[libsigrok.git] / src / hardware / atten-pps3xxx / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

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

/*
 * The default serial communication settings on the device are 9600
 * baud, 9 data bits. The 9th bit isn't actually used, and the vendor
 * software uses Mark parity to absorb the extra bit.
 *
 * Since 9 data bits is not a standard available in POSIX, we use two
 * stop bits to skip over the extra bit instead.
 */
#define SERIALCOMM "9600/8n2"

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

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

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS,
	SR_CONF_CHANNEL_CONFIG | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_OVER_CURRENT_PROTECTION_ENABLED | SR_CONF_GET | SR_CONF_SET,
};

static const uint32_t devopts_cg[] = {
	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,
};

static const char *channel_modes[] = {
	"Independent",
	"Series",
	"Parallel",
};

static const struct pps_model models[] = {
	{ PPS_3203T_3S, "PPS3203T-3S",
		CHANMODE_INDEPENDENT | CHANMODE_SERIES | CHANMODE_PARALLEL,
		3,
		{
			/* Channel 1 */
			{ { 0, 32, 0.01 }, { 0, 3, 0.001 } },
			/* Channel 2 */
			{ { 0, 32, 0.01 }, { 0, 3, 0.001 } },
			/* Channel 3 */
			{ { 0, 6, 0.01 }, { 0, 3, 0.001 } },
		},
	},
};

static GSList *scan(struct sr_dev_driver *di, GSList *options, int modelid)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_config *src;
	struct sr_channel *ch;
	struct sr_channel_group *cg;
	struct sr_serial_dev_inst *serial;
	GSList *l;
	const struct pps_model *model;
	uint8_t packet[PACKET_SIZE];
	unsigned int i;
	int delay_ms, ret;
	const char *conn, *serialcomm;
	char channel[10];

	conn = 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;
		}
	}
	if (!conn)
		return NULL;
	if (!serialcomm)
		serialcomm = SERIALCOMM;

	serial = sr_serial_dev_inst_new(conn, serialcomm);

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

	/* This is how the vendor software scans for hardware. */
	memset(packet, 0, PACKET_SIZE);
	packet[0] = 0xaa;
	packet[1] = 0xaa;
	delay_ms = serial_timeout(serial, PACKET_SIZE);
	if (serial_write_blocking(serial, packet, PACKET_SIZE, delay_ms) < PACKET_SIZE) {
		sr_err("Unable to write while probing for hardware.");
		return NULL;
	}
	/* The device responds with a 24-byte packet when it receives a packet.
	 * At 9600 baud, 300ms is long enough for it to have arrived. */
	g_usleep(300 * 1000);
	memset(packet, 0, PACKET_SIZE);
	if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) {
		sr_err("Unable to read while probing for hardware: %s",
				sr_strerror(ret));
		return NULL;
	}
	if (ret != PACKET_SIZE || packet[0] != 0xaa || packet[1] != 0xaa) {
		/* Doesn't look like an Atten PPS. */
		return NULL;
	}

	model = NULL;
	for (i = 0; i < ARRAY_SIZE(models); i++) {
		if (models[i].modelid == modelid) {
			model = &models[i];
			break;
		}
	}
	if (!model) {
		sr_err("Unknown modelid %d", modelid);
		return NULL;
	}

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup("Atten");
	sdi->model = g_strdup(model->name);
	sdi->inst_type = SR_INST_SERIAL;
	sdi->conn = serial;
	for (i = 0; i < MAX_CHANNELS; i++) {
		snprintf(channel, 10, "CH%d", i + 1);
		ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);
		cg = g_malloc(sizeof(struct sr_channel_group));
		cg->name = g_strdup(channel);
		cg->channels = g_slist_append(NULL, ch);
		cg->priv = NULL;
		sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	}

	devc = g_malloc0(sizeof(struct dev_context));
	devc->model = model;
	devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels);
	devc->delay_ms = delay_ms;
	sdi->priv = devc;

	serial_close(serial);

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

static GSList *scan_3203(struct sr_dev_driver *di, GSList *options)
{
	return scan(di, options, PPS_3203T_3S);
}

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;
	struct sr_channel *ch;
	int channel;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	if (!cg) {
		switch (key) {
		case SR_CONF_CHANNEL_CONFIG:
			*data = g_variant_new_string(channel_modes[devc->channel_mode]);
			break;
		case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
			*data = g_variant_new_boolean(devc->over_current_protection);
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* We only ever have one channel per channel group in this driver. */
		ch = cg->channels->data;
		channel = ch->index;

		switch (key) {
		case SR_CONF_VOLTAGE:
			*data = g_variant_new_double(devc->config[channel].output_voltage_last);
			break;
		case SR_CONF_VOLTAGE_TARGET:
			*data = g_variant_new_double(devc->config[channel].output_voltage_max);
			break;
		case SR_CONF_CURRENT:
			*data = g_variant_new_double(devc->config[channel].output_current_last);
			break;
		case SR_CONF_CURRENT_LIMIT:
			*data = g_variant_new_double(devc->config[channel].output_current_max);
			break;
		case SR_CONF_ENABLED:
			*data = g_variant_new_boolean(devc->config[channel].output_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;
	struct sr_channel *ch;
	gdouble dval;
	int channel, ival;
	gboolean bval;

	devc = sdi->priv;

	if (!cg) {
		switch (key) {
		case SR_CONF_CHANNEL_CONFIG:
			if ((ival = std_str_idx(data, ARRAY_AND_SIZE(channel_modes))) < 0)
				return SR_ERR_ARG;
			if (devc->model->channel_modes && (1 << ival) == 0)
				return SR_ERR_ARG; /* Not supported on this model. */
			if (ival == devc->channel_mode_set)
				break; /* Nothing to do. */
			devc->channel_mode_set = ival;
			devc->config_dirty = TRUE;
			break;
		case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
			bval = g_variant_get_boolean(data);
			if (bval == devc->over_current_protection_set)
				break; /* Nothing to do. */
			devc->over_current_protection_set = bval;
			devc->config_dirty = TRUE;
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* We only ever have one channel per channel group in this driver. */
		ch = cg->channels->data;
		channel = ch->index;

		switch (key) {
		case SR_CONF_VOLTAGE_TARGET:
			dval = g_variant_get_double(data);
			if (dval < 0 || dval > devc->model->channels[channel].voltage[1])
				return SR_ERR_ARG;
			devc->config[channel].output_voltage_max = dval;
			devc->config_dirty = TRUE;
			break;
		case SR_CONF_CURRENT_LIMIT:
			dval = g_variant_get_double(data);
			if (dval < 0 || dval > devc->model->channels[channel].current[1])
				return SR_ERR_ARG;
			devc->config[channel].output_current_max = dval;
			devc->config_dirty = TRUE;
			break;
		case SR_CONF_ENABLED:
			bval = g_variant_get_boolean(data);
			if (bval == devc->config[channel].output_enabled_set)
				break; /* Nothing to do. */
			devc->config[channel].output_enabled_set = bval;
			devc->config_dirty = TRUE;
			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;
	struct sr_channel *ch;
	int channel;

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

	if (!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_CHANNEL_CONFIG:
			if (!devc || !devc->model)
				return SR_ERR_ARG;
			if (devc->model->channel_modes == CHANMODE_INDEPENDENT) {
				/* The 1-channel models. */
				*data = g_variant_new_strv(channel_modes, 1);
			} else {
				/* The other models support all modes. */
				*data = g_variant_new_strv(ARRAY_AND_SIZE(channel_modes));
			}
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* We only ever have one channel per channel group in this driver. */
		ch = cg->channels->data;
		channel = ch->index;

		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
			break;
		case SR_CONF_VOLTAGE_TARGET:
			if (!devc || !devc->model)
				return SR_ERR_ARG;
			*data = std_gvar_min_max_step_array(devc->model->channels[channel].voltage);
			break;
		case SR_CONF_CURRENT_LIMIT:
			if (!devc || !devc->model)
				return SR_ERR_ARG;
			*data = std_gvar_min_max_step_array(devc->model->channels[channel].current);
			break;
		default:
			return SR_ERR_NA;
		}
	}

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;

	if (devc->config_dirty)
		/* Some configuration changes were queued up but didn't
		 * get sent to the device, likely because we were never
		 * in acquisition mode. Send them out now. */
		send_config(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;
	uint8_t packet[PACKET_SIZE];

	devc = sdi->priv;
	memset(devc->packet, 0x44, PACKET_SIZE);
	devc->packet_size = 0;

	devc->acquisition_running = TRUE;

	serial = sdi->conn;
	serial_source_add(sdi->session, serial, G_IO_IN, 50,
			atten_pps3xxx_receive_data, (void *)sdi);
	std_session_send_df_header(sdi);

	/* Send a "channel" configuration packet now. */
	memset(packet, 0, PACKET_SIZE);
	packet[0] = 0xaa;
	packet[1] = 0xaa;
	send_packet(sdi, packet);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	struct dev_context *devc;

	devc = sdi->priv;
	devc->acquisition_running = FALSE;

	return SR_OK;
}

static struct sr_dev_driver atten_pps3203_driver_info = {
	.name = "atten-pps3203",
	.longname = "Atten PPS3203T-3S",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan_3203,
	.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 = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(atten_pps3203_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2014 Bert Vermeulen <bert@biot.com>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <config.h>
	21	#include <string.h>
	22	#include "protocol.h"
	23
	24	/*
	25	* The default serial communication settings on the device are 9600
	26	* baud, 9 data bits. The 9th bit isn't actually used, and the vendor
	27	* software uses Mark parity to absorb the extra bit.
	28	*
	29	* Since 9 data bits is not a standard available in POSIX, we use two
	30	* stop bits to skip over the extra bit instead.
	31	*/
	32	#define SERIALCOMM "9600/8n2"
	33
	34	static const uint32_t scanopts[] = {
	35	SR_CONF_CONN,
	36	SR_CONF_SERIALCOMM,
	37	};
	38
	39	static const uint32_t drvopts[] = {
	40	SR_CONF_POWER_SUPPLY,
	41	};
	42
	43	static const uint32_t devopts[] = {
	44	SR_CONF_CONTINUOUS,
	45	SR_CONF_CHANNEL_CONFIG \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	46	SR_CONF_OVER_CURRENT_PROTECTION_ENABLED \| SR_CONF_GET \| SR_CONF_SET,
	47	};
	48
	49	static const uint32_t devopts_cg[] = {
	50	SR_CONF_VOLTAGE \| SR_CONF_GET,
	51	SR_CONF_VOLTAGE_TARGET \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	52	SR_CONF_CURRENT \| SR_CONF_GET,
	53	SR_CONF_CURRENT_LIMIT \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	54	SR_CONF_ENABLED \| SR_CONF_GET \| SR_CONF_SET,
	55	};
	56
	57	static const char *channel_modes[] = {
	58	"Independent",
	59	"Series",
	60	"Parallel",
	61	};
	62
	63	static const struct pps_model models[] = {
	64	{ PPS_3203T_3S, "PPS3203T-3S",
	65	CHANMODE_INDEPENDENT \| CHANMODE_SERIES \| CHANMODE_PARALLEL,
	66	3,
	67	{
	68	/* Channel 1 */
	69	{ { 0, 32, 0.01 }, { 0, 3, 0.001 } },
	70	/* Channel 2 */
	71	{ { 0, 32, 0.01 }, { 0, 3, 0.001 } },
	72	/* Channel 3 */
	73	{ { 0, 6, 0.01 }, { 0, 3, 0.001 } },
	74	},
	75	},
	76	};
	77
	78	static GSList scan(struct sr_dev_driver di, GSList *options, int modelid)
	79	{
	80	struct sr_dev_inst *sdi;
	81	struct dev_context *devc;
	82	struct sr_config *src;
	83	struct sr_channel *ch;
	84	struct sr_channel_group *cg;
	85	struct sr_serial_dev_inst *serial;
	86	GSList *l;
	87	const struct pps_model *model;
	88	uint8_t packet[PACKET_SIZE];
	89	unsigned int i;
	90	int delay_ms, ret;
	91	const char conn, serialcomm;
	92	char channel[10];
	93
	94	conn = serialcomm = NULL;
	95	for (l = options; l; l = l->next) {
	96	src = l->data;
	97	switch (src->key) {
	98	case SR_CONF_CONN:
	99	conn = g_variant_get_string(src->data, NULL);
	100	break;
	101	case SR_CONF_SERIALCOMM:
	102	serialcomm = g_variant_get_string(src->data, NULL);
	103	break;
	104	}
	105	}
	106	if (!conn)
	107	return NULL;
	108	if (!serialcomm)
	109	serialcomm = SERIALCOMM;
	110
	111	serial = sr_serial_dev_inst_new(conn, serialcomm);
	112
	113	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
	114	return NULL;
	115
	116	/* This is how the vendor software scans for hardware. */
	117	memset(packet, 0, PACKET_SIZE);
	118	packet[0] = 0xaa;
	119	packet[1] = 0xaa;
	120	delay_ms = serial_timeout(serial, PACKET_SIZE);
	121	if (serial_write_blocking(serial, packet, PACKET_SIZE, delay_ms) < PACKET_SIZE) {
	122	sr_err("Unable to write while probing for hardware.");
	123	return NULL;
	124	}
	125	/* The device responds with a 24-byte packet when it receives a packet.
	126	* At 9600 baud, 300ms is long enough for it to have arrived. */
	127	g_usleep(300 * 1000);
	128	memset(packet, 0, PACKET_SIZE);
	129	if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) {
	130	sr_err("Unable to read while probing for hardware: %s",
	131	sr_strerror(ret));
	132	return NULL;
	133	}
	134	if (ret != PACKET_SIZE \|\| packet[0] != 0xaa \|\| packet[1] != 0xaa) {
	135	/* Doesn't look like an Atten PPS. */
	136	return NULL;
	137	}
	138
	139	model = NULL;
	140	for (i = 0; i < ARRAY_SIZE(models); i++) {
	141	if (models[i].modelid == modelid) {
	142	model = &models[i];
	143	break;
	144	}
	145	}
	146	if (!model) {
	147	sr_err("Unknown modelid %d", modelid);
	148	return NULL;
	149	}
	150
	151	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	152	sdi->status = SR_ST_INACTIVE;
	153	sdi->vendor = g_strdup("Atten");
	154	sdi->model = g_strdup(model->name);
	155	sdi->inst_type = SR_INST_SERIAL;
	156	sdi->conn = serial;
	157	for (i = 0; i < MAX_CHANNELS; i++) {
	158	snprintf(channel, 10, "CH%d", i + 1);
	159	ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);
	160	cg = g_malloc(sizeof(struct sr_channel_group));
	161	cg->name = g_strdup(channel);
	162	cg->channels = g_slist_append(NULL, ch);
	163	cg->priv = NULL;
	164	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	165	}
	166
	167	devc = g_malloc0(sizeof(struct dev_context));
	168	devc->model = model;
	169	devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels);
	170	devc->delay_ms = delay_ms;
	171	sdi->priv = devc;
	172
	173	serial_close(serial);
	174
	175	return std_scan_complete(di, g_slist_append(NULL, sdi));
	176	}
	177
	178	static GSList scan_3203(struct sr_dev_driver di, GSList *options)
	179	{
	180	return scan(di, options, PPS_3203T_3S);
	181	}
	182
	183	static int config_get(uint32_t key, GVariant **data,
	184	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	185	{
	186	struct dev_context *devc;
	187	struct sr_channel *ch;
	188	int channel;
	189
	190	if (!sdi)
	191	return SR_ERR_ARG;
	192
	193	devc = sdi->priv;
	194
	195	if (!cg) {
	196	switch (key) {
	197	case SR_CONF_CHANNEL_CONFIG:
	198	*data = g_variant_new_string(channel_modes[devc->channel_mode]);
	199	break;
	200	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	201	*data = g_variant_new_boolean(devc->over_current_protection);
	202	break;
	203	default:
	204	return SR_ERR_NA;
	205	}
	206	} else {
	207	/* We only ever have one channel per channel group in this driver. */
	208	ch = cg->channels->data;
	209	channel = ch->index;
	210
	211	switch (key) {
	212	case SR_CONF_VOLTAGE:
	213	*data = g_variant_new_double(devc->config[channel].output_voltage_last);
	214	break;
	215	case SR_CONF_VOLTAGE_TARGET:
	216	*data = g_variant_new_double(devc->config[channel].output_voltage_max);
	217	break;
	218	case SR_CONF_CURRENT:
	219	*data = g_variant_new_double(devc->config[channel].output_current_last);
	220	break;
	221	case SR_CONF_CURRENT_LIMIT:
	222	*data = g_variant_new_double(devc->config[channel].output_current_max);
	223	break;
	224	case SR_CONF_ENABLED:
	225	*data = g_variant_new_boolean(devc->config[channel].output_enabled);
	226	break;
	227	default:
	228	return SR_ERR_NA;
	229	}
	230	}
	231
	232	return SR_OK;
	233	}
	234
	235	static int config_set(uint32_t key, GVariant *data,
	236	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	237	{
	238	struct dev_context *devc;
	239	struct sr_channel *ch;
	240	gdouble dval;
	241	int channel, ival;
	242	gboolean bval;
	243
	244	devc = sdi->priv;
	245
	246	if (!cg) {
	247	switch (key) {
	248	case SR_CONF_CHANNEL_CONFIG:
	249	if ((ival = std_str_idx(data, ARRAY_AND_SIZE(channel_modes))) < 0)
	250	return SR_ERR_ARG;
	251	if (devc->model->channel_modes && (1 << ival) == 0)
	252	return SR_ERR_ARG; /* Not supported on this model. */
	253	if (ival == devc->channel_mode_set)
	254	break; /* Nothing to do. */
	255	devc->channel_mode_set = ival;
	256	devc->config_dirty = TRUE;
	257	break;
	258	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	259	bval = g_variant_get_boolean(data);
	260	if (bval == devc->over_current_protection_set)
	261	break; /* Nothing to do. */
	262	devc->over_current_protection_set = bval;
	263	devc->config_dirty = TRUE;
	264	break;
	265	default:
	266	return SR_ERR_NA;
	267	}
	268	} else {
	269	/* We only ever have one channel per channel group in this driver. */
	270	ch = cg->channels->data;
	271	channel = ch->index;
	272
	273	switch (key) {
	274	case SR_CONF_VOLTAGE_TARGET:
	275	dval = g_variant_get_double(data);
	276	if (dval < 0 \|\| dval > devc->model->channels[channel].voltage[1])
	277	return SR_ERR_ARG;
	278	devc->config[channel].output_voltage_max = dval;
	279	devc->config_dirty = TRUE;
	280	break;
	281	case SR_CONF_CURRENT_LIMIT:
	282	dval = g_variant_get_double(data);
	283	if (dval < 0 \|\| dval > devc->model->channels[channel].current[1])
	284	return SR_ERR_ARG;
	285	devc->config[channel].output_current_max = dval;
	286	devc->config_dirty = TRUE;
	287	break;
	288	case SR_CONF_ENABLED:
	289	bval = g_variant_get_boolean(data);
	290	if (bval == devc->config[channel].output_enabled_set)
	291	break; /* Nothing to do. */
	292	devc->config[channel].output_enabled_set = bval;
	293	devc->config_dirty = TRUE;
	294	break;
	295	default:
	296	return SR_ERR_NA;
	297	}
	298	}
	299
	300	return SR_OK;
	301	}
	302
	303	static int config_list(uint32_t key, GVariant **data,
	304	const struct sr_dev_inst sdi, const struct sr_channel_group cg)
	305	{
	306	struct dev_context *devc;
	307	struct sr_channel *ch;
	308	int channel;
	309
	310	devc = (sdi) ? sdi->priv : NULL;
	311
	312	if (!cg) {
	313	switch (key) {
	314	case SR_CONF_SCAN_OPTIONS:
	315	case SR_CONF_DEVICE_OPTIONS:
	316	return STD_CONFIG_LIST(key, data, sdi, cg, scanopts, drvopts, devopts);
	317	case SR_CONF_CHANNEL_CONFIG:
	318	if (!devc \|\| !devc->model)
	319	return SR_ERR_ARG;
	320	if (devc->model->channel_modes == CHANMODE_INDEPENDENT) {
	321	/* The 1-channel models. */
	322	*data = g_variant_new_strv(channel_modes, 1);
	323	} else {
	324	/* The other models support all modes. */
	325	*data = g_variant_new_strv(ARRAY_AND_SIZE(channel_modes));
	326	}
	327	break;
	328	default:
	329	return SR_ERR_NA;
	330	}
	331	} else {
	332	/* We only ever have one channel per channel group in this driver. */
	333	ch = cg->channels->data;
	334	channel = ch->index;
	335
	336	switch (key) {
	337	case SR_CONF_DEVICE_OPTIONS:
	338	*data = std_gvar_array_u32(ARRAY_AND_SIZE(devopts_cg));
	339	break;
	340	case SR_CONF_VOLTAGE_TARGET:
	341	if (!devc \|\| !devc->model)
	342	return SR_ERR_ARG;
	343	*data = std_gvar_min_max_step_array(devc->model->channels[channel].voltage);
	344	break;
	345	case SR_CONF_CURRENT_LIMIT:
	346	if (!devc \|\| !devc->model)
	347	return SR_ERR_ARG;
	348	*data = std_gvar_min_max_step_array(devc->model->channels[channel].current);
	349	break;
	350	default:
	351	return SR_ERR_NA;
	352	}
	353	}
	354
	355	return SR_OK;
	356	}
	357
	358	static int dev_close(struct sr_dev_inst *sdi)
	359	{
	360	struct dev_context *devc;
	361
	362	devc = sdi->priv;
	363
	364	if (devc->config_dirty)
	365	/* Some configuration changes were queued up but didn't
	366	* get sent to the device, likely because we were never
	367	* in acquisition mode. Send them out now. */
	368	send_config(sdi);
	369
	370	return std_serial_dev_close(sdi);
	371	}
	372
	373	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	374	{
	375	struct dev_context *devc;
	376	struct sr_serial_dev_inst *serial;
	377	uint8_t packet[PACKET_SIZE];
	378
	379	devc = sdi->priv;
	380	memset(devc->packet, 0x44, PACKET_SIZE);
	381	devc->packet_size = 0;
	382
	383	devc->acquisition_running = TRUE;
	384
	385	serial = sdi->conn;
	386	serial_source_add(sdi->session, serial, G_IO_IN, 50,
	387	atten_pps3xxx_receive_data, (void *)sdi);
	388	std_session_send_df_header(sdi);
	389
	390	/* Send a "channel" configuration packet now. */
	391	memset(packet, 0, PACKET_SIZE);
	392	packet[0] = 0xaa;
	393	packet[1] = 0xaa;
	394	send_packet(sdi, packet);
	395
	396	return SR_OK;
	397	}
	398
	399	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	400	{
	401	struct dev_context *devc;
	402
	403	devc = sdi->priv;
	404	devc->acquisition_running = FALSE;
	405
	406	return SR_OK;
	407	}
	408
	409	static struct sr_dev_driver atten_pps3203_driver_info = {
	410	.name = "atten-pps3203",
	411	.longname = "Atten PPS3203T-3S",
	412	.api_version = 1,
	413	.init = std_init,
	414	.cleanup = std_cleanup,
	415	.scan = scan_3203,
	416	.dev_list = std_dev_list,
	417	.dev_clear = std_dev_clear,
	418	.config_get = config_get,
	419	.config_set = config_set,
	420	.config_list = config_list,
	421	.dev_open = std_serial_dev_open,
	422	.dev_close = dev_close,
	423	.dev_acquisition_start = dev_acquisition_start,
	424	.dev_acquisition_stop = dev_acquisition_stop,
	425	.context = NULL,
	426	};
	427	SR_REGISTER_DEV_DRIVER(atten_pps3203_driver_info);