[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 drvopts[] = {
	SR_CONF_OSCILLOSCOPE,
	SR_CONF_LOGIC_ANALYZER,
};

static const uint32_t devopts[] = {
	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;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_SAMPLERATE:
		// FIXME
		return mso_configure_rate(sdi, g_variant_get_uint64(data));
	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;
			break;
		};
		devc->limit_samples = num_samples;
		break;
	case SR_CONF_CAPTURE_RATIO:
		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;
			break;
		}
		devc->trigger_slope = (slope[0] == 'r')
			? SLOPE_POSITIVE : SLOPE_NEGATIVE;
		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;
			break;
		}
		trigger_pos = (int)pos;
		devc->trigger_holdoff[0] = trigger_pos & 0xff;
		break;
	case SR_CONF_RLE:
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(int key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	case SR_CONF_SAMPLERATE:
		*data = std_gvar_samplerates_steps(samplerates, ARRAY_SIZE(samplerates));
		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;
}

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,
	.dev_clear = std_dev_clear,
	.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 drvopts[] = {
	26	SR_CONF_OSCILLOSCOPE,
	27	SR_CONF_LOGIC_ANALYZER,
	28	};
	29
	30	static const uint32_t devopts[] = {
	31	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
	32	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	33	SR_CONF_TRIGGER_TYPE \| SR_CONF_LIST,
	34	SR_CONF_TRIGGER_SLOPE \| SR_CONF_SET,
	35	SR_CONF_HORIZ_TRIGGERPOS \| SR_CONF_SET,
	36	SR_CONF_CAPTURE_RATIO \| SR_CONF_SET,
	37	SR_CONF_RLE \| SR_CONF_SET,
	38	};
	39
	40	/*
	41	* Channels are numbered 0 to 7.
	42	*
	43	* See also: http://www.linkinstruments.com/images/mso19_1113.gif
	44	*/
	45	static const char *channel_names[] = {
	46	/* Note: DSO needs to be first. */
	47	"DSO", "0", "1", "2", "3", "4", "5", "6", "7",
	48	};
	49
	50	static const uint64_t samplerates[] = {
	51	SR_HZ(100),
	52	SR_MHZ(200),
	53	SR_HZ(100),
	54	};
	55
	56	static GSList scan(struct sr_dev_driver di, GSList *options)
	57	{
	58	int i;
	59	GSList *devices = NULL;
	60	const char *conn = NULL;
	61	const char *serialcomm = NULL;
	62	GSList *l;
	63	struct sr_config *src;
	64	struct udev *udev;
	65	int chtype;
	66
	67	for (l = options; l; l = l->next) {
	68	src = l->data;
	69	switch (src->key) {
	70	case SR_CONF_CONN:
	71	conn = g_variant_get_string(src->data, NULL);
	72	break;
	73	case SR_CONF_SERIALCOMM:
	74	serialcomm = g_variant_get_string(src->data, NULL);
	75	break;
	76	}
	77	}
	78	if (!conn)
	79	conn = SERIALCONN;
	80	if (!serialcomm)
	81	serialcomm = SERIALCOMM;
	82
	83	udev = udev_new();
	84	if (!udev) {
	85	sr_err("Failed to initialize udev.");
	86	}
	87
	88	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	89	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	90	udev_enumerate_scan_devices(enumerate);
	91	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	92	struct udev_list_entry *dev_list_entry;
	93	for (dev_list_entry = devs;
	94	dev_list_entry != NULL;
	95	dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
	96	const char *syspath = udev_list_entry_get_name(dev_list_entry);
	97	struct udev_device *dev =
	98	udev_device_new_from_syspath(udev, syspath);
	99	const char *sysname = udev_device_get_sysname(dev);
	100	struct udev_device *parent =
	101	udev_device_get_parent_with_subsystem_devtype(dev, "usb",
	102	"usb_device");
	103
	104	if (!parent) {
	105	sr_err("Unable to find parent usb device for %s",
	106	sysname);
	107	continue;
	108	}
	109
	110	const char *idVendor =
	111	udev_device_get_sysattr_value(parent, "idVendor");
	112	const char *idProduct =
	113	udev_device_get_sysattr_value(parent, "idProduct");
	114	if (strcmp(USB_VENDOR, idVendor)
	115	\|\| strcmp(USB_PRODUCT, idProduct))
	116	continue;
	117
	118	const char *iSerial =
	119	udev_device_get_sysattr_value(parent, "serial");
	120	const char *iProduct =
	121	udev_device_get_sysattr_value(parent, "product");
	122
	123	char path[32];
	124	snprintf(path, sizeof(path), "/dev/%s", sysname);
	125	conn = path;
	126
	127	size_t s = strcspn(iProduct, " ");
	128	char product[32];
	129	char manufacturer[32];
	130	if (s > sizeof(product) \|\|
	131	strlen(iProduct) - s > sizeof(manufacturer)) {
	132	sr_err("Could not parse iProduct: %s.", iProduct);
	133	continue;
	134	}
	135	strncpy(product, iProduct, s);
	136	product[s] = 0;
	137	strcpy(manufacturer, iProduct + s + 1);
	138
	139	//Create the device context and set its params
	140	struct dev_context *devc;
	141	devc = g_malloc0(sizeof(struct dev_context));
	142
	143	if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
	144	sr_err("Invalid iSerial: %s.", iSerial);
	145	g_free(devc);
	146	return devices;
	147	}
	148
	149	char hwrev[32];
	150	sprintf(hwrev, "r%d", devc->hwrev);
	151	devc->ctlbase1 = 0;
	152	devc->protocol_trigger.spimode = 0;
	153	for (i = 0; i < 4; i++) {
	154	devc->protocol_trigger.word[i] = 0;
	155	devc->protocol_trigger.mask[i] = 0xff;
	156	}
	157
	158	devc->serial = sr_serial_dev_inst_new(conn, serialcomm);
	159
	160	struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
	161	sdi->status = SR_ST_INACTIVE;
	162	sdi->vendor = g_strdup(manufacturer);
	163	sdi->model = g_strdup(product);
	164	sdi->version = g_strdup(hwrev);
	165	sdi->priv = devc;
	166
	167	for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
	168	chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
	169	sr_channel_new(sdi, i, chtype, TRUE, channel_names[i]);
	170	}
	171	}
	172
	173	return std_scan_complete(di, devices);
	174	}
	175
	176	static int dev_open(struct sr_dev_inst *sdi)
	177	{
	178	int ret;
	179	struct dev_context *devc;
	180
	181	devc = sdi->priv;
	182
	183	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	184	return SR_ERR;
	185
	186	/* FIXME: discard serial buffer */
	187	mso_check_trigger(devc->serial, &devc->trigger_state);
	188	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	189
	190	ret = mso_reset_adc(sdi);
	191	if (ret != SR_OK)
	192	return ret;
	193
	194	mso_check_trigger(devc->serial, &devc->trigger_state);
	195	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	196
	197	// ret = mso_reset_fsm(sdi);
	198	// if (ret != SR_OK)
	199	// return ret;
	200	// return SR_ERR;
	201
	202	return SR_OK;
	203	}
	204
	205	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
	206	const struct sr_channel_group *cg)
	207	{
	208	struct dev_context *devc;
	209
	210	(void)cg;
	211
	212	if (!sdi)
	213	return SR_ERR_ARG;
	214
	215	devc = sdi->priv;
	216
	217	switch (key) {
	218	case SR_CONF_SAMPLERATE:
	219	*data = g_variant_new_uint64(devc->cur_rate);
	220	break;
	221	default:
	222	return SR_ERR_NA;
	223	}
	224
	225	return SR_OK;
	226	}
	227
	228	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
	229	const struct sr_channel_group *cg)
	230	{
	231	int ret;
	232	struct dev_context *devc;
	233	uint64_t num_samples;
	234	const char *slope;
	235	int trigger_pos;
	236	double pos;
	237
	238	(void)cg;
	239
	240	devc = sdi->priv;
	241
	242	ret = SR_OK;
	243	switch (key) {
	244	case SR_CONF_SAMPLERATE:
	245	// FIXME
	246	return mso_configure_rate(sdi, g_variant_get_uint64(data));
	247	case SR_CONF_LIMIT_SAMPLES:
	248	num_samples = g_variant_get_uint64(data);
	249	if (num_samples != 1024) {
	250	sr_err("Only 1024 samples are supported.");
	251	ret = SR_ERR_ARG;
	252	break;
	253	};
	254	devc->limit_samples = num_samples;
	255	break;
	256	case SR_CONF_CAPTURE_RATIO:
	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	break;
	265	}
	266	devc->trigger_slope = (slope[0] == 'r')
	267	? SLOPE_POSITIVE : SLOPE_NEGATIVE;
	268	break;
	269	case SR_CONF_HORIZ_TRIGGERPOS:
	270	pos = g_variant_get_double(data);
	271	if (pos < 0 \|\| pos > 255) {
	272	sr_err("Trigger position (%f) should be between 0 and 255.", pos);
	273	ret = SR_ERR_ARG;
	274	break;
	275	}
	276	trigger_pos = (int)pos;
	277	devc->trigger_holdoff[0] = trigger_pos & 0xff;
	278	break;
	279	case SR_CONF_RLE:
	280	break;
	281	default:
	282	ret = SR_ERR_NA;
	283	}
	284
	285	return ret;
	286	}
	287
	288	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
	289	const struct sr_channel_group *cg)
	290	{
	291	switch (key) {
	292	case SR_CONF_DEVICE_OPTIONS:
	293	return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	294	case SR_CONF_SAMPLERATE:
	295	*data = std_gvar_samplerates_steps(samplerates, ARRAY_SIZE(samplerates));
	296	break;
	297	case SR_CONF_TRIGGER_TYPE:
	298	*data = g_variant_new_string(TRIGGER_TYPE);
	299	break;
	300	default:
	301	return SR_ERR_NA;
	302	}
	303
	304	return SR_OK;
	305	}
	306
	307	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	308	{
	309	struct dev_context *devc;
	310	int ret = SR_ERR;
	311
	312	devc = sdi->priv;
	313
	314	if (mso_configure_channels(sdi) != SR_OK) {
	315	sr_err("Failed to configure channels.");
	316	return SR_ERR;
	317	}
	318
	319	/* FIXME: No need to do full reconfigure every time */
	320	// ret = mso_reset_fsm(sdi);
	321	// if (ret != SR_OK)
	322	// return ret;
	323
	324	/* FIXME: ACDC Mode */
	325	devc->ctlbase1 &= 0x7f;
	326	// devc->ctlbase1 \|= devc->acdcmode;
	327
	328	ret = mso_configure_rate(sdi, devc->cur_rate);
	329	if (ret != SR_OK)
	330	return ret;
	331
	332	/* set dac offset */
	333	ret = mso_dac_out(sdi, devc->dac_offset);
	334	if (ret != SR_OK)
	335	return ret;
	336
	337	ret = mso_configure_threshold_level(sdi);
	338	if (ret != SR_OK)
	339	return ret;
	340
	341	ret = mso_configure_trigger(sdi);
	342	if (ret != SR_OK)
	343	return ret;
	344
	345	/* END of config hardware part */
	346	ret = mso_arm(sdi);
	347	if (ret != SR_OK)
	348	return ret;
	349
	350	/* Start acquisition on the device. */
	351	mso_check_trigger(devc->serial, &devc->trigger_state);
	352	ret = mso_check_trigger(devc->serial, NULL);
	353	if (ret != SR_OK)
	354	return ret;
	355
	356	/* Reset trigger state. */
	357	devc->trigger_state = 0x00;
	358
	359	std_session_send_df_header(sdi);
	360
	361	/* Our first channel is analog, the other 8 are of type 'logic'. */
	362	/* TODO. */
	363
	364	serial_source_add(sdi->session, devc->serial, G_IO_IN, -1,
	365	mso_receive_data, sdi);
	366
	367	return SR_OK;
	368	}
	369
	370	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	371	{
	372	stop_acquisition(sdi);
	373
	374	return SR_OK;
	375	}
	376
	377	static struct sr_dev_driver link_mso19_driver_info = {
	378	.name = "link-mso19",
	379	.longname = "Link Instruments MSO-19",
	380	.api_version = 1,
	381	.init = std_init,
	382	.cleanup = std_cleanup,
	383	.scan = scan,
	384	.dev_list = std_dev_list,
	385	.dev_clear = std_dev_clear,
	386	.config_get = config_get,
	387	.config_set = config_set,
	388	.config_list = config_list,
	389	.dev_open = dev_open,
	390	.dev_close = std_serial_dev_close,
	391	.dev_acquisition_start = dev_acquisition_start,
	392	.dev_acquisition_stop = dev_acquisition_stop,
	393	.context = NULL,
	394	};
	395	SR_REGISTER_DEV_DRIVER(link_mso19_driver_info);