[libsigrok.git] / hardware / fluke-dmm / fluke.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 "fluke-dmm.h"
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <errno.h>


static struct sr_datafeed_analog *handle_qm_v1(const struct sr_dev_inst *sdi,
		char **tokens)
{
	struct sr_datafeed_analog *analog;
	float fvalue;
	char *e, *u;
	gboolean is_oor;

	(void)sdi;
	if (strcmp(tokens[0], "QM"))
		return NULL;

	if ((e = strstr(tokens[1], "Out of range"))) {
		is_oor = TRUE;
		fvalue = -1;
	} else {
		is_oor = FALSE;
		fvalue = strtof(tokens[1], &e);
		if (fvalue == 0.0 && e == tokens[1]) {
			/* Happens all the time, when switching modes. */
			sr_dbg("Invalid float.");
			return NULL;
		}
	}
	while(*e && *e == ' ')
		e++;

	/* TODO: Check malloc return value. */
	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
	analog->num_samples = 1;
	/* TODO: Check malloc return value. */
	analog->data = g_try_malloc(sizeof(float));
	if (is_oor)
		*analog->data = NAN;
	else
		*analog->data = fvalue;
	analog->mq = -1;

	if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
		analog->mq = SR_MQ_VOLTAGE;
		analog->unit = SR_UNIT_VOLT;
		if (!is_oor && e[0] == 'm')
			*analog->data /= 1000;
		/* This catches "V AC", "V DC" and "V AC+DC". */
		if (strstr(u, "AC"))
			analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
		if (strstr(u, "DC"))
			analog->mqflags |= SR_MQFLAG_DC;
	} else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
		analog->mq = SR_MQ_VOLTAGE;
		if (u[2] == 'm')
			analog->unit = SR_UNIT_DECIBEL_MW;
		else
			analog->unit = SR_UNIT_DECIBEL_VOLT;
		analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
	} else if ((u = strstr(e, "Ohms"))) {
		analog->mq = SR_MQ_RESISTANCE;
		analog->unit = SR_UNIT_OHM;
		if (is_oor)
			*analog->data = INFINITY;
		else if (e[0] == 'k')
			*analog->data *= 1000;
		else if (e[0] == 'M')
			*analog->data *= 1000000;
	} else if (!strcmp(e, "nS")) {
		analog->mq = SR_MQ_CONDUCTANCE;
		analog->unit = SR_UNIT_SIEMENS;
		*analog->data /= 1e+9;
	} else if ((u = strstr(e, "Farads"))) {
		analog->mq = SR_MQ_CAPACITANCE;
		analog->unit = SR_UNIT_FARAD;
		if (!is_oor) {
			if (e[0] == 'm')
				*analog->data /= 1e+3;
			else if (e[0] == 'u')
				*analog->data /= 1e+6;
			else if (e[0] == 'n')
				*analog->data /= 1e+9;
		}
	} else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
		analog->mq = SR_MQ_TEMPERATURE;
		if (u[4] == 'C')
			analog->unit = SR_UNIT_CELSIUS;
		else
			analog->unit = SR_UNIT_FAHRENHEIT;
	} else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
		analog->mq = SR_MQ_CURRENT;
		analog->unit = SR_UNIT_AMPERE;
		/* This catches "A AC", "A DC" and "A AC+DC". */
		if (strstr(u, "AC"))
			analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
		if (strstr(u, "DC"))
			analog->mqflags |= SR_MQFLAG_DC;
		if (!is_oor) {
			if (e[0] == 'm')
				*analog->data /= 1e+3;
			else if (e[0] == 'u')
				*analog->data /= 1e+6;
		}
	} else if ((u = strstr(e, "Hz"))) {
		analog->mq = SR_MQ_FREQUENCY;
		analog->unit = SR_UNIT_HERTZ;
		if (e[0] == 'k')
			*analog->data *= 1e+3;
	} else if (!strcmp(e, "%")) {
		analog->mq = SR_MQ_DUTY_CYCLE;
		analog->unit = SR_UNIT_PERCENTAGE;
	} else if ((u = strstr(e, "ms"))) {
		analog->mq = SR_MQ_PULSE_WIDTH;
		analog->unit = SR_UNIT_SECOND;
		*analog->data /= 1e+3;
	}

	if (analog->mq == -1) {
		/* Not a valid measurement. */
		g_free(analog->data);
		g_free(analog);
		analog = NULL;
	}

	return analog;
}

static struct sr_datafeed_analog *handle_qm_v2(const struct sr_dev_inst *sdi,
		char **tokens)
{
	struct sr_datafeed_analog *analog;
	float fvalue;
	char *eptr;

	(void)sdi;
	fvalue = strtof(tokens[0], &eptr);
	if (fvalue == 0.0 && eptr == tokens[0]) {
		sr_err("Invalid float.");
		return NULL;
	}

	/* TODO: Check malloc return value. */
	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
	analog->num_samples = 1;
	/* TODO: Check malloc return value. */
	analog->data = g_try_malloc(sizeof(float));
	*analog->data = fvalue;
	analog->mq = -1;

	if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) {
		analog->mq = SR_MQ_VOLTAGE;
		analog->unit = SR_UNIT_VOLT;
		if (!strcmp(tokens[2], "NORMAL")) {
			if (tokens[1][1] == 'A') {
				analog->mqflags |= SR_MQFLAG_AC;
				analog->mqflags |= SR_MQFLAG_RMS;
			} else
				analog->mqflags |= SR_MQFLAG_DC;
		} else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
			*analog->data = NAN;
		} else
			analog->mq = -1;
	} else if (!strcmp(tokens[1], "dBV") || !strcmp(tokens[1], "dBm")) {
		analog->mq = SR_MQ_VOLTAGE;
		if (tokens[1][2] == 'm')
			analog->unit = SR_UNIT_DECIBEL_MW;
		else
			analog->unit = SR_UNIT_DECIBEL_VOLT;
		analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
	} else if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) {
		if (!strcmp(tokens[2], "NORMAL")) {
			analog->mq = SR_MQ_TEMPERATURE;
			if (tokens[1][0] == 'C')
				analog->unit = SR_UNIT_CELSIUS;
			else
				analog->unit = SR_UNIT_FAHRENHEIT;
		}
	} else if (!strcmp(tokens[1], "OHM")) {
		if (!strcmp(tokens[3], "NONE")) {
			analog->mq = SR_MQ_RESISTANCE;
			analog->unit = SR_UNIT_OHM;
			if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
				*analog->data = INFINITY;
			} else if (strcmp(tokens[2], "NORMAL"))
				analog->mq = -1;
		} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
			analog->mq = SR_MQ_CONTINUITY;
			analog->unit = SR_UNIT_BOOLEAN;
			*analog->data = 0.0;
		} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
			analog->mq = SR_MQ_CONTINUITY;
			analog->unit = SR_UNIT_BOOLEAN;
			*analog->data = 1.0;
		}
	} else if (!strcmp(tokens[1], "F")
			&& !strcmp(tokens[2], "NORMAL")
			&& !strcmp(tokens[3], "NONE")) {
		analog->mq = SR_MQ_CAPACITANCE;
		analog->unit = SR_UNIT_FARAD;
	} else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) {
		analog->mq = SR_MQ_CURRENT;
		analog->unit = SR_UNIT_AMPERE;
		if (!strcmp(tokens[2], "NORMAL")) {
			if (tokens[1][1] == 'A') {
				analog->mqflags |= SR_MQFLAG_AC;
				analog->mqflags |= SR_MQFLAG_RMS;
			} else
				analog->mqflags |= SR_MQFLAG_DC;
		} else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
			*analog->data = NAN;
		} else
			analog->mq = -1;
	} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
		analog->mq = SR_MQ_FREQUENCY;
		analog->unit = SR_UNIT_HERTZ;
	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
		analog->mq = SR_MQ_DUTY_CYCLE;
		analog->unit = SR_UNIT_PERCENTAGE;
	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
		analog->mq = SR_MQ_PULSE_WIDTH;
		analog->unit = SR_UNIT_SECOND;
	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
		analog->mq = SR_MQ_CONDUCTANCE;
		analog->unit = SR_UNIT_SIEMENS;
	}

	if (analog->mq == -1) {
		/* Not a valid measurement. */
		g_free(analog->data);
		g_free(analog);
		analog = NULL;
	}

	return analog;
}

static void handle_line(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog *analog;
	char **tokens;

	devc = sdi->priv;
	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);

	if (devc->buflen == 1) {
		if (devc->buf[0] != '0') {
			/* Not just a CMD_ACK from the query command. */
			sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
			devc->expect_response = FALSE;
		}
		devc->buflen = 0;
		return;
	}

	analog = NULL;
	tokens = g_strsplit(devc->buf, ",", 0);
	if (tokens[0] && tokens[1]) {
		if (devc->profile->model == FLUKE_187) {
			devc->expect_response = FALSE;
			analog = handle_qm_v1(sdi, tokens);
		} else if (devc->profile->model == FLUKE_287) {
			devc->expect_response = FALSE;
			analog = handle_qm_v2(sdi, tokens);
		}
	}
	g_strfreev(tokens);
	devc->buflen = 0;

	if (analog) {
		/* Got a measurement. */
		packet.type = SR_DF_ANALOG;
		packet.payload = analog;
		sr_session_send(devc->cb_data, &packet);
		devc->num_samples++;
		g_free(analog->data);
		g_free(analog);
	}

}

SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
{
	const struct sr_dev_inst *sdi;
	struct dev_context *devc;
	int len;
	int64_t now, elapsed;

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

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

	if (revents == G_IO_IN) {
		/* Serial data arrived. */
		while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
			len = serial_read(fd, devc->buf + devc->buflen, 1);
			if (len < 1)
				break;
			devc->buflen++;
			*(devc->buf + devc->buflen) = '\0';
			if (*(devc->buf + devc->buflen - 1) == '\r') {
				*(devc->buf + --devc->buflen) = '\0';
				handle_line(sdi);
				break;
			}
		}
	}

	if (devc->num_samples >= devc->limit_samples) {
		sdi->driver->dev_acquisition_stop(sdi, cb_data);
		return TRUE;
	}

	now = g_get_monotonic_time() / 1000;
	elapsed = now - devc->cmd_sent_at;
	/* Send query command at poll_period interval, or after 1 second
	 * has elapsed. This will make it recover from any out-of-sync
	 * or temporary disconnect issues. */
	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
			|| elapsed > 1000) {
		sr_spew("Sending QM.");
		if (serial_write(devc->serial->fd, "QM\r", 3) == -1)
			sr_err("Unable to send QM: %s.", strerror(errno));
		devc->cmd_sent_at = now;
		devc->expect_response = TRUE;
	}

	return TRUE;
}
Commit	Line	Data
d38d2ef0 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"
d38d2ef0 BV	23	#include "fluke-dmm.h"
	24	#include <stdlib.h>
	25	#include <math.h>
	26	#include <string.h>
	27	#include <errno.h>
	28
	29
fe31f8b9 BV	30	static struct sr_datafeed_analog handle_qm_v1(const struct sr_dev_inst sdi,
	31	char **tokens)
	32	{
	33	struct sr_datafeed_analog *analog;
	34	float fvalue;
	35	char e, u;
	36	gboolean is_oor;
	37
	38	(void)sdi;
	39	if (strcmp(tokens[0], "QM"))
	40	return NULL;
	41
	42	if ((e = strstr(tokens[1], "Out of range"))) {
	43	is_oor = TRUE;
	44	fvalue = -1;
	45	} else {
	46	is_oor = FALSE;
	47	fvalue = strtof(tokens[1], &e);
	48	if (fvalue == 0.0 && e == tokens[1]) {
	49	/* Happens all the time, when switching modes. */
31d84da3	50	sr_dbg("Invalid float.");
fe31f8b9 BV	51	return NULL;
	52	}
	53	}
	54	while(e && e == ' ')
	55	e++;
	56
886a52b6	57	/* TODO: Check malloc return value. */
fe31f8b9 BV	58	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
fe31f8b9 BV	59	analog->num_samples = 1;
886a52b6	60	/* TODO: Check malloc return value. */
fe31f8b9 BV	61	analog->data = g_try_malloc(sizeof(float));
	62	if (is_oor)
	63	*analog->data = NAN;
	64	else
	65	*analog->data = fvalue;
	66	analog->mq = -1;
	67
	68	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
	69	analog->mq = SR_MQ_VOLTAGE;
	70	analog->unit = SR_UNIT_VOLT;
	71	if (!is_oor && e[0] == 'm')
	72	*analog->data /= 1000;
	73	/* This catches "V AC", "V DC" and "V AC+DC". */
	74	if (strstr(u, "AC"))
	75	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	76	if (strstr(u, "DC"))
	77	analog->mqflags \|= SR_MQFLAG_DC;
	78	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
	79	analog->mq = SR_MQ_VOLTAGE;
	80	if (u[2] == 'm')
	81	analog->unit = SR_UNIT_DECIBEL_MW;
	82	else
	83	analog->unit = SR_UNIT_DECIBEL_VOLT;
	84	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	85	} else if ((u = strstr(e, "Ohms"))) {
	86	analog->mq = SR_MQ_RESISTANCE;
	87	analog->unit = SR_UNIT_OHM;
	88	if (is_oor)
	89	*analog->data = INFINITY;
	90	else if (e[0] == 'k')
	91	analog->data = 1000;
	92	else if (e[0] == 'M')
	93	analog->data = 1000000;
	94	} else if (!strcmp(e, "nS")) {
	95	analog->mq = SR_MQ_CONDUCTANCE;
	96	analog->unit = SR_UNIT_SIEMENS;
	97	*analog->data /= 1e+9;
	98	} else if ((u = strstr(e, "Farads"))) {
	99	analog->mq = SR_MQ_CAPACITANCE;
	100	analog->unit = SR_UNIT_FARAD;
	101	if (!is_oor) {
	102	if (e[0] == 'm')
	103	*analog->data /= 1e+3;
	104	else if (e[0] == 'u')
	105	*analog->data /= 1e+6;
	106	else if (e[0] == 'n')
	107	*analog->data /= 1e+9;
	108	}
	109	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
	110	analog->mq = SR_MQ_TEMPERATURE;
	111	if (u[4] == 'C')
	112	analog->unit = SR_UNIT_CELSIUS;
	113	else
	114	analog->unit = SR_UNIT_FAHRENHEIT;
	115	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
	116	analog->mq = SR_MQ_CURRENT;
	117	analog->unit = SR_UNIT_AMPERE;
	118	/* This catches "A AC", "A DC" and "A AC+DC". */
	119	if (strstr(u, "AC"))
	120	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	121	if (strstr(u, "DC"))
	122	analog->mqflags \|= SR_MQFLAG_DC;
	123	if (!is_oor) {
	124	if (e[0] == 'm')
125	*analog->data /= 1e+3;
126	else if (e[0] == 'u')
127	*analog->data /= 1e+6;
128	}
129	} else if ((u = strstr(e, "Hz"))) {
130	analog->mq = SR_MQ_FREQUENCY;
131	analog->unit = SR_UNIT_HERTZ;
132	if (e[0] == 'k')
133	analog->data = 1e+3;
134	} else if (!strcmp(e, "%")) {
135	analog->mq = SR_MQ_DUTY_CYCLE;
136	analog->unit = SR_UNIT_PERCENTAGE;
137	} else if ((u = strstr(e, "ms"))) {
138	analog->mq = SR_MQ_PULSE_WIDTH;
139	analog->unit = SR_UNIT_SECOND;
140	*analog->data /= 1e+3;
141	}
142
143	if (analog->mq == -1) {
144	/* Not a valid measurement. */
145	g_free(analog->data);
146	g_free(analog);
147	analog = NULL;
148	}
149
150	return analog;
151	}
152
d38d2ef0 BV	153	static struct sr_datafeed_analog handle_qm_v2(const struct sr_dev_inst sdi,
	154	char **tokens)
	155	{
	156	struct sr_datafeed_analog *analog;
	157	float fvalue;
	158	char *eptr;
	159
	160	(void)sdi;
	161	fvalue = strtof(tokens[0], &eptr);
	162	if (fvalue == 0.0 && eptr == tokens[0]) {
31d84da3	163	sr_err("Invalid float.");
d38d2ef0 BV	164	return NULL;
	165	}
	166
886a52b6	167	/* TODO: Check malloc return value. */
d38d2ef0 BV	168	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
d38d2ef0 BV	169	analog->num_samples = 1;
886a52b6	170	/* TODO: Check malloc return value. */
d38d2ef0 BV	171	analog->data = g_try_malloc(sizeof(float));
	172	*analog->data = fvalue;
	173	analog->mq = -1;
	174
	175	if (!strcmp(tokens[1], "VAC") \|\| !strcmp(tokens[1], "VDC")) {
	176	analog->mq = SR_MQ_VOLTAGE;
	177	analog->unit = SR_UNIT_VOLT;
	178	if (!strcmp(tokens[2], "NORMAL")) {
	179	if (tokens[1][1] == 'A') {
	180	analog->mqflags \|= SR_MQFLAG_AC;
	181	analog->mqflags \|= SR_MQFLAG_RMS;
	182	} else
	183	analog->mqflags \|= SR_MQFLAG_DC;
	184	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	185	*analog->data = NAN;
	186	} else
	187	analog->mq = -1;
a28dac0a	188	} else if (!strcmp(tokens[1], "dBV") \|\| !strcmp(tokens[1], "dBm")) {
2c04dede BV	189	analog->mq = SR_MQ_VOLTAGE;
	190	if (tokens[1][2] == 'm')
	191	analog->unit = SR_UNIT_DECIBEL_MW;
	192	else
	193	analog->unit = SR_UNIT_DECIBEL_VOLT;
	194	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
a28dac0a	195	} else if (!strcmp(tokens[1], "CEL") \|\| !strcmp(tokens[1], "FAR")) {
d38d2ef0 BV	196	if (!strcmp(tokens[2], "NORMAL")) {
	197	analog->mq = SR_MQ_TEMPERATURE;
	198	if (tokens[1][0] == 'C')
fe31f8b9	199	analog->unit = SR_UNIT_CELSIUS;
d38d2ef0 BV	200	else
	201	analog->unit = SR_UNIT_FAHRENHEIT;
	202	}
a28dac0a	203	} else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0 BV	204	if (!strcmp(tokens[3], "NONE")) {
	205	analog->mq = SR_MQ_RESISTANCE;
	206	analog->unit = SR_UNIT_OHM;
	207	if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	208	*analog->data = INFINITY;
	209	} else if (strcmp(tokens[2], "NORMAL"))
	210	analog->mq = -1;
	211	} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
	212	analog->mq = SR_MQ_CONTINUITY;
	213	analog->unit = SR_UNIT_BOOLEAN;
	214	*analog->data = 0.0;
	215	} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
	216	analog->mq = SR_MQ_CONTINUITY;
	217	analog->unit = SR_UNIT_BOOLEAN;
	218	*analog->data = 1.0;
	219	}
a28dac0a	220	} else if (!strcmp(tokens[1], "F")
d38d2ef0 BV	221	&& !strcmp(tokens[2], "NORMAL")
	222	&& !strcmp(tokens[3], "NONE")) {
	223	analog->mq = SR_MQ_CAPACITANCE;
	224	analog->unit = SR_UNIT_FARAD;
	225	} else if (!strcmp(tokens[1], "AAC") \|\| !strcmp(tokens[1], "ADC")) {
	226	analog->mq = SR_MQ_CURRENT;
	227	analog->unit = SR_UNIT_AMPERE;
d38d2ef0 BV	228	if (!strcmp(tokens[2], "NORMAL")) {
	229	if (tokens[1][1] == 'A') {
	230	analog->mqflags \|= SR_MQFLAG_AC;
	231	analog->mqflags \|= SR_MQFLAG_RMS;
	232	} else
	233	analog->mqflags \|= SR_MQFLAG_DC;
	234	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	235	*analog->data = NAN;
	236	} else
	237	analog->mq = -1;
	238	} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
	239	analog->mq = SR_MQ_FREQUENCY;
	240	analog->unit = SR_UNIT_HERTZ;
a28dac0a	241	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	242	analog->mq = SR_MQ_DUTY_CYCLE;
d38d2ef0 BV	243	analog->unit = SR_UNIT_PERCENTAGE;
a28dac0a	244	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	245	analog->mq = SR_MQ_PULSE_WIDTH;
d38d2ef0 BV	246	analog->unit = SR_UNIT_SECOND;
a28dac0a	247	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	248	analog->mq = SR_MQ_CONDUCTANCE;
	249	analog->unit = SR_UNIT_SIEMENS;
	250	}
	251
d38d2ef0 BV	252	if (analog->mq == -1) {
	253	/* Not a valid measurement. */
	254	g_free(analog->data);
	255	g_free(analog);
	256	analog = NULL;
	257	}
	258
	259	return analog;
	260	}
	261
	262	static void handle_line(const struct sr_dev_inst *sdi)
	263	{
	264	struct dev_context *devc;
	265	struct sr_datafeed_packet packet;
	266	struct sr_datafeed_analog *analog;
	267	char **tokens;
	268
	269	devc = sdi->priv;
31d84da3	270	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	271
	272	if (devc->buflen == 1) {
	273	if (devc->buf[0] != '0') {
	274	/* Not just a CMD_ACK from the query command. */
31d84da3	275	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	276	devc->expect_response = FALSE;
	277	}
	278	devc->buflen = 0;
	279	return;
	280	}
	281
	282	analog = NULL;
	283	tokens = g_strsplit(devc->buf, ",", 0);
fe31f8b9 BV	284	if (tokens[0] && tokens[1]) {
	285	if (devc->profile->model == FLUKE_187) {
	286	devc->expect_response = FALSE;
	287	analog = handle_qm_v1(sdi, tokens);
	288	} else if (devc->profile->model == FLUKE_287) {
d38d2ef0	289	devc->expect_response = FALSE;
fe31f8b9	290	analog = handle_qm_v2(sdi, tokens);
d38d2ef0	291	}
d38d2ef0 BV	292	}
	293	g_strfreev(tokens);
	294	devc->buflen = 0;
	295
	296	if (analog) {
	297	/* Got a measurement. */
d38d2ef0 BV	298	packet.type = SR_DF_ANALOG;
	299	packet.payload = analog;
	300	sr_session_send(devc->cb_data, &packet);
	301	devc->num_samples++;
	302	g_free(analog->data);
	303	g_free(analog);
	304	}
	305
	306	}
	307
	308	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	309	{
	310	const struct sr_dev_inst *sdi;
	311	struct dev_context *devc;
	312	int len;
	313	int64_t now, elapsed;
	314
	315	if (!(sdi = cb_data))
	316	return TRUE;
	317
	318	if (!(devc = sdi->priv))
	319	return TRUE;
	320
	321	if (revents == G_IO_IN) {
	322	/* Serial data arrived. */
	323	while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
	324	len = serial_read(fd, devc->buf + devc->buflen, 1);
	325	if (len < 1)
	326	break;
	327	devc->buflen++;
	328	*(devc->buf + devc->buflen) = '\0';
	329	if (*(devc->buf + devc->buflen - 1) == '\r') {
	330	*(devc->buf + --devc->buflen) = '\0';
	331	handle_line(sdi);
	332	break;
	333	}
	334	}
	335	}
	336
	337	if (devc->num_samples >= devc->limit_samples) {
	338	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	339	return TRUE;
	340	}
	341
	342	now = g_get_monotonic_time() / 1000;
	343	elapsed = now - devc->cmd_sent_at;
	344	/* Send query command at poll_period interval, or after 1 second
	345	* has elapsed. This will make it recover from any out-of-sync
	346	* or temporary disconnect issues. */
	347	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
	348	\|\| elapsed > 1000) {
31d84da3	349	sr_spew("Sending QM.");
d38d2ef0	350	if (serial_write(devc->serial->fd, "QM\r", 3) == -1)
31d84da3	351	sr_err("Unable to send QM: %s.", strerror(errno));
d38d2ef0 BV	352	devc->cmd_sent_at = now;
	353	devc->expect_response = TRUE;
	354	}
	355
	356	return TRUE;
	357	}
	358
	359