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

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2018 Gerhard Sittig <gerhard.sittig@gmx.net>
 *
 * 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"

static struct sr_dev_driver scpi_dmm_driver_info;

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

static const uint32_t drvopts[] = {
	SR_CONF_MULTIMETER,
};

static const uint32_t devopts_generic[] = {
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const struct scpi_command cmdset_agilent[] = {
	{ DMM_CMD_SETUP_REMOTE, "\n", },
	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	{ DMM_CMD_START_ACQ, "MEAS", },
	{ DMM_CMD_STOP_ACQ, "ABORT", },
	{ DMM_CMD_QUERY_VALUE, "READ?", },
	{ DMM_CMD_QUERY_PREC, "CONF?", },
	ALL_ZERO,
};

/*
 * cmdset_hp is used for the 34401A, which was added to this code after the
 * 34405A and 34465A. It differs in starting the measurement with INIT: using
 * MEAS without a trailing '?' (as used for the 34405A) is not valid for the
 * 34401A and gives an error.
 * I'm surprised the same instruction sequence doesn't work and INIT may
 * work for both, but I don't have the others to re-test.
 *
 * cmdset_hp also works well for the 34410A, using cmdset_agilent throws an
 * error on 'MEAS' without a '?'.
 *
 * On the 34401A,
 *  MEAS <optional parameters> ? configures, arms, triggers and waits
 *       for a reading
 *  CONF <parameters> configures
 *  INIT prepares for triggering (trigger mode is not set, assumed
 *       internal - external might time out)
 *  *OPC waits for completion, and
 *  READ? retrieves the result
 */
static const struct scpi_command cmdset_hp[] = {
	{ DMM_CMD_SETUP_REMOTE, "\n", },
	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	{ DMM_CMD_START_ACQ, "INIT", },
	{ DMM_CMD_STOP_ACQ, "ABORT", },
	{ DMM_CMD_QUERY_VALUE, "READ?", },
	{ DMM_CMD_QUERY_PREC, "CONF?", },
	ALL_ZERO,
};

static const struct scpi_command cmdset_gwinstek[] = {
	{ DMM_CMD_SETUP_REMOTE, "SYST:REM", },
	{ DMM_CMD_SETUP_LOCAL, "SYST:LOC", },
	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	{ DMM_CMD_QUERY_FUNC, "CONF:STAT:FUNC?", },
	{ DMM_CMD_START_ACQ, "*CLS;SYST:REM", },
	{ DMM_CMD_STOP_ACQ, "SYST:LOC", },
	{ DMM_CMD_QUERY_VALUE, "VAL1?", },
	{ DMM_CMD_QUERY_PREC, "SENS:DET:RATE?", },
	ALL_ZERO,
};

static const struct scpi_command cmdset_gwinstek_906x[] = {
	{ DMM_CMD_SETUP_REMOTE, "SYST:REM", },
	{ DMM_CMD_SETUP_LOCAL, "SYST:LOC", },
	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	{ DMM_CMD_START_ACQ, "*CLS;SYST:REM", },
	{ DMM_CMD_STOP_ACQ, "SYST:LOC", },
	{ DMM_CMD_QUERY_VALUE, "VAL1?", },
	{ DMM_CMD_QUERY_PREC, "SENS:DET:RATE?", },
	ALL_ZERO,
};

static const struct mqopt_item mqopts_agilent_34405a[] = {
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC ", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC ", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, 0, "RES", "RES ", NO_DFLT_PREC, },
	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	{ SR_MQ_CAPACITANCE, 0, "CAP", "CAP ", NO_DFLT_PREC, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	{ SR_MQ_TEMPERATURE, 0, "TEMP", "TEMP ", NO_DFLT_PREC, },
	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ ", NO_DFLT_PREC, },
};

static const struct mqopt_item mqopts_agilent_34401a[] = {
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC ", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC ", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, 0, "RES", "RES ", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "FRES ", NO_DFLT_PREC, },
	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ ", NO_DFLT_PREC, },
	{ SR_MQ_TIME, 0, "PER", "PER ", NO_DFLT_PREC, },
};

static const struct mqopt_item mqopts_gwinstek_gdm8200a[] = {
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "01", NO_DFLT_PREC, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "02", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "03", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "04", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "05", NO_DFLT_PREC, }, /* mA */
	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "06", NO_DFLT_PREC, }, /* mA */
	{ SR_MQ_RESISTANCE, 0, "RES", "07", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "16", NO_DFLT_PREC, },
	{ SR_MQ_CONTINUITY, 0, "CONT", "13", -1, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_DIODE, "DIOD", "17", -4, },
	{ SR_MQ_TEMPERATURE, 0, "TEMP", "09", NO_DFLT_PREC, }, /* Celsius */
	{ SR_MQ_TEMPERATURE, 0, "TEMP", "15", NO_DFLT_PREC, }, /* Fahrenheit */
	{ SR_MQ_FREQUENCY, 0, "FREQ", "08", NO_DFLT_PREC, },
	{ SR_MQ_TIME, 0, "PER", "14", NO_DFLT_PREC, },
};

static const struct mqopt_item mqopts_gwinstek_gdm906x[] = {
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, 0, "RES", "RES", NO_DFLT_PREC, },
	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "FRES", NO_DFLT_PREC, },
	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC | SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	{ SR_MQ_TEMPERATURE, 0, "TEMP", "TEMP", NO_DFLT_PREC, },
	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ", NO_DFLT_PREC, },
	{ SR_MQ_TIME, 0, "PER", "PER", NO_DFLT_PREC, },
	{ SR_MQ_CAPACITANCE, 0, "CAP", "CAP", NO_DFLT_PREC, },
};

SR_PRIV const struct scpi_dmm_model models[] = {
	{
		"Agilent", "34405A",
		1, 5, cmdset_agilent, ARRAY_AND_SIZE(mqopts_agilent_34405a),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		0,
	},
	{
		"Agilent", "34410A",
		1, 6, cmdset_hp, ARRAY_AND_SIZE(mqopts_agilent_34405a),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		0,
	},
	{
		"GW", "GDM8251A",
		1, 6, cmdset_gwinstek, ARRAY_AND_SIZE(mqopts_gwinstek_gdm8200a),
		scpi_dmm_get_meas_gwinstek,
		ARRAY_AND_SIZE(devopts_generic),
		1000 * 2500,
	},
	{
		"GW", "GDM8255A",
		1, 6, cmdset_gwinstek, ARRAY_AND_SIZE(mqopts_gwinstek_gdm8200a),
		scpi_dmm_get_meas_gwinstek,
		ARRAY_AND_SIZE(devopts_generic),
		1000 * 2500,
	},
	{
		"GWInstek", "GDM9060",
		1, 6, cmdset_gwinstek_906x, ARRAY_AND_SIZE(mqopts_gwinstek_gdm906x),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		0,
	},
	{
		"GWInstek", "GDM9061",
		1, 6, cmdset_gwinstek_906x, ARRAY_AND_SIZE(mqopts_gwinstek_gdm906x),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		0,
	},
	{
		"HP", "34401A",
		1, 6, cmdset_hp, ARRAY_AND_SIZE(mqopts_agilent_34401a),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		/* 34401A: typ. 1020ms for AC readings (default is 1000ms). */
		1000 * 1500,
	},
	{
		"Keysight", "34465A",
		1, 5, cmdset_agilent, ARRAY_AND_SIZE(mqopts_agilent_34405a),
		scpi_dmm_get_meas_agilent,
		ARRAY_AND_SIZE(devopts_generic),
		0,
	},
};

static const struct scpi_dmm_model *is_compatible(const char *vendor, const char *model)
{
	size_t i;
	const struct scpi_dmm_model *entry;

	for (i = 0; i < ARRAY_SIZE(models); i++) {
		entry = &models[i];
		if (!entry->vendor || !entry->model)
			continue;
		if (strcmp(vendor, entry->vendor) != 0)
			continue;
		if (strcmp(model, entry->model) != 0)
			continue;
		return entry;
	}

	return NULL;
}

static struct sr_dev_inst *probe_device(struct sr_scpi_dev_inst *scpi)
{
	struct sr_scpi_hw_info *hw_info;
	int ret;
	const char *vendor;
	const struct scpi_dmm_model *model;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	size_t i;
	gchar *channel_name;
	const char *command;

	scpi_dmm_cmd_delay(scpi);
	ret = sr_scpi_get_hw_id(scpi, &hw_info);
	if (ret != SR_OK) {
		sr_info("Could not get IDN response.");
		return NULL;
	}
	vendor = sr_vendor_alias(hw_info->manufacturer);
	model = is_compatible(vendor, hw_info->model);
	if (!model) {
		sr_scpi_hw_info_free(hw_info);
		return NULL;
	}

	sdi = g_malloc0(sizeof(*sdi));
	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->conn = scpi;
	sdi->driver = &scpi_dmm_driver_info;
	sdi->inst_type = SR_INST_SCPI;
	sr_scpi_hw_info_free(hw_info);
	if (model->read_timeout_us)  /* non-default read timeout */
		scpi->read_timeout_us = model->read_timeout_us;
	devc = g_malloc0(sizeof(*devc));
	sdi->priv = devc;
	devc->num_channels = model->num_channels;
	devc->cmdset = model->cmdset;
	devc->model = model;

	for (i = 0; i < devc->num_channels; i++) {
		channel_name = g_strdup_printf("P%zu", i + 1);
		sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, channel_name);
	}

	/*
	 * If device has DMM_CMD_SETUP_LOCAL command, send it now. To avoid
	 * leaving device in remote mode (if only a "scan" is run).
	 */
	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_SETUP_LOCAL);
	if (command && *command) {
		scpi_dmm_cmd_delay(scpi);
		sr_scpi_send(scpi, command);
	}

	return sdi;
}

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

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

	scpi = sdi->conn;
	ret = sr_scpi_open(scpi);
	if (ret < 0) {
		sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
		return SR_ERR;
	}

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_scpi_dev_inst *scpi;
	const char *command;

	devc = sdi->priv;
	scpi = sdi->conn;
	if (!scpi)
		return SR_ERR_BUG;

	sr_dbg("DIAG: sdi->status %d.", sdi->status - SR_ST_NOT_FOUND);
	if (sdi->status <= SR_ST_INACTIVE)
		return SR_OK;

	/*
	 * If device has DMM_CMD_SETUP_LOCAL command, send it now
	 * to avoid leaving device in remote mode.
	 */
	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_SETUP_LOCAL);
	if (command && *command) {
		scpi_dmm_cmd_delay(scpi);
		sr_scpi_send(scpi, command);
	}

	return sr_scpi_close(scpi);
}

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;
	enum sr_mq mq;
	enum sr_mqflag mqflag;
	GVariant *arr[2];
	int ret;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_get(&devc->limits, key, data);
	case SR_CONF_MEASURED_QUANTITY:
		ret = scpi_dmm_get_mq(sdi, &mq, &mqflag, NULL, NULL);
		if (ret != SR_OK)
			return ret;
		arr[0] = g_variant_new_uint32(mq);
		arr[1] = g_variant_new_uint64(mqflag);
		*data = g_variant_new_tuple(arr, ARRAY_SIZE(arr));
		return SR_OK;
	default:
		return SR_ERR_NA;
	}
}

static int config_set(uint32_t key, GVariant *data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	enum sr_mq mq;
	enum sr_mqflag mqflag;
	GVariant *tuple_child;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_set(&devc->limits, key, data);
	case SR_CONF_MEASURED_QUANTITY:
		tuple_child = g_variant_get_child_value(data, 0);
		mq = g_variant_get_uint32(tuple_child);
		g_variant_unref(tuple_child);
		tuple_child = g_variant_get_child_value(data, 1);
		mqflag = g_variant_get_uint64(tuple_child);
		g_variant_unref(tuple_child);
		return scpi_dmm_set_mq(sdi, mq, mqflag);
	default:
		return SR_ERR_NA;
	}
}

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;
	GVariant *gvar, *arr[2];
	GVariantBuilder gvb;
	size_t i;

	(void)cg;

	devc = sdi ? sdi->priv : NULL;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		if (!devc)
			return STD_CONFIG_LIST(key, data, sdi, cg,
				scanopts, drvopts, devopts_generic);
		return std_opts_config_list(key, data, sdi, cg,
			ARRAY_AND_SIZE(scanopts), ARRAY_AND_SIZE(drvopts),
			devc->model->devopts, devc->model->devopts_size);
	case SR_CONF_MEASURED_QUANTITY:
		/* TODO Use std_gvar_measured_quantities() when available. */
		if (!devc)
			return SR_ERR_ARG;
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		for (i = 0; i < devc->model->mqopt_size; i++) {
			arr[0] = g_variant_new_uint32(devc->model->mqopts[i].mq);
			arr[1] = g_variant_new_uint64(devc->model->mqopts[i].mqflag);
			gvar = g_variant_new_tuple(arr, ARRAY_SIZE(arr));
			g_variant_builder_add_value(&gvb, gvar);
		}
		*data = g_variant_builder_end(&gvb);
		return SR_OK;
	default:
		(void)devc;
		return SR_ERR_NA;
	}
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct sr_scpi_dev_inst *scpi;
	struct dev_context *devc;
	int ret;
	const struct mqopt_item *item;
	const char *command;
	char *response;

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

	ret = scpi_dmm_get_mq(sdi, &devc->start_acq_mq.curr_mq,
		&devc->start_acq_mq.curr_mqflag, NULL, &item);
	if (ret != SR_OK)
		return ret;

	/*
	 * Query for current precision if DMM supports the command
	 */
	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_QUERY_PREC);
	if (command && *command) {
		scpi_dmm_cmd_delay(scpi);
		ret = sr_scpi_get_string(scpi, command, &response);
		if (ret == SR_OK) {
			g_strstrip(response);
			g_free(devc->precision);
			devc->precision = g_strdup(response);
			g_free(response);
			sr_dbg("%s: Precision: '%s'", __func__, devc->precision);
		} else {
			sr_info("Precision query ('%s') failed: %d",
				command, ret);
		}
	}

	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_START_ACQ);
	if (command && *command) {
		scpi_dmm_cmd_delay(scpi);
		ret = sr_scpi_send(scpi, command);
		if (ret != SR_OK)
			return ret;
	}

	sr_sw_limits_acquisition_start(&devc->limits);
	ret = std_session_send_df_header(sdi);
	if (ret != SR_OK)
		return ret;

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

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct sr_scpi_dev_inst *scpi;
	struct dev_context *devc;
	const char *command;

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

	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_STOP_ACQ);
	if (command && *command) {
		scpi_dmm_cmd_delay(scpi);
		(void)sr_scpi_send(scpi, command);
	}
	sr_scpi_source_remove(sdi->session, scpi);

	std_session_send_df_end(sdi);

	g_free(devc->precision);
	devc->precision = NULL;

	return SR_OK;
}

static struct sr_dev_driver scpi_dmm_driver_info = {
	.name = "scpi-dmm",
	.longname = "SCPI DMM",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = std_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,
};
SR_REGISTER_DEV_DRIVER(scpi_dmm_driver_info);
Commit	Line	Data
7a396ff5 GS	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2018 Gerhard Sittig <gerhard.sittig@gmx.net>
	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
3cdad416	20	#include <string.h>
7a396ff5 GS	21	#include "protocol.h"
7a396ff5 GS	22
0617bb5a GS	23	static struct sr_dev_driver scpi_dmm_driver_info;
0617bb5a GS	24
3cdad416 GS	25	static const uint32_t scanopts[] = {
3cdad416 GS	26	SR_CONF_CONN,
31e65c62	27	SR_CONF_SERIALCOMM,
3cdad416 GS	28	};
	29
	30	static const uint32_t drvopts[] = {
	31	SR_CONF_MULTIMETER,
	32	};
	33
1d2f9963	34	static const uint32_t devopts_generic[] = {
3cdad416 GS	35	SR_CONF_CONTINUOUS,
	36	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	37	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
	38	SR_CONF_MEASURED_QUANTITY \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	39	};
	40
	41	static const struct scpi_command cmdset_agilent[] = {
	42	{ DMM_CMD_SETUP_REMOTE, "\n", },
	43	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	44	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	45	{ DMM_CMD_START_ACQ, "MEAS", },
	46	{ DMM_CMD_STOP_ACQ, "ABORT", },
	47	{ DMM_CMD_QUERY_VALUE, "READ?", },
	48	{ DMM_CMD_QUERY_PREC, "CONF?", },
	49	ALL_ZERO,
	50	};
	51
a1619831	52	/*
1c8110db	53	* cmdset_hp is used for the 34401A, which was added to this code after the
a1619831 AG	54	* 34405A and 34465A. It differs in starting the measurement with INIT: using
a1619831 AG	55	* MEAS without a trailing '?' (as used for the 34405A) is not valid for the
1c8110db FS	56	* 34401A and gives an error.
	57	* I'm surprised the same instruction sequence doesn't work and INIT may
	58	* work for both, but I don't have the others to re-test.
a1619831	59	*
85cff5cf MW	60	* cmdset_hp also works well for the 34410A, using cmdset_agilent throws an
	61	* error on 'MEAS' without a '?'.
	62	*
1c8110db FS	63	* On the 34401A,
1c8110db FS	64	* MEAS <optional parameters> ? configures, arms, triggers and waits
a1619831 AG	65	* for a reading
a1619831 AG	66	* CONF <parameters> configures
1c8110db	67	* INIT prepares for triggering (trigger mode is not set, assumed
a1619831 AG	68	* internal - external might time out)
	69	* *OPC waits for completion, and
	70	* READ? retrieves the result
	71	*/
	72	static const struct scpi_command cmdset_hp[] = {
	73	{ DMM_CMD_SETUP_REMOTE, "\n", },
	74	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	75	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	76	{ DMM_CMD_START_ACQ, "INIT", },
	77	{ DMM_CMD_STOP_ACQ, "ABORT", },
	78	{ DMM_CMD_QUERY_VALUE, "READ?", },
	79	{ DMM_CMD_QUERY_PREC, "CONF?", },
	80	ALL_ZERO,
	81	};
	82
d0b602f0 TK	83	static const struct scpi_command cmdset_gwinstek[] = {
d0b602f0 TK	84	{ DMM_CMD_SETUP_REMOTE, "SYST:REM", },
4c80a272	85	{ DMM_CMD_SETUP_LOCAL, "SYST:LOC", },
d0b602f0 TK	86	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	87	{ DMM_CMD_QUERY_FUNC, "CONF:STAT:FUNC?", },
	88	{ DMM_CMD_START_ACQ, "*CLS;SYST:REM", },
	89	{ DMM_CMD_STOP_ACQ, "SYST:LOC", },
	90	{ DMM_CMD_QUERY_VALUE, "VAL1?", },
	91	{ DMM_CMD_QUERY_PREC, "SENS:DET:RATE?", },
	92	ALL_ZERO,
	93	};
	94
868fc65e TK	95	static const struct scpi_command cmdset_gwinstek_906x[] = {
868fc65e TK	96	{ DMM_CMD_SETUP_REMOTE, "SYST:REM", },
4c80a272	97	{ DMM_CMD_SETUP_LOCAL, "SYST:LOC", },
868fc65e TK	98	{ DMM_CMD_SETUP_FUNC, "CONF:%s", },
	99	{ DMM_CMD_QUERY_FUNC, "CONF?", },
	100	{ DMM_CMD_START_ACQ, "*CLS;SYST:REM", },
	101	{ DMM_CMD_STOP_ACQ, "SYST:LOC", },
	102	{ DMM_CMD_QUERY_VALUE, "VAL1?", },
	103	{ DMM_CMD_QUERY_PREC, "SENS:DET:RATE?", },
	104	ALL_ZERO,
	105	};
	106
64d03de1	107	static const struct mqopt_item mqopts_agilent_34405a[] = {
3cdad416 GS	108	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	109	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC ", NO_DFLT_PREC, },
	110	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	111	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC ", NO_DFLT_PREC, },
	112	{ SR_MQ_RESISTANCE, 0, "RES", "RES ", NO_DFLT_PREC, },
3cdad416 GS	113	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	114	{ SR_MQ_CAPACITANCE, 0, "CAP", "CAP ", NO_DFLT_PREC, },
	115	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC \| SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	116	{ SR_MQ_TEMPERATURE, 0, "TEMP", "TEMP ", NO_DFLT_PREC, },
	117	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ ", NO_DFLT_PREC, },
	118	};
	119
a1619831 AG	120	static const struct mqopt_item mqopts_agilent_34401a[] = {
	121	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	122	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC ", NO_DFLT_PREC, },
	123	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	124	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC ", NO_DFLT_PREC, },
	125	{ SR_MQ_RESISTANCE, 0, "RES", "RES ", NO_DFLT_PREC, },
	126	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "FRES ", NO_DFLT_PREC, },
	127	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	128	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC \| SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	129	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ ", NO_DFLT_PREC, },
	130	{ SR_MQ_TIME, 0, "PER", "PER ", NO_DFLT_PREC, },
	131	};
	132
d0b602f0 TK	133	static const struct mqopt_item mqopts_gwinstek_gdm8200a[] = {
	134	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "01", NO_DFLT_PREC, },
	135	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "02", NO_DFLT_PREC, },
	136	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "03", NO_DFLT_PREC, },
	137	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "04", NO_DFLT_PREC, },
	138	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "05", NO_DFLT_PREC, }, /* mA */
	139	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "06", NO_DFLT_PREC, }, /* mA */
	140	{ SR_MQ_RESISTANCE, 0, "RES", "07", NO_DFLT_PREC, },
	141	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "16", NO_DFLT_PREC, },
	142	{ SR_MQ_CONTINUITY, 0, "CONT", "13", -1, },
	143	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC \| SR_MQFLAG_DIODE, "DIOD", "17", -4, },
	144	{ SR_MQ_TEMPERATURE, 0, "TEMP", "09", NO_DFLT_PREC, }, /* Celsius */
	145	{ SR_MQ_TEMPERATURE, 0, "TEMP", "15", NO_DFLT_PREC, }, /* Fahrenheit */
	146	{ SR_MQ_FREQUENCY, 0, "FREQ", "08", NO_DFLT_PREC, },
	147	{ SR_MQ_TIME, 0, "PER", "14", NO_DFLT_PREC, },
	148	};
	149
868fc65e TK	150	static const struct mqopt_item mqopts_gwinstek_gdm906x[] = {
	151	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC, "VOLT:DC", "VOLT ", NO_DFLT_PREC, },
	152	{ SR_MQ_VOLTAGE, SR_MQFLAG_AC, "VOLT:AC", "VOLT:AC", NO_DFLT_PREC, },
	153	{ SR_MQ_CURRENT, SR_MQFLAG_DC, "CURR:DC", "CURR ", NO_DFLT_PREC, },
	154	{ SR_MQ_CURRENT, SR_MQFLAG_AC, "CURR:AC", "CURR:AC", NO_DFLT_PREC, },
	155	{ SR_MQ_RESISTANCE, 0, "RES", "RES", NO_DFLT_PREC, },
	156	{ SR_MQ_RESISTANCE, SR_MQFLAG_FOUR_WIRE, "FRES", "FRES", NO_DFLT_PREC, },
	157	{ SR_MQ_CONTINUITY, 0, "CONT", "CONT", -1, },
	158	{ SR_MQ_VOLTAGE, SR_MQFLAG_DC \| SR_MQFLAG_DIODE, "DIOD", "DIOD", -4, },
	159	{ SR_MQ_TEMPERATURE, 0, "TEMP", "TEMP", NO_DFLT_PREC, },
	160	{ SR_MQ_FREQUENCY, 0, "FREQ", "FREQ", NO_DFLT_PREC, },
	161	{ SR_MQ_TIME, 0, "PER", "PER", NO_DFLT_PREC, },
	162	{ SR_MQ_CAPACITANCE, 0, "CAP", "CAP", NO_DFLT_PREC, },
	163	};
	164
3cdad416 GS	165	SR_PRIV const struct scpi_dmm_model models[] = {
	166	{
	167	"Agilent", "34405A",
64d03de1	168	1, 5, cmdset_agilent, ARRAY_AND_SIZE(mqopts_agilent_34405a),
3cdad416	169	scpi_dmm_get_meas_agilent,
1d2f9963	170	ARRAY_AND_SIZE(devopts_generic),
1c8110db	171	0,
3cdad416	172	},
85cff5cf MW	173	{
	174	"Agilent", "34410A",
	175	1, 6, cmdset_hp, ARRAY_AND_SIZE(mqopts_agilent_34405a),
	176	scpi_dmm_get_meas_agilent,
	177	ARRAY_AND_SIZE(devopts_generic),
	178	0,
	179	},
d0b602f0 TK	180	{
	181	"GW", "GDM8251A",
	182	1, 6, cmdset_gwinstek, ARRAY_AND_SIZE(mqopts_gwinstek_gdm8200a),
	183	scpi_dmm_get_meas_gwinstek,
	184	ARRAY_AND_SIZE(devopts_generic),
	185	1000 * 2500,
	186	},
	187	{
	188	"GW", "GDM8255A",
	189	1, 6, cmdset_gwinstek, ARRAY_AND_SIZE(mqopts_gwinstek_gdm8200a),
	190	scpi_dmm_get_meas_gwinstek,
	191	ARRAY_AND_SIZE(devopts_generic),
	192	1000 * 2500,
	193	},
868fc65e TK	194	{
	195	"GWInstek", "GDM9060",
	196	1, 6, cmdset_gwinstek_906x, ARRAY_AND_SIZE(mqopts_gwinstek_gdm906x),
	197	scpi_dmm_get_meas_agilent,
	198	ARRAY_AND_SIZE(devopts_generic),
	199	0,
	200	},
	201	{
	202	"GWInstek", "GDM9061",
	203	1, 6, cmdset_gwinstek_906x, ARRAY_AND_SIZE(mqopts_gwinstek_gdm906x),
	204	scpi_dmm_get_meas_agilent,
	205	ARRAY_AND_SIZE(devopts_generic),
	206	0,
	207	},
25879a34 GS	208	{
	209	"HP", "34401A",
	210	1, 6, cmdset_hp, ARRAY_AND_SIZE(mqopts_agilent_34401a),
	211	scpi_dmm_get_meas_agilent,
	212	ARRAY_AND_SIZE(devopts_generic),
	213	/* 34401A: typ. 1020ms for AC readings (default is 1000ms). */
	214	1000 * 1500,
	215	},
	216	{
	217	"Keysight", "34465A",
	218	1, 5, cmdset_agilent, ARRAY_AND_SIZE(mqopts_agilent_34405a),
	219	scpi_dmm_get_meas_agilent,
	220	ARRAY_AND_SIZE(devopts_generic),
	221	0,
	222	},
3cdad416 GS	223	};
	224
	225	static const struct scpi_dmm_model is_compatible(const char vendor, const char *model)
7a396ff5	226	{
3cdad416 GS	227	size_t i;
	228	const struct scpi_dmm_model *entry;
	229
	230	for (i = 0; i < ARRAY_SIZE(models); i++) {
	231	entry = &models[i];
	232	if (!entry->vendor \|\| !entry->model)
	233	continue;
	234	if (strcmp(vendor, entry->vendor) != 0)
	235	continue;
	236	if (strcmp(model, entry->model) != 0)
	237	continue;
	238	return entry;
	239	}
7a396ff5	240
3cdad416 GS	241	return NULL;
3cdad416 GS	242	}
7a396ff5	243
3cdad416 GS	244	static struct sr_dev_inst probe_device(struct sr_scpi_dev_inst scpi)
	245	{
	246	struct sr_scpi_hw_info *hw_info;
	247	int ret;
	248	const char *vendor;
	249	const struct scpi_dmm_model *model;
	250	struct sr_dev_inst *sdi;
	251	struct dev_context *devc;
	252	size_t i;
	253	gchar *channel_name;
4c80a272	254	const char *command;
3cdad416	255
3cdad416	256	scpi_dmm_cmd_delay(scpi);
28877994	257	ret = sr_scpi_get_hw_id(scpi, &hw_info);
3cdad416 GS	258	if (ret != SR_OK) {
	259	sr_info("Could not get IDN response.");
	260	return NULL;
	261	}
	262	vendor = sr_vendor_alias(hw_info->manufacturer);
	263	model = is_compatible(vendor, hw_info->model);
	264	if (!model) {
	265	sr_scpi_hw_info_free(hw_info);
	266	return NULL;
	267	}
7a396ff5	268
3cdad416 GS	269	sdi = g_malloc0(sizeof(*sdi));
	270	sdi->vendor = g_strdup(hw_info->manufacturer);
	271	sdi->model = g_strdup(hw_info->model);
	272	sdi->version = g_strdup(hw_info->firmware_version);
	273	sdi->serial_num = g_strdup(hw_info->serial_number);
	274	sdi->conn = scpi;
	275	sdi->driver = &scpi_dmm_driver_info;
	276	sdi->inst_type = SR_INST_SCPI;
	277	sr_scpi_hw_info_free(hw_info);
1c8110db	278	if (model->read_timeout_us) /* non-default read timeout */
a1619831	279	scpi->read_timeout_us = model->read_timeout_us;
3cdad416 GS	280	devc = g_malloc0(sizeof(*devc));
	281	sdi->priv = devc;
	282	devc->num_channels = model->num_channels;
	283	devc->cmdset = model->cmdset;
	284	devc->model = model;
	285
	286	for (i = 0; i < devc->num_channels; i++) {
	287	channel_name = g_strdup_printf("P%zu", i + 1);
	288	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, channel_name);
	289	}
	290
4c80a272 TK	291	/*
	292	* If device has DMM_CMD_SETUP_LOCAL command, send it now. To avoid
	293	* leaving device in remote mode (if only a "scan" is run).
	294	*/
	295	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_SETUP_LOCAL);
	296	if (command && *command) {
	297	scpi_dmm_cmd_delay(scpi);
	298	sr_scpi_send(scpi, command);
	299	}
	300
3cdad416 GS	301	return sdi;
3cdad416 GS	302	}
7a396ff5	303
3cdad416 GS	304	static GSList scan(struct sr_dev_driver di, GSList *options)
	305	{
	306	return sr_scpi_scan(di->context, options, probe_device);
7a396ff5 GS	307	}
	308
	309	static int dev_open(struct sr_dev_inst *sdi)
	310	{
3cdad416 GS	311	struct sr_scpi_dev_inst *scpi;
3cdad416 GS	312	int ret;
7a396ff5	313
3cdad416 GS	314	scpi = sdi->conn;
	315	ret = sr_scpi_open(scpi);
	316	if (ret < 0) {
	317	sr_err("Failed to open SCPI device: %s.", sr_strerror(ret));
	318	return SR_ERR;
	319	}
7a396ff5 GS	320
	321	return SR_OK;
	322	}
	323
	324	static int dev_close(struct sr_dev_inst *sdi)
	325	{
4c80a272	326	struct dev_context *devc;
3cdad416	327	struct sr_scpi_dev_inst *scpi;
4c80a272	328	const char *command;
7a396ff5	329
4c80a272	330	devc = sdi->priv;
3cdad416 GS	331	scpi = sdi->conn;
	332	if (!scpi)
	333	return SR_ERR_BUG;
7a396ff5	334
3cdad416 GS	335	sr_dbg("DIAG: sdi->status %d.", sdi->status - SR_ST_NOT_FOUND);
	336	if (sdi->status <= SR_ST_INACTIVE)
	337	return SR_OK;
	338
4c80a272 TK	339	/*
	340	* If device has DMM_CMD_SETUP_LOCAL command, send it now
	341	* to avoid leaving device in remote mode.
	342	*/
	343	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_SETUP_LOCAL);
	344	if (command && *command) {
	345	scpi_dmm_cmd_delay(scpi);
	346	sr_scpi_send(scpi, command);
	347	}
	348
3cdad416	349	return sr_scpi_close(scpi);
7a396ff5 GS	350	}
	351
	352	static int config_get(uint32_t key, GVariant **data,
	353	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	354	{
3cdad416 GS	355	struct dev_context *devc;
	356	enum sr_mq mq;
	357	enum sr_mqflag mqflag;
	358	GVariant *arr[2];
7a396ff5 GS	359	int ret;
7a396ff5 GS	360
7a396ff5 GS	361	(void)cg;
7a396ff5 GS	362
3cdad416 GS	363	devc = sdi->priv;
3cdad416 GS	364
7a396ff5	365	switch (key) {
3cdad416 GS	366	case SR_CONF_LIMIT_SAMPLES:
	367	case SR_CONF_LIMIT_MSEC:
	368	return sr_sw_limits_config_get(&devc->limits, key, data);
	369	case SR_CONF_MEASURED_QUANTITY:
08f3b427	370	ret = scpi_dmm_get_mq(sdi, &mq, &mqflag, NULL, NULL);
3cdad416 GS	371	if (ret != SR_OK)
	372	return ret;
	373	arr[0] = g_variant_new_uint32(mq);
	374	arr[1] = g_variant_new_uint64(mqflag);
	375	*data = g_variant_new_tuple(arr, ARRAY_SIZE(arr));
	376	return SR_OK;
7a396ff5 GS	377	default:
	378	return SR_ERR_NA;
	379	}
7a396ff5 GS	380	}
	381
	382	static int config_set(uint32_t key, GVariant *data,
	383	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	384	{
3cdad416 GS	385	struct dev_context *devc;
	386	enum sr_mq mq;
	387	enum sr_mqflag mqflag;
	388	GVariant *tuple_child;
7a396ff5	389
7a396ff5 GS	390	(void)cg;
7a396ff5 GS	391
3cdad416 GS	392	devc = sdi->priv;
3cdad416 GS	393
7a396ff5	394	switch (key) {
3cdad416 GS	395	case SR_CONF_LIMIT_SAMPLES:
	396	case SR_CONF_LIMIT_MSEC:
	397	return sr_sw_limits_config_set(&devc->limits, key, data);
	398	case SR_CONF_MEASURED_QUANTITY:
	399	tuple_child = g_variant_get_child_value(data, 0);
	400	mq = g_variant_get_uint32(tuple_child);
ff5fb185	401	g_variant_unref(tuple_child);
3cdad416 GS	402	tuple_child = g_variant_get_child_value(data, 1);
	403	mqflag = g_variant_get_uint64(tuple_child);
	404	g_variant_unref(tuple_child);
	405	return scpi_dmm_set_mq(sdi, mq, mqflag);
7a396ff5	406	default:
3cdad416	407	return SR_ERR_NA;
7a396ff5	408	}
7a396ff5 GS	409	}
	410
	411	static int config_list(uint32_t key, GVariant **data,
	412	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	413	{
3cdad416 GS	414	struct dev_context *devc;
	415	GVariant gvar, arr[2];
	416	GVariantBuilder gvb;
	417	size_t i;
7a396ff5	418
7a396ff5 GS	419	(void)cg;
7a396ff5 GS	420
3cdad416 GS	421	devc = sdi ? sdi->priv : NULL;
3cdad416 GS	422
7a396ff5	423	switch (key) {
3cdad416 GS	424	case SR_CONF_SCAN_OPTIONS:
3cdad416 GS	425	case SR_CONF_DEVICE_OPTIONS:
1d2f9963 GS	426	if (!devc)
	427	return STD_CONFIG_LIST(key, data, sdi, cg,
	428	scanopts, drvopts, devopts_generic);
	429	return std_opts_config_list(key, data, sdi, cg,
	430	ARRAY_AND_SIZE(scanopts), ARRAY_AND_SIZE(drvopts),
	431	devc->model->devopts, devc->model->devopts_size);
3cdad416 GS	432	case SR_CONF_MEASURED_QUANTITY:
	433	/* TODO Use std_gvar_measured_quantities() when available. */
	434	if (!devc)
	435	return SR_ERR_ARG;
	436	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	437	for (i = 0; i < devc->model->mqopt_size; i++) {
	438	arr[0] = g_variant_new_uint32(devc->model->mqopts[i].mq);
	439	arr[1] = g_variant_new_uint64(devc->model->mqopts[i].mqflag);
	440	gvar = g_variant_new_tuple(arr, ARRAY_SIZE(arr));
	441	g_variant_builder_add_value(&gvb, gvar);
	442	}
	443	*data = g_variant_builder_end(&gvb);
	444	return SR_OK;
7a396ff5	445	default:
3cdad416	446	(void)devc;
7a396ff5 GS	447	return SR_ERR_NA;
7a396ff5 GS	448	}
7a396ff5 GS	449	}
	450
	451	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	452	{
3cdad416 GS	453	struct sr_scpi_dev_inst *scpi;
	454	struct dev_context *devc;
	455	int ret;
08f3b427	456	const struct mqopt_item *item;
3cdad416	457	const char *command;
d0b602f0	458	char *response;
3cdad416 GS	459
	460	scpi = sdi->conn;
	461	devc = sdi->priv;
	462
	463	ret = scpi_dmm_get_mq(sdi, &devc->start_acq_mq.curr_mq,
08f3b427	464	&devc->start_acq_mq.curr_mqflag, NULL, &item);
3cdad416 GS	465	if (ret != SR_OK)
	466	return ret;
	467
d0b602f0 TK	468	/*
	469	* Query for current precision if DMM supports the command
	470	*/
	471	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_QUERY_PREC);
	472	if (command && *command) {
	473	scpi_dmm_cmd_delay(scpi);
	474	ret = sr_scpi_get_string(scpi, command, &response);
	475	if (ret == SR_OK) {
	476	g_strstrip(response);
33aa8117 GS	477	g_free(devc->precision);
33aa8117 GS	478	devc->precision = g_strdup(response);
d0b602f0 TK	479	g_free(response);
	480	sr_dbg("%s: Precision: '%s'", __func__, devc->precision);
	481	} else {
33aa8117 GS	482	sr_info("Precision query ('%s') failed: %d",
33aa8117 GS	483	command, ret);
d0b602f0 TK	484	}
	485	}
	486
3cdad416 GS	487	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_START_ACQ);
3cdad416 GS	488	if (command && *command) {
3cdad416	489	scpi_dmm_cmd_delay(scpi);
28877994	490	ret = sr_scpi_send(scpi, command);
3cdad416 GS	491	if (ret != SR_OK)
	492	return ret;
	493	}
7a396ff5	494
3cdad416 GS	495	sr_sw_limits_acquisition_start(&devc->limits);
	496	ret = std_session_send_df_header(sdi);
	497	if (ret != SR_OK)
	498	return ret;
	499
	500	ret = sr_scpi_source_add(sdi->session, scpi, G_IO_IN, 10,
	501	scpi_dmm_receive_data, (void *)sdi);
	502	if (ret != SR_OK)
	503	return ret;
7a396ff5 GS	504
	505	return SR_OK;
	506	}
	507
	508	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	509	{
3cdad416 GS	510	struct sr_scpi_dev_inst *scpi;
	511	struct dev_context *devc;
	512	const char *command;
	513
	514	scpi = sdi->conn;
	515	devc = sdi->priv;
7a396ff5	516
3cdad416 GS	517	command = sr_scpi_cmd_get(devc->cmdset, DMM_CMD_STOP_ACQ);
3cdad416 GS	518	if (command && *command) {
3cdad416	519	scpi_dmm_cmd_delay(scpi);
28877994	520	(void)sr_scpi_send(scpi, command);
3cdad416 GS	521	}
	522	sr_scpi_source_remove(sdi->session, scpi);
	523
	524	std_session_send_df_end(sdi);
7a396ff5	525
33aa8117 GS	526	g_free(devc->precision);
33aa8117 GS	527	devc->precision = NULL;
d0b602f0	528
7a396ff5 GS	529	return SR_OK;
	530	}
	531
0617bb5a	532	static struct sr_dev_driver scpi_dmm_driver_info = {
7a396ff5 GS	533	.name = "scpi-dmm",
	534	.longname = "SCPI DMM",
	535	.api_version = 1,
	536	.init = std_init,
	537	.cleanup = std_cleanup,
	538	.scan = scan,
	539	.dev_list = std_dev_list,
	540	.dev_clear = std_dev_clear,
	541	.config_get = config_get,
	542	.config_set = config_set,
	543	.config_list = config_list,
	544	.dev_open = dev_open,
	545	.dev_close = dev_close,
	546	.dev_acquisition_start = dev_acquisition_start,
	547	.dev_acquisition_stop = dev_acquisition_stop,
	548	.context = NULL,
	549	};
7a396ff5	550	SR_REGISTER_DEV_DRIVER(scpi_dmm_driver_info);