[libsigrok.git] / src / hardware / demo / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
 * Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
 * Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#include "protocol.h"

#define DEFAULT_NUM_LOGIC_CHANNELS	8
#define DEFAULT_NUM_ANALOG_CHANNELS	4

#define DEFAULT_ANALOG_AMPLITUDE	10

static const char *logic_pattern_str[] = {
	"sigrok",
	"random",
	"incremental",
	"all-low",
	"all-high",
};

static const uint32_t drvopts[] = {
	SR_CONF_DEMO_DEV,
	SR_CONF_LOGIC_ANALYZER,
	SR_CONF_OSCILLOSCOPE,
};

static const uint32_t scanopts[] = {
	SR_CONF_NUM_LOGIC_CHANNELS,
	SR_CONF_NUM_ANALOG_CHANNELS,
};

static const uint32_t devopts[] = {
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_SAMPLERATE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_AVERAGING | SR_CONF_GET | SR_CONF_SET,
	SR_CONF_AVG_SAMPLES | SR_CONF_GET | SR_CONF_SET,
};

static const uint32_t devopts_cg_logic[] = {
	SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
};

static const uint32_t devopts_cg_analog_group[] = {
	SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
};

static const uint32_t devopts_cg_analog_channel[] = {
	SR_CONF_PATTERN_MODE | SR_CONF_GET | SR_CONF_SET | SR_CONF_LIST,
	SR_CONF_AMPLITUDE | SR_CONF_GET | SR_CONF_SET,
};

static const uint64_t samplerates[] = {
	SR_HZ(1),
	SR_GHZ(1),
	SR_HZ(1),
};

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_channel *ch;
	struct sr_channel_group *cg, *acg;
	struct sr_config *src;
	struct analog_gen *ag;
	GSList *l;
	int num_logic_channels, num_analog_channels, pattern, i;
	char channel_name[16];

	num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS;
	num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS;
	for (l = options; l; l = l->next) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_NUM_LOGIC_CHANNELS:
			num_logic_channels = g_variant_get_int32(src->data);
			break;
		case SR_CONF_NUM_ANALOG_CHANNELS:
			num_analog_channels = g_variant_get_int32(src->data);
			break;
		}
	}

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->model = g_strdup("Demo device");

	devc = g_malloc0(sizeof(struct dev_context));
	devc->cur_samplerate = SR_KHZ(200);
	devc->num_logic_channels = num_logic_channels;
	devc->logic_unitsize = (devc->num_logic_channels + 7) / 8;
	devc->logic_pattern = PATTERN_SIGROK;
	devc->num_analog_channels = num_analog_channels;

	if (num_logic_channels > 0) {
		/* Logic channels, all in one channel group. */
		cg = g_malloc0(sizeof(struct sr_channel_group));
		cg->name = g_strdup("Logic");
		for (i = 0; i < num_logic_channels; i++) {
			sprintf(channel_name, "D%d", i);
			ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
			cg->channels = g_slist_append(cg->channels, ch);
		}
		sdi->channel_groups = g_slist_append(NULL, cg);
	}

	/* Analog channels, channel groups and pattern generators. */
	if (num_analog_channels > 0) {
		pattern = 0;
		/* An "Analog" channel group with all analog channels in it. */
		acg = g_malloc0(sizeof(struct sr_channel_group));
		acg->name = g_strdup("Analog");
		sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);

		devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
		for (i = 0; i < num_analog_channels; i++) {
			snprintf(channel_name, 16, "A%d", i);
			ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG,
					TRUE, channel_name);
			acg->channels = g_slist_append(acg->channels, ch);

			/* Every analog channel gets its own channel group as well. */
			cg = g_malloc0(sizeof(struct sr_channel_group));
			cg->name = g_strdup(channel_name);
			cg->channels = g_slist_append(NULL, ch);
			sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);

			/* Every channel gets a generator struct. */
			ag = g_malloc(sizeof(struct analog_gen));
			ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
			sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
			ag->packet.meaning->channels = cg->channels;
			ag->packet.meaning->mq = 0;
			ag->packet.meaning->mqflags = 0;
			ag->packet.meaning->unit = SR_UNIT_VOLT;
			ag->packet.data = ag->pattern_data;
			ag->pattern = pattern;
			ag->avg_val = 0.0f;
			ag->num_avgs = 0;
			g_hash_table_insert(devc->ch_ag, ch, ag);

			if (++pattern == ARRAY_SIZE(analog_pattern_str))
				pattern = 0;
		}
	}

	sdi->priv = devc;

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

static int dev_open(struct sr_dev_inst *sdi)
{
	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	sdi->status = SR_ST_INACTIVE;

	return SR_OK;
}

static void clear_helper(void *priv)
{
	struct dev_context *devc;
	GHashTableIter iter;
	void *value;

	devc = priv;

	/* Analog generators. */
	g_hash_table_iter_init(&iter, devc->ch_ag);
	while (g_hash_table_iter_next(&iter, NULL, &value))
		g_free(value);
	g_hash_table_unref(devc->ch_ag);
	g_free(devc);
}

static int dev_clear(const struct sr_dev_driver *di)
{
	return std_dev_clear(di, clear_helper);
}

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;
	struct analog_gen *ag;
	int pattern;

	if (!sdi)
		return SR_ERR_ARG;

	devc = sdi->priv;
	switch (key) {
	case SR_CONF_SAMPLERATE:
		*data = g_variant_new_uint64(devc->cur_samplerate);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		*data = g_variant_new_uint64(devc->limit_samples);
		break;
	case SR_CONF_LIMIT_MSEC:
		*data = g_variant_new_uint64(devc->limit_msec);
		break;
	case SR_CONF_AVERAGING:
		*data = g_variant_new_boolean(devc->avg);
		break;
	case SR_CONF_AVG_SAMPLES:
		*data = g_variant_new_uint64(devc->avg_samples);
		break;
	case SR_CONF_PATTERN_MODE:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		/* Any channel in the group will do. */
		ch = cg->channels->data;
		if (ch->type == SR_CHANNEL_LOGIC) {
			pattern = devc->logic_pattern;
			*data = g_variant_new_string(logic_pattern_str[pattern]);
		} else if (ch->type == SR_CHANNEL_ANALOG) {
			ag = g_hash_table_lookup(devc->ch_ag, ch);
			pattern = ag->pattern;
			*data = g_variant_new_string(analog_pattern_str[pattern]);
		} else
			return SR_ERR_BUG;
		break;
	case SR_CONF_AMPLITUDE:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		/* Any channel in the group will do. */
		ch = cg->channels->data;
		if (ch->type != SR_CHANNEL_ANALOG)
			return SR_ERR_ARG;
		ag = g_hash_table_lookup(devc->ch_ag, ch);
		*data = g_variant_new_double(ag->amplitude);
		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 analog_gen *ag;
	struct sr_channel *ch;
	GSList *l;
	int logic_pattern, analog_pattern, ret;
	unsigned int i;
	const char *stropt;

	devc = sdi->priv;

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

	ret = SR_OK;
	switch (key) {
	case SR_CONF_SAMPLERATE:
		devc->cur_samplerate = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_msec = 0;
		devc->limit_samples = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_MSEC:
		devc->limit_msec = g_variant_get_uint64(data);
		devc->limit_samples = 0;
		break;
	case SR_CONF_AVERAGING:
		devc->avg = g_variant_get_boolean(data);
		sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling");
		break;
	case SR_CONF_AVG_SAMPLES:
		devc->avg_samples = g_variant_get_uint64(data);
		sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples);
		break;
	case SR_CONF_PATTERN_MODE:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		stropt = g_variant_get_string(data, NULL);
		logic_pattern = analog_pattern = -1;
		for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
			if (!strcmp(stropt, logic_pattern_str[i])) {
				logic_pattern = i;
				break;
			}
		}
		for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
			if (!strcmp(stropt, analog_pattern_str[i])) {
				analog_pattern = i;
				break;
			}
		}
		if (logic_pattern == -1 && analog_pattern == -1)
			return SR_ERR_ARG;
		for (l = cg->channels; l; l = l->next) {
			ch = l->data;
			if (ch->type == SR_CHANNEL_LOGIC) {
				if (logic_pattern == -1)
					return SR_ERR_ARG;
				sr_dbg("Setting logic pattern to %s",
						logic_pattern_str[logic_pattern]);
				devc->logic_pattern = logic_pattern;
				/* Might as well do this now, these are static. */
				if (logic_pattern == PATTERN_ALL_LOW)
					memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
				else if (logic_pattern == PATTERN_ALL_HIGH)
					memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
			} else if (ch->type == SR_CHANNEL_ANALOG) {
				if (analog_pattern == -1)
					return SR_ERR_ARG;
				sr_dbg("Setting analog pattern for channel %s to %s",
						ch->name, analog_pattern_str[analog_pattern]);
				ag = g_hash_table_lookup(devc->ch_ag, ch);
				ag->pattern = analog_pattern;
			} else
				return SR_ERR_BUG;
		}
		break;
	case SR_CONF_AMPLITUDE:
		if (!cg)
			return SR_ERR_CHANNEL_GROUP;
		for (l = cg->channels; l; l = l->next) {
			ch = l->data;
			if (ch->type != SR_CHANNEL_ANALOG)
				return SR_ERR_ARG;
			ag = g_hash_table_lookup(devc->ch_ag, ch);
			ag->amplitude = g_variant_get_double(data);
		}
		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 sr_channel *ch;
	GVariant *gvar;
	GVariantBuilder gvb;

	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;

	if (!cg) {
		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_SAMPLERATE:
			g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
			gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
					ARRAY_SIZE(samplerates), sizeof(uint64_t));
			g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
			*data = g_variant_builder_end(&gvb);
			break;
		default:
			return SR_ERR_NA;
		}
	} else {
		ch = cg->channels->data;
		switch (key) {
		case SR_CONF_DEVICE_OPTIONS:
			if (ch->type == SR_CHANNEL_LOGIC)
				*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
						devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
						sizeof(uint32_t));
			else if (ch->type == SR_CHANNEL_ANALOG) {
				if (strcmp(cg->name, "Analog") == 0)
					*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
							devopts_cg_analog_group, ARRAY_SIZE(devopts_cg_analog_group),
							sizeof(uint32_t));
				else
					*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
							devopts_cg_analog_channel, ARRAY_SIZE(devopts_cg_analog_channel),
							sizeof(uint32_t));
			}
			else
				return SR_ERR_BUG;
			break;
		case SR_CONF_PATTERN_MODE:
			/* The analog group (with all 4 channels) shall not have a pattern property. */
			if (strcmp(cg->name, "Analog") == 0)
				return SR_ERR_NA;

			if (ch->type == SR_CHANNEL_LOGIC)
				*data = g_variant_new_strv(logic_pattern_str,
						ARRAY_SIZE(logic_pattern_str));
			else if (ch->type == SR_CHANNEL_ANALOG)
				*data = g_variant_new_strv(analog_pattern_str,
						ARRAY_SIZE(analog_pattern_str));
			else
				return SR_ERR_BUG;
			break;
		default:
			return SR_ERR_NA;
		}
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	GHashTableIter iter;
	void *value;

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

	devc = sdi->priv;
	devc->sent_samples = 0;

	g_hash_table_iter_init(&iter, devc->ch_ag);
	while (g_hash_table_iter_next(&iter, NULL, &value))
		demo_generate_analog_pattern(value, devc->cur_samplerate);

	sr_session_source_add(sdi->session, -1, 0, 100,
			demo_prepare_data, (struct sr_dev_inst *)sdi);

	std_session_send_df_header(sdi);

	/* We use this timestamp to decide how many more samples to send. */
	devc->start_us = g_get_monotonic_time();
	devc->spent_us = 0;

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	sr_dbg("Stopping acquisition.");
	sr_session_source_remove(sdi->session, -1);
	std_session_send_df_end(sdi);

	return SR_OK;
}

static struct sr_dev_driver demo_driver_info = {
	.name = "demo",
	.longname = "Demo driver and pattern generator",
	.api_version = 1,
	.init = std_init,
	.cleanup = std_cleanup,
	.scan = scan,
	.dev_list = std_dev_list,
	.dev_clear = dev_clear,
	.config_get = config_get,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = dev_open,
	.dev_close = dev_close,
	.dev_acquisition_start = dev_acquisition_start,
	.dev_acquisition_stop = dev_acquisition_stop,
	.context = NULL,
};
SR_REGISTER_DEV_DRIVER(demo_driver_info);
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2010 Uwe Hermann <uwe@hermann-uwe.de>
	5	* Copyright (C) 2011 Olivier Fauchon <olivier@aixmarseille.com>
	6	* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.com>
	7	* Copyright (C) 2015 Bartosz Golaszewski <bgolaszewski@baylibre.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License as published by
	11	* the Free Software Foundation; either version 2 of the License, or
	12	* (at your option) any later version.
	13	*
	14	* This program is distributed in the hope that it will be useful,
	15	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	* GNU General Public License for more details.
	18	*
	19	* You should have received a copy of the GNU General Public License
	20	* along with this program; if not, write to the Free Software
	21	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	22	*/
	23
	24	#include <config.h>
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <math.h>
	28	#include <libsigrok/libsigrok.h>
	29	#include "libsigrok-internal.h"
	30	#include "protocol.h"
	31
	32	#define DEFAULT_NUM_LOGIC_CHANNELS 8
	33	#define DEFAULT_NUM_ANALOG_CHANNELS 4
	34
	35	#define DEFAULT_ANALOG_AMPLITUDE 10
	36
	37	static const char *logic_pattern_str[] = {
	38	"sigrok",
	39	"random",
	40	"incremental",
	41	"all-low",
	42	"all-high",
	43	};
	44
	45	static const uint32_t drvopts[] = {
	46	SR_CONF_DEMO_DEV,
	47	SR_CONF_LOGIC_ANALYZER,
	48	SR_CONF_OSCILLOSCOPE,
	49	};
	50
	51	static const uint32_t scanopts[] = {
	52	SR_CONF_NUM_LOGIC_CHANNELS,
	53	SR_CONF_NUM_ANALOG_CHANNELS,
	54	};
	55
	56	static const uint32_t devopts[] = {
	57	SR_CONF_CONTINUOUS,
	58	SR_CONF_LIMIT_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	59	SR_CONF_LIMIT_MSEC \| SR_CONF_GET \| SR_CONF_SET,
	60	SR_CONF_SAMPLERATE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	61	SR_CONF_AVERAGING \| SR_CONF_GET \| SR_CONF_SET,
	62	SR_CONF_AVG_SAMPLES \| SR_CONF_GET \| SR_CONF_SET,
	63	};
	64
	65	static const uint32_t devopts_cg_logic[] = {
	66	SR_CONF_PATTERN_MODE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	67	};
	68
	69	static const uint32_t devopts_cg_analog_group[] = {
	70	SR_CONF_AMPLITUDE \| SR_CONF_GET \| SR_CONF_SET,
	71	};
	72
	73	static const uint32_t devopts_cg_analog_channel[] = {
	74	SR_CONF_PATTERN_MODE \| SR_CONF_GET \| SR_CONF_SET \| SR_CONF_LIST,
	75	SR_CONF_AMPLITUDE \| SR_CONF_GET \| SR_CONF_SET,
	76	};
	77
	78	static const uint64_t samplerates[] = {
	79	SR_HZ(1),
	80	SR_GHZ(1),
	81	SR_HZ(1),
	82	};
	83
	84	static GSList scan(struct sr_dev_driver di, GSList *options)
	85	{
	86	struct dev_context *devc;
	87	struct sr_dev_inst *sdi;
	88	struct sr_channel *ch;
	89	struct sr_channel_group cg, acg;
	90	struct sr_config *src;
	91	struct analog_gen *ag;
	92	GSList *l;
	93	int num_logic_channels, num_analog_channels, pattern, i;
	94	char channel_name[16];
	95
	96	num_logic_channels = DEFAULT_NUM_LOGIC_CHANNELS;
	97	num_analog_channels = DEFAULT_NUM_ANALOG_CHANNELS;
	98	for (l = options; l; l = l->next) {
	99	src = l->data;
	100	switch (src->key) {
	101	case SR_CONF_NUM_LOGIC_CHANNELS:
	102	num_logic_channels = g_variant_get_int32(src->data);
	103	break;
	104	case SR_CONF_NUM_ANALOG_CHANNELS:
	105	num_analog_channels = g_variant_get_int32(src->data);
	106	break;
	107	}
	108	}
	109
	110	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	111	sdi->status = SR_ST_INACTIVE;
	112	sdi->model = g_strdup("Demo device");
	113
	114	devc = g_malloc0(sizeof(struct dev_context));
	115	devc->cur_samplerate = SR_KHZ(200);
	116	devc->num_logic_channels = num_logic_channels;
	117	devc->logic_unitsize = (devc->num_logic_channels + 7) / 8;
	118	devc->logic_pattern = PATTERN_SIGROK;
	119	devc->num_analog_channels = num_analog_channels;
	120
	121	if (num_logic_channels > 0) {
	122	/* Logic channels, all in one channel group. */
	123	cg = g_malloc0(sizeof(struct sr_channel_group));
	124	cg->name = g_strdup("Logic");
	125	for (i = 0; i < num_logic_channels; i++) {
	126	sprintf(channel_name, "D%d", i);
	127	ch = sr_channel_new(sdi, i, SR_CHANNEL_LOGIC, TRUE, channel_name);
	128	cg->channels = g_slist_append(cg->channels, ch);
	129	}
	130	sdi->channel_groups = g_slist_append(NULL, cg);
	131	}
	132
	133	/* Analog channels, channel groups and pattern generators. */
	134	if (num_analog_channels > 0) {
	135	pattern = 0;
	136	/* An "Analog" channel group with all analog channels in it. */
	137	acg = g_malloc0(sizeof(struct sr_channel_group));
	138	acg->name = g_strdup("Analog");
	139	sdi->channel_groups = g_slist_append(sdi->channel_groups, acg);
	140
	141	devc->ch_ag = g_hash_table_new(g_direct_hash, g_direct_equal);
	142	for (i = 0; i < num_analog_channels; i++) {
	143	snprintf(channel_name, 16, "A%d", i);
	144	ch = sr_channel_new(sdi, i + num_logic_channels, SR_CHANNEL_ANALOG,
	145	TRUE, channel_name);
	146	acg->channels = g_slist_append(acg->channels, ch);
	147
	148	/* Every analog channel gets its own channel group as well. */
	149	cg = g_malloc0(sizeof(struct sr_channel_group));
	150	cg->name = g_strdup(channel_name);
	151	cg->channels = g_slist_append(NULL, ch);
	152	sdi->channel_groups = g_slist_append(sdi->channel_groups, cg);
	153
	154	/* Every channel gets a generator struct. */
	155	ag = g_malloc(sizeof(struct analog_gen));
	156	ag->amplitude = DEFAULT_ANALOG_AMPLITUDE;
	157	sr_analog_init(&ag->packet, &ag->encoding, &ag->meaning, &ag->spec, 2);
	158	ag->packet.meaning->channels = cg->channels;
	159	ag->packet.meaning->mq = 0;
	160	ag->packet.meaning->mqflags = 0;
	161	ag->packet.meaning->unit = SR_UNIT_VOLT;
	162	ag->packet.data = ag->pattern_data;
	163	ag->pattern = pattern;
	164	ag->avg_val = 0.0f;
	165	ag->num_avgs = 0;
	166	g_hash_table_insert(devc->ch_ag, ch, ag);
	167
	168	if (++pattern == ARRAY_SIZE(analog_pattern_str))
	169	pattern = 0;
	170	}
	171	}
	172
	173	sdi->priv = devc;
	174
	175	return std_scan_complete(di, g_slist_append(NULL, sdi));
	176	}
	177
	178	static int dev_open(struct sr_dev_inst *sdi)
	179	{
	180	sdi->status = SR_ST_ACTIVE;
	181
	182	return SR_OK;
	183	}
	184
	185	static int dev_close(struct sr_dev_inst *sdi)
	186	{
	187	sdi->status = SR_ST_INACTIVE;
	188
	189	return SR_OK;
	190	}
	191
	192	static void clear_helper(void *priv)
	193	{
	194	struct dev_context *devc;
	195	GHashTableIter iter;
	196	void *value;
	197
	198	devc = priv;
	199
	200	/* Analog generators. */
	201	g_hash_table_iter_init(&iter, devc->ch_ag);
	202	while (g_hash_table_iter_next(&iter, NULL, &value))
	203	g_free(value);
	204	g_hash_table_unref(devc->ch_ag);
	205	g_free(devc);
	206	}
	207
	208	static int dev_clear(const struct sr_dev_driver *di)
	209	{
	210	return std_dev_clear(di, clear_helper);
	211	}
	212
	213	static int config_get(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	214	const struct sr_channel_group *cg)
	215	{
	216	struct dev_context *devc;
	217	struct sr_channel *ch;
	218	struct analog_gen *ag;
	219	int pattern;
	220
	221	if (!sdi)
	222	return SR_ERR_ARG;
	223
	224	devc = sdi->priv;
	225	switch (key) {
	226	case SR_CONF_SAMPLERATE:
	227	*data = g_variant_new_uint64(devc->cur_samplerate);
	228	break;
	229	case SR_CONF_LIMIT_SAMPLES:
	230	*data = g_variant_new_uint64(devc->limit_samples);
	231	break;
	232	case SR_CONF_LIMIT_MSEC:
	233	*data = g_variant_new_uint64(devc->limit_msec);
	234	break;
	235	case SR_CONF_AVERAGING:
	236	*data = g_variant_new_boolean(devc->avg);
	237	break;
	238	case SR_CONF_AVG_SAMPLES:
	239	*data = g_variant_new_uint64(devc->avg_samples);
	240	break;
	241	case SR_CONF_PATTERN_MODE:
	242	if (!cg)
	243	return SR_ERR_CHANNEL_GROUP;
	244	/* Any channel in the group will do. */
	245	ch = cg->channels->data;
	246	if (ch->type == SR_CHANNEL_LOGIC) {
	247	pattern = devc->logic_pattern;
	248	*data = g_variant_new_string(logic_pattern_str[pattern]);
	249	} else if (ch->type == SR_CHANNEL_ANALOG) {
	250	ag = g_hash_table_lookup(devc->ch_ag, ch);
	251	pattern = ag->pattern;
	252	*data = g_variant_new_string(analog_pattern_str[pattern]);
	253	} else
	254	return SR_ERR_BUG;
	255	break;
	256	case SR_CONF_AMPLITUDE:
	257	if (!cg)
	258	return SR_ERR_CHANNEL_GROUP;
	259	/* Any channel in the group will do. */
	260	ch = cg->channels->data;
	261	if (ch->type != SR_CHANNEL_ANALOG)
	262	return SR_ERR_ARG;
	263	ag = g_hash_table_lookup(devc->ch_ag, ch);
	264	*data = g_variant_new_double(ag->amplitude);
	265	break;
	266	default:
	267	return SR_ERR_NA;
	268	}
	269
	270	return SR_OK;
	271	}
	272
	273	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	274	const struct sr_channel_group *cg)
	275	{
	276	struct dev_context *devc;
	277	struct analog_gen *ag;
	278	struct sr_channel *ch;
	279	GSList *l;
	280	int logic_pattern, analog_pattern, ret;
	281	unsigned int i;
	282	const char *stropt;
	283
	284	devc = sdi->priv;
	285
	286	if (sdi->status != SR_ST_ACTIVE)
	287	return SR_ERR_DEV_CLOSED;
	288
	289	ret = SR_OK;
	290	switch (key) {
	291	case SR_CONF_SAMPLERATE:
	292	devc->cur_samplerate = g_variant_get_uint64(data);
	293	break;
	294	case SR_CONF_LIMIT_SAMPLES:
	295	devc->limit_msec = 0;
	296	devc->limit_samples = g_variant_get_uint64(data);
	297	break;
	298	case SR_CONF_LIMIT_MSEC:
	299	devc->limit_msec = g_variant_get_uint64(data);
	300	devc->limit_samples = 0;
	301	break;
	302	case SR_CONF_AVERAGING:
	303	devc->avg = g_variant_get_boolean(data);
	304	sr_dbg("%s averaging", devc->avg ? "Enabling" : "Disabling");
	305	break;
	306	case SR_CONF_AVG_SAMPLES:
	307	devc->avg_samples = g_variant_get_uint64(data);
	308	sr_dbg("Setting averaging rate to %" PRIu64, devc->avg_samples);
	309	break;
	310	case SR_CONF_PATTERN_MODE:
	311	if (!cg)
	312	return SR_ERR_CHANNEL_GROUP;
	313	stropt = g_variant_get_string(data, NULL);
	314	logic_pattern = analog_pattern = -1;
	315	for (i = 0; i < ARRAY_SIZE(logic_pattern_str); i++) {
	316	if (!strcmp(stropt, logic_pattern_str[i])) {
	317	logic_pattern = i;
	318	break;
	319	}
	320	}
	321	for (i = 0; i < ARRAY_SIZE(analog_pattern_str); i++) {
	322	if (!strcmp(stropt, analog_pattern_str[i])) {
	323	analog_pattern = i;
	324	break;
	325	}
	326	}
	327	if (logic_pattern == -1 && analog_pattern == -1)
	328	return SR_ERR_ARG;
	329	for (l = cg->channels; l; l = l->next) {
	330	ch = l->data;
	331	if (ch->type == SR_CHANNEL_LOGIC) {
	332	if (logic_pattern == -1)
	333	return SR_ERR_ARG;
	334	sr_dbg("Setting logic pattern to %s",
	335	logic_pattern_str[logic_pattern]);
	336	devc->logic_pattern = logic_pattern;
	337	/* Might as well do this now, these are static. */
	338	if (logic_pattern == PATTERN_ALL_LOW)
	339	memset(devc->logic_data, 0x00, LOGIC_BUFSIZE);
	340	else if (logic_pattern == PATTERN_ALL_HIGH)
	341	memset(devc->logic_data, 0xff, LOGIC_BUFSIZE);
	342	} else if (ch->type == SR_CHANNEL_ANALOG) {
	343	if (analog_pattern == -1)
	344	return SR_ERR_ARG;
	345	sr_dbg("Setting analog pattern for channel %s to %s",
	346	ch->name, analog_pattern_str[analog_pattern]);
	347	ag = g_hash_table_lookup(devc->ch_ag, ch);
	348	ag->pattern = analog_pattern;
	349	} else
	350	return SR_ERR_BUG;
	351	}
	352	break;
	353	case SR_CONF_AMPLITUDE:
	354	if (!cg)
	355	return SR_ERR_CHANNEL_GROUP;
	356	for (l = cg->channels; l; l = l->next) {
	357	ch = l->data;
	358	if (ch->type != SR_CHANNEL_ANALOG)
	359	return SR_ERR_ARG;
	360	ag = g_hash_table_lookup(devc->ch_ag, ch);
	361	ag->amplitude = g_variant_get_double(data);
	362	}
	363	break;
	364	default:
	365	ret = SR_ERR_NA;
	366	}
	367
	368	return ret;
	369	}
	370
	371	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	372	const struct sr_channel_group *cg)
	373	{
	374	struct sr_channel *ch;
	375	GVariant *gvar;
	376	GVariantBuilder gvb;
	377
	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	drvopts, ARRAY_SIZE(drvopts), sizeof(uint32_t));
	387	return SR_OK;
	388	}
	389
	390	if (!sdi)
	391	return SR_ERR_ARG;
	392
	393	if (!cg) {
	394	switch (key) {
	395	case SR_CONF_DEVICE_OPTIONS:
	396	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	397	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	398	break;
	399	case SR_CONF_SAMPLERATE:
	400	g_variant_builder_init(&gvb, G_VARIANT_TYPE("a{sv}"));
	401	gvar = g_variant_new_fixed_array(G_VARIANT_TYPE("t"), samplerates,
	402	ARRAY_SIZE(samplerates), sizeof(uint64_t));
	403	g_variant_builder_add(&gvb, "{sv}", "samplerate-steps", gvar);
	404	*data = g_variant_builder_end(&gvb);
	405	break;
	406	default:
	407	return SR_ERR_NA;
	408	}
	409	} else {
	410	ch = cg->channels->data;
	411	switch (key) {
	412	case SR_CONF_DEVICE_OPTIONS:
	413	if (ch->type == SR_CHANNEL_LOGIC)
	414	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	415	devopts_cg_logic, ARRAY_SIZE(devopts_cg_logic),
	416	sizeof(uint32_t));
	417	else if (ch->type == SR_CHANNEL_ANALOG) {
	418	if (strcmp(cg->name, "Analog") == 0)
	419	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	420	devopts_cg_analog_group, ARRAY_SIZE(devopts_cg_analog_group),
	421	sizeof(uint32_t));
	422	else
	423	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	424	devopts_cg_analog_channel, ARRAY_SIZE(devopts_cg_analog_channel),
	425	sizeof(uint32_t));
	426	}
	427	else
	428	return SR_ERR_BUG;
	429	break;
	430	case SR_CONF_PATTERN_MODE:
	431	/* The analog group (with all 4 channels) shall not have a pattern property. */
	432	if (strcmp(cg->name, "Analog") == 0)
	433	return SR_ERR_NA;
	434
	435	if (ch->type == SR_CHANNEL_LOGIC)
	436	*data = g_variant_new_strv(logic_pattern_str,
	437	ARRAY_SIZE(logic_pattern_str));
	438	else if (ch->type == SR_CHANNEL_ANALOG)
	439	*data = g_variant_new_strv(analog_pattern_str,
	440	ARRAY_SIZE(analog_pattern_str));
	441	else
	442	return SR_ERR_BUG;
	443	break;
	444	default:
	445	return SR_ERR_NA;
	446	}
	447	}
	448
	449	return SR_OK;
	450	}
	451
	452	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	453	{
	454	struct dev_context *devc;
	455	GHashTableIter iter;
	456	void *value;
	457
	458	if (sdi->status != SR_ST_ACTIVE)
	459	return SR_ERR_DEV_CLOSED;
	460
	461	devc = sdi->priv;
	462	devc->sent_samples = 0;
	463
	464	g_hash_table_iter_init(&iter, devc->ch_ag);
	465	while (g_hash_table_iter_next(&iter, NULL, &value))
	466	demo_generate_analog_pattern(value, devc->cur_samplerate);
	467
	468	sr_session_source_add(sdi->session, -1, 0, 100,
	469	demo_prepare_data, (struct sr_dev_inst *)sdi);
	470
	471	std_session_send_df_header(sdi);
	472
	473	/* We use this timestamp to decide how many more samples to send. */
	474	devc->start_us = g_get_monotonic_time();
	475	devc->spent_us = 0;
	476
	477	return SR_OK;
	478	}
	479
	480	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	481	{
	482	sr_dbg("Stopping acquisition.");
	483	sr_session_source_remove(sdi->session, -1);
	484	std_session_send_df_end(sdi);
	485
	486	return SR_OK;
	487	}
	488
	489	static struct sr_dev_driver demo_driver_info = {
	490	.name = "demo",
	491	.longname = "Demo driver and pattern generator",
	492	.api_version = 1,
	493	.init = std_init,
	494	.cleanup = std_cleanup,
	495	.scan = scan,
	496	.dev_list = std_dev_list,
	497	.dev_clear = dev_clear,
	498	.config_get = config_get,
	499	.config_set = config_set,
	500	.config_list = config_list,
	501	.dev_open = dev_open,
	502	.dev_close = dev_close,
	503	.dev_acquisition_start = dev_acquisition_start,
	504	.dev_acquisition_stop = dev_acquisition_stop,
	505	.context = NULL,
	506	};
	507	SR_REGISTER_DEV_DRIVER(demo_driver_info);