[libsigrok.git] / src / hardware / kern-scale / api.c

/*
 * This file is part of the libsigrok project.
 *
 * Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
 *
 * 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 2 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, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 */

#include <config.h>
#include <glib.h>
#include <libsigrok/libsigrok.h>
#include "libsigrok-internal.h"
#include "protocol.h"

static const uint32_t scanopts[] = {
	SR_CONF_CONN,
	SR_CONF_SERIALCOMM,
};

static const uint32_t devopts[] = {
	SR_CONF_SCALE,
	SR_CONF_CONTINUOUS,
	SR_CONF_LIMIT_SAMPLES | SR_CONF_SET,
	SR_CONF_LIMIT_MSEC | SR_CONF_SET,
};

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

static GSList *scan(struct sr_dev_driver *di, GSList *options)
{
	struct scale_info *scale;
	struct sr_config *src;
	GSList *l, *devices;
	const char *conn, *serialcomm;
	struct sr_dev_inst *sdi;
	struct drv_context *drvc;
	struct dev_context *devc;
	struct sr_serial_dev_inst *serial;
	int ret;
	size_t len;
	uint8_t buf[128];

	scale = (struct scale_info *)di;

	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)
		serialcomm = scale->conn;

	serial = sr_serial_dev_inst_new(conn, serialcomm);

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

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

	drvc = di->context;
	devices = NULL;
	serial_flush(serial);

	sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
	if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
		goto scan_cleanup;
	/* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */

	/* Let's get a bit of data and see if we can find a packet. */
	len = sizeof(buf);
	ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
				   scale->packet_valid, 3000, scale->baudrate);
	if (ret != SR_OK)
		goto scan_cleanup;

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

	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	sdi->status = SR_ST_INACTIVE;
	sdi->vendor = g_strdup(scale->vendor);
	sdi->model = g_strdup(scale->device);
	devc = g_malloc0(sizeof(struct dev_context));
	sr_sw_limits_init(&devc->limits);
	sdi->inst_type = SR_INST_SERIAL;
	sdi->conn = serial;
	sdi->priv = devc;
	sdi->driver = di;
	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
	drvc->instances = g_slist_append(drvc->instances, sdi);
	devices = g_slist_append(devices, sdi);

scan_cleanup:
	serial_close(serial);

	return devices;
}

static int config_set(uint32_t key, GVariant *data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	struct dev_context *devc;

	(void)cg;

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

	if (!(devc = sdi->priv))
		return SR_ERR_BUG;

	return sr_sw_limits_config_set(&devc->limits, key, data);
}

static int config_list(uint32_t key, GVariant **data, const struct sr_dev_inst *sdi,
		const struct sr_channel_group *cg)
{
	(void)sdi;
	(void)cg;

	switch (key) {
	case SR_CONF_SCAN_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
			scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
		break;
	case SR_CONF_DEVICE_OPTIONS:
		*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
			devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
		break;
	default:
		return SR_ERR_NA;
	}

	return SR_OK;
}

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

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

	devc = sdi->priv;
	serial = sdi->conn;

	sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
	if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
		return SR_ERR;
	/* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */

	sr_sw_limits_acquisition_start(&devc->limits);
	std_session_send_df_header(sdi, LOG_PREFIX);

	/* Poll every 50ms, or whenever some data comes in. */
	serial_source_add(sdi->session, serial, G_IO_IN, 50,
		      kern_scale_receive_data, (void *)sdi);

	return SR_OK;
}

static int dev_acquisition_stop(struct sr_dev_inst *sdi)
{
	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
			sdi->conn, LOG_PREFIX);
}

#define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
			VALID, PARSE) \
	&(struct scale_info) { \
		{ \
			.name = ID, \
			.longname = VENDOR " " MODEL, \
			.api_version = 1, \
			.init = init, \
			.cleanup = std_cleanup, \
			.scan = scan, \
			.dev_list = std_dev_list, \
			.config_get = NULL, \
			.config_set = config_set, \
			.config_list = config_list, \
			.dev_open = std_serial_dev_open, \
			.dev_close = std_serial_dev_close, \
			.dev_acquisition_start = dev_acquisition_start, \
			.dev_acquisition_stop = dev_acquisition_stop, \
			.context = NULL, \
		}, \
		VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
		VALID, PARSE, sizeof(struct CHIPSET##_info) \
	}

/*
 * Some scales have (user-configurable) 14-byte or 15-byte packets.
 * We transparently support both variants by specifying the larger value
 * below and due to the way the stream parser works.
 *
 * The scales have a standard baudrate (model dependent) as listed below,
 * but serial parameters are user-configurable. We support that by letting
 * the user override them via "serialcomm".
 */

SR_PRIV const struct scale_info *kern_scale_drivers[] = {
	SCALE(
		"kern-ew-6200-2nm", kern,
		"KERN", "EW 6200-2NM", "1200/8n2", 1200,
		15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse
	),
	NULL
};
Commit	Line	Data
	1	/*
	2	* This file is part of the libsigrok project.
	3	*
	4	* Copyright (C) 2015 Uwe Hermann <uwe@hermann-uwe.de>
	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 2 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, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
	20
	21	#include <config.h>
	22	#include <glib.h>
	23	#include <libsigrok/libsigrok.h>
	24	#include "libsigrok-internal.h"
	25	#include "protocol.h"
	26
	27	static const uint32_t scanopts[] = {
	28	SR_CONF_CONN,
	29	SR_CONF_SERIALCOMM,
	30	};
	31
	32	static const uint32_t devopts[] = {
	33	SR_CONF_SCALE,
	34	SR_CONF_CONTINUOUS,
	35	SR_CONF_LIMIT_SAMPLES \| SR_CONF_SET,
	36	SR_CONF_LIMIT_MSEC \| SR_CONF_SET,
	37	};
	38
	39	static int init(struct sr_dev_driver di, struct sr_context sr_ctx)
	40	{
	41	return std_init(sr_ctx, di, LOG_PREFIX);
	42	}
	43
	44	static GSList scan(struct sr_dev_driver di, GSList *options)
	45	{
	46	struct scale_info *scale;
	47	struct sr_config *src;
	48	GSList l, devices;
	49	const char conn, serialcomm;
	50	struct sr_dev_inst *sdi;
	51	struct drv_context *drvc;
	52	struct dev_context *devc;
	53	struct sr_serial_dev_inst *serial;
	54	int ret;
	55	size_t len;
	56	uint8_t buf[128];
	57
	58	scale = (struct scale_info *)di;
	59
	60	conn = serialcomm = NULL;
	61	for (l = options; l; l = l->next) {
	62	src = l->data;
	63	switch (src->key) {
	64	case SR_CONF_CONN:
	65	conn = g_variant_get_string(src->data, NULL);
	66	break;
	67	case SR_CONF_SERIALCOMM:
	68	serialcomm = g_variant_get_string(src->data, NULL);
	69	break;
	70	}
	71	}
	72	if (!conn)
	73	return NULL;
	74
	75	if (!serialcomm)
	76	serialcomm = scale->conn;
	77
	78	serial = sr_serial_dev_inst_new(conn, serialcomm);
	79
	80	if (serial_open(serial, SERIAL_RDWR) != SR_OK)
	81	return NULL;
	82
	83	sr_info("Probing serial port %s.", conn);
	84
	85	drvc = di->context;
	86	devices = NULL;
	87	serial_flush(serial);
	88
	89	sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
	90	if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
	91	goto scan_cleanup;
	92	/* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
	93
	94	/* Let's get a bit of data and see if we can find a packet. */
	95	len = sizeof(buf);
	96	ret = serial_stream_detect(serial, buf, &len, scale->packet_size,
	97	scale->packet_valid, 3000, scale->baudrate);
	98	if (ret != SR_OK)
	99	goto scan_cleanup;
	100
	101	sr_info("Found device on port %s.", conn);
	102
	103	sdi = g_malloc0(sizeof(struct sr_dev_inst));
	104	sdi->status = SR_ST_INACTIVE;
	105	sdi->vendor = g_strdup(scale->vendor);
	106	sdi->model = g_strdup(scale->device);
	107	devc = g_malloc0(sizeof(struct dev_context));
	108	sr_sw_limits_init(&devc->limits);
	109	sdi->inst_type = SR_INST_SERIAL;
	110	sdi->conn = serial;
	111	sdi->priv = devc;
	112	sdi->driver = di;
	113	sr_channel_new(sdi, 0, SR_CHANNEL_ANALOG, TRUE, "Mass");
	114	drvc->instances = g_slist_append(drvc->instances, sdi);
	115	devices = g_slist_append(devices, sdi);
	116
	117	scan_cleanup:
	118	serial_close(serial);
	119
	120	return devices;
	121	}
	122
	123	static int config_set(uint32_t key, GVariant data, const struct sr_dev_inst sdi,
	124	const struct sr_channel_group *cg)
	125	{
	126	struct dev_context *devc;
	127
	128	(void)cg;
	129
	130	if (sdi->status != SR_ST_ACTIVE)
	131	return SR_ERR_DEV_CLOSED;
	132
	133	if (!(devc = sdi->priv))
	134	return SR_ERR_BUG;
	135
	136	return sr_sw_limits_config_set(&devc->limits, key, data);
	137	}
	138
	139	static int config_list(uint32_t key, GVariant *data, const struct sr_dev_inst sdi,
	140	const struct sr_channel_group *cg)
	141	{
	142	(void)sdi;
	143	(void)cg;
	144
	145	switch (key) {
	146	case SR_CONF_SCAN_OPTIONS:
	147	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	148	scanopts, ARRAY_SIZE(scanopts), sizeof(uint32_t));
	149	break;
	150	case SR_CONF_DEVICE_OPTIONS:
	151	*data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32,
	152	devopts, ARRAY_SIZE(devopts), sizeof(uint32_t));
	153	break;
	154	default:
	155	return SR_ERR_NA;
	156	}
	157
	158	return SR_OK;
	159	}
	160
	161	static int dev_acquisition_start(const struct sr_dev_inst *sdi)
	162	{
	163	struct dev_context *devc;
	164	struct sr_serial_dev_inst *serial;
	165
	166	if (sdi->status != SR_ST_ACTIVE)
	167	return SR_ERR_DEV_CLOSED;
	168
	169	devc = sdi->priv;
	170	serial = sdi->conn;
	171
	172	sr_spew("Set O1 mode (continuous values, stable and unstable ones).");
	173	if (serial_write_nonblocking(serial, "O1\r\n", 4) != 4)
	174	return SR_ERR;
	175	/* Device replies with "A00\r\n" (OK) or "E01\r\n" (Error). Ignore. */
	176
	177	sr_sw_limits_acquisition_start(&devc->limits);
	178	std_session_send_df_header(sdi, LOG_PREFIX);
	179
	180	/* Poll every 50ms, or whenever some data comes in. */
	181	serial_source_add(sdi->session, serial, G_IO_IN, 50,
	182	kern_scale_receive_data, (void *)sdi);
	183
	184	return SR_OK;
	185	}
	186
	187	static int dev_acquisition_stop(struct sr_dev_inst *sdi)
	188	{
	189	return std_serial_dev_acquisition_stop(sdi, std_serial_dev_close,
	190	sdi->conn, LOG_PREFIX);
	191	}
	192
	193	#define SCALE(ID, CHIPSET, VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
	194	VALID, PARSE) \
	195	&(struct scale_info) { \
	196	{ \
	197	.name = ID, \
	198	.longname = VENDOR " " MODEL, \
	199	.api_version = 1, \
	200	.init = init, \
	201	.cleanup = std_cleanup, \
	202	.scan = scan, \
	203	.dev_list = std_dev_list, \
	204	.config_get = NULL, \
	205	.config_set = config_set, \
	206	.config_list = config_list, \
	207	.dev_open = std_serial_dev_open, \
	208	.dev_close = std_serial_dev_close, \
	209	.dev_acquisition_start = dev_acquisition_start, \
	210	.dev_acquisition_stop = dev_acquisition_stop, \
	211	.context = NULL, \
	212	}, \
	213	VENDOR, MODEL, CONN, BAUDRATE, PACKETSIZE, \
	214	VALID, PARSE, sizeof(struct CHIPSET##_info) \
	215	}
	216
	217	/*
	218	* Some scales have (user-configurable) 14-byte or 15-byte packets.
	219	* We transparently support both variants by specifying the larger value
	220	* below and due to the way the stream parser works.
	221	*
	222	* The scales have a standard baudrate (model dependent) as listed below,
	223	* but serial parameters are user-configurable. We support that by letting
	224	* the user override them via "serialcomm".
	225	*/
	226
	227	SR_PRIV const struct scale_info *kern_scale_drivers[] = {
	228	SCALE(
	229	"kern-ew-6200-2nm", kern,
	230	"KERN", "EW 6200-2NM", "1200/8n2", 1200,
	231	15 /* (or 14) */, sr_kern_packet_valid, sr_kern_parse
	232	),
	233	NULL
	234	};