[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 "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);
	} else
		sr_dbg("agilent-dmm: unknown line '%s'", devc->buf);

	/* 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. */
		while(AGDMM_BUFSIZE - devc->buflen - 1 > 0) {
			len = serial_read(fd, devc->buf + devc->buflen, 1);
			if (len < 1)
				break;
			devc->buflen += len;
			*(devc->buf + devc->buflen) = '\0';
			if (*(devc->buf + devc->buflen - 1) == '\n') {
				/* End of line */
				receive_line(sdi);
				break;
			}
		}
	}

	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 send_stat(const struct sr_dev_inst *sdi)
{

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

static int recv_stat_u123x(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;
}

static int recv_stat_u125x(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);

	/* Peak hold mode. */
	if (s[4] == '1')
		devc->cur_mqflags |= SR_MQFLAG_MAX;
	else
		devc->cur_mqflags &= ~SR_MQFLAG_MAX;

	/* Triggered hold mode. */
	if (s[7] == '1')
		devc->cur_mqflags |= SR_MQFLAG_HOLD;
	else
		devc->cur_mqflags &= ~SR_MQFLAG_HOLD;

	g_free(s);

	return SR_OK;
}

static int send_fetc(const struct sr_dev_inst *sdi)
{

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

static int recv_fetc(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;
}

static int send_conf(const struct sr_dev_inst *sdi)
{

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

static int recv_conf_u123x(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
		sr_dbg("agilent-dmm: unknown first argument");
	g_free(mstr);

	if (g_match_info_get_match_count(match) == 4) {
		mstr = g_match_info_fetch(match, 3);
		/* 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;
}

static int recv_conf_u125x(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 (!strncmp(mstr, "VOLT", 4)) {
		devc->cur_mq = SR_MQ_VOLTAGE;
		devc->cur_unit = SR_UNIT_VOLT;
		devc->cur_mqflags = 0;
		devc->cur_divider = 0;
		if (mstr[4] == ':') {
			if (!strcmp(mstr + 4, "AC"))
				devc->cur_mqflags |= SR_MQFLAG_AC;
			else if (!strcmp(mstr + 4, "DC"))
				devc->cur_mqflags |= SR_MQFLAG_DC;
			else
				/* "ACDC" appears as well, no idea what it means. */
				devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
		} else
			devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
	} else if(!strcmp(mstr, "CURR")) {
		devc->cur_mq = SR_MQ_CURRENT;
		devc->cur_unit = SR_UNIT_AMPERE;
		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
		sr_dbg("agilent-dmm: unknown first argument");
	g_free(mstr);


	return SR_OK;
}

/* At least the 123x and 125x appear to have this. */
static int recv_conf(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, "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 single argument");
	g_free(mstr);

	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. */
static int recv_switch(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 agdmm_jobs_u123x[] = {
	{ 143, send_stat },
	{ 1000, send_conf },
	{ 143, send_fetc },
	{ 0, NULL }
};

SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = {
	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x },
	{ "^\\*([0-9])$", recv_switch },
	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	{ "^\"(V|MV|A|UA|FREQ),(\\d),(AC|DC)\"$", recv_conf_u123x },
	{ "^\"(RES|CAP),(\\d)\"$", recv_conf_u123x},
	{ "^\"(DIOD)\"$", recv_conf },
	{ NULL, NULL }
};

SR_PRIV const struct agdmm_job agdmm_jobs_u125x[] = {
	{ 143, send_stat },
	{ 1000, send_conf },
	{ 143, send_fetc },
	{ 0, NULL }
};

SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = {
	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x },
	{ "^\\*([0-9])$", recv_switch },
	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	{ "^(VOLT|CURR|RES|CAP) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	{ "^(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	{ "^\"(DIOD)\"$", recv_conf },
	{ 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"
e93cdf42 BV	23	#include "agilent-dmm.h"
	24	#include <stdlib.h>
	25	#include <string.h>
	26	#include <errno.h>
	27	#include <math.h>
	28
	29
	30	static void dispatch(const struct sr_dev_inst *sdi)
	31	{
	32	struct dev_context *devc;
	33	const struct agdmm_job *jobs;
	34	int64_t now;
	35	int i;
	36
	37	devc = sdi->priv;
	38	jobs = devc->profile->jobs;
	39	now = g_get_monotonic_time() / 1000;
	40	for (i = 0; (&jobs[i])->interval; i++) {
	41	if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
	42	sr_spew("agilent-dmm: running job %d", i);
	43	(&jobs[i])->send(sdi);
	44	devc->jobqueue[i] = now;
	45	}
	46	}
	47
	48	}
	49
	50	static void receive_line(const struct sr_dev_inst *sdi)
	51	{
	52	struct dev_context *devc;
	53	const struct agdmm_recv recvs, recv;
	54	GRegex *reg;
	55	GMatchInfo *match;
	56	int i;
	57
	58	devc = sdi->priv;
	59
	60	/* Strip CRLF */
	61	while (devc->buflen) {
	62	if (*(devc->buf + devc->buflen - 1) == '\r'
	63	\|\| *(devc->buf + devc->buflen - 1) == '\n')
	64	*(devc->buf + --devc->buflen) = '\0';
	65	else
	66	break;
	67	}
	68	sr_spew("agilent-dmm: received '%s'", devc->buf);
	69
	70	recv = NULL;
	71	recvs = devc->profile->recvs;
	72	for (i = 0; (&recvs[i])->recv_regex; i++) {
	73	reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
	74	if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
	75	recv = &recvs[i];
	76	break;
	77	}
	78	g_match_info_unref(match);
	79	g_regex_unref(reg);
	80	}
	81	if (recv) {
	82	recv->recv(sdi, match);
	83	g_match_info_unref(match);
	84	g_regex_unref(reg);
f2e86bbf BV	85	} else
f2e86bbf BV	86	sr_dbg("agilent-dmm: unknown line '%s'", devc->buf);
e93cdf42 BV	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. */
f2e86bbf BV	107	while(AGDMM_BUFSIZE - devc->buflen - 1 > 0) {
	108	len = serial_read(fd, devc->buf + devc->buflen, 1);
	109	if (len < 1)
	110	break;
	111	devc->buflen += len;
	112	*(devc->buf + devc->buflen) = '\0';
	113	if (*(devc->buf + devc->buflen - 1) == '\n') {
	114	/* End of line */
	115	receive_line(sdi);
	116	break;
e93cdf42 BV	117	}
	118	}
	119	}
	120
	121	dispatch(sdi);
	122
	123	if (devc->num_samples >= devc->limit_samples)
	124	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	125
	126	return TRUE;
	127	}
	128
	129	static int agdmm_send(const struct sr_dev_inst sdi, const char cmd)
	130	{
	131	struct dev_context *devc;
	132	char buf[32];
	133
	134	devc = sdi->priv;
	135	sr_spew("agilent-dmm: sending '%s'", cmd);
	136	strncpy(buf, cmd, 28);
	137	if (!strncmp(buf, "*IDN?", 5))
	138	strncat(buf, "\r\n", 32);
	139	else
	140	strncat(buf, "\n\r\n", 32);
	141	if (serial_write(devc->serial->fd, buf, strlen(buf)) == -1) {
	142	sr_err("agilent-dmm: failed to send: %s", strerror(errno));
	143	return SR_ERR;
	144	}
	145
	146	return SR_OK;
	147	}
	148
a4394fb3	149	static int send_stat(const struct sr_dev_inst *sdi)
e93cdf42 BV	150	{
	151
	152	return agdmm_send(sdi, "STAT?");
	153	}
	154
8c0152f2	155	static int recv_stat_u123x(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42	156	{
e6b021f3 BV	157	struct dev_context *devc;
	158	char *s;
	159
	160	devc = sdi->priv;
	161	s = g_match_info_fetch(match, 1);
81599cc5	162	sr_spew("agilent-dmm: STAT response '%s'", s);
e6b021f3 BV	163
	164	/* Max, Min or Avg mode -- no way to tell which, so we'll
	165	* set both flags to denote it's not a normal measurement. */
	166	if (s[0] == '1')
	167	devc->cur_mqflags \|= SR_MQFLAG_MAX \| SR_MQFLAG_MIN;
	168	else
	169	devc->cur_mqflags &= ~(SR_MQFLAG_MAX \| SR_MQFLAG_MIN);
e93cdf42	170
e6b021f3 BV	171	if (s[1] == '1')
	172	devc->cur_mqflags \|= SR_MQFLAG_RELATIVE;
	173	else
	174	devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
	175
	176	/* Triggered or auto hold modes. */
	177	if (s[2] == '1' \|\| s[3] == '1')
	178	devc->cur_mqflags \|= SR_MQFLAG_HOLD;
	179	else
	180	devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
	181
	182	/* Temp/aux mode. */
	183	if (s[7] == '1')
	184	devc->mode_tempaux = TRUE;
	185	else
	186	devc->mode_tempaux = FALSE;
	187
	188	/* Continuity mode. */
	189	if (s[16] == '1')
	190	devc->mode_continuity = TRUE;
	191	else
	192	devc->mode_continuity = FALSE;
	193
	194	g_free(s);
e93cdf42 BV	195
	196	return SR_OK;
	197	}
	198
8c0152f2 BV	199	static int recv_stat_u125x(const struct sr_dev_inst sdi, GMatchInfo match)
	200	{
	201	struct dev_context *devc;
	202	char *s;
	203
	204	devc = sdi->priv;
	205	s = g_match_info_fetch(match, 1);
	206	sr_spew("agilent-dmm: STAT response '%s'", s);
	207
	208	/* Peak hold mode. */
	209	if (s[4] == '1')
	210	devc->cur_mqflags \|= SR_MQFLAG_MAX;
	211	else
	212	devc->cur_mqflags &= ~SR_MQFLAG_MAX;
	213
	214	/* Triggered hold mode. */
	215	if (s[7] == '1')
	216	devc->cur_mqflags \|= SR_MQFLAG_HOLD;
	217	else
	218	devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
	219
	220	g_free(s);
	221
	222	return SR_OK;
	223	}
	224
a4394fb3	225	static int send_fetc(const struct sr_dev_inst *sdi)
e93cdf42 BV	226	{
	227
	228	return agdmm_send(sdi, "FETC?");
	229	}
	230
a4394fb3	231	static int recv_fetc(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42 BV	232	{
	233	struct dev_context *devc;
	234	struct sr_datafeed_packet packet;
	235	struct sr_datafeed_analog analog;
	236	float fvalue;
	237	char mstr, eptr;
	238
	239	sr_spew("agilent-dmm: FETC reply '%s'", g_match_info_get_string(match));
	240	devc = sdi->priv;
	241
	242	if (devc->cur_mq == -1)
	243	/* Haven't seen configuration yet, so can't know what
	244	* the fetched float means. Not really an error, we'll
	245	* get metadata soon enough. */
	246	return SR_OK;
	247
	248	if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) {
	249	/* An invalid measurement shows up on the display as "O.L, but
	250	* comes through like this. Since comparing 38-digit floats
	251	* is rather problematic, we'll cut through this here. */
	252	fvalue = NAN;
	253	} else {
	254	mstr = g_match_info_fetch(match, 1);
	255	fvalue = strtof(mstr, &eptr);
	256	g_free(mstr);
	257	if (fvalue == 0.0 && eptr == mstr) {
	258	sr_err("agilent-dmm: invalid float");
	259	return SR_ERR;
	260	}
	261	if (devc->cur_divider > 0)
	262	fvalue /= devc->cur_divider;
	263	}
	264
	265	memset(&analog, 0, sizeof(struct sr_datafeed_analog));
	266	analog.mq = devc->cur_mq;
e6b021f3 BV	267	analog.unit = devc->cur_unit;
e6b021f3 BV	268	analog.mqflags = devc->cur_mqflags;
e93cdf42 BV	269	analog.num_samples = 1;
	270	analog.data = &fvalue;
	271	packet.type = SR_DF_ANALOG;
	272	packet.payload = &analog;
	273	sr_session_send(devc->cb_data, &packet);
	274
	275	devc->num_samples++;
	276
	277	return SR_OK;
	278	}
	279
a4394fb3	280	static int send_conf(const struct sr_dev_inst *sdi)
e93cdf42 BV	281	{
	282
	283	return agdmm_send(sdi, "CONF?");
	284	}
	285
a4394fb3	286	static int recv_conf_u123x(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42 BV	287	{
	288	struct dev_context *devc;
	289	char *mstr;
	290
81599cc5	291	sr_spew("agilent-dmm: CONF? response '%s'", g_match_info_get_string(match));
e93cdf42 BV	292	devc = sdi->priv;
	293	mstr = g_match_info_fetch(match, 1);
	294	if (!strcmp(mstr, "V")) {
	295	devc->cur_mq = SR_MQ_VOLTAGE;
e6b021f3 BV	296	devc->cur_unit = SR_UNIT_VOLT;
e6b021f3 BV	297	devc->cur_mqflags = 0;
e93cdf42 BV	298	devc->cur_divider = 0;
e93cdf42 BV	299	} else if(!strcmp(mstr, "MV")) {
e6b021f3 BV	300	if (devc->mode_tempaux) {
	301	devc->cur_mq = SR_MQ_TEMPERATURE;
	302	/* No way to detect whether Fahrenheit or Celcius
	303	* is used, so we'll just default to Celcius. */
	304	devc->cur_unit = SR_UNIT_CELSIUS;
	305	devc->cur_mqflags = 0;
	306	devc->cur_divider = 0;
	307	} else {
	308	devc->cur_mq = SR_MQ_VOLTAGE;
	309	devc->cur_unit = SR_UNIT_VOLT;
	310	devc->cur_mqflags = 0;
	311	devc->cur_divider = 1000;
	312	}
e93cdf42 BV	313	} else if(!strcmp(mstr, "A")) {
e93cdf42 BV	314	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	315	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	316	devc->cur_mqflags = 0;
e93cdf42 BV	317	devc->cur_divider = 0;
	318	} else if(!strcmp(mstr, "UA")) {
	319	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	320	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	321	devc->cur_mqflags = 0;
e93cdf42 BV	322	devc->cur_divider = 1000000;
	323	} else if(!strcmp(mstr, "FREQ")) {
	324	devc->cur_mq = SR_MQ_FREQUENCY;
e6b021f3 BV	325	devc->cur_unit = SR_UNIT_HERTZ;
e6b021f3 BV	326	devc->cur_mqflags = 0;
e93cdf42 BV	327	devc->cur_divider = 0;
e93cdf42 BV	328	} else if(!strcmp(mstr, "RES")) {
e6b021f3 BV	329	if (devc->mode_continuity) {
	330	devc->cur_mq = SR_MQ_CONTINUITY;
	331	devc->cur_unit = SR_UNIT_BOOLEAN;
	332	} else {
	333	devc->cur_mq = SR_MQ_RESISTANCE;
	334	devc->cur_unit = SR_UNIT_OHM;
	335	}
	336	devc->cur_mqflags = 0;
e93cdf42 BV	337	devc->cur_divider = 0;
	338	} else if(!strcmp(mstr, "CAP")) {
	339	devc->cur_mq = SR_MQ_CAPACITANCE;
e6b021f3 BV	340	devc->cur_unit = SR_UNIT_FARAD;
e6b021f3 BV	341	devc->cur_mqflags = 0;
e93cdf42	342	devc->cur_divider = 0;
e93cdf42 BV	343	} else
	344	sr_dbg("agilent-dmm: unknown first argument");
	345	g_free(mstr);
	346
e066c32a BV	347	if (g_match_info_get_match_count(match) == 4) {
e066c32a BV	348	mstr = g_match_info_fetch(match, 3);
e93cdf42 BV	349	/* Third value, if present, is always AC or DC. */
e93cdf42 BV	350	if (!strcmp(mstr, "AC"))
e6b021f3	351	devc->cur_mqflags \|= SR_MQFLAG_AC;
e93cdf42	352	else if (!strcmp(mstr, "DC"))
e6b021f3	353	devc->cur_mqflags \|= SR_MQFLAG_DC;
e93cdf42 BV	354	else
	355	sr_dbg("agilent-dmm: unknown third argument");
	356	g_free(mstr);
e6b021f3 BV	357	} else
e6b021f3 BV	358	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
e93cdf42 BV	359
	360	return SR_OK;
	361	}
	362
8c0152f2 BV	363	static int recv_conf_u125x(const struct sr_dev_inst sdi, GMatchInfo match)
	364	{
	365	struct dev_context *devc;
	366	char *mstr;
	367
	368	sr_spew("agilent-dmm: CONF? response '%s'", g_match_info_get_string(match));
	369	devc = sdi->priv;
	370	mstr = g_match_info_fetch(match, 1);
	371	if (!strncmp(mstr, "VOLT", 4)) {
	372	devc->cur_mq = SR_MQ_VOLTAGE;
	373	devc->cur_unit = SR_UNIT_VOLT;
	374	devc->cur_mqflags = 0;
	375	devc->cur_divider = 0;
	376	if (mstr[4] == ':') {
	377	if (!strcmp(mstr + 4, "AC"))
	378	devc->cur_mqflags \|= SR_MQFLAG_AC;
	379	else if (!strcmp(mstr + 4, "DC"))
	380	devc->cur_mqflags \|= SR_MQFLAG_DC;
	381	else
	382	/* "ACDC" appears as well, no idea what it means. */
	383	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
	384	} else
	385	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
	386	} else if(!strcmp(mstr, "CURR")) {
	387	devc->cur_mq = SR_MQ_CURRENT;
	388	devc->cur_unit = SR_UNIT_AMPERE;
	389	devc->cur_mqflags = 0;
	390	devc->cur_divider = 0;
	391	} else if(!strcmp(mstr, "RES")) {
	392	if (devc->mode_continuity) {
	393	devc->cur_mq = SR_MQ_CONTINUITY;
	394	devc->cur_unit = SR_UNIT_BOOLEAN;
	395	} else {
	396	devc->cur_mq = SR_MQ_RESISTANCE;
	397	devc->cur_unit = SR_UNIT_OHM;
	398	}
	399	devc->cur_mqflags = 0;
	400	devc->cur_divider = 0;
	401	} else
	402	sr_dbg("agilent-dmm: unknown first argument");
	403	g_free(mstr);
	404
	405
	406	return SR_OK;
	407	}
	408
a4394fb3 BV	409	/* At least the 123x and 125x appear to have this. */
	410	static int recv_conf(const struct sr_dev_inst sdi, GMatchInfo match)
	411	{
	412	struct dev_context *devc;
	413	char *mstr;
	414
	415	sr_spew("agilent-dmm: CONF? response '%s'", g_match_info_get_string(match));
	416	devc = sdi->priv;
	417	mstr = g_match_info_fetch(match, 1);
	418	if(!strcmp(mstr, "DIOD")) {
	419	devc->cur_mq = SR_MQ_VOLTAGE;
	420	devc->cur_unit = SR_UNIT_VOLT;
	421	devc->cur_mqflags = SR_MQFLAG_DIODE;
	422	devc->cur_divider = 0;
8c0152f2 BV	423	} else
8c0152f2 BV	424	sr_dbg("agilent-dmm: unknown single argument");
a4394fb3 BV	425	g_free(mstr);
	426
	427	return SR_OK;
	428	}
	429
81599cc5 BV	430	/* This comes in whenever the rotary switch is changed to a new position.
	431	* We could use it to determine the major measurement mode, but we already
	432	* have the output of CONF? for that, which is more detailed. However
	433	* we do need to catch this here, or it'll show up in some other output. */
a4394fb3	434	static int recv_switch(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42 BV	435	{
	436
	437	(void)sdi;
	438
81599cc5	439	sr_spew("agilent-dmm: switch '%s'", g_match_info_get_string(match));
e93cdf42 BV	440
	441	return SR_OK;
	442	}
	443
	444
8c0152f2	445	SR_PRIV const struct agdmm_job agdmm_jobs_u123x[] = {
a4394fb3 BV	446	{ 143, send_stat },
	447	{ 1000, send_conf },
	448	{ 143, send_fetc },
e93cdf42 BV	449	{ 0, NULL }
	450	};
	451
8c0152f2 BV	452	SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = {
8c0152f2 BV	453	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x },
a4394fb3 BV	454	{ "^\\*([0-9])$", recv_switch },
	455	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	456	{ "^\"(V\|MV\|A\|UA\|FREQ),(\\d),(AC\|DC)\"$", recv_conf_u123x },
	457	{ "^\"(RES\|CAP),(\\d)\"$", recv_conf_u123x},
	458	{ "^\"(DIOD)\"$", recv_conf },
e93cdf42 BV	459	{ NULL, NULL }
	460	};
	461
8c0152f2 BV	462	SR_PRIV const struct agdmm_job agdmm_jobs_u125x[] = {
	463	{ 143, send_stat },
	464	{ 1000, send_conf },
	465	{ 143, send_fetc },
	466	{ 0, NULL }
	467	};
	468
	469	SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = {
	470	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x },
	471	{ "^\\*([0-9])$", recv_switch },
	472	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	473	{ "^(VOLT\|CURR\|RES\|CAP) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	474	{ "^(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	475	{ "^\"(DIOD)\"$", recv_conf },
	476	{ NULL, NULL }
	477	};
	478
e93cdf42	479