[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 <stdlib.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",
};

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->status = SR_ST_ACTIVE;
	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;

	sr_scpi_close(sdi->conn);

	sdi->status = SR_ST_INACTIVE;

	return sdi;

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

	return NULL;
}

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

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

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 cleanup(const struct sr_dev_driver *di)
{
	dev_clear(di);

	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);

		if (!tmp || !(tmp[0] == 'f' || tmp[0] == 'r'))
			return SR_ERR_ARG;

		state->trigger_slope = (tmp[0] == 'r') ? 0 : 1;

		g_snprintf(command, sizeof(command),
			   (*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
			   (state->trigger_slope == 0) ? "POS" : "NEG");

		ret = sr_scpi_send(sdi->conn, command);
		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, void *cb_data)
{
	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);

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

	devc->current_channel = devc->enabled_channels;

	return hmo_request_data(sdi);
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;
	struct sr_datafeed_packet packet;

	(void)cb_data;

	packet.type = SR_DF_END;
	packet.payload = NULL;
	sr_session_send(sdi, &packet);

	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 = cleanup,
	.scan = scan,
	.dev_list = dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 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 <stdlib.h>
	21	#include "protocol.h"
	22
	23	#define SERIALCOMM "115200/8n1/flow=1"
	24
	25	SR_PRIV struct sr_dev_driver hameg_hmo_driver_info;
	26
	27	static const char *manufacturers[] = {
	28	"HAMEG",
	29	};
	30
	31	static const uint32_t drvopts[] = {
	32	SR_CONF_OSCILLOSCOPE,
	33	};
	34
	35	static const uint32_t scanopts[] = {
	36	SR_CONF_CONN,
	37	SR_CONF_SERIALCOMM,
	38	};
	39
	40	enum {
	41	CG_INVALID = -1,
	42	CG_NONE,
	43	CG_ANALOG,
	44	CG_DIGITAL,
	45	};
	46
	47	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	48	{
	49	return std_init(sr_ctx, di, LOG_PREFIX);
	50	}
	51
	52	static int check_manufacturer(const char *manufacturer)
	53	{
	54	unsigned int i;
	55
	56	for (i = 0; i < ARRAY_SIZE(manufacturers); ++i)
	57	if (!strcmp(manufacturer, manufacturers[i]))
	58	return SR_OK;
	59
	60	return SR_ERR;
	61	}
	62
	63	static struct sr_dev_inst hmo_probe_serial_device(struct sr_scpi_dev_inst scpi)
	64	{
	65	struct sr_dev_inst *sdi;
	66	struct dev_context *devc;
	67	struct sr_scpi_hw_info *hw_info;
	68
	69	sdi = NULL;
	70	devc = NULL;
	71	hw_info = NULL;
	72
	73	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	74	sr_info("Couldn't get IDN response.");
	75	goto fail;
	76	}
	77
	78	if (check_manufacturer(hw_info->manufacturer) != SR_OK)
	79	goto fail;
	80
	81	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	82	sdi->status = SR_ST_ACTIVE;
	83	sdi->vendor = g_strdup(hw_info->manufacturer);
	84	sdi->model = g_strdup(hw_info->model);
	85	sdi->version = g_strdup(hw_info->firmware_version);
	86	sdi->serial_num = g_strdup(hw_info->serial_number);
	87	sdi->driver = &hameg_hmo_driver_info;
	88	sdi->inst_type = SR_INST_SCPI;
	89	sdi->conn = scpi;
	90
	91	sr_scpi_hw_info_free(hw_info);
	92	hw_info = NULL;
	93
	94	devc = g_malloc0(sizeof(struct dev_context));
	95
	96	sdi->priv = devc;
	97
	98	if (hmo_init_device(sdi) != SR_OK)
	99	goto fail;
	100
	101	sr_scpi_close(sdi->conn);
	102
	103	sdi->status = SR_ST_INACTIVE;
	104
	105	return sdi;
	106
	107	fail:
	108	if (hw_info)
	109	sr_scpi_hw_info_free(hw_info);
	110	if (sdi)
	111	sr_dev_inst_free(sdi);
	112	if (devc)
	113	g_free(devc);
	114
	115	return NULL;
	116	}
	117
	118	static GSList scan(struct sr_dev_driver di, GSList *options)
	119	{
	120	return sr_scpi_scan(di->priv, options, hmo_probe_serial_device);
	121	}
	122
	123	static GSList dev_list(const struct sr_dev_driver di)
	124	{
	125	return ((struct drv_context *)(di->priv))->instances;
	126	}
	127
	128	static void clear_helper(void *priv)
	129	{
	130	struct dev_context *devc;
	131
	132	devc = priv;
	133
	134	hmo_scope_state_free(devc->model_state);
	135
	136	g_free(devc->analog_groups);
	137	g_free(devc->digital_groups);
	138
	139	g_free(devc);
	140	}
	141
	142	static int dev_clear(const struct sr_dev_driver *di)
	143	{
	144	return std_dev_clear(di, clear_helper);
	145	}
	146
	147	static int dev_open(struct sr_dev_inst *sdi)
	148	{
	149	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	150	return SR_ERR;
	151
	152	if (hmo_scope_state_get(sdi) != SR_OK)
	153	return SR_ERR;
	154
	155	sdi->status = SR_ST_ACTIVE;
	156
	157	return SR_OK;
	158	}
	159
	160	static int dev_close(struct sr_dev_inst *sdi)
	161	{
	162	if (sdi->status == SR_ST_INACTIVE)
	163	return SR_OK;
	164
	165	sr_scpi_close(sdi->conn);
	166
	167	sdi->status = SR_ST_INACTIVE;
	168
	169	return SR_OK;
	170	}
	171
	172	static int cleanup(const struct sr_dev_driver *di)
	173	{
	174	dev_clear(di);
	175
	176	return SR_OK;
	177	}
	178
	179	static int check_channel_group(struct dev_context *devc,
	180	const struct sr_channel_group *cg)
	181	{
	182	unsigned int i;
	183	const struct scope_config *model;
	184
	185	model = devc->model_config;
	186
	187	if (!cg)
	188	return CG_NONE;
	189
	190	for (i = 0; i < model->analog_channels; ++i)
	191	if (cg == devc->analog_groups[i])
	192	return CG_ANALOG;
	193
	194	for (i = 0; i < model->digital_pods; ++i)
	195	if (cg == devc->digital_groups[i])
	196	return CG_DIGITAL;
	197
	198	sr_err("Invalid channel group specified.");
	199
	200	return CG_INVALID;
	201	}
	202
	203	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	204	const struct sr_channel_group *cg)
	205	{
	206	int ret, cg_type;
	207	unsigned int i;
	208	struct dev_context *devc;
	209	const struct scope_config *model;
	210	struct scope_state *state;
	211
	212	if (!sdi \|\| !(devc = sdi->priv))
	213	return SR_ERR_ARG;
	214
	215	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	216	return SR_ERR;
	217
	218	ret = SR_ERR_NA;
	219	model = devc->model_config;
	220	state = devc->model_state;
	221
	222	switch (key) {
	223	case SR_CONF_NUM_HDIV:
	224	*data = g_variant_new_int32(model->num_xdivs);
	225	ret = SR_OK;
	226	break;
	227	case SR_CONF_TIMEBASE:
	228	data = g_variant_new("(tt)", (model->timebases)[state->timebase][0],
	229	(*model->timebases)[state->timebase][1]);
	230	ret = SR_OK;
	231	break;
	232	case SR_CONF_NUM_VDIV:
	233	if (cg_type == CG_NONE) {
	234	sr_err("No channel group specified.");
	235	return SR_ERR_CHANNEL_GROUP;
	236	} else if (cg_type == CG_ANALOG) {
	237	for (i = 0; i < model->analog_channels; ++i) {
	238	if (cg != devc->analog_groups[i])
	239	continue;
	240	*data = g_variant_new_int32(model->num_ydivs);
	241	ret = SR_OK;
	242	break;
	243	}
	244
	245	} else {
	246	ret = SR_ERR_NA;
	247	}
	248	break;
	249	case SR_CONF_VDIV:
	250	if (cg_type == CG_NONE) {
	251	sr_err("No channel group specified.");
	252	return SR_ERR_CHANNEL_GROUP;
	253	} else if (cg_type == CG_ANALOG) {
	254	for (i = 0; i < model->analog_channels; ++i) {
	255	if (cg != devc->analog_groups[i])
	256	continue;
	257	*data = g_variant_new("(tt)",
	258	(*model->vdivs)[state->analog_channels[i].vdiv][0],
	259	(*model->vdivs)[state->analog_channels[i].vdiv][1]);
	260	ret = SR_OK;
	261	break;
	262	}
	263
	264	} else {
	265	ret = SR_ERR_NA;
	266	}
	267	break;
	268	case SR_CONF_TRIGGER_SOURCE:
	269	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	270	ret = SR_OK;
	271	break;
	272	case SR_CONF_TRIGGER_SLOPE:
	273	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	274	ret = SR_OK;
	275	break;
	276	case SR_CONF_HORIZ_TRIGGERPOS:
	277	*data = g_variant_new_double(state->horiz_triggerpos);
	278	ret = SR_OK;
	279	break;
	280	case SR_CONF_COUPLING:
	281	if (cg_type == CG_NONE) {
	282	sr_err("No channel group specified.");
	283	return SR_ERR_CHANNEL_GROUP;
	284	} else if (cg_type == CG_ANALOG) {
	285	for (i = 0; i < model->analog_channels; ++i) {
	286	if (cg != devc->analog_groups[i])
	287	continue;
	288	data = g_variant_new_string((model->coupling_options)[state->analog_channels[i].coupling]);
	289	ret = SR_OK;
	290	break;
	291	}
	292
	293	} else {
	294	ret = SR_ERR_NA;
	295	}
	296	break;
	297	case SR_CONF_SAMPLERATE:
	298	*data = g_variant_new_uint64(state->sample_rate);
	299	ret = SR_OK;
	300	break;
	301	default:
	302	ret = SR_ERR_NA;
	303	}
	304
	305	return ret;
	306	}
	307
	308	static GVariant build_tuples(const uint64_t (array)[][2], unsigned int n)
	309	{
	310	unsigned int i;
	311	GVariant *rational[2];
	312	GVariantBuilder gvb;
	313
	314	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	315
	316	for (i = 0; i < n; i++) {
	317	rational[0] = g_variant_new_uint64((*array)[i][0]);
	318	rational[1] = g_variant_new_uint64((*array)[i][1]);
	319
	320	/* FIXME: Valgrind reports a memory leak here. */
	321	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	322	}
	323
	324	return g_variant_builder_end(&gvb);
	325	}
	326
	327	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	328	const struct sr_channel_group *cg)
	329	{
	330	int ret, cg_type;
	331	unsigned int i, j;
	332	char command[MAX_COMMAND_SIZE], float_str[30];
	333	struct dev_context *devc;
	334	const struct scope_config *model;
	335	struct scope_state *state;
	336	const char *tmp;
	337	uint64_t p, q;
	338	double tmp_d;
	339	gboolean update_sample_rate;
	340
	341	if (!sdi \|\| !(devc = sdi->priv))
	342	return SR_ERR_ARG;
	343
	344	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	345	return SR_ERR;
	346
	347	model = devc->model_config;
	348	state = devc->model_state;
	349	update_sample_rate = FALSE;
	350
	351	ret = SR_ERR_NA;
	352
	353	switch (key) {
	354	case SR_CONF_LIMIT_FRAMES:
	355	devc->frame_limit = g_variant_get_uint64(data);
	356	ret = SR_OK;
	357	break;
	358	case SR_CONF_TRIGGER_SOURCE:
	359	tmp = g_variant_get_string(data, NULL);
	360	for (i = 0; (*model->trigger_sources)[i]; i++) {
	361	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	362	continue;
	363	state->trigger_source = i;
	364	g_snprintf(command, sizeof(command),
	365	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
	366	(*model->trigger_sources)[i]);
	367
	368	ret = sr_scpi_send(sdi->conn, command);
	369	break;
	370	}
	371	break;
	372	case SR_CONF_VDIV:
	373	if (cg_type == CG_NONE) {
	374	sr_err("No channel group specified.");
	375	return SR_ERR_CHANNEL_GROUP;
	376	}
	377
	378	g_variant_get(data, "(tt)", &p, &q);
	379
	380	for (i = 0; i < model->num_vdivs; i++) {
	381	if (p != (*model->vdivs)[i][0] \|\|
	382	q != (*model->vdivs)[i][1])
	383	continue;
	384	for (j = 1; j <= model->analog_channels; ++j) {
	385	if (cg != devc->analog_groups[j - 1])
	386	continue;
	387	state->analog_channels[j - 1].vdiv = i;
	388	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	389	g_snprintf(command, sizeof(command),
	390	(*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
	391	j, float_str);
	392
	393	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	394	sr_scpi_get_opc(sdi->conn) != SR_OK)
	395	return SR_ERR;
	396
	397	break;
	398	}
	399
	400	ret = SR_OK;
	401	break;
	402	}
	403	break;
	404	case SR_CONF_TIMEBASE:
	405	g_variant_get(data, "(tt)", &p, &q);
	406
	407	for (i = 0; i < model->num_timebases; i++) {
	408	if (p != (*model->timebases)[i][0] \|\|
	409	q != (*model->timebases)[i][1])
	410	continue;
	411	state->timebase = i;
	412	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	413	g_snprintf(command, sizeof(command),
	414	(*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
	415	float_str);
	416
	417	ret = sr_scpi_send(sdi->conn, command);
	418	update_sample_rate = TRUE;
	419	break;
	420	}
	421	break;
	422	case SR_CONF_HORIZ_TRIGGERPOS:
	423	tmp_d = g_variant_get_double(data);
	424
	425	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	426	return SR_ERR;
	427
	428	state->horiz_triggerpos = tmp_d;
	429	tmp_d = -(tmp_d - 0.5) *
	430	((double) (*model->timebases)[state->timebase][0] /
	431	(*model->timebases)[state->timebase][1])
	432	* model->num_xdivs;
	433
	434	g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
	435	g_snprintf(command, sizeof(command),
	436	(*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
	437	float_str);
	438
	439	ret = sr_scpi_send(sdi->conn, command);
	440	break;
	441	case SR_CONF_TRIGGER_SLOPE:
	442	tmp = g_variant_get_string(data, NULL);
	443
	444	if (!tmp \|\| !(tmp[0] == 'f' \|\| tmp[0] == 'r'))
	445	return SR_ERR_ARG;
	446
	447	state->trigger_slope = (tmp[0] == 'r') ? 0 : 1;
	448
	449	g_snprintf(command, sizeof(command),
	450	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
	451	(state->trigger_slope == 0) ? "POS" : "NEG");
	452
	453	ret = sr_scpi_send(sdi->conn, command);
	454	break;
	455	case SR_CONF_COUPLING:
	456	if (cg_type == CG_NONE) {
	457	sr_err("No channel group specified.");
	458	return SR_ERR_CHANNEL_GROUP;
	459	}
	460
	461	tmp = g_variant_get_string(data, NULL);
	462
	463	for (i = 0; (*model->coupling_options)[i]; i++) {
	464	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
	465	continue;
	466	for (j = 1; j <= model->analog_channels; ++j) {
	467	if (cg != devc->analog_groups[j - 1])
	468	continue;
	469	state->analog_channels[j-1].coupling = i;
	470
	471	g_snprintf(command, sizeof(command),
	472	(*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
	473	j, tmp);
	474
	475	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	476	sr_scpi_get_opc(sdi->conn) != SR_OK)
	477	return SR_ERR;
	478	break;
	479	}
	480
	481	ret = SR_OK;
	482	break;
	483	}
	484	break;
	485	default:
	486	ret = SR_ERR_NA;
	487	break;
	488	}
	489
	490	if (ret == SR_OK)
	491	ret = sr_scpi_get_opc(sdi->conn);
	492
	493	if (ret == SR_OK && update_sample_rate)
	494	ret = hmo_update_sample_rate(sdi);
	495
	496	return ret;
	497	}
	498
	499	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	500	const struct sr_channel_group *cg)
	501	{
	502	int cg_type = CG_NONE;
	503	struct dev_context *devc = NULL;
	504	const struct scope_config *model = NULL;
	505
	506	if (sdi && (devc = sdi->priv)) {
	507	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	508	return SR_ERR;
	509
	510	model = devc->model_config;
	511	}
	512
	513	switch (key) {
	514	case SR_CONF_SCAN_OPTIONS:
	515	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	516	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	517	break;
	518	case SR_CONF_DEVICE_OPTIONS:
	519	if (cg_type == CG_NONE) {
	520	if (model)
	521	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	522	model->devopts, model->num_devopts, sizeof(uint32_t));
	523	else
	524	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	525	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	526	} else if (cg_type == CG_ANALOG) {
	527	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	528	model->analog_devopts, model->num_analog_devopts,
	529	sizeof(uint32_t));
	530	} else {
	531	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	532	NULL, 0, sizeof(uint32_t));
	533	}
	534	break;
	535	case SR_CONF_COUPLING:
	536	if (cg_type == CG_NONE)
	537	return SR_ERR_CHANNEL_GROUP;
	538	data = g_variant_new_strv(model->coupling_options,
	539	g_strv_length((char *)model->coupling_options));
	540	break;
	541	case SR_CONF_TRIGGER_SOURCE:
	542	if (!model)
	543	return SR_ERR_ARG;
	544	data = g_variant_new_strv(model->trigger_sources,
	545	g_strv_length((char *)model->trigger_sources));
	546	break;
	547	case SR_CONF_TRIGGER_SLOPE:
	548	if (!model)
	549	return SR_ERR_ARG;
	550	data = g_variant_new_strv(model->trigger_slopes,
	551	g_strv_length((char *)model->trigger_slopes));
	552	break;
	553	case SR_CONF_TIMEBASE:
	554	if (!model)
	555	return SR_ERR_ARG;
	556	*data = build_tuples(model->timebases, model->num_timebases);
	557	break;
	558	case SR_CONF_VDIV:
	559	if (cg_type == CG_NONE)
	560	return SR_ERR_CHANNEL_GROUP;
	561	*data = build_tuples(model->vdivs, model->num_vdivs);
	562	break;
	563	default:
	564	return SR_ERR_NA;
	565	}
	566
	567	return SR_OK;
	568	}
	569
	570	SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
	571	{
	572	char command[MAX_COMMAND_SIZE];
	573	struct sr_channel *ch;
	574	struct dev_context *devc;
	575	const struct scope_config *model;
	576
	577	devc = sdi->priv;
	578	model = devc->model_config;
	579
	580	ch = devc->current_channel->data;
	581
	582	switch (ch->type) {
	583	case SR_CHANNEL_ANALOG:
	584	g_snprintf(command, sizeof(command),
	585	(*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
	586	ch->index + 1);
	587	break;
	588	case SR_CHANNEL_LOGIC:
	589	g_snprintf(command, sizeof(command),
	590	(*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
	591	ch->index < 8 ? 1 : 2);
	592	break;
	593	default:
	594	sr_err("Invalid channel type.");
	595	break;
	596	}
	597
	598	return sr_scpi_send(sdi->conn, command);
	599	}
	600
	601	static int hmo_check_channels(GSList *channels)
	602	{
	603	GSList *l;
	604	struct sr_channel *ch;
	605	gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
	606
	607	enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
	608
	609	for (l = channels; l; l = l->next) {
	610	ch = l->data;
	611	switch (ch->type) {
	612	case SR_CHANNEL_ANALOG:
	613	if (ch->index == 2)
	614	enabled_chan3 = TRUE;
	615	else if (ch->index == 3)
	616	enabled_chan4 = TRUE;
	617	break;
	618	case SR_CHANNEL_LOGIC:
	619	if (ch->index < 8)
	620	enabled_pod1 = TRUE;
	621	else
	622	enabled_pod2 = TRUE;
	623	break;
	624	default:
	625	return SR_ERR;
	626	}
	627	}
	628
	629	if ((enabled_pod1 && enabled_chan3) \|\|
	630	(enabled_pod2 && enabled_chan4))
	631	return SR_ERR;
	632
	633	return SR_OK;
	634	}
	635
	636	static int hmo_setup_channels(const struct sr_dev_inst *sdi)
	637	{
	638	GSList *l;
	639	unsigned int i;
	640	gboolean *pod_enabled, setup_changed;
	641	char command[MAX_COMMAND_SIZE];
	642	struct scope_state *state;
	643	const struct scope_config *model;
	644	struct sr_channel *ch;
	645	struct dev_context *devc;
	646	struct sr_scpi_dev_inst *scpi;
	647
	648	devc = sdi->priv;
	649	scpi = sdi->conn;
	650	state = devc->model_state;
	651	model = devc->model_config;
	652	setup_changed = FALSE;
	653
	654	pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
	655
	656	for (l = sdi->channels; l; l = l->next) {
	657	ch = l->data;
	658	switch (ch->type) {
	659	case SR_CHANNEL_ANALOG:
	660	if (ch->enabled == state->analog_channels[ch->index].state)
	661	break;
	662	g_snprintf(command, sizeof(command),
	663	(*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
	664	ch->index + 1, ch->enabled);
	665
	666	if (sr_scpi_send(scpi, command) != SR_OK)
	667	return SR_ERR;
	668	state->analog_channels[ch->index].state = ch->enabled;
	669	setup_changed = TRUE;
	670	break;
	671	case SR_CHANNEL_LOGIC:
	672	/*
	673	* A digital POD needs to be enabled for every group of
	674	* 8 channels.
	675	*/
	676	if (ch->enabled)
	677	pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;
	678
	679	if (ch->enabled == state->digital_channels[ch->index])
	680	break;
	681	g_snprintf(command, sizeof(command),
	682	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
	683	ch->index, ch->enabled);
	684
	685	if (sr_scpi_send(scpi, command) != SR_OK)
	686	return SR_ERR;
	687
	688	state->digital_channels[ch->index] = ch->enabled;
	689	setup_changed = TRUE;
	690	break;
	691	default:
	692	return SR_ERR;
	693	}
	694	}
	695
	696	for (i = 1; i <= model->digital_pods; ++i) {
	697	if (state->digital_pods[i - 1] == pod_enabled[i - 1])
	698	continue;
	699	g_snprintf(command, sizeof(command),
	700	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
	701	i, pod_enabled[i - 1]);
	702	if (sr_scpi_send(scpi, command) != SR_OK)
	703	return SR_ERR;
	704	state->digital_pods[i - 1] = pod_enabled[i - 1];
	705	setup_changed = TRUE;
	706	}
	707
	708	g_free(pod_enabled);
	709
	710	if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
	711	return SR_ERR;
	712
	713	return SR_OK;
	714	}
	715
	716	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	717	{
	718	GSList *l;
	719	gboolean digital_added;
	720	struct sr_channel *ch;
	721	struct dev_context *devc;
	722	struct sr_scpi_dev_inst *scpi;
	723
	724	if (sdi->status != SR_ST_ACTIVE)
	725	return SR_ERR_DEV_CLOSED;
	726
	727	scpi = sdi->conn;
	728	devc = sdi->priv;
	729	digital_added = FALSE;
	730
	731	g_slist_free(devc->enabled_channels);
	732	devc->enabled_channels = NULL;
	733
	734	for (l = sdi->channels; l; l = l->next) {
	735	ch = l->data;
	736	if (!ch->enabled)
	737	continue;
	738	/* Only add a single digital channel. */
	739	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	740	devc->enabled_channels = g_slist_append(
	741	devc->enabled_channels, ch);
	742	if (ch->type == SR_CHANNEL_LOGIC)
	743	digital_added = TRUE;
	744	}
	745	}
	746
	747	if (!devc->enabled_channels)
	748	return SR_ERR;
	749
	750	if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
	751	sr_err("Invalid channel configuration specified!");
	752	return SR_ERR_NA;
	753	}
	754
	755	if (hmo_setup_channels(sdi) != SR_OK) {
	756	sr_err("Failed to setup channel configuration!");
	757	return SR_ERR;
	758	}
	759
	760	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
	761	hmo_receive_data, (void *)sdi);
	762
	763	/* Send header packet to the session bus. */
	764	std_session_send_df_header(cb_data, LOG_PREFIX);
	765
	766	devc->current_channel = devc->enabled_channels;
	767
	768	return hmo_request_data(sdi);
	769	}
	770
	771	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	772	{
	773	struct dev_context *devc;
	774	struct sr_scpi_dev_inst *scpi;
	775	struct sr_datafeed_packet packet;
	776
	777	(void)cb_data;
	778
	779	packet.type = SR_DF_END;
	780	packet.payload = NULL;
	781	sr_session_send(sdi, &packet);
	782
	783	if (sdi->status != SR_ST_ACTIVE)
	784	return SR_ERR_DEV_CLOSED;
	785
	786	devc = sdi->priv;
	787
	788	devc->num_frames = 0;
	789	g_slist_free(devc->enabled_channels);
	790	devc->enabled_channels = NULL;
	791	scpi = sdi->conn;
	792	sr_scpi_source_remove(sdi->session, scpi);
	793
	794	return SR_OK;
	795	}
	796
	797	SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
	798	.name = "hameg-hmo",
	799	.longname = "Hameg HMO",
	800	.api_version = 1,
	801	.init = init,
	802	.cleanup = cleanup,
	803	.scan = scan,
	804	.dev_list = dev_list,
	805	.dev_clear = dev_clear,
	806	.config_get = config_get,
	807	.config_set = config_set,
	808	.config_list = config_list,
	809	.dev_open = dev_open,
	810	.dev_close = dev_close,
	811	.dev_acquisition_start = dev_acquisition_start,
	812	.dev_acquisition_stop = dev_acquisition_stop,
	813	.priv = NULL,
	814	};