[libsigrok.git] / src / hardware / hameg-hmo / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.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 <stdlib.h>
#include "scpi.h"
#include "protocol.h"

#define SERIALCOMM "115200/8n1/flow=1"

SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;

static const char *manufacturers[] = {
	"HAMEG",
	"Rohde&Schwarz",
};

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

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

enum {
	CG_INVALID = -1,
	CG_NONE,
	CG_ANALOG,
	CG_DIGITAL,
};

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

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 *hmo_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 = &hameg_hmo_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 (hmo_init_device(sdi) != SR_OK)
		goto fail;

	return sdi;

fail:
	if (hw_info)
		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, hmo_probe_serial_device);
}

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

	devc = priv;

	hmo_scope_state_free(devc->model_state);

	g_free(devc->analog_groups);
	g_free(devc->digital_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 (hmo_scope_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 check_channel_group(struct dev_context *devc,
			     const struct sr_channel_group *cg)
{
	unsigned int i;
	const struct scope_config *model;

	model = devc->model_config;

	if (!cg)
		return CG_NONE;

	for (i = 0; i < model->analog_channels; i++)
		if (cg == devc->analog_groups[i])
			return CG_ANALOG;

	for (i = 0; i < model->digital_pods; i++)
		if (cg == devc->digital_groups[i])
			return CG_DIGITAL;

	sr_err("Invalid channel group specified.");

	return CG_INVALID;
}

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

	if (!sdi || !(devc = sdi->priv))
		return SR_ERR_ARG;

	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
		return SR_ERR;

	ret = SR_ERR_NA;
	model = devc->model_config;
	state = devc->model_state;

	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][0],
				      (*model->timebases)[state->timebase][1]);
		ret = SR_OK;
		break;
	case SR_CONF_NUM_VDIV:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type == CG_ANALOG) {
			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;
			}

		} else {
			ret = SR_ERR_NA;
		}
		break;
	case SR_CONF_VDIV:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type == CG_ANALOG) {
			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][0],
						      (*model->vdivs)[state->analog_channels[i].vdiv][1]);
				ret = SR_OK;
				break;
			}

		} else {
			ret = SR_ERR_NA;
		}
		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:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		} else if (cg_type == CG_ANALOG) {
			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;
			}

		} else {
			ret = SR_ERR_NA;
		}
		break;
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(state->sample_rate);
		ret = SR_OK;
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static GVariant *build_tuples(const uint64_t (*array)[][2], 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][0]);
		rational[1] = g_variant_new_uint64((*array)[i][1]);

		/* 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, cg_type;
	unsigned int i, j;
	char command[MAX_COMMAND_SIZE], float_str[30];
	struct dev_context *devc;
	const struct scope_config *model;
	struct scope_state *state;
	const char *tmp;
	uint64_t p, q;
	double tmp_d;
	gboolean update_sample_rate;

	if (!sdi || !(devc = sdi->priv))
		return SR_ERR_ARG;

	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
		return SR_ERR;

	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),
				   (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
				   (*model->trigger_sources)[i]);

			ret = sr_scpi_send(sdi->conn, command);
			break;
		}
		break;
	case SR_CONF_VDIV:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		}

		g_variant_get(data, "(tt)", &p, &q);

		for (i = 0; i < model->num_vdivs; i++) {
			if (p != (*model->vdivs)[i][0] ||
			    q != (*model->vdivs)[i][1])
				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_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
				g_snprintf(command, sizeof(command),
					   (*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
					   j, float_str);

				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][0] ||
			    q != (*model->timebases)[i][1])
				continue;
			state->timebase = i;
			g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
			g_snprintf(command, sizeof(command),
				   (*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
				   float_str);

			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][0] /
			(*model->timebases)[state->timebase][1])
			 * model->num_xdivs;

		g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
		g_snprintf(command, sizeof(command),
			   (*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
			   float_str);

		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),
				   (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
				   (*model->trigger_slopes)[i]);

			ret = sr_scpi_send(sdi->conn, command);
			break;
		}
		break;
	case SR_CONF_COUPLING:
		if (cg_type == CG_NONE) {
			sr_err("No channel group specified.");
			return SR_ERR_CHANNEL_GROUP;
		}

		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),
					   (*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
					   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 = hmo_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)
{
	int cg_type = CG_NONE;
	struct dev_context *devc = NULL;
	const struct scope_config *model = NULL;

	if (sdi && (devc = sdi->priv)) {
		if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
			return SR_ERR;

		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_type == CG_NONE) {
			if (model)
				*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					model->devopts, model->num_devopts, sizeof(uint32_t));
			else
				*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		} else if (cg_type == CG_ANALOG) {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				model->analog_devopts, model->num_analog_devopts,
				sizeof(uint32_t));
		} else {
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				NULL, 0, sizeof(uint32_t));
		}
		break;
	case SR_CONF_COUPLING:
		if (cg_type == CG_NONE)
			return SR_ERR_CHANNEL_GROUP;
		*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 (cg_type == CG_NONE)
			return SR_ERR_CHANNEL_GROUP;
		*data = build_tuples(model->vdivs, model->num_vdivs);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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

	devc = sdi->priv;
	model = devc->model_config;

	ch = devc->current_channel->data;

	switch (ch->type) {
	case SR_CHANNEL_ANALOG:
		g_snprintf(command, sizeof(command),
			   (*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
			   ch->index + 1);
		break;
	case SR_CHANNEL_LOGIC:
		g_snprintf(command, sizeof(command),
			   (*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
			   ch->index < 8 ? 1 : 2);
		break;
	default:
		sr_err("Invalid channel type.");
		break;
	}

	return sr_scpi_send(sdi->conn, command);
}

static int hmo_check_channels(GSList *channels)
{
	GSList *l;
	struct sr_channel *ch;
	gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;

	enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;

	for (l = channels; l; l = l->next) {
		ch = l->data;
		switch (ch->type) {
		case SR_CHANNEL_ANALOG:
			if (ch->index == 2)
				enabled_chan3 = TRUE;
			else if (ch->index == 3)
				enabled_chan4 = TRUE;
			break;
		case SR_CHANNEL_LOGIC:
			if (ch->index < 8)
				enabled_pod1 = TRUE;
			else
				enabled_pod2 = TRUE;
			break;
		default:
			return SR_ERR;
		}
	}

	if ((enabled_pod1 && enabled_chan3) ||
	    (enabled_pod2 && enabled_chan4))
		return SR_ERR;

	return SR_OK;
}

static int hmo_setup_channels(const struct sr_dev_inst *sdi)
{
	GSList *l;
	unsigned int i;
	gboolean *pod_enabled, setup_changed;
	char command[MAX_COMMAND_SIZE];
	struct scope_state *state;
	const struct scope_config *model;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

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

	pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);

	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),
				   (*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
				   ch->index + 1, ch->enabled);

			if (sr_scpi_send(scpi, command) != SR_OK)
				return SR_ERR;
			state->analog_channels[ch->index].state = ch->enabled;
			setup_changed = TRUE;
			break;
		case SR_CHANNEL_LOGIC:
			/*
			 * A digital POD needs to be enabled for every group of
			 * 8 channels.
			 */
			if (ch->enabled)
				pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;

			if (ch->enabled == state->digital_channels[ch->index])
				break;
			g_snprintf(command, sizeof(command),
				   (*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
				   ch->index, ch->enabled);

			if (sr_scpi_send(scpi, command) != SR_OK)
				return SR_ERR;

			state->digital_channels[ch->index] = ch->enabled;
			setup_changed = TRUE;
			break;
		default:
			return SR_ERR;
		}
	}

	for (i = 1; i <= model->digital_pods; i++) {
		if (state->digital_pods[i - 1] == pod_enabled[i - 1])
			continue;
		g_snprintf(command, sizeof(command),
			   (*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
			   i, pod_enabled[i - 1]);
		if (sr_scpi_send(scpi, command) != SR_OK)
			return SR_ERR;
		state->digital_pods[i - 1] = pod_enabled[i - 1];
		setup_changed = TRUE;
	}

	g_free(pod_enabled);

	if (setup_changed && hmo_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;
	gboolean digital_added;
	struct sr_channel *ch;
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;

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

	scpi = sdi->conn;
	devc = sdi->priv;
	digital_added = FALSE;

	g_slist_free(devc->enabled_channels);
	devc->enabled_channels = NULL;

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

	if (!devc->enabled_channels)
		return SR_ERR;

	if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
		sr_err("Invalid channel configuration specified!");
		return SR_ERR_NA;
	}

	if (hmo_setup_channels(sdi) != SR_OK) {
		sr_err("Failed to setup channel configuration!");
		return SR_ERR;
	}

	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
			hmo_receive_data, (void *)sdi);

	std_session_send_df_header(sdi, LOG_PREFIX);

	devc->current_channel = devc->enabled_channels;

	return hmo_request_data(sdi);
}

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, LOG_PREFIX);

	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;
}

SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
	.name = "hameg-hmo",
	.longname = "Hameg HMO",
	.api_version = 1,
	.init = 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,
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2013 poljar (Damir Jelić) <poljarinho@gmail.com>
	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	#define SERIALCOMM "115200/8n1/flow=1"
	26
	27	SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
	28
	29	static const char *manufacturers[] = {
	30	"HAMEG",
	31	"Rohde&Schwarz",
	32	};
	33
	34	static const uint32_t drvopts[] = {
	35	SR_CONF_OSCILLOSCOPE,
	36	};
	37
	38	static const uint32_t scanopts[] = {
	39	SR_CONF_CONN,
	40	SR_CONF_SERIALCOMM,
	41	};
	42
	43	enum {
	44	CG_INVALID = -1,
	45	CG_NONE,
	46	CG_ANALOG,
	47	CG_DIGITAL,
	48	};
	49
	50	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	51	{
	52	return std_init(sr_ctx, di, LOG_PREFIX);
	53	}
	54
	55	static int check_manufacturer(const char *manufacturer)
	56	{
	57	unsigned int i;
	58
	59	for (i = 0; i < ARRAY_SIZE(manufacturers); i++)
	60	if (!strcmp(manufacturer, manufacturers[i]))
	61	return SR_OK;
	62
	63	return SR_ERR;
	64	}
	65
	66	static struct sr_dev_inst hmo_probe_serial_device(struct sr_scpi_dev_inst scpi)
	67	{
	68	struct sr_dev_inst *sdi;
	69	struct dev_context *devc;
	70	struct sr_scpi_hw_info *hw_info;
	71
	72	sdi = NULL;
	73	devc = NULL;
	74	hw_info = NULL;
	75
	76	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	77	sr_info("Couldn't get IDN response.");
	78	goto fail;
	79	}
	80
	81	if (check_manufacturer(hw_info->manufacturer) != SR_OK)
	82	goto fail;
	83
	84	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	85	sdi->vendor = g_strdup(hw_info->manufacturer);
	86	sdi->model = g_strdup(hw_info->model);
	87	sdi->version = g_strdup(hw_info->firmware_version);
	88	sdi->serial_num = g_strdup(hw_info->serial_number);
	89	sdi->driver = &hameg_hmo_driver_info;
	90	sdi->inst_type = SR_INST_SCPI;
	91	sdi->conn = scpi;
	92
	93	sr_scpi_hw_info_free(hw_info);
	94	hw_info = NULL;
	95
	96	devc = g_malloc0(sizeof(struct dev_context));
	97
	98	sdi->priv = devc;
	99
	100	if (hmo_init_device(sdi) != SR_OK)
	101	goto fail;
	102
	103	return sdi;
	104
	105	fail:
	106	if (hw_info)
	107	sr_scpi_hw_info_free(hw_info);
	108	if (sdi)
	109	sr_dev_inst_free(sdi);
	110	g_free(devc);
	111
	112	return NULL;
	113	}
	114
	115	static GSList scan(struct sr_dev_driver di, GSList *options)
	116	{
	117	return sr_scpi_scan(di->context, options, hmo_probe_serial_device);
	118	}
	119
	120	static void clear_helper(void *priv)
	121	{
	122	struct dev_context *devc;
	123
	124	devc = priv;
	125
	126	hmo_scope_state_free(devc->model_state);
	127
	128	g_free(devc->analog_groups);
	129	g_free(devc->digital_groups);
	130
	131	g_free(devc);
	132	}
	133
	134	static int dev_clear(const struct sr_dev_driver *di)
	135	{
	136	return std_dev_clear(di, clear_helper);
	137	}
	138
	139	static int dev_open(struct sr_dev_inst *sdi)
	140	{
	141	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	142	return SR_ERR;
	143
	144	if (hmo_scope_state_get(sdi) != SR_OK)
	145	return SR_ERR;
	146
	147	sdi->status = SR_ST_ACTIVE;
	148
	149	return SR_OK;
	150	}
	151
	152	static int dev_close(struct sr_dev_inst *sdi)
	153	{
	154	if (sdi->status == SR_ST_INACTIVE)
	155	return SR_OK;
	156
	157	sr_scpi_close(sdi->conn);
	158
	159	sdi->status = SR_ST_INACTIVE;
	160
	161	return SR_OK;
	162	}
	163
	164	static int check_channel_group(struct dev_context *devc,
	165	const struct sr_channel_group *cg)
	166	{
	167	unsigned int i;
	168	const struct scope_config *model;
	169
	170	model = devc->model_config;
	171
	172	if (!cg)
	173	return CG_NONE;
	174
	175	for (i = 0; i < model->analog_channels; i++)
	176	if (cg == devc->analog_groups[i])
	177	return CG_ANALOG;
	178
	179	for (i = 0; i < model->digital_pods; i++)
	180	if (cg == devc->digital_groups[i])
	181	return CG_DIGITAL;
	182
	183	sr_err("Invalid channel group specified.");
	184
	185	return CG_INVALID;
	186	}
	187
	188	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	189	const struct sr_channel_group *cg)
	190	{
	191	int ret, cg_type;
	192	unsigned int i;
	193	struct dev_context *devc;
	194	const struct scope_config *model;
	195	struct scope_state *state;
	196
	197	if (!sdi \|\| !(devc = sdi->priv))
	198	return SR_ERR_ARG;
	199
	200	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	201	return SR_ERR;
	202
	203	ret = SR_ERR_NA;
	204	model = devc->model_config;
	205	state = devc->model_state;
	206
	207	switch (key) {
	208	case SR_CONF_NUM_HDIV:
	209	*data = g_variant_new_int32(model->num_xdivs);
	210	ret = SR_OK;
	211	break;
	212	case SR_CONF_TIMEBASE:
	213	data = g_variant_new("(tt)", (model->timebases)[state->timebase][0],
	214	(*model->timebases)[state->timebase][1]);
	215	ret = SR_OK;
	216	break;
	217	case SR_CONF_NUM_VDIV:
	218	if (cg_type == CG_NONE) {
	219	sr_err("No channel group specified.");
	220	return SR_ERR_CHANNEL_GROUP;
	221	} else if (cg_type == CG_ANALOG) {
	222	for (i = 0; i < model->analog_channels; i++) {
	223	if (cg != devc->analog_groups[i])
	224	continue;
	225	*data = g_variant_new_int32(model->num_ydivs);
	226	ret = SR_OK;
	227	break;
	228	}
	229
	230	} else {
	231	ret = SR_ERR_NA;
	232	}
	233	break;
	234	case SR_CONF_VDIV:
	235	if (cg_type == CG_NONE) {
	236	sr_err("No channel group specified.");
	237	return SR_ERR_CHANNEL_GROUP;
	238	} else if (cg_type == CG_ANALOG) {
	239	for (i = 0; i < model->analog_channels; i++) {
	240	if (cg != devc->analog_groups[i])
	241	continue;
	242	*data = g_variant_new("(tt)",
	243	(*model->vdivs)[state->analog_channels[i].vdiv][0],
	244	(*model->vdivs)[state->analog_channels[i].vdiv][1]);
	245	ret = SR_OK;
	246	break;
	247	}
	248
	249	} else {
	250	ret = SR_ERR_NA;
	251	}
	252	break;
	253	case SR_CONF_TRIGGER_SOURCE:
	254	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	255	ret = SR_OK;
	256	break;
	257	case SR_CONF_TRIGGER_SLOPE:
	258	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	259	ret = SR_OK;
	260	break;
	261	case SR_CONF_HORIZ_TRIGGERPOS:
	262	*data = g_variant_new_double(state->horiz_triggerpos);
	263	ret = SR_OK;
	264	break;
	265	case SR_CONF_COUPLING:
	266	if (cg_type == CG_NONE) {
	267	sr_err("No channel group specified.");
	268	return SR_ERR_CHANNEL_GROUP;
	269	} else if (cg_type == CG_ANALOG) {
	270	for (i = 0; i < model->analog_channels; i++) {
	271	if (cg != devc->analog_groups[i])
	272	continue;
	273	data = g_variant_new_string((model->coupling_options)[state->analog_channels[i].coupling]);
	274	ret = SR_OK;
	275	break;
	276	}
	277
	278	} else {
	279	ret = SR_ERR_NA;
	280	}
	281	break;
	282	case SR_CONF_SAMPLERATE:
	283	*data = g_variant_new_uint64(state->sample_rate);
	284	ret = SR_OK;
	285	break;
	286	default:
	287	ret = SR_ERR_NA;
	288	}
	289
	290	return ret;
	291	}
	292
	293	static GVariant build_tuples(const uint64_t (array)[][2], unsigned int n)
	294	{
	295	unsigned int i;
	296	GVariant *rational[2];
	297	GVariantBuilder gvb;
	298
	299	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	300
	301	for (i = 0; i < n; i++) {
	302	rational[0] = g_variant_new_uint64((*array)[i][0]);
	303	rational[1] = g_variant_new_uint64((*array)[i][1]);
	304
	305	/* FIXME: Valgrind reports a memory leak here. */
	306	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	307	}
	308
	309	return g_variant_builder_end(&gvb);
	310	}
	311
	312	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	313	const struct sr_channel_group *cg)
	314	{
	315	int ret, cg_type;
	316	unsigned int i, j;
	317	char command[MAX_COMMAND_SIZE], float_str[30];
	318	struct dev_context *devc;
	319	const struct scope_config *model;
	320	struct scope_state *state;
	321	const char *tmp;
	322	uint64_t p, q;
	323	double tmp_d;
	324	gboolean update_sample_rate;
	325
	326	if (!sdi \|\| !(devc = sdi->priv))
	327	return SR_ERR_ARG;
	328
	329	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	330	return SR_ERR;
	331
	332	model = devc->model_config;
	333	state = devc->model_state;
	334	update_sample_rate = FALSE;
	335
	336	ret = SR_ERR_NA;
	337
	338	switch (key) {
	339	case SR_CONF_LIMIT_FRAMES:
	340	devc->frame_limit = g_variant_get_uint64(data);
	341	ret = SR_OK;
	342	break;
	343	case SR_CONF_TRIGGER_SOURCE:
	344	tmp = g_variant_get_string(data, NULL);
	345	for (i = 0; (*model->trigger_sources)[i]; i++) {
	346	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	347	continue;
	348	state->trigger_source = i;
	349	g_snprintf(command, sizeof(command),
	350	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
	351	(*model->trigger_sources)[i]);
	352
	353	ret = sr_scpi_send(sdi->conn, command);
	354	break;
	355	}
	356	break;
	357	case SR_CONF_VDIV:
	358	if (cg_type == CG_NONE) {
	359	sr_err("No channel group specified.");
	360	return SR_ERR_CHANNEL_GROUP;
	361	}
	362
	363	g_variant_get(data, "(tt)", &p, &q);
	364
	365	for (i = 0; i < model->num_vdivs; i++) {
	366	if (p != (*model->vdivs)[i][0] \|\|
	367	q != (*model->vdivs)[i][1])
	368	continue;
	369	for (j = 1; j <= model->analog_channels; j++) {
	370	if (cg != devc->analog_groups[j - 1])
	371	continue;
	372	state->analog_channels[j - 1].vdiv = i;
	373	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	374	g_snprintf(command, sizeof(command),
	375	(*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
	376	j, float_str);
	377
	378	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	379	sr_scpi_get_opc(sdi->conn) != SR_OK)
	380	return SR_ERR;
	381
	382	break;
	383	}
	384
	385	ret = SR_OK;
	386	break;
	387	}
	388	break;
	389	case SR_CONF_TIMEBASE:
	390	g_variant_get(data, "(tt)", &p, &q);
	391
	392	for (i = 0; i < model->num_timebases; i++) {
	393	if (p != (*model->timebases)[i][0] \|\|
	394	q != (*model->timebases)[i][1])
	395	continue;
	396	state->timebase = i;
	397	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	398	g_snprintf(command, sizeof(command),
	399	(*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
	400	float_str);
	401
	402	ret = sr_scpi_send(sdi->conn, command);
	403	update_sample_rate = TRUE;
	404	break;
	405	}
	406	break;
	407	case SR_CONF_HORIZ_TRIGGERPOS:
	408	tmp_d = g_variant_get_double(data);
	409
	410	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	411	return SR_ERR;
	412
	413	state->horiz_triggerpos = tmp_d;
	414	tmp_d = -(tmp_d - 0.5) *
	415	((double) (*model->timebases)[state->timebase][0] /
	416	(*model->timebases)[state->timebase][1])
	417	* model->num_xdivs;
	418
	419	g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
	420	g_snprintf(command, sizeof(command),
	421	(*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
	422	float_str);
	423
	424	ret = sr_scpi_send(sdi->conn, command);
	425	break;
	426	case SR_CONF_TRIGGER_SLOPE:
	427	tmp = g_variant_get_string(data, NULL);
	428	for (i = 0; (*model->trigger_slopes)[i]; i++) {
	429	if (g_strcmp0(tmp, (*model->trigger_slopes)[i]) != 0)
	430	continue;
	431	state->trigger_slope = i;
	432	g_snprintf(command, sizeof(command),
	433	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
	434	(*model->trigger_slopes)[i]);
	435
	436	ret = sr_scpi_send(sdi->conn, command);
	437	break;
	438	}
	439	break;
	440	case SR_CONF_COUPLING:
	441	if (cg_type == CG_NONE) {
	442	sr_err("No channel group specified.");
	443	return SR_ERR_CHANNEL_GROUP;
	444	}
	445
	446	tmp = g_variant_get_string(data, NULL);
	447
	448	for (i = 0; (*model->coupling_options)[i]; i++) {
	449	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
	450	continue;
	451	for (j = 1; j <= model->analog_channels; j++) {
	452	if (cg != devc->analog_groups[j - 1])
	453	continue;
	454	state->analog_channels[j-1].coupling = i;
	455
	456	g_snprintf(command, sizeof(command),
	457	(*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
	458	j, tmp);
	459
	460	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	461	sr_scpi_get_opc(sdi->conn) != SR_OK)
	462	return SR_ERR;
	463	break;
	464	}
	465
	466	ret = SR_OK;
	467	break;
	468	}
	469	break;
	470	default:
	471	ret = SR_ERR_NA;
	472	break;
	473	}
	474
	475	if (ret == SR_OK)
	476	ret = sr_scpi_get_opc(sdi->conn);
	477
	478	if (ret == SR_OK && update_sample_rate)
	479	ret = hmo_update_sample_rate(sdi);
	480
	481	return ret;
	482	}
	483
	484	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	485	const struct sr_channel_group *cg)
	486	{
	487	int cg_type = CG_NONE;
	488	struct dev_context *devc = NULL;
	489	const struct scope_config *model = NULL;
	490
	491	if (sdi && (devc = sdi->priv)) {
	492	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	493	return SR_ERR;
	494
	495	model = devc->model_config;
	496	}
	497
	498	switch (key) {
	499	case SR_CONF_SCAN_OPTIONS:
	500	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	501	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	502	break;
	503	case SR_CONF_DEVICE_OPTIONS:
	504	if (cg_type == CG_NONE) {
	505	if (model)
	506	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	507	model->devopts, model->num_devopts, sizeof(uint32_t));
	508	else
	509	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	510	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	511	} else if (cg_type == CG_ANALOG) {
	512	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	513	model->analog_devopts, model->num_analog_devopts,
	514	sizeof(uint32_t));
	515	} else {
	516	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	517	NULL, 0, sizeof(uint32_t));
	518	}
	519	break;
	520	case SR_CONF_COUPLING:
	521	if (cg_type == CG_NONE)
	522	return SR_ERR_CHANNEL_GROUP;
	523	data = g_variant_new_strv(model->coupling_options,
	524	g_strv_length((char *)model->coupling_options));
	525	break;
	526	case SR_CONF_TRIGGER_SOURCE:
	527	if (!model)
	528	return SR_ERR_ARG;
	529	data = g_variant_new_strv(model->trigger_sources,
	530	g_strv_length((char *)model->trigger_sources));
	531	break;
	532	case SR_CONF_TRIGGER_SLOPE:
	533	if (!model)
	534	return SR_ERR_ARG;
	535	data = g_variant_new_strv(model->trigger_slopes,
	536	g_strv_length((char *)model->trigger_slopes));
	537	break;
	538	case SR_CONF_TIMEBASE:
	539	if (!model)
	540	return SR_ERR_ARG;
	541	*data = build_tuples(model->timebases, model->num_timebases);
	542	break;
	543	case SR_CONF_VDIV:
	544	if (cg_type == CG_NONE)
	545	return SR_ERR_CHANNEL_GROUP;
	546	*data = build_tuples(model->vdivs, model->num_vdivs);
	547	break;
	548	default:
	549	return SR_ERR_NA;
	550	}
	551
	552	return SR_OK;
	553	}
	554
	555	SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
	556	{
	557	char command[MAX_COMMAND_SIZE];
	558	struct sr_channel *ch;
	559	struct dev_context *devc;
	560	const struct scope_config *model;
	561
	562	devc = sdi->priv;
	563	model = devc->model_config;
	564
	565	ch = devc->current_channel->data;
	566
	567	switch (ch->type) {
	568	case SR_CHANNEL_ANALOG:
	569	g_snprintf(command, sizeof(command),
	570	(*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
	571	ch->index + 1);
	572	break;
	573	case SR_CHANNEL_LOGIC:
	574	g_snprintf(command, sizeof(command),
	575	(*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
	576	ch->index < 8 ? 1 : 2);
	577	break;
	578	default:
	579	sr_err("Invalid channel type.");
	580	break;
	581	}
	582
	583	return sr_scpi_send(sdi->conn, command);
	584	}
	585
	586	static int hmo_check_channels(GSList *channels)
	587	{
	588	GSList *l;
	589	struct sr_channel *ch;
	590	gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
	591
	592	enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
	593
	594	for (l = channels; l; l = l->next) {
	595	ch = l->data;
	596	switch (ch->type) {
	597	case SR_CHANNEL_ANALOG:
	598	if (ch->index == 2)
	599	enabled_chan3 = TRUE;
	600	else if (ch->index == 3)
	601	enabled_chan4 = TRUE;
	602	break;
	603	case SR_CHANNEL_LOGIC:
	604	if (ch->index < 8)
	605	enabled_pod1 = TRUE;
	606	else
	607	enabled_pod2 = TRUE;
	608	break;
	609	default:
	610	return SR_ERR;
	611	}
	612	}
	613
	614	if ((enabled_pod1 && enabled_chan3) \|\|
	615	(enabled_pod2 && enabled_chan4))
	616	return SR_ERR;
	617
	618	return SR_OK;
	619	}
	620
	621	static int hmo_setup_channels(const struct sr_dev_inst *sdi)
	622	{
	623	GSList *l;
	624	unsigned int i;
	625	gboolean *pod_enabled, setup_changed;
	626	char command[MAX_COMMAND_SIZE];
	627	struct scope_state *state;
	628	const struct scope_config *model;
	629	struct sr_channel *ch;
	630	struct dev_context *devc;
	631	struct sr_scpi_dev_inst *scpi;
	632
	633	devc = sdi->priv;
	634	scpi = sdi->conn;
	635	state = devc->model_state;
	636	model = devc->model_config;
	637	setup_changed = FALSE;
	638
	639	pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
	640
	641	for (l = sdi->channels; l; l = l->next) {
	642	ch = l->data;
	643	switch (ch->type) {
	644	case SR_CHANNEL_ANALOG:
	645	if (ch->enabled == state->analog_channels[ch->index].state)
	646	break;
	647	g_snprintf(command, sizeof(command),
	648	(*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
	649	ch->index + 1, ch->enabled);
	650
	651	if (sr_scpi_send(scpi, command) != SR_OK)
	652	return SR_ERR;
	653	state->analog_channels[ch->index].state = ch->enabled;
	654	setup_changed = TRUE;
	655	break;
	656	case SR_CHANNEL_LOGIC:
	657	/*
	658	* A digital POD needs to be enabled for every group of
	659	* 8 channels.
	660	*/
	661	if (ch->enabled)
	662	pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;
	663
	664	if (ch->enabled == state->digital_channels[ch->index])
	665	break;
	666	g_snprintf(command, sizeof(command),
	667	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
	668	ch->index, ch->enabled);
	669
	670	if (sr_scpi_send(scpi, command) != SR_OK)
	671	return SR_ERR;
	672
	673	state->digital_channels[ch->index] = ch->enabled;
	674	setup_changed = TRUE;
	675	break;
	676	default:
	677	return SR_ERR;
	678	}
	679	}
	680
	681	for (i = 1; i <= model->digital_pods; i++) {
	682	if (state->digital_pods[i - 1] == pod_enabled[i - 1])
	683	continue;
	684	g_snprintf(command, sizeof(command),
	685	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
	686	i, pod_enabled[i - 1]);
	687	if (sr_scpi_send(scpi, command) != SR_OK)
	688	return SR_ERR;
	689	state->digital_pods[i - 1] = pod_enabled[i - 1];
	690	setup_changed = TRUE;
	691	}
	692
	693	g_free(pod_enabled);
	694
	695	if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
	696	return SR_ERR;
	697
	698	return SR_OK;
	699	}
	700
	701	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	702	{
	703	GSList *l;
	704	gboolean digital_added;
	705	struct sr_channel *ch;
	706	struct dev_context *devc;
	707	struct sr_scpi_dev_inst *scpi;
	708
	709	if (sdi->status != SR_ST_ACTIVE)
	710	return SR_ERR_DEV_CLOSED;
	711
	712	scpi = sdi->conn;
	713	devc = sdi->priv;
	714	digital_added = FALSE;
	715
	716	g_slist_free(devc->enabled_channels);
	717	devc->enabled_channels = NULL;
	718
	719	for (l = sdi->channels; l; l = l->next) {
	720	ch = l->data;
	721	if (!ch->enabled)
	722	continue;
	723	/* Only add a single digital channel. */
	724	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	725	devc->enabled_channels = g_slist_append(
	726	devc->enabled_channels, ch);
	727	if (ch->type == SR_CHANNEL_LOGIC)
	728	digital_added = TRUE;
	729	}
	730	}
	731
	732	if (!devc->enabled_channels)
	733	return SR_ERR;
	734
	735	if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
	736	sr_err("Invalid channel configuration specified!");
	737	return SR_ERR_NA;
	738	}
	739
	740	if (hmo_setup_channels(sdi) != SR_OK) {
	741	sr_err("Failed to setup channel configuration!");
	742	return SR_ERR;
	743	}
	744
	745	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
	746	hmo_receive_data, (void *)sdi);
	747
	748	std_session_send_df_header(sdi, LOG_PREFIX);
	749
	750	devc->current_channel = devc->enabled_channels;
	751
	752	return hmo_request_data(sdi);
	753	}
	754
	755	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	756	{
	757	struct dev_context *devc;
	758	struct sr_scpi_dev_inst *scpi;
	759
	760	std_session_send_df_end(sdi, LOG_PREFIX);
	761
	762	if (sdi->status != SR_ST_ACTIVE)
	763	return SR_ERR_DEV_CLOSED;
	764
	765	devc = sdi->priv;
	766
	767	devc->num_frames = 0;
	768	g_slist_free(devc->enabled_channels);
	769	devc->enabled_channels = NULL;
	770	scpi = sdi->conn;
	771	sr_scpi_source_remove(sdi->session, scpi);
	772
	773	return SR_OK;
	774	}
	775
	776	SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
	777	.name = "hameg-hmo",
	778	.longname = "Hameg HMO",
	779	.api_version = 1,
	780	.init = init,
	781	.cleanup = std_cleanup,
	782	.scan = scan,
	783	.dev_list = std_dev_list,
	784	.dev_clear = dev_clear,
	785	.config_get = config_get,
	786	.config_set = config_set,
	787	.config_list = config_list,
	788	.dev_open = dev_open,
	789	.dev_close = dev_close,
	790	.dev_acquisition_start = dev_acquisition_start,
	791	.dev_acquisition_stop = dev_acquisition_stop,
	792	.context = NULL,
	793	};