[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 } },
		},
	},
};

SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;

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