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