[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_SET,
	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 } },
		},
	},
};

SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;

static int init(struct sr_dev_driver *di, struct sr_context *sr_ctx)
{
	return std_init(sr_ctx, di, LOG_PREFIX);
}

static GSList *scan(struct sr_dev_driver *di, GSList *options, int modelid)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	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, *devices;
	const struct pps_model *model;
	uint8_t packet[PACKET_SIZE];
	unsigned int i;
	int delay_ms, ret;
	const char *conn, *serialcomm;
	char channel[10];

	devices = NULL;
	drvc = di->context;
	drvc->instances = NULL;

	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;

	serial_flush(serial);

	/* 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->driver = di;
	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;
	drvc->instances = g_slist_append(drvc->instances, sdi);
	devices = g_slist_append(devices, sdi);

	serial_close(serial);
	if (!devices)
		sr_serial_dev_inst_free(serial);

	return devices;
}

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

static GSList *dev_list(const struct sr_dev_driver *di)
{
	return ((struct drv_context *)(di->context))->instances;
}

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, ret;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;

	ret = SR_OK;
	if (!cg) {
		/* No channel group: global options. */
		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 ret;
}

static int find_str(const char *str, const char **strings, int array_size)
{
	int idx, i;

	idx = -1;
	for (i = 0; i < array_size; i++) {
		if (!strcmp(str, strings[i])) {
			idx = i;
			break;
		}
	}

	return idx;
}

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, ret, ival;
	const char *sval;
	gboolean bval;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	ret = SR_OK;
	devc = sdi->priv;
	if (!cg) {
		/* No channel group: global options. */
		switch (key) {
		case SR_CONF_CHANNEL_CONFIG:
			sval = g_variant_get_string(data, NULL);
			if ((ival = find_str(sval, channel_modes,
							ARRAY_SIZE(channel_modes))) == -1) {
				ret = SR_ERR_ARG;
				break;
			}
			if (devc->model->channel_modes && (1 << ival) == 0) {
				/* Not supported on this model. */
				ret = SR_ERR_ARG;
			}
			if (ival == devc->channel_mode_set)
				/* Nothing to do. */
				break;
			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)
				/* Nothing to do. */
				break;
			devc->over_current_protection_set = bval;
			devc->config_dirty = TRUE;
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* Channel group specified: per-channel options. */
		/* 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])
				ret = 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])
				ret = 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)
				/* Nothing to do. */
				break;
			devc->config[channel].output_enabled_set = bval;
			devc->config_dirty = TRUE;
			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)
{
	struct dev_context *devc;
	struct sr_channel *ch;
	GVariant *gvar;
	GVariantBuilder gvb;
	int channel, ret, i;

	/* Always available. */
	if (key == SR_CONF_SCAN_OPTIONS) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		return SR_OK;
	}

	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
				drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
		return SR_OK;
	}

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;
	ret = SR_OK;
	if (!cg) {
		/* No channel group: global options. */
		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
			break;
		case SR_CONF_CHANNEL_CONFIG:
			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(channel_modes, ARRAY_SIZE(channel_modes));
			}
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		/* Channel group specified: per-channel options. */
		if (!sdi)
			return SR_ERR_ARG;
		/* 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 = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
					devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
			break;
		case SR_CONF_VOLTAGE_TARGET:
			g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
			/* Min, max, step. */
			for (i = 0; i < 3; i++) {
				gvar = g_variant_new_double(devc->model->channels[channel].voltage[i]);
				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 (i = 0; i < 3; i++) {
				gvar = g_variant_new_double(devc->model->channels[channel].current[i]);
				g_variant_builder_add_value(&gvb, gvar);
			}
			*data = g_variant_builder_end(&gvb);
			break;
		default:
			return SR_ERR_NA;
		}
	}

	return ret;
}

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];

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

	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, LOG_PREFIX);

	/* 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;

	if (sdi->status != SR_ST_ACTIVE)
		return SR_ERR_DEV_CLOSED;

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

	return SR_OK;
}

SR_PRIV struct sr_dev_driver atten_pps3203_driver_info = {
	.name = "atten-pps3203",
	.longname = "Atten PPS3203T-3S",
	.api_version = 1,
	.init = init,
	.cleanup = std_cleanup,
	.scan = scan_3203,
	.dev_list = dev_list,
	.dev_clear = NULL,
	.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,
};
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 \| SR_CONF_SET,
	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	SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
	79
	80	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	81	{
	82	return std_init(sr_ctx, di, LOG_PREFIX);
	83	}
	84
	85	static GSList scan(struct sr_dev_driver di, GSList *options, int modelid)
	86	{
	87	struct sr_dev_inst *sdi;
	88	struct drv_context *drvc;
	89	struct dev_context *devc;
	90	struct sr_config *src;
	91	struct sr_channel *ch;
	92	struct sr_channel_group *cg;
	93	struct sr_serial_dev_inst *serial;
	94	GSList l, devices;
	95	const struct pps_model *model;
	96	uint8_t packet[PACKET_SIZE];
	97	unsigned int i;
	98	int delay_ms, ret;
	99	const char conn, serialcomm;
	100	char channel[10];
	101
	102	devices = NULL;
	103	drvc = di->context;
	104	drvc->instances = NULL;
	105
	106	conn = serialcomm = NULL;
	107	for (l = options; l; l = l->next) {
	108	src = l->data;
	109	switch (src->key) {
	110	case SR_CONF_CONN:
	111	conn = g_variant_get_string(src->data, NULL);
	112	break;
	113	case SR_CONF_SERIALCOMM:
	114	serialcomm = g_variant_get_string(src->data, NULL);
	115	break;
	116	}
	117	}
	118	if (!conn)
	119	return NULL;
	120	if (!serialcomm)
	121	serialcomm = SERIALCOMM;
	122
	123	serial = sr_serial_dev_inst_new(conn, serialcomm);
	124
	125	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
	126	return NULL;
	127
	128	serial_flush(serial);
	129
	130	/* This is how the vendor software scans for hardware. */
	131	memset(packet, 0, PACKET_SIZE);
	132	packet[0] = 0xaa;
	133	packet[1] = 0xaa;
	134	delay_ms = serial_timeout(serial, PACKET_SIZE);
	135	if (serial_write_blocking(serial, packet, PACKET_SIZE, delay_ms) < PACKET_SIZE) {
	136	sr_err("Unable to write while probing for hardware.");
	137	return NULL;
	138	}
	139	/* The device responds with a 24-byte packet when it receives a packet.
	140	* At 9600 baud, 300ms is long enough for it to have arrived. */
	141	g_usleep(300 * 1000);
	142	memset(packet, 0, PACKET_SIZE);
	143	if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) {
	144	sr_err("Unable to read while probing for hardware: %s",
	145	sr_strerror(ret));
	146	return NULL;
	147	}
	148	if (ret != PACKET_SIZE \|\| packet[0] != 0xaa \|\| packet[1] != 0xaa) {
	149	/* Doesn't look like an Atten PPS. */
	150	return NULL;
	151	}
	152
	153	model = NULL;
	154	for (i = 0; i < ARRAY_SIZE(models); i++) {
	155	if (models[i].modelid == modelid) {
	156	model = &models[i];
	157	break;
	158	}
	159	}
	160	if (!model) {
	161	sr_err("Unknown modelid %d", modelid);
	162	return NULL;
	163	}
	164
	165	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	166	sdi->status = SR_ST_INACTIVE;
	167	sdi->vendor = g_strdup("Atten");
	168	sdi->model = g_strdup(model->name);
	169	sdi->driver = di;
	170	sdi->inst_type = SR_INST_SERIAL;
	171	sdi->conn = serial;
	172	for (i = 0; i < MAX_CHANNELS; i++) {
	173	snprintf(channel, 10, "CH%d", i + 1);
	174	ch = sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel);
	175	cg = g_malloc(sizeof(struct sr_channel_group));
	176	cg->name = g_strdup(channel);
	177	cg->channels = g_slist_append(NULL, ch);
	178	cg->priv = NULL;
	179	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	180	}
	181
	182	devc = g_malloc0(sizeof(struct dev_context));
	183	devc->model = model;
	184	devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels);
	185	devc->delay_ms = delay_ms;
	186	sdi->priv = devc;
	187	drvc->instances = g_slist_append(drvc->instances, sdi);
	188	devices = g_slist_append(devices, sdi);
	189
	190	serial_close(serial);
	191	if (!devices)
	192	sr_serial_dev_inst_free(serial);
	193
	194	return devices;
	195	}
	196
	197	static GSList scan_3203(struct sr_dev_driver di, GSList *options)
	198	{
	199	return scan(di, options, PPS_3203T_3S);
	200	}
	201
	202	static GSList dev_list(const struct sr_dev_driver di)
	203	{
	204	return ((struct drv_context *)(di->context))->instances;
	205	}
	206
	207	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	208	const struct sr_channel_group *cg)
	209	{
	210	struct dev_context *devc;
	211	struct sr_channel *ch;
	212	int channel, ret;
	213
	214	if (!sdi)
	215	return SR_ERR_ARG;
	216
	217	devc = sdi->priv;
	218
	219	ret = SR_OK;
	220	if (!cg) {
	221	/* No channel group: global options. */
	222	switch (key) {
	223	case SR_CONF_CHANNEL_CONFIG:
	224	*data = g_variant_new_string(channel_modes[devc->channel_mode]);
	225	break;
	226	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	227	*data = g_variant_new_boolean(devc->over_current_protection);
	228	break;
	229	default:
	230	return SR_ERR_NA;
	231	}
	232	} else {
	233	/* We only ever have one channel per channel group in this driver. */
	234	ch = cg->channels->data;
	235	channel = ch->index;
	236
	237	switch (key) {
	238	case SR_CONF_VOLTAGE:
	239	*data = g_variant_new_double(devc->config[channel].output_voltage_last);
	240	break;
	241	case SR_CONF_VOLTAGE_TARGET:
	242	*data = g_variant_new_double(devc->config[channel].output_voltage_max);
	243	break;
	244	case SR_CONF_CURRENT:
	245	*data = g_variant_new_double(devc->config[channel].output_current_last);
	246	break;
	247	case SR_CONF_CURRENT_LIMIT:
	248	*data = g_variant_new_double(devc->config[channel].output_current_max);
	249	break;
	250	case SR_CONF_ENABLED:
	251	*data = g_variant_new_boolean(devc->config[channel].output_enabled);
	252	break;
	253	default:
	254	return SR_ERR_NA;
	255	}
	256	}
	257
	258	return ret;
	259	}
	260
	261	static int find_str(const char str, const char *strings, int array_size)
	262	{
	263	int idx, i;
	264
	265	idx = -1;
	266	for (i = 0; i < array_size; i++) {
	267	if (!strcmp(str, strings[i])) {
	268	idx = i;
	269	break;
	270	}
	271	}
	272
	273	return idx;
	274	}
	275
	276	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	277	const struct sr_channel_group *cg)
	278	{
	279	struct dev_context *devc;
	280	struct sr_channel *ch;
	281	gdouble dval;
	282	int channel, ret, ival;
	283	const char *sval;
	284	gboolean bval;
	285
	286	if (sdi->status != SR_ST_ACTIVE)
	287	return SR_ERR_DEV_CLOSED;
	288
	289	ret = SR_OK;
	290	devc = sdi->priv;
	291	if (!cg) {
	292	/* No channel group: global options. */
	293	switch (key) {
	294	case SR_CONF_CHANNEL_CONFIG:
	295	sval = g_variant_get_string(data, NULL);
	296	if ((ival = find_str(sval, channel_modes,
	297	ARRAY_SIZE(channel_modes))) == -1) {
	298	ret = SR_ERR_ARG;
	299	break;
	300	}
	301	if (devc->model->channel_modes && (1 << ival) == 0) {
	302	/* Not supported on this model. */
	303	ret = SR_ERR_ARG;
	304	}
	305	if (ival == devc->channel_mode_set)
	306	/* Nothing to do. */
	307	break;
	308	devc->channel_mode_set = ival;
	309	devc->config_dirty = TRUE;
	310	break;
	311	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	312	bval = g_variant_get_boolean(data);
	313	if (bval == devc->over_current_protection_set)
	314	/* Nothing to do. */
	315	break;
	316	devc->over_current_protection_set = bval;
	317	devc->config_dirty = TRUE;
	318	break;
	319	default:
	320	return SR_ERR_NA;
	321	}
	322	} else {
	323	/* Channel group specified: per-channel options. */
	324	/* We only ever have one channel per channel group in this driver. */
	325	ch = cg->channels->data;
	326	channel = ch->index;
	327
	328	switch (key) {
	329	case SR_CONF_VOLTAGE_TARGET:
	330	dval = g_variant_get_double(data);
	331	if (dval < 0 \|\| dval > devc->model->channels[channel].voltage[1])
	332	ret = SR_ERR_ARG;
	333	devc->config[channel].output_voltage_max = dval;
	334	devc->config_dirty = TRUE;
	335	break;
	336	case SR_CONF_CURRENT_LIMIT:
	337	dval = g_variant_get_double(data);
	338	if (dval < 0 \|\| dval > devc->model->channels[channel].current[1])
	339	ret = SR_ERR_ARG;
	340	devc->config[channel].output_current_max = dval;
	341	devc->config_dirty = TRUE;
	342	break;
	343	case SR_CONF_ENABLED:
	344	bval = g_variant_get_boolean(data);
	345	if (bval == devc->config[channel].output_enabled_set)
	346	/* Nothing to do. */
	347	break;
	348	devc->config[channel].output_enabled_set = bval;
	349	devc->config_dirty = TRUE;
	350	break;
	351	default:
	352	ret = SR_ERR_NA;
	353	}
	354	}
	355
	356	return ret;
	357	}
	358
	359	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	360	const struct sr_channel_group *cg)
	361	{
	362	struct dev_context *devc;
	363	struct sr_channel *ch;
	364	GVariant *gvar;
	365	GVariantBuilder gvb;
	366	int channel, ret, i;
	367
	368	/* Always available. */
	369	if (key == SR_CONF_SCAN_OPTIONS) {
	370	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	371	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	372	return SR_OK;
	373	}
	374
	375	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
	376	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	377	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	378	return SR_OK;
	379	}
	380
	381	if (!sdi)
	382	return SR_ERR_ARG;
	383
	384	devc = sdi->priv;
	385	ret = SR_OK;
	386	if (!cg) {
	387	/* No channel group: global options. */
	388	switch (key) {
	389	case SR_CONF_DEVICE_OPTIONS:
	390	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	391	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	392	break;
	393	case SR_CONF_CHANNEL_CONFIG:
	394	if (devc->model->channel_modes == CHANMODE_INDEPENDENT) {
	395	/* The 1-channel models. */
	396	*data = g_variant_new_strv(channel_modes, 1);
	397	} else {
	398	/* The other models support all modes. */
	399	*data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
	400	}
	401	break;
	402	default:
	403	return SR_ERR_NA;
	404	}
	405	} else {
	406	/* Channel group specified: per-channel options. */
	407	if (!sdi)
	408	return SR_ERR_ARG;
	409	/* We only ever have one channel per channel group in this driver. */
	410	ch = cg->channels->data;
	411	channel = ch->index;
	412
	413	switch (key) {
	414	case SR_CONF_DEVICE_OPTIONS:
	415	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	416	devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
	417	break;
	418	case SR_CONF_VOLTAGE_TARGET:
	419	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	420	/* Min, max, step. */
	421	for (i = 0; i < 3; i++) {
	422	gvar = g_variant_new_double(devc->model->channels[channel].voltage[i]);
	423	g_variant_builder_add_value(&gvb, gvar);
	424	}
	425	*data = g_variant_builder_end(&gvb);
	426	break;
	427	case SR_CONF_CURRENT_LIMIT:
	428	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	429	/* Min, max, step. */
	430	for (i = 0; i < 3; i++) {
	431	gvar = g_variant_new_double(devc->model->channels[channel].current[i]);
	432	g_variant_builder_add_value(&gvb, gvar);
	433	}
	434	*data = g_variant_builder_end(&gvb);
	435	break;
	436	default:
	437	return SR_ERR_NA;
	438	}
	439	}
	440
	441	return ret;
	442	}
	443
	444	static int dev_close(struct sr_dev_inst *sdi)
	445	{
	446	struct dev_context *devc;
	447
	448	devc = sdi->priv;
	449	if (devc->config_dirty)
	450	/* Some configuration changes were queued up but didn't
	451	* get sent to the device, likely because we were never
	452	* in acquisition mode. Send them out now. */
	453	send_config(sdi);
	454
	455	return std_serial_dev_close(sdi);
	456	}
	457
	458	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	459	{
	460	struct dev_context *devc;
	461	struct sr_serial_dev_inst *serial;
	462	uint8_t packet[PACKET_SIZE];
	463
	464	if (sdi->status != SR_ST_ACTIVE)
	465	return SR_ERR_DEV_CLOSED;
	466
	467	devc = sdi->priv;
	468	memset(devc->packet, 0x44, PACKET_SIZE);
	469	devc->packet_size = 0;
	470
	471	devc->acquisition_running = TRUE;
	472
	473	serial = sdi->conn;
	474	serial_source_add(sdi->session, serial, G_IO_IN, 50,
	475	atten_pps3xxx_receive_data, (void *)sdi);
	476	std_session_send_df_header(sdi, LOG_PREFIX);
	477
	478	/* Send a "channel" configuration packet now. */
	479	memset(packet, 0, PACKET_SIZE);
	480	packet[0] = 0xaa;
	481	packet[1] = 0xaa;
	482	send_packet(sdi, packet);
	483
	484	return SR_OK;
	485	}
	486
	487	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	488	{
	489	struct dev_context *devc;
	490
	491	if (sdi->status != SR_ST_ACTIVE)
	492	return SR_ERR_DEV_CLOSED;
	493
	494	devc = sdi->priv;
	495	devc->acquisition_running = FALSE;
	496
	497	return SR_OK;
	498	}
	499
	500	SR_PRIV struct sr_dev_driver atten_pps3203_driver_info = {
	501	.name = "atten-pps3203",
	502	.longname = "Atten PPS3203T-3S",
	503	.api_version = 1,
	504	.init = init,
	505	.cleanup = std_cleanup,
	506	.scan = scan_3203,
	507	.dev_list = dev_list,
	508	.dev_clear = NULL,
	509	.config_get = config_get,
	510	.config_set = config_set,
	511	.config_list = config_list,
	512	.dev_open = std_serial_dev_open,
	513	.dev_close = dev_close,
	514	.dev_acquisition_start = dev_acquisition_start,
	515	.dev_acquisition_stop = dev_acquisition_stop,
	516	.context = NULL,
	517	};