[libsigrok.git] / src / hardware / scpi-pps / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 Bert Vermeulen <bert@biot.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 <string.h>
#include "protocol.h"

SR_PRIV struct sr_dev_driver scpi_pps_driver_info;
static struct sr_dev_driver *di = &scpi_pps_driver_info;
extern unsigned int num_pps_profiles;
extern const struct scpi_pps pps_profiles[];

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

static struct pps_channel_instance pci[] = {
	{ SR_MQ_VOLTAGE, SCPI_CMD_GET_MEAS_VOLTAGE, "V" },
	{ SR_MQ_CURRENT, SCPI_CMD_GET_MEAS_CURRENT, "I" },
	{ SR_MQ_POWER, SCPI_CMD_GET_MEAS_POWER, "P" },
};

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

static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
{
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_scpi_hw_info *hw_info;
	struct sr_channel_group *cg;
	struct sr_channel *ch;
	const struct scpi_pps *device;
	struct pps_channel *pch;
	const struct channel_group_spec *cgs;
	struct pps_channel_group *pcg;
	GRegex *model_re;
	GMatchInfo *model_mi;
	GSList *l;
	uint64_t mask;
	unsigned int ch_num, ch_idx, i, j;
	const char *vendor;
	char ch_name[16];

	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
		sr_info("Couldn't get IDN response.");
		return NULL;
	}

	device = NULL;
	for (i = 0; i < num_pps_profiles; i++) {
		vendor = get_vendor(hw_info->manufacturer);
		if (strcasecmp(vendor, pps_profiles[i].vendor))
			continue;
		model_re = g_regex_new(pps_profiles[i].model, 0, 0, NULL);
		if (g_regex_match(model_re, hw_info->model, 0, &model_mi))
			device = &pps_profiles[i];
		g_match_info_unref(model_mi);
		g_regex_unref(model_re);
		if (device)
			break;
	}
	if (!device) {
		sr_scpi_hw_info_free(hw_info);
		return NULL;
	}

	sdi = sr_dev_inst_new(SR_ST_ACTIVE, vendor, hw_info->model,
			hw_info->firmware_version);
	sdi->conn = scpi;
	sdi->driver = di;
	sdi->inst_type = SR_INST_SCPI;
	devc = g_malloc0(sizeof(struct dev_context));
	devc->device = device;
	sdi->priv = devc;

	ch_idx = 0;
	for (ch_num = 0; ch_num < device->num_channels; ch_num++) {
		/* Create one channel per measurable output unit. */
		for (i = 0; i < ARRAY_SIZE(pci); i++) {
			if (!scpi_cmd_get(sdi, pci[i].command))
				continue;
			g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
					device->channels[ch_num].name);
			ch = sr_channel_new(ch_idx++, SR_CHANNEL_ANALOG, TRUE, ch_name);
			pch = g_malloc0(sizeof(struct pps_channel));
			pch->hw_output_idx = ch_num;
			pch->hwname = device->channels[ch_num].name;
			pch->mq = pci[i].mq;
			ch->priv = pch;
			sdi->channels = g_slist_append(sdi->channels, ch);
		}
	}

	for (i = 0; i < device->num_channel_groups; i++) {
		cgs = &device->channel_groups[i];
		cg = g_malloc0(sizeof(struct sr_channel_group));
		cg->name = g_strdup(cgs->name);
		for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
			if (cgs->channel_index_mask & mask) {
				for (l = sdi->channels; l; l = l->next) {
					ch = l->data;
					pch = ch->priv;
					if (pch->hw_output_idx == j)
						cg->channels = g_slist_append(cg->channels, ch);
				}
			}
		}
		pcg = g_malloc0(sizeof(struct pps_channel_group));
		pcg->features = cgs->features;
		cg->priv = pcg;
		sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	}

	scpi_cmd(sdi, SCPI_CMD_LOCAL);
	sr_scpi_close(scpi);

	return sdi;
}

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

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

static int dev_clear(void)
{
	return std_dev_clear(di, NULL);
}

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_scpi_dev_inst *scpi;

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

	scpi = sdi->conn;
	if (sr_scpi_open(scpi) < 0)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	scpi_cmd(sdi, SCPI_CMD_REMOTE);

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_scpi_dev_inst *scpi;

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

	scpi = sdi->conn;
	if (scpi) {
		scpi_cmd(sdi, SCPI_CMD_LOCAL);
		sr_scpi_close(scpi);
		sdi->status = SR_ST_INACTIVE;
	}

	return SR_OK;
}

static int cleanup(void)
{
	return std_dev_clear(di, NULL);
}

static int config_get(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	const GVariantType *gvtype;
	unsigned int i;
	int cmd, ret;
	const char *s;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	if (cg) {
		/*
		 * These options only apply to channel groups with a single
		 * channel -- they're per-channel settings for the device.
		 */

		/*
		 * Config keys are handled below depending on whether a channel
		 * group was provided by the frontend. However some of these
		 * take a CG on one PPS but not on others. Check the device's
		 * profile for that here, and NULL out the channel group as needed.
		 */
		for (i = 0; i < devc->device->num_devopts; i++) {
			if (devc->device->devopts[i] == key) {
				cg = NULL;
				break;
			}
		}
	}

	gvtype = NULL;
	cmd = -1;
	switch (key) {
	case SR_CONF_OUTPUT_ENABLED:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
		break;
	case SR_CONF_OUTPUT_VOLTAGE:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
		break;
	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_VOLTAGE_TARGET;
		break;
	case SR_CONF_OUTPUT_CURRENT:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_MEAS_CURRENT;
		break;
	case SR_CONF_OUTPUT_CURRENT_LIMIT:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_CURRENT_LIMIT;
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
		break;
	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
		gvtype = G_VARIANT_TYPE_BOOLEAN;
		cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
		break;
	case SR_CONF_OUTPUT_REGULATION:
		gvtype = G_VARIANT_TYPE_STRING;
		cmd = SCPI_CMD_GET_OUTPUT_REGULATION;
	}
	if (gvtype) {
		if (cg)
			select_channel(sdi, cg->channels->data);
		ret = scpi_cmd_resp(sdi, data, gvtype, cmd);

		if (gvtype == G_VARIANT_TYPE_STRING && ret == SR_OK) {
			/* Non-standard data type responses. */
			switch (key) {
			case SCPI_CMD_GET_OUTPUT_REGULATION:
				/*
				 * This is specific to the Rigol DP800 series.
				 * We return the same string for now until more
				 * models with this key are supported. Do a check
				 * just for the hell of it.
				 */
				s = g_variant_get_string(*data, NULL);
				if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) {
					sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
					ret = SR_ERR_DATA;
				}
				break;
			}
		}
	} else
		ret = SR_ERR_NA;

	return ret;
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	double d;
	int ret;

	if (!sdi)
		return SR_ERR_ARG;

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

	if (cg)
		/* Channel group specified. */
		select_channel(sdi, cg->channels->data);

	ret = SR_OK;
	switch (key) {
	case SR_CONF_OUTPUT_ENABLED:
		if (g_variant_get_boolean(data))
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLE);
		else
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_DISABLE);
		break;
	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
		d = g_variant_get_double(data);
		ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_TARGET, d);
		break;
	case SR_CONF_OUTPUT_CURRENT_LIMIT:
		d = g_variant_get_double(data);
		ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_LIMIT, d);
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
		if (g_variant_get_boolean(data))
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE);
		else
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE);
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
		d = g_variant_get_double(data);
		ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, d);
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
		if (g_variant_get_boolean(data))
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE);
		else
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE);
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
		d = g_variant_get_double(data);
		ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, d);
		break;
	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
		if (g_variant_get_boolean(data))
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE);
		else
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE);
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	struct sr_channel *ch;
	struct channel_spec *ch_spec;
	GVariant *gvar;
	GVariantBuilder gvb;
	int ret, i;
	const char *s[16];

	/* Always available, even without sdi. */
	if (key == SR_CONF_SCAN_OPTIONS) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		return SR_OK;
	}

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

	ret = SR_OK;
	if (!cg) {
		/* No channel group: global options. */
		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					devc->device->devopts, devc->device->num_devopts,
					sizeof(uint32_t));
			break;
		case SR_CONF_OUTPUT_CHANNEL_CONFIG:
			/* Not used. */
			i = 0;
			if (devc->device->features & PPS_INDEPENDENT)
				s[i++] = "Independent";
			if (devc->device->features & PPS_SERIES)
				s[i++] = "Series";
			if (devc->device->features & PPS_PARALLEL)
				s[i++] = "Parallel";
			if (i == 0) {
				/*
				 * Shouldn't happen: independent-only devices
				 * shouldn't advertise this option at all.
				 */
				return SR_ERR_NA;
			}
			*data = g_variant_new_strv(s, i);
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* Channel group specified. */
		/*
		 * Per-channel-group options depending on a channel are actually
		 * done with the first channel. Channel groups in PPS can have
		 * more than one channel, but they will typically be of equal
		 * specification for use in series or parallel mode.
		 */
		ch = cg->channels->data;

		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					devc->device->devopts_cg, devc->device->num_devopts_cg,
					sizeof(uint32_t));
			break;
		case SR_CONF_OUTPUT_VOLTAGE_TARGET:
			ch_spec = &(devc->device->channels[ch->index]);
			g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
			/* Min, max, write resolution. */
			for (i = 0; i < 3; i++) {
				gvar = g_variant_new_double(ch_spec->voltage[i]);
				g_variant_builder_add_value(&gvb, gvar);
			}
			*data = g_variant_builder_end(&gvb);
			break;
		case SR_CONF_OUTPUT_CURRENT_LIMIT:
			g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
			/* Min, max, step. */
			for (i = 0; i < 3; i++) {
				ch_spec = &(devc->device->channels[ch->index]);
				gvar = g_variant_new_double(ch_spec->current[i]);
				g_variant_builder_add_value(&gvb, gvar);
			}
			*data = g_variant_builder_end(&gvb);
			break;
		default:
			return SR_ERR_NA;
		}
	}

	return ret;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi,
		void *cb_data)
{
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;
	struct sr_channel *ch;
	struct pps_channel *pch;
	int cmd, ret;

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

	devc = sdi->priv;
	scpi = sdi->conn;
	devc->cb_data = cb_data;

	if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
			scpi_pps_receive_data, (void *)sdi)) != SR_OK)
		return ret;
	std_session_send_df_header(sdi, LOG_PREFIX);

	/* Prime the pipe with the first channel's fetch. */
	ch = sdi->channels->data;
	pch = ch->priv;
	select_channel(sdi, ch);
	if (pch->mq == SR_MQ_VOLTAGE)
		cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
	else if (pch->mq == SR_MQ_CURRENT)
		cmd = SCPI_CMD_GET_MEAS_CURRENT;
	else if (pch->mq == SR_MQ_POWER)
		cmd = SCPI_CMD_GET_MEAS_POWER;
	else
		return SR_ERR;
	scpi_cmd(sdi, cmd, pch->hwname);

	return SR_OK;
}

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

	(void)cb_data;

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

	scpi = sdi->conn;

	/*
	 * A requested value is certainly on the way. Retrieve it now,
	 * to avoid leaving the device in a state where it's not expecting
	 * commands.
	 */
	sr_scpi_get_float(scpi, NULL, &f);
	sr_scpi_source_remove(sdi->session, scpi);

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

	return SR_OK;
}

SR_PRIV struct sr_dev_driver scpi_pps_driver_info = {
	.name = "scpi-pps",
	.longname = "SCPI PPS",
	.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) 2014 Bert Vermeulen <bert@biot.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 <string.h>
	21	#include "protocol.h"
	22
	23	SR_PRIV struct sr_dev_driver scpi_pps_driver_info;
	24	static struct sr_dev_driver *di = &scpi_pps_driver_info;
	25	extern unsigned int num_pps_profiles;
	26	extern const struct scpi_pps pps_profiles[];
	27
	28	static const uint32_t scanopts[] = {
	29	SR_CONF_CONN,
	30	SR_CONF_SERIALCOMM,
	31	};
	32
	33	static struct pps_channel_instance pci[] = {
	34	{ SR_MQ_VOLTAGE, SCPI_CMD_GET_MEAS_VOLTAGE, "V" },
	35	{ SR_MQ_CURRENT, SCPI_CMD_GET_MEAS_CURRENT, "I" },
	36	{ SR_MQ_POWER, SCPI_CMD_GET_MEAS_POWER, "P" },
	37	};
	38
	39	static int init(struct sr_context *sr_ctx)
	40	{
	41	return std_init(sr_ctx, di, LOG_PREFIX);
	42	}
	43
	44	static struct sr_dev_inst probe_device(struct sr_scpi_dev_inst scpi)
	45	{
	46	struct dev_context *devc;
	47	struct sr_dev_inst *sdi;
	48	struct sr_scpi_hw_info *hw_info;
	49	struct sr_channel_group *cg;
	50	struct sr_channel *ch;
	51	const struct scpi_pps *device;
	52	struct pps_channel *pch;
	53	const struct channel_group_spec *cgs;
	54	struct pps_channel_group *pcg;
	55	GRegex *model_re;
	56	GMatchInfo *model_mi;
	57	GSList *l;
	58	uint64_t mask;
	59	unsigned int ch_num, ch_idx, i, j;
	60	const char *vendor;
	61	char ch_name[16];
	62
	63	if (sr_scpi_get_hw_id(scpi, &hw_info) != SR_OK) {
	64	sr_info("Couldn't get IDN response.");
	65	return NULL;
	66	}
	67
	68	device = NULL;
	69	for (i = 0; i < num_pps_profiles; i++) {
	70	vendor = get_vendor(hw_info->manufacturer);
	71	if (strcasecmp(vendor, pps_profiles[i].vendor))
	72	continue;
	73	model_re = g_regex_new(pps_profiles[i].model, 0, 0, NULL);
	74	if (g_regex_match(model_re, hw_info->model, 0, &model_mi))
	75	device = &pps_profiles[i];
	76	g_match_info_unref(model_mi);
	77	g_regex_unref(model_re);
	78	if (device)
	79	break;
	80	}
	81	if (!device) {
	82	sr_scpi_hw_info_free(hw_info);
	83	return NULL;
	84	}
	85
	86	sdi = sr_dev_inst_new(SR_ST_ACTIVE, vendor, hw_info->model,
	87	hw_info->firmware_version);
	88	sdi->conn = scpi;
	89	sdi->driver = di;
	90	sdi->inst_type = SR_INST_SCPI;
	91	devc = g_malloc0(sizeof(struct dev_context));
	92	devc->device = device;
	93	sdi->priv = devc;
	94
	95	ch_idx = 0;
	96	for (ch_num = 0; ch_num < device->num_channels; ch_num++) {
	97	/* Create one channel per measurable output unit. */
	98	for (i = 0; i < ARRAY_SIZE(pci); i++) {
	99	if (!scpi_cmd_get(sdi, pci[i].command))
	100	continue;
	101	g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
	102	device->channels[ch_num].name);
	103	ch = sr_channel_new(ch_idx++, SR_CHANNEL_ANALOG, TRUE, ch_name);
	104	pch = g_malloc0(sizeof(struct pps_channel));
	105	pch->hw_output_idx = ch_num;
	106	pch->hwname = device->channels[ch_num].name;
	107	pch->mq = pci[i].mq;
	108	ch->priv = pch;
	109	sdi->channels = g_slist_append(sdi->channels, ch);
	110	}
	111	}
	112
	113	for (i = 0; i < device->num_channel_groups; i++) {
	114	cgs = &device->channel_groups[i];
	115	cg = g_malloc0(sizeof(struct sr_channel_group));
	116	cg->name = g_strdup(cgs->name);
	117	for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
	118	if (cgs->channel_index_mask & mask) {
	119	for (l = sdi->channels; l; l = l->next) {
	120	ch = l->data;
	121	pch = ch->priv;
	122	if (pch->hw_output_idx == j)
	123	cg->channels = g_slist_append(cg->channels, ch);
	124	}
	125	}
	126	}
	127	pcg = g_malloc0(sizeof(struct pps_channel_group));
	128	pcg->features = cgs->features;
	129	cg->priv = pcg;
	130	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	131	}
	132
	133	scpi_cmd(sdi, SCPI_CMD_LOCAL);
	134	sr_scpi_close(scpi);
	135
	136	return sdi;
	137	}
	138
	139	static GSList scan(GSList options)
	140	{
	141	return sr_scpi_scan(di->priv, options, probe_device);
	142	}
	143
	144	static GSList *dev_list(void)
	145	{
	146	return ((struct drv_context *)(di->priv))->instances;
	147	}
	148
	149	static int dev_clear(void)
	150	{
	151	return std_dev_clear(di, NULL);
	152	}
	153
	154	static int dev_open(struct sr_dev_inst *sdi)
	155	{
	156	struct sr_scpi_dev_inst *scpi;
	157
	158	if (sdi->status != SR_ST_ACTIVE)
	159	return SR_ERR;
	160
	161	scpi = sdi->conn;
	162	if (sr_scpi_open(scpi) < 0)
	163	return SR_ERR;
	164
	165	sdi->status = SR_ST_ACTIVE;
	166
	167	scpi_cmd(sdi, SCPI_CMD_REMOTE);
	168
	169	return SR_OK;
	170	}
	171
	172	static int dev_close(struct sr_dev_inst *sdi)
	173	{
	174	struct sr_scpi_dev_inst *scpi;
	175
	176	if (sdi->status != SR_ST_ACTIVE)
	177	return SR_ERR_DEV_CLOSED;
	178
	179	scpi = sdi->conn;
	180	if (scpi) {
	181	scpi_cmd(sdi, SCPI_CMD_LOCAL);
	182	sr_scpi_close(scpi);
	183	sdi->status = SR_ST_INACTIVE;
	184	}
	185
	186	return SR_OK;
	187	}
	188
	189	static int cleanup(void)
	190	{
	191	return std_dev_clear(di, NULL);
	192	}
	193
	194	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	195	const struct sr_channel_group *cg)
	196	{
	197	struct dev_context *devc;
	198	const GVariantType *gvtype;
	199	unsigned int i;
	200	int cmd, ret;
	201	const char *s;
	202
	203	if (!sdi)
	204	return SR_ERR_ARG;
	205
	206	devc = sdi->priv;
	207
	208	if (cg) {
	209	/*
	210	* These options only apply to channel groups with a single
	211	* channel -- they're per-channel settings for the device.
	212	*/
	213
	214	/*
	215	* Config keys are handled below depending on whether a channel
	216	* group was provided by the frontend. However some of these
	217	* take a CG on one PPS but not on others. Check the device's
	218	* profile for that here, and NULL out the channel group as needed.
	219	*/
	220	for (i = 0; i < devc->device->num_devopts; i++) {
	221	if (devc->device->devopts[i] == key) {
	222	cg = NULL;
	223	break;
	224	}
	225	}
	226	}
	227
	228	gvtype = NULL;
	229	cmd = -1;
	230	switch (key) {
	231	case SR_CONF_OUTPUT_ENABLED:
	232	gvtype = G_VARIANT_TYPE_BOOLEAN;
	233	cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
	234	break;
	235	case SR_CONF_OUTPUT_VOLTAGE:
	236	gvtype = G_VARIANT_TYPE_DOUBLE;
	237	cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
	238	break;
	239	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
	240	gvtype = G_VARIANT_TYPE_DOUBLE;
	241	cmd = SCPI_CMD_GET_VOLTAGE_TARGET;
	242	break;
	243	case SR_CONF_OUTPUT_CURRENT:
	244	gvtype = G_VARIANT_TYPE_DOUBLE;
	245	cmd = SCPI_CMD_GET_MEAS_CURRENT;
	246	break;
	247	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	248	gvtype = G_VARIANT_TYPE_DOUBLE;
	249	cmd = SCPI_CMD_GET_CURRENT_LIMIT;
	250	break;
	251	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	252	gvtype = G_VARIANT_TYPE_BOOLEAN;
	253	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
	254	break;
	255	case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
	256	gvtype = G_VARIANT_TYPE_BOOLEAN;
	257	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
	258	break;
	259	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
	260	gvtype = G_VARIANT_TYPE_DOUBLE;
	261	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
	262	break;
	263	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	264	gvtype = G_VARIANT_TYPE_BOOLEAN;
	265	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
	266	break;
	267	case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
	268	gvtype = G_VARIANT_TYPE_BOOLEAN;
	269	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
	270	break;
	271	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
	272	gvtype = G_VARIANT_TYPE_DOUBLE;
	273	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
	274	break;
	275	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
	276	gvtype = G_VARIANT_TYPE_BOOLEAN;
	277	cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
	278	break;
	279	case SR_CONF_OUTPUT_REGULATION:
	280	gvtype = G_VARIANT_TYPE_STRING;
	281	cmd = SCPI_CMD_GET_OUTPUT_REGULATION;
	282	}
	283	if (gvtype) {
	284	if (cg)
	285	select_channel(sdi, cg->channels->data);
	286	ret = scpi_cmd_resp(sdi, data, gvtype, cmd);
	287
	288	if (gvtype == G_VARIANT_TYPE_STRING && ret == SR_OK) {
	289	/* Non-standard data type responses. */
	290	switch (key) {
	291	case SCPI_CMD_GET_OUTPUT_REGULATION:
	292	/*
	293	* This is specific to the Rigol DP800 series.
	294	* We return the same string for now until more
	295	* models with this key are supported. Do a check
	296	* just for the hell of it.
	297	*/
	298	s = g_variant_get_string(*data, NULL);
	299	if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) {
	300	sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
	301	ret = SR_ERR_DATA;
	302	}
	303	break;
	304	}
	305	}
	306	} else
	307	ret = SR_ERR_NA;
	308
	309	return ret;
	310	}
	311
	312	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	313	const struct sr_channel_group *cg)
	314	{
	315	double d;
	316	int ret;
	317
	318	if (!sdi)
	319	return SR_ERR_ARG;
	320
	321	if (sdi->status != SR_ST_ACTIVE)
	322	return SR_ERR_DEV_CLOSED;
	323
	324	if (cg)
	325	/* Channel group specified. */
	326	select_channel(sdi, cg->channels->data);
	327
	328	ret = SR_OK;
	329	switch (key) {
	330	case SR_CONF_OUTPUT_ENABLED:
	331	if (g_variant_get_boolean(data))
	332	ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLE);
	333	else
	334	ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_DISABLE);
	335	break;
	336	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
	337	d = g_variant_get_double(data);
	338	ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_TARGET, d);
	339	break;
	340	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	341	d = g_variant_get_double(data);
	342	ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_LIMIT, d);
	343	break;
	344	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	345	if (g_variant_get_boolean(data))
	346	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLE);
	347	else
	348	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_DISABLE);
	349	break;
	350	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
	351	d = g_variant_get_double(data);
	352	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD, d);
	353	break;
	354	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	355	if (g_variant_get_boolean(data))
	356	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLE);
	357	else
	358	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_DISABLE);
	359	break;
	360	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
	361	d = g_variant_get_double(data);
	362	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD, d);
	363	break;
	364	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
	365	if (g_variant_get_boolean(data))
	366	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_ENABLE);
	367	else
	368	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION_DISABLE);
	369	break;
	370	default:
	371	ret = SR_ERR_NA;
	372	}
	373
	374	return ret;
	375	}
	376
	377	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	378	const struct sr_channel_group *cg)
	379	{
	380	struct dev_context *devc;
	381	struct sr_channel *ch;
	382	struct channel_spec *ch_spec;
	383	GVariant *gvar;
	384	GVariantBuilder gvb;
	385	int ret, i;
	386	const char *s[16];
	387
	388	/* Always available, even without sdi. */
	389	if (key == SR_CONF_SCAN_OPTIONS) {
	390	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	391	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	392	return SR_OK;
	393	}
	394
	395	if (!sdi)
	396	return SR_ERR_ARG;
	397	devc = sdi->priv;
	398
	399	ret = SR_OK;
	400	if (!cg) {
	401	/* No channel group: global options. */
	402	switch (key) {
	403	case SR_CONF_DEVICE_OPTIONS:
	404	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	405	devc->device->devopts, devc->device->num_devopts,
	406	sizeof(uint32_t));
	407	break;
	408	case SR_CONF_OUTPUT_CHANNEL_CONFIG:
	409	/* Not used. */
	410	i = 0;
	411	if (devc->device->features & PPS_INDEPENDENT)
	412	s[i++] = "Independent";
	413	if (devc->device->features & PPS_SERIES)
	414	s[i++] = "Series";
	415	if (devc->device->features & PPS_PARALLEL)
	416	s[i++] = "Parallel";
	417	if (i == 0) {
	418	/*
	419	* Shouldn't happen: independent-only devices
	420	* shouldn't advertise this option at all.
	421	*/
	422	return SR_ERR_NA;
	423	}
	424	*data = g_variant_new_strv(s, i);
	425	break;
	426	default:
	427	return SR_ERR_NA;
	428	}
	429	} else {
	430	/* Channel group specified. */
	431	/*
	432	* Per-channel-group options depending on a channel are actually
	433	* done with the first channel. Channel groups in PPS can have
	434	* more than one channel, but they will typically be of equal
	435	* specification for use in series or parallel mode.
	436	*/
	437	ch = cg->channels->data;
	438
	439	switch (key) {
	440	case SR_CONF_DEVICE_OPTIONS:
	441	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	442	devc->device->devopts_cg, devc->device->num_devopts_cg,
	443	sizeof(uint32_t));
	444	break;
	445	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
	446	ch_spec = &(devc->device->channels[ch->index]);
	447	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	448	/* Min, max, write resolution. */
	449	for (i = 0; i < 3; i++) {
	450	gvar = g_variant_new_double(ch_spec->voltage[i]);
	451	g_variant_builder_add_value(&gvb, gvar);
	452	}
	453	*data = g_variant_builder_end(&gvb);
	454	break;
	455	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	456	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	457	/* Min, max, step. */
	458	for (i = 0; i < 3; i++) {
	459	ch_spec = &(devc->device->channels[ch->index]);
	460	gvar = g_variant_new_double(ch_spec->current[i]);
	461	g_variant_builder_add_value(&gvb, gvar);
	462	}
	463	*data = g_variant_builder_end(&gvb);
	464	break;
	465	default:
	466	return SR_ERR_NA;
	467	}
	468	}
	469
	470	return ret;
	471	}
	472
	473	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	474	void *cb_data)
	475	{
	476	struct dev_context *devc;
	477	struct sr_scpi_dev_inst *scpi;
	478	struct sr_channel *ch;
	479	struct pps_channel *pch;
	480	int cmd, ret;
	481
	482	if (sdi->status != SR_ST_ACTIVE)
	483	return SR_ERR_DEV_CLOSED;
	484
	485	devc = sdi->priv;
	486	scpi = sdi->conn;
	487	devc->cb_data = cb_data;
	488
	489	if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
	490	scpi_pps_receive_data, (void *)sdi)) != SR_OK)
	491	return ret;
	492	std_session_send_df_header(sdi, LOG_PREFIX);
	493
	494	/* Prime the pipe with the first channel's fetch. */
	495	ch = sdi->channels->data;
	496	pch = ch->priv;
	497	select_channel(sdi, ch);
	498	if (pch->mq == SR_MQ_VOLTAGE)
	499	cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
	500	else if (pch->mq == SR_MQ_CURRENT)
	501	cmd = SCPI_CMD_GET_MEAS_CURRENT;
	502	else if (pch->mq == SR_MQ_POWER)
	503	cmd = SCPI_CMD_GET_MEAS_POWER;
	504	else
	505	return SR_ERR;
	506	scpi_cmd(sdi, cmd, pch->hwname);
	507
	508	return SR_OK;
	509	}
	510
	511	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	512	{
	513	struct sr_datafeed_packet packet;
	514	struct sr_scpi_dev_inst *scpi;
	515	float f;
	516
	517	(void)cb_data;
	518
	519	if (sdi->status != SR_ST_ACTIVE)
	520	return SR_ERR_DEV_CLOSED;
	521
	522	scpi = sdi->conn;
	523
	524	/*
	525	* A requested value is certainly on the way. Retrieve it now,
	526	* to avoid leaving the device in a state where it's not expecting
	527	* commands.
	528	*/
	529	sr_scpi_get_float(scpi, NULL, &f);
	530	sr_scpi_source_remove(sdi->session, scpi);
	531
	532	packet.type = SR_DF_END;
	533	sr_session_send(sdi, &packet);
	534
	535	return SR_OK;
	536	}
	537
	538	SR_PRIV struct sr_dev_driver scpi_pps_driver_info = {
	539	.name = "scpi-pps",
	540	.longname = "SCPI PPS",
	541	.api_version = 1,
	542	.init = init,
	543	.cleanup = cleanup,
	544	.scan = scan,
	545	.dev_list = dev_list,
	546	.dev_clear = dev_clear,
	547	.config_get = config_get,
	548	.config_set = config_set,
	549	.config_list = config_list,
	550	.dev_open = dev_open,
	551	.dev_close = dev_close,
	552	.dev_acquisition_start = dev_acquisition_start,
	553	.dev_acquisition_stop = dev_acquisition_stop,
	554	.priv = NULL,
	555	};