[libsigrok.git] / hardware / brymen-dmm / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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 "protocol.h"

static const int32_t hwopts[] = {
	SR_CONF_CONN,
	SR_CONF_SERIALCOMM,
};

static const int32_t hwcaps[] = {
	SR_CONF_MULTIMETER,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_MSEC,
};

SR_PRIV struct sr_dev_driver brymen_bm857_driver_info;
static struct sr_dev_driver *di = &brymen_bm857_driver_info;

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

static void free_instance(void *inst)
{
	struct sr_dev_inst *sdi;
	struct sr_serial_dev_inst *serial;

	if (!(sdi = inst))
		return;

	serial = sdi->conn;
	sr_serial_dev_inst_free(serial);
	sr_dev_inst_free(sdi);
}

/* Properly close and free all devices. */
static int clear_instances(void)
{
	struct drv_context *drvc;

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

	g_slist_free_full(drvc->instances, free_instance);
	drvc->instances = NULL;

	return SR_OK;
}

static GSList *brymen_scan(const char *conn, const char *serialcomm)
{
	struct sr_dev_inst *sdi;
	struct dev_context *devc;
	struct drv_context *drvc;
	struct sr_probe *probe;
	struct sr_serial_dev_inst *serial;
	GSList *devices;
	int ret;
	uint8_t buf[128];
	size_t len;

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

	if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
		return NULL;

	sr_info("Probing port %s.", conn);

	devices = NULL;

	/* Request reading */
	if ((ret = brymen_packet_request(serial)) < 0) {
		sr_err("Unable to send command: %d.", ret);
		goto scan_cleanup;
	}

	len = 128;
	ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length,
			     brymen_packet_is_valid, 1000, 9600);
	if (ret != SR_OK)
		goto scan_cleanup;

	sr_info("Found device on port %s.", conn);

	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Brymen", "BM85x", "")))
		goto scan_cleanup;

	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
		sr_err("Device context malloc failed.");
		goto scan_cleanup;
	}

	sdi->inst_type = SR_INST_SERIAL;
	sdi->conn = serial;
	drvc = di->priv;
	sdi->priv = devc;
	sdi->driver = di;

	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
		goto scan_cleanup;

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

scan_cleanup:
	serial_close(serial);

	return devices;
}

static GSList *scan(GSList *options)
{
	struct drv_context *drvc;
	struct sr_config *src;
	GSList *devices, *l;
	const char *conn, *serialcomm;

	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) {
		/* Use the provided comm specs. */
		devices = brymen_scan(conn, serialcomm);
	} else {
		/* But 9600/8n1 should work all of the time. */
		devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1");
	}

	return devices;
}

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

static int dev_open(struct sr_dev_inst *sdi)
{
	struct sr_serial_dev_inst *serial;

	serial = sdi->conn;
	if (serial_open(serial, SERIAL_RDWR | SERIAL_NONBLOCK) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

static int dev_close(struct sr_dev_inst *sdi)
{
	struct sr_serial_dev_inst *serial;

	serial = sdi->conn;
	if (serial && serial->fd != -1) {
		serial_close(serial);
		sdi->status = SR_ST_INACTIVE;
	}

	return SR_OK;
}

static int 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;
	int ret;

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

	if (!(devc = sdi->priv)) {
		sr_err("sdi->priv was NULL.");
		return SR_ERR_BUG;
	}

	ret = SR_OK;
	switch (id) {
	case SR_CONF_LIMIT_SAMPLES:
		devc->limit_samples = g_variant_get_uint64(data);
		break;
	case SR_CONF_LIMIT_MSEC:
		devc->limit_msec = g_variant_get_uint64(data);
		break;
	default:
		ret = SR_ERR_NA;
	}

	return ret;
}

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

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
				hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

static int dev_acquisition_start(const struct sr_dev_inst *sdi, void *cb_data)
{
	struct dev_context *devc;
	struct sr_serial_dev_inst *serial;

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

	if (!(devc = sdi->priv)) {
		sr_err("sdi->priv was NULL.");
		return SR_ERR_BUG;
	}

	devc->cb_data = cb_data;

	/*
	 * Reset the number of samples to take. If we've already collected our
	 * quota, but we start a new session, and don't reset this, we'll just
	 * quit without acquiring any new samples.
	 */
	devc->num_samples = 0;
	devc->starttime = g_get_monotonic_time();

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

	/* Poll every 50ms, or whenever some data comes in. */
	serial = sdi->conn;
	sr_source_add(serial->fd, G_IO_IN, 50,
		      brymen_dmm_receive_data, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data)
{
	return std_hw_dev_acquisition_stop_serial(sdi, cb_data, dev_close,
						  sdi->conn, LOG_PREFIX);
}

SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = {
	.name = "brymen-bm857",
	.longname = "Brymen BM857",
	.api_version = 1,
	.init = init,
	.cleanup = cleanup,
	.scan = scan,
	.dev_list = dev_list,
	.dev_clear = clear_instances,
	.config_get = NULL,
	.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,
	.priv = NULL,
};
Commit	Line	Data
20cbc785 AG	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2012 Alexandru Gagniuc <mr.nuke.me@gmail.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
20cbc785 AG	20	#include "protocol.h"
20cbc785 AG	21
510b3e69	22	static const int32_t hwopts[] = {
601fb67c AG	23	SR_CONF_CONN,
601fb67c AG	24	SR_CONF_SERIALCOMM,
601fb67c AG	25	};
601fb67c AG	26
510b3e69	27	static const int32_t hwcaps[] = {
601fb67c AG	28	SR_CONF_MULTIMETER,
	29	SR_CONF_LIMIT_SAMPLES,
	30	SR_CONF_CONTINUOUS,
	31	SR_CONF_LIMIT_MSEC,
601fb67c AG	32	};
601fb67c AG	33
c5d6f5cc UH	34	SR_PRIV struct sr_dev_driver brymen_bm857_driver_info;
c5d6f5cc UH	35	static struct sr_dev_driver *di = &brymen_bm857_driver_info;
20cbc785	36
6078d2c9	37	static int init(struct sr_context *sr_ctx)
601fb67c	38	{
29a27196	39	return std_hw_init(sr_ctx, di, LOG_PREFIX);
601fb67c AG	40	}
	41
	42	static void free_instance(void *inst)
	43	{
	44	struct sr_dev_inst *sdi;
d9a7c349	45	struct sr_serial_dev_inst *serial;
c5d6f5cc	46
601fb67c AG	47	if (!(sdi = inst))
601fb67c AG	48	return;
d9a7c349 UH	49
	50	serial = sdi->conn;
	51	sr_serial_dev_inst_free(serial);
601fb67c AG	52	sr_dev_inst_free(sdi);
	53	}
	54
20cbc785 AG	55	/* Properly close and free all devices. */
	56	static int clear_instances(void)
	57	{
20cbc785	58	struct drv_context *drvc;
20cbc785 AG	59
	60	if (!(drvc = di->priv))
	61	return SR_OK;
	62
601fb67c	63	g_slist_free_full(drvc->instances, free_instance);
20cbc785 AG	64	drvc->instances = NULL;
	65
	66	return SR_OK;
	67	}
	68
601fb67c	69	static GSList brymen_scan(const char conn, const char *serialcomm)
20cbc785	70	{
601fb67c AG	71	struct sr_dev_inst *sdi;
601fb67c AG	72	struct dev_context *devc;
20cbc785	73	struct drv_context *drvc;
601fb67c AG	74	struct sr_probe *probe;
	75	struct sr_serial_dev_inst *serial;
	76	GSList *devices;
	77	int ret;
c5d6f5cc UH	78	uint8_t buf[128];
c5d6f5cc UH	79	size_t len;
20cbc785	80
601fb67c AG	81	if (!(serial = sr_serial_dev_inst_new(conn, serialcomm)))
	82	return NULL;
	83
c5d6f5cc	84	if (serial_open(serial, SERIAL_RDWR \| SERIAL_NONBLOCK) != SR_OK)
601fb67c AG	85	return NULL;
	86
	87	sr_info("Probing port %s.", conn);
	88
	89	devices = NULL;
	90
	91	/* Request reading */
c5d6f5cc UH	92	if ((ret = brymen_packet_request(serial)) < 0) {
c5d6f5cc UH	93	sr_err("Unable to send command: %d.", ret);
601fb67c	94	goto scan_cleanup;
20cbc785 AG	95	}
20cbc785 AG	96
c5d6f5cc	97	len = 128;
601fb67c AG	98	ret = brymen_stream_detect(serial, buf, &len, brymen_packet_length,
	99	brymen_packet_is_valid, 1000, 9600);
	100	if (ret != SR_OK)
	101	goto scan_cleanup;
20cbc785	102
601fb67c AG	103	sr_info("Found device on port %s.", conn);
	104
	105	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Brymen", "BM85x", "")))
	106	goto scan_cleanup;
	107
	108	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	109	sr_err("Device context malloc failed.");
	110	goto scan_cleanup;
	111	}
	112
d9a7c349 UH	113	sdi->inst_type = SR_INST_SERIAL;
d9a7c349 UH	114	sdi->conn = serial;
601fb67c AG	115	drvc = di->priv;
	116	sdi->priv = devc;
	117	sdi->driver = di;
	118
	119	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	120	goto scan_cleanup;
	121
	122	sdi->probes = g_slist_append(sdi->probes, probe);
	123	drvc->instances = g_slist_append(drvc->instances, sdi);
	124	devices = g_slist_append(devices, sdi);
	125
601fb67c AG	126	scan_cleanup:
	127	serial_close(serial);
	128
	129	return devices;
20cbc785 AG	130	}
20cbc785 AG	131
6078d2c9	132	static GSList scan(GSList options)
20cbc785 AG	133	{
20cbc785 AG	134	struct drv_context *drvc;
601fb67c AG	135	struct sr_config *src;
	136	GSList devices, l;
	137	const char conn, serialcomm;
20cbc785	138
20cbc785 AG	139	devices = NULL;
	140	drvc = di->priv;
	141	drvc->instances = NULL;
	142
601fb67c AG	143	conn = serialcomm = NULL;
	144	for (l = options; l; l = l->next) {
	145	src = l->data;
	146	switch (src->key) {
c5d6f5cc	147	case SR_CONF_CONN:
510b3e69	148	conn = g_variant_get_string(src->data, NULL);
c5d6f5cc UH	149	break;
c5d6f5cc UH	150	case SR_CONF_SERIALCOMM:
510b3e69	151	serialcomm = g_variant_get_string(src->data, NULL);
c5d6f5cc	152	break;
601fb67c AG	153	}
601fb67c AG	154	}
d9a7c349	155	if (!conn)
601fb67c	156	return NULL;
601fb67c AG	157
	158	if (serialcomm) {
	159	/* Use the provided comm specs. */
	160	devices = brymen_scan(conn, serialcomm);
	161	} else {
c5d6f5cc	162	/* But 9600/8n1 should work all of the time. */
601fb67c AG	163	devices = brymen_scan(conn, "9600/8n1/dtr=1/rts=1");
601fb67c AG	164	}
20cbc785 AG	165
	166	return devices;
	167	}
	168
6078d2c9	169	static GSList *dev_list(void)
20cbc785	170	{
0e94d524	171	return ((struct drv_context *)(di->priv))->instances;
20cbc785 AG	172	}
20cbc785 AG	173
6078d2c9	174	static int dev_open(struct sr_dev_inst *sdi)
20cbc785	175	{
d9a7c349	176	struct sr_serial_dev_inst *serial;
601fb67c	177
d9a7c349 UH	178	serial = sdi->conn;
d9a7c349 UH	179	if (serial_open(serial, SERIAL_RDWR \| SERIAL_NONBLOCK) != SR_OK)
601fb67c AG	180	return SR_ERR;
	181
	182	sdi->status = SR_ST_ACTIVE;
20cbc785 AG	183
	184	return SR_OK;
	185	}
	186
6078d2c9	187	static int dev_close(struct sr_dev_inst *sdi)
20cbc785	188	{
d9a7c349	189	struct sr_serial_dev_inst *serial;
601fb67c	190
d9a7c349 UH	191	serial = sdi->conn;
	192	if (serial && serial->fd != -1) {
	193	serial_close(serial);
601fb67c AG	194	sdi->status = SR_ST_INACTIVE;
601fb67c AG	195	}
20cbc785 AG	196
	197	return SR_OK;
	198	}
	199
6078d2c9	200	static int cleanup(void)
20cbc785 AG	201	{
	202	clear_instances();
	203
20cbc785 AG	204	return SR_OK;
	205	}
	206
510b3e69	207	static int config_set(int id, GVariant data, const struct sr_dev_inst sdi)
20cbc785	208	{
601fb67c	209	struct dev_context *devc;
20cbc785 AG	210	int ret;
20cbc785 AG	211
e73ffd42 BV	212	if (sdi->status != SR_ST_ACTIVE)
e73ffd42 BV	213	return SR_ERR_DEV_CLOSED;
20cbc785	214
601fb67c AG	215	if (!(devc = sdi->priv)) {
	216	sr_err("sdi->priv was NULL.");
	217	return SR_ERR_BUG;
	218	}
	219
20cbc785	220	ret = SR_OK;
601fb67c	221	switch (id) {
c5d6f5cc	222	case SR_CONF_LIMIT_SAMPLES:
510b3e69	223	devc->limit_samples = g_variant_get_uint64(data);
601fb67c	224	break;
c5d6f5cc	225	case SR_CONF_LIMIT_MSEC:
510b3e69	226	devc->limit_msec = g_variant_get_uint64(data);
601fb67c	227	break;
20cbc785	228	default:
bd6fbf62	229	ret = SR_ERR_NA;
20cbc785 AG	230	}
	231
	232	return ret;
	233	}
	234
510b3e69 BV	235	static int config_list(int key, GVariant *data, const struct sr_dev_inst sdi)
	236	{
	237	(void)sdi;
	238
	239	switch (key) {
	240	case SR_CONF_SCAN_OPTIONS:
	241	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	242	hwopts, ARRAY_SIZE(hwopts), sizeof(int32_t));
	243	break;
	244	case SR_CONF_DEVICE_OPTIONS:
	245	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_INT32,
	246	hwcaps, ARRAY_SIZE(hwcaps), sizeof(int32_t));
	247	break;
	248	default:
bd6fbf62	249	return SR_ERR_NA;
510b3e69 BV	250	}
	251
	252	return SR_OK;
	253	}
	254
6078d2c9	255	static int dev_acquisition_start(const struct sr_dev_inst sdi, void cb_data)
20cbc785	256	{
601fb67c	257	struct dev_context *devc;
d9a7c349	258	struct sr_serial_dev_inst *serial;
601fb67c	259
e73ffd42 BV	260	if (sdi->status != SR_ST_ACTIVE)
	261	return SR_ERR_DEV_CLOSED;
	262
601fb67c AG	263	if (!(devc = sdi->priv)) {
	264	sr_err("sdi->priv was NULL.");
	265	return SR_ERR_BUG;
	266	}
	267
601fb67c AG	268	devc->cb_data = cb_data;
	269
	270	/*
	271	* Reset the number of samples to take. If we've already collected our
	272	* quota, but we start a new session, and don't reset this, we'll just
	273	* quit without acquiring any new samples.
	274	*/
	275	devc->num_samples = 0;
	276	devc->starttime = g_get_monotonic_time();
	277
	278	/* Send header packet to the session bus. */
29a27196	279	std_session_send_df_header(cb_data, LOG_PREFIX);
601fb67c AG	280
601fb67c AG	281	/* Poll every 50ms, or whenever some data comes in. */
d9a7c349 UH	282	serial = sdi->conn;
d9a7c349 UH	283	sr_source_add(serial->fd, G_IO_IN, 50,
601fb67c	284	brymen_dmm_receive_data, (void *)sdi);
20cbc785 AG	285
	286	return SR_OK;
	287	}
	288
6078d2c9	289	static int dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
20cbc785	290	{
6078d2c9	291	return std_hw_dev_acquisition_stop_serial(sdi, cb_data, dev_close,
29a27196	292	sdi->conn, LOG_PREFIX);
20cbc785 AG	293	}
20cbc785 AG	294
c5d6f5cc UH	295	SR_PRIV struct sr_dev_driver brymen_bm857_driver_info = {
	296	.name = "brymen-bm857",
	297	.longname = "Brymen BM857",
20cbc785	298	.api_version = 1,
6078d2c9 UH	299	.init = init,
	300	.cleanup = cleanup,
	301	.scan = scan,
	302	.dev_list = dev_list,
20cbc785	303	.dev_clear = clear_instances,
6fab7b8f UH	304	.config_get = NULL,
	305	.config_set = config_set,
	306	.config_list = config_list,
6078d2c9 UH	307	.dev_open = dev_open,
	308	.dev_close = dev_close,
	309	.dev_acquisition_start = dev_acquisition_start,
	310	.dev_acquisition_stop = dev_acquisition_stop,
20cbc785 AG	311	.priv = NULL,
20cbc785 AG	312	};