[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 int32_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, old_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(0, 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. */
		old_idx = ch_idx;
		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);
		}
		if (ch_idx == old_idx) {
			/*
			 * Didn't create any channels for this hardware output.
			 * This can happen if the device has no measurement capability.
			 */
			g_free(pch);
			continue;
		}
	}

	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 devices commonly lock the panel keys when accessed remotely. */
	scpi_cmd(sdi, SCPI_CMD_KEY_UNLOCK);
	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;

	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_KEY_UNLOCK);
		sr_scpi_close(scpi);
		sdi->status = SR_ST_INACTIVE;
	}

	return SR_OK;
}

static int cleanup(void)
{
	return SR_OK;
}

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

	if (!sdi)
		return SR_ERR_ARG;

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

	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;
			}
		}

		ch = cg->channels->data;
		pch = ch->priv;
	}

	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_MAX:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_VOLTAGE_MAX;
		break;
	case SR_CONF_OUTPUT_CURRENT:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_MEAS_CURRENT;
		break;
	case SR_CONF_OUTPUT_CURRENT_MAX:
		gvtype = G_VARIANT_TYPE_DOUBLE;
		cmd = SCPI_CMD_GET_CURRENT_MAX;
		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;
	}
	if (gvtype) {
		if (cg)
			ret = scpi_cmd_resp(sdi, data, gvtype, cmd, pch->hwname);
		else
			ret = scpi_cmd_resp(sdi, data, gvtype, cmd);
	} else if (cg) {
		switch (key) {
		case SR_CONF_OUTPUT_REGULATION:
			ret = SR_ERR;
			if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_REGULATION, pch->hwname) == SR_OK) {
				if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
					if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) {
						sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
					} else {
						*data = g_variant_new_string(s);
						g_free(s);
						ret = SR_OK;
					}
				}
			}
			break;
		default:
			ret = SR_ERR_NA;
		}
	} else
		ret = SR_ERR_NA;

	return ret;
}

static int config_set(int key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct sr_channel *ch;
	struct pps_channel *pch;
	double d;
	int ret;
	const char *s;

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

	ret = SR_OK;
	if (!cg) {
		switch (key) {
		/* No channel group: global options. */
		case SR_CONF_OUTPUT_ENABLED:
			s = g_variant_get_boolean(data) ? "ON" : "OFF";
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, s);
			break;
		case SR_CONF_OUTPUT_VOLTAGE_MAX:
			d = g_variant_get_double(data);
			ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, d);
			break;
		case SR_CONF_OUTPUT_CURRENT_MAX:
			d = g_variant_get_double(data);
			ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, d);
			break;
		case SR_CONF_OVER_TEMPERATURE_PROTECTION:
			s = g_variant_get_boolean(data) ? "ON" : "OFF";
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION, s);
			break;
		default:
			ret = SR_ERR_NA;
		}
	} else {
		/* Channel group specified. */
		if (!sdi)
			return SR_ERR_ARG;
		if (g_slist_length(cg->channels) > 1)
			return SR_ERR_NA;
		ch = cg->channels->data;
		pch = ch->priv;
		switch (key) {
		case SR_CONF_OUTPUT_ENABLED:
			s = g_variant_get_boolean(data) ? "ON" : "OFF";
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, pch->hwname, s);
			break;
		case SR_CONF_OUTPUT_VOLTAGE_MAX:
			d = g_variant_get_double(data);
			ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, pch->hwname, d);
			break;
		case SR_CONF_OUTPUT_CURRENT_MAX:
			d = g_variant_get_double(data);
			ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, pch->hwname, d);
			break;
		case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
			s = g_variant_get_boolean(data) ? "ON" : "OFF";
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLED,
					pch->hwname, s);
			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,
					pch->hwname, d);
			break;
		case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
			s = g_variant_get_boolean(data) ? "ON" : "OFF";
			ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLED,
					pch->hwname, s);
			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,
					pch->hwname, d);
			break;
		default:
			ret = SR_ERR_NA;
		}
	}

	return ret;
}

static int config_list(int 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_INT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(int32_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_INT32,
					devc->device->devopts, devc->device->num_devopts,
					sizeof(int32_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_INT32,
					devc->device->devopts_cg, devc->device->num_devopts_cg,
					sizeof(int32_t));
			break;
		case SR_CONF_OUTPUT_VOLTAGE_MAX:
			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_MAX:
			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;
	devc->cur_channel = 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_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);

	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 int32_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, old_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(0, 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	old_idx = ch_idx;
	99	for (i = 0; i < ARRAY_SIZE(pci); i++) {
	100	if (!scpi_cmd_get(sdi, pci[i].command))
	101	continue;
	102	g_snprintf(ch_name, 16, "%s%s", pci[i].prefix,
	103	device->channels[ch_num].name);
	104	ch = sr_channel_new(ch_idx++, SR_CHANNEL_ANALOG, TRUE, ch_name);
	105	pch = g_malloc0(sizeof(struct pps_channel));
	106	pch->hw_output_idx = ch_num;
	107	pch->hwname = device->channels[ch_num].name;
	108	pch->mq = pci[i].mq;
	109	ch->priv = pch;
	110	sdi->channels = g_slist_append(sdi->channels, ch);
	111	}
	112	if (ch_idx == old_idx) {
	113	/*
	114	* Didn't create any channels for this hardware output.
	115	* This can happen if the device has no measurement capability.
	116	*/
	117	g_free(pch);
	118	continue;
	119	}
	120	}
	121
	122	for (i = 0; i < device->num_channel_groups; i++) {
	123	cgs = &device->channel_groups[i];
	124	cg = g_malloc0(sizeof(struct sr_channel_group));
	125	cg->name = g_strdup(cgs->name);
	126	for (j = 0, mask = 1; j < 64; j++, mask <<= 1) {
	127	if (cgs->channel_index_mask & mask) {
	128	for (l = sdi->channels; l; l = l->next) {
	129	ch = l->data;
	130	pch = ch->priv;
	131	if (pch->hw_output_idx == j)
	132	cg->channels = g_slist_append(cg->channels, ch);
	133	}
	134	}
	135	}
	136	pcg = g_malloc0(sizeof(struct pps_channel_group));
	137	pcg->features = cgs->features;
	138	cg->priv = pcg;
	139	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	140	}
	141
	142	/* SCPI devices commonly lock the panel keys when accessed remotely. */
	143	scpi_cmd(sdi, SCPI_CMD_KEY_UNLOCK);
	144	sr_scpi_close(scpi);
	145
	146	return sdi;
	147	}
	148
	149	static GSList scan(GSList options)
	150	{
	151	return sr_scpi_scan(di->priv, options, probe_device);
	152	}
	153
	154	static GSList *dev_list(void)
	155	{
	156	return ((struct drv_context *)(di->priv))->instances;
	157	}
	158
	159	static int dev_clear(void)
	160	{
	161	return std_dev_clear(di, NULL);
	162	}
	163
	164	static int dev_open(struct sr_dev_inst *sdi)
	165	{
	166	struct sr_scpi_dev_inst *scpi;
	167
	168	if (sdi->status != SR_ST_ACTIVE)
	169	return SR_ERR;
	170
	171	scpi = sdi->conn;
	172	if (sr_scpi_open(scpi) < 0)
	173	return SR_ERR;
	174
	175	sdi->status = SR_ST_ACTIVE;
	176
	177	return SR_OK;
	178	}
	179
	180	static int dev_close(struct sr_dev_inst *sdi)
	181	{
	182	struct sr_scpi_dev_inst *scpi;
	183
	184	if (sdi->status != SR_ST_ACTIVE)
	185	return SR_ERR_DEV_CLOSED;
	186
	187	scpi = sdi->conn;
	188	if (scpi) {
	189	scpi_cmd(sdi, SCPI_CMD_KEY_UNLOCK);
	190	sr_scpi_close(scpi);
	191	sdi->status = SR_ST_INACTIVE;
	192	}
	193
	194	return SR_OK;
	195	}
	196
	197	static int cleanup(void)
	198	{
	199	return SR_OK;
	200	}
	201
	202	static int config_get(int key, GVariant *data, const struct sr_dev_inst sdi,
	203	const struct sr_channel_group *cg)
	204	{
	205	struct dev_context *devc;
	206	struct sr_scpi_dev_inst *scpi;
	207	struct sr_channel *ch;
	208	struct pps_channel *pch;
	209	const GVariantType *gvtype;
	210	unsigned int i;
	211	int cmd, ret;
	212	char *s;
	213
	214	if (!sdi)
	215	return SR_ERR_ARG;
	216
	217	devc = sdi->priv;
	218	scpi = sdi->conn;
	219
	220	if (cg) {
	221	/*
	222	* These options only apply to channel groups with a single
	223	* channel -- they're per-channel settings for the device.
	224	*/
	225
	226	/*
	227	* Config keys are handled below depending on whether a channel
	228	* group was provided by the frontend. However some of these
	229	* take a CG on one PPS but not on others. Check the device's
	230	* profile for that here, and NULL out the channel group as needed.
	231	*/
	232	for (i = 0; i < devc->device->num_devopts; i++) {
	233	if (devc->device->devopts[i] == key) {
	234	cg = NULL;
	235	break;
	236	}
	237	}
	238
	239	ch = cg->channels->data;
	240	pch = ch->priv;
	241	}
	242
	243	gvtype = NULL;
	244	cmd = -1;
	245	switch (key) {
	246	case SR_CONF_OUTPUT_ENABLED:
	247	gvtype = G_VARIANT_TYPE_BOOLEAN;
	248	cmd = SCPI_CMD_GET_OUTPUT_ENABLED;
	249	break;
	250	case SR_CONF_OUTPUT_VOLTAGE:
	251	gvtype = G_VARIANT_TYPE_DOUBLE;
	252	cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
	253	break;
	254	case SR_CONF_OUTPUT_VOLTAGE_MAX:
	255	gvtype = G_VARIANT_TYPE_DOUBLE;
	256	cmd = SCPI_CMD_GET_VOLTAGE_MAX;
	257	break;
	258	case SR_CONF_OUTPUT_CURRENT:
	259	gvtype = G_VARIANT_TYPE_DOUBLE;
	260	cmd = SCPI_CMD_GET_MEAS_CURRENT;
	261	break;
	262	case SR_CONF_OUTPUT_CURRENT_MAX:
	263	gvtype = G_VARIANT_TYPE_DOUBLE;
	264	cmd = SCPI_CMD_GET_CURRENT_MAX;
	265	break;
	266	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	267	gvtype = G_VARIANT_TYPE_BOOLEAN;
	268	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ENABLED;
	269	break;
	270	case SR_CONF_OVER_VOLTAGE_PROTECTION_ACTIVE:
	271	gvtype = G_VARIANT_TYPE_BOOLEAN;
	272	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_ACTIVE;
	273	break;
	274	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
	275	gvtype = G_VARIANT_TYPE_DOUBLE;
	276	cmd = SCPI_CMD_GET_OVER_VOLTAGE_PROTECTION_THRESHOLD;
	277	break;
	278	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	279	gvtype = G_VARIANT_TYPE_BOOLEAN;
	280	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ENABLED;
	281	break;
	282	case SR_CONF_OVER_CURRENT_PROTECTION_ACTIVE:
	283	gvtype = G_VARIANT_TYPE_BOOLEAN;
	284	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_ACTIVE;
	285	break;
	286	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
	287	gvtype = G_VARIANT_TYPE_DOUBLE;
	288	cmd = SCPI_CMD_GET_OVER_CURRENT_PROTECTION_THRESHOLD;
	289	break;
	290	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
	291	gvtype = G_VARIANT_TYPE_BOOLEAN;
	292	cmd = SCPI_CMD_GET_OVER_TEMPERATURE_PROTECTION;
	293	break;
	294	}
	295	if (gvtype) {
	296	if (cg)
	297	ret = scpi_cmd_resp(sdi, data, gvtype, cmd, pch->hwname);
	298	else
	299	ret = scpi_cmd_resp(sdi, data, gvtype, cmd);
	300	} else if (cg) {
	301	switch (key) {
	302	case SR_CONF_OUTPUT_REGULATION:
	303	ret = SR_ERR;
	304	if (scpi_cmd(sdi, SCPI_CMD_GET_OUTPUT_REGULATION, pch->hwname) == SR_OK) {
	305	if (sr_scpi_get_string(scpi, NULL, &s) == SR_OK) {
	306	if (strcmp(s, "CC") && strcmp(s, "CV") && strcmp(s, "UR")) {
	307	sr_dbg("Unknown response to SCPI_CMD_GET_OUTPUT_REGULATION: %s", s);
	308	} else {
	309	*data = g_variant_new_string(s);
	310	g_free(s);
	311	ret = SR_OK;
	312	}
	313	}
	314	}
	315	break;
	316	default:
	317	ret = SR_ERR_NA;
	318	}
	319	} else
	320	ret = SR_ERR_NA;
	321
	322	return ret;
	323	}
	324
	325	static int config_set(int key, GVariant data, const struct sr_dev_inst sdi,
	326	const struct sr_channel_group *cg)
	327	{
	328	struct sr_channel *ch;
	329	struct pps_channel *pch;
	330	double d;
	331	int ret;
	332	const char *s;
	333
	334	if (sdi->status != SR_ST_ACTIVE)
	335	return SR_ERR_DEV_CLOSED;
	336
	337	ret = SR_OK;
	338	if (!cg) {
	339	switch (key) {
	340	/* No channel group: global options. */
	341	case SR_CONF_OUTPUT_ENABLED:
	342	s = g_variant_get_boolean(data) ? "ON" : "OFF";
	343	ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, s);
	344	break;
	345	case SR_CONF_OUTPUT_VOLTAGE_MAX:
	346	d = g_variant_get_double(data);
	347	ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, d);
	348	break;
	349	case SR_CONF_OUTPUT_CURRENT_MAX:
	350	d = g_variant_get_double(data);
	351	ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, d);
	352	break;
	353	case SR_CONF_OVER_TEMPERATURE_PROTECTION:
	354	s = g_variant_get_boolean(data) ? "ON" : "OFF";
	355	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_TEMPERATURE_PROTECTION, s);
	356	break;
	357	default:
	358	ret = SR_ERR_NA;
	359	}
	360	} else {
	361	/* Channel group specified. */
	362	if (!sdi)
	363	return SR_ERR_ARG;
	364	if (g_slist_length(cg->channels) > 1)
	365	return SR_ERR_NA;
	366	ch = cg->channels->data;
	367	pch = ch->priv;
	368	switch (key) {
	369	case SR_CONF_OUTPUT_ENABLED:
	370	s = g_variant_get_boolean(data) ? "ON" : "OFF";
	371	ret = scpi_cmd(sdi, SCPI_CMD_SET_OUTPUT_ENABLED, pch->hwname, s);
	372	break;
	373	case SR_CONF_OUTPUT_VOLTAGE_MAX:
	374	d = g_variant_get_double(data);
	375	ret = scpi_cmd(sdi, SCPI_CMD_SET_VOLTAGE_MAX, pch->hwname, d);
	376	break;
	377	case SR_CONF_OUTPUT_CURRENT_MAX:
	378	d = g_variant_get_double(data);
	379	ret = scpi_cmd(sdi, SCPI_CMD_SET_CURRENT_MAX, pch->hwname, d);
	380	break;
	381	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	382	s = g_variant_get_boolean(data) ? "ON" : "OFF";
	383	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_ENABLED,
	384	pch->hwname, s);
	385	break;
	386	case SR_CONF_OVER_VOLTAGE_PROTECTION_THRESHOLD:
	387	d = g_variant_get_double(data);
	388	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_VOLTAGE_PROTECTION_THRESHOLD,
	389	pch->hwname, d);
	390	break;
	391	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	392	s = g_variant_get_boolean(data) ? "ON" : "OFF";
	393	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_ENABLED,
	394	pch->hwname, s);
	395	break;
	396	case SR_CONF_OVER_CURRENT_PROTECTION_THRESHOLD:
	397	d = g_variant_get_double(data);
	398	ret = scpi_cmd(sdi, SCPI_CMD_SET_OVER_CURRENT_PROTECTION_THRESHOLD,
	399	pch->hwname, d);
	400	break;
	401	default:
	402	ret = SR_ERR_NA;
	403	}
	404	}
	405
	406	return ret;
	407	}
	408
	409	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi,
	410	const struct sr_channel_group *cg)
	411	{
	412	struct dev_context *devc;
	413	struct sr_channel *ch;
	414	struct channel_spec *ch_spec;
	415	GVariant *gvar;
	416	GVariantBuilder gvb;
	417	int ret, i;
	418	const char *s[16];
	419
	420	/* Always available, even without sdi. */
	421	if (key == SR_CONF_SCAN_OPTIONS) {
	422	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	423	scanopts, ARRAY_SIZE(scanopts), sizeof(int32_t));
	424	return SR_OK;
	425	}
	426
	427	if (!sdi)
	428	return SR_ERR_ARG;
	429	devc = sdi->priv;
	430
	431	ret = SR_OK;
	432	if (!cg) {
	433	/* No channel group: global options. */
	434	switch (key) {
	435	case SR_CONF_DEVICE_OPTIONS:
	436	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	437	devc->device->devopts, devc->device->num_devopts,
	438	sizeof(int32_t));
	439	break;
	440	case SR_CONF_OUTPUT_CHANNEL_CONFIG:
	441	/* Not used. */
	442	i = 0;
	443	if (devc->device->features & PPS_INDEPENDENT)
	444	s[i++] = "Independent";
	445	if (devc->device->features & PPS_SERIES)
	446	s[i++] = "Series";
	447	if (devc->device->features & PPS_PARALLEL)
	448	s[i++] = "Parallel";
	449	if (i == 0) {
	450	/*
	451	* Shouldn't happen: independent-only devices
	452	* shouldn't advertise this option at all.
	453	*/
	454	return SR_ERR_NA;
	455	}
	456	*data = g_variant_new_strv(s, i);
	457	break;
	458	default:
	459	return SR_ERR_NA;
	460	}
	461	} else {
	462	/* Channel group specified. */
	463	/*
	464	* Per-channel-group options depending on a channel are actually
	465	* done with the first channel. Channel groups in PPS can have
	466	* more than one channel, but they will typically be of equal
	467	* specification for use in series or parallel mode.
	468	*/
	469	ch = cg->channels->data;
	470
	471	switch (key) {
	472	case SR_CONF_DEVICE_OPTIONS:
	473	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	474	devc->device->devopts_cg, devc->device->num_devopts_cg,
	475	sizeof(int32_t));
	476	break;
	477	case SR_CONF_OUTPUT_VOLTAGE_MAX:
	478	ch_spec = &(devc->device->channels[ch->index]);
	479	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	480	/* Min, max, write resolution. */
	481	for (i = 0; i < 3; i++) {
	482	gvar = g_variant_new_double(ch_spec->voltage[i]);
	483	g_variant_builder_add_value(&gvb, gvar);
	484	}
	485	*data = g_variant_builder_end(&gvb);
	486	break;
	487	case SR_CONF_OUTPUT_CURRENT_MAX:
	488	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	489	/* Min, max, step. */
	490	for (i = 0; i < 3; i++) {
	491	ch_spec = &(devc->device->channels[ch->index]);
	492	gvar = g_variant_new_double(ch_spec->current[i]);
	493	g_variant_builder_add_value(&gvb, gvar);
	494	}
	495	*data = g_variant_builder_end(&gvb);
	496	break;
	497	default:
	498	return SR_ERR_NA;
	499	}
	500	}
	501
	502	return ret;
	503	}
	504
	505	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	506	void *cb_data)
	507	{
	508	struct dev_context *devc;
	509	struct sr_scpi_dev_inst *scpi;
	510	struct sr_channel *ch;
	511	struct pps_channel *pch;
	512	int cmd, ret;
	513
	514	if (sdi->status != SR_ST_ACTIVE)
	515	return SR_ERR_DEV_CLOSED;
	516
	517	devc = sdi->priv;
	518	scpi = sdi->conn;
	519	devc->cb_data = cb_data;
	520
	521	if ((ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
	522	scpi_pps_receive_data, (void *)sdi)) != SR_OK)
	523	return ret;
	524	std_session_send_df_header(sdi, LOG_PREFIX);
	525
	526	/* Prime the pipe with the first channel's fetch. */
	527	ch = sdi->channels->data;
	528	pch = ch->priv;
	529	devc->cur_channel = ch;
	530	if (pch->mq == SR_MQ_VOLTAGE)
	531	cmd = SCPI_CMD_GET_MEAS_VOLTAGE;
	532	else if (pch->mq == SR_MQ_CURRENT)
	533	cmd = SCPI_CMD_GET_MEAS_CURRENT;
	534	else if (pch->mq == SR_MQ_POWER)
	535	cmd = SCPI_CMD_GET_MEAS_POWER;
	536	else
	537	return SR_ERR;
	538	scpi_cmd(sdi, cmd, pch->hwname);
	539
	540	return SR_OK;
	541	}
	542
	543	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	544	{
	545	struct sr_scpi_dev_inst *scpi;
	546	float f;
	547
	548	(void)cb_data;
	549
	550	if (sdi->status != SR_ST_ACTIVE)
	551	return SR_ERR_DEV_CLOSED;
	552
	553	scpi = sdi->conn;
	554
	555	/*
	556	* A requested value is certainly on the way. Retrieve it now,
	557	* to avoid leaving the device in a state where it's not expecting
	558	* commands.
	559	*/
	560	sr_scpi_get_float(scpi, NULL, &f);
	561	sr_scpi_source_remove(sdi->session, scpi);
	562
	563	return SR_OK;
	564	}
	565
	566	SR_PRIV struct sr_dev_driver scpi_pps_driver_info = {
	567	.name = "scpi-pps",
	568	.longname = "SCPI PPS",
	569	.api_version = 1,
	570	.init = init,
	571	.cleanup = cleanup,
	572	.scan = scan,
	573	.dev_list = dev_list,
	574	.dev_clear = dev_clear,
	575	.config_get = config_get,
	576	.config_set = config_set,
	577	.config_list = config_list,
	578	.dev_open = dev_open,
	579	.dev_close = dev_close,
	580	.dev_acquisition_start = dev_acquisition_start,
	581	.dev_acquisition_stop = dev_acquisition_stop,
	582	.priv = NULL,
	583	};