[libsigrok.git] / src / hardware / serial-lcr / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 Janne Huttunen <jahuttun@gmail.com>
 * Copyright (C) 2019 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 <config.h>
#include <glib.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#include <math.h>
#include "protocol.h"
#include <stdint.h>
#include <string.h>

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

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

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_FRAMES | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_SET,
	SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_LIST,
	SR_CONF_EQUIV_CIRCUIT_MODEL | SR_CONF_GET | SR_CONF_LIST,
};

static struct sr_dev_inst *scan_packet_check_devinst;

static void scan_packet_check_setup(struct sr_dev_inst *sdi)
{
	scan_packet_check_devinst = sdi;
}

static gboolean scan_packet_check_func(const uint8_t *buf)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	const struct lcr_info *lcr;
	struct lcr_parse_info *info;

	/* Get a reference to the LCR model that is getting checked. */
	sdi = scan_packet_check_devinst;
	if (!sdi)
		return FALSE;
	devc = sdi->priv;
	if (!devc)
		return FALSE;
	lcr = devc->lcr_info;
	if (!lcr)
		return FALSE;

	/* Synchronize to the stream of LCR packets. */
	if (!lcr->packet_valid(buf))
		return FALSE;

	/* Have LCR packets _processed_, gather current configuration. */
	info = &devc->parse_info;
	memset(info, 0, sizeof(*info));
	if (lcr->packet_parse(buf, NULL, NULL, info) == SR_OK) {
                devc->output_freq = info->output_freq;
                if (info->circuit_model)
                        devc->circuit_model = info->circuit_model;
        }

	return TRUE;
}

static int scan_lcr_port(const struct lcr_info *lcr,
	const char *conn, struct sr_serial_dev_inst *serial)
{
	size_t len;
	uint8_t buf[128];
	int ret;
	size_t dropped;

	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
		return SR_ERR_IO;
	sr_info("Probing serial port %s.", conn);

	/*
	 * See if we can detect a device of specified type.
	 *
	 * No supported device provides a means to "identify" yet. No
	 * supported device requires "packet request" yet. They all just
	 * send data periodically. So we check if the packets match the
	 * probed device's expected format.
	 */
	serial_flush(serial);
	if (lcr->packet_request) {
		ret = lcr->packet_request(serial);
		if (ret < 0) {
			sr_err("Failed to request packet: %d.", ret);
			goto scan_port_cleanup;
		}
	}
	len = sizeof(buf);
	ret = serial_stream_detect(serial, buf, &len,
		lcr->packet_size, lcr->packet_valid, 3000);
	if (ret != SR_OK)
		goto scan_port_cleanup;

	/*
	 * If the packets were found to match after more than two packets
	 * got dropped, something is wrong. This is worth warning about,
	 * but isn't fatal. The dropped bytes might be due to nonstandard
	 * cables that ship with some devices.
	 */
	dropped = len - lcr->packet_size;
	if (dropped > 2 * lcr->packet_size)
		sr_warn("Had to drop unexpected amounts of data.");

	/* Create a device instance for the found device. */
	sr_info("Found %s %s device on port %s.", lcr->vendor, lcr->model, conn);

scan_port_cleanup:
	/* Keep serial port open if probe succeeded. */
	if (ret != SR_OK)
		serial_close(serial);

	return ret;
}

static struct sr_dev_inst *create_lcr_sdi(struct lcr_info *lcr,
	struct sr_serial_dev_inst *serial)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	size_t ch_idx;
	const char **ch_fmts;
	const char *fmt;
	char ch_name[8];

	sdi = g_malloc0(sizeof(*sdi));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup(lcr->vendor);
	sdi->model = g_strdup(lcr->model);
	sdi->inst_type = SR_INST_SERIAL;
	sdi->conn = serial;
	devc = g_malloc0(sizeof(*devc));
	sdi->priv = devc;
	devc->lcr_info = lcr;
	sr_sw_limits_init(&devc->limits);
	ch_fmts = lcr->channel_formats;
	for (ch_idx = 0; ch_idx < lcr->channel_count; ch_idx++) {
		fmt = (ch_fmts && ch_fmts[ch_idx]) ? ch_fmts[ch_idx] : "P%zu";
		snprintf(ch_name, sizeof(ch_name), fmt, ch_idx + 1);
		sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, ch_name);
	}

	return sdi;
}

static int read_lcr_port(struct sr_dev_inst *sdi,
	const struct lcr_info *lcr, struct sr_serial_dev_inst *serial)
{
	size_t len;
	uint8_t buf[128];
	int ret;

	/*
	 * Receive a few more packets (and process them!) to have the
	 * current output frequency and circuit model parameter values
	 * detected. The above "stream detect" phase only synchronized
	 * to the packets by checking their validity, but it cannot
	 * provide details. This phase here runs a modified "checker"
	 * routine which also extracts details from LCR packets after
	 * the device got detected and parameter storage was prepared.
	 */
	sr_info("Retrieving current acquisition parameters.");
	len = sizeof(buf);
	scan_packet_check_setup(sdi);
	ret = serial_stream_detect(serial, buf, &len,
		lcr->packet_size, scan_packet_check_func, 1000);
	scan_packet_check_setup(NULL);

	return ret;
}

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct lcr_info *lcr;
	struct sr_config *src;
	GSList *l, *devices;
	const char *conn, *serialcomm;
	struct sr_serial_dev_inst *serial;
	int ret;
	struct sr_dev_inst *sdi;

	lcr = (struct lcr_info *)di;

	/* Get serial port name and communication parameters. */
	conn = NULL;
	serialcomm = lcr->comm;
	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;
		}
	}
	if (!conn)
		return NULL;

	devices = NULL;
	/* TODO Handle ambiguous conn= specs, see serial-dmm. */

	/* Open the serial port, check data packets. */
	serial = sr_serial_dev_inst_new(conn, serialcomm);
	ret = scan_lcr_port(lcr, conn, serial);
	if (ret != SR_OK) {
		/* Probe failed, release 'serial'. */
		sr_serial_dev_inst_free(serial);
	} else {
		/* Create and return device instance, keep 'serial' alive. */
		sdi = create_lcr_sdi(lcr, serial);
		devices = g_slist_append(devices, sdi);
		(void)read_lcr_port(sdi, lcr, serial);
		serial_close(serial);
	}

	return std_scan_complete(di, devices);
}

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 struct lcr_info *lcr;

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

	switch (key) {
	case SR_CONF_LIMIT_FRAMES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_get(&devc->limits, key, data);
	case SR_CONF_OUTPUT_FREQUENCY:
		*data = g_variant_new_double(devc->output_freq);
		return SR_OK;
	case SR_CONF_EQUIV_CIRCUIT_MODEL:
		if (!devc->circuit_model)
			return SR_ERR_NA;
		*data = g_variant_new_string(devc->circuit_model);
		return SR_OK;
	default:
		lcr = devc->lcr_info;
		if (!lcr)
			return SR_ERR_NA;
		if (!lcr->config_get)
			return SR_ERR_NA;
		return lcr->config_get(key, data, sdi, cg);
	}
	/* UNREACH */
}

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;
	const struct lcr_info *lcr;

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

	switch (key) {
	case SR_CONF_LIMIT_FRAMES:
	case SR_CONF_LIMIT_MSEC:
		return sr_sw_limits_config_set(&devc->limits, key, data);
	default:
		lcr = devc->lcr_info;
		if (!lcr)
			return SR_ERR_NA;
		if (!lcr->config_set)
			return SR_ERR_NA;
		return lcr->config_set(key, data, sdi, cg);
	}
	/* UNREACH */
}

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;
	const struct lcr_info *lcr;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
	case SR_CONF_DEVICE_OPTIONS:
		return STD_CONFIG_LIST(key, data, sdi, cg,
			scanopts, drvopts, devopts);
	default:
		break;
	}

	if (!sdi)
		return SR_ERR_ARG;
	devc = sdi->priv;
	switch (key) {
	default:
		lcr = devc->lcr_info;
		if (!lcr || !lcr->config_list)
			return SR_ERR_NA;
		return lcr->config_list(key, data, sdi, cg);
	}
	/* UNREACH */
}

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

	devc = sdi->priv;

	/*
	 * Clear values that were gathered during scan or in a previous
	 * acquisition, so that this acquisition's data feed immediately
	 * starts with meta packets before first measurement values, and
	 * also communicates subsequent parameter changes.
	 */
	devc->output_freq = 0;
	devc->circuit_model = NULL;

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

	serial = sdi->conn;
	serial_source_add(sdi->session, serial, G_IO_IN, 50,
		lcr_receive_data, (void *)sdi);

	return SR_OK;
}

#define LCR_ES51919(id, vendor, model) \
	&((struct lcr_info) { \
		{ \
			.name = id, \
			.longname = vendor " " model, \
			.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, \
		}, \
		vendor, model, ES51919_CHANNEL_COUNT, NULL, \
		ES51919_COMM_PARAM, ES51919_PACKET_SIZE, \
		0, NULL, \
		es51919_packet_valid, es51919_packet_parse, \
		NULL, NULL, es51919_config_list, \
	}).di

SR_REGISTER_DEV_DRIVER_LIST(lcr_es51919_drivers,
	LCR_ES51919("deree-de5000", "DER EE", "DE-5000"),
	LCR_ES51919("mastech-ms5308", "MASTECH", "MS5308"),
	LCR_ES51919("peaktech-2170", "PeakTech", "2170"),
	LCR_ES51919("uni-t-ut612", "UNI-T", "UT612"),
);
Commit	Line	Data
b5089195 JH	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 Janne Huttunen <jahuttun@gmail.com>
bf5c4d46	5	* Copyright (C) 2019 Gerhard Sittig <gerhard.sittig@gmx.net>
b5089195 JH	6	*
	7	* This program is free software: you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation, either version 3 of the License, or
	10	* (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
	17	* You should have received a copy of the GNU General Public License
	18	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	19	*/
	20
6ec6c43b	21	#include <config.h>
b5089195	22	#include <glib.h>
c1aae900	23	#include <libsigrok/libsigrok.h>
b5089195	24	#include "libsigrok-internal.h"
bf5c4d46 GS	25	#include <math.h>
	26	#include "protocol.h"
	27	#include <stdint.h>
	28	#include <string.h>
b5089195	29
bf5c4d46 GS	30	static const uint32_t scanopts[] = {
	31	SR_CONF_CONN,
	32	SR_CONF_SERIALCOMM,
	33	};
	34
	35	static const uint32_t drvopts[] = {
	36	SR_CONF_LCRMETER,
	37	};
beedfa06	38
bf5c4d46 GS	39	static const uint32_t devopts[] = {
	40	SR_CONF_CONTINUOUS,
	41	SR_CONF_LIMIT_FRAMES \| SR_CONF_SET,
	42	SR_CONF_LIMIT_MSEC \| SR_CONF_SET,
	43	SR_CONF_OUTPUT_FREQUENCY \| SR_CONF_GET \| SR_CONF_LIST,
	44	SR_CONF_EQUIV_CIRCUIT_MODEL \| SR_CONF_GET \| SR_CONF_LIST,
beedfa06	45	};
b5089195	46
bf5c4d46 GS	47	static struct sr_dev_inst *scan_packet_check_devinst;
	48
	49	static void scan_packet_check_setup(struct sr_dev_inst *sdi)
	50	{
	51	scan_packet_check_devinst = sdi;
	52	}
	53
	54	static gboolean scan_packet_check_func(const uint8_t *buf)
b5089195	55	{
bf5c4d46 GS	56	struct sr_dev_inst *sdi;
	57	struct dev_context *devc;
	58	const struct lcr_info *lcr;
	59	struct lcr_parse_info *info;
	60
	61	/* Get a reference to the LCR model that is getting checked. */
	62	sdi = scan_packet_check_devinst;
	63	if (!sdi)
	64	return FALSE;
	65	devc = sdi->priv;
	66	if (!devc)
	67	return FALSE;
	68	lcr = devc->lcr_info;
	69	if (!lcr)
	70	return FALSE;
	71
	72	/* Synchronize to the stream of LCR packets. */
	73	if (!lcr->packet_valid(buf))
	74	return FALSE;
	75
	76	/* Have LCR packets _processed_, gather current configuration. */
	77	info = &devc->parse_info;
	78	memset(info, 0, sizeof(*info));
	79	if (lcr->packet_parse(buf, NULL, NULL, info) == SR_OK) {
	80	devc->output_freq = info->output_freq;
	81	if (info->circuit_model)
	82	devc->circuit_model = info->circuit_model;
	83	}
	84
	85	return TRUE;
b5089195 JH	86	}
b5089195 JH	87
c4d2e6fa GS	88	static int scan_lcr_port(const struct lcr_info *lcr,
c4d2e6fa GS	89	const char conn, struct sr_serial_dev_inst serial)
b5089195	90	{
c4d2e6fa	91	size_t len;
bf5c4d46	92	uint8_t buf[128];
bf5c4d46	93	int ret;
c4d2e6fa	94	size_t dropped;
b5089195	95
bf5c4d46	96	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
c4d2e6fa	97	return SR_ERR_IO;
bf5c4d46 GS	98	sr_info("Probing serial port %s.", conn);
	99
	100	/*
	101	* See if we can detect a device of specified type.
	102	*
	103	* No supported device provides a means to "identify" yet. No
	104	* supported device requires "packet request" yet. They all just
	105	* send data periodically. So we check if the packets match the
	106	* probed device's expected format.
	107	*/
cb5cd153 GS	108	serial_flush(serial);
	109	if (lcr->packet_request) {
	110	ret = lcr->packet_request(serial);
	111	if (ret < 0) {
	112	sr_err("Failed to request packet: %d.", ret);
c4d2e6fa	113	goto scan_port_cleanup;
cb5cd153 GS	114	}
cb5cd153 GS	115	}
bf5c4d46 GS	116	len = sizeof(buf);
	117	ret = serial_stream_detect(serial, buf, &len,
	118	lcr->packet_size, lcr->packet_valid, 3000);
	119	if (ret != SR_OK)
c4d2e6fa	120	goto scan_port_cleanup;
bf5c4d46 GS	121
	122	/*
	123	* If the packets were found to match after more than two packets
	124	* got dropped, something is wrong. This is worth warning about,
	125	* but isn't fatal. The dropped bytes might be due to nonstandard
	126	* cables that ship with some devices.
	127	*/
	128	dropped = len - lcr->packet_size;
	129	if (dropped > 2 * lcr->packet_size)
	130	sr_warn("Had to drop unexpected amounts of data.");
	131
	132	/* Create a device instance for the found device. */
	133	sr_info("Found %s %s device on port %s.", lcr->vendor, lcr->model, conn);
c4d2e6fa GS	134
	135	scan_port_cleanup:
	136	/* Keep serial port open if probe succeeded. */
	137	if (ret != SR_OK)
	138	serial_close(serial);
	139
	140	return ret;
	141	}
	142
	143	static struct sr_dev_inst create_lcr_sdi(struct lcr_info lcr,
	144	struct sr_serial_dev_inst *serial)
	145	{
	146	struct sr_dev_inst *sdi;
	147	struct dev_context *devc;
	148	size_t ch_idx;
	149	const char **ch_fmts;
	150	const char *fmt;
	151	char ch_name[8];
	152
bf5c4d46 GS	153	sdi = g_malloc0(sizeof(*sdi));
	154	sdi->status = SR_ST_INACTIVE;
	155	sdi->vendor = g_strdup(lcr->vendor);
	156	sdi->model = g_strdup(lcr->model);
	157	sdi->inst_type = SR_INST_SERIAL;
	158	sdi->conn = serial;
	159	devc = g_malloc0(sizeof(*devc));
	160	sdi->priv = devc;
	161	devc->lcr_info = lcr;
	162	sr_sw_limits_init(&devc->limits);
3f5473dd	163	ch_fmts = lcr->channel_formats;
bf5c4d46	164	for (ch_idx = 0; ch_idx < lcr->channel_count; ch_idx++) {
3f5473dd GS	165	fmt = (ch_fmts && ch_fmts[ch_idx]) ? ch_fmts[ch_idx] : "P%zu";
3f5473dd GS	166	snprintf(ch_name, sizeof(ch_name), fmt, ch_idx + 1);
bf5c4d46 GS	167	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, ch_name);
bf5c4d46 GS	168	}
c4d2e6fa GS	169
	170	return sdi;
	171	}
	172
	173	static int read_lcr_port(struct sr_dev_inst *sdi,
	174	const struct lcr_info lcr, struct sr_serial_dev_inst serial)
	175	{
	176	size_t len;
	177	uint8_t buf[128];
	178	int ret;
bf5c4d46 GS	179
	180	/*
	181	* Receive a few more packets (and process them!) to have the
	182	* current output frequency and circuit model parameter values
	183	* detected. The above "stream detect" phase only synchronized
	184	* to the packets by checking their validity, but it cannot
	185	* provide details. This phase here runs a modified "checker"
	186	* routine which also extracts details from LCR packets after
	187	* the device got detected and parameter storage was prepared.
	188	*/
	189	sr_info("Retrieving current acquisition parameters.");
	190	len = sizeof(buf);
	191	scan_packet_check_setup(sdi);
	192	ret = serial_stream_detect(serial, buf, &len,
	193	lcr->packet_size, scan_packet_check_func, 1000);
	194	scan_packet_check_setup(NULL);
	195
c4d2e6fa GS	196	return ret;
	197	}
	198
	199	static GSList scan(struct sr_dev_driver di, GSList *options)
	200	{
	201	struct lcr_info *lcr;
	202	struct sr_config *src;
	203	GSList l, devices;
	204	const char conn, serialcomm;
	205	struct sr_serial_dev_inst *serial;
	206	int ret;
	207	struct sr_dev_inst *sdi;
	208
	209	lcr = (struct lcr_info *)di;
	210
	211	/* Get serial port name and communication parameters. */
	212	conn = NULL;
	213	serialcomm = lcr->comm;
	214	for (l = options; l; l = l->next) {
	215	src = l->data;
	216	switch (src->key) {
	217	case SR_CONF_CONN:
	218	conn = g_variant_get_string(src->data, NULL);
	219	break;
	220	case SR_CONF_SERIALCOMM:
	221	serialcomm = g_variant_get_string(src->data, NULL);
	222	break;
	223	}
	224	}
	225	if (!conn)
	226	return NULL;
	227
	228	devices = NULL;
	229	/* TODO Handle ambiguous conn= specs, see serial-dmm. */
	230
	231	/* Open the serial port, check data packets. */
	232	serial = sr_serial_dev_inst_new(conn, serialcomm);
	233	ret = scan_lcr_port(lcr, conn, serial);
	234	if (ret != SR_OK) {
	235	/* Probe failed, release 'serial'. */
	236	sr_serial_dev_inst_free(serial);
	237	} else {
	238	/* Create and return device instance, keep 'serial' alive. */
	239	sdi = create_lcr_sdi(lcr, serial);
	240	devices = g_slist_append(devices, sdi);
	241	(void)read_lcr_port(sdi, lcr, serial);
	242	serial_close(serial);
	243	}
bf5c4d46 GS	244
	245	return std_scan_complete(di, devices);
	246	}
	247
	248	static int config_get(uint32_t key, GVariant **data,
	249	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	250	{
	251	struct dev_context *devc;
	252	const struct lcr_info *lcr;
	253
	254	if (!sdi)
	255	return SR_ERR_ARG;
	256	devc = sdi->priv;
	257
	258	switch (key) {
	259	case SR_CONF_LIMIT_FRAMES:
	260	case SR_CONF_LIMIT_MSEC:
	261	return sr_sw_limits_config_get(&devc->limits, key, data);
	262	case SR_CONF_OUTPUT_FREQUENCY:
	263	*data = g_variant_new_double(devc->output_freq);
	264	return SR_OK;
	265	case SR_CONF_EQUIV_CIRCUIT_MODEL:
	266	if (!devc->circuit_model)
	267	return SR_ERR_NA;
	268	*data = g_variant_new_string(devc->circuit_model);
	269	return SR_OK;
	270	default:
	271	lcr = devc->lcr_info;
	272	if (!lcr)
	273	return SR_ERR_NA;
	274	if (!lcr->config_get)
	275	return SR_ERR_NA;
	276	return lcr->config_get(key, data, sdi, cg);
	277	}
	278	/* UNREACH */
	279	}
	280
	281	static int config_set(uint32_t key, GVariant *data,
	282	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	283	{
	284	struct dev_context *devc;
	285	const struct lcr_info *lcr;
	286
	287	if (!sdi)
	288	return SR_ERR_ARG;
	289	devc = sdi->priv;
	290
	291	switch (key) {
	292	case SR_CONF_LIMIT_FRAMES:
	293	case SR_CONF_LIMIT_MSEC:
	294	return sr_sw_limits_config_set(&devc->limits, key, data);
	295	default:
	296	lcr = devc->lcr_info;
	297	if (!lcr)
	298	return SR_ERR_NA;
	299	if (!lcr->config_set)
	300	return SR_ERR_NA;
	301	return lcr->config_set(key, data, sdi, cg);
	302	}
	303	/* UNREACH */
	304	}
	305
	306	static int config_list(uint32_t key, GVariant **data,
	307	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
308	{
309	struct dev_context *devc;
310	const struct lcr_info *lcr;
311
312	switch (key) {
313	case SR_CONF_SCAN_OPTIONS:
314	case SR_CONF_DEVICE_OPTIONS:
315	return STD_CONFIG_LIST(key, data, sdi, cg,
316	scanopts, drvopts, devopts);
317	default:
318	break;
319	}
320
321	if (!sdi)
322	return SR_ERR_ARG;
323	devc = sdi->priv;
324	switch (key) {
325	default:
326	lcr = devc->lcr_info;
327	if (!lcr \|\| !lcr->config_list)
328	return SR_ERR_NA;
329	return lcr->config_list(key, data, sdi, cg);
330	}
331	/* UNREACH */
332	}
333
334	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
335	{
336	struct dev_context *devc;
337	struct sr_serial_dev_inst *serial;
338
339	devc = sdi->priv;
340
341	/*
342	* Clear values that were gathered during scan or in a previous
343	* acquisition, so that this acquisition's data feed immediately
344	* starts with meta packets before first measurement values, and
345	* also communicates subsequent parameter changes.
346	*/
347	devc->output_freq = 0;
348	devc->circuit_model = NULL;
349
350	sr_sw_limits_acquisition_start(&devc->limits);
351	std_session_send_df_header(sdi);
352
353	serial = sdi->conn;
354	serial_source_add(sdi->session, serial, G_IO_IN, 50,
355	lcr_receive_data, (void *)sdi);
356
357	return SR_OK;
b5089195 JH	358	}
b5089195 JH	359
beedfa06	360	#define LCR_ES51919(id, vendor, model) \
bf5c4d46	361	&((struct lcr_info) { \
beedfa06 GS	362	{ \
	363	.name = id, \
	364	.longname = vendor " " model, \
	365	.api_version = 1, \
	366	.init = std_init, \
	367	.cleanup = std_cleanup, \
	368	.scan = scan, \
	369	.dev_list = std_dev_list, \
bf5c4d46 GS	370	.dev_clear = std_dev_clear, \
	371	.config_get = config_get, \
	372	.config_set = config_set, \
	373	.config_list = config_list, \
beedfa06 GS	374	.dev_open = std_serial_dev_open, \
beedfa06 GS	375	.dev_close = std_serial_dev_close, \
bf5c4d46	376	.dev_acquisition_start = dev_acquisition_start, \
beedfa06 GS	377	.dev_acquisition_stop = std_serial_dev_acquisition_stop, \
	378	.context = NULL, \
	379	}, \
3f5473dd	380	vendor, model, ES51919_CHANNEL_COUNT, NULL, \
bf5c4d46	381	ES51919_COMM_PARAM, ES51919_PACKET_SIZE, \
cb5cd153	382	0, NULL, \
bf5c4d46 GS	383	es51919_packet_valid, es51919_packet_parse, \
bf5c4d46 GS	384	NULL, NULL, es51919_config_list, \
beedfa06 GS	385	}).di
	386
	387	SR_REGISTER_DEV_DRIVER_LIST(lcr_es51919_drivers,
	388	LCR_ES51919("deree-de5000", "DER EE", "DE-5000"),
ca9f8961	389	LCR_ES51919("mastech-ms5308", "MASTECH", "MS5308"),
6c62c605	390	LCR_ES51919("peaktech-2170", "PeakTech", "2170"),
6e407e98	391	LCR_ES51919("uni-t-ut612", "UNI-T", "UT612"),
beedfa06	392	);