[libsigrok.git] / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "protocol.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>

/* The Colead SL-5868P uses this. */
#define SERIALCOMM "2400/8n1"

static const int hwopts[] = {
	SR_HWOPT_CONN,
	SR_HWOPT_SERIALCOMM,
	0,
};

static const int hwcaps[] = {
	SR_HWCAP_SOUNDLEVELMETER,
	SR_HWCAP_LIMIT_SAMPLES,
	SR_HWCAP_LIMIT_MSEC,
	SR_HWCAP_CONTINUOUS,
	0,
};

static const char *probe_names[] = {
	"P1",
	NULL,
};

SR_PRIV struct sr_dev_driver colead_slm_driver_info;
static struct sr_dev_driver *di = &colead_slm_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;
		sr_serial_dev_inst_free(devc->serial);
		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)
{
	struct drv_context *drvc;

	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
		sr_err("Driver context malloc failed.");
		return SR_ERR;
	}

	di->priv = drvc;

	return SR_OK;
}

static GSList *hw_scan(GSList *options)
{
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_dev_inst *sdi;
	struct sr_hwopt *opt;
	struct sr_probe *probe;
	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) {
		opt = l->data;
		switch (opt->hwopt) {
		case SR_HWOPT_CONN:
			conn = opt->value;
			break;
		case SR_HWOPT_SERIALCOMM:
			serialcomm = opt->value;
			break;
		}
	}
	if (!conn)
		return NULL;
	if (!serialcomm)
		serialcomm = SERIALCOMM;

	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Colead",
			"SL-5868P", NULL)))
		return NULL;

	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
		sr_dbg("failed to malloc devc");
		return NULL;
	}

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

	sdi->priv = devc;
	sdi->driver = di;
	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
		return NULL;
	sdi->probes = g_slist_append(sdi->probes, probe);
	drvc->instances = g_slist_append(drvc->instances, sdi);
	devices = g_slist_append(devices, sdi);

	return devices;
}

static GSList *hw_dev_list(void)
{
	struct drv_context *drvc;

	drvc = di->priv;

	return drvc->instances;
}

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

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

	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
		return SR_ERR;

	sdi->status = SR_ST_ACTIVE;

	return SR_OK;
}

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

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

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

	return SR_OK;
}

static int hw_cleanup(void)
{
	clear_instances();

	return SR_OK;
}

static int hw_info_get(int info_id, const void **data,
		       const struct sr_dev_inst *sdi)
{
	
	(void)sdi;

	switch (info_id) {
	case SR_DI_HWOPTS:
		*data = hwopts;
		break;
	case SR_DI_HWCAPS:
		*data = hwcaps;
		break;
	case SR_DI_NUM_PROBES:
		*data = GINT_TO_POINTER(1);
		break;
	case SR_DI_PROBE_NAMES:
		*data = probe_names;
		break;
	default:
		return SR_ERR_ARG;
	}

	return SR_OK;
}

static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
			     const void *value)
{
	struct dev_context *devc;

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

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

	switch (hwcap) {
	case SR_HWCAP_LIMIT_MSEC:
		/* TODO: not yet implemented */
		if (*(const uint64_t *)value == 0) {
			sr_err("LIMIT_MSEC can't be 0.");
			return SR_ERR;
		}
		devc->limit_msec = *(const uint64_t *)value;
		sr_dbg("Setting time limit to %" PRIu64 "ms.",
		       devc->limit_msec);
		break;
	case SR_HWCAP_LIMIT_SAMPLES:
		devc->limit_samples = *(const uint64_t *)value;
		sr_dbg("Setting sample limit to %" PRIu64 ".",
		       devc->limit_samples);
		break;
	default:
		sr_err("Unknown capability: %d.", hwcap);
		return SR_ERR;
		break;
	}

	return SR_OK;
}

static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
				    void *cb_data)
{
	struct sr_datafeed_packet packet;
	struct sr_datafeed_header header;
	struct sr_datafeed_meta_analog meta;
	struct dev_context *devc;

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

	sr_dbg("Starting acquisition.");

	devc->cb_data = cb_data;

	/* Send header packet to the session bus. */
	sr_dbg("Sending SR_DF_HEADER.");
	packet.type = SR_DF_HEADER;
	packet.payload = (uint8_t *)&header;
	header.feed_version = 1;
	gettimeofday(&header.starttime, NULL);
	sr_session_send(devc->cb_data, &packet);

	/* Send metadata about the SR_DF_ANALOG packets to come. */
	sr_dbg("Sending SR_DF_META_ANALOG.");
	packet.type = SR_DF_META_ANALOG;
	packet.payload = &meta;
	meta.num_probes = 1;
	sr_session_send(devc->cb_data, &packet);

	/* Poll every 150ms, or whenever some data comes in. */
	sr_source_add(devc->serial->fd, G_IO_IN, 150, colead_slm_receive_data,
			(void *)sdi);

	return SR_OK;
}

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

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

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

	sr_dbg("Stopping acquisition.");

	sr_source_remove(devc->serial->fd);
	hw_dev_close((struct sr_dev_inst *)sdi);

	/* Send end packet to the session bus. */
	sr_dbg("Sending SR_DF_END.");
	packet.type = SR_DF_END;
	sr_session_send(cb_data, &packet);

	return SR_OK;
}

SR_PRIV struct sr_dev_driver colead_slm_driver_info = {
	.name = "colead-slm",
	.longname = "Colead SLM",
	.api_version = 1,
	.init = hw_init,
	.cleanup = hw_cleanup,
	.scan = hw_scan,
	.dev_list = hw_dev_list,
	.dev_clear = clear_instances,
	.dev_open = hw_dev_open,
	.dev_close = hw_dev_close,
	.info_get = hw_info_get,
	.dev_config_set = hw_dev_config_set,
	.dev_acquisition_start = hw_dev_acquisition_start,
	.dev_acquisition_stop = hw_dev_acquisition_stop,
	.priv = NULL,
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
	5	*
	6	* This program is free software: you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation, either version 3 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program. If not, see <http://www.gnu.org/licenses/>.
	18	*/
	19
	20	#include <glib.h>
	21	#include "libsigrok.h"
	22	#include "libsigrok-internal.h"
	23	#include "protocol.h"
	24	#include <sys/types.h>
	25	#include <sys/stat.h>
	26	#include <fcntl.h>
	27	#include <errno.h>
	28	#include <string.h>
	29
	30	/* The Colead SL-5868P uses this. */
	31	#define SERIALCOMM "2400/8n1"
	32
	33	static const int hwopts[] = {
	34	SR_HWOPT_CONN,
	35	SR_HWOPT_SERIALCOMM,
	36	0,
	37	};
	38
	39	static const int hwcaps[] = {
	40	SR_HWCAP_SOUNDLEVELMETER,
	41	SR_HWCAP_LIMIT_SAMPLES,
	42	SR_HWCAP_LIMIT_MSEC,
	43	SR_HWCAP_CONTINUOUS,
	44	0,
	45	};
	46
	47	static const char *probe_names[] = {
	48	"P1",
	49	NULL,
	50	};
	51
	52	SR_PRIV struct sr_dev_driver colead_slm_driver_info;
	53	static struct sr_dev_driver *di = &colead_slm_driver_info;
	54
	55	/* Properly close and free all devices. */
	56	static int clear_instances(void)
	57	{
	58	struct sr_dev_inst *sdi;
	59	struct drv_context *drvc;
	60	struct dev_context *devc;
	61	GSList *l;
	62
	63	if (!(drvc = di->priv))
	64	return SR_OK;
	65
	66	for (l = drvc->instances; l; l = l->next) {
	67	if (!(sdi = l->data))
	68	continue;
	69	if (!(devc = sdi->priv))
	70	continue;
	71	sr_serial_dev_inst_free(devc->serial);
	72	sr_dev_inst_free(sdi);
	73	}
	74	g_slist_free(drvc->instances);
	75	drvc->instances = NULL;
	76
	77	return SR_OK;
	78	}
	79
	80	static int hw_init(struct sr_context *sr_ctx)
	81	{
	82	struct drv_context *drvc;
	83
	84	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
	85	sr_err("Driver context malloc failed.");
	86	return SR_ERR;
	87	}
	88
	89	di->priv = drvc;
	90
	91	return SR_OK;
	92	}
	93
	94	static GSList hw_scan(GSList options)
	95	{
	96	struct drv_context *drvc;
	97	struct dev_context *devc;
	98	struct sr_dev_inst *sdi;
	99	struct sr_hwopt *opt;
	100	struct sr_probe *probe;
	101	GSList devices, l;
	102	const char conn, serialcomm;
	103
	104	devices = NULL;
	105	drvc = di->priv;
	106	drvc->instances = NULL;
	107
	108	conn = serialcomm = NULL;
	109	for (l = options; l; l = l->next) {
	110	opt = l->data;
	111	switch (opt->hwopt) {
	112	case SR_HWOPT_CONN:
	113	conn = opt->value;
	114	break;
	115	case SR_HWOPT_SERIALCOMM:
	116	serialcomm = opt->value;
	117	break;
	118	}
	119	}
	120	if (!conn)
	121	return NULL;
	122	if (!serialcomm)
	123	serialcomm = SERIALCOMM;
	124
	125	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Colead",
	126	"SL-5868P", NULL)))
	127	return NULL;
	128
	129	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	130	sr_dbg("failed to malloc devc");
	131	return NULL;
	132	}
	133
	134	if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm)))
	135	return NULL;
	136
	137	sdi->priv = devc;
	138	sdi->driver = di;
	139	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	140	return NULL;
	141	sdi->probes = g_slist_append(sdi->probes, probe);
	142	drvc->instances = g_slist_append(drvc->instances, sdi);
	143	devices = g_slist_append(devices, sdi);
	144
	145	return devices;
	146	}
	147
	148	static GSList *hw_dev_list(void)
	149	{
	150	struct drv_context *drvc;
	151
	152	drvc = di->priv;
	153
	154	return drvc->instances;
	155	}
	156
	157	static int hw_dev_open(struct sr_dev_inst *sdi)
	158	{
	159	struct dev_context *devc;
	160
	161	if (!(devc = sdi->priv)) {
	162	sr_err("sdi->priv was NULL.");
	163	return SR_ERR_BUG;
	164	}
	165
	166	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	167	return SR_ERR;
	168
	169	sdi->status = SR_ST_ACTIVE;
	170
	171	return SR_OK;
	172	}
	173
	174	static int hw_dev_close(struct sr_dev_inst *sdi)
	175	{
	176	struct dev_context *devc;
	177
	178	if (!(devc = sdi->priv)) {
	179	sr_err("sdi->priv was NULL.");
	180	return SR_ERR_BUG;
	181	}
	182
	183	if (devc->serial && devc->serial->fd != -1) {
	184	serial_close(devc->serial);
	185	sdi->status = SR_ST_INACTIVE;
	186	}
	187
	188	return SR_OK;
	189	}
	190
	191	static int hw_cleanup(void)
	192	{
	193	clear_instances();
	194
	195	return SR_OK;
	196	}
	197
	198	static int hw_info_get(int info_id, const void **data,
	199	const struct sr_dev_inst *sdi)
	200	{
	201
	202	(void)sdi;
	203
	204	switch (info_id) {
	205	case SR_DI_HWOPTS:
	206	*data = hwopts;
	207	break;
	208	case SR_DI_HWCAPS:
	209	*data = hwcaps;
	210	break;
	211	case SR_DI_NUM_PROBES:
	212	*data = GINT_TO_POINTER(1);
	213	break;
	214	case SR_DI_PROBE_NAMES:
	215	*data = probe_names;
	216	break;
	217	default:
	218	return SR_ERR_ARG;
	219	}
	220
	221	return SR_OK;
	222	}
	223
	224	static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap,
	225	const void *value)
	226	{
	227	struct dev_context *devc;
	228
	229	if (sdi->status != SR_ST_ACTIVE)
	230	return SR_ERR;
	231
	232	if (!(devc = sdi->priv)) {
	233	sr_err("sdi->priv was NULL.");
	234	return SR_ERR_BUG;
	235	}
	236
	237	switch (hwcap) {
	238	case SR_HWCAP_LIMIT_MSEC:
	239	/* TODO: not yet implemented */
	240	if ((const uint64_t )value == 0) {
	241	sr_err("LIMIT_MSEC can't be 0.");
	242	return SR_ERR;
	243	}
	244	devc->limit_msec = (const uint64_t )value;
	245	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	246	devc->limit_msec);
	247	break;
	248	case SR_HWCAP_LIMIT_SAMPLES:
	249	devc->limit_samples = (const uint64_t )value;
	250	sr_dbg("Setting sample limit to %" PRIu64 ".",
	251	devc->limit_samples);
	252	break;
	253	default:
	254	sr_err("Unknown capability: %d.", hwcap);
	255	return SR_ERR;
	256	break;
	257	}
	258
	259	return SR_OK;
	260	}
	261
	262	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	263	void *cb_data)
	264	{
	265	struct sr_datafeed_packet packet;
	266	struct sr_datafeed_header header;
	267	struct sr_datafeed_meta_analog meta;
	268	struct dev_context *devc;
	269
	270	if (!(devc = sdi->priv)) {
	271	sr_err("sdi->priv was NULL.");
	272	return SR_ERR_BUG;
	273	}
	274
	275	sr_dbg("Starting acquisition.");
	276
	277	devc->cb_data = cb_data;
	278
	279	/* Send header packet to the session bus. */
	280	sr_dbg("Sending SR_DF_HEADER.");
	281	packet.type = SR_DF_HEADER;
	282	packet.payload = (uint8_t *)&header;
	283	header.feed_version = 1;
	284	gettimeofday(&header.starttime, NULL);
	285	sr_session_send(devc->cb_data, &packet);
	286
	287	/* Send metadata about the SR_DF_ANALOG packets to come. */
	288	sr_dbg("Sending SR_DF_META_ANALOG.");
	289	packet.type = SR_DF_META_ANALOG;
	290	packet.payload = &meta;
	291	meta.num_probes = 1;
	292	sr_session_send(devc->cb_data, &packet);
	293
	294	/* Poll every 150ms, or whenever some data comes in. */
	295	sr_source_add(devc->serial->fd, G_IO_IN, 150, colead_slm_receive_data,
	296	(void *)sdi);
	297
	298	return SR_OK;
	299	}
	300
	301	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	302	{
	303	struct sr_datafeed_packet packet;
	304	struct dev_context *devc;
	305
	306	if (sdi->status != SR_ST_ACTIVE)
	307	return SR_ERR;
	308
	309	if (!(devc = sdi->priv)) {
	310	sr_err("sdi->priv was NULL.");
	311	return SR_ERR_BUG;
	312	}
	313
	314	sr_dbg("Stopping acquisition.");
	315
	316	sr_source_remove(devc->serial->fd);
	317	hw_dev_close((struct sr_dev_inst *)sdi);
	318
	319	/* Send end packet to the session bus. */
	320	sr_dbg("Sending SR_DF_END.");
	321	packet.type = SR_DF_END;
	322	sr_session_send(cb_data, &packet);
	323
	324	return SR_OK;
	325	}
	326
	327	SR_PRIV struct sr_dev_driver colead_slm_driver_info = {
	328	.name = "colead-slm",
	329	.longname = "Colead SLM",
	330	.api_version = 1,
	331	.init = hw_init,
	332	.cleanup = hw_cleanup,
	333	.scan = hw_scan,
	334	.dev_list = hw_dev_list,
	335	.dev_clear = clear_instances,
	336	.dev_open = hw_dev_open,
	337	.dev_close = hw_dev_close,
	338	.info_get = hw_info_get,
	339	.dev_config_set = hw_dev_config_set,
	340	.dev_acquisition_start = hw_dev_acquisition_start,
	341	.dev_acquisition_stop = hw_dev_acquisition_stop,
	342	.priv = NULL,
	343	};