[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 <string.h>
#include <errno.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 devopts_drv[] = {
	SR_CONF_POWER_SUPPLY,
	SR_CONF_CONTINUOUS,
};

static const uint32_t devopts_global[] = {
	SR_CONF_OUTPUT_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_OUTPUT_VOLTAGE | SR_CONF_GET,
	SR_CONF_OUTPUT_VOLTAGE_TARGET | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_OUTPUT_CURRENT | SR_CONF_GET,
	SR_CONF_OUTPUT_CURRENT_LIMIT | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_OUTPUT_ENABLED | SR_CONF_GET | SR_CONF_SET,
};

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

static 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 struct sr_dev_driver *di = &atten_pps3203_driver_info;

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

static GSList *scan(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;
	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->priv;
	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;

	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
		return NULL;

	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",
				strerror(errno));
		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 = sr_dev_inst_new();
	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(i, SR_CHANNEL_ANALOG, TRUE, channel);
		sdi->channels = g_slist_append(sdi->channels, ch);
		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(GSList *options)
{
	return scan(options, PPS_3203T_3S);
}

static GSList *dev_list(void)
{
	return ((struct drv_context *)(di->priv))->instances;
}

static int cleanup(void)
{
	return std_dev_clear(di, NULL);
}

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_OUTPUT_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_OUTPUT_VOLTAGE:
			*data = g_variant_new_double(devc->config[channel].output_voltage_last);
			break;
		case SR_CONF_OUTPUT_VOLTAGE_TARGET:
			*data = g_variant_new_double(devc->config[channel].output_voltage_max);
			break;
		case SR_CONF_OUTPUT_CURRENT:
			*data = g_variant_new_double(devc->config[channel].output_current_last);
			break;
		case SR_CONF_OUTPUT_CURRENT_LIMIT:
			*data = g_variant_new_double(devc->config[channel].output_current_max);
			break;
		case SR_CONF_OUTPUT_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_OUTPUT_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_OUTPUT_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_OUTPUT_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_OUTPUT_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,
				devopts_drv, ARRAY_SIZE(devopts_drv), 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_global, ARRAY_SIZE(devopts_global), sizeof(uint32_t));
			break;
		case SR_CONF_OUTPUT_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_OUTPUT_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_OUTPUT_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,
		void *cb_data)
{
	struct dev_context *devc;
	struct sr_serial_dev_inst *serial;
	uint8_t packet[PACKET_SIZE];

	(void)cb_data;

	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(cb_data, 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, void *cb_data)
{
	struct dev_context *devc;

	(void)cb_data;

	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 = 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,
	.priv = 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 <string.h>
	21	#include <errno.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 devopts_drv[] = {
	40	SR_CONF_POWER_SUPPLY,
	41	SR_CONF_CONTINUOUS,
	42	};
	43
	44	static const uint32_t devopts_global[] = {
	45	SR_CONF_OUTPUT_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_OUTPUT_VOLTAGE \| SR_CONF_GET,
	51	SR_CONF_OUTPUT_VOLTAGE_TARGET \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	52	SR_CONF_OUTPUT_CURRENT \| SR_CONF_GET,
	53	SR_CONF_OUTPUT_CURRENT_LIMIT \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	54	SR_CONF_OUTPUT_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 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
	79	SR_PRIV struct sr_dev_driver atten_pps3203_driver_info;
	80	static struct sr_dev_driver *di = &atten_pps3203_driver_info;
	81
	82	static int init(struct sr_context *sr_ctx)
	83	{
	84	return std_init(sr_ctx, di, LOG_PREFIX);
	85	}
	86
	87	static GSList scan(GSList options, int modelid)
	88	{
	89	struct sr_dev_inst *sdi;
	90	struct drv_context *drvc;
	91	struct dev_context *devc;
	92	struct sr_config *src;
	93	struct sr_channel *ch;
	94	struct sr_channel_group *cg;
	95	struct sr_serial_dev_inst *serial;
	96	GSList l, devices;
	97	struct pps_model *model;
	98	uint8_t packet[PACKET_SIZE];
	99	unsigned int i;
	100	int delay_ms, ret;
	101	const char conn, serialcomm;
	102	char channel[10];
	103
	104	devices = NULL;
	105	drvc = di->priv;
	106	drvc->instances = NULL;
	107
	108	conn = serialcomm = NULL;
	109	for (l = options; l; l = l->next) {
	110	src = l->data;
	111	switch (src->key) {
	112	case SR_CONF_CONN:
	113	conn = g_variant_get_string(src->data, NULL);
	114	break;
	115	case SR_CONF_SERIALCOMM:
	116	serialcomm = g_variant_get_string(src->data, NULL);
	117	break;
	118	}
	119	}
	120	if (!conn)
	121	return NULL;
	122	if (!serialcomm)
	123	serialcomm = SERIALCOMM;
	124
	125	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
	126	return NULL;
	127
	128	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
	129	return NULL;
	130	serial_flush(serial);
	131
	132	/* This is how the vendor software scans for hardware. */
	133	memset(packet, 0, PACKET_SIZE);
	134	packet[0] = 0xaa;
	135	packet[1] = 0xaa;
	136	delay_ms = serial_timeout(serial, PACKET_SIZE);
	137	if (serial_write_blocking(serial, packet, PACKET_SIZE, delay_ms) < PACKET_SIZE) {
	138	sr_err("Unable to write while probing for hardware.");
	139	return NULL;
	140	}
	141	/* The device responds with a 24-byte packet when it receives a packet.
	142	* At 9600 baud, 300ms is long enough for it to have arrived. */
	143	g_usleep(300 * 1000);
	144	memset(packet, 0, PACKET_SIZE);
	145	if ((ret = serial_read_nonblocking(serial, packet, PACKET_SIZE)) < 0) {
	146	sr_err("Unable to read while probing for hardware: %s",
	147	strerror(errno));
	148	return NULL;
	149	}
	150	if (ret != PACKET_SIZE \|\| packet[0] != 0xaa \|\| packet[1] != 0xaa) {
	151	/* Doesn't look like an Atten PPS. */
	152	return NULL;
	153	}
	154
	155	model = NULL;
	156	for (i = 0; i < ARRAY_SIZE(models); i++) {
	157	if (models[i].modelid == modelid) {
	158	model = &models[i];
	159	break;
	160	}
	161	}
	162	if (!model) {
	163	sr_err("Unknown modelid %d", modelid);
	164	return NULL;
	165	}
	166
	167	sdi = sr_dev_inst_new();
	168	sdi->status = SR_ST_INACTIVE;
	169	sdi->vendor = g_strdup("Atten");
	170	sdi->model = g_strdup(model->name);
	171	sdi->driver = di;
	172	sdi->inst_type = SR_INST_SERIAL;
	173	sdi->conn = serial;
	174	for (i = 0; i < MAX_CHANNELS; i++) {
	175	snprintf(channel, 10, "CH%d", i + 1);
	176	ch = sr_channel_new(i, SR_CHANNEL_ANALOG, TRUE, channel);
	177	sdi->channels = g_slist_append(sdi->channels, ch);
	178	cg = g_malloc(sizeof(struct sr_channel_group));
	179	cg->name = g_strdup(channel);
	180	cg->channels = g_slist_append(NULL, ch);
	181	cg->priv = NULL;
	182	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	183	}
	184
	185	devc = g_malloc0(sizeof(struct dev_context));
	186	devc->model = model;
	187	devc->config = g_malloc0(sizeof(struct per_channel_config) * model->num_channels);
	188	devc->delay_ms = delay_ms;
	189	sdi->priv = devc;
	190	drvc->instances = g_slist_append(drvc->instances, sdi);
	191	devices = g_slist_append(devices, sdi);
	192
	193	serial_close(serial);
	194	if (!devices)
	195	sr_serial_dev_inst_free(serial);
	196
	197	return devices;
	198	}
	199
	200	static GSList scan_3203(GSList options)
	201	{
	202	return scan(options, PPS_3203T_3S);
	203	}
	204
	205	static GSList *dev_list(void)
	206	{
	207	return ((struct drv_context *)(di->priv))->instances;
	208	}
	209
	210	static int cleanup(void)
	211	{
	212	return std_dev_clear(di, NULL);
	213	}
	214
	215	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	216	const struct sr_channel_group *cg)
	217	{
	218	struct dev_context *devc;
	219	struct sr_channel *ch;
	220	int channel, ret;
	221
	222	if (!sdi)
	223	return SR_ERR_ARG;
	224
	225	devc = sdi->priv;
	226
	227	ret = SR_OK;
	228	if (!cg) {
	229	/* No channel group: global options. */
	230	switch (key) {
	231	case SR_CONF_OUTPUT_CHANNEL_CONFIG:
	232	*data = g_variant_new_string(channel_modes[devc->channel_mode]);
	233	break;
	234	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	235	*data = g_variant_new_boolean(devc->over_current_protection);
	236	break;
	237	default:
	238	return SR_ERR_NA;
	239	}
	240	} else {
	241	/* We only ever have one channel per channel group in this driver. */
	242	ch = cg->channels->data;
	243	channel = ch->index;
	244
	245	switch (key) {
	246	case SR_CONF_OUTPUT_VOLTAGE:
	247	*data = g_variant_new_double(devc->config[channel].output_voltage_last);
	248	break;
	249	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
	250	*data = g_variant_new_double(devc->config[channel].output_voltage_max);
	251	break;
	252	case SR_CONF_OUTPUT_CURRENT:
	253	*data = g_variant_new_double(devc->config[channel].output_current_last);
	254	break;
	255	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	256	*data = g_variant_new_double(devc->config[channel].output_current_max);
	257	break;
	258	case SR_CONF_OUTPUT_ENABLED:
	259	*data = g_variant_new_boolean(devc->config[channel].output_enabled);
	260	break;
	261	default:
	262	return SR_ERR_NA;
	263	}
	264	}
	265
	266	return ret;
	267	}
	268
	269	static int find_str(const char str, const char *strings, int array_size)
	270	{
	271	int idx, i;
	272
	273	idx = -1;
	274	for (i = 0; i < array_size; i++) {
	275	if (!strcmp(str, strings[i])) {
	276	idx = i;
	277	break;
	278	}
	279	}
	280
	281	return idx;
	282	}
	283
	284	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	285	const struct sr_channel_group *cg)
	286	{
	287	struct dev_context *devc;
	288	struct sr_channel *ch;
	289	gdouble dval;
	290	int channel, ret, ival;
	291	const char *sval;
	292	gboolean bval;
	293
	294	if (sdi->status != SR_ST_ACTIVE)
	295	return SR_ERR_DEV_CLOSED;
	296
	297	ret = SR_OK;
	298	devc = sdi->priv;
	299	if (!cg) {
	300	/* No channel group: global options. */
	301	switch (key) {
	302	case SR_CONF_OUTPUT_CHANNEL_CONFIG:
	303	sval = g_variant_get_string(data, NULL);
	304	if ((ival = find_str(sval, channel_modes,
	305	ARRAY_SIZE(channel_modes))) == -1) {
	306	ret = SR_ERR_ARG;
	307	break;
	308	}
	309	if (devc->model->channel_modes && (1 << ival) == 0) {
	310	/* Not supported on this model. */
	311	ret = SR_ERR_ARG;
	312	}
	313	if (ival == devc->channel_mode_set)
	314	/* Nothing to do. */
	315	break;
	316	devc->channel_mode_set = ival;
	317	devc->config_dirty = TRUE;
	318	break;
	319	case SR_CONF_OVER_CURRENT_PROTECTION_ENABLED:
	320	bval = g_variant_get_boolean(data);
	321	if (bval == devc->over_current_protection_set)
	322	/* Nothing to do. */
	323	break;
	324	devc->over_current_protection_set = bval;
	325	devc->config_dirty = TRUE;
	326	break;
	327	default:
	328	return SR_ERR_NA;
	329	}
	330	} else {
	331	/* Channel group specified: per-channel options. */
	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_OUTPUT_VOLTAGE_TARGET:
	338	dval = g_variant_get_double(data);
	339	if (dval < 0 \|\| dval > devc->model->channels[channel].voltage[1])
	340	ret = SR_ERR_ARG;
	341	devc->config[channel].output_voltage_max = dval;
	342	devc->config_dirty = TRUE;
	343	break;
	344	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	345	dval = g_variant_get_double(data);
	346	if (dval < 0 \|\| dval > devc->model->channels[channel].current[1])
	347	ret = SR_ERR_ARG;
	348	devc->config[channel].output_current_max = dval;
	349	devc->config_dirty = TRUE;
	350	break;
	351	case SR_CONF_OUTPUT_ENABLED:
	352	bval = g_variant_get_boolean(data);
	353	if (bval == devc->config[channel].output_enabled_set)
	354	/* Nothing to do. */
	355	break;
	356	devc->config[channel].output_enabled_set = bval;
	357	devc->config_dirty = TRUE;
	358	break;
	359	default:
	360	ret = SR_ERR_NA;
	361	}
	362	}
	363
	364
	365	return ret;
	366	}
	367
	368	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	369	const struct sr_channel_group *cg)
	370	{
	371	struct dev_context *devc;
	372	struct sr_channel *ch;
	373	GVariant *gvar;
	374	GVariantBuilder gvb;
	375	int channel, ret, i;
	376
	377	/* Always available. */
	378	if (key == SR_CONF_SCAN_OPTIONS) {
	379	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	380	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	381	return SR_OK;
	382	}
	383
	384	if (key == SR_CONF_DEVICE_OPTIONS && !sdi) {
	385	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	386	devopts_drv, ARRAY_SIZE(devopts_drv), sizeof(uint32_t));
	387	return SR_OK;
	388	}
	389
	390	if (!sdi)
	391	return SR_ERR_ARG;
	392
	393	devc = sdi->priv;
	394	ret = SR_OK;
	395	if (!cg) {
	396	/* No channel group: global options. */
	397	switch (key) {
	398	case SR_CONF_DEVICE_OPTIONS:
	399	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	400	devopts_global, ARRAY_SIZE(devopts_global), sizeof(uint32_t));
	401	break;
	402	case SR_CONF_OUTPUT_CHANNEL_CONFIG:
	403	if (devc->model->channel_modes == CHANMODE_INDEPENDENT) {
	404	/* The 1-channel models. */
	405	*data = g_variant_new_strv(channel_modes, 1);
	406	} else {
	407	/* The other models support all modes. */
	408	*data = g_variant_new_strv(channel_modes, ARRAY_SIZE(channel_modes));
	409	}
	410	break;
	411	default:
	412	return SR_ERR_NA;
	413	}
	414	} else {
	415	/* Channel group specified: per-channel options. */
	416	if (!sdi)
	417	return SR_ERR_ARG;
	418	/* We only ever have one channel per channel group in this driver. */
	419	ch = cg->channels->data;
	420	channel = ch->index;
	421
	422	switch (key) {
	423	case SR_CONF_DEVICE_OPTIONS:
	424	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	425	devopts_cg, ARRAY_SIZE(devopts_cg), sizeof(uint32_t));
	426	break;
	427	case SR_CONF_OUTPUT_VOLTAGE_TARGET:
	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].voltage[i]);
	432	g_variant_builder_add_value(&gvb, gvar);
	433	}
	434	*data = g_variant_builder_end(&gvb);
	435	break;
	436	case SR_CONF_OUTPUT_CURRENT_LIMIT:
	437	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	438	/* Min, max, step. */
	439	for (i = 0; i < 3; i++) {
	440	gvar = g_variant_new_double(devc->model->channels[channel].current[i]);
	441	g_variant_builder_add_value(&gvb, gvar);
	442	}
	443	*data = g_variant_builder_end(&gvb);
	444	break;
	445	default:
	446	return SR_ERR_NA;
	447	}
	448	}
	449
	450	return ret;
	451	}
	452
	453	static int dev_close(struct sr_dev_inst *sdi)
	454	{
	455	struct dev_context *devc;
	456
	457	devc = sdi->priv;
	458	if (devc->config_dirty)
	459	/* Some configuration changes were queued up but didn't
	460	* get sent to the device, likely because we were never
	461	* in acquisition mode. Send them out now. */
	462	send_config(sdi);
	463
	464	return std_serial_dev_close(sdi);
	465	}
	466
	467	static int dev_acquisition_start(const struct sr_dev_inst *sdi,
	468	void *cb_data)
	469	{
	470	struct dev_context *devc;
	471	struct sr_serial_dev_inst *serial;
	472	uint8_t packet[PACKET_SIZE];
	473
	474	(void)cb_data;
	475
	476	if (sdi->status != SR_ST_ACTIVE)
	477	return SR_ERR_DEV_CLOSED;
	478
	479	devc = sdi->priv;
	480	memset(devc->packet, 0x44, PACKET_SIZE);
	481	devc->packet_size = 0;
	482
	483	devc->acquisition_running = TRUE;
	484
	485	serial = sdi->conn;
	486	serial_source_add(sdi->session, serial, G_IO_IN, 50,
	487	atten_pps3xxx_receive_data, (void *)sdi);
	488	std_session_send_df_header(cb_data, LOG_PREFIX);
	489
	490	/* Send a "channel" configuration packet now. */
	491	memset(packet, 0, PACKET_SIZE);
	492	packet[0] = 0xaa;
	493	packet[1] = 0xaa;
	494	send_packet(sdi, packet);
	495
	496	return SR_OK;
	497	}
	498
	499	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	500	{
	501	struct dev_context *devc;
	502
	503	(void)cb_data;
	504
	505	if (sdi->status != SR_ST_ACTIVE)
	506	return SR_ERR_DEV_CLOSED;
	507
	508	devc = sdi->priv;
	509	devc->acquisition_running = FALSE;
	510
	511	return SR_OK;
	512	}
	513
	514	SR_PRIV struct sr_dev_driver atten_pps3203_driver_info = {
	515	.name = "atten-pps3203",
	516	.longname = "Atten PPS3203T-3S",
	517	.api_version = 1,
	518	.init = init,
	519	.cleanup = cleanup,
	520	.scan = scan_3203,
	521	.dev_list = dev_list,
	522	.dev_clear = NULL,
	523	.config_get = config_get,
	524	.config_set = config_set,
	525	.config_list = config_list,
	526	.dev_open = std_serial_dev_open,
	527	.dev_close = dev_close,
	528	.dev_acquisition_start = dev_acquisition_start,
	529	.dev_acquisition_stop = dev_acquisition_stop,
	530	.priv = NULL,
	531	};