[libsigrok.git] / hardware / agilent-dmm / sched.c

/*
 * This file is part of the sigrok 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 "config.h"
#include "agilent-dmm.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>


static void dispatch(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	const struct agdmm_job *jobs;
	int64_t now;
	int i;

	devc = sdi->priv;
	jobs = devc->profile->jobs;
	now = g_get_monotonic_time() / 1000;
	for (i = 0; (&jobs[i])->interval; i++) {
		if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
			sr_spew("agilent-dmm: running job %d", i);
			(&jobs[i])->send(sdi);
			devc->jobqueue[i] = now;
		}
	}

}

static void receive_line(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	const struct agdmm_recv *recvs, *recv;
	GRegex *reg;
	GMatchInfo *match;
	int i;

	devc = sdi->priv;

	/* Strip CRLF */
	while (devc->buflen) {
		if (*(devc->buf + devc->buflen - 1) == '\r'
				|| *(devc->buf + devc->buflen - 1) == '\n')
			*(devc->buf + --devc->buflen) = '\0';
		else
			break;
	}
	sr_spew("agilent-dmm: received '%s'", devc->buf);

	recv = NULL;
	recvs = devc->profile->recvs;
	for (i = 0; (&recvs[i])->recv_regex; i++) {
		reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
		if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
			recv = &recvs[i];
			break;
		}
		g_match_info_unref(match);
		g_regex_unref(reg);
	}
	if (recv) {
		recv->recv(sdi, match);
		g_match_info_unref(match);
		g_regex_unref(reg);
	}

	/* Done with this. */
	devc->buflen = 0;

}

SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
{
	const struct sr_dev_inst *sdi;
	struct dev_context *devc;
	int len;

	if (!(sdi = cb_data))
		return TRUE;

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

	if (revents == G_IO_IN) {
		/* Serial data arrived. */
		len = AGDMM_BUFSIZE - devc->buflen - 1;
		if (len > 0) {
			len = serial_read(fd, devc->buf + devc->buflen, len);
			if (len > 0) {
				devc->buflen += len;
				*(devc->buf + devc->buflen) = '\0';
				if (devc->buflen > 0 && *(devc->buf + devc->buflen - 1) == '\n')
					/* End of line */
					receive_line(sdi);
			}
		}
	}

	dispatch(sdi);

	if (devc->num_samples >= devc->limit_samples)
		sdi->driver->dev_acquisition_stop(sdi, cb_data);

	return TRUE;
}

static int agdmm_send(const struct sr_dev_inst *sdi, const char *cmd)
{
	struct dev_context *devc;
	char buf[32];

	devc = sdi->priv;
	sr_spew("agilent-dmm: sending '%s'", cmd);
	strncpy(buf, cmd, 28);
	if (!strncmp(buf, "*IDN?", 5))
		strncat(buf, "\r\n", 32);
	else
		strncat(buf, "\n\r\n", 32);
	if (serial_write(devc->serial->fd, buf, strlen(buf)) == -1) {
		sr_err("agilent-dmm: failed to send: %s", strerror(errno));
		return SR_ERR;
	}
	
	return SR_OK;
}

static int agdmm_stat_send(const struct sr_dev_inst *sdi)
{

	return agdmm_send(sdi, "STAT?");
}

static int agdmm_stat_recv(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
	struct dev_context *devc;
	char *s;

	devc = sdi->priv;
	s = g_match_info_fetch(match, 1);
	sr_spew("agilent-dmm: STAT response '%s'", s);

	/* Max, Min or Avg mode -- no way to tell which, so we'll
	 * set both flags to denote it's not a normal measurement. */
	if (s[0] == '1')
		devc->cur_mqflags |= SR_MQFLAG_MAX | SR_MQFLAG_MIN;
	else
		devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN);

	if (s[1] == '1')
		devc->cur_mqflags |= SR_MQFLAG_RELATIVE;
	else
		devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;

	/* Triggered or auto hold modes. */
	if (s[2] == '1' || s[3] == '1')
		devc->cur_mqflags |= SR_MQFLAG_HOLD;
	else
		devc->cur_mqflags &= ~SR_MQFLAG_HOLD;

	/* Temp/aux mode. */
	if (s[7] == '1')
		devc->mode_tempaux = TRUE;
	else
		devc->mode_tempaux = FALSE;

	/*  Continuity mode. */
	if (s[16] == '1')
		devc->mode_continuity = TRUE;
	else
		devc->mode_continuity = FALSE;

	g_free(s);

	return SR_OK;
}

SR_PRIV int agdmm_fetc_send(const struct sr_dev_inst *sdi)
{

	return agdmm_send(sdi, "FETC?");
}

SR_PRIV int agdmm_fetc_recv(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog analog;
	float fvalue;
	char *mstr, *eptr;

	sr_spew("agilent-dmm: FETC reply '%s'", g_match_info_get_string(match));
	devc = sdi->priv;

	if (devc->cur_mq == -1)
		/* Haven't seen configuration yet, so can't know what
		 * the fetched float means. Not really an error, we'll
		 * get metadata soon enough. */
		return SR_OK;

	if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) {
		/* An invalid measurement shows up on the display as "O.L, but
		 * comes through like this. Since comparing 38-digit floats
		 * is rather problematic, we'll cut through this here. */
		fvalue = NAN;
	} else {
		mstr = g_match_info_fetch(match, 1);
		fvalue = strtof(mstr, &eptr);
		g_free(mstr);
		if (fvalue == 0.0 && eptr == mstr) {
			sr_err("agilent-dmm: invalid float");
			return SR_ERR;
		}
		if (devc->cur_divider > 0)
			fvalue /= devc->cur_divider;
	}

	memset(&analog, 0, sizeof(struct sr_datafeed_analog));
	analog.mq = devc->cur_mq;
	analog.unit = devc->cur_unit;
	analog.mqflags = devc->cur_mqflags;
	analog.num_samples = 1;
	analog.data = &fvalue;
	packet.type = SR_DF_ANALOG;
	packet.payload = &analog;
	sr_session_send(devc->cb_data, &packet);

	devc->num_samples++;

	return SR_OK;
}

SR_PRIV int agdmm_conf_send(const struct sr_dev_inst *sdi)
{

	return agdmm_send(sdi, "CONF?");
}

SR_PRIV int agdmm_conf_recv(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
	struct dev_context *devc;
	char *mstr;

	sr_spew("agilent-dmm: CONF? response '%s'",  g_match_info_get_string(match));
	devc = sdi->priv;
	mstr = g_match_info_fetch(match, 1);
	if (!strcmp(mstr, "V")) {
		devc->cur_mq = SR_MQ_VOLTAGE;
		devc->cur_unit = SR_UNIT_VOLT;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
	} else if(!strcmp(mstr, "MV")) {
		if (devc->mode_tempaux) {
			devc->cur_mq = SR_MQ_TEMPERATURE;
			/* No way to detect whether Fahrenheit or Celcius
			 * is used, so we'll just default to Celcius. */
			devc->cur_unit = SR_UNIT_CELSIUS;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
		} else {
			devc->cur_mq = SR_MQ_VOLTAGE;
			devc->cur_unit = SR_UNIT_VOLT;
			devc->cur_mqflags = 0;
			devc->cur_divider = 1000;
		}
	} else if(!strcmp(mstr, "A")) {
		devc->cur_mq = SR_MQ_CURRENT;
		devc->cur_unit = SR_UNIT_AMPERE;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
	} else if(!strcmp(mstr, "UA")) {
		devc->cur_mq = SR_MQ_CURRENT;
		devc->cur_unit = SR_UNIT_AMPERE;
		devc->cur_mqflags = 0;
		devc->cur_divider = 1000000;
	} else if(!strcmp(mstr, "FREQ")) {
		devc->cur_mq = SR_MQ_FREQUENCY;
		devc->cur_unit = SR_UNIT_HERTZ;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
	} else if(!strcmp(mstr, "RES")) {
		if (devc->mode_continuity) {
			devc->cur_mq = SR_MQ_CONTINUITY;
			devc->cur_unit = SR_UNIT_BOOLEAN;
		} else {
			devc->cur_mq = SR_MQ_RESISTANCE;
			devc->cur_unit = SR_UNIT_OHM;
		}
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
	} else if(!strcmp(mstr, "CAP")) {
		devc->cur_mq = SR_MQ_CAPACITANCE;
		devc->cur_unit = SR_UNIT_FARAD;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
	} else if(!strcmp(mstr, "DIOD")) {
		devc->cur_mq = SR_MQ_VOLTAGE;
		devc->cur_unit = SR_UNIT_VOLT;
		devc->cur_mqflags = SR_MQFLAG_DIODE;
		devc->cur_divider = 0;
	} else
		sr_dbg("agilent-dmm: unknown first argument");
	g_free(mstr);

	if (g_match_info_get_match_count(match) == 3) {
		mstr = g_match_info_fetch(match, 1);
		/* Third value, if present, is always AC or DC. */
		if (!strcmp(mstr, "AC"))
			devc->cur_mqflags |= SR_MQFLAG_AC;
		else if (!strcmp(mstr, "DC"))
			devc->cur_mqflags |= SR_MQFLAG_DC;
		else
			sr_dbg("agilent-dmm: unknown third argument");
		g_free(mstr);
	} else
		devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);

	return SR_OK;
}

/* This comes in whenever the rotary switch is changed to a new position.
 * We could use it to determine the major measurement mode, but we already
 * have the output of CONF? for that, which is more detailed. However
 * we do need to catch this here, or it'll show up in some other output. */
SR_PRIV int agdmm_switch_recv(const struct sr_dev_inst *sdi, GMatchInfo *match)
{

	(void)sdi;

	sr_spew("agilent-dmm: switch '%s'",  g_match_info_get_string(match));

	return SR_OK;
}


SR_PRIV const struct agdmm_job u123x_jobs[] = {
	{ 143, agdmm_stat_send },
	{ 1000, agdmm_conf_send },
	{ 143, agdmm_fetc_send },
	{ 0, NULL }
};

SR_PRIV const struct agdmm_recv u123x_recvs[] = {
	{ "^\"(\\d\\d.{18}\\d)\"$", agdmm_stat_recv },
	{ "^\\*([0-9])$", agdmm_switch_recv },
	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", agdmm_fetc_recv },
	{ "^\"(V|MV|A|UA|FREQ),(\\d),(AC|DC)\"$", agdmm_conf_recv },
	{ "^\"(RES|CAP),(\\d)\"$", agdmm_conf_recv },
	{ "^\"(DIOD)\"$", agdmm_conf_recv },
	{ NULL, NULL }
};
Commit	Line	Data
e93cdf42 BV	1	/*
	2	* This file is part of the sigrok 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 "config.h"
	24	#include "agilent-dmm.h"
	25	#include <stdlib.h>
	26	#include <string.h>
	27	#include <errno.h>
	28	#include <math.h>
	29
	30
	31	static void dispatch(const struct sr_dev_inst *sdi)
	32	{
	33	struct dev_context *devc;
	34	const struct agdmm_job *jobs;
	35	int64_t now;
	36	int i;
	37
	38	devc = sdi->priv;
	39	jobs = devc->profile->jobs;
	40	now = g_get_monotonic_time() / 1000;
	41	for (i = 0; (&jobs[i])->interval; i++) {
	42	if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
	43	sr_spew("agilent-dmm: running job %d", i);
	44	(&jobs[i])->send(sdi);
	45	devc->jobqueue[i] = now;
	46	}
	47	}
	48
	49	}
	50
	51	static void receive_line(const struct sr_dev_inst *sdi)
	52	{
	53	struct dev_context *devc;
	54	const struct agdmm_recv recvs, recv;
	55	GRegex *reg;
	56	GMatchInfo *match;
	57	int i;
	58
	59	devc = sdi->priv;
	60
	61	/* Strip CRLF */
	62	while (devc->buflen) {
	63	if (*(devc->buf + devc->buflen - 1) == '\r'
	64	\|\| *(devc->buf + devc->buflen - 1) == '\n')
65	*(devc->buf + --devc->buflen) = '\0';
66	else
67	break;
68	}
69	sr_spew("agilent-dmm: received '%s'", devc->buf);
70
71	recv = NULL;
72	recvs = devc->profile->recvs;
73	for (i = 0; (&recvs[i])->recv_regex; i++) {
74	reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
75	if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
76	recv = &recvs[i];
77	break;
78	}
79	g_match_info_unref(match);
80	g_regex_unref(reg);
81	}
82	if (recv) {
83	recv->recv(sdi, match);
84	g_match_info_unref(match);
85	g_regex_unref(reg);
86	}
87
88	/* Done with this. */
89	devc->buflen = 0;
90
91	}
92
93	SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
94	{
95	const struct sr_dev_inst *sdi;
96	struct dev_context *devc;
97	int len;
98
99	if (!(sdi = cb_data))
100	return TRUE;
101
102	if (!(devc = sdi->priv))
103	return TRUE;
104
105	if (revents == G_IO_IN) {
106	/* Serial data arrived. */
107	len = AGDMM_BUFSIZE - devc->buflen - 1;
108	if (len > 0) {
109	len = serial_read(fd, devc->buf + devc->buflen, len);
110	if (len > 0) {
111	devc->buflen += len;
112	*(devc->buf + devc->buflen) = '\0';
113	if (devc->buflen > 0 && *(devc->buf + devc->buflen - 1) == '\n')
114	/* End of line */
115	receive_line(sdi);
116	}
117	}
118	}
119
120	dispatch(sdi);
121
122	if (devc->num_samples >= devc->limit_samples)
123	sdi->driver->dev_acquisition_stop(sdi, cb_data);
124
125	return TRUE;
126	}
127
128	static int agdmm_send(const struct sr_dev_inst sdi, const char cmd)
129	{
130	struct dev_context *devc;
131	char buf[32];
132
133	devc = sdi->priv;
134	sr_spew("agilent-dmm: sending '%s'", cmd);
135	strncpy(buf, cmd, 28);
136	if (!strncmp(buf, "*IDN?", 5))
137	strncat(buf, "\r\n", 32);
138	else
139	strncat(buf, "\n\r\n", 32);
140	if (serial_write(devc->serial->fd, buf, strlen(buf)) == -1) {
141	sr_err("agilent-dmm: failed to send: %s", strerror(errno));
142	return SR_ERR;
143	}
144
145	return SR_OK;
146	}
147
e93cdf42 BV	148	static int agdmm_stat_send(const struct sr_dev_inst *sdi)
	149	{
	150
	151	return agdmm_send(sdi, "STAT?");
	152	}
	153
	154	static int agdmm_stat_recv(const struct sr_dev_inst sdi, GMatchInfo match)
	155	{
e6b021f3 BV	156	struct dev_context *devc;
	157	char *s;
	158
	159	devc = sdi->priv;
	160	s = g_match_info_fetch(match, 1);
81599cc5	161	sr_spew("agilent-dmm: STAT response '%s'", s);
e6b021f3 BV	162
	163	/* Max, Min or Avg mode -- no way to tell which, so we'll
	164	* set both flags to denote it's not a normal measurement. */
	165	if (s[0] == '1')
	166	devc->cur_mqflags \|= SR_MQFLAG_MAX \| SR_MQFLAG_MIN;
	167	else
	168	devc->cur_mqflags &= ~(SR_MQFLAG_MAX \| SR_MQFLAG_MIN);
e93cdf42	169
e6b021f3 BV	170	if (s[1] == '1')
	171	devc->cur_mqflags \|= SR_MQFLAG_RELATIVE;
	172	else
	173	devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
	174
	175	/* Triggered or auto hold modes. */
	176	if (s[2] == '1' \|\| s[3] == '1')
	177	devc->cur_mqflags \|= SR_MQFLAG_HOLD;
	178	else
	179	devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
	180
	181	/* Temp/aux mode. */
	182	if (s[7] == '1')
	183	devc->mode_tempaux = TRUE;
	184	else
	185	devc->mode_tempaux = FALSE;
	186
	187	/* Continuity mode. */
	188	if (s[16] == '1')
	189	devc->mode_continuity = TRUE;
	190	else
	191	devc->mode_continuity = FALSE;
	192
	193	g_free(s);
e93cdf42 BV	194
	195	return SR_OK;
	196	}
	197
	198	SR_PRIV int agdmm_fetc_send(const struct sr_dev_inst *sdi)
	199	{
	200
	201	return agdmm_send(sdi, "FETC?");
	202	}
	203
	204	SR_PRIV int agdmm_fetc_recv(const struct sr_dev_inst sdi, GMatchInfo match)
	205	{
	206	struct dev_context *devc;
	207	struct sr_datafeed_packet packet;
	208	struct sr_datafeed_analog analog;
	209	float fvalue;
	210	char mstr, eptr;
	211
	212	sr_spew("agilent-dmm: FETC reply '%s'", g_match_info_get_string(match));
	213	devc = sdi->priv;
	214
	215	if (devc->cur_mq == -1)
	216	/* Haven't seen configuration yet, so can't know what
	217	* the fetched float means. Not really an error, we'll
	218	* get metadata soon enough. */
	219	return SR_OK;
	220
	221	if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) {
	222	/* An invalid measurement shows up on the display as "O.L, but
	223	* comes through like this. Since comparing 38-digit floats
	224	* is rather problematic, we'll cut through this here. */
	225	fvalue = NAN;
	226	} else {
	227	mstr = g_match_info_fetch(match, 1);
	228	fvalue = strtof(mstr, &eptr);
	229	g_free(mstr);
	230	if (fvalue == 0.0 && eptr == mstr) {
	231	sr_err("agilent-dmm: invalid float");
	232	return SR_ERR;
	233	}
	234	if (devc->cur_divider > 0)
	235	fvalue /= devc->cur_divider;
	236	}
	237
	238	memset(&analog, 0, sizeof(struct sr_datafeed_analog));
	239	analog.mq = devc->cur_mq;
e6b021f3 BV	240	analog.unit = devc->cur_unit;
e6b021f3 BV	241	analog.mqflags = devc->cur_mqflags;
e93cdf42 BV	242	analog.num_samples = 1;
	243	analog.data = &fvalue;
	244	packet.type = SR_DF_ANALOG;
	245	packet.payload = &analog;
	246	sr_session_send(devc->cb_data, &packet);
	247
	248	devc->num_samples++;
	249
	250	return SR_OK;
	251	}
	252
	253	SR_PRIV int agdmm_conf_send(const struct sr_dev_inst *sdi)
	254	{
	255
	256	return agdmm_send(sdi, "CONF?");
	257	}
	258
	259	SR_PRIV int agdmm_conf_recv(const struct sr_dev_inst sdi, GMatchInfo match)
	260	{
	261	struct dev_context *devc;
	262	char *mstr;
	263
81599cc5	264	sr_spew("agilent-dmm: CONF? response '%s'", g_match_info_get_string(match));
e93cdf42 BV	265	devc = sdi->priv;
	266	mstr = g_match_info_fetch(match, 1);
	267	if (!strcmp(mstr, "V")) {
	268	devc->cur_mq = SR_MQ_VOLTAGE;
e6b021f3 BV	269	devc->cur_unit = SR_UNIT_VOLT;
e6b021f3 BV	270	devc->cur_mqflags = 0;
e93cdf42 BV	271	devc->cur_divider = 0;
e93cdf42 BV	272	} else if(!strcmp(mstr, "MV")) {
e6b021f3 BV	273	if (devc->mode_tempaux) {
	274	devc->cur_mq = SR_MQ_TEMPERATURE;
	275	/* No way to detect whether Fahrenheit or Celcius
	276	* is used, so we'll just default to Celcius. */
	277	devc->cur_unit = SR_UNIT_CELSIUS;
	278	devc->cur_mqflags = 0;
	279	devc->cur_divider = 0;
	280	} else {
	281	devc->cur_mq = SR_MQ_VOLTAGE;
	282	devc->cur_unit = SR_UNIT_VOLT;
	283	devc->cur_mqflags = 0;
	284	devc->cur_divider = 1000;
	285	}
e93cdf42 BV	286	} else if(!strcmp(mstr, "A")) {
e93cdf42 BV	287	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	288	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	289	devc->cur_mqflags = 0;
e93cdf42 BV	290	devc->cur_divider = 0;
	291	} else if(!strcmp(mstr, "UA")) {
	292	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	293	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	294	devc->cur_mqflags = 0;
e93cdf42 BV	295	devc->cur_divider = 1000000;
	296	} else if(!strcmp(mstr, "FREQ")) {
	297	devc->cur_mq = SR_MQ_FREQUENCY;
e6b021f3 BV	298	devc->cur_unit = SR_UNIT_HERTZ;
e6b021f3 BV	299	devc->cur_mqflags = 0;
e93cdf42 BV	300	devc->cur_divider = 0;
e93cdf42 BV	301	} else if(!strcmp(mstr, "RES")) {
e6b021f3 BV	302	if (devc->mode_continuity) {
	303	devc->cur_mq = SR_MQ_CONTINUITY;
	304	devc->cur_unit = SR_UNIT_BOOLEAN;
	305	} else {
	306	devc->cur_mq = SR_MQ_RESISTANCE;
	307	devc->cur_unit = SR_UNIT_OHM;
	308	}
	309	devc->cur_mqflags = 0;
e93cdf42 BV	310	devc->cur_divider = 0;
	311	} else if(!strcmp(mstr, "CAP")) {
	312	devc->cur_mq = SR_MQ_CAPACITANCE;
e6b021f3 BV	313	devc->cur_unit = SR_UNIT_FARAD;
e6b021f3 BV	314	devc->cur_mqflags = 0;
e93cdf42 BV	315	devc->cur_divider = 0;
	316	} else if(!strcmp(mstr, "DIOD")) {
	317	devc->cur_mq = SR_MQ_VOLTAGE;
e6b021f3 BV	318	devc->cur_unit = SR_UNIT_VOLT;
e6b021f3 BV	319	devc->cur_mqflags = SR_MQFLAG_DIODE;
e93cdf42 BV	320	devc->cur_divider = 0;
	321	} else
	322	sr_dbg("agilent-dmm: unknown first argument");
	323	g_free(mstr);
	324
	325	if (g_match_info_get_match_count(match) == 3) {
	326	mstr = g_match_info_fetch(match, 1);
	327	/* Third value, if present, is always AC or DC. */
	328	if (!strcmp(mstr, "AC"))
e6b021f3	329	devc->cur_mqflags \|= SR_MQFLAG_AC;
e93cdf42	330	else if (!strcmp(mstr, "DC"))
e6b021f3	331	devc->cur_mqflags \|= SR_MQFLAG_DC;
e93cdf42 BV	332	else
	333	sr_dbg("agilent-dmm: unknown third argument");
	334	g_free(mstr);
e6b021f3 BV	335	} else
e6b021f3 BV	336	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
e93cdf42 BV	337
	338	return SR_OK;
	339	}
	340
81599cc5 BV	341	/* This comes in whenever the rotary switch is changed to a new position.
	342	* We could use it to determine the major measurement mode, but we already
	343	* have the output of CONF? for that, which is more detailed. However
	344	* we do need to catch this here, or it'll show up in some other output. */
e93cdf42 BV	345	SR_PRIV int agdmm_switch_recv(const struct sr_dev_inst sdi, GMatchInfo match)
	346	{
	347
	348	(void)sdi;
	349
81599cc5	350	sr_spew("agilent-dmm: switch '%s'", g_match_info_get_string(match));
e93cdf42 BV	351
	352	return SR_OK;
	353	}
	354
	355
	356	SR_PRIV const struct agdmm_job u123x_jobs[] = {
e93cdf42 BV	357	{ 143, agdmm_stat_send },
	358	{ 1000, agdmm_conf_send },
	359	{ 143, agdmm_fetc_send },
	360	{ 0, NULL }
	361	};
	362
	363	SR_PRIV const struct agdmm_recv u123x_recvs[] = {
	364	{ "^\"(\\d\\d.{18}\\d)\"$", agdmm_stat_recv },
	365	{ "^\\*([0-9])$", agdmm_switch_recv },
	366	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", agdmm_fetc_recv },
	367	{ "^\"(V\|MV\|A\|UA\|FREQ),(\\d),(AC\|DC)\"$", agdmm_conf_recv },
	368	{ "^\"(RES\|CAP),(\\d)\"$", agdmm_conf_recv },
	369	{ "^\"(DIOD)\"$", agdmm_conf_recv },
	370	{ NULL, NULL }
	371	};
	372
	373