[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("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("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("Unknown line '%s'.", devc->buf);

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

SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
{
	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("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("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("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("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("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("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("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("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("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("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("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("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("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("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
e93cdf42 BV	29	static void dispatch(const struct sr_dev_inst *sdi)
	30	{
	31	struct dev_context *devc;
	32	const struct agdmm_job *jobs;
	33	int64_t now;
	34	int i;
	35
	36	devc = sdi->priv;
	37	jobs = devc->profile->jobs;
	38	now = g_get_monotonic_time() / 1000;
	39	for (i = 0; (&jobs[i])->interval; i++) {
	40	if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
38d326e8	41	sr_spew("Running job %d.", i);
e93cdf42 BV	42	(&jobs[i])->send(sdi);
	43	devc->jobqueue[i] = now;
	44	}
	45	}
e93cdf42 BV	46	}
	47
	48	static void receive_line(const struct sr_dev_inst *sdi)
	49	{
	50	struct dev_context *devc;
	51	const struct agdmm_recv recvs, recv;
	52	GRegex *reg;
	53	GMatchInfo *match;
	54	int i;
	55
	56	devc = sdi->priv;
	57
	58	/* Strip CRLF */
	59	while (devc->buflen) {
	60	if (*(devc->buf + devc->buflen - 1) == '\r'
	61	\|\| *(devc->buf + devc->buflen - 1) == '\n')
	62	*(devc->buf + --devc->buflen) = '\0';
	63	else
	64	break;
	65	}
38d326e8	66	sr_spew("Received '%s'.", devc->buf);
e93cdf42 BV	67
	68	recv = NULL;
	69	recvs = devc->profile->recvs;
	70	for (i = 0; (&recvs[i])->recv_regex; i++) {
	71	reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
	72	if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
	73	recv = &recvs[i];
	74	break;
	75	}
	76	g_match_info_unref(match);
	77	g_regex_unref(reg);
	78	}
	79	if (recv) {
	80	recv->recv(sdi, match);
	81	g_match_info_unref(match);
	82	g_regex_unref(reg);
f2e86bbf	83	} else
38d326e8	84	sr_dbg("Unknown line '%s'.", devc->buf);
e93cdf42 BV	85
	86	/* Done with this. */
	87	devc->buflen = 0;
e93cdf42 BV	88	}
	89
	90	SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
	91	{
642e9d62	92	struct sr_dev_inst *sdi;
e93cdf42 BV	93	struct dev_context *devc;
	94	int len;
	95
	96	if (!(sdi = cb_data))
	97	return TRUE;
	98
	99	if (!(devc = sdi->priv))
	100	return TRUE;
	101
	102	if (revents == G_IO_IN) {
	103	/* Serial data arrived. */
f2e86bbf BV	104	while(AGDMM_BUFSIZE - devc->buflen - 1 > 0) {
	105	len = serial_read(fd, devc->buf + devc->buflen, 1);
	106	if (len < 1)
	107	break;
	108	devc->buflen += len;
	109	*(devc->buf + devc->buflen) = '\0';
	110	if (*(devc->buf + devc->buflen - 1) == '\n') {
	111	/* End of line */
	112	receive_line(sdi);
	113	break;
e93cdf42 BV	114	}
	115	}
	116	}
	117
	118	dispatch(sdi);
	119
	120	if (devc->num_samples >= devc->limit_samples)
	121	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	122
	123	return TRUE;
	124	}
	125
	126	static int agdmm_send(const struct sr_dev_inst sdi, const char cmd)
	127	{
	128	struct dev_context *devc;
	129	char buf[32];
	130
	131	devc = sdi->priv;
38d326e8	132	sr_spew("Sending '%s'.", cmd);
e93cdf42 BV	133	strncpy(buf, cmd, 28);
	134	if (!strncmp(buf, "*IDN?", 5))
	135	strncat(buf, "\r\n", 32);
	136	else
	137	strncat(buf, "\n\r\n", 32);
	138	if (serial_write(devc->serial->fd, buf, strlen(buf)) == -1) {
38d326e8	139	sr_err("Failed to send: %s.", strerror(errno));
e93cdf42 BV	140	return SR_ERR;
	141	}
	142
	143	return SR_OK;
	144	}
	145
a4394fb3	146	static int send_stat(const struct sr_dev_inst *sdi)
e93cdf42	147	{
e93cdf42 BV	148	return agdmm_send(sdi, "STAT?");
	149	}
	150
8c0152f2	151	static int recv_stat_u123x(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42	152	{
e6b021f3 BV	153	struct dev_context *devc;
	154	char *s;
	155
	156	devc = sdi->priv;
	157	s = g_match_info_fetch(match, 1);
38d326e8	158	sr_spew("STAT response '%s'.", s);
e6b021f3 BV	159
	160	/* Max, Min or Avg mode -- no way to tell which, so we'll
	161	* set both flags to denote it's not a normal measurement. */
	162	if (s[0] == '1')
	163	devc->cur_mqflags \|= SR_MQFLAG_MAX \| SR_MQFLAG_MIN;
	164	else
	165	devc->cur_mqflags &= ~(SR_MQFLAG_MAX \| SR_MQFLAG_MIN);
e93cdf42	166
e6b021f3 BV	167	if (s[1] == '1')
	168	devc->cur_mqflags \|= SR_MQFLAG_RELATIVE;
	169	else
	170	devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
	171
	172	/* Triggered or auto hold modes. */
	173	if (s[2] == '1' \|\| s[3] == '1')
	174	devc->cur_mqflags \|= SR_MQFLAG_HOLD;
	175	else
	176	devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
	177
	178	/* Temp/aux mode. */
	179	if (s[7] == '1')
	180	devc->mode_tempaux = TRUE;
	181	else
	182	devc->mode_tempaux = FALSE;
	183
38d326e8	184	/* Continuity mode. */
e6b021f3 BV	185	if (s[16] == '1')
	186	devc->mode_continuity = TRUE;
	187	else
	188	devc->mode_continuity = FALSE;
	189
	190	g_free(s);
e93cdf42 BV	191
	192	return SR_OK;
	193	}
	194
8c0152f2 BV	195	static int recv_stat_u125x(const struct sr_dev_inst sdi, GMatchInfo match)
	196	{
	197	struct dev_context *devc;
	198	char *s;
	199
	200	devc = sdi->priv;
	201	s = g_match_info_fetch(match, 1);
38d326e8	202	sr_spew("STAT response '%s'.", s);
8c0152f2 BV	203
	204	/* Peak hold mode. */
	205	if (s[4] == '1')
	206	devc->cur_mqflags \|= SR_MQFLAG_MAX;
	207	else
	208	devc->cur_mqflags &= ~SR_MQFLAG_MAX;
	209
	210	/* Triggered hold mode. */
	211	if (s[7] == '1')
	212	devc->cur_mqflags \|= SR_MQFLAG_HOLD;
	213	else
	214	devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
	215
	216	g_free(s);
	217
	218	return SR_OK;
	219	}
	220
a4394fb3	221	static int send_fetc(const struct sr_dev_inst *sdi)
e93cdf42	222	{
e93cdf42 BV	223	return agdmm_send(sdi, "FETC?");
	224	}
	225
a4394fb3	226	static int recv_fetc(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42 BV	227	{
	228	struct dev_context *devc;
	229	struct sr_datafeed_packet packet;
	230	struct sr_datafeed_analog analog;
	231	float fvalue;
	232	char mstr, eptr;
	233
38d326e8	234	sr_spew("FETC reply '%s'.", g_match_info_get_string(match));
e93cdf42 BV	235	devc = sdi->priv;
	236
	237	if (devc->cur_mq == -1)
	238	/* Haven't seen configuration yet, so can't know what
	239	* the fetched float means. Not really an error, we'll
	240	* get metadata soon enough. */
	241	return SR_OK;
	242
	243	if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) {
	244	/* An invalid measurement shows up on the display as "O.L, but
	245	* comes through like this. Since comparing 38-digit floats
	246	* is rather problematic, we'll cut through this here. */
	247	fvalue = NAN;
	248	} else {
	249	mstr = g_match_info_fetch(match, 1);
	250	fvalue = strtof(mstr, &eptr);
	251	g_free(mstr);
	252	if (fvalue == 0.0 && eptr == mstr) {
38d326e8	253	sr_err("Invalid float.");
e93cdf42 BV	254	return SR_ERR;
	255	}
	256	if (devc->cur_divider > 0)
	257	fvalue /= devc->cur_divider;
	258	}
	259
	260	memset(&analog, 0, sizeof(struct sr_datafeed_analog));
	261	analog.mq = devc->cur_mq;
e6b021f3 BV	262	analog.unit = devc->cur_unit;
e6b021f3 BV	263	analog.mqflags = devc->cur_mqflags;
e93cdf42 BV	264	analog.num_samples = 1;
	265	analog.data = &fvalue;
	266	packet.type = SR_DF_ANALOG;
	267	packet.payload = &analog;
	268	sr_session_send(devc->cb_data, &packet);
	269
	270	devc->num_samples++;
	271
	272	return SR_OK;
	273	}
	274
a4394fb3	275	static int send_conf(const struct sr_dev_inst *sdi)
e93cdf42	276	{
e93cdf42 BV	277	return agdmm_send(sdi, "CONF?");
	278	}
	279
a4394fb3	280	static int recv_conf_u123x(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42 BV	281	{
	282	struct dev_context *devc;
	283	char *mstr;
	284
38d326e8	285	sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
e93cdf42 BV	286	devc = sdi->priv;
	287	mstr = g_match_info_fetch(match, 1);
	288	if (!strcmp(mstr, "V")) {
	289	devc->cur_mq = SR_MQ_VOLTAGE;
e6b021f3 BV	290	devc->cur_unit = SR_UNIT_VOLT;
e6b021f3 BV	291	devc->cur_mqflags = 0;
e93cdf42 BV	292	devc->cur_divider = 0;
e93cdf42 BV	293	} else if(!strcmp(mstr, "MV")) {
e6b021f3 BV	294	if (devc->mode_tempaux) {
	295	devc->cur_mq = SR_MQ_TEMPERATURE;
	296	/* No way to detect whether Fahrenheit or Celcius
	297	* is used, so we'll just default to Celcius. */
	298	devc->cur_unit = SR_UNIT_CELSIUS;
	299	devc->cur_mqflags = 0;
	300	devc->cur_divider = 0;
	301	} else {
	302	devc->cur_mq = SR_MQ_VOLTAGE;
	303	devc->cur_unit = SR_UNIT_VOLT;
	304	devc->cur_mqflags = 0;
	305	devc->cur_divider = 1000;
	306	}
e93cdf42 BV	307	} else if(!strcmp(mstr, "A")) {
e93cdf42 BV	308	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	309	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	310	devc->cur_mqflags = 0;
e93cdf42 BV	311	devc->cur_divider = 0;
	312	} else if(!strcmp(mstr, "UA")) {
	313	devc->cur_mq = SR_MQ_CURRENT;
e6b021f3 BV	314	devc->cur_unit = SR_UNIT_AMPERE;
e6b021f3 BV	315	devc->cur_mqflags = 0;
e93cdf42 BV	316	devc->cur_divider = 1000000;
	317	} else if(!strcmp(mstr, "FREQ")) {
	318	devc->cur_mq = SR_MQ_FREQUENCY;
e6b021f3 BV	319	devc->cur_unit = SR_UNIT_HERTZ;
e6b021f3 BV	320	devc->cur_mqflags = 0;
e93cdf42 BV	321	devc->cur_divider = 0;
e93cdf42 BV	322	} else if(!strcmp(mstr, "RES")) {
e6b021f3 BV	323	if (devc->mode_continuity) {
	324	devc->cur_mq = SR_MQ_CONTINUITY;
	325	devc->cur_unit = SR_UNIT_BOOLEAN;
	326	} else {
	327	devc->cur_mq = SR_MQ_RESISTANCE;
	328	devc->cur_unit = SR_UNIT_OHM;
	329	}
	330	devc->cur_mqflags = 0;
e93cdf42 BV	331	devc->cur_divider = 0;
	332	} else if(!strcmp(mstr, "CAP")) {
	333	devc->cur_mq = SR_MQ_CAPACITANCE;
e6b021f3 BV	334	devc->cur_unit = SR_UNIT_FARAD;
e6b021f3 BV	335	devc->cur_mqflags = 0;
e93cdf42	336	devc->cur_divider = 0;
e93cdf42	337	} else
38d326e8	338	sr_dbg("Unknown first argument.");
e93cdf42 BV	339	g_free(mstr);
e93cdf42 BV	340
e066c32a BV	341	if (g_match_info_get_match_count(match) == 4) {
e066c32a BV	342	mstr = g_match_info_fetch(match, 3);
e93cdf42 BV	343	/* Third value, if present, is always AC or DC. */
e93cdf42 BV	344	if (!strcmp(mstr, "AC"))
e6b021f3	345	devc->cur_mqflags \|= SR_MQFLAG_AC;
e93cdf42	346	else if (!strcmp(mstr, "DC"))
e6b021f3	347	devc->cur_mqflags \|= SR_MQFLAG_DC;
e93cdf42	348	else
38d326e8	349	sr_dbg("Unknown third argument.");
e93cdf42	350	g_free(mstr);
e6b021f3 BV	351	} else
e6b021f3 BV	352	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
e93cdf42 BV	353
	354	return SR_OK;
	355	}
	356
8c0152f2 BV	357	static int recv_conf_u125x(const struct sr_dev_inst sdi, GMatchInfo match)
	358	{
	359	struct dev_context *devc;
	360	char *mstr;
	361
38d326e8	362	sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
8c0152f2 BV	363	devc = sdi->priv;
	364	mstr = g_match_info_fetch(match, 1);
	365	if (!strncmp(mstr, "VOLT", 4)) {
	366	devc->cur_mq = SR_MQ_VOLTAGE;
	367	devc->cur_unit = SR_UNIT_VOLT;
	368	devc->cur_mqflags = 0;
	369	devc->cur_divider = 0;
	370	if (mstr[4] == ':') {
	371	if (!strcmp(mstr + 4, "AC"))
	372	devc->cur_mqflags \|= SR_MQFLAG_AC;
	373	else if (!strcmp(mstr + 4, "DC"))
	374	devc->cur_mqflags \|= SR_MQFLAG_DC;
	375	else
	376	/* "ACDC" appears as well, no idea what it means. */
	377	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
	378	} else
	379	devc->cur_mqflags &= ~(SR_MQFLAG_AC \| SR_MQFLAG_DC);
	380	} else if(!strcmp(mstr, "CURR")) {
	381	devc->cur_mq = SR_MQ_CURRENT;
	382	devc->cur_unit = SR_UNIT_AMPERE;
	383	devc->cur_mqflags = 0;
	384	devc->cur_divider = 0;
	385	} else if(!strcmp(mstr, "RES")) {
	386	if (devc->mode_continuity) {
	387	devc->cur_mq = SR_MQ_CONTINUITY;
	388	devc->cur_unit = SR_UNIT_BOOLEAN;
	389	} else {
	390	devc->cur_mq = SR_MQ_RESISTANCE;
	391	devc->cur_unit = SR_UNIT_OHM;
	392	}
	393	devc->cur_mqflags = 0;
	394	devc->cur_divider = 0;
38d326e8 UH	395	} else
38d326e8 UH	396	sr_dbg("Unknown first argument.");
8c0152f2 BV	397	g_free(mstr);
8c0152f2 BV	398
8c0152f2 BV	399	return SR_OK;
	400	}
	401
a4394fb3 BV	402	/* At least the 123x and 125x appear to have this. */
	403	static int recv_conf(const struct sr_dev_inst sdi, GMatchInfo match)
	404	{
	405	struct dev_context *devc;
	406	char *mstr;
	407
38d326e8	408	sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
a4394fb3 BV	409	devc = sdi->priv;
	410	mstr = g_match_info_fetch(match, 1);
	411	if(!strcmp(mstr, "DIOD")) {
	412	devc->cur_mq = SR_MQ_VOLTAGE;
	413	devc->cur_unit = SR_UNIT_VOLT;
	414	devc->cur_mqflags = SR_MQFLAG_DIODE;
	415	devc->cur_divider = 0;
8c0152f2	416	} else
38d326e8	417	sr_dbg("Unknown single argument.");
a4394fb3 BV	418	g_free(mstr);
	419
	420	return SR_OK;
	421	}
	422
81599cc5 BV	423	/* This comes in whenever the rotary switch is changed to a new position.
	424	* We could use it to determine the major measurement mode, but we already
	425	* have the output of CONF? for that, which is more detailed. However
	426	* we do need to catch this here, or it'll show up in some other output. */
a4394fb3	427	static int recv_switch(const struct sr_dev_inst sdi, GMatchInfo match)
e93cdf42	428	{
e93cdf42 BV	429	(void)sdi;
e93cdf42 BV	430
38d326e8	431	sr_spew("Switch '%s'.", g_match_info_get_string(match));
e93cdf42 BV	432
	433	return SR_OK;
	434	}
	435
8c0152f2	436	SR_PRIV const struct agdmm_job agdmm_jobs_u123x[] = {
a4394fb3 BV	437	{ 143, send_stat },
	438	{ 1000, send_conf },
	439	{ 143, send_fetc },
e93cdf42 BV	440	{ 0, NULL }
	441	};
	442
8c0152f2 BV	443	SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = {
8c0152f2 BV	444	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x },
a4394fb3 BV	445	{ "^\\*([0-9])$", recv_switch },
	446	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	447	{ "^\"(V\|MV\|A\|UA\|FREQ),(\\d),(AC\|DC)\"$", recv_conf_u123x },
	448	{ "^\"(RES\|CAP),(\\d)\"$", recv_conf_u123x},
	449	{ "^\"(DIOD)\"$", recv_conf },
e93cdf42 BV	450	{ NULL, NULL }
	451	};
	452
8c0152f2 BV	453	SR_PRIV const struct agdmm_job agdmm_jobs_u125x[] = {
	454	{ 143, send_stat },
	455	{ 1000, send_conf },
	456	{ 143, send_fetc },
	457	{ 0, NULL }
	458	};
	459
	460	SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = {
	461	{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x },
	462	{ "^\\*([0-9])$", recv_switch },
	463	{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
	464	{ "^(VOLT\|CURR\|RES\|CAP) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	465	{ "^(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
	466	{ "^\"(DIOD)\"$", recv_conf },
	467	{ NULL, NULL }
	468	};