[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 "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
 */
SR_PRIV const char *mso19_channel_names[NUM_CHANNELS + 1] = {
	/* Note: DSO needs to be first. */
	"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
};

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

SR_PRIV struct sr_dev_driver link_mso19_driver_info;
static struct sr_dev_driver *di = &link_mso19_driver_info;

/* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */
static int dev_clear(void)
{
	GSList *l;
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	int ret = SR_OK;

	if (!(drvc = di->priv))
		return SR_OK;

	/* Properly close and free all devices. */
	for (l = drvc->instances; l; l = l->next) {
		if (!(sdi = l->data)) {
			/* Log error, but continue cleaning up the rest. */
			sr_err("%s: sdi was NULL, continuing", __func__);
			ret = SR_ERR_BUG;
			continue;
		}
		if (!(devc = sdi->priv)) {
			/* Log error, but continue cleaning up the rest. */
			sr_err("%s: sdi->priv was NULL, continuing", __func__);
			ret = SR_ERR_BUG;
			continue;
		}
		std_serial_dev_close(sdi);
		sr_serial_dev_inst_free(devc->serial);
		sr_dev_inst_free(sdi);
	}
	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	return ret;
}

static int init(struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

static GSList *scan(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 == NULL)
		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);

		if (!sdi) {
			sr_err("Unable to create device instance for %s",
			       sysname);
			sr_dev_inst_free(sdi);
			g_free(devc);
			return devices;
		}

		sdi->driver = di;
		sdi->priv = devc;

		for (i = 0; i < NUM_CHANNELS; i++) {
			chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
			sr_channel_new(sdi, i, chtype, TRUE,
					    mso19_channel_names[i]);
		}

		//Add the driver
		struct drv_context *drvc = di->priv;
		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);
	}

	return devices;
}

static GSList *dev_list(void)
{
	return ((struct drv_context *)(di->priv))->instances;
}

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;

	sdi->status = SR_ST_ACTIVE;

	/* 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 cleanup(void)
{
	return dev_clear();
}

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

	(void)cg;

	switch (id) {
	case SR_CONF_SAMPLERATE:
		if (sdi) {
			devc = sdi->priv;
			*data = g_variant_new_uint64(devc->cur_rate);
		} else
			return SR_ERR;
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(int id, 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;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	switch (id) {
	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;
			sr_dbg("setting limit_samples to %i\n",
			       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, void *cb_data)
{
	struct dev_context *devc;
	int ret = SR_ERR;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	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;

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

	/* 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, cb_data);

	return SR_OK;
}

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

	stop_acquisition(sdi);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
	.name = "link-mso19",
	.longname = "Link Instruments MSO-19",
	.api_version = 1,
	.init = init,
	.cleanup = cleanup,
	.scan = scan,
	.dev_list = dev_list,
	.dev_clear = 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,
	.priv = NULL,
};
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 "protocol.h"
	23
	24	static const uint32_t devopts[] = {
	25	SR_CONF_OSCILLOSCOPE,
	26	SR_CONF_LOGIC_ANALYZER,
	27	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
	28	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	29	SR_CONF_TRIGGER_TYPE \| SR_CONF_LIST,
	30	SR_CONF_TRIGGER_SLOPE \| SR_CONF_SET,
	31	SR_CONF_HORIZ_TRIGGERPOS \| SR_CONF_SET,
	32	SR_CONF_CAPTURE_RATIO \| SR_CONF_SET,
	33	SR_CONF_RLE \| SR_CONF_SET,
	34	};
	35
	36	/*
	37	* Channels are numbered 0 to 7.
	38	*
	39	* See also: http://www.linkinstruments.com/images/mso19_1113.gif
	40	*/
	41	SR_PRIV const char *mso19_channel_names[NUM_CHANNELS + 1] = {
	42	/* Note: DSO needs to be first. */
	43	"DSO", "0", "1", "2", "3", "4", "5", "6", "7", NULL,
	44	};
	45
	46	static const uint64_t samplerates[] = {
	47	SR_HZ(100),
	48	SR_MHZ(200),
	49	SR_HZ(100),
	50	};
	51
	52	SR_PRIV struct sr_dev_driver link_mso19_driver_info;
	53	static struct sr_dev_driver *di = &link_mso19_driver_info;
	54
	55	/* TODO: Use sr_dev_inst to store connection handle & use std_dev_clear(). */
	56	static int dev_clear(void)
	57	{
	58	GSList *l;
	59	struct sr_dev_inst *sdi;
	60	struct drv_context *drvc;
	61	struct dev_context *devc;
	62	int ret = SR_OK;
	63
	64	if (!(drvc = di->priv))
	65	return SR_OK;
	66
	67	/* Properly close and free all devices. */
	68	for (l = drvc->instances; l; l = l->next) {
	69	if (!(sdi = l->data)) {
	70	/* Log error, but continue cleaning up the rest. */
	71	sr_err("%s: sdi was NULL, continuing", __func__);
	72	ret = SR_ERR_BUG;
	73	continue;
	74	}
	75	if (!(devc = sdi->priv)) {
	76	/* Log error, but continue cleaning up the rest. */
	77	sr_err("%s: sdi->priv was NULL, continuing", __func__);
	78	ret = SR_ERR_BUG;
	79	continue;
	80	}
	81	std_serial_dev_close(sdi);
	82	sr_serial_dev_inst_free(devc->serial);
	83	sr_dev_inst_free(sdi);
	84	}
	85	g_slist_free(drvc->instances);
	86	drvc->instances = NULL;
	87
	88	return ret;
	89	}
	90
	91	static int init(struct sr_context *sr_ctx)
	92	{
	93	return std_init(sr_ctx, di, LOG_PREFIX);
	94	}
	95
	96	static GSList scan(GSList options)
	97	{
	98	int i;
	99	GSList *devices = NULL;
	100	const char *conn = NULL;
	101	const char *serialcomm = NULL;
	102	GSList *l;
	103	struct sr_config *src;
	104	struct udev *udev;
	105	int chtype;
	106
	107	for (l = options; l; l = l->next) {
	108	src = l->data;
	109	switch (src->key) {
	110	case SR_CONF_CONN:
	111	conn = g_variant_get_string(src->data, NULL);
	112	break;
	113	case SR_CONF_SERIALCOMM:
	114	serialcomm = g_variant_get_string(src->data, NULL);
	115	break;
	116	}
	117	}
	118	if (!conn)
	119	conn = SERIALCONN;
	120	if (serialcomm == NULL)
	121	serialcomm = SERIALCOMM;
	122
	123	udev = udev_new();
	124	if (!udev) {
	125	sr_err("Failed to initialize udev.");
	126	}
	127
	128	struct udev_enumerate *enumerate = udev_enumerate_new(udev);
	129	udev_enumerate_add_match_subsystem(enumerate, "usb-serial");
	130	udev_enumerate_scan_devices(enumerate);
	131	struct udev_list_entry *devs = udev_enumerate_get_list_entry(enumerate);
	132	struct udev_list_entry *dev_list_entry;
	133	for (dev_list_entry = devs;
	134	dev_list_entry != NULL;
	135	dev_list_entry = udev_list_entry_get_next(dev_list_entry)) {
	136	const char *syspath = udev_list_entry_get_name(dev_list_entry);
	137	struct udev_device *dev =
	138	udev_device_new_from_syspath(udev, syspath);
	139	const char *sysname = udev_device_get_sysname(dev);
	140	struct udev_device *parent =
	141	udev_device_get_parent_with_subsystem_devtype(dev, "usb",
	142	"usb_device");
	143
	144	if (!parent) {
	145	sr_err("Unable to find parent usb device for %s",
	146	sysname);
	147	continue;
	148	}
	149
	150	const char *idVendor =
	151	udev_device_get_sysattr_value(parent, "idVendor");
	152	const char *idProduct =
	153	udev_device_get_sysattr_value(parent, "idProduct");
	154	if (strcmp(USB_VENDOR, idVendor)
	155	\|\| strcmp(USB_PRODUCT, idProduct))
	156	continue;
	157
	158	const char *iSerial =
	159	udev_device_get_sysattr_value(parent, "serial");
	160	const char *iProduct =
	161	udev_device_get_sysattr_value(parent, "product");
	162
	163	char path[32];
	164	snprintf(path, sizeof(path), "/dev/%s", sysname);
	165	conn = path;
	166
	167	size_t s = strcspn(iProduct, " ");
	168	char product[32];
	169	char manufacturer[32];
	170	if (s > sizeof(product) \|\|
	171	strlen(iProduct) - s > sizeof(manufacturer)) {
	172	sr_err("Could not parse iProduct: %s.", iProduct);
	173	continue;
	174	}
	175	strncpy(product, iProduct, s);
	176	product[s] = 0;
	177	strcpy(manufacturer, iProduct + s + 1);
	178
	179	//Create the device context and set its params
	180	struct dev_context *devc;
	181	devc = g_malloc0(sizeof(struct dev_context));
	182
	183	if (mso_parse_serial(iSerial, iProduct, devc) != SR_OK) {
	184	sr_err("Invalid iSerial: %s.", iSerial);
	185	g_free(devc);
	186	return devices;
	187	}
	188
	189	char hwrev[32];
	190	sprintf(hwrev, "r%d", devc->hwrev);
	191	devc->ctlbase1 = 0;
	192	devc->protocol_trigger.spimode = 0;
	193	for (i = 0; i < 4; i++) {
	194	devc->protocol_trigger.word[i] = 0;
	195	devc->protocol_trigger.mask[i] = 0xff;
	196	}
	197
	198	devc->serial = sr_serial_dev_inst_new(conn, serialcomm);
	199
	200	struct sr_dev_inst *sdi = g_malloc0(sizeof(struct sr_dev_inst));
	201	sdi->status = SR_ST_INACTIVE;
	202	sdi->vendor = g_strdup(manufacturer);
	203	sdi->model = g_strdup(product);
	204	sdi->version = g_strdup(hwrev);
	205
	206	if (!sdi) {
	207	sr_err("Unable to create device instance for %s",
	208	sysname);
	209	sr_dev_inst_free(sdi);
	210	g_free(devc);
	211	return devices;
	212	}
	213
	214	sdi->driver = di;
	215	sdi->priv = devc;
	216
	217	for (i = 0; i < NUM_CHANNELS; i++) {
	218	chtype = (i == 0) ? SR_CHANNEL_ANALOG : SR_CHANNEL_LOGIC;
	219	sr_channel_new(sdi, i, chtype, TRUE,
	220	mso19_channel_names[i]);
	221	}
	222
	223	//Add the driver
	224	struct drv_context *drvc = di->priv;
	225	drvc->instances = g_slist_append(drvc->instances, sdi);
	226	devices = g_slist_append(devices, sdi);
	227	}
	228
	229	return devices;
	230	}
	231
	232	static GSList *dev_list(void)
	233	{
	234	return ((struct drv_context *)(di->priv))->instances;
	235	}
	236
	237	static int dev_open(struct sr_dev_inst *sdi)
	238	{
	239	int ret;
	240	struct dev_context *devc;
	241
	242	devc = sdi->priv;
	243
	244	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	245	return SR_ERR;
	246
	247	sdi->status = SR_ST_ACTIVE;
	248
	249	/* FIXME: discard serial buffer */
	250	mso_check_trigger(devc->serial, &devc->trigger_state);
	251	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	252
	253	ret = mso_reset_adc(sdi);
	254	if (ret != SR_OK)
	255	return ret;
	256
	257	mso_check_trigger(devc->serial, &devc->trigger_state);
	258	sr_dbg("Trigger state: 0x%x.", devc->trigger_state);
	259
	260	// ret = mso_reset_fsm(sdi);
	261	// if (ret != SR_OK)
	262	// return ret;
	263	// return SR_ERR;
	264
	265	return SR_OK;
	266	}
	267
	268	static int cleanup(void)
	269	{
	270	return dev_clear();
	271	}
	272
	273	static int config_get(int id, GVariant *data, const struct sr_dev_inst sdi,
	274	const struct sr_channel_group *cg)
	275	{
	276	struct dev_context *devc;
	277
	278	(void)cg;
	279
	280	switch (id) {
	281	case SR_CONF_SAMPLERATE:
	282	if (sdi) {
	283	devc = sdi->priv;
	284	*data = g_variant_new_uint64(devc->cur_rate);
	285	} else
	286	return SR_ERR;
	287	break;
	288	default:
	289	return SR_ERR_NA;
	290	}
	291
	292	return SR_OK;
	293	}
	294
	295	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi,
	296	const struct sr_channel_group *cg)
	297	{
	298	int ret;
	299	struct dev_context *devc;
	300	uint64_t num_samples;
	301	const char *slope;
	302	int trigger_pos;
	303	double pos;
	304
	305	(void)cg;
	306	devc = sdi->priv;
	307
	308	if (sdi->status != SR_ST_ACTIVE)
	309	return SR_ERR_DEV_CLOSED;
	310
	311	switch (id) {
	312	case SR_CONF_SAMPLERATE:
	313	// FIXME
	314	return mso_configure_rate(sdi, g_variant_get_uint64(data));
	315	ret = SR_OK;
	316	break;
	317	case SR_CONF_LIMIT_SAMPLES:
	318	num_samples = g_variant_get_uint64(data);
	319	if (num_samples != 1024) {
	320	sr_err("Only 1024 samples are supported.");
	321	ret = SR_ERR_ARG;
	322	} else {
	323	devc->limit_samples = num_samples;
	324	sr_dbg("setting limit_samples to %i\n",
	325	num_samples);
	326	ret = SR_OK;
	327	}
	328	break;
	329	case SR_CONF_CAPTURE_RATIO:
	330	ret = SR_OK;
	331	break;
	332	case SR_CONF_TRIGGER_SLOPE:
	333	slope = g_variant_get_string(data, NULL);
	334
	335	if (!slope \|\| !(slope[0] == 'f' \|\| slope[0] == 'r'))
	336	sr_err("Invalid trigger slope");
	337	ret = SR_ERR_ARG;
	338	} else {
	339	devc->trigger_slope = (slope[0] == 'r')
	340	? SLOPE_POSITIVE : SLOPE_NEGATIVE;
	341	ret = SR_OK;
	342	}
	343	break;
	344	case SR_CONF_HORIZ_TRIGGERPOS:
	345	pos = g_variant_get_double(data);
	346	if (pos < 0 \|\| pos > 255) {
	347	sr_err("Trigger position (%f) should be between 0 and 255.", pos);
	348	ret = SR_ERR_ARG;
	349	} else {
	350	trigger_pos = (int)pos;
	351	devc->trigger_holdoff[0] = trigger_pos & 0xff;
	352	ret = SR_OK;
	353	}
	354	break;
	355	case SR_CONF_RLE:
	356	ret = SR_OK;
	357	break;
	358	default:
	359	ret = SR_ERR_NA;
	360	break;
	361	}
	362
	363	return ret;
	364	}
	365
	366	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
	367	const struct sr_channel_group *cg)
	368	{
	369	GVariant *gvar;
	370	GVariantBuilder gvb;
	371
	372	(void)cg;
	373	(void)sdi;
	374
	375	switch (key) {
	376	case SR_CONF_DEVICE_OPTIONS:
	377	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	378	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	379	break;
	380	case SR_CONF_SAMPLERATE:
	381	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	382	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
	383	ARRAY_SIZE(samplerates), sizeof(uint64_t));
	384	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	385	*data = g_variant_builder_end(&gvb);
	386	break;
	387	case SR_CONF_TRIGGER_TYPE:
	388	*data = g_variant_new_string(TRIGGER_TYPE);
	389	break;
	390	default:
	391	return SR_ERR_NA;
	392	}
	393
	394	return SR_OK;
	395	}
	396
	397	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	398	{
	399	struct dev_context *devc;
	400	int ret = SR_ERR;
	401
	402	if (sdi->status != SR_ST_ACTIVE)
	403	return SR_ERR_DEV_CLOSED;
	404
	405	devc = sdi->priv;
	406
	407	if (mso_configure_channels(sdi) != SR_OK) {
	408	sr_err("Failed to configure channels.");
	409	return SR_ERR;
	410	}
	411
	412	/* FIXME: No need to do full reconfigure every time */
	413	// ret = mso_reset_fsm(sdi);
	414	// if (ret != SR_OK)
	415	// return ret;
	416
	417	/* FIXME: ACDC Mode */
	418	devc->ctlbase1 &= 0x7f;
	419	// devc->ctlbase1 \|= devc->acdcmode;
	420
	421	ret = mso_configure_rate(sdi, devc->cur_rate);
	422	if (ret != SR_OK)
	423	return ret;
	424
	425	/* set dac offset */
	426	ret = mso_dac_out(sdi, devc->dac_offset);
	427	if (ret != SR_OK)
	428	return ret;
	429
	430	ret = mso_configure_threshold_level(sdi);
	431	if (ret != SR_OK)
	432	return ret;
	433
	434	ret = mso_configure_trigger(sdi);
	435	if (ret != SR_OK)
	436	return ret;
	437
	438	/* END of config hardware part */
	439	ret = mso_arm(sdi);
	440	if (ret != SR_OK)
	441	return ret;
	442
	443	/* Start acquisition on the device. */
	444	mso_check_trigger(devc->serial, &devc->trigger_state);
	445	ret = mso_check_trigger(devc->serial, NULL);
	446	if (ret != SR_OK)
	447	return ret;
	448
	449	/* Reset trigger state. */
	450	devc->trigger_state = 0x00;
	451
	452	/* Send header packet to the session bus. */
	453	std_session_send_df_header(cb_data, LOG_PREFIX);
	454
	455	/* Our first channel is analog, the other 8 are of type 'logic'. */
	456	/* TODO. */
	457
	458	serial_source_add(sdi->session, devc->serial, G_IO_IN, -1,
	459	mso_receive_data, cb_data);
	460
	461	return SR_OK;
	462	}
	463
	464	/* This stops acquisition on ALL devices, ignoring dev_index. */
	465	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	466	{
	467	(void)cb_data;
	468
	469	stop_acquisition(sdi);
	470
	471	return SR_OK;
	472	}
	473
	474	SR_PRIV struct sr_dev_driver link_mso19_driver_info = {
	475	.name = "link-mso19",
	476	.longname = "Link Instruments MSO-19",
	477	.api_version = 1,
	478	.init = init,
	479	.cleanup = cleanup,
	480	.scan = scan,
	481	.dev_list = dev_list,
	482	.dev_clear = dev_clear,
	483	.config_get = config_get,
	484	.config_set = config_set,
	485	.config_list = config_list,
	486	.dev_open = dev_open,
	487	.dev_close = std_serial_dev_close,
	488	.dev_acquisition_start = dev_acquisition_start,
	489	.dev_acquisition_stop = dev_acquisition_stop,
	490	.priv = NULL,
	491	};