[libsigrok.git] / src / hardware / lecroy-xstream / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2017 Sven Schnelle <svens@stackframe.org>
 *
 * 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 <stdlib.h>
#include "scpi.h"
#include "protocol.h"

static struct sr_dev_driver lecroy_xstream_driver_info;

static const char *manufacturers[] = {
	"LECROY",
};

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
};

static int check_manufacturer(const char *manufacturer)
{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(manufacturers); i++)
		if (!strcmp(manufacturer, manufacturers[i]))
			return SR_OK;

	return SR_ERR;
}

static struct sr_dev_inst *probe_serial_device(struct sr_scpi_dev_inst *scpi)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_scpi_hw_info *hw_info;

	sdi = NULL;
	devc = NULL;
	hw_info = NULL;

	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
		sr_info("Couldn't get IDN response.");
		goto fail;
	}

	if (check_manufacturer(hw_info->manufacturer) != SR_OK)
		goto fail;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->vendor = g_strdup(hw_info->manufacturer);
	sdi->model = g_strdup(hw_info->model);
	sdi->version = g_strdup(hw_info->firmware_version);
	sdi->serial_num = g_strdup(hw_info->serial_number);
	sdi->driver = &lecroy_xstream_driver_info;
	sdi->inst_type = SR_INST_SCPI;
	sdi->conn = scpi;

	sr_scpi_hw_info_free(hw_info);
	hw_info = NULL;

	devc = g_malloc0(sizeof(struct dev_context));

	sdi->priv = devc;

	if (lecroy_xstream_init_device(sdi) != SR_OK)
		goto fail;

	return sdi;

fail:
	sr_scpi_hw_info_free(hw_info);
	if (sdi)
		sr_dev_inst_free(sdi);
	g_free(devc);

	return NULL;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	return sr_scpi_scan(di->context, options, probe_serial_device);
}

static void clear_helper(void *priv)
{
	struct dev_context *devc;

	devc = priv;

	lecroy_xstream_state_free(devc->model_state);

	g_free(devc->analog_groups);

	g_free(devc);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear(di, clear_helper);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
		return SR_ERR;

	if (lecroy_xstream_state_get(sdi) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	if (sdi->status == SR_ST_INACTIVE)
		return SR_OK;

	sr_scpi_close(sdi->conn);

	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static int config_get(uint32_t key, GVariant **data,
			const struct sr_dev_inst *sdi,
			const struct sr_channel_group *cg)
{
	int ret;
	unsigned int i;
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	ret = SR_ERR_NA;
	model = devc->model_config;
	state = devc->model_state;
	*data = NULL;
	switch (key) {
	case SR_CONF_NUM_HDIV:
		*data = g_variant_new_int32(model->num_xdivs);
		ret = SR_OK;
		break;
	case SR_CONF_TIMEBASE:
		*data = g_variant_new("(tt)",
					model->timebases[state->timebase].p,
					model->timebases[state->timebase].q);
		ret = SR_OK;
		break;
	case SR_CONF_NUM_VDIV:
		for (i = 0; i < model->analog_channels; i++) {
			if (cg != devc->analog_groups[i])
				continue;
			*data = g_variant_new_int32(model->num_ydivs);
			ret = SR_OK;
		}
		break;
	case SR_CONF_VDIV:
		for (i = 0; i < model->analog_channels; i++) {
			if (cg != devc->analog_groups[i])
				continue;
			*data = g_variant_new("(tt)",
				      model->vdivs[state->analog_channels[i].vdiv].p,
				      model->vdivs[state->analog_channels[i].vdiv].q);
			ret = SR_OK;
		}
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SLOPE:
		*data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
		ret = SR_OK;
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		*data = g_variant_new_double(state->horiz_triggerpos);
		ret = SR_OK;
		break;
	case SR_CONF_COUPLING:

		for (i = 0; i < model->analog_channels; i++) {
			if (cg != devc->analog_groups[i]) {
				continue;
			}
			*data = g_variant_new_string((*model->coupling_options)[state->analog_channels[i].coupling]);
			ret = SR_OK;
		}
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(state->sample_rate);
		ret = SR_OK;
		break;
	case SR_CONF_ENABLED:
		*data = g_variant_new_boolean(FALSE);
		ret = SR_OK;
		break;
	default:
		ret = SR_ERR_NA;
	}
	return ret;
}

static GVariant *build_tuples(const struct sr_rational *array, unsigned int n)
{
	unsigned int i;
	GVariant *rational[2];
	GVariantBuilder gvb;

	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);

	for (i = 0; i < n; i++) {
		rational[0] = g_variant_new_uint64(array[i].p);
		rational[1] = g_variant_new_uint64(array[i].q);

		/* FIXME: Valgrind reports a memory leak here. */
		g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	}

	return g_variant_builder_end(&gvb);
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		      const struct sr_channel_group *cg)
{
	int ret;
	unsigned int i, j;
	char command[MAX_COMMAND_SIZE];
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;
	const char *tmp;
	int64_t p;
	uint64_t q;
	double tmp_d;
	gboolean update_sample_rate;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	model = devc->model_config;
	state = devc->model_state;
	update_sample_rate = FALSE;

	ret = SR_ERR_NA;

	switch (key) {
	case SR_CONF_LIMIT_FRAMES:
		devc->frame_limit = g_variant_get_uint64(data);
		ret = SR_OK;
		break;
	case SR_CONF_TRIGGER_SOURCE:
		tmp = g_variant_get_string(data, NULL);
		for (i = 0; (*model->trigger_sources)[i]; i++) {
			if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
				continue;
			state->trigger_source = i;
			g_snprintf(command, sizeof(command),
					"SET TRIGGER SOURCE %s",
					(*model->trigger_sources)[i]);

			ret = sr_scpi_send(sdi->conn, command);
			break;
		}
		break;
	case SR_CONF_VDIV:
		g_variant_get(data, "(tt)", &p, &q);

		for (i = 0; i < model->num_vdivs; i++) {
			if (p != model->vdivs[i].p || q != model->vdivs[i].q)
				continue;
			for (j = 1; j <= model->analog_channels; j++) {
				if (cg != devc->analog_groups[j - 1])
					continue;
				state->analog_channels[j - 1].vdiv = i;
				g_snprintf(command, sizeof(command),
						"C%d:VDIV %E", j, (float)p/q);

				if (sr_scpi_send(sdi->conn, command) != SR_OK ||
				    sr_scpi_get_opc(sdi->conn) != SR_OK)
					return SR_ERR;

				break;
			}

			ret = SR_OK;
			break;
		}
		break;
	case SR_CONF_TIMEBASE:
		g_variant_get(data, "(tt)", &p, &q);

		for (i = 0; i < model->num_timebases; i++) {
			if (p != model->timebases[i].p ||
			    q != model->timebases[i].q)
				continue;
			state->timebase = i;
			g_snprintf(command, sizeof(command),
					"TIME_DIV %E", (float)p/q);

			ret = sr_scpi_send(sdi->conn, command);
			update_sample_rate = TRUE;
			break;
		}
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		tmp_d = g_variant_get_double(data);

		if (tmp_d < 0.0 || tmp_d > 1.0)
			return SR_ERR;

		state->horiz_triggerpos = tmp_d;
		tmp_d = -(tmp_d - 0.5) *
			((double)model->timebases[state->timebase].p /
			 model->timebases[state->timebase].q)
			 * model->num_xdivs;

		g_snprintf(command, sizeof(command), "TRIG POS %e S", tmp_d);

		ret = sr_scpi_send(sdi->conn, command);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		tmp = g_variant_get_string(data, NULL);
		for (i = 0; (*model->trigger_slopes)[i]; i++) {
			if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0)
				continue;
			state->trigger_slope = i;
			g_snprintf(command, sizeof(command),
					"SET TRIGGER SLOPE %s",
					(*model->trigger_slopes)[i]);

			ret = sr_scpi_send(sdi->conn, command);
			break;
		}
		break;
	case SR_CONF_COUPLING:

		tmp = g_variant_get_string(data, NULL);

		for (i = 0; (*model->coupling_options)[i]; i++) {
			if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
				continue;
			for (j = 1; j <= model->analog_channels; j++) {
				if (cg != devc->analog_groups[j - 1])
					continue;
				state->analog_channels[j-1].coupling = i;

				g_snprintf(command, sizeof(command),
						"C%d:COUPLING %s", j, tmp);

				if (sr_scpi_send(sdi->conn, command) != SR_OK ||
				    sr_scpi_get_opc(sdi->conn) != SR_OK)
					return SR_ERR;
				break;
			}

			ret = SR_OK;
			break;
		}
		break;
	default:
		ret = SR_ERR_NA;
		break;
	}

	if (ret == SR_OK)
		ret = sr_scpi_get_opc(sdi->conn);

	if (ret == SR_OK && update_sample_rate)
		ret = lecroy_xstream_update_sample_rate(sdi);

	return ret;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		       const struct sr_channel_group *cg)
{
	struct dev_context *devc = NULL;
	const struct scope_config *model = NULL;
	(void)cg;

	if (sdi) {
		devc = sdi->priv;
		model = devc->model_config;
	}

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		if (!cg) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
							  model->devopts,
							  model->num_devopts,
							  sizeof(uint32_t));
			break;
		}
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
						  model->analog_devopts,
						  model->num_analog_devopts,
						  sizeof(uint32_t));
		break;
	case SR_CONF_COUPLING:
		*data = g_variant_new_strv(*model->coupling_options,
			   g_strv_length((char **)*model->coupling_options));
		break;
	case SR_CONF_TRIGGER_SOURCE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_sources,
			   g_strv_length((char **)*model->trigger_sources));
		break;
	case SR_CONF_TRIGGER_SLOPE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_slopes,
			   g_strv_length((char **)*model->trigger_slopes));
		break;
	case SR_CONF_TIMEBASE:
		if (!model)
			return SR_ERR_ARG;
		*data = build_tuples(model->timebases, model->num_timebases);
		break;
	case SR_CONF_VDIV:
		if (!model)
			return SR_ERR_ARG;
		*data = build_tuples(model->vdivs, model->num_vdivs);
		break;
	default:
		return SR_ERR_NA;
	}
	return SR_OK;
}

SR_PRIV int lecroy_xstream_request_data(const struct sr_dev_inst *sdi)
{
	char command[MAX_COMMAND_SIZE];
	struct sr_channel *ch;
	struct dev_context *devc;

	devc = sdi->priv;

	ch = devc->current_channel->data;

	if (ch->type != SR_CHANNEL_ANALOG)
		return SR_ERR;

	g_snprintf(command, sizeof(command),
			"COMM_FORMAT DEF9,WORD,BIN;C%d:WAVEFORM?", ch->index+1);
	return sr_scpi_send(sdi->conn, command);
}

static int lecroy_setup_channels(const struct sr_dev_inst *sdi)
{
	GSList *l;
	gboolean setup_changed;
	char command[MAX_COMMAND_SIZE];
	struct scope_state *state;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

	devc = sdi->priv;
	scpi = sdi->conn;
	state = devc->model_state;
	setup_changed = FALSE;

	for (l = sdi->channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_ANALOG:
			if (ch->enabled == state->analog_channels[ch->index].state)
				break;
			g_snprintf(command, sizeof(command), "C%d:TRACE %s",
				   ch->index+1, ch->enabled ? "ON" : "OFF");

			if (sr_scpi_send(scpi, command) != SR_OK)
				return SR_ERR;
			state->analog_channels[ch->index].state = ch->enabled;
			setup_changed = TRUE;
			break;
		default:
			return SR_ERR;
		}
	}

	if (setup_changed && lecroy_xstream_update_sample_rate(sdi) != SR_OK)
		return SR_ERR;

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	GSList *l;
	struct sr_channel *ch;
	struct dev_context *devc;
	int ret;
	struct sr_scpi_dev_inst *scpi;

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

	devc = sdi->priv;
	scpi = sdi->conn;
	/* Preset empty results. */
	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;

	/*
	 * Contruct the list of enabled channels. Determine the highest
	 * number of digital pods involved in the acquisition.
	 */

	for (l = sdi->channels; l; l = l->next) {
		ch = l->data;
		if (!ch->enabled)
			continue;
		/* Only add a single digital channel per group (pod). */
		devc->enabled_channels = g_slist_append(
			devc->enabled_channels, ch);
	}

	if (!devc->enabled_channels)
		return SR_ERR;

	/*
	 * Configure the analog channels and the
	 * corresponding digital pods.
	 */
	if (lecroy_setup_channels(sdi) != SR_OK) {
		sr_err("Failed to setup channel configuration!");
		ret = SR_ERR;
		goto free_enabled;
	}

	/*
	 * Start acquisition on the first enabled channel. The
	 * receive routine will continue driving the acquisition.
	 */
	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
			lecroy_xstream_receive_data, (void *)sdi);

	std_session_send_df_header(sdi);

	devc->current_channel = devc->enabled_channels;

	return lecroy_xstream_request_data(sdi);

free_enabled:
	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;
	return ret;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

	std_session_send_df_end(sdi);

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

	devc = sdi->priv;

	devc->num_frames = 0;
	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;
	scpi = sdi->conn;
	sr_scpi_source_remove(sdi->session, scpi);

	return SR_OK;
}

static struct sr_dev_driver lecroy_xstream_driver_info = {
	.name = "lecroy-xstream",
	.longname = "LeCroy X-Stream",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(lecroy_xstream_driver_info);
Commit	Line	Data
e3b83c5e SS	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2017 Sven Schnelle <svens@stackframe.org>
	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 3 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, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <config.h>
3f2c7c94 SS	21	#include <stdlib.h>
3f2c7c94 SS	22	#include "scpi.h"
e3b83c5e SS	23	#include "protocol.h"
e3b83c5e SS	24
3f2c7c94 SS	25	static struct sr_dev_driver lecroy_xstream_driver_info;
	26
	27	static const char *manufacturers[] = {
	28	"LECROY",
	29	};
	30
	31	static const uint32_t scanopts[] = {
	32	SR_CONF_CONN,
	33	};
	34
	35	static int check_manufacturer(const char *manufacturer)
	36	{
	37	unsigned int i;
	38
	39	for (i = 0; i < ARRAY_SIZE(manufacturers); i++)
	40	if (!strcmp(manufacturer, manufacturers[i]))
	41	return SR_OK;
	42
	43	return SR_ERR;
	44	}
	45
	46	static struct sr_dev_inst probe_serial_device(struct sr_scpi_dev_inst scpi)
	47	{
	48	struct sr_dev_inst *sdi;
	49	struct dev_context *devc;
	50	struct sr_scpi_hw_info *hw_info;
	51
	52	sdi = NULL;
	53	devc = NULL;
	54	hw_info = NULL;
	55
3f2c7c94 SS	56	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	57	sr_info("Couldn't get IDN response.");
	58	goto fail;
	59	}
	60
	61	if (check_manufacturer(hw_info->manufacturer) != SR_OK)
	62	goto fail;
	63
	64	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	65	sdi->vendor = g_strdup(hw_info->manufacturer);
	66	sdi->model = g_strdup(hw_info->model);
	67	sdi->version = g_strdup(hw_info->firmware_version);
	68	sdi->serial_num = g_strdup(hw_info->serial_number);
	69	sdi->driver = &lecroy_xstream_driver_info;
	70	sdi->inst_type = SR_INST_SCPI;
	71	sdi->conn = scpi;
	72
	73	sr_scpi_hw_info_free(hw_info);
	74	hw_info = NULL;
	75
	76	devc = g_malloc0(sizeof(struct dev_context));
	77
	78	sdi->priv = devc;
	79
	80	if (lecroy_xstream_init_device(sdi) != SR_OK)
	81	goto fail;
	82
	83	return sdi;
	84
	85	fail:
	86	sr_scpi_hw_info_free(hw_info);
	87	if (sdi)
	88	sr_dev_inst_free(sdi);
	89	g_free(devc);
	90
	91	return NULL;
	92	}
e3b83c5e SS	93
	94	static GSList scan(struct sr_dev_driver di, GSList *options)
	95	{
3f2c7c94 SS	96	return sr_scpi_scan(di->context, options, probe_serial_device);
	97	}
	98
	99	static void clear_helper(void *priv)
	100	{
	101	struct dev_context *devc;
e3b83c5e	102
3f2c7c94	103	devc = priv;
e3b83c5e	104
3f2c7c94	105	lecroy_xstream_state_free(devc->model_state);
e3b83c5e	106
3f2c7c94	107	g_free(devc->analog_groups);
e3b83c5e	108
3f2c7c94	109	g_free(devc);
e3b83c5e SS	110	}
	111
	112	static int dev_clear(const struct sr_dev_driver *di)
	113	{
3f2c7c94	114	return std_dev_clear(di, clear_helper);
e3b83c5e SS	115	}
	116
	117	static int dev_open(struct sr_dev_inst *sdi)
	118	{
3f2c7c94 SS	119	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
3f2c7c94 SS	120	return SR_ERR;
e3b83c5e	121
3f2c7c94 SS	122	if (lecroy_xstream_state_get(sdi) != SR_OK)
3f2c7c94 SS	123	return SR_ERR;
e3b83c5e SS	124
	125	sdi->status = SR_ST_ACTIVE;
	126
	127	return SR_OK;
	128	}
	129
	130	static int dev_close(struct sr_dev_inst *sdi)
	131	{
3f2c7c94 SS	132	if (sdi->status == SR_ST_INACTIVE)
3f2c7c94 SS	133	return SR_OK;
e3b83c5e	134
3f2c7c94	135	sr_scpi_close(sdi->conn);
e3b83c5e SS	136
	137	sdi->status = SR_ST_INACTIVE;
	138
	139	return SR_OK;
	140	}
	141
	142	static int config_get(uint32_t key, GVariant **data,
3f2c7c94 SS	143	const struct sr_dev_inst *sdi,
3f2c7c94 SS	144	const struct sr_channel_group *cg)
e3b83c5e SS	145	{
e3b83c5e SS	146	int ret;
3f2c7c94 SS	147	unsigned int i;
	148	struct dev_context *devc;
	149	const struct scope_config *model;
	150	struct scope_state *state;
e3b83c5e	151
3f2c7c94 SS	152	if (!sdi)
	153	return SR_ERR_ARG;
	154
	155	devc = sdi->priv;
e3b83c5e	156
3f2c7c94 SS	157	ret = SR_ERR_NA;
	158	model = devc->model_config;
	159	state = devc->model_state;
	160	*data = NULL;
e3b83c5e	161	switch (key) {
3f2c7c94 SS	162	case SR_CONF_NUM_HDIV:
	163	*data = g_variant_new_int32(model->num_xdivs);
	164	ret = SR_OK;
	165	break;
	166	case SR_CONF_TIMEBASE:
	167	*data = g_variant_new("(tt)",
	168	model->timebases[state->timebase].p,
	169	model->timebases[state->timebase].q);
	170	ret = SR_OK;
	171	break;
	172	case SR_CONF_NUM_VDIV:
	173	for (i = 0; i < model->analog_channels; i++) {
	174	if (cg != devc->analog_groups[i])
	175	continue;
	176	*data = g_variant_new_int32(model->num_ydivs);
	177	ret = SR_OK;
	178	}
	179	break;
	180	case SR_CONF_VDIV:
	181	for (i = 0; i < model->analog_channels; i++) {
	182	if (cg != devc->analog_groups[i])
	183	continue;
	184	*data = g_variant_new("(tt)",
	185	model->vdivs[state->analog_channels[i].vdiv].p,
	186	model->vdivs[state->analog_channels[i].vdiv].q);
	187	ret = SR_OK;
	188	}
	189	break;
	190	case SR_CONF_TRIGGER_SOURCE:
	191	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	192	ret = SR_OK;
	193	break;
	194	case SR_CONF_TRIGGER_SLOPE:
	195	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	196	ret = SR_OK;
	197	break;
	198	case SR_CONF_HORIZ_TRIGGERPOS:
	199	*data = g_variant_new_double(state->horiz_triggerpos);
	200	ret = SR_OK;
	201	break;
	202	case SR_CONF_COUPLING:
	203
	204	for (i = 0; i < model->analog_channels; i++) {
	205	if (cg != devc->analog_groups[i]) {
	206	continue;
	207	}
	208	data = g_variant_new_string((model->coupling_options)[state->analog_channels[i].coupling]);
	209	ret = SR_OK;
	210	}
	211	break;
	212	case SR_CONF_SAMPLERATE:
	213	*data = g_variant_new_uint64(state->sample_rate);
	214	ret = SR_OK;
	215	break;
	216	case SR_CONF_ENABLED:
	217	*data = g_variant_new_boolean(FALSE);
	218	ret = SR_OK;
	219	break;
e3b83c5e	220	default:
3f2c7c94	221	ret = SR_ERR_NA;
e3b83c5e	222	}
e3b83c5e SS	223	return ret;
	224	}
	225
3f2c7c94 SS	226	static GVariant build_tuples(const struct sr_rational array, unsigned int n)
	227	{
	228	unsigned int i;
	229	GVariant *rational[2];
	230	GVariantBuilder gvb;
	231
	232	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	233
	234	for (i = 0; i < n; i++) {
	235	rational[0] = g_variant_new_uint64(array[i].p);
	236	rational[1] = g_variant_new_uint64(array[i].q);
	237
	238	/* FIXME: Valgrind reports a memory leak here. */
	239	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	240	}
	241
	242	return g_variant_builder_end(&gvb);
	243	}
	244
	245	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	246	const struct sr_channel_group *cg)
e3b83c5e SS	247	{
e3b83c5e SS	248	int ret;
3f2c7c94 SS	249	unsigned int i, j;
	250	char command[MAX_COMMAND_SIZE];
	251	struct dev_context *devc;
	252	const struct scope_config *model;
	253	struct scope_state *state;
	254	const char *tmp;
	255	int64_t p;
	256	uint64_t q;
	257	double tmp_d;
	258	gboolean update_sample_rate;
e3b83c5e	259
3f2c7c94 SS	260	if (!sdi)
3f2c7c94 SS	261	return SR_ERR_ARG;
e3b83c5e	262
3f2c7c94 SS	263	devc = sdi->priv;
	264
	265	model = devc->model_config;
	266	state = devc->model_state;
	267	update_sample_rate = FALSE;
	268
	269	ret = SR_ERR_NA;
e3b83c5e	270
e3b83c5e	271	switch (key) {
3f2c7c94 SS	272	case SR_CONF_LIMIT_FRAMES:
	273	devc->frame_limit = g_variant_get_uint64(data);
	274	ret = SR_OK;
	275	break;
	276	case SR_CONF_TRIGGER_SOURCE:
	277	tmp = g_variant_get_string(data, NULL);
	278	for (i = 0; (*model->trigger_sources)[i]; i++) {
	279	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	280	continue;
	281	state->trigger_source = i;
	282	g_snprintf(command, sizeof(command),
	283	"SET TRIGGER SOURCE %s",
	284	(*model->trigger_sources)[i]);
	285
	286	ret = sr_scpi_send(sdi->conn, command);
	287	break;
	288	}
	289	break;
	290	case SR_CONF_VDIV:
	291	g_variant_get(data, "(tt)", &p, &q);
	292
	293	for (i = 0; i < model->num_vdivs; i++) {
	294	if (p != model->vdivs[i].p \|\| q != model->vdivs[i].q)
	295	continue;
	296	for (j = 1; j <= model->analog_channels; j++) {
	297	if (cg != devc->analog_groups[j - 1])
	298	continue;
	299	state->analog_channels[j - 1].vdiv = i;
	300	g_snprintf(command, sizeof(command),
	301	"C%d:VDIV %E", j, (float)p/q);
	302
	303	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	304	sr_scpi_get_opc(sdi->conn) != SR_OK)
	305	return SR_ERR;
	306
	307	break;
	308	}
	309
	310	ret = SR_OK;
	311	break;
	312	}
	313	break;
	314	case SR_CONF_TIMEBASE:
	315	g_variant_get(data, "(tt)", &p, &q);
	316
	317	for (i = 0; i < model->num_timebases; i++) {
	318	if (p != model->timebases[i].p \|\|
	319	q != model->timebases[i].q)
	320	continue;
	321	state->timebase = i;
	322	g_snprintf(command, sizeof(command),
	323	"TIME_DIV %E", (float)p/q);
	324
	325	ret = sr_scpi_send(sdi->conn, command);
	326	update_sample_rate = TRUE;
	327	break;
	328	}
	329	break;
	330	case SR_CONF_HORIZ_TRIGGERPOS:
	331	tmp_d = g_variant_get_double(data);
	332
	333	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	334	return SR_ERR;
	335
336	state->horiz_triggerpos = tmp_d;
337	tmp_d = -(tmp_d - 0.5) *
338	((double)model->timebases[state->timebase].p /
339	model->timebases[state->timebase].q)
340	* model->num_xdivs;
341
342	g_snprintf(command, sizeof(command), "TRIG POS %e S", tmp_d);
343
344	ret = sr_scpi_send(sdi->conn, command);
345	break;
346	case SR_CONF_TRIGGER_SLOPE:
347	tmp = g_variant_get_string(data, NULL);
348	for (i = 0; (*model->trigger_slopes)[i]; i++) {
349	if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0)
350	continue;
351	state->trigger_slope = i;
352	g_snprintf(command, sizeof(command),
353	"SET TRIGGER SLOPE %s",
354	(*model->trigger_slopes)[i]);
355
356	ret = sr_scpi_send(sdi->conn, command);
357	break;
358	}
359	break;
360	case SR_CONF_COUPLING:
361
362	tmp = g_variant_get_string(data, NULL);
363
364	for (i = 0; (*model->coupling_options)[i]; i++) {
365	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
366	continue;
367	for (j = 1; j <= model->analog_channels; j++) {
368	if (cg != devc->analog_groups[j - 1])
369	continue;
370	state->analog_channels[j-1].coupling = i;
371
372	g_snprintf(command, sizeof(command),
373	"C%d:COUPLING %s", j, tmp);
374
375	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
376	sr_scpi_get_opc(sdi->conn) != SR_OK)
377	return SR_ERR;
378	break;
379	}
380
381	ret = SR_OK;
382	break;
383	}
384	break;
e3b83c5e SS	385	default:
e3b83c5e SS	386	ret = SR_ERR_NA;
3f2c7c94	387	break;
e3b83c5e SS	388	}
e3b83c5e SS	389
3f2c7c94 SS	390	if (ret == SR_OK)
	391	ret = sr_scpi_get_opc(sdi->conn);
	392
	393	if (ret == SR_OK && update_sample_rate)
	394	ret = lecroy_xstream_update_sample_rate(sdi);
	395
e3b83c5e SS	396	return ret;
	397	}
	398
3f2c7c94 SS	399	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
3f2c7c94 SS	400	const struct sr_channel_group *cg)
e3b83c5e	401	{
3f2c7c94 SS	402	struct dev_context *devc = NULL;
3f2c7c94 SS	403	const struct scope_config *model = NULL;
e3b83c5e SS	404	(void)cg;
e3b83c5e SS	405
3f2c7c94 SS	406	if (sdi) {
	407	devc = sdi->priv;
	408	model = devc->model_config;
	409	}
	410
e3b83c5e	411	switch (key) {
3f2c7c94 SS	412	case SR_CONF_SCAN_OPTIONS:
	413	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	414	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	415	break;
	416	case SR_CONF_DEVICE_OPTIONS:
	417	if (!cg) {
	418	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	419	model->devopts,
	420	model->num_devopts,
	421	sizeof(uint32_t));
	422	break;
	423	}
	424	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	425	model->analog_devopts,
	426	model->num_analog_devopts,
	427	sizeof(uint32_t));
	428	break;
	429	case SR_CONF_COUPLING:
	430	data = g_variant_new_strv(model->coupling_options,
	431	g_strv_length((char *)model->coupling_options));
	432	break;
	433	case SR_CONF_TRIGGER_SOURCE:
	434	if (!model)
	435	return SR_ERR_ARG;
	436	data = g_variant_new_strv(model->trigger_sources,
	437	g_strv_length((char *)model->trigger_sources));
	438	break;
	439	case SR_CONF_TRIGGER_SLOPE:
	440	if (!model)
	441	return SR_ERR_ARG;
	442	data = g_variant_new_strv(model->trigger_slopes,
	443	g_strv_length((char *)model->trigger_slopes));
	444	break;
	445	case SR_CONF_TIMEBASE:
	446	if (!model)
	447	return SR_ERR_ARG;
	448	*data = build_tuples(model->timebases, model->num_timebases);
	449	break;
	450	case SR_CONF_VDIV:
	451	if (!model)
	452	return SR_ERR_ARG;
	453	*data = build_tuples(model->vdivs, model->num_vdivs);
	454	break;
e3b83c5e SS	455	default:
	456	return SR_ERR_NA;
	457	}
3f2c7c94 SS	458	return SR_OK;
3f2c7c94 SS	459	}
e3b83c5e	460
3f2c7c94 SS	461	SR_PRIV int lecroy_xstream_request_data(const struct sr_dev_inst *sdi)
	462	{
	463	char command[MAX_COMMAND_SIZE];
	464	struct sr_channel *ch;
	465	struct dev_context *devc;
	466
	467	devc = sdi->priv;
	468
	469	ch = devc->current_channel->data;
	470
	471	if (ch->type != SR_CHANNEL_ANALOG)
	472	return SR_ERR;
	473
	474	g_snprintf(command, sizeof(command),
	475	"COMM_FORMAT DEF9,WORD,BIN;C%d:WAVEFORM?", ch->index+1);
	476	return sr_scpi_send(sdi->conn, command);
	477	}
	478
	479	static int lecroy_setup_channels(const struct sr_dev_inst *sdi)
	480	{
	481	GSList *l;
	482	gboolean setup_changed;
	483	char command[MAX_COMMAND_SIZE];
	484	struct scope_state *state;
	485	struct sr_channel *ch;
	486	struct dev_context *devc;
	487	struct sr_scpi_dev_inst *scpi;
	488
	489	devc = sdi->priv;
	490	scpi = sdi->conn;
	491	state = devc->model_state;
	492	setup_changed = FALSE;
	493
	494	for (l = sdi->channels; l; l = l->next) {
	495	ch = l->data;
	496	switch (ch->type) {
	497	case SR_CHANNEL_ANALOG:
	498	if (ch->enabled == state->analog_channels[ch->index].state)
	499	break;
	500	g_snprintf(command, sizeof(command), "C%d:TRACE %s",
	501	ch->index+1, ch->enabled ? "ON" : "OFF");
	502
	503	if (sr_scpi_send(scpi, command) != SR_OK)
	504	return SR_ERR;
	505	state->analog_channels[ch->index].state = ch->enabled;
	506	setup_changed = TRUE;
	507	break;
	508	default:
	509	return SR_ERR;
	510	}
	511	}
	512
	513	if (setup_changed && lecroy_xstream_update_sample_rate(sdi) != SR_OK)
	514	return SR_ERR;
	515
	516	return SR_OK;
e3b83c5e SS	517	}
	518
	519	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	520	{
3f2c7c94 SS	521	GSList *l;
	522	struct sr_channel *ch;
	523	struct dev_context *devc;
	524	int ret;
	525	struct sr_scpi_dev_inst *scpi;
	526
e3b83c5e SS	527	if (sdi->status != SR_ST_ACTIVE)
	528	return SR_ERR_DEV_CLOSED;
	529
3f2c7c94 SS	530	devc = sdi->priv;
	531	scpi = sdi->conn;
	532	/* Preset empty results. */
	533	g_slist_free(devc->enabled_channels);
	534	devc->enabled_channels = NULL;
	535
	536	/*
	537	* Contruct the list of enabled channels. Determine the highest
	538	* number of digital pods involved in the acquisition.
	539	*/
	540
	541	for (l = sdi->channels; l; l = l->next) {
	542	ch = l->data;
	543	if (!ch->enabled)
	544	continue;
	545	/* Only add a single digital channel per group (pod). */
	546	devc->enabled_channels = g_slist_append(
	547	devc->enabled_channels, ch);
	548	}
e3b83c5e	549
3f2c7c94 SS	550	if (!devc->enabled_channels)
	551	return SR_ERR;
	552
	553	/*
	554	* Configure the analog channels and the
	555	* corresponding digital pods.
	556	*/
	557	if (lecroy_setup_channels(sdi) != SR_OK) {
	558	sr_err("Failed to setup channel configuration!");
	559	ret = SR_ERR;
	560	goto free_enabled;
	561	}
	562
	563	/*
	564	* Start acquisition on the first enabled channel. The
	565	* receive routine will continue driving the acquisition.
	566	*/
	567	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
	568	lecroy_xstream_receive_data, (void *)sdi);
	569
	570	std_session_send_df_header(sdi);
	571
	572	devc->current_channel = devc->enabled_channels;
	573
	574	return lecroy_xstream_request_data(sdi);
	575
	576	free_enabled:
	577	g_slist_free(devc->enabled_channels);
	578	devc->enabled_channels = NULL;
	579	return ret;
e3b83c5e SS	580	}
	581
	582	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	583	{
3f2c7c94 SS	584	struct dev_context *devc;
	585	struct sr_scpi_dev_inst *scpi;
	586
	587	std_session_send_df_end(sdi);
	588
e3b83c5e SS	589	if (sdi->status != SR_ST_ACTIVE)
	590	return SR_ERR_DEV_CLOSED;
	591
3f2c7c94 SS	592	devc = sdi->priv;
	593
	594	devc->num_frames = 0;
	595	g_slist_free(devc->enabled_channels);
	596	devc->enabled_channels = NULL;
	597	scpi = sdi->conn;
	598	sr_scpi_source_remove(sdi->session, scpi);
e3b83c5e SS	599
	600	return SR_OK;
	601	}
	602
3f2c7c94	603	static struct sr_dev_driver lecroy_xstream_driver_info = {
e3b83c5e	604	.name = "lecroy-xstream",
bb08570f	605	.longname = "LeCroy X-Stream",
e3b83c5e SS	606	.api_version = 1,
	607	.init = std_init,
	608	.cleanup = std_cleanup,
	609	.scan = scan,
	610	.dev_list = std_dev_list,
	611	.dev_clear = dev_clear,
	612	.config_get = config_get,
	613	.config_set = config_set,
	614	.config_list = config_list,
	615	.dev_open = dev_open,
	616	.dev_close = dev_close,
	617	.dev_acquisition_start = dev_acquisition_start,
	618	.dev_acquisition_stop = dev_acquisition_stop,
	619	.context = NULL,
	620	};
e3b83c5e	621	SR_REGISTER_DEV_DRIVER(lecroy_xstream_driver_info);