[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 int32_t 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,
};

static const uint64_t timebases[][2] = {
	/* 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 },
};

static const uint64_t vdivs[][2] = {
	/* 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 },
};

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

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

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?";
	unsigned int i;
	int len, num_tokens, fd;
	const gchar *delimiter = ",";
	gchar **tokens;
	const char *manufacturer, *model, *version;
	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;
		}

		for (i = 0; i < ARRAY_SIZE(supported_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, GVariant *data, const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	uint64_t tmp_u64, p, q;
	double tmp_double;
	unsigned int i;
	int tmp_int, ret;
	const char *tmp_str, *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 = g_variant_get_uint64(data);
		break;
	case SR_CONF_TRIGGER_SLOPE:
		tmp_u64 = g_variant_get_uint64(data);
		rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n",
				       tmp_u64 ? "POS" : "NEG");
		break;
	case SR_CONF_HORIZ_TRIGGERPOS:
		tmp_double = g_variant_get_double(data);
		rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_double);
		break;
	case SR_CONF_TIMEBASE:
		g_variant_get(data, "(tt)", &p, &q);
		tmp_int = -1;
		for (i = 0; i < ARRAY_SIZE(timebases); i++) {
			if (timebases[i][0] == p && timebases[i][1] == q) {
				tmp_int = i;
				break;
			}
		}
		if (tmp_int >= 0)
			rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n",
					(float)timebases[i][0] / timebases[i][1]);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		tmp_str = g_variant_get_string(data, NULL);
		if (!strcmp(tmp_str, "CH1"))
			channel = "CHAN1";
		else if (!strcmp(tmp_str, "CH2"))
			channel = "CHAN2";
		else if (!strcmp(tmp_str, "EXT"))
			channel = "EXT";
		else if (!strcmp(tmp_str, "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:
		g_variant_get(data, "(tt)", &p, &q);
		tmp_int = -1;
		for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
			if (vdivs[i][0] != p || vdivs[i][1] != q)
				continue;
			devc->scale = (float)vdivs[i][0] / vdivs[i][1];
			rigol_ds1xx2_send_data(devc->fd, ":CHAN0:SCAL %.3f\n",
					devc->scale);
			rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL %.3f\n",
					devc->scale);
			break;
		}
		if (i == ARRAY_SIZE(vdivs))
			ret = SR_ERR_ARG;
		break;
	case SR_CONF_COUPLING:
		/* TODO: Not supporting coupling per channel yet. */
		tmp_str = g_variant_get_string(data, NULL);
		for (i = 0; i < ARRAY_SIZE(coupling); i++) {
			if (!strcmp(tmp_str, coupling[i])) {
				rigol_ds1xx2_send_data(devc->fd, ":CHAN0:COUP %s\n",
						coupling[i]);
				rigol_ds1xx2_send_data(devc->fd, ":CHAN1:COUP %s\n",
						coupling[i]);
				break;
			}
		}
		if (i == ARRAY_SIZE(coupling))
			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, GVariant **data, const struct sr_dev_inst *sdi)
{
	GVariant *tuple, *rational[2];
	GVariantBuilder gvb;
	unsigned int i;

	(void)sdi;

	switch (key) {
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
		break;
	case SR_CONF_COUPLING:
		*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
		break;
	case SR_CONF_VDIV:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
			rational[0] = g_variant_new_uint64(vdivs[i][0]);
			rational[1] = g_variant_new_uint64(vdivs[i][1]);
			tuple = g_variant_new_tuple(rational, 2);
			g_variant_builder_add_value(&gvb, tuple);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TIMEBASE:
		g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
		for (i = 0; i < ARRAY_SIZE(timebases); i++) {
			rational[0] = g_variant_new_uint64(timebases[i][0]);
			rational[1] = g_variant_new_uint64(timebases[i][1]);
			tuple = g_variant_new_tuple(rational, 2);
			g_variant_builder_add_value(&gvb, tuple);
		}
		*data = g_variant_builder_end(&gvb);
		break;
	case SR_CONF_TRIGGER_SOURCE:
		*data = g_variant_new_strv(trigger_sources,
				ARRAY_SIZE(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_get = NULL,
	.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
f6a0ac9f	29	static const int32_t 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	};
e0b7d23c ML	39
f6a0ac9f	40	static const uint64_t timebases[][2] = {
e0b7d23c ML	41	/* nanoseconds */
	42	{ 2, 1000000000 },
	43	{ 5, 1000000000 },
	44	{ 10, 1000000000 },
	45	{ 20, 1000000000 },
	46	{ 50, 1000000000 },
	47	{ 100, 1000000000 },
	48	{ 500, 1000000000 },
	49	/* microseconds */
	50	{ 1, 1000000 },
	51	{ 2, 1000000 },
	52	{ 5, 1000000 },
	53	{ 10, 1000000 },
	54	{ 20, 1000000 },
	55	{ 50, 1000000 },
	56	{ 100, 1000000 },
	57	{ 200, 1000000 },
	58	{ 500, 1000000 },
	59	/* milliseconds */
	60	{ 1, 1000 },
	61	{ 2, 1000 },
	62	{ 5, 1000 },
	63	{ 10, 1000 },
	64	{ 20, 1000 },
	65	{ 50, 1000 },
	66	{ 100, 1000 },
	67	{ 200, 1000 },
	68	{ 500, 1000 },
	69	/* seconds */
	70	{ 1, 1 },
	71	{ 2, 1 },
	72	{ 5, 1 },
	73	{ 10, 1 },
	74	{ 20, 1 },
	75	{ 50, 1 },
e0b7d23c ML	76	};
e0b7d23c ML	77
f6a0ac9f	78	static const uint64_t vdivs[][2] = {
e0b7d23c ML	79	/* millivolts */
	80	{ 2, 1000 },
	81	{ 5, 1000 },
	82	{ 10, 1000 },
	83	{ 20, 1000 },
	84	{ 50, 1000 },
	85	{ 100, 1000 },
	86	{ 200, 1000 },
	87	{ 500, 1000 },
	88	/* volts */
	89	{ 1, 1 },
	90	{ 2, 1 },
	91	{ 5, 1 },
	92	{ 10, 1 },
e0b7d23c ML	93	};
	94
	95	static const char *trigger_sources[] = {
	96	"CH1",
	97	"CH2",
	98	"EXT",
	99	"AC Line",
e0b7d23c ML	100	};
	101
	102	static const char *coupling[] = {
	103	"AC",
	104	"DC",
	105	"GND",
e0b7d23c ML	106	};
e0b7d23c ML	107
512bb890 BV	108	static const char *supported_models[] = {
	109	"DS1052E",
	110	"DS1102E",
	111	"DS1052D",
333bf022	112	"DS1102D",
512bb890 BV	113	};
512bb890 BV	114
f4816ac6 ML	115	SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info;
	116	static struct sr_dev_driver *di = &rigol_ds1xx2_driver_info;
	117
	118	/* Properly close and free all devices. */
	119	static int clear_instances(void)
	120	{
	121	struct sr_dev_inst *sdi;
	122	struct drv_context *drvc;
	123	struct dev_context *devc;
	124	GSList *l;
	125
	126	if (!(drvc = di->priv))
	127	return SR_OK;
	128
	129	for (l = drvc->instances; l; l = l->next) {
	130	if (!(sdi = l->data))
	131	continue;
	132	if (!(devc = sdi->priv))
	133	continue;
	134
fb6e5ba8	135	g_free(devc->device);
69e19dd7	136	g_slist_free(devc->enabled_probes);
e0b7d23c	137	close(devc->fd);
f4816ac6 ML	138
	139	sr_dev_inst_free(sdi);
	140	}
	141
	142	g_slist_free(drvc->instances);
	143	drvc->instances = NULL;
	144
	145	return SR_OK;
	146	}
	147
e0b7d23c	148	static int hw_init(struct sr_context *sr_ctx)
f4816ac6	149	{
063e7aef	150	return std_hw_init(sr_ctx, di, DRIVER_LOG_DOMAIN);
f4816ac6 ML	151	}
	152
	153	static GSList hw_scan(GSList options)
	154	{
	155	struct drv_context *drvc;
e0b7d23c ML	156	struct sr_dev_inst *sdi;
	157	struct dev_context *devc;
	158	struct sr_probe *probe;
f4816ac6	159	GSList *devices;
fb6e5ba8 ML	160	GDir *dir;
	161	const gchar *dev_name;
	162	const gchar *dev_dir = "/dev/";
	163	const gchar *prefix = "usbtmc";
	164	gchar *device;
	165	const gchar idn_query = "IDN?";
f6a0ac9f BV	166	unsigned int i;
f6a0ac9f BV	167	int len, num_tokens, fd;
fb6e5ba8 ML	168	const gchar *delimiter = ",";
fb6e5ba8 ML	169	gchar **tokens;
512bb890	170	const char manufacturer, model, *version;
512bb890	171	gboolean matched = FALSE;
fb6e5ba8 ML	172	char buf[256];
fb6e5ba8 ML	173
f4816ac6 ML	174	(void)options;
f4816ac6 ML	175
f4816ac6 ML	176	drvc = di->priv;
	177	drvc->instances = NULL;
	178
4b97c74e UH	179	devices = NULL;
4b97c74e UH	180
fb6e5ba8	181	dir = g_dir_open("/sys/class/usb/", 0, NULL);
e0b7d23c	182
fb6e5ba8 ML	183	if (dir == NULL)
fb6e5ba8 ML	184	return NULL;
e0b7d23c	185
29d957ce	186	while ((dev_name = g_dir_read_name(dir)) != NULL) {
fb6e5ba8 ML	187	if (strncmp(dev_name, prefix, strlen(prefix)))
	188	continue;
	189
	190	device = g_strconcat(dev_dir, dev_name, NULL);
	191
	192	fd = open(device, O_RDWR);
	193	len = write(fd, idn_query, strlen(idn_query));
	194	len = read(fd, buf, sizeof(buf));
	195	close(fd);
29d957ce	196	if (len == 0) {
fb6e5ba8 ML	197	g_free(device);
	198	return NULL;
	199	}
	200
	201	buf[len] = 0;
	202	tokens = g_strsplit(buf, delimiter, 0);
	203	close(fd);
512bb890	204	sr_dbg("response: %s %d [%s]", device, len, buf);
fb6e5ba8 ML	205
	206	for (num_tokens = 0; tokens[num_tokens] != NULL; num_tokens++);
	207
512bb890	208	if (num_tokens < 4) {
fb6e5ba8 ML	209	g_strfreev(tokens);
fb6e5ba8 ML	210	g_free(device);
e0b7d23c	211	return NULL;
fb6e5ba8	212	}
512bb890 BV	213
	214	manufacturer = tokens[0];
	215	model = tokens[1];
	216	version = tokens[3];
	217
	218	if (strcmp(manufacturer, "Rigol Technologies")) {
	219	g_strfreev(tokens);
	220	g_free(device);
	221	return NULL;
	222	}
	223
333bf022	224	for (i = 0; i < ARRAY_SIZE(supported_models); i++) {
512bb890 BV	225	if (!strcmp(model, supported_models[i])) {
	226	matched = 1;
	227	break;
	228	}
	229	}
	230
	231	if (!matched \|\| !(sdi = sr_dev_inst_new(0, SR_ST_ACTIVE,
	232	manufacturer, model, version))) {
	233	g_strfreev(tokens);
	234	g_free(device);
	235	return NULL;
	236	}
	237
fb6e5ba8 ML	238	g_strfreev(tokens);
fb6e5ba8 ML	239
29d957ce UH	240	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
29d957ce UH	241	sr_err("Device context malloc failed.");
fb6e5ba8 ML	242	g_free(device);
	243	return NULL;
	244	}
	245
	246	devc->device = device;
	247
	248	sdi->priv = devc;
	249	sdi->driver = di;
	250
29d957ce UH	251	for (i = 0; i < 2; i++) {
	252	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE,
	253	i == 0 ? "CH1" : "CH2")))
fb6e5ba8 ML	254	return NULL;
	255	sdi->probes = g_slist_append(sdi->probes, probe);
	256	}
	257
	258	drvc->instances = g_slist_append(drvc->instances, sdi);
	259	devices = g_slist_append(devices, sdi);
e0b7d23c	260	}
fb6e5ba8 ML	261
fb6e5ba8 ML	262	g_dir_close(dir);
f4816ac6 ML	263
	264	return devices;
	265	}
	266
	267	static GSList *hw_dev_list(void)
	268	{
0e94d524	269	return ((struct drv_context *)(di->priv))->instances;
f4816ac6 ML	270	}
	271
	272	static int hw_dev_open(struct sr_dev_inst *sdi)
	273	{
29d957ce UH	274	struct dev_context *devc;
29d957ce UH	275	int fd;
fb6e5ba8	276
29d957ce	277	devc = sdi->priv;
e0b7d23c	278
29d957ce	279	if ((fd = open(devc->device, O_RDWR)) == -1)
e0b7d23c ML	280	return SR_ERR;
e0b7d23c ML	281
e0b7d23c ML	282	devc->fd = fd;
	283
	284	devc->scale = 1;
f4816ac6 ML	285
	286	return SR_OK;
	287	}
	288
	289	static int hw_dev_close(struct sr_dev_inst *sdi)
	290	{
29d957ce UH	291	struct dev_context *devc;
	292
	293	devc = sdi->priv;
e0b7d23c ML	294
e0b7d23c ML	295	close(devc->fd);
f4816ac6 ML	296
	297	return SR_OK;
	298	}
	299
	300	static int hw_cleanup(void)
	301	{
	302	clear_instances();
	303
f4816ac6 ML	304	return SR_OK;
	305	}
	306
f6a0ac9f	307	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi)
f4816ac6	308	{
29d957ce	309	struct dev_context *devc;
f6a0ac9f BV	310	uint64_t tmp_u64, p, q;
	311	double tmp_double;
	312	unsigned int i;
	313	int tmp_int, ret;
	314	const char tmp_str, channel;
f4816ac6	315
29d957ce UH	316	devc = sdi->priv;
29d957ce UH	317
f4816ac6 ML	318	if (sdi->status != SR_ST_ACTIVE) {
	319	sr_err("Device inactive, can't set config options.");
	320	return SR_ERR;
	321	}
	322
	323	ret = SR_OK;
035a1078	324	switch (id) {
1953564a	325	case SR_CONF_LIMIT_FRAMES:
f6a0ac9f	326	devc->limit_frames = g_variant_get_uint64(data);
e0b7d23c	327	break;
1953564a	328	case SR_CONF_TRIGGER_SLOPE:
f6a0ac9f	329	tmp_u64 = g_variant_get_uint64(data);
29d957ce UH	330	rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SLOP %s\n",
29d957ce UH	331	tmp_u64 ? "POS" : "NEG");
e0b7d23c	332	break;
1953564a	333	case SR_CONF_HORIZ_TRIGGERPOS:
f6a0ac9f BV	334	tmp_double = g_variant_get_double(data);
f6a0ac9f BV	335	rigol_ds1xx2_send_data(devc->fd, ":TIM:OFFS %.9f\n", tmp_double);
e0b7d23c	336	break;
1953564a	337	case SR_CONF_TIMEBASE:
f6a0ac9f BV	338	g_variant_get(data, "(tt)", &p, &q);
	339	tmp_int = -1;
	340	for (i = 0; i < ARRAY_SIZE(timebases); i++) {
	341	if (timebases[i][0] == p && timebases[i][1] == q) {
	342	tmp_int = i;
	343	break;
	344	}
	345	}
	346	if (tmp_int >= 0)
	347	rigol_ds1xx2_send_data(devc->fd, ":TIM:SCAL %.9f\n",
	348	(float)timebases[i][0] / timebases[i][1]);
e0b7d23c	349	break;
1953564a	350	case SR_CONF_TRIGGER_SOURCE:
f6a0ac9f BV	351	tmp_str = g_variant_get_string(data, NULL);
f6a0ac9f BV	352	if (!strcmp(tmp_str, "CH1"))
e0b7d23c	353	channel = "CHAN1";
f6a0ac9f	354	else if (!strcmp(tmp_str, "CH2"))
e0b7d23c	355	channel = "CHAN2";
f6a0ac9f	356	else if (!strcmp(tmp_str, "EXT"))
e0b7d23c	357	channel = "EXT";
f6a0ac9f	358	else if (!strcmp(tmp_str, "AC Line"))
e0b7d23c	359	channel = "ACL";
29d957ce	360	else {
e0b7d23c ML	361	ret = SR_ERR_ARG;
e0b7d23c ML	362	break;
4e108ace ML	363	}
4e108ace ML	364	rigol_ds1xx2_send_data(devc->fd, ":TRIG:EDGE:SOUR %s\n", channel);
e0b7d23c	365	break;
1953564a	366	case SR_CONF_VDIV:
f6a0ac9f BV	367	g_variant_get(data, "(tt)", &p, &q);
	368	tmp_int = -1;
	369	for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
	370	if (vdivs[i][0] != p \|\| vdivs[i][1] != q)
	371	continue;
	372	devc->scale = (float)vdivs[i][0] / vdivs[i][1];
	373	rigol_ds1xx2_send_data(devc->fd, ":CHAN0:SCAL %.3f\n",
	374	devc->scale);
	375	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL %.3f\n",
	376	devc->scale);
	377	break;
e0b7d23c	378	}
f6a0ac9f	379	if (i == ARRAY_SIZE(vdivs))
e0b7d23c ML	380	ret = SR_ERR_ARG;
e0b7d23c ML	381	break;
1953564a	382	case SR_CONF_COUPLING:
e0b7d23c	383	/* TODO: Not supporting coupling per channel yet. */
f6a0ac9f BV	384	tmp_str = g_variant_get_string(data, NULL);
	385	for (i = 0; i < ARRAY_SIZE(coupling); i++) {
	386	if (!strcmp(tmp_str, coupling[i])) {
	387	rigol_ds1xx2_send_data(devc->fd, ":CHAN0:COUP %s\n",
	388	coupling[i]);
	389	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:COUP %s\n",
	390	coupling[i]);
e0b7d23c ML	391	break;
	392	}
	393	}
f6a0ac9f	394	if (i == ARRAY_SIZE(coupling))
e0b7d23c ML	395	ret = SR_ERR_ARG;
e0b7d23c ML	396	break;
f4816ac6	397	default:
035a1078	398	sr_err("Unknown hardware capability: %d.", id);
f4816ac6	399	ret = SR_ERR_ARG;
29d957ce	400	break;
f4816ac6 ML	401	}
	402
	403	return ret;
	404	}
	405
f6a0ac9f	406	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
a1c743fc	407	{
861c447b BV	408	GVariant tuple, rational[2];
	409	GVariantBuilder gvb;
	410	unsigned int i;
a1c743fc BV	411
	412	(void)sdi;
	413
	414	switch (key) {
9a6517d1	415	case SR_CONF_DEVICE_OPTIONS:
f6a0ac9f BV	416	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
f6a0ac9f BV	417	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
9a6517d1	418	break;
2a7b113d	419	case SR_CONF_COUPLING:
f6a0ac9f	420	*data = g_variant_new_strv(coupling, ARRAY_SIZE(coupling));
2a7b113d	421	break;
e4f2b2ad	422	case SR_CONF_VDIV:
861c447b BV	423	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	424	for (i = 0; i < ARRAY_SIZE(vdivs); i++) {
	425	rational[0] = g_variant_new_uint64(vdivs[i][0]);
	426	rational[1] = g_variant_new_uint64(vdivs[i][1]);
	427	tuple = g_variant_new_tuple(rational, 2);
	428	g_variant_builder_add_value(&gvb, tuple);
	429	}
	430	*data = g_variant_builder_end(&gvb);
e4f2b2ad	431	break;
41f5bd09	432	case SR_CONF_TIMEBASE:
861c447b BV	433	g_variant_builder_init(&gvb, G_VARIANT_TYPE_ARRAY);
	434	for (i = 0; i < ARRAY_SIZE(timebases); i++) {
	435	rational[0] = g_variant_new_uint64(timebases[i][0]);
	436	rational[1] = g_variant_new_uint64(timebases[i][1]);
	437	tuple = g_variant_new_tuple(rational, 2);
	438	g_variant_builder_add_value(&gvb, tuple);
	439	}
	440	*data = g_variant_builder_end(&gvb);
41f5bd09	441	break;
328bafab	442	case SR_CONF_TRIGGER_SOURCE:
f6a0ac9f BV	443	*data = g_variant_new_strv(trigger_sources,
f6a0ac9f BV	444	ARRAY_SIZE(trigger_sources));
328bafab	445	break;
a1c743fc BV	446	default:
	447	return SR_ERR_ARG;
	448	}
	449
	450	return SR_OK;
	451	}
	452
f4816ac6 ML	453	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	454	void *cb_data)
	455	{
29d957ce	456	struct dev_context *devc;
e0b7d23c ML	457	char buf[256];
e0b7d23c ML	458	int len;
29d957ce	459
e0b7d23c ML	460	(void)cb_data;
e0b7d23c ML	461
29d957ce UH	462	devc = sdi->priv;
29d957ce UH	463
e0b7d23c ML	464	devc->num_frames = 0;
	465
	466	sr_source_add(devc->fd, G_IO_IN, 50, rigol_ds1xx2_receive_data, (void *)sdi);
	467
	468	/* Send header packet to the session bus. */
4afdfd46	469	std_session_send_df_header(cb_data, DRIVER_LOG_DOMAIN);
e0b7d23c	470
69e19dd7 BV	471	/* Hardcoded to CH1 only. */
69e19dd7 BV	472	devc->enabled_probes = g_slist_append(NULL, sdi->probes->data);
e0b7d23c ML	473	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:SCAL?\n");
	474	len = read(devc->fd, buf, sizeof(buf));
	475	buf[len] = 0;
	476	devc->scale = atof(buf);
29d957ce	477	sr_dbg("Scale is %.3f.", devc->scale);
e0b7d23c ML	478	rigol_ds1xx2_send_data(devc->fd, ":CHAN1:OFFS?\n");
	479	len = read(devc->fd, buf, sizeof(buf));
	480	buf[len] = 0;
	481	devc->offset = atof(buf);
29d957ce	482	sr_dbg("Offset is %.6f.", devc->offset);
e0b7d23c	483	rigol_ds1xx2_send_data(devc->fd, ":WAV:DATA?\n");
f4816ac6 ML	484
	485	return SR_OK;
	486	}
	487
	488	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	489	{
29d957ce UH	490	struct dev_context *devc;
29d957ce UH	491
f4816ac6 ML	492	(void)cb_data;
f4816ac6 ML	493
29d957ce UH	494	devc = sdi->priv;
29d957ce UH	495
f4816ac6 ML	496	if (sdi->status != SR_ST_ACTIVE) {
	497	sr_err("Device inactive, can't stop acquisition.");
	498	return SR_ERR;
	499	}
	500
e0b7d23c	501	sr_source_remove(devc->fd);
f4816ac6 ML	502
	503	return SR_OK;
	504	}
	505
	506	SR_PRIV struct sr_dev_driver rigol_ds1xx2_driver_info = {
	507	.name = "rigol-ds1xx2",
	508	.longname = "Rigol DS1xx2",
	509	.api_version = 1,
	510	.init = hw_init,
	511	.cleanup = hw_cleanup,
	512	.scan = hw_scan,
	513	.dev_list = hw_dev_list,
	514	.dev_clear = clear_instances,
6fab7b8f	515	.config_get = NULL,
035a1078	516	.config_set = config_set,
a1c743fc	517	.config_list = config_list,
f4816ac6 ML	518	.dev_open = hw_dev_open,
f4816ac6 ML	519	.dev_close = hw_dev_close,
f4816ac6 ML	520	.dev_acquisition_start = hw_dev_acquisition_start,
	521	.dev_acquisition_stop = hw_dev_acquisition_stop,
	522	.priv = NULL,
	523	};