[libsigrok.git] / src / hardware / pce-322a / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2016 George Hopkins <george-hopkins@null.net>
 * Copyright (C) 2016 Matthieu Guillaumin <matthieu@guillaum.in>
 *
 * 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 <config.h>
#include "protocol.h"

#define SERIALCOMM "115200/8n1"

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

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

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS | SR_CONF_SET,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SPL_WEIGHT_FREQ | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_SPL_WEIGHT_TIME | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_SPL_MEASUREMENT_RANGE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_POWER_OFF | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_DATA_SOURCE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const char *weight_freq[] = {
	"A", "C",
};

static const char *weight_time[] = {
	"F", "S",
};

static const uint64_t meas_ranges[][2] = {
	{ 30, 130 },
	{ 30, 80 },
	{ 50, 100 },
	{ 80, 130 },
};

static const char *data_sources[] = {
	"Live", "Memory",
};

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct dev_context *devc;
	struct sr_config *src;
	struct sr_serial_dev_inst *serial;
	struct sr_dev_inst *sdi;
	GSList *l;
	const char *conn;

	conn = NULL;
	for (l = options; l; l = l->next) {
		src = l->data;
		if (src->key == SR_CONF_CONN)
			conn = g_variant_get_string(src->data, NULL);
	}
	if (!conn)
		return NULL;

	serial = sr_serial_dev_inst_new(conn, SERIALCOMM);

	if (serial_open(serial, SERIAL_RDONLY) != SR_OK)
		return NULL;

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup("PCE");
	sdi->model = g_strdup("PCE-322A");
	devc = g_malloc0(sizeof(struct dev_context));
	devc->cur_mqflags = SR_MQFLAG_SPL_TIME_WEIGHT_F | SR_MQFLAG_SPL_FREQ_WEIGHT_A;
	sdi->conn = sr_serial_dev_inst_new(conn, SERIALCOMM);
	sdi->inst_type = SR_INST_SERIAL;
	sdi->priv = devc;
	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL");

	serial_close(serial);

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

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;
	GVariant *range[2];
	uint64_t low, high;
	uint64_t tmp;
	int ret;

	(void)cg;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;
	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_SPL_WEIGHT_FREQ:
		tmp = pce_322a_weight_freq_get(sdi);
		if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_A)
			*data = g_variant_new_string("A");
		else if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_C)
			*data = g_variant_new_string("C");
		else
			return SR_ERR;
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		tmp = pce_322a_weight_time_get(sdi);
		if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_F)
			*data = g_variant_new_string("F");
		else if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_S)
			*data = g_variant_new_string("S");
		else
			return SR_ERR;
		break;
	case SR_CONF_SPL_MEASUREMENT_RANGE:
		if ((ret = pce_322a_meas_range_get(sdi, &low, &high)) == SR_OK) {
			range[0] = g_variant_new_uint64(low);
			range[1] = g_variant_new_uint64(high);
			*data = g_variant_new_tuple(range, 2);
		}
		break;
	case SR_CONF_POWER_OFF:
		*data = g_variant_new_boolean(FALSE);
		break;
	case SR_CONF_DATA_SOURCE:
		if (devc->cur_data_source == DATA_SOURCE_LIVE)
			*data = g_variant_new_string("Live");
		else
			*data = g_variant_new_string("Memory");
		break;
	default:
		return SR_ERR_NA;
	}

	return ret;
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
	const struct sr_channel_group *cg)
{
	struct dev_context *devc;
	uint64_t tmp_u64, low, high;
	unsigned int i;
	int ret;
	const char *tmp_str;

	(void)cg;

	devc = sdi->priv;

	ret = SR_OK;
	switch (key) {
	case SR_CONF_LIMIT_SAMPLES:
		tmp_u64 = g_variant_get_uint64(data);
		devc->limit_samples = tmp_u64;
		ret = SR_OK;
		break;
	case SR_CONF_SPL_WEIGHT_FREQ:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "A"))
			ret = pce_322a_weight_freq_set(sdi,
					SR_MQFLAG_SPL_FREQ_WEIGHT_A);
		else if (!strcmp(tmp_str, "C"))
			ret = pce_322a_weight_freq_set(sdi,
					SR_MQFLAG_SPL_FREQ_WEIGHT_C);
		else
			return SR_ERR_ARG;
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "F"))
			ret = pce_322a_weight_time_set(sdi,
					SR_MQFLAG_SPL_TIME_WEIGHT_F);
		else if (!strcmp(tmp_str, "S"))
			ret = pce_322a_weight_time_set(sdi,
					SR_MQFLAG_SPL_TIME_WEIGHT_S);
		else
			return SR_ERR_ARG;
		break;
	case SR_CONF_SPL_MEASUREMENT_RANGE:
		g_variant_get(data, "(tt)", &low, &high);
		ret = SR_ERR_ARG;
		for (i = 0; i < ARRAY_SIZE(meas_ranges); i++) {
			if (meas_ranges[i][0] == low && meas_ranges[i][1] == high) {
				ret = pce_322a_meas_range_set(sdi, low, high);
				break;
			}
		}
		break;
	case SR_CONF_POWER_OFF:
		if (g_variant_get_boolean(data))
			ret = pce_322a_power_off(sdi);
		break;
	case SR_CONF_DATA_SOURCE:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "Live"))
			devc->cur_data_source = DATA_SOURCE_LIVE;
		else if (!strcmp(tmp_str, "Memory"))
			devc->cur_data_source = DATA_SOURCE_MEMORY;
		else
			return SR_ERR;
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

static int config_list(uint32_t key, GVariant **data,
	const struct sr_dev_inst *sdi, const struct sr_channel_group *cg)
{
	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_SPL_WEIGHT_FREQ:
		*data = g_variant_new_strv(ARRAY_AND_SIZE(weight_freq));
		break;
	case SR_CONF_SPL_WEIGHT_TIME:
		*data = g_variant_new_strv(ARRAY_AND_SIZE(weight_time));
		break;
	case SR_CONF_SPL_MEASUREMENT_RANGE:
		*data = std_gvar_tuple_array(&meas_ranges, ARRAY_SIZE(meas_ranges));
		break;
	case SR_CONF_DATA_SOURCE:
		*data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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

	ret = std_serial_dev_open(sdi);
	if (ret != SR_OK)
		return ret;

	return pce_322a_connect(sdi);
}

static int dev_close(struct sr_dev_inst *sdi)
{
	/*
	 * Ensure device gets properly disconnected even when there was
	 * no acquisition.
	 */
	pce_322a_disconnect(sdi);

	return std_serial_dev_close(sdi);
}

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

	devc = sdi->priv;
	devc->buffer_len = 0;
	devc->memory_state = MEM_STATE_REQUEST_MEMORY_USAGE;

	std_session_send_df_header(sdi);

	serial = sdi->conn;
	serial_source_add(sdi->session, serial, G_IO_IN, 150,
			pce_322a_receive_data, (void *)sdi);

	return SR_OK;
}

static struct sr_dev_driver pce_322a_driver_info = {
	.name = "pce-322a",
	.longname = "PCE PCE-322A",
	.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 = std_serial_dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(pce_322a_driver_info);
Commit	Line	Data
5a2c71cc GH	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2016 George Hopkins <george-hopkins@null.net>
ae87e02f	5	* Copyright (C) 2016 Matthieu Guillaumin <matthieu@guillaum.in>
5a2c71cc GH	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
	21	#include <string.h>
	22	#include <config.h>
	23	#include "protocol.h"
	24
	25	#define SERIALCOMM "115200/8n1"
	26
	27	static const uint32_t scanopts[] = {
	28	SR_CONF_CONN,
	29	};
	30
	31	static const uint32_t drvopts[] = {
	32	SR_CONF_SOUNDLEVELMETER,
	33	};
	34
	35	static const uint32_t devopts[] = {
	36	SR_CONF_CONTINUOUS \| SR_CONF_SET,
	37	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	38	SR_CONF_SPL_WEIGHT_FREQ \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	39	SR_CONF_SPL_WEIGHT_TIME \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	40	SR_CONF_SPL_MEASUREMENT_RANGE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	41	SR_CONF_POWER_OFF \| SR_CONF_GET \| SR_CONF_SET,
ae87e02f	42	SR_CONF_DATA_SOURCE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
5a2c71cc GH	43	};
	44
	45	static const char *weight_freq[] = {
f8195cb2	46	"A", "C",
5a2c71cc GH	47	};
	48
	49	static const char *weight_time[] = {
f8195cb2	50	"F", "S",
5a2c71cc GH	51	};
	52
	53	static const uint64_t meas_ranges[][2] = {
	54	{ 30, 130 },
	55	{ 30, 80 },
	56	{ 50, 100 },
	57	{ 80, 130 },
	58	};
	59
ae87e02f	60	static const char *data_sources[] = {
f8195cb2	61	"Live", "Memory",
ae87e02f MG	62	};
ae87e02f MG	63
5a2c71cc GH	64	static GSList scan(struct sr_dev_driver di, GSList *options)
5a2c71cc GH	65	{
5a2c71cc GH	66	struct dev_context *devc;
	67	struct sr_config *src;
	68	struct sr_serial_dev_inst *serial;
	69	struct sr_dev_inst *sdi;
43376f33	70	GSList *l;
5a2c71cc GH	71	const char *conn;
	72
	73	conn = NULL;
	74	for (l = options; l; l = l->next) {
	75	src = l->data;
	76	if (src->key == SR_CONF_CONN)
	77	conn = g_variant_get_string(src->data, NULL);
	78	}
	79	if (!conn)
	80	return NULL;
	81
	82	serial = sr_serial_dev_inst_new(conn, SERIALCOMM);
	83
	84	if (serial_open(serial, SERIAL_RDONLY) != SR_OK)
	85	return NULL;
	86
5a2c71cc GH	87	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	88	sdi->status = SR_ST_INACTIVE;
	89	sdi->vendor = g_strdup("PCE");
	90	sdi->model = g_strdup("PCE-322A");
	91	devc = g_malloc0(sizeof(struct dev_context));
	92	devc->cur_mqflags = SR_MQFLAG_SPL_TIME_WEIGHT_F \| SR_MQFLAG_SPL_FREQ_WEIGHT_A;
	93	sdi->conn = sr_serial_dev_inst_new(conn, SERIALCOMM);
	94	sdi->inst_type = SR_INST_SERIAL;
	95	sdi->priv = devc;
5a2c71cc	96	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "SPL");
5a2c71cc GH	97
	98	serial_close(serial);
	99
43376f33	100	return std_scan_complete(di, g_slist_append(NULL, sdi));
5a2c71cc GH	101	}
5a2c71cc GH	102
5a2c71cc GH	103	static int config_get(uint32_t key, GVariant **data,
	104	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	105	{
	106	struct dev_context *devc;
	107	GVariant *range[2];
	108	uint64_t low, high;
	109	uint64_t tmp;
	110	int ret;
	111
	112	(void)cg;
	113
	114	if (!sdi)
	115	return SR_ERR_ARG;
	116
	117	devc = sdi->priv;
	118	ret = SR_OK;
	119	switch (key) {
	120	case SR_CONF_LIMIT_SAMPLES:
	121	*data = g_variant_new_uint64(devc->limit_samples);
	122	break;
	123	case SR_CONF_SPL_WEIGHT_FREQ:
	124	tmp = pce_322a_weight_freq_get(sdi);
	125	if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_A)
	126	*data = g_variant_new_string("A");
	127	else if (tmp == SR_MQFLAG_SPL_FREQ_WEIGHT_C)
	128	*data = g_variant_new_string("C");
	129	else
	130	return SR_ERR;
	131	break;
	132	case SR_CONF_SPL_WEIGHT_TIME:
	133	tmp = pce_322a_weight_time_get(sdi);
	134	if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_F)
	135	*data = g_variant_new_string("F");
	136	else if (tmp == SR_MQFLAG_SPL_TIME_WEIGHT_S)
	137	*data = g_variant_new_string("S");
	138	else
	139	return SR_ERR;
	140	break;
	141	case SR_CONF_SPL_MEASUREMENT_RANGE:
	142	if ((ret = pce_322a_meas_range_get(sdi, &low, &high)) == SR_OK) {
	143	range[0] = g_variant_new_uint64(low);
	144	range[1] = g_variant_new_uint64(high);
	145	*data = g_variant_new_tuple(range, 2);
	146	}
	147	break;
	148	case SR_CONF_POWER_OFF:
	149	*data = g_variant_new_boolean(FALSE);
	150	break;
ae87e02f MG	151	case SR_CONF_DATA_SOURCE:
	152	if (devc->cur_data_source == DATA_SOURCE_LIVE)
	153	*data = g_variant_new_string("Live");
	154	else
	155	*data = g_variant_new_string("Memory");
	156	break;
5a2c71cc GH	157	default:
	158	return SR_ERR_NA;
	159	}
	160
	161	return ret;
	162	}
	163
	164	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	165	const struct sr_channel_group *cg)
	166	{
	167	struct dev_context *devc;
	168	uint64_t tmp_u64, low, high;
	169	unsigned int i;
	170	int ret;
	171	const char *tmp_str;
	172
	173	(void)cg;
	174
5a2c71cc GH	175	devc = sdi->priv;
	176
	177	ret = SR_OK;
	178	switch (key) {
	179	case SR_CONF_LIMIT_SAMPLES:
	180	tmp_u64 = g_variant_get_uint64(data);
	181	devc->limit_samples = tmp_u64;
	182	ret = SR_OK;
	183	break;
	184	case SR_CONF_SPL_WEIGHT_FREQ:
	185	tmp_str = g_variant_get_string(data, NULL);
	186	if (!strcmp(tmp_str, "A"))
	187	ret = pce_322a_weight_freq_set(sdi,
	188	SR_MQFLAG_SPL_FREQ_WEIGHT_A);
	189	else if (!strcmp(tmp_str, "C"))
	190	ret = pce_322a_weight_freq_set(sdi,
	191	SR_MQFLAG_SPL_FREQ_WEIGHT_C);
	192	else
	193	return SR_ERR_ARG;
	194	break;
	195	case SR_CONF_SPL_WEIGHT_TIME:
	196	tmp_str = g_variant_get_string(data, NULL);
	197	if (!strcmp(tmp_str, "F"))
	198	ret = pce_322a_weight_time_set(sdi,
	199	SR_MQFLAG_SPL_TIME_WEIGHT_F);
	200	else if (!strcmp(tmp_str, "S"))
	201	ret = pce_322a_weight_time_set(sdi,
	202	SR_MQFLAG_SPL_TIME_WEIGHT_S);
	203	else
	204	return SR_ERR_ARG;
	205	break;
	206	case SR_CONF_SPL_MEASUREMENT_RANGE:
	207	g_variant_get(data, "(tt)", &low, &high);
	208	ret = SR_ERR_ARG;
	209	for (i = 0; i < ARRAY_SIZE(meas_ranges); i++) {
	210	if (meas_ranges[i][0] == low && meas_ranges[i][1] == high) {
	211	ret = pce_322a_meas_range_set(sdi, low, high);
	212	break;
	213	}
	214	}
	215	break;
	216	case SR_CONF_POWER_OFF:
	217	if (g_variant_get_boolean(data))
	218	ret = pce_322a_power_off(sdi);
	219	break;
ae87e02f MG	220	case SR_CONF_DATA_SOURCE:
	221	tmp_str = g_variant_get_string(data, NULL);
	222	if (!strcmp(tmp_str, "Live"))
	223	devc->cur_data_source = DATA_SOURCE_LIVE;
	224	else if (!strcmp(tmp_str, "Memory"))
	225	devc->cur_data_source = DATA_SOURCE_MEMORY;
	226	else
	227	return SR_ERR;
	228	break;
5a2c71cc GH	229	default:
	230	ret = SR_ERR_NA;
	231	}
	232
	233	return ret;
	234	}
	235
	236	static int config_list(uint32_t key, GVariant **data,
	237	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	238	{
e66d1892 UH	239	switch (key) {
	240	case SR_CONF_SCAN_OPTIONS:
	241	case SR_CONF_DEVICE_OPTIONS:
	242	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	243	case SR_CONF_SPL_WEIGHT_FREQ:
53012da6	244	*data = g_variant_new_strv(ARRAY_AND_SIZE(weight_freq));
e66d1892 UH	245	break;
e66d1892 UH	246	case SR_CONF_SPL_WEIGHT_TIME:
53012da6	247	*data = g_variant_new_strv(ARRAY_AND_SIZE(weight_time));
e66d1892 UH	248	break;
e66d1892 UH	249	case SR_CONF_SPL_MEASUREMENT_RANGE:
db944f16	250	*data = std_gvar_tuple_array(&meas_ranges, ARRAY_SIZE(meas_ranges));
e66d1892 UH	251	break;
e66d1892 UH	252	case SR_CONF_DATA_SOURCE:
53012da6	253	*data = g_variant_new_strv(ARRAY_AND_SIZE(data_sources));
e66d1892 UH	254	break;
	255	default:
	256	return SR_ERR_NA;
5a2c71cc GH	257	}
5a2c71cc GH	258
e66d1892	259	return SR_OK;
5a2c71cc GH	260	}
	261
	262	static int dev_open(struct sr_dev_inst *sdi)
	263	{
	264	int ret;
	265
	266	ret = std_serial_dev_open(sdi);
	267	if (ret != SR_OK)
	268	return ret;
	269
	270	return pce_322a_connect(sdi);
	271	}
	272
	273	static int dev_close(struct sr_dev_inst *sdi)
	274	{
	275	/*
	276	* Ensure device gets properly disconnected even when there was
	277	* no acquisition.
	278	*/
	279	pce_322a_disconnect(sdi);
	280
	281	return std_serial_dev_close(sdi);
	282	}
	283
	284	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	285	{
	286	struct dev_context *devc;
	287	struct sr_serial_dev_inst *serial;
	288
5a2c71cc GH	289	devc = sdi->priv;
5a2c71cc GH	290	devc->buffer_len = 0;
ae87e02f	291	devc->memory_state = MEM_STATE_REQUEST_MEMORY_USAGE;
5a2c71cc	292
bee2b016	293	std_session_send_df_header(sdi);
5a2c71cc	294
5a2c71cc GH	295	serial = sdi->conn;
	296	serial_source_add(sdi->session, serial, G_IO_IN, 150,
	297	pce_322a_receive_data, (void *)sdi);
	298
	299	return SR_OK;
	300	}
	301
5a2c71cc GH	302	static struct sr_dev_driver pce_322a_driver_info = {
	303	.name = "pce-322a",
	304	.longname = "PCE PCE-322A",
	305	.api_version = 1,
	306	.init = std_init,
	307	.cleanup = std_cleanup,
	308	.scan = scan,
	309	.dev_list = std_dev_list,
f778bf02	310	.dev_clear = std_dev_clear,
5a2c71cc GH	311	.config_get = config_get,
	312	.config_set = config_set,
	313	.config_list = config_list,
	314	.dev_open = dev_open,
	315	.dev_close = dev_close,
	316	.dev_acquisition_start = dev_acquisition_start,
4b1a9d5d	317	.dev_acquisition_stop = std_serial_dev_acquisition_stop,
5a2c71cc GH	318	.context = NULL,
	319	};
	320	SR_REGISTER_DEV_DRIVER(pce_322a_driver_info);