[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 const uint32_t drvopts[] = {
	SR_CONF_OSCILLOSCOPE,
};

static const uint32_t devopts[] = {
	SR_CONF_LIMIT_FRAMES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET,
	SR_CONF_TIMEBASE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_NUM_HDIV | SR_CONF_GET,
	SR_CONF_HORIZ_TRIGGERPOS | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_TRIGGER_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_TRIGGER_SLOPE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const uint32_t devopts_cg_analog[] = {
	SR_CONF_NUM_VDIV | SR_CONF_GET,
	SR_CONF_VDIV | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_COUPLING | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static struct sr_dev_inst *probe_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 (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0)
		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);
	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_device);
}

static void clear_helper(struct dev_context *devc)
{
	lecroy_xstream_state_free(devc->model_state);
	g_free(devc->analog_groups);
}

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

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

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

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	return sr_scpi_close(sdi->conn);
}

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

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	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);
		break;
	case SR_CONF_TIMEBASE:
		*data = g_variant_new("(tt)",
				(*model->timebases)[state->timebase][0],
				(*model->timebases)[state->timebase][1]);
		break;
	case SR_CONF_NUM_VDIV:
		if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0)
			return SR_ERR_ARG;
		*data = g_variant_new_int32(model->num_ydivs);
		break;
	case SR_CONF_VDIV:
		if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
			return SR_ERR_ARG;
		*data = g_variant_new("(tt)",
				(*model->vdivs)[state->analog_channels[idx].vdiv][0],
				(*model->vdivs)[state->analog_channels[idx].vdiv][1]);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = g_variant_new_string((*model->trigger_sources)[state->trigger_source]);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		*data = g_variant_new_string((*model->trigger_slopes)[state->trigger_slope]);
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		*data = g_variant_new_double(state->horiz_triggerpos);
		break;
	case SR_CONF_COUPLING:
		if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
			return SR_ERR_ARG;
		*data = g_variant_new_string((*model->coupling_options)[state->analog_channels[idx].coupling]);
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(state->sample_rate);
		break;
	case SR_CONF_ENABLED:
		*data = g_variant_new_boolean(FALSE);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int config_set(uint32_t key, GVariant *data,
		const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	int ret, idx, j;
	char command[MAX_COMMAND_SIZE];
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;
	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:
		if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0)
			return SR_ERR_ARG;
		state->trigger_source = idx;
		g_snprintf(command, sizeof(command),
				"TRIG_SELECT EDGE,SR,%s", (*model->trigger_sources)[idx]);
		ret = sr_scpi_send(sdi->conn, command);
		break;
	case SR_CONF_VDIV:
		if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0)
			return SR_ERR_ARG;
		if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
			return SR_ERR_ARG;
		state->analog_channels[j].vdiv = idx;
		g_snprintf(command, sizeof(command),
				"C%d:VDIV %E", j + 1, (float) (*model->vdivs)[idx][0] / (*model->vdivs)[idx][1]);
		if (sr_scpi_send(sdi->conn, command) != SR_OK || sr_scpi_get_opc(sdi->conn) != SR_OK)
			return SR_ERR;
		ret = SR_OK;
		break;
	case SR_CONF_TIMEBASE:
		if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0)
			return SR_ERR_ARG;
		state->timebase = idx;
		g_snprintf(command, sizeof(command),
				"TIME_DIV %E", (float) (*model->timebases)[idx][0] / (*model->timebases)[idx][1]);
		ret = sr_scpi_send(sdi->conn, command);
		update_sample_rate = TRUE;
		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][0] /
				(*model->timebases)[state->timebase][1])
				* 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:
		if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0)
			return SR_ERR_ARG;
		state->trigger_slope = idx;
		g_snprintf(command, sizeof(command),
				"%s:TRIG_SLOPE %s", (*model->trigger_sources)[state->trigger_source],
				(*model->trigger_slopes)[idx]);
		ret = sr_scpi_send(sdi->conn, command);
		break;
	case SR_CONF_COUPLING:
		if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0)
			return SR_ERR_ARG;
		if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
			return SR_ERR_ARG;
		state->analog_channels[j].coupling = idx;
		g_snprintf(command, sizeof(command), "C%d:COUPLING %s",
				j + 1, (*model->coupling_options)[idx]);
		if (sr_scpi_send(sdi->conn, command) != SR_OK || sr_scpi_get_opc(sdi->conn) != SR_OK)
			return SR_ERR;
		ret = SR_OK;
		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;
	const struct scope_config *model;

	devc = (sdi) ? sdi->priv : NULL;
	model = (devc) ? devc->model_config : NULL;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, NULL, NULL);
	case SR_CONF_DEVICE_OPTIONS:
		if (!cg)
			return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
		*data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
		break;
	case SR_CONF_COUPLING:
		*data = g_variant_new_strv(*model->coupling_options, model->num_coupling_options);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_sources, model->num_trigger_sources);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		if (!model)
			return SR_ERR_ARG;
		*data = g_variant_new_strv(*model->trigger_slopes, model->num_trigger_slopes);
		break;
	case SR_CONF_TIMEBASE:
		if (!model)
			return SR_ERR_ARG;
		*data = std_gvar_tuple_array(*model->timebases, model->num_timebases);
		break;
	case SR_CONF_VDIV:
		if (!model)
			return SR_ERR_ARG;
		*data = std_gvar_tuple_array(*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), "C%d:WAVEFORM?", ch->index + 1);
	return sr_scpi_send(sdi->conn, command);
}

static int 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;

	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 (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);

	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
	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>
	21	#include <stdlib.h>
	22	#include "scpi.h"
	23	#include "protocol.h"
	24
	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 const uint32_t drvopts[] = {
	36	SR_CONF_OSCILLOSCOPE,
	37	};
	38
	39	static const uint32_t devopts[] = {
	40	SR_CONF_LIMIT_FRAMES \| SR_CONF_GET \| SR_CONF_SET,
	41	SR_CONF_SAMPLERATE \| SR_CONF_GET,
	42	SR_CONF_TIMEBASE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	43	SR_CONF_NUM_HDIV \| SR_CONF_GET,
	44	SR_CONF_HORIZ_TRIGGERPOS \| SR_CONF_GET \| SR_CONF_SET,
	45	SR_CONF_TRIGGER_SOURCE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	46	SR_CONF_TRIGGER_SLOPE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	47	};
	48
	49	static const uint32_t devopts_cg_analog[] = {
	50	SR_CONF_NUM_VDIV \| SR_CONF_GET,
	51	SR_CONF_VDIV \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	52	SR_CONF_COUPLING \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	53	};
	54
	55	static struct sr_dev_inst probe_device(struct sr_scpi_dev_inst scpi)
	56	{
	57	struct sr_dev_inst *sdi;
	58	struct dev_context *devc;
	59	struct sr_scpi_hw_info *hw_info;
	60
	61	sdi = NULL;
	62	devc = NULL;
	63	hw_info = NULL;
	64
	65	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	66	sr_info("Couldn't get IDN response.");
	67	goto fail;
	68	}
	69
	70	if (std_str_idx_s(hw_info->manufacturer, ARRAY_AND_SIZE(manufacturers)) < 0)
	71	goto fail;
	72
	73	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	74	sdi->vendor = g_strdup(hw_info->manufacturer);
	75	sdi->model = g_strdup(hw_info->model);
	76	sdi->version = g_strdup(hw_info->firmware_version);
	77	sdi->serial_num = g_strdup(hw_info->serial_number);
	78	sdi->driver = &lecroy_xstream_driver_info;
	79	sdi->inst_type = SR_INST_SCPI;
	80	sdi->conn = scpi;
	81
	82	sr_scpi_hw_info_free(hw_info);
	83	hw_info = NULL;
	84
	85	devc = g_malloc0(sizeof(struct dev_context));
	86	sdi->priv = devc;
	87
	88	if (lecroy_xstream_init_device(sdi) != SR_OK)
	89	goto fail;
	90
	91	return sdi;
	92
	93	fail:
	94	sr_scpi_hw_info_free(hw_info);
	95	sr_dev_inst_free(sdi);
	96	g_free(devc);
	97
	98	return NULL;
	99	}
	100
	101	static GSList scan(struct sr_dev_driver di, GSList *options)
	102	{
	103	return sr_scpi_scan(di->context, options, probe_device);
	104	}
	105
	106	static void clear_helper(struct dev_context *devc)
	107	{
	108	lecroy_xstream_state_free(devc->model_state);
	109	g_free(devc->analog_groups);
	110	}
	111
	112	static int dev_clear(const struct sr_dev_driver *di)
	113	{
	114	return std_dev_clear_with_callback(di, (std_dev_clear_callback)clear_helper);
	115	}
	116
	117	static int dev_open(struct sr_dev_inst *sdi)
	118	{
	119	if (sr_scpi_open(sdi->conn) != SR_OK)
	120	return SR_ERR;
	121
	122	if (lecroy_xstream_state_get(sdi) != SR_OK)
	123	return SR_ERR;
	124
	125	return SR_OK;
	126	}
	127
	128	static int dev_close(struct sr_dev_inst *sdi)
	129	{
	130	return sr_scpi_close(sdi->conn);
	131	}
	132
	133	static int config_get(uint32_t key, GVariant **data,
	134	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	135	{
	136	int idx;
	137	struct dev_context *devc;
	138	const struct scope_config *model;
	139	struct scope_state *state;
	140
	141	if (!sdi)
	142	return SR_ERR_ARG;
	143
	144	devc = sdi->priv;
	145
	146	model = devc->model_config;
	147	state = devc->model_state;
	148	*data = NULL;
	149
	150	switch (key) {
	151	case SR_CONF_NUM_HDIV:
	152	*data = g_variant_new_int32(model->num_xdivs);
	153	break;
	154	case SR_CONF_TIMEBASE:
	155	*data = g_variant_new("(tt)",
	156	(*model->timebases)[state->timebase][0],
	157	(*model->timebases)[state->timebase][1]);
	158	break;
	159	case SR_CONF_NUM_VDIV:
	160	if (std_cg_idx(cg, devc->analog_groups, model->analog_channels) < 0)
	161	return SR_ERR_ARG;
	162	*data = g_variant_new_int32(model->num_ydivs);
	163	break;
	164	case SR_CONF_VDIV:
	165	if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
	166	return SR_ERR_ARG;
	167	*data = g_variant_new("(tt)",
	168	(*model->vdivs)[state->analog_channels[idx].vdiv][0],
	169	(*model->vdivs)[state->analog_channels[idx].vdiv][1]);
	170	break;
	171	case SR_CONF_TRIGGER_SOURCE:
	172	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	173	break;
	174	case SR_CONF_TRIGGER_SLOPE:
	175	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	176	break;
	177	case SR_CONF_HORIZ_TRIGGERPOS:
	178	*data = g_variant_new_double(state->horiz_triggerpos);
	179	break;
	180	case SR_CONF_COUPLING:
	181	if ((idx = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
	182	return SR_ERR_ARG;
	183	data = g_variant_new_string((model->coupling_options)[state->analog_channels[idx].coupling]);
	184	break;
	185	case SR_CONF_SAMPLERATE:
	186	*data = g_variant_new_uint64(state->sample_rate);
	187	break;
	188	case SR_CONF_ENABLED:
	189	*data = g_variant_new_boolean(FALSE);
	190	break;
	191	default:
	192	return SR_ERR_NA;
	193	}
	194
	195	return SR_OK;
	196	}
	197
	198	static int config_set(uint32_t key, GVariant *data,
	199	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	200	{
	201	int ret, idx, j;
	202	char command[MAX_COMMAND_SIZE];
	203	struct dev_context *devc;
	204	const struct scope_config *model;
	205	struct scope_state *state;
	206	double tmp_d;
	207	gboolean update_sample_rate;
	208
	209	if (!sdi)
	210	return SR_ERR_ARG;
	211
	212	devc = sdi->priv;
	213
	214	model = devc->model_config;
	215	state = devc->model_state;
	216	update_sample_rate = FALSE;
	217
	218	ret = SR_ERR_NA;
	219
	220	switch (key) {
	221	case SR_CONF_LIMIT_FRAMES:
	222	devc->frame_limit = g_variant_get_uint64(data);
	223	ret = SR_OK;
	224	break;
	225	case SR_CONF_TRIGGER_SOURCE:
	226	if ((idx = std_str_idx(data, *model->trigger_sources, model->num_trigger_sources)) < 0)
	227	return SR_ERR_ARG;
	228	state->trigger_source = idx;
	229	g_snprintf(command, sizeof(command),
	230	"TRIG_SELECT EDGE,SR,%s", (*model->trigger_sources)[idx]);
	231	ret = sr_scpi_send(sdi->conn, command);
	232	break;
	233	case SR_CONF_VDIV:
	234	if ((idx = std_u64_tuple_idx(data, *model->vdivs, model->num_vdivs)) < 0)
	235	return SR_ERR_ARG;
	236	if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
	237	return SR_ERR_ARG;
	238	state->analog_channels[j].vdiv = idx;
	239	g_snprintf(command, sizeof(command),
	240	"C%d:VDIV %E", j + 1, (float) (model->vdivs)[idx][0] / (model->vdivs)[idx][1]);
	241	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\| sr_scpi_get_opc(sdi->conn) != SR_OK)
	242	return SR_ERR;
	243	ret = SR_OK;
	244	break;
	245	case SR_CONF_TIMEBASE:
	246	if ((idx = std_u64_tuple_idx(data, *model->timebases, model->num_timebases)) < 0)
	247	return SR_ERR_ARG;
	248	state->timebase = idx;
	249	g_snprintf(command, sizeof(command),
	250	"TIME_DIV %E", (float) (model->timebases)[idx][0] / (model->timebases)[idx][1]);
	251	ret = sr_scpi_send(sdi->conn, command);
	252	update_sample_rate = TRUE;
	253	break;
	254	case SR_CONF_HORIZ_TRIGGERPOS:
	255	tmp_d = g_variant_get_double(data);
	256
	257	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	258	return SR_ERR;
	259
	260	state->horiz_triggerpos = tmp_d;
	261	tmp_d = -(tmp_d - 0.5) *
	262	((double)(*model->timebases)[state->timebase][0] /
	263	(*model->timebases)[state->timebase][1])
	264	* model->num_xdivs;
	265
	266	g_snprintf(command, sizeof(command), "TRIG POS %e S", tmp_d);
	267
	268	ret = sr_scpi_send(sdi->conn, command);
	269	break;
	270	case SR_CONF_TRIGGER_SLOPE:
	271	if ((idx = std_str_idx(data, *model->trigger_slopes, model->num_trigger_slopes)) < 0)
	272	return SR_ERR_ARG;
	273	state->trigger_slope = idx;
	274	g_snprintf(command, sizeof(command),
	275	"%s:TRIG_SLOPE %s", (*model->trigger_sources)[state->trigger_source],
	276	(*model->trigger_slopes)[idx]);
	277	ret = sr_scpi_send(sdi->conn, command);
	278	break;
	279	case SR_CONF_COUPLING:
	280	if ((idx = std_str_idx(data, *model->coupling_options, model->num_coupling_options)) < 0)
	281	return SR_ERR_ARG;
	282	if ((j = std_cg_idx(cg, devc->analog_groups, model->analog_channels)) < 0)
	283	return SR_ERR_ARG;
	284	state->analog_channels[j].coupling = idx;
	285	g_snprintf(command, sizeof(command), "C%d:COUPLING %s",
	286	j + 1, (*model->coupling_options)[idx]);
	287	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\| sr_scpi_get_opc(sdi->conn) != SR_OK)
	288	return SR_ERR;
	289	ret = SR_OK;
	290	break;
	291	default:
	292	ret = SR_ERR_NA;
	293	break;
	294	}
	295
	296	if (ret == SR_OK)
	297	ret = sr_scpi_get_opc(sdi->conn);
	298
	299	if (ret == SR_OK && update_sample_rate)
	300	ret = lecroy_xstream_update_sample_rate(sdi);
	301
	302	return ret;
	303	}
	304
	305	static int config_list(uint32_t key, GVariant **data,
	306	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	307	{
	308	struct dev_context *devc;
	309	const struct scope_config *model;
	310
	311	devc = (sdi) ? sdi->priv : NULL;
	312	model = (devc) ? devc->model_config : NULL;
	313
	314	switch (key) {
	315	case SR_CONF_SCAN_OPTIONS:
	316	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, NULL, NULL);
	317	case SR_CONF_DEVICE_OPTIONS:
	318	if (!cg)
	319	return STD_CONFIG_LIST(key, data, sdi, cg, NULL, drvopts, devopts);
	320	*data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg_analog));
	321	break;
	322	case SR_CONF_COUPLING:
	323	data = g_variant_new_strv(model->coupling_options, model->num_coupling_options);
	324	break;
	325	case SR_CONF_TRIGGER_SOURCE:
	326	if (!model)
	327	return SR_ERR_ARG;
	328	data = g_variant_new_strv(model->trigger_sources, model->num_trigger_sources);
	329	break;
	330	case SR_CONF_TRIGGER_SLOPE:
	331	if (!model)
	332	return SR_ERR_ARG;
	333	data = g_variant_new_strv(model->trigger_slopes, model->num_trigger_slopes);
	334	break;
	335	case SR_CONF_TIMEBASE:
	336	if (!model)
	337	return SR_ERR_ARG;
	338	data = std_gvar_tuple_array(model->timebases, model->num_timebases);
	339	break;
	340	case SR_CONF_VDIV:
	341	if (!model)
	342	return SR_ERR_ARG;
	343	data = std_gvar_tuple_array(model->vdivs, model->num_vdivs);
	344	break;
	345	default:
	346	return SR_ERR_NA;
	347	}
	348
	349	return SR_OK;
	350	}
	351
	352	SR_PRIV int lecroy_xstream_request_data(const struct sr_dev_inst *sdi)
	353	{
	354	char command[MAX_COMMAND_SIZE];
	355	struct sr_channel *ch;
	356	struct dev_context *devc;
	357
	358	devc = sdi->priv;
	359	ch = devc->current_channel->data;
	360
	361	if (ch->type != SR_CHANNEL_ANALOG)
	362	return SR_ERR;
	363
	364	g_snprintf(command, sizeof(command), "C%d:WAVEFORM?", ch->index + 1);
	365	return sr_scpi_send(sdi->conn, command);
	366	}
	367
	368	static int setup_channels(const struct sr_dev_inst *sdi)
	369	{
	370	GSList *l;
	371	gboolean setup_changed;
	372	char command[MAX_COMMAND_SIZE];
	373	struct scope_state *state;
	374	struct sr_channel *ch;
	375	struct dev_context *devc;
	376	struct sr_scpi_dev_inst *scpi;
	377
	378	devc = sdi->priv;
	379	scpi = sdi->conn;
	380	state = devc->model_state;
	381	setup_changed = FALSE;
	382
	383	for (l = sdi->channels; l; l = l->next) {
	384	ch = l->data;
	385	switch (ch->type) {
	386	case SR_CHANNEL_ANALOG:
	387	if (ch->enabled == state->analog_channels[ch->index].state)
	388	break;
	389	g_snprintf(command, sizeof(command), "C%d:TRACE %s",
	390	ch->index + 1, ch->enabled ? "ON" : "OFF");
	391
	392	if (sr_scpi_send(scpi, command) != SR_OK)
	393	return SR_ERR;
	394
	395	state->analog_channels[ch->index].state = ch->enabled;
	396	setup_changed = TRUE;
	397	break;
	398	default:
	399	return SR_ERR;
	400	}
	401	}
	402
	403	if (setup_changed && lecroy_xstream_update_sample_rate(sdi) != SR_OK)
	404	return SR_ERR;
	405
	406	return SR_OK;
	407	}
	408
	409	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	410	{
	411	GSList *l;
	412	struct sr_channel *ch;
	413	struct dev_context *devc;
	414	int ret;
	415	struct sr_scpi_dev_inst *scpi;
	416
	417	devc = sdi->priv;
	418	scpi = sdi->conn;
	419
	420	/* Preset empty results. */
	421	g_slist_free(devc->enabled_channels);
	422	devc->enabled_channels = NULL;
	423
	424	/*
	425	* Contruct the list of enabled channels. Determine the highest
	426	* number of digital pods involved in the acquisition.
	427	*/
	428
	429	for (l = sdi->channels; l; l = l->next) {
	430	ch = l->data;
	431	if (!ch->enabled)
	432	continue;
	433	/* Only add a single digital channel per group (pod). */
	434	devc->enabled_channels = g_slist_append(
	435	devc->enabled_channels, ch);
	436	}
	437
	438	if (!devc->enabled_channels)
	439	return SR_ERR;
	440
	441	/*
	442	* Configure the analog channels and the
	443	* corresponding digital pods.
	444	*/
	445	if (setup_channels(sdi) != SR_OK) {
	446	sr_err("Failed to setup channel configuration!");
	447	ret = SR_ERR;
	448	goto free_enabled;
	449	}
	450
	451	/*
	452	* Start acquisition on the first enabled channel. The
	453	* receive routine will continue driving the acquisition.
	454	*/
	455	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
	456	lecroy_xstream_receive_data, (void *)sdi);
	457
	458	std_session_send_df_header(sdi);
	459
	460	devc->current_channel = devc->enabled_channels;
	461
	462	return lecroy_xstream_request_data(sdi);
	463
	464	free_enabled:
	465	g_slist_free(devc->enabled_channels);
	466	devc->enabled_channels = NULL;
	467
	468	return ret;
	469	}
	470
	471	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	472	{
	473	struct dev_context *devc;
	474	struct sr_scpi_dev_inst *scpi;
	475
	476	std_session_send_df_end(sdi);
	477
	478	devc = sdi->priv;
	479
	480	devc->num_frames = 0;
	481	g_slist_free(devc->enabled_channels);
	482	devc->enabled_channels = NULL;
	483	scpi = sdi->conn;
	484	sr_scpi_source_remove(sdi->session, scpi);
	485
	486	return SR_OK;
	487	}
	488
	489	static struct sr_dev_driver lecroy_xstream_driver_info = {
	490	.name = "lecroy-xstream",
	491	.longname = "LeCroy X-Stream",
	492	.api_version = 1,
	493	.init = std_init,
	494	.cleanup = std_cleanup,
	495	.scan = scan,
	496	.dev_list = std_dev_list,
	497	.dev_clear = dev_clear,
	498	.config_get = config_get,
	499	.config_set = config_set,
	500	.config_list = config_list,
	501	.dev_open = dev_open,
	502	.dev_close = dev_close,
	503	.dev_acquisition_start = dev_acquisition_start,
	504	.dev_acquisition_stop = dev_acquisition_stop,
	505	.context = NULL,
	506	};
	507	SR_REGISTER_DEV_DRIVER(lecroy_xstream_driver_info);