[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",
};

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 <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	};
	32
	33	static const uint32_t drvopts[] = {
	34	SR_CONF_OSCILLOSCOPE,
	35	};
	36
	37	static const uint32_t scanopts[] = {
	38	SR_CONF_CONN,
	39	SR_CONF_SERIALCOMM,
	40	};
	41
	42	enum {
	43	CG_INVALID = -1,
	44	CG_NONE,
	45	CG_ANALOG,
	46	CG_DIGITAL,
	47	};
	48
	49	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	50	{
	51	return std_init(sr_ctx, di, LOG_PREFIX);
	52	}
	53
	54	static int check_manufacturer(const char *manufacturer)
	55	{
	56	unsigned int i;
	57
	58	for (i = 0; i < ARRAY_SIZE(manufacturers); ++i)
	59	if (!strcmp(manufacturer, manufacturers[i]))
	60	return SR_OK;
	61
	62	return SR_ERR;
	63	}
	64
	65	static struct sr_dev_inst hmo_probe_serial_device(struct sr_scpi_dev_inst scpi)
	66	{
	67	struct sr_dev_inst *sdi;
	68	struct dev_context *devc;
	69	struct sr_scpi_hw_info *hw_info;
	70
	71	sdi = NULL;
	72	devc = NULL;
	73	hw_info = NULL;
	74
	75	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	76	sr_info("Couldn't get IDN response.");
	77	goto fail;
	78	}
	79
	80	if (check_manufacturer(hw_info->manufacturer) != SR_OK)
	81	goto fail;
	82
	83	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	84	sdi->status = SR_ST_ACTIVE;
	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	sr_scpi_close(sdi->conn);
	104
	105	sdi->status = SR_ST_INACTIVE;
	106
	107	return sdi;
	108
	109	fail:
	110	if (hw_info)
	111	sr_scpi_hw_info_free(hw_info);
	112	if (sdi)
	113	sr_dev_inst_free(sdi);
	114	g_free(devc);
	115
	116	return NULL;
	117	}
	118
	119	static GSList scan(struct sr_dev_driver di, GSList *options)
	120	{
	121	return sr_scpi_scan(di->context, options, hmo_probe_serial_device);
	122	}
	123
	124	static GSList dev_list(const struct sr_dev_driver di)
	125	{
	126	return ((struct drv_context *)(di->context))->instances;
	127	}
	128
	129	static void clear_helper(void *priv)
	130	{
	131	struct dev_context *devc;
	132
	133	devc = priv;
	134
	135	hmo_scope_state_free(devc->model_state);
	136
	137	g_free(devc->analog_groups);
	138	g_free(devc->digital_groups);
	139
	140	g_free(devc);
	141	}
	142
	143	static int dev_clear(const struct sr_dev_driver *di)
	144	{
	145	return std_dev_clear(di, clear_helper);
	146	}
	147
	148	static int dev_open(struct sr_dev_inst *sdi)
	149	{
	150	if (sdi->status != SR_ST_ACTIVE && sr_scpi_open(sdi->conn) != SR_OK)
	151	return SR_ERR;
	152
	153	if (hmo_scope_state_get(sdi) != SR_OK)
	154	return SR_ERR;
	155
	156	sdi->status = SR_ST_ACTIVE;
	157
	158	return SR_OK;
	159	}
	160
	161	static int dev_close(struct sr_dev_inst *sdi)
	162	{
	163	if (sdi->status == SR_ST_INACTIVE)
	164	return SR_OK;
	165
	166	sr_scpi_close(sdi->conn);
	167
	168	sdi->status = SR_ST_INACTIVE;
	169
	170	return SR_OK;
	171	}
	172
	173	static int cleanup(const struct sr_dev_driver *di)
	174	{
	175	dev_clear(di);
	176
	177	return SR_OK;
	178	}
	179
	180	static int check_channel_group(struct dev_context *devc,
	181	const struct sr_channel_group *cg)
	182	{
	183	unsigned int i;
	184	const struct scope_config *model;
	185
	186	model = devc->model_config;
	187
	188	if (!cg)
	189	return CG_NONE;
	190
	191	for (i = 0; i < model->analog_channels; ++i)
	192	if (cg == devc->analog_groups[i])
	193	return CG_ANALOG;
	194
	195	for (i = 0; i < model->digital_pods; ++i)
	196	if (cg == devc->digital_groups[i])
	197	return CG_DIGITAL;
	198
	199	sr_err("Invalid channel group specified.");
	200
	201	return CG_INVALID;
	202	}
	203
	204	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	205	const struct sr_channel_group *cg)
	206	{
	207	int ret, cg_type;
	208	unsigned int i;
	209	struct dev_context *devc;
	210	const struct scope_config *model;
	211	struct scope_state *state;
	212
	213	if (!sdi \|\| !(devc = sdi->priv))
	214	return SR_ERR_ARG;
	215
	216	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	217	return SR_ERR;
	218
	219	ret = SR_ERR_NA;
	220	model = devc->model_config;
	221	state = devc->model_state;
	222
	223	switch (key) {
	224	case SR_CONF_NUM_HDIV:
	225	*data = g_variant_new_int32(model->num_xdivs);
	226	ret = SR_OK;
	227	break;
	228	case SR_CONF_TIMEBASE:
	229	data = g_variant_new("(tt)", (model->timebases)[state->timebase][0],
	230	(*model->timebases)[state->timebase][1]);
	231	ret = SR_OK;
	232	break;
	233	case SR_CONF_NUM_VDIV:
	234	if (cg_type == CG_NONE) {
	235	sr_err("No channel group specified.");
	236	return SR_ERR_CHANNEL_GROUP;
	237	} else if (cg_type == CG_ANALOG) {
	238	for (i = 0; i < model->analog_channels; ++i) {
	239	if (cg != devc->analog_groups[i])
	240	continue;
	241	*data = g_variant_new_int32(model->num_ydivs);
	242	ret = SR_OK;
	243	break;
	244	}
	245
	246	} else {
	247	ret = SR_ERR_NA;
	248	}
	249	break;
	250	case SR_CONF_VDIV:
	251	if (cg_type == CG_NONE) {
	252	sr_err("No channel group specified.");
	253	return SR_ERR_CHANNEL_GROUP;
	254	} else if (cg_type == CG_ANALOG) {
	255	for (i = 0; i < model->analog_channels; ++i) {
	256	if (cg != devc->analog_groups[i])
	257	continue;
	258	*data = g_variant_new("(tt)",
	259	(*model->vdivs)[state->analog_channels[i].vdiv][0],
	260	(*model->vdivs)[state->analog_channels[i].vdiv][1]);
	261	ret = SR_OK;
	262	break;
	263	}
	264
	265	} else {
	266	ret = SR_ERR_NA;
	267	}
	268	break;
	269	case SR_CONF_TRIGGER_SOURCE:
	270	data = g_variant_new_string((model->trigger_sources)[state->trigger_source]);
	271	ret = SR_OK;
	272	break;
	273	case SR_CONF_TRIGGER_SLOPE:
	274	data = g_variant_new_string((model->trigger_slopes)[state->trigger_slope]);
	275	ret = SR_OK;
	276	break;
	277	case SR_CONF_HORIZ_TRIGGERPOS:
	278	*data = g_variant_new_double(state->horiz_triggerpos);
	279	ret = SR_OK;
	280	break;
	281	case SR_CONF_COUPLING:
	282	if (cg_type == CG_NONE) {
	283	sr_err("No channel group specified.");
	284	return SR_ERR_CHANNEL_GROUP;
	285	} else if (cg_type == CG_ANALOG) {
	286	for (i = 0; i < model->analog_channels; ++i) {
	287	if (cg != devc->analog_groups[i])
	288	continue;
	289	data = g_variant_new_string((model->coupling_options)[state->analog_channels[i].coupling]);
	290	ret = SR_OK;
	291	break;
	292	}
	293
	294	} else {
	295	ret = SR_ERR_NA;
	296	}
	297	break;
	298	case SR_CONF_SAMPLERATE:
	299	*data = g_variant_new_uint64(state->sample_rate);
	300	ret = SR_OK;
	301	break;
	302	default:
	303	ret = SR_ERR_NA;
	304	}
	305
	306	return ret;
	307	}
	308
	309	static GVariant build_tuples(const uint64_t (array)[][2], unsigned int n)
	310	{
	311	unsigned int i;
	312	GVariant *rational[2];
	313	GVariantBuilder gvb;
	314
	315	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	316
	317	for (i = 0; i < n; i++) {
	318	rational[0] = g_variant_new_uint64((*array)[i][0]);
	319	rational[1] = g_variant_new_uint64((*array)[i][1]);
	320
	321	/* FIXME: Valgrind reports a memory leak here. */
	322	g_variant_builder_add_value(&gvb, g_variant_new_tuple(rational, 2));
	323	}
	324
	325	return g_variant_builder_end(&gvb);
	326	}
	327
	328	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	329	const struct sr_channel_group *cg)
	330	{
	331	int ret, cg_type;
	332	unsigned int i, j;
	333	char command[MAX_COMMAND_SIZE], float_str[30];
	334	struct dev_context *devc;
	335	const struct scope_config *model;
	336	struct scope_state *state;
	337	const char *tmp;
	338	uint64_t p, q;
	339	double tmp_d;
	340	gboolean update_sample_rate;
	341
	342	if (!sdi \|\| !(devc = sdi->priv))
	343	return SR_ERR_ARG;
	344
	345	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	346	return SR_ERR;
	347
	348	model = devc->model_config;
	349	state = devc->model_state;
	350	update_sample_rate = FALSE;
	351
	352	ret = SR_ERR_NA;
	353
	354	switch (key) {
	355	case SR_CONF_LIMIT_FRAMES:
	356	devc->frame_limit = g_variant_get_uint64(data);
	357	ret = SR_OK;
	358	break;
	359	case SR_CONF_TRIGGER_SOURCE:
	360	tmp = g_variant_get_string(data, NULL);
	361	for (i = 0; (*model->trigger_sources)[i]; i++) {
	362	if (g_strcmp0(tmp, (*model->trigger_sources)[i]) != 0)
	363	continue;
	364	state->trigger_source = i;
	365	g_snprintf(command, sizeof(command),
	366	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SOURCE],
	367	(*model->trigger_sources)[i]);
	368
	369	ret = sr_scpi_send(sdi->conn, command);
	370	break;
	371	}
	372	break;
	373	case SR_CONF_VDIV:
	374	if (cg_type == CG_NONE) {
	375	sr_err("No channel group specified.");
	376	return SR_ERR_CHANNEL_GROUP;
	377	}
	378
	379	g_variant_get(data, "(tt)", &p, &q);
	380
	381	for (i = 0; i < model->num_vdivs; i++) {
	382	if (p != (*model->vdivs)[i][0] \|\|
	383	q != (*model->vdivs)[i][1])
	384	continue;
	385	for (j = 1; j <= model->analog_channels; ++j) {
	386	if (cg != devc->analog_groups[j - 1])
	387	continue;
	388	state->analog_channels[j - 1].vdiv = i;
	389	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	390	g_snprintf(command, sizeof(command),
	391	(*model->scpi_dialect)[SCPI_CMD_SET_VERTICAL_DIV],
	392	j, float_str);
	393
	394	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	395	sr_scpi_get_opc(sdi->conn) != SR_OK)
	396	return SR_ERR;
	397
	398	break;
	399	}
	400
	401	ret = SR_OK;
	402	break;
	403	}
	404	break;
	405	case SR_CONF_TIMEBASE:
	406	g_variant_get(data, "(tt)", &p, &q);
	407
	408	for (i = 0; i < model->num_timebases; i++) {
	409	if (p != (*model->timebases)[i][0] \|\|
	410	q != (*model->timebases)[i][1])
	411	continue;
	412	state->timebase = i;
	413	g_ascii_formatd(float_str, sizeof(float_str), "%E", (float) p / q);
	414	g_snprintf(command, sizeof(command),
	415	(*model->scpi_dialect)[SCPI_CMD_SET_TIMEBASE],
	416	float_str);
	417
	418	ret = sr_scpi_send(sdi->conn, command);
	419	update_sample_rate = TRUE;
	420	break;
	421	}
	422	break;
	423	case SR_CONF_HORIZ_TRIGGERPOS:
	424	tmp_d = g_variant_get_double(data);
	425
	426	if (tmp_d < 0.0 \|\| tmp_d > 1.0)
	427	return SR_ERR;
	428
	429	state->horiz_triggerpos = tmp_d;
	430	tmp_d = -(tmp_d - 0.5) *
	431	((double) (*model->timebases)[state->timebase][0] /
	432	(*model->timebases)[state->timebase][1])
	433	* model->num_xdivs;
	434
	435	g_ascii_formatd(float_str, sizeof(float_str), "%E", tmp_d);
	436	g_snprintf(command, sizeof(command),
	437	(*model->scpi_dialect)[SCPI_CMD_SET_HORIZ_TRIGGERPOS],
	438	float_str);
	439
	440	ret = sr_scpi_send(sdi->conn, command);
	441	break;
	442	case SR_CONF_TRIGGER_SLOPE:
	443	tmp = g_variant_get_string(data, NULL);
	444
	445	if (!tmp \|\| !(tmp[0] == 'f' \|\| tmp[0] == 'r'))
	446	return SR_ERR_ARG;
	447
	448	state->trigger_slope = (tmp[0] == 'r') ? 0 : 1;
	449
	450	g_snprintf(command, sizeof(command),
	451	(*model->scpi_dialect)[SCPI_CMD_SET_TRIGGER_SLOPE],
	452	(state->trigger_slope == 0) ? "POS" : "NEG");
	453
	454	ret = sr_scpi_send(sdi->conn, command);
	455	break;
	456	case SR_CONF_COUPLING:
	457	if (cg_type == CG_NONE) {
	458	sr_err("No channel group specified.");
	459	return SR_ERR_CHANNEL_GROUP;
	460	}
	461
	462	tmp = g_variant_get_string(data, NULL);
	463
	464	for (i = 0; (*model->coupling_options)[i]; i++) {
	465	if (strcmp(tmp, (*model->coupling_options)[i]) != 0)
	466	continue;
	467	for (j = 1; j <= model->analog_channels; ++j) {
	468	if (cg != devc->analog_groups[j - 1])
	469	continue;
	470	state->analog_channels[j-1].coupling = i;
	471
	472	g_snprintf(command, sizeof(command),
	473	(*model->scpi_dialect)[SCPI_CMD_SET_COUPLING],
	474	j, tmp);
	475
	476	if (sr_scpi_send(sdi->conn, command) != SR_OK \|\|
	477	sr_scpi_get_opc(sdi->conn) != SR_OK)
	478	return SR_ERR;
	479	break;
	480	}
	481
	482	ret = SR_OK;
	483	break;
	484	}
	485	break;
	486	default:
	487	ret = SR_ERR_NA;
	488	break;
	489	}
	490
	491	if (ret == SR_OK)
	492	ret = sr_scpi_get_opc(sdi->conn);
	493
	494	if (ret == SR_OK && update_sample_rate)
	495	ret = hmo_update_sample_rate(sdi);
	496
	497	return ret;
	498	}
	499
	500	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	501	const struct sr_channel_group *cg)
	502	{
	503	int cg_type = CG_NONE;
	504	struct dev_context *devc = NULL;
	505	const struct scope_config *model = NULL;
	506
	507	if (sdi && (devc = sdi->priv)) {
	508	if ((cg_type = check_channel_group(devc, cg)) == CG_INVALID)
	509	return SR_ERR;
	510
	511	model = devc->model_config;
	512	}
	513
	514	switch (key) {
	515	case SR_CONF_SCAN_OPTIONS:
	516	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	517	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	518	break;
	519	case SR_CONF_DEVICE_OPTIONS:
	520	if (cg_type == CG_NONE) {
	521	if (model)
	522	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	523	model->devopts, model->num_devopts, sizeof(uint32_t));
	524	else
	525	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	526	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	527	} else if (cg_type == CG_ANALOG) {
	528	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	529	model->analog_devopts, model->num_analog_devopts,
	530	sizeof(uint32_t));
	531	} else {
	532	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	533	NULL, 0, sizeof(uint32_t));
	534	}
	535	break;
	536	case SR_CONF_COUPLING:
	537	if (cg_type == CG_NONE)
	538	return SR_ERR_CHANNEL_GROUP;
	539	data = g_variant_new_strv(model->coupling_options,
	540	g_strv_length((char *)model->coupling_options));
	541	break;
	542	case SR_CONF_TRIGGER_SOURCE:
	543	if (!model)
	544	return SR_ERR_ARG;
	545	data = g_variant_new_strv(model->trigger_sources,
	546	g_strv_length((char *)model->trigger_sources));
	547	break;
	548	case SR_CONF_TRIGGER_SLOPE:
	549	if (!model)
	550	return SR_ERR_ARG;
	551	data = g_variant_new_strv(model->trigger_slopes,
	552	g_strv_length((char *)model->trigger_slopes));
	553	break;
	554	case SR_CONF_TIMEBASE:
	555	if (!model)
	556	return SR_ERR_ARG;
	557	*data = build_tuples(model->timebases, model->num_timebases);
	558	break;
	559	case SR_CONF_VDIV:
	560	if (cg_type == CG_NONE)
	561	return SR_ERR_CHANNEL_GROUP;
	562	*data = build_tuples(model->vdivs, model->num_vdivs);
	563	break;
	564	default:
	565	return SR_ERR_NA;
	566	}
	567
	568	return SR_OK;
	569	}
	570
	571	SR_PRIV int hmo_request_data(const struct sr_dev_inst *sdi)
	572	{
	573	char command[MAX_COMMAND_SIZE];
	574	struct sr_channel *ch;
	575	struct dev_context *devc;
	576	const struct scope_config *model;
	577
	578	devc = sdi->priv;
	579	model = devc->model_config;
	580
	581	ch = devc->current_channel->data;
	582
	583	switch (ch->type) {
	584	case SR_CHANNEL_ANALOG:
	585	g_snprintf(command, sizeof(command),
	586	(*model->scpi_dialect)[SCPI_CMD_GET_ANALOG_DATA],
	587	ch->index + 1);
	588	break;
	589	case SR_CHANNEL_LOGIC:
	590	g_snprintf(command, sizeof(command),
	591	(*model->scpi_dialect)[SCPI_CMD_GET_DIG_DATA],
	592	ch->index < 8 ? 1 : 2);
	593	break;
	594	default:
	595	sr_err("Invalid channel type.");
	596	break;
	597	}
	598
	599	return sr_scpi_send(sdi->conn, command);
	600	}
	601
	602	static int hmo_check_channels(GSList *channels)
	603	{
	604	GSList *l;
	605	struct sr_channel *ch;
	606	gboolean enabled_pod1, enabled_pod2, enabled_chan3, enabled_chan4;
	607
	608	enabled_pod1 = enabled_pod2 = enabled_chan3 = enabled_chan4 = FALSE;
	609
	610	for (l = channels; l; l = l->next) {
	611	ch = l->data;
	612	switch (ch->type) {
	613	case SR_CHANNEL_ANALOG:
	614	if (ch->index == 2)
	615	enabled_chan3 = TRUE;
	616	else if (ch->index == 3)
	617	enabled_chan4 = TRUE;
	618	break;
	619	case SR_CHANNEL_LOGIC:
	620	if (ch->index < 8)
	621	enabled_pod1 = TRUE;
	622	else
	623	enabled_pod2 = TRUE;
	624	break;
	625	default:
	626	return SR_ERR;
	627	}
	628	}
	629
	630	if ((enabled_pod1 && enabled_chan3) \|\|
	631	(enabled_pod2 && enabled_chan4))
	632	return SR_ERR;
	633
	634	return SR_OK;
	635	}
	636
	637	static int hmo_setup_channels(const struct sr_dev_inst *sdi)
	638	{
	639	GSList *l;
	640	unsigned int i;
	641	gboolean *pod_enabled, setup_changed;
	642	char command[MAX_COMMAND_SIZE];
	643	struct scope_state *state;
	644	const struct scope_config *model;
	645	struct sr_channel *ch;
	646	struct dev_context *devc;
	647	struct sr_scpi_dev_inst *scpi;
	648
	649	devc = sdi->priv;
	650	scpi = sdi->conn;
	651	state = devc->model_state;
	652	model = devc->model_config;
	653	setup_changed = FALSE;
	654
	655	pod_enabled = g_try_malloc0(sizeof(gboolean) * model->digital_pods);
	656
	657	for (l = sdi->channels; l; l = l->next) {
	658	ch = l->data;
	659	switch (ch->type) {
	660	case SR_CHANNEL_ANALOG:
	661	if (ch->enabled == state->analog_channels[ch->index].state)
	662	break;
	663	g_snprintf(command, sizeof(command),
	664	(*model->scpi_dialect)[SCPI_CMD_SET_ANALOG_CHAN_STATE],
	665	ch->index + 1, ch->enabled);
	666
	667	if (sr_scpi_send(scpi, command) != SR_OK)
	668	return SR_ERR;
	669	state->analog_channels[ch->index].state = ch->enabled;
	670	setup_changed = TRUE;
	671	break;
	672	case SR_CHANNEL_LOGIC:
	673	/*
	674	* A digital POD needs to be enabled for every group of
	675	* 8 channels.
	676	*/
	677	if (ch->enabled)
	678	pod_enabled[ch->index < 8 ? 0 : 1] = TRUE;
	679
	680	if (ch->enabled == state->digital_channels[ch->index])
	681	break;
	682	g_snprintf(command, sizeof(command),
	683	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_CHAN_STATE],
	684	ch->index, ch->enabled);
	685
	686	if (sr_scpi_send(scpi, command) != SR_OK)
	687	return SR_ERR;
	688
	689	state->digital_channels[ch->index] = ch->enabled;
	690	setup_changed = TRUE;
	691	break;
	692	default:
	693	return SR_ERR;
	694	}
	695	}
	696
	697	for (i = 1; i <= model->digital_pods; ++i) {
	698	if (state->digital_pods[i - 1] == pod_enabled[i - 1])
	699	continue;
	700	g_snprintf(command, sizeof(command),
	701	(*model->scpi_dialect)[SCPI_CMD_SET_DIG_POD_STATE],
	702	i, pod_enabled[i - 1]);
	703	if (sr_scpi_send(scpi, command) != SR_OK)
	704	return SR_ERR;
	705	state->digital_pods[i - 1] = pod_enabled[i - 1];
	706	setup_changed = TRUE;
	707	}
	708
	709	g_free(pod_enabled);
	710
	711	if (setup_changed && hmo_update_sample_rate(sdi) != SR_OK)
	712	return SR_ERR;
	713
	714	return SR_OK;
	715	}
	716
	717	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
	718	{
	719	GSList *l;
	720	gboolean digital_added;
	721	struct sr_channel *ch;
	722	struct dev_context *devc;
	723	struct sr_scpi_dev_inst *scpi;
	724
	725	if (sdi->status != SR_ST_ACTIVE)
	726	return SR_ERR_DEV_CLOSED;
	727
	728	scpi = sdi->conn;
	729	devc = sdi->priv;
	730	digital_added = FALSE;
	731
	732	g_slist_free(devc->enabled_channels);
	733	devc->enabled_channels = NULL;
	734
	735	for (l = sdi->channels; l; l = l->next) {
	736	ch = l->data;
	737	if (!ch->enabled)
	738	continue;
	739	/* Only add a single digital channel. */
	740	if (ch->type != SR_CHANNEL_LOGIC \|\| !digital_added) {
	741	devc->enabled_channels = g_slist_append(
	742	devc->enabled_channels, ch);
	743	if (ch->type == SR_CHANNEL_LOGIC)
	744	digital_added = TRUE;
	745	}
	746	}
	747
	748	if (!devc->enabled_channels)
	749	return SR_ERR;
	750
	751	if (hmo_check_channels(devc->enabled_channels) != SR_OK) {
	752	sr_err("Invalid channel configuration specified!");
	753	return SR_ERR_NA;
	754	}
	755
	756	if (hmo_setup_channels(sdi) != SR_OK) {
	757	sr_err("Failed to setup channel configuration!");
	758	return SR_ERR;
	759	}
	760
	761	sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 50,
	762	hmo_receive_data, (void *)sdi);
	763
	764	/* Send header packet to the session bus. */
	765	std_session_send_df_header(cb_data, LOG_PREFIX);
	766
	767	devc->current_channel = devc->enabled_channels;
	768
	769	return hmo_request_data(sdi);
	770	}
	771
	772	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	773	{
	774	struct dev_context *devc;
	775	struct sr_scpi_dev_inst *scpi;
	776	struct sr_datafeed_packet packet;
	777
	778	(void)cb_data;
	779
	780	packet.type = SR_DF_END;
	781	packet.payload = NULL;
	782	sr_session_send(sdi, &packet);
	783
	784	if (sdi->status != SR_ST_ACTIVE)
	785	return SR_ERR_DEV_CLOSED;
	786
	787	devc = sdi->priv;
	788
	789	devc->num_frames = 0;
	790	g_slist_free(devc->enabled_channels);
	791	devc->enabled_channels = NULL;
	792	scpi = sdi->conn;
	793	sr_scpi_source_remove(sdi->session, scpi);
	794
	795	return SR_OK;
	796	}
	797
	798	SR_PRIV struct sr_dev_driver hameg_hmo_driver_info = {
	799	.name = "hameg-hmo",
	800	.longname = "Hameg HMO",
	801	.api_version = 1,
	802	.init = init,
	803	.cleanup = cleanup,
	804	.scan = scan,
	805	.dev_list = dev_list,
	806	.dev_clear = dev_clear,
	807	.config_get = config_get,
	808	.config_set = config_set,
	809	.config_list = config_list,
	810	.dev_open = dev_open,
	811	.dev_close = dev_close,
	812	.dev_acquisition_start = dev_acquisition_start,
	813	.dev_acquisition_stop = dev_acquisition_stop,
	814	.context = NULL,
	815	};