[libsigrok.git] / src / hardware / korad-kaxxxxp / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Hannu Vuolasaho <vuokkosetae@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include "protocol.h"

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

static const uint32_t drvopts[] = {
	/* Device class */
	SR_CONF_POWER_SUPPLY,
};

static const uint32_t devopts[] = {
	/* Device class */
	/* Acquisition modes. */
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	/* Device configuration */
	SR_CONF_VOLTAGE | SR_CONF_GET,
	SR_CONF_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_CURRENT | SR_CONF_GET,
	SR_CONF_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_ENABLED | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_REGULATION | SR_CONF_GET,
	SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED | SR_CONF_GET | SR_CONF_SET,
};

static const struct korad_kaxxxxp_model models[] = {
	/* Device enum, vendor, model, ID reply, channels, voltage, current */
	{VELLEMAN_PS3005D, "Velleman", "PS3005D",
		"VELLEMANPS3005DV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	{VELLEMAN_LABPS3005D, "Velleman", "LABPS3005D",
		"VELLEMANLABPS3005DV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	{KORAD_KA3005P, "Korad", "KA3005P",
		"KORADKA3005PV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	/* Sometimes the KA3005P has an extra 0x01 after the ID. */
	{KORAD_KA3005P_0X01, "Korad", "KA3005P",
		"KORADKA3005PV2.0\x01", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	ALL_ZERO
};

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct dev_context *devc;
	GSList *l;
	struct sr_dev_inst *sdi;
	struct sr_config *src;
	const char *conn, *serialcomm;
	struct sr_serial_dev_inst *serial;
	char reply[50];
	int i, model_id;
	unsigned int len;

	conn = NULL;
	serialcomm = NULL;

	for (l = options; l; l = l->next) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_CONN:
			conn = g_variant_get_string(src->data, NULL);
			break;
		case SR_CONF_SERIALCOMM:
			serialcomm = g_variant_get_string(src->data, NULL);
			break;
		default:
			sr_err("Unknown option %d, skipping.", src->key);
			break;
		}
	}

	if (!conn)
		return NULL;
	if (!serialcomm)
		serialcomm = "9600/8n1";

	serial = sr_serial_dev_inst_new(conn, serialcomm);
	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
		return NULL;

	serial_flush(serial);

	/* Get the device model. */
	len = 0;
	for (i = 0; models[i].id; i++) {
		if (strlen(models[i].id) > len)
			len = strlen(models[i].id);
	}
	memset(&reply, 0, sizeof(reply));
	sr_dbg("Want max %d bytes.", len);
	if ((korad_kaxxxxp_send_cmd(serial, "*IDN?") < 0))
		return NULL;

	/* i is used here for debug purposes only. */
	if ((i = korad_kaxxxxp_read_chars(serial, len, reply)) < 0)
		return NULL;
	sr_dbg("Received: %d, %s", i, reply);
	model_id = -1;
	for (i = 0; models[i].id; i++) {
		if (!strcmp(models[i].id, reply))
			model_id = i;
	}
	if (model_id < 0) {
		sr_err("Unknown model ID '%s' detected, aborting.", reply);
		return NULL;
	}
	sr_dbg("Found: %s %s (idx %d, ID '%s').", models[model_id].vendor,
		models[model_id].name, model_id, models[model_id].id);

	/* Init device instance, etc. */
	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup(models[model_id].vendor);
	sdi->model = g_strdup(models[model_id].name);
	sdi->inst_type = SR_INST_SERIAL;
	sdi->conn = serial;

	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");

	devc = g_malloc0(sizeof(struct dev_context));
	sr_sw_limits_init(&devc->limits);
	devc->model = &models[model_id];
	devc->reply[5] = 0;
	devc->req_sent_at = 0;
	sdi->priv = devc;

	/* Get current status of device. */
	if (korad_kaxxxxp_get_all_values(serial, devc) < 0)
		goto exit_err;

	serial_close(serial);

	return std_scan_complete(di, g_slist_append(NULL, sdi));

exit_err:
	sr_dev_inst_free(sdi);
	g_free(devc);
	sr_dbg("Scan failed.");

	return 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;

	(void)cg;

	if (!sdi || !data)
		return SR_ERR_ARG;

	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_VOLTAGE:
		*data = g_variant_new_double(devc->voltage);
		break;
	case SR_CONF_VOLTAGE_TARGET:
		*data = g_variant_new_double(devc->voltage_max);
		break;
	case SR_CONF_CURRENT:
		*data = g_variant_new_double(devc->current);
		break;
	case SR_CONF_CURRENT_LIMIT:
		*data = g_variant_new_double(devc->current_max);
		break;
	case SR_CONF_ENABLED:
		*data = g_variant_new_boolean(devc->output_enabled);
		break;
	case SR_CONF_REGULATION:
		/* Dual channel not supported. */
		*data = g_variant_new_string((devc->cc_mode[0]) ? "CC" : "CV");
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
		*data = g_variant_new_boolean(devc->ocp_enabled);
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
		*data = g_variant_new_boolean(devc->ovp_enabled);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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;
	double dval;
	gboolean bval;

	(void)cg;

	devc = sdi->priv;

	switch (key) {
	case SR_CONF_LIMIT_MSEC:
	case SR_CONF_LIMIT_SAMPLES:
		return sr_sw_limits_config_set(&devc->limits, key, data);
	case SR_CONF_VOLTAGE_TARGET:
		dval = g_variant_get_double(data);
		if (dval < devc->model->voltage[0] || dval > devc->model->voltage[1])
			return SR_ERR_ARG;
		devc->voltage_max = dval;
		devc->target = KAXXXXP_VOLTAGE_MAX;
		if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
			return SR_ERR;
		break;
	case SR_CONF_CURRENT_LIMIT:
		dval = g_variant_get_double(data);
		if (dval < devc->model->current[0] || dval > devc->model->current[1])
			return SR_ERR_ARG;
		devc->current_max = dval;
		devc->target = KAXXXXP_CURRENT_MAX;
		if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
			return SR_ERR;
		break;
	case SR_CONF_ENABLED:
		bval = g_variant_get_boolean(data);
		/* Set always so it is possible turn off with sigrok-cli. */
		devc->output_enabled = bval;
		devc->target = KAXXXXP_OUTPUT;
		if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
			return SR_ERR;
		break;
	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
		bval = g_variant_get_boolean(data);
		devc->ocp_enabled = bval;
		devc->target = KAXXXXP_OCP;
		if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
			return SR_ERR;
		break;
	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
		bval = g_variant_get_boolean(data);
		devc->ovp_enabled = bval;
		devc->target = KAXXXXP_OVP;
		if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
			return SR_ERR;
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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;
	GVariantBuilder gvb;
	double dval;
	int idx;

	devc = (sdi) ? sdi->priv : NULL;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	case SR_CONF_VOLTAGE_TARGET:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		/* Min, max, step. */
		for (idx = 0; idx < 3; idx++) {
			dval = devc->model->voltage[idx];
			gvar = g_variant_new_double(dval);
			g_variant_builder_add_value(&gvb, gvar);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_CURRENT_LIMIT:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		/* Min, max, step. */
		for (idx = 0; idx < 3; idx++) {
			dval = devc->model->current[idx];
			gvar = g_variant_new_double(dval);
			g_variant_builder_add_value(&gvb, gvar);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_serial_dev_inst *serial;

	devc = sdi->priv;

	sr_sw_limits_acquisition_start(&devc->limits);
	std_session_send_df_header(sdi);

	devc->reply_pending = FALSE;
	devc->req_sent_at = 0;
	serial = sdi->conn;
	serial_source_add(sdi->session, serial, G_IO_IN,
			KAXXXXP_POLL_INTERVAL_MS,
			korad_kaxxxxp_receive_data, (void *)sdi);

	return SR_OK;
}

static struct sr_dev_driver korad_kaxxxxp_driver_info = {
	.name = "korad-kaxxxxp",
	.longname = "Korad KAxxxxP",
	.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 = std_serial_dev_open,
	.dev_close = std_serial_dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = std_serial_dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(korad_kaxxxxp_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2015 Hannu Vuolasaho <vuokkosetae@gmail.com>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <config.h>
	21	#include "protocol.h"
	22
	23	static const uint32_t scanopts[] = {
	24	SR_CONF_CONN,
	25	SR_CONF_SERIALCOMM,
	26	};
	27
	28	static const uint32_t drvopts[] = {
	29	/* Device class */
	30	SR_CONF_POWER_SUPPLY,
	31	};
	32
	33	static const uint32_t devopts[] = {
	34	/* Device class */
	35	/* Acquisition modes. */
	36	SR_CONF_CONTINUOUS,
	37	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	38	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
	39	/* Device configuration */
	40	SR_CONF_VOLTAGE \| SR_CONF_GET,
	41	SR_CONF_VOLTAGE_TARGET \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	42	SR_CONF_CURRENT \| SR_CONF_GET,
	43	SR_CONF_CURRENT_LIMIT \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	44	SR_CONF_ENABLED \| SR_CONF_GET \| SR_CONF_SET,
	45	SR_CONF_REGULATION \| SR_CONF_GET,
	46	SR_CONF_OVER_CURRENT_PROTECTION_ENABLED \| SR_CONF_GET \| SR_CONF_SET,
	47	SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED \| SR_CONF_GET \| SR_CONF_SET,
	48	};
	49
	50	static const struct korad_kaxxxxp_model models[] = {
	51	/* Device enum, vendor, model, ID reply, channels, voltage, current */
	52	{VELLEMAN_PS3005D, "Velleman", "PS3005D",
	53	"VELLEMANPS3005DV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	54	{VELLEMAN_LABPS3005D, "Velleman", "LABPS3005D",
	55	"VELLEMANLABPS3005DV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	56	{KORAD_KA3005P, "Korad", "KA3005P",
	57	"KORADKA3005PV2.0", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	58	/* Sometimes the KA3005P has an extra 0x01 after the ID. */
	59	{KORAD_KA3005P_0X01, "Korad", "KA3005P",
	60	"KORADKA3005PV2.0\x01", 1, {0, 31, 0.01}, {0, 5, 0.001}},
	61	ALL_ZERO
	62	};
	63
	64	static GSList scan(struct sr_dev_driver di, GSList *options)
	65	{
	66	struct dev_context *devc;
	67	GSList *l;
	68	struct sr_dev_inst *sdi;
	69	struct sr_config *src;
	70	const char conn, serialcomm;
	71	struct sr_serial_dev_inst *serial;
	72	char reply[50];
	73	int i, model_id;
	74	unsigned int len;
	75
	76	conn = NULL;
	77	serialcomm = NULL;
	78
	79	for (l = options; l; l = l->next) {
	80	src = l->data;
	81	switch (src->key) {
	82	case SR_CONF_CONN:
	83	conn = g_variant_get_string(src->data, NULL);
	84	break;
	85	case SR_CONF_SERIALCOMM:
	86	serialcomm = g_variant_get_string(src->data, NULL);
	87	break;
	88	default:
	89	sr_err("Unknown option %d, skipping.", src->key);
	90	break;
	91	}
	92	}
	93
	94	if (!conn)
	95	return NULL;
	96	if (!serialcomm)
	97	serialcomm = "9600/8n1";
	98
	99	serial = sr_serial_dev_inst_new(conn, serialcomm);
	100	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
	101	return NULL;
	102
	103	serial_flush(serial);
	104
	105	/* Get the device model. */
	106	len = 0;
	107	for (i = 0; models[i].id; i++) {
	108	if (strlen(models[i].id) > len)
	109	len = strlen(models[i].id);
	110	}
	111	memset(&reply, 0, sizeof(reply));
	112	sr_dbg("Want max %d bytes.", len);
	113	if ((korad_kaxxxxp_send_cmd(serial, "*IDN?") < 0))
	114	return NULL;
	115
	116	/* i is used here for debug purposes only. */
	117	if ((i = korad_kaxxxxp_read_chars(serial, len, reply)) < 0)
	118	return NULL;
	119	sr_dbg("Received: %d, %s", i, reply);
	120	model_id = -1;
	121	for (i = 0; models[i].id; i++) {
	122	if (!strcmp(models[i].id, reply))
	123	model_id = i;
	124	}
	125	if (model_id < 0) {
	126	sr_err("Unknown model ID '%s' detected, aborting.", reply);
	127	return NULL;
	128	}
	129	sr_dbg("Found: %s %s (idx %d, ID '%s').", models[model_id].vendor,
	130	models[model_id].name, model_id, models[model_id].id);
	131
	132	/* Init device instance, etc. */
	133	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	134	sdi->status = SR_ST_INACTIVE;
	135	sdi->vendor = g_strdup(models[model_id].vendor);
	136	sdi->model = g_strdup(models[model_id].name);
	137	sdi->inst_type = SR_INST_SERIAL;
	138	sdi->conn = serial;
	139
	140	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "CH1");
	141
	142	devc = g_malloc0(sizeof(struct dev_context));
	143	sr_sw_limits_init(&devc->limits);
	144	devc->model = &models[model_id];
	145	devc->reply[5] = 0;
	146	devc->req_sent_at = 0;
	147	sdi->priv = devc;
	148
	149	/* Get current status of device. */
	150	if (korad_kaxxxxp_get_all_values(serial, devc) < 0)
	151	goto exit_err;
	152
	153	serial_close(serial);
	154
	155	return std_scan_complete(di, g_slist_append(NULL, sdi));
	156
	157	exit_err:
	158	sr_dev_inst_free(sdi);
	159	g_free(devc);
	160	sr_dbg("Scan failed.");
	161
	162	return NULL;
	163	}
	164
	165	static int config_get(uint32_t key, GVariant **data,
	166	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	167	{
	168	struct dev_context *devc;
	169
	170	(void)cg;
	171
	172	if (!sdi \|\| !data)
	173	return SR_ERR_ARG;
	174
	175	devc = sdi->priv;
	176
	177	switch (key) {
	178	case SR_CONF_LIMIT_SAMPLES:
	179	case SR_CONF_LIMIT_MSEC:
	180	return sr_sw_limits_config_get(&devc->limits, key, data);
	181	case SR_CONF_VOLTAGE:
	182	*data = g_variant_new_double(devc->voltage);
	183	break;
	184	case SR_CONF_VOLTAGE_TARGET:
	185	*data = g_variant_new_double(devc->voltage_max);
	186	break;
	187	case SR_CONF_CURRENT:
	188	*data = g_variant_new_double(devc->current);
	189	break;
	190	case SR_CONF_CURRENT_LIMIT:
	191	*data = g_variant_new_double(devc->current_max);
	192	break;
	193	case SR_CONF_ENABLED:
	194	*data = g_variant_new_boolean(devc->output_enabled);
	195	break;
	196	case SR_CONF_REGULATION:
	197	/* Dual channel not supported. */
	198	*data = g_variant_new_string((devc->cc_mode[0]) ? "CC" : "CV");
	199	break;
	200	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	201	*data = g_variant_new_boolean(devc->ocp_enabled);
	202	break;
	203	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	204	*data = g_variant_new_boolean(devc->ovp_enabled);
	205	break;
	206	default:
	207	return SR_ERR_NA;
	208	}
	209
	210	return SR_OK;
	211	}
	212
	213	static int config_set(uint32_t key, GVariant *data,
	214	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	215	{
	216	struct dev_context *devc;
	217	double dval;
	218	gboolean bval;
	219
	220	(void)cg;
	221
	222	devc = sdi->priv;
	223
	224	switch (key) {
	225	case SR_CONF_LIMIT_MSEC:
	226	case SR_CONF_LIMIT_SAMPLES:
	227	return sr_sw_limits_config_set(&devc->limits, key, data);
	228	case SR_CONF_VOLTAGE_TARGET:
	229	dval = g_variant_get_double(data);
	230	if (dval < devc->model->voltage[0] \|\| dval > devc->model->voltage[1])
	231	return SR_ERR_ARG;
	232	devc->voltage_max = dval;
	233	devc->target = KAXXXXP_VOLTAGE_MAX;
	234	if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
	235	return SR_ERR;
	236	break;
	237	case SR_CONF_CURRENT_LIMIT:
	238	dval = g_variant_get_double(data);
	239	if (dval < devc->model->current[0] \|\| dval > devc->model->current[1])
	240	return SR_ERR_ARG;
	241	devc->current_max = dval;
	242	devc->target = KAXXXXP_CURRENT_MAX;
	243	if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
	244	return SR_ERR;
	245	break;
	246	case SR_CONF_ENABLED:
	247	bval = g_variant_get_boolean(data);
	248	/* Set always so it is possible turn off with sigrok-cli. */
	249	devc->output_enabled = bval;
	250	devc->target = KAXXXXP_OUTPUT;
	251	if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
	252	return SR_ERR;
	253	break;
	254	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	255	bval = g_variant_get_boolean(data);
	256	devc->ocp_enabled = bval;
	257	devc->target = KAXXXXP_OCP;
	258	if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
	259	return SR_ERR;
	260	break;
	261	case SR_CONF_OVER_VOLTAGE_PROTECTION_ENABLED:
	262	bval = g_variant_get_boolean(data);
	263	devc->ovp_enabled = bval;
	264	devc->target = KAXXXXP_OVP;
	265	if (korad_kaxxxxp_set_value(sdi->conn, devc) < 0)
	266	return SR_ERR;
	267	break;
	268	default:
	269	return SR_ERR_NA;
	270	}
	271
	272	return SR_OK;
	273	}
	274
	275	static int config_list(uint32_t key, GVariant **data,
	276	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	277	{
	278	struct dev_context *devc;
	279	GVariant *gvar;
	280	GVariantBuilder gvb;
	281	double dval;
	282	int idx;
	283
	284	devc = (sdi) ? sdi->priv : NULL;
	285
	286	switch (key) {
	287	case SR_CONF_SCAN_OPTIONS:
	288	case SR_CONF_DEVICE_OPTIONS:
	289	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	290	case SR_CONF_VOLTAGE_TARGET:
	291	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	292	/* Min, max, step. */
	293	for (idx = 0; idx < 3; idx++) {
	294	dval = devc->model->voltage[idx];
	295	gvar = g_variant_new_double(dval);
	296	g_variant_builder_add_value(&gvb, gvar);
	297	}
	298	*data = g_variant_builder_end(&gvb);
	299	break;
	300	case SR_CONF_CURRENT_LIMIT:
	301	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	302	/* Min, max, step. */
	303	for (idx = 0; idx < 3; idx++) {
	304	dval = devc->model->current[idx];
	305	gvar = g_variant_new_double(dval);
	306	g_variant_builder_add_value(&gvb, gvar);
	307	}
	308	*data = g_variant_builder_end(&gvb);
	309	break;
	310	default:
	311	return SR_ERR_NA;
	312	}
	313
	314	return SR_OK;
	315	}
	316
	317	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	318	{
	319	struct dev_context *devc;
	320	struct sr_serial_dev_inst *serial;
	321
	322	devc = sdi->priv;
	323
	324	sr_sw_limits_acquisition_start(&devc->limits);
	325	std_session_send_df_header(sdi);
	326
	327	devc->reply_pending = FALSE;
	328	devc->req_sent_at = 0;
	329	serial = sdi->conn;
	330	serial_source_add(sdi->session, serial, G_IO_IN,
	331	KAXXXXP_POLL_INTERVAL_MS,
	332	korad_kaxxxxp_receive_data, (void *)sdi);
	333
	334	return SR_OK;
	335	}
	336
	337	static struct sr_dev_driver korad_kaxxxxp_driver_info = {
	338	.name = "korad-kaxxxxp",
	339	.longname = "Korad KAxxxxP",
	340	.api_version = 1,
	341	.init = std_init,
	342	.cleanup = std_cleanup,
	343	.scan = scan,
	344	.dev_list = std_dev_list,
	345	.dev_clear = std_dev_clear,
	346	.config_get = config_get,
	347	.config_set = config_set,
	348	.config_list = config_list,
	349	.dev_open = std_serial_dev_open,
	350	.dev_close = std_serial_dev_close,
	351	.dev_acquisition_start = dev_acquisition_start,
	352	.dev_acquisition_stop = std_serial_dev_acquisition_stop,
	353	.context = NULL,
	354	};
	355	SR_REGISTER_DEV_DRIVER(korad_kaxxxxp_driver_info);