[libsigrok.git] / hardware / rigol-ds1xx2 / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2012 Martin Ling <martin-git@earth.li>
 *
 * 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 <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"

static const int hwcaps[] = {
	SR_CONF_OSCILLOSCOPE,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_TIMEBASE,
	SR_CONF_TRIGGER_SOURCE,
	SR_CONF_TRIGGER_SLOPE,
	SR_CONF_HORIZ_TRIGGERPOS,
	SR_CONF_VDIV,
	SR_CONF_COUPLING,
	0,
};

static const struct sr_rational timebases[] = {
	/* nanoseconds */
	{ 2, 1000000000 },
	{ 5, 1000000000 },
	{ 10, 1000000000 },
	{ 20, 1000000000 },
	{ 50, 1000000000 },
	{ 100, 1000000000 },
	{ 500, 1000000000 },
	/* microseconds */
	{ 1, 1000000 },
	{ 2, 1000000 },
	{ 5, 1000000 },
	{ 10, 1000000 },
	{ 20, 1000000 },
	{ 50, 1000000 },
	{ 100, 1000000 },
	{ 200, 1000000 },
	{ 500, 1000000 },
	/* milliseconds */
	{ 1, 1000 },
	{ 2, 1000 },
	{ 5, 1000 },
	{ 10, 1000 },
	{ 20, 1000 },
	{ 50, 1000 },
	{ 100, 1000 },
	{ 200, 1000 },
	{ 500, 1000 },
	/* seconds */
	{ 1, 1 },
	{ 2, 1 },
	{ 5, 1 },
	{ 10, 1 },
	{ 20, 1 },
	{ 50, 1 },
	{ 0, 0},
};

static const struct sr_rational vdivs[] = {
	/* millivolts */
	{ 2, 1000 },
	{ 5, 1000 },
	{ 10, 1000 },
	{ 20, 1000 },
	{ 50, 1000 },
	{ 100, 1000 },
	{ 200, 1000 },
	{ 500, 1000 },
	/* volts */
	{ 1, 1 },
	{ 2, 1 },
	{ 5, 1 },
	{ 10, 1 },
	{ 0, 0 },
};

static const char *trigger_sources[] = {
	"CH1",
	"CH2",
	"EXT",
	"AC Line",
	NULL,
};

static const char *coupling[] = {
	"AC",
	"DC",
	"GND",
	NULL,
};

static const char *supported_models[] = {
	"DS1052E",
	"DS1102E",
	"DS1052D",
	"DS1102D"
};

SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info;

/* Properly close and free all devices. */
static int clear_instances(void)
{
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	GSList *l;

	if (!(drvc = di->priv))
		return SR_OK;

	for (l = drvc->instances; l; l = l->next) {
		if (!(sdi = l->data))
			continue;
		if (!(devc = sdi->priv))
			continue;

		g_free(devc->device);
		g_slist_free(devc->enabled_probes);
		close(devc->fd);

		sr_dev_inst_free(sdi);
	}

	g_slist_free(drvc->instances);
	drvc->instances = NULL;

	return SR_OK;
}

static int hw_init(struct sr_context *sr_ctx)
{
	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
}

static GSList *hw_scan(GSList *options)
{
	struct drv_context *drvc;
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct sr_probe *probe;
	GSList *devices;
	GDir *dir;
	const gchar *dev_name;
	const gchar *dev_dir = "/dev/";
	const gchar *prefix = "usbtmc";
	gchar *device;
	const gchar *idn_query = "*IDN?";
	int len, num_tokens, fd, i;
	const gchar *delimiter = ",";
	gchar **tokens;
	const char *manufacturer, *model, *version;
	int num_models;
	gboolean matched = FALSE;
	char buf[256];

	(void)options;

	drvc = di->priv;
	drvc->instances = NULL;

	devices = NULL;

	dir = g_dir_open("/sys/class/usb/", 0, NULL);

	if (dir == NULL)
		return NULL;

	while ((dev_name = g_dir_read_name(dir)) != NULL) {
		if (strncmp(dev_name, prefix, strlen(prefix))) 
			continue;

		device = g_strconcat(dev_dir, dev_name, NULL);

		fd = open(device, O_RDWR);
		len = write(fd, idn_query, strlen(idn_query));
		len = read(fd, buf, sizeof(buf));
		close(fd);
		if (len == 0) {
			g_free(device);
			return NULL;
		}

		buf[len] = 0;
		tokens = g_strsplit(buf, delimiter, 0);
		close(fd);
		sr_dbg("response: %s %d [%s]", device, len, buf);

		for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);

		if (num_tokens < 4) {
			g_strfreev(tokens);
			g_free(device);
			return NULL;
		}

		manufacturer = tokens[0];
		model = tokens[1];
		version = tokens[3];

		if (strcmp(manufacturer, "Rigol Technologies")) {
			g_strfreev(tokens);
			g_free(device);
			return NULL;
		}

		num_models = sizeof(supported_models) / sizeof(supported_models[0]);

		for (i = 0; i < num_models; i++) {
			if (!strcmp(model, supported_models[i])) {
				matched = 1;
				break;
			}
		}

		if (!matched || !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
			manufacturer, model, version))) {
			g_strfreev(tokens);
			g_free(device);
			return NULL;
		}

		g_strfreev(tokens);

		if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
			sr_err("Device context malloc failed.");
			g_free(device);
			return NULL;
		}

		devc->device = device;

		sdi->priv = devc;
		sdi->driver = di;

		for (i = 0; i < 2; i++) {
			if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE,
			    i == 0 ? "CH1" : "CH2")))
				return NULL;
			sdi->probes = g_slist_append(sdi->probes, probe);
		}

		drvc->instances = g_slist_append(drvc->instances, sdi);
		devices = g_slist_append(devices, sdi);
	}

	g_dir_close(dir);

	return devices;
}

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

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

	devc = sdi->priv;

	if ((fd = open(devc->device, O_RDWR)) == -1)
		return SR_ERR;

	devc->fd = fd;

	devc->scale = 1;

	return SR_OK;
}

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

	devc = sdi->priv;

	close(devc->fd);

	return SR_OK;
}

static int hw_cleanup(void)
{
	clear_instances();

	return SR_OK;
}

static int config_set(int id, const void *value, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	uint64_t tmp_u64;
	float tmp_float;
	struct sr_rational tmp_rat;
	int ret, i, j;
	char *channel;

	devc = sdi->priv;

	if (sdi->status != SR_ST_ACTIVE) {
		sr_err("Device inactive, can't set config options.");
		return SR_ERR;
	}

	ret = SR_OK;
	switch (id) {
	case SR_CONF_LIMIT_FRAMES:
		devc->limit_frames = *(const uint64_t *)value;
		break;
	case SR_CONF_TRIGGER_SLOPE:
		tmp_u64 = *(const int *)value;
		rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n",
				       tmp_u64 ? "POS" : "NEG");
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		tmp_float = *(const float *)value;
		rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_float);
		break;
	case SR_CONF_TIMEBASE:
		tmp_rat = *(const struct sr_rational *)value;
		rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n",
				       (float)tmp_rat.p / tmp_rat.q);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		if (!strcmp(value, "CH1"))
			channel = "CHAN1";
		else if (!strcmp(value, "CH2"))
			channel = "CHAN2";
		else if (!strcmp(value, "EXT"))
			channel = "EXT";
		else if (!strcmp(value, "AC Line"))
			channel = "ACL";
		else {
			ret = SR_ERR_ARG;
			break;
		}
		rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SOUR %s\n", channel);
		break;
	case SR_CONF_VDIV:
		/* TODO: Not supporting vdiv per channel yet. */
		tmp_rat = *(const struct sr_rational *)value;
		for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
			if (vdivs[i].p == tmp_rat.p
					&& vdivs[i].q == tmp_rat.q) {
				devc->scale = (float)tmp_rat.p / tmp_rat.q;
				for (j = 0; j < 2; j++)
					rigol_ds1xx2_send_data(devc->fd,
					 ":CHAN%d:SCAL %.3f\n", j, devc->scale);
				break;
			}
		}
		if (vdivs[i].p == 0 && vdivs[i].q == 0)
			ret = SR_ERR_ARG;
		break;
	case SR_CONF_COUPLING:
		/* TODO: Not supporting coupling per channel yet. */
		for (i = 0; coupling[i]; i++) {
			if (!strcmp(value, coupling[i])) {
				for (j = 0; j < 2; j++)
					rigol_ds1xx2_send_data(devc->fd,
					  ":CHAN%d:COUP %s\n", j, coupling[i]);
				break;
			}
		}
		if (coupling[i] == 0)
			ret = SR_ERR_ARG;
		break;
	default:
		sr_err("Unknown hardware capability: %d.", id);
		ret = SR_ERR_ARG;
		break;
	}

	return ret;
}

static int config_list(int key, const void **data, const struct sr_dev_inst *sdi)
{

	(void)sdi;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = hwcaps;
		break;
	case SR_CONF_COUPLING:
		*data = coupling;
		break;
	case SR_CONF_VDIV:
		*data = vdivs;
		break;
	case SR_CONF_TIMEBASE:
		*data = timebases;
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = trigger_sources;
		break;
	default:
		return SR_ERR_ARG;
	}

	return SR_OK;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	struct dev_context *devc;
	char buf[256];
	int len;

	(void)cb_data;

	devc = sdi->priv;

	devc->num_frames = 0;

	sr_source_add(devc->fd, G_IO_IN, 50, rigol_ds1xx2_receive_data, (void *)sdi);

	/* Send header packet to the session bus. */
	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);

	/* Hardcoded to CH1 only. */
	devc->enabled_probes = g_slist_append(NULL, sdi->probes->data);
	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL?\n");
	len = read(devc->fd, buf, sizeof(buf));
	buf[len] = 0;
	devc->scale = atof(buf);
	sr_dbg("Scale is %.3f.", devc->scale);
	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:OFFS?\n");
	len = read(devc->fd, buf, sizeof(buf));
	buf[len] = 0;
	devc->offset = atof(buf);
	sr_dbg("Offset is %.6f.", devc->offset);
	rigol_ds1xx2_send_data(devc->fd, ":WAV:DATA?\n");

	return SR_OK;
}

static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	struct dev_context *devc;

	(void)cb_data;

	devc = sdi->priv;

	if (sdi->status != SR_ST_ACTIVE) {
		sr_err("Device inactive, can't stop acquisition.");
		return SR_ERR;
	}

	sr_source_remove(devc->fd);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = {
	.name = "rigol-ds1xx2",
	.longname = "Rigol DS1xx2",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.scan = hw_scan,
	.dev_list = hw_dev_list,
	.dev_clear = clear_instances,
	.config_set = config_set,
	.config_list = config_list,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
f4816ac6 ML	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2012 Martin Ling <martin-git@earth.li>
	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
e0b7d23c ML	20	#include <fcntl.h>
	21	#include <unistd.h>
	22	#include <stdlib.h>
	23	#include <string.h>
f4816ac6 ML	24	#include <glib.h>
	25	#include "libsigrok.h"
	26	#include "libsigrok-internal.h"
	27	#include "protocol.h"
	28
e0b7d23c	29	static const int hwcaps[] = {
1953564a BV	30	SR_CONF_OSCILLOSCOPE,
	31	SR_CONF_LIMIT_SAMPLES,
	32	SR_CONF_TIMEBASE,
	33	SR_CONF_TRIGGER_SOURCE,
	34	SR_CONF_TRIGGER_SLOPE,
	35	SR_CONF_HORIZ_TRIGGERPOS,
	36	SR_CONF_VDIV,
	37	SR_CONF_COUPLING,
e0b7d23c ML	38	0,
	39	};
	40
e0b7d23c ML	41	static const struct sr_rational timebases[] = {
	42	/* nanoseconds */
	43	{ 2, 1000000000 },
	44	{ 5, 1000000000 },
	45	{ 10, 1000000000 },
	46	{ 20, 1000000000 },
	47	{ 50, 1000000000 },
	48	{ 100, 1000000000 },
	49	{ 500, 1000000000 },
	50	/* microseconds */
	51	{ 1, 1000000 },
	52	{ 2, 1000000 },
	53	{ 5, 1000000 },
	54	{ 10, 1000000 },
	55	{ 20, 1000000 },
	56	{ 50, 1000000 },
	57	{ 100, 1000000 },
	58	{ 200, 1000000 },
	59	{ 500, 1000000 },
	60	/* milliseconds */
	61	{ 1, 1000 },
	62	{ 2, 1000 },
	63	{ 5, 1000 },
	64	{ 10, 1000 },
	65	{ 20, 1000 },
	66	{ 50, 1000 },
	67	{ 100, 1000 },
	68	{ 200, 1000 },
	69	{ 500, 1000 },
	70	/* seconds */
	71	{ 1, 1 },
	72	{ 2, 1 },
	73	{ 5, 1 },
	74	{ 10, 1 },
	75	{ 20, 1 },
	76	{ 50, 1 },
	77	{ 0, 0},
	78	};
	79
	80	static const struct sr_rational vdivs[] = {
	81	/* millivolts */
	82	{ 2, 1000 },
	83	{ 5, 1000 },
	84	{ 10, 1000 },
	85	{ 20, 1000 },
	86	{ 50, 1000 },
	87	{ 100, 1000 },
	88	{ 200, 1000 },
	89	{ 500, 1000 },
	90	/* volts */
	91	{ 1, 1 },
	92	{ 2, 1 },
	93	{ 5, 1 },
	94	{ 10, 1 },
	95	{ 0, 0 },
	96	};
	97
	98	static const char *trigger_sources[] = {
	99	"CH1",
	100	"CH2",
	101	"EXT",
	102	"AC Line",
	103	NULL,
	104	};
105
106	static const char *coupling[] = {
107	"AC",
108	"DC",
109	"GND",
110	NULL,
111	};
112
512bb890 BV	113	static const char *supported_models[] = {
	114	"DS1052E",
	115	"DS1102E",
	116	"DS1052D",
	117	"DS1102D"
	118	};
	119
f4816ac6 ML	120	SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
	121	static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info;
	122
	123	/* Properly close and free all devices. */
	124	static int clear_instances(void)
	125	{
	126	struct sr_dev_inst *sdi;
	127	struct drv_context *drvc;
	128	struct dev_context *devc;
	129	GSList *l;
	130
	131	if (!(drvc = di->priv))
	132	return SR_OK;
	133
	134	for (l = drvc->instances; l; l = l->next) {
	135	if (!(sdi = l->data))
	136	continue;
	137	if (!(devc = sdi->priv))
	138	continue;
	139
fb6e5ba8	140	g_free(devc->device);
69e19dd7	141	g_slist_free(devc->enabled_probes);
e0b7d23c	142	close(devc->fd);
f4816ac6 ML	143
	144	sr_dev_inst_free(sdi);
	145	}
	146
	147	g_slist_free(drvc->instances);
	148	drvc->instances = NULL;
	149
	150	return SR_OK;
	151	}
	152
e0b7d23c	153	static int hw_init(struct sr_context *sr_ctx)
f4816ac6	154	{
063e7aef	155	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
f4816ac6 ML	156	}
	157
	158	static GSList hw_scan(GSList options)
	159	{
	160	struct drv_context *drvc;
e0b7d23c ML	161	struct sr_dev_inst *sdi;
	162	struct dev_context *devc;
	163	struct sr_probe *probe;
f4816ac6	164	GSList *devices;
fb6e5ba8 ML	165	GDir *dir;
	166	const gchar *dev_name;
	167	const gchar *dev_dir = "/dev/";
	168	const gchar *prefix = "usbtmc";
	169	gchar *device;
	170	const gchar idn_query = "IDN?";
29d957ce	171	int len, num_tokens, fd, i;
fb6e5ba8 ML	172	const gchar *delimiter = ",";
fb6e5ba8 ML	173	gchar **tokens;
512bb890 BV	174	const char manufacturer, model, *version;
	175	int num_models;
	176	gboolean matched = FALSE;
fb6e5ba8 ML	177	char buf[256];
fb6e5ba8 ML	178
f4816ac6 ML	179	(void)options;
f4816ac6 ML	180
f4816ac6 ML	181	drvc = di->priv;
	182	drvc->instances = NULL;
	183
4b97c74e UH	184	devices = NULL;
4b97c74e UH	185
fb6e5ba8	186	dir = g_dir_open("/sys/class/usb/", 0, NULL);
e0b7d23c	187
fb6e5ba8 ML	188	if (dir == NULL)
fb6e5ba8 ML	189	return NULL;
e0b7d23c	190
29d957ce	191	while ((dev_name = g_dir_read_name(dir)) != NULL) {
fb6e5ba8 ML	192	if (strncmp(dev_name, prefix, strlen(prefix)))
	193	continue;
	194
	195	device = g_strconcat(dev_dir, dev_name, NULL);
	196
	197	fd = open(device, O_RDWR);
	198	len = write(fd, idn_query, strlen(idn_query));
	199	len = read(fd, buf, sizeof(buf));
	200	close(fd);
29d957ce	201	if (len == 0) {
fb6e5ba8 ML	202	g_free(device);
	203	return NULL;
	204	}
	205
	206	buf[len] = 0;
	207	tokens = g_strsplit(buf, delimiter, 0);
	208	close(fd);
512bb890	209	sr_dbg("response: %s %d [%s]", device, len, buf);
fb6e5ba8 ML	210
	211	for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
	212
512bb890	213	if (num_tokens < 4) {
fb6e5ba8 ML	214	g_strfreev(tokens);
fb6e5ba8 ML	215	g_free(device);
e0b7d23c	216	return NULL;
fb6e5ba8	217	}
512bb890 BV	218
	219	manufacturer = tokens[0];
	220	model = tokens[1];
	221	version = tokens[3];
	222
	223	if (strcmp(manufacturer, "Rigol Technologies")) {
	224	g_strfreev(tokens);
	225	g_free(device);
	226	return NULL;
	227	}
	228
	229	num_models = sizeof(supported_models) / sizeof(supported_models[0]);
	230
	231	for (i = 0; i < num_models; i++) {
	232	if (!strcmp(model, supported_models[i])) {
	233	matched = 1;
	234	break;
	235	}
	236	}
	237
	238	if (!matched \|\| !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
	239	manufacturer, model, version))) {
	240	g_strfreev(tokens);
	241	g_free(device);
	242	return NULL;
	243	}
	244
fb6e5ba8 ML	245	g_strfreev(tokens);
fb6e5ba8 ML	246
29d957ce UH	247	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
29d957ce UH	248	sr_err("Device context malloc failed.");
fb6e5ba8 ML	249	g_free(device);
	250	return NULL;
	251	}
	252
	253	devc->device = device;
	254
	255	sdi->priv = devc;
	256	sdi->driver = di;
	257
29d957ce UH	258	for (i = 0; i < 2; i++) {
	259	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE,
	260	i == 0 ? "CH1" : "CH2")))
fb6e5ba8 ML	261	return NULL;
	262	sdi->probes = g_slist_append(sdi->probes, probe);
	263	}
	264
	265	drvc->instances = g_slist_append(drvc->instances, sdi);
	266	devices = g_slist_append(devices, sdi);
e0b7d23c	267	}
fb6e5ba8 ML	268
fb6e5ba8 ML	269	g_dir_close(dir);
f4816ac6 ML	270
	271	return devices;
	272	}
	273
	274	static GSList *hw_dev_list(void)
	275	{
0e94d524	276	return ((struct drv_context *)(di->priv))->instances;
f4816ac6 ML	277	}
	278
	279	static int hw_dev_open(struct sr_dev_inst *sdi)
	280	{
29d957ce UH	281	struct dev_context *devc;
29d957ce UH	282	int fd;
fb6e5ba8	283
29d957ce	284	devc = sdi->priv;
e0b7d23c	285
29d957ce	286	if ((fd = open(devc->device, O_RDWR)) == -1)
e0b7d23c ML	287	return SR_ERR;
e0b7d23c ML	288
e0b7d23c ML	289	devc->fd = fd;
	290
	291	devc->scale = 1;
f4816ac6 ML	292
	293	return SR_OK;
	294	}
	295
	296	static int hw_dev_close(struct sr_dev_inst *sdi)
	297	{
29d957ce UH	298	struct dev_context *devc;
	299
	300	devc = sdi->priv;
e0b7d23c ML	301
e0b7d23c ML	302	close(devc->fd);
f4816ac6 ML	303
	304	return SR_OK;
	305	}
	306
	307	static int hw_cleanup(void)
	308	{
	309	clear_instances();
	310
f4816ac6 ML	311	return SR_OK;
	312	}
	313
035a1078	314	static int config_set(int id, const void value, const struct sr_dev_inst sdi)
f4816ac6	315	{
29d957ce	316	struct dev_context *devc;
e0b7d23c ML	317	uint64_t tmp_u64;
	318	float tmp_float;
	319	struct sr_rational tmp_rat;
	320	int ret, i, j;
	321	char *channel;
f4816ac6	322
29d957ce UH	323	devc = sdi->priv;
29d957ce UH	324
f4816ac6 ML	325	if (sdi->status != SR_ST_ACTIVE) {
	326	sr_err("Device inactive, can't set config options.");
	327	return SR_ERR;
	328	}
	329
	330	ret = SR_OK;
035a1078	331	switch (id) {
1953564a	332	case SR_CONF_LIMIT_FRAMES:
e0b7d23c ML	333	devc->limit_frames = (const uint64_t )value;
e0b7d23c ML	334	break;
1953564a	335	case SR_CONF_TRIGGER_SLOPE:
e0b7d23c	336	tmp_u64 = (const int )value;
29d957ce UH	337	rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n",
29d957ce UH	338	tmp_u64 ? "POS" : "NEG");
e0b7d23c	339	break;
1953564a	340	case SR_CONF_HORIZ_TRIGGERPOS:
e0b7d23c	341	tmp_float = (const float )value;
542843f7	342	rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_float);
e0b7d23c	343	break;
1953564a	344	case SR_CONF_TIMEBASE:
e0b7d23c	345	tmp_rat = (const struct sr_rational )value;
29d957ce UH	346	rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n",
29d957ce UH	347	(float)tmp_rat.p / tmp_rat.q);
e0b7d23c	348	break;
1953564a	349	case SR_CONF_TRIGGER_SOURCE:
e0b7d23c ML	350	if (!strcmp(value, "CH1"))
	351	channel = "CHAN1";
	352	else if (!strcmp(value, "CH2"))
	353	channel = "CHAN2";
	354	else if (!strcmp(value, "EXT"))
	355	channel = "EXT";
	356	else if (!strcmp(value, "AC Line"))
	357	channel = "ACL";
29d957ce	358	else {
e0b7d23c ML	359	ret = SR_ERR_ARG;
e0b7d23c ML	360	break;
4e108ace ML	361	}
4e108ace ML	362	rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SOUR %s\n", channel);
e0b7d23c	363	break;
1953564a	364	case SR_CONF_VDIV:
e0b7d23c ML	365	/* TODO: Not supporting vdiv per channel yet. */
	366	tmp_rat = (const struct sr_rational )value;
	367	for (i = 0; vdivs[i].p && vdivs[i].q; i++) {
	368	if (vdivs[i].p == tmp_rat.p
	369	&& vdivs[i].q == tmp_rat.q) {
29d957ce	370	devc->scale = (float)tmp_rat.p / tmp_rat.q;
e0b7d23c	371	for (j = 0; j < 2; j++)
29d957ce UH	372	rigol_ds1xx2_send_data(devc->fd,
29d957ce UH	373	":CHAN%d:SCAL %.3f\n", j, devc->scale);
e0b7d23c ML	374	break;
	375	}
	376	}
	377	if (vdivs[i].p == 0 && vdivs[i].q == 0)
	378	ret = SR_ERR_ARG;
	379	break;
1953564a	380	case SR_CONF_COUPLING:
e0b7d23c ML	381	/* TODO: Not supporting coupling per channel yet. */
	382	for (i = 0; coupling[i]; i++) {
	383	if (!strcmp(value, coupling[i])) {
	384	for (j = 0; j < 2; j++)
29d957ce UH	385	rigol_ds1xx2_send_data(devc->fd,
29d957ce UH	386	":CHAN%d:COUP %s\n", j, coupling[i]);
e0b7d23c ML	387	break;
	388	}
	389	}
	390	if (coupling[i] == 0)
	391	ret = SR_ERR_ARG;
	392	break;
f4816ac6	393	default:
035a1078	394	sr_err("Unknown hardware capability: %d.", id);
f4816ac6	395	ret = SR_ERR_ARG;
29d957ce	396	break;
f4816ac6 ML	397	}
	398
	399	return ret;
	400	}
	401
a1c743fc BV	402	static int config_list(int key, const void *data, const struct sr_dev_inst sdi)
	403	{
	404
	405	(void)sdi;
	406
	407	switch (key) {
9a6517d1 BV	408	case SR_CONF_DEVICE_OPTIONS:
	409	*data = hwcaps;
	410	break;
2a7b113d BV	411	case SR_CONF_COUPLING:
	412	*data = coupling;
	413	break;
e4f2b2ad BV	414	case SR_CONF_VDIV:
	415	*data = vdivs;
	416	break;
41f5bd09 BV	417	case SR_CONF_TIMEBASE:
	418	*data = timebases;
	419	break;
328bafab BV	420	case SR_CONF_TRIGGER_SOURCE:
	421	*data = trigger_sources;
	422	break;
a1c743fc BV	423	default:
	424	return SR_ERR_ARG;
	425	}
	426
	427	return SR_OK;
	428	}
	429
f4816ac6 ML	430	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	431	void *cb_data)
	432	{
29d957ce	433	struct dev_context *devc;
e0b7d23c ML	434	char buf[256];
e0b7d23c ML	435	int len;
29d957ce	436
e0b7d23c ML	437	(void)cb_data;
e0b7d23c ML	438
29d957ce UH	439	devc = sdi->priv;
29d957ce UH	440
e0b7d23c ML	441	devc->num_frames = 0;
	442
	443	sr_source_add(devc->fd, G_IO_IN, 50, rigol_ds1xx2_receive_data, (void *)sdi);
	444
	445	/* Send header packet to the session bus. */
4afdfd46	446	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
e0b7d23c	447
69e19dd7 BV	448	/* Hardcoded to CH1 only. */
69e19dd7 BV	449	devc->enabled_probes = g_slist_append(NULL, sdi->probes->data);
e0b7d23c ML	450	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL?\n");
	451	len = read(devc->fd, buf, sizeof(buf));
	452	buf[len] = 0;
	453	devc->scale = atof(buf);
29d957ce	454	sr_dbg("Scale is %.3f.", devc->scale);
e0b7d23c ML	455	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:OFFS?\n");
	456	len = read(devc->fd, buf, sizeof(buf));
	457	buf[len] = 0;
	458	devc->offset = atof(buf);
29d957ce	459	sr_dbg("Offset is %.6f.", devc->offset);
e0b7d23c	460	rigol_ds1xx2_send_data(devc->fd, ":WAV:DATA?\n");
f4816ac6 ML	461
	462	return SR_OK;
	463	}
	464
	465	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	466	{
29d957ce UH	467	struct dev_context *devc;
29d957ce UH	468
f4816ac6 ML	469	(void)cb_data;
f4816ac6 ML	470
29d957ce UH	471	devc = sdi->priv;
29d957ce UH	472
f4816ac6 ML	473	if (sdi->status != SR_ST_ACTIVE) {
	474	sr_err("Device inactive, can't stop acquisition.");
	475	return SR_ERR;
	476	}
	477
e0b7d23c	478	sr_source_remove(devc->fd);
f4816ac6 ML	479
	480	return SR_OK;
	481	}
	482
	483	SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = {
	484	.name = "rigol-ds1xx2",
	485	.longname = "Rigol DS1xx2",
	486	.api_version = 1,
	487	.init = hw_init,
	488	.cleanup = hw_cleanup,
	489	.scan = hw_scan,
	490	.dev_list = hw_dev_list,
	491	.dev_clear = clear_instances,
035a1078	492	.config_set = config_set,
a1c743fc	493	.config_list = config_list,
f4816ac6 ML	494	.dev_open = hw_dev_open,
f4816ac6 ML	495	.dev_close = hw_dev_close,
f4816ac6 ML	496	.dev_acquisition_start = hw_dev_acquisition_start,
	497	.dev_acquisition_stop = hw_dev_acquisition_stop,
	498	.priv = NULL,
	499	};