[libsigrok.git] / hardware / colead-slm / 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_CONF_CONN,
	SR_CONF_SERIALCOMM,
	0,
};

static const int hwcaps[] = {
	SR_CONF_SOUNDLEVELMETER,
	SR_CONF_LIMIT_SAMPLES,
	SR_CONF_LIMIT_MSEC,
	SR_CONF_CONTINUOUS,
	0,
};

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;
	}

	drvc->sr_ctx = sr_ctx;
	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_config *src;
	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) {
		src = l->data;
		switch (src->key) {
		case SR_CONF_CONN:
			conn = src->value;
			break;
		case SR_CONF_SERIALCOMM:
			serialcomm = src->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 config_set(int id, const void *value, const struct sr_dev_inst *sdi)
{
	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 (id) {
	case SR_CONF_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_CONF_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.", id);
		return SR_ERR;
		break;
	}

	return SR_OK;
}

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

	(void)sdi;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = hwopts;
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = hwcaps;
		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 sr_datafeed_packet packet;
	struct sr_datafeed_header header;
	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);

	/* 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,
	.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
	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_CONF_CONN,
	35	SR_CONF_SERIALCOMM,
	36	0,
	37	};
	38
	39	static const int hwcaps[] = {
	40	SR_CONF_SOUNDLEVELMETER,
	41	SR_CONF_LIMIT_SAMPLES,
	42	SR_CONF_LIMIT_MSEC,
	43	SR_CONF_CONTINUOUS,
	44	0,
	45	};
	46
	47	SR_PRIV struct sr_dev_driver colead_slm_driver_info;
	48	static struct sr_dev_driver *di = &colead_slm_driver_info;
	49
	50	/* Properly close and free all devices. */
	51	static int clear_instances(void)
	52	{
	53	struct sr_dev_inst *sdi;
	54	struct drv_context *drvc;
	55	struct dev_context *devc;
	56	GSList *l;
	57
	58	if (!(drvc = di->priv))
	59	return SR_OK;
	60
	61	for (l = drvc->instances; l; l = l->next) {
	62	if (!(sdi = l->data))
	63	continue;
	64	if (!(devc = sdi->priv))
	65	continue;
	66	sr_serial_dev_inst_free(devc->serial);
	67	sr_dev_inst_free(sdi);
	68	}
	69	g_slist_free(drvc->instances);
	70	drvc->instances = NULL;
	71
	72	return SR_OK;
	73	}
	74
	75	static int hw_init(struct sr_context *sr_ctx)
	76	{
	77	struct drv_context *drvc;
	78
	79	if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) {
	80	sr_err("Driver context malloc failed.");
	81	return SR_ERR;
	82	}
	83
	84	drvc->sr_ctx = sr_ctx;
	85	di->priv = drvc;
	86
	87	return SR_OK;
	88	}
	89
	90	static GSList hw_scan(GSList options)
	91	{
	92	struct drv_context *drvc;
	93	struct dev_context *devc;
	94	struct sr_dev_inst *sdi;
	95	struct sr_config *src;
	96	struct sr_probe *probe;
	97	GSList devices, l;
	98	const char conn, serialcomm;
	99
	100	devices = NULL;
	101	drvc = di->priv;
	102	drvc->instances = NULL;
	103
	104	conn = serialcomm = NULL;
	105	for (l = options; l; l = l->next) {
	106	src = l->data;
	107	switch (src->key) {
	108	case SR_CONF_CONN:
	109	conn = src->value;
	110	break;
	111	case SR_CONF_SERIALCOMM:
	112	serialcomm = src->value;
	113	break;
	114	}
	115	}
	116	if (!conn)
	117	return NULL;
	118	if (!serialcomm)
	119	serialcomm = SERIALCOMM;
	120
	121	if (!(sdi = sr_dev_inst_new(0, SR_ST_INACTIVE, "Colead",
	122	"SL-5868P", NULL)))
	123	return NULL;
	124
	125	if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) {
	126	sr_dbg("failed to malloc devc");
	127	return NULL;
	128	}
	129
	130	if (!(devc->serial = sr_serial_dev_inst_new(conn, serialcomm)))
	131	return NULL;
	132
	133	sdi->priv = devc;
	134	sdi->driver = di;
	135	if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1")))
	136	return NULL;
	137	sdi->probes = g_slist_append(sdi->probes, probe);
	138	drvc->instances = g_slist_append(drvc->instances, sdi);
	139	devices = g_slist_append(devices, sdi);
	140
	141	return devices;
	142	}
	143
	144	static GSList *hw_dev_list(void)
	145	{
	146	struct drv_context *drvc;
	147
	148	drvc = di->priv;
	149
	150	return drvc->instances;
	151	}
	152
	153	static int hw_dev_open(struct sr_dev_inst *sdi)
	154	{
	155	struct dev_context *devc;
	156
	157	if (!(devc = sdi->priv)) {
	158	sr_err("sdi->priv was NULL.");
	159	return SR_ERR_BUG;
	160	}
	161
	162	if (serial_open(devc->serial, SERIAL_RDWR) != SR_OK)
	163	return SR_ERR;
	164
	165	sdi->status = SR_ST_ACTIVE;
	166
	167	return SR_OK;
	168	}
	169
	170	static int hw_dev_close(struct sr_dev_inst *sdi)
	171	{
	172	struct dev_context *devc;
	173
	174	if (!(devc = sdi->priv)) {
	175	sr_err("sdi->priv was NULL.");
	176	return SR_ERR_BUG;
	177	}
	178
	179	if (devc->serial && devc->serial->fd != -1) {
	180	serial_close(devc->serial);
	181	sdi->status = SR_ST_INACTIVE;
	182	}
	183
	184	return SR_OK;
	185	}
	186
	187	static int hw_cleanup(void)
	188	{
	189	clear_instances();
	190
	191	return SR_OK;
	192	}
	193
	194	static int config_set(int id, const void value, const struct sr_dev_inst sdi)
	195	{
	196	struct dev_context *devc;
	197
	198	if (sdi->status != SR_ST_ACTIVE)
	199	return SR_ERR;
	200
	201	if (!(devc = sdi->priv)) {
	202	sr_err("sdi->priv was NULL.");
	203	return SR_ERR_BUG;
	204	}
	205
	206	switch (id) {
	207	case SR_CONF_LIMIT_MSEC:
	208	/* TODO: not yet implemented */
	209	if ((const uint64_t )value == 0) {
	210	sr_err("LIMIT_MSEC can't be 0.");
	211	return SR_ERR;
	212	}
	213	devc->limit_msec = (const uint64_t )value;
	214	sr_dbg("Setting time limit to %" PRIu64 "ms.",
	215	devc->limit_msec);
	216	break;
	217	case SR_CONF_LIMIT_SAMPLES:
	218	devc->limit_samples = (const uint64_t )value;
	219	sr_dbg("Setting sample limit to %" PRIu64 ".",
	220	devc->limit_samples);
	221	break;
	222	default:
	223	sr_err("Unknown capability: %d.", id);
	224	return SR_ERR;
	225	break;
	226	}
	227
	228	return SR_OK;
	229	}
	230
	231	static int config_list(int key, const void *data, const struct sr_dev_inst sdi)
	232	{
	233
	234	(void)sdi;
	235
	236	switch (key) {
	237	case SR_CONF_SCAN_OPTIONS:
	238	*data = hwopts;
	239	break;
	240	case SR_CONF_DEVICE_OPTIONS:
	241	*data = hwcaps;
	242	break;
	243	default:
	244	return SR_ERR_ARG;
	245	}
	246
	247	return SR_OK;
	248	}
	249
	250	static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
	251	void *cb_data)
	252	{
	253	struct sr_datafeed_packet packet;
	254	struct sr_datafeed_header header;
	255	struct dev_context *devc;
	256
	257	if (!(devc = sdi->priv)) {
	258	sr_err("sdi->priv was NULL.");
	259	return SR_ERR_BUG;
	260	}
	261
	262	sr_dbg("Starting acquisition.");
	263
	264	devc->cb_data = cb_data;
	265
	266	/* Send header packet to the session bus. */
	267	sr_dbg("Sending SR_DF_HEADER.");
	268	packet.type = SR_DF_HEADER;
	269	packet.payload = (uint8_t *)&header;
	270	header.feed_version = 1;
	271	gettimeofday(&header.starttime, NULL);
	272	sr_session_send(devc->cb_data, &packet);
	273
	274	/* Poll every 150ms, or whenever some data comes in. */
	275	sr_source_add(devc->serial->fd, G_IO_IN, 150, colead_slm_receive_data,
	276	(void *)sdi);
	277
	278	return SR_OK;
	279	}
	280
	281	static int hw_dev_acquisition_stop(struct sr_dev_inst sdi, void cb_data)
	282	{
	283	struct sr_datafeed_packet packet;
	284	struct dev_context *devc;
	285
	286	if (sdi->status != SR_ST_ACTIVE)
	287	return SR_ERR;
	288
	289	if (!(devc = sdi->priv)) {
	290	sr_err("sdi->priv was NULL.");
	291	return SR_ERR_BUG;
	292	}
	293
	294	sr_dbg("Stopping acquisition.");
	295
	296	sr_source_remove(devc->serial->fd);
	297	hw_dev_close((struct sr_dev_inst *)sdi);
	298
	299	/* Send end packet to the session bus. */
	300	sr_dbg("Sending SR_DF_END.");
	301	packet.type = SR_DF_END;
	302	sr_session_send(cb_data, &packet);
	303
	304	return SR_OK;
	305	}
	306
	307	SR_PRIV struct sr_dev_driver colead_slm_driver_info = {
	308	.name = "colead-slm",
	309	.longname = "Colead SLM",
	310	.api_version = 1,
	311	.init = hw_init,
	312	.cleanup = hw_cleanup,
	313	.scan = hw_scan,
	314	.dev_list = hw_dev_list,
	315	.dev_clear = clear_instances,
	316	.config_set = config_set,
	317	.config_list = config_list,
	318	.dev_open = hw_dev_open,
	319	.dev_close = hw_dev_close,
	320	.dev_acquisition_start = hw_dev_acquisition_start,
	321	.dev_acquisition_stop = hw_dev_acquisition_stop,
	322	.priv = NULL,
	323	};