILLOSCOPE,
	27	SR_CONF_LOGIC_ANALYZER,
	28	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
	29	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	30	SR_CONF_TRIGGER_TYPE \| SR_CONF_LIST,
	31	SR_CONF_TRIGGER_SLOPE \| SR_CONF_SET,
	32	SR_CONF_HORIZ_TRIGGERPOS \| SR_CONF_SET,
	33	SR_CONF_CAPTURE_RATIO \| SR_CONF_SET,
	34	SR_CONF_RLE \| SR_CONF_SET,
	35	};
	36
	37	/*
	38	* Channels are numbered 0 to 7.
	39	*
	40	* See also: http://www.linkinstruments.com/images/mso19_1113.gif
	41	*/
	42	static const char *channel_names[] = {
	43	/* Note: DSO needs to be first. */
	44	"DSO", "0", "1", "2", "3", "4", "5", "6", "7",
	45	};
	46
	47	static const uint64_t samplerates[] = {
	48	SR_HZ(100),
	49	SR_MHZ(200),
	50	SR_HZ(100),
	51	};
	52
	53	static GSList scan(struct sr_dev_driver di, GSList *options)
	54	{
	55	int i;
	56	GSList *devices = NULL;
	57	const char *conn = NULL;
	58	const char *serialcomm = NULL;
	59	GSList *l;
	60	struct sr_config *src;
	61	struct udev *udev;
	62	int chtype;
	63
	64	for (l = options; l; l = l->next) {
	65	src = l->data;
	66	switch (src->key) {
	67	case SR_CONF_CONN:
	68	conn = g_variant_get_string(src->data, NULL);
	69	break;
	70	case SR_CONF_SERIALCOMM:
	71	serialcomm = g_variant_get_string(src->data, NULL);
	72	break;
	73	}
	74	}
	75	if (!conn)
	76	conn = SERIALCONN;
	77	if (!serialcomm)
	78	serialcomm = SERIALCOMM;
	79
	80	udev = udev_new();
	81	if (!udev) {
	82	sr_err("Failed to initialize udev.");
	83	}
	84
	85	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	86	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	87	udev_enumerate_scan_devices(enumerate);
	88	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	89	struct udev_list_entry *dev_list_entry;
	90	for (dev_list_entry = devs;
	91	dev_list_entry != NULL;
	92	dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
	93	const char *syspath = udev_list_entry_get_name(dev_list_entry);
	94	struct udev_device *dev =
	95	udev_device_new_from_syspath(udev, syspath);
	96	const char *sysname = udev_device_get_sysname(dev);
	97	struct udev_device *parent =
	98	udev_device_get_parent_with_subsystem_devtype(dev, "usb",
	99	"usb_device");
	100
	101	if (!parent) {
	102	sr_err("Unable to find parent usb device for %s",
	103	sysname);
	104	continue;
	105	}
	106
	107	const char *idVendor =
	108	udev_device_get_sysattr_value(parent, "idVendor");
	109	const char *idProduct =
	110	udev_device_get_sysattr_value(parent, "idProduct");
	111	if (strcmp(USB_VENDOR, idVendor)
	112	\|\| strcmp(USB_PRODUCT, idProduct))
	113	continue;
	114
	115	const char *iSerial =
	116	udev_device_get_sysattr_value(parent, "serial");
	117	const char *iProduct =
	118	udev_device_get_sysattr_value(parent, "product");
	119
	120	char path[32];
	121	snprintf(path, sizeof(path), "/dev/%s", sysname);
	122	conn = path;
	123
	124	size_t s = strcspn(iProduct, " ");
	125	char product[32];
	126	char manufacturer[32];
	127	if (s > sizeof(product) \|\|
	128	strlen(iProduct) - s > sizeof(manufacturer)) {
	129	sr_err("Could not parse iProduct: %s.", iProduct);
	130	continue;
	131	}
	132	strncpy(product, iProduct, s);
	133	product[s] = 0;
	134	strcpy(manufacturer, iProduct + s + 1);
	135
	136	//Create the device context and set its params
	137	struct dev_context *devc;
	138	devc = g_malloc0(sizeof(struct dev_context));
	139
	140	if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
	141	sr_err("Invalid iSerial: %s.", iSerial);
	142	g_free(devc);
	143	return devices;
	144	}
	145
	146	char hwrev[32];
	147	sprintf(hwrev, "r%d", devc->hwrev);
	148	devc->ctlbase1 = 0;
	149	devc->protocol_trigger.spimode = 0;
	150	for (i = 0; i < 4; i++) {
	151	devc->protocol_trigger.word[i] = 0;
	152	devc->protocol_trigger.mask[i] = 0xff;
	153	}
	154
	155	devc->serial = sr_serial_dev_inst_new(conn, serialcomm);
	156
	157	struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
	158	sdi->status = SR_ST_INACTIVE;
	159	sdi->vendor = g_strdup(manufacturer);
	160	sdi->model = g_strdup(product);
	161	sdi->version = g_strdup(hwrev);
	162	sdi->priv = devc;
	163
	164	for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
	165	chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
	166	sr_channel_new(sdi, i, chtype, TRUE, channel_names[i]);
	167	}
	168	}
	169
	170	return std_scan_complete(di, devices);
	171	}
	172
	173	static int dev_open(struct sr_dev_inst *sdi)
	174	{
	175	int ret;
	176	struct dev_context *devc;
	177
	178	devc = sdi->priv;
	179
	180	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	181	return SR_ERR;
	182
	183	/* FIXME: discard serial buffer */
	184	mso_check_trigger(devc->serial, &devc->trigger_state);
	185	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	186
	187	ret = mso_reset_adc(sdi);
	188	if (ret != SR_OK)
	189	return ret;
	190
	191	mso_check_trigger(devc->serial, &devc->trigger_state);
	192	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	193
	194	// ret = mso_reset_fsm(sdi);
	195	// if (ret != SR_OK)
	196	// return ret;
	197	// return SR_ERR;
	198
	199	return SR_OK;
	200	}
	201
	202	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
	203	const struct sr_channel_group *cg)
	204	{
	205	struct dev_context *devc;
	206
	207	(void)cg;
	208
	209	if (!sdi)
	210	return SR_ERR_ARG;
	211
	212	devc = sdi->priv;
	213
	214	switch (key) {
	215	case SR_CONF_SAMPLERATE:
	216	*data = g_variant_new_uint64(devc->cur_rate);
	217	break;
	218	default:
	219	return SR_ERR_NA;
	220	}
	221
	222	return SR_OK;
	223	}
	224
	225	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
	226	const struct sr_channel_group *cg)
	227	{
	228	int ret;
	229	struct dev_context *devc;
	230	uint64_t num_samples;
	231	const char *slope;
	232	int trigger_pos;
	233	double pos;
	234
	235	(void)cg;
	236
	237	devc = sdi->priv;
	238
	239	switch (key) {
	240	case SR_CONF_SAMPLERATE:
	241	// FIXME
	242	return mso_configure_rate(sdi, g_variant_get_uint64(data));
	243	ret = SR_OK;
	244	break;
	245	case SR_CONF_LIMIT_SAMPLES:
	246	num_samples = g_variant_get_uint64(data);
	247	if (num_samples != 1024) {
	248	sr_err("Only 1024 samples are supported.");
	249	ret = SR_ERR_ARG;
	250	} else {
	251	devc->limit_samples = num_samples;
	252	ret = SR_OK;
	253	}
	254	break;
	255	case SR_CONF_CAPTURE_RATIO:
	256	ret = SR_OK;
	257	break;
	258	case SR_CONF_TRIGGER_SLOPE:
	259	slope = g_variant_get_string(data, NULL);
	260
	261	if (!slope \|\| !(slope[0] == 'f' \|\| slope[0] == 'r'))
	262	sr_err("Invalid trigger slope");
	263	ret = SR_ERR_ARG;
	264	} else {
	265	devc->trigger_slope = (slope[0] == 'r')
	266	? SLOPE_POSITIVE : SLOPE_NEGATIVE;
	267	ret = SR_OK;
	268	}
	269	break;
	270	case SR_CONF_HORIZ_TRIGGERPOS:
	271	pos = g_variant_get_double(data);
	272	if (pos < 0 \|\| pos > 255) {
	273	sr_err("Trigger position (%f) should be between 0 and 255.", pos);
	274	ret = SR_ERR_ARG;
	275	} else {
	276	trigger_pos = (int)pos;
	277	devc->trigger_holdoff[0] = trigger_pos & 0xff;
	278	ret = SR_OK;
	279	}
	280	break;
	281	case SR_CONF_RLE:
	282	ret = SR_OK;
	283	break;
	284	default:
	285	ret = SR_ERR_NA;
	286	break;
	287	}
	288
	289	return ret;
	290	}
	291
	292	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
	293	const struct sr_channel_group *cg)
	294	{
	295	GVariant *gvar;
	296	GVariantBuilder gvb;
	297
	298	(void)cg;
	299	(void)sdi;
	300
	301	switch (key) {
	302	case SR_CONF_DEVICE_OPTIONS:
	303	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	304	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	305	break;
	306	case SR_CONF_SAMPLERATE:
	307	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	308	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
	309	ARRAY_SIZE(samplerates), sizeof(uint64_t));
	310	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	311	*data = g_variant_builder_end(&gvb);
	312	break;
	313	case SR_CONF_TRIGGER_TYPE:
	314	*data = g_variant_new_string(TRIGGER_TYPE);
	315	break;
	316	default:
	317	return SR_ERR_NA;
	318	}
	319
	320	return SR_OK;
	321	}
	322
	323	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	324	{
	325	struct dev_context *devc;
	326	int ret = SR_ERR;
	327
	328	devc = sdi->priv;
	329
	330	if (mso_configure_channels(sdi) != SR_OK) {
	331	sr_err("Failed to configure channels.");
	332	return SR_ERR;
	333	}
	334
	335	/* FIXME: No need to do full reconfigure every time */
	336	// ret = mso_reset_fsm(sdi);
	337	// if (ret != SR_OK)
	338	// return ret;
	339
	340	/* FIXME: ACDC Mode */
	341	devc->ctlbase1 &= 0x7f;
	342	// devc->ctlbase1 \|= devc->acdcmode;
	343
	344	ret = mso_configure_rate(sdi, devc->cur_rate);
	345	if (ret != SR_OK)
	346	return ret;
	347
	348	/* set dac offset */
	349	ret = mso_dac_out(sdi, devc->dac_offset);
	350	if (ret != SR_OK)
	351	return ret;
	352
	353	ret = mso_configure_threshold_level(sdi);
	354	if (ret != SR_OK)
	355	return ret;
	356
	357	ret = mso_configure_trigger(sdi);
	358	if (ret != SR_OK)
	359	return ret;
	360
	361	/* END of config hardware part */
	362	ret = mso_arm(sdi);
	363	if (ret != SR_OK)
	364	return ret;
	365
	366	/* Start acquisition on the device. */
	367	mso_check_trigger(devc->serial, &devc->trigger_state);
	368	ret = mso_check_trigger(devc->serial, NULL);
	369	if (ret != SR_OK)
	370	return ret;
	371
	372	/* Reset trigger state. */
	373	devc->trigger_state = 0x00;
	374
	375	std_session_send_df_header(sdi);
	376
	377	/* Our first channel is analog, the other 8 are of type 'logic'. */
	378	/* TODO. */
	379
	380	serial_source_add(sdi->session, devc->serial, G_IO_IN, -1,
	381	mso_receive_data, sdi);
	382
	383	return SR_OK;
	384	}
	385
	386	/* This stops acquisition on ALL devices, ignoring dev_index. */
	387	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	388	{
	389	stop_acquisition(sdi);
	390
	391	return SR_OK;
	392	}
	393
	394	static struct sr_dev_driver link_mso19_driver_info = {
	395	.name = "link-mso19",
	396	.longname = "Link Instruments MSO-19",
	397	.api_version = 1,
	398	.init = std_init,
	399	.cleanup = std_cleanup,
	400	.scan = scan,
	401	.dev_list = std_dev_list,
	402	.config_get = config_get,
	403	.config_set = config_set,
	404	.config_list = config_list,
	405	.dev_open = dev_open,
	406	.dev_close = std_serial_dev_close,
	407	.dev_acquisition_start = dev_acquisition_start,
	408	.dev_acquisition_stop = dev_acquisition_stop,
	409	.context = NULL,
	410	};
	411	SR_REGISTER_DEV_DRIVER(link_mso19_driver_info);