[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)
{
	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;
64d33dc2	39
fe31f8b9 BV	40	if (strcmp(tokens[0], "QM"))
	41	return NULL;
	42
	43	if ((e = strstr(tokens[1], "Out of range"))) {
	44	is_oor = TRUE;
	45	fvalue = -1;
	46	} else {
	47	is_oor = FALSE;
	48	fvalue = strtof(tokens[1], &e);
	49	if (fvalue == 0.0 && e == tokens[1]) {
	50	/* Happens all the time, when switching modes. */
31d84da3	51	sr_dbg("Invalid float.");
fe31f8b9 BV	52	return NULL;
	53	}
	54	}
	55	while(e && e == ' ')
	56	e++;
	57
886a52b6	58	/* TODO: Check malloc return value. */
fe31f8b9 BV	59	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
fe31f8b9 BV	60	analog->num_samples = 1;
886a52b6	61	/* TODO: Check malloc return value. */
fe31f8b9 BV	62	analog->data = g_try_malloc(sizeof(float));
	63	if (is_oor)
	64	*analog->data = NAN;
	65	else
	66	*analog->data = fvalue;
	67	analog->mq = -1;
	68
	69	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
	70	analog->mq = SR_MQ_VOLTAGE;
	71	analog->unit = SR_UNIT_VOLT;
	72	if (!is_oor && e[0] == 'm')
	73	*analog->data /= 1000;
	74	/* This catches "V AC", "V DC" and "V AC+DC". */
	75	if (strstr(u, "AC"))
	76	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	77	if (strstr(u, "DC"))
	78	analog->mqflags \|= SR_MQFLAG_DC;
	79	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
	80	analog->mq = SR_MQ_VOLTAGE;
	81	if (u[2] == 'm')
	82	analog->unit = SR_UNIT_DECIBEL_MW;
	83	else
	84	analog->unit = SR_UNIT_DECIBEL_VOLT;
	85	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	86	} else if ((u = strstr(e, "Ohms"))) {
	87	analog->mq = SR_MQ_RESISTANCE;
	88	analog->unit = SR_UNIT_OHM;
	89	if (is_oor)
	90	*analog->data = INFINITY;
	91	else if (e[0] == 'k')
	92	analog->data = 1000;
	93	else if (e[0] == 'M')
	94	analog->data = 1000000;
	95	} else if (!strcmp(e, "nS")) {
	96	analog->mq = SR_MQ_CONDUCTANCE;
	97	analog->unit = SR_UNIT_SIEMENS;
	98	*analog->data /= 1e+9;
	99	} else if ((u = strstr(e, "Farads"))) {
	100	analog->mq = SR_MQ_CAPACITANCE;
	101	analog->unit = SR_UNIT_FARAD;
	102	if (!is_oor) {
	103	if (e[0] == 'm')
	104	*analog->data /= 1e+3;
	105	else if (e[0] == 'u')
	106	*analog->data /= 1e+6;
	107	else if (e[0] == 'n')
	108	*analog->data /= 1e+9;
	109	}
	110	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
	111	analog->mq = SR_MQ_TEMPERATURE;
	112	if (u[4] == 'C')
	113	analog->unit = SR_UNIT_CELSIUS;
	114	else
	115	analog->unit = SR_UNIT_FAHRENHEIT;
	116	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
	117	analog->mq = SR_MQ_CURRENT;
	118	analog->unit = SR_UNIT_AMPERE;
	119	/* This catches "A AC", "A DC" and "A AC+DC". */
	120	if (strstr(u, "AC"))
	121	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	122	if (strstr(u, "DC"))
	123	analog->mqflags \|= SR_MQFLAG_DC;
	124	if (!is_oor) {
	125	if (e[0] == 'm')
126	*analog->data /= 1e+3;
127	else if (e[0] == 'u')
128	*analog->data /= 1e+6;
129	}
130	} else if ((u = strstr(e, "Hz"))) {
131	analog->mq = SR_MQ_FREQUENCY;
132	analog->unit = SR_UNIT_HERTZ;
133	if (e[0] == 'k')
134	analog->data = 1e+3;
135	} else if (!strcmp(e, "%")) {
136	analog->mq = SR_MQ_DUTY_CYCLE;
137	analog->unit = SR_UNIT_PERCENTAGE;
138	} else if ((u = strstr(e, "ms"))) {
139	analog->mq = SR_MQ_PULSE_WIDTH;
140	analog->unit = SR_UNIT_SECOND;
141	*analog->data /= 1e+3;
142	}
143
144	if (analog->mq == -1) {
145	/* Not a valid measurement. */
146	g_free(analog->data);
147	g_free(analog);
148	analog = NULL;
149	}
150
151	return analog;
152	}
153
d38d2ef0 BV	154	static struct sr_datafeed_analog handle_qm_v2(const struct sr_dev_inst sdi,
	155	char **tokens)
	156	{
	157	struct sr_datafeed_analog *analog;
	158	float fvalue;
	159	char *eptr;
	160
	161	(void)sdi;
64d33dc2	162
d38d2ef0 BV	163	fvalue = strtof(tokens[0], &eptr);
d38d2ef0 BV	164	if (fvalue == 0.0 && eptr == tokens[0]) {
31d84da3	165	sr_err("Invalid float.");
d38d2ef0 BV	166	return NULL;
	167	}
	168
886a52b6	169	/* TODO: Check malloc return value. */
d38d2ef0 BV	170	analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
d38d2ef0 BV	171	analog->num_samples = 1;
886a52b6	172	/* TODO: Check malloc return value. */
d38d2ef0 BV	173	analog->data = g_try_malloc(sizeof(float));
	174	*analog->data = fvalue;
	175	analog->mq = -1;
	176
	177	if (!strcmp(tokens[1], "VAC") \|\| !strcmp(tokens[1], "VDC")) {
	178	analog->mq = SR_MQ_VOLTAGE;
	179	analog->unit = SR_UNIT_VOLT;
	180	if (!strcmp(tokens[2], "NORMAL")) {
	181	if (tokens[1][1] == 'A') {
	182	analog->mqflags \|= SR_MQFLAG_AC;
	183	analog->mqflags \|= SR_MQFLAG_RMS;
	184	} else
	185	analog->mqflags \|= SR_MQFLAG_DC;
	186	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	187	*analog->data = NAN;
	188	} else
	189	analog->mq = -1;
a28dac0a	190	} else if (!strcmp(tokens[1], "dBV") \|\| !strcmp(tokens[1], "dBm")) {
2c04dede BV	191	analog->mq = SR_MQ_VOLTAGE;
	192	if (tokens[1][2] == 'm')
	193	analog->unit = SR_UNIT_DECIBEL_MW;
	194	else
	195	analog->unit = SR_UNIT_DECIBEL_VOLT;
	196	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
a28dac0a	197	} else if (!strcmp(tokens[1], "CEL") \|\| !strcmp(tokens[1], "FAR")) {
d38d2ef0 BV	198	if (!strcmp(tokens[2], "NORMAL")) {
	199	analog->mq = SR_MQ_TEMPERATURE;
	200	if (tokens[1][0] == 'C')
fe31f8b9	201	analog->unit = SR_UNIT_CELSIUS;
d38d2ef0 BV	202	else
	203	analog->unit = SR_UNIT_FAHRENHEIT;
	204	}
a28dac0a	205	} else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0 BV	206	if (!strcmp(tokens[3], "NONE")) {
	207	analog->mq = SR_MQ_RESISTANCE;
	208	analog->unit = SR_UNIT_OHM;
	209	if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	210	*analog->data = INFINITY;
	211	} else if (strcmp(tokens[2], "NORMAL"))
	212	analog->mq = -1;
	213	} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
	214	analog->mq = SR_MQ_CONTINUITY;
	215	analog->unit = SR_UNIT_BOOLEAN;
	216	*analog->data = 0.0;
	217	} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
	218	analog->mq = SR_MQ_CONTINUITY;
	219	analog->unit = SR_UNIT_BOOLEAN;
	220	*analog->data = 1.0;
	221	}
a28dac0a	222	} else if (!strcmp(tokens[1], "F")
d38d2ef0 BV	223	&& !strcmp(tokens[2], "NORMAL")
	224	&& !strcmp(tokens[3], "NONE")) {
	225	analog->mq = SR_MQ_CAPACITANCE;
	226	analog->unit = SR_UNIT_FARAD;
	227	} else if (!strcmp(tokens[1], "AAC") \|\| !strcmp(tokens[1], "ADC")) {
	228	analog->mq = SR_MQ_CURRENT;
	229	analog->unit = SR_UNIT_AMPERE;
d38d2ef0 BV	230	if (!strcmp(tokens[2], "NORMAL")) {
	231	if (tokens[1][1] == 'A') {
	232	analog->mqflags \|= SR_MQFLAG_AC;
	233	analog->mqflags \|= SR_MQFLAG_RMS;
	234	} else
	235	analog->mqflags \|= SR_MQFLAG_DC;
	236	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	237	*analog->data = NAN;
	238	} else
	239	analog->mq = -1;
	240	} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
	241	analog->mq = SR_MQ_FREQUENCY;
	242	analog->unit = SR_UNIT_HERTZ;
a28dac0a	243	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	244	analog->mq = SR_MQ_DUTY_CYCLE;
d38d2ef0 BV	245	analog->unit = SR_UNIT_PERCENTAGE;
a28dac0a	246	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	247	analog->mq = SR_MQ_PULSE_WIDTH;
d38d2ef0 BV	248	analog->unit = SR_UNIT_SECOND;
a28dac0a	249	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	250	analog->mq = SR_MQ_CONDUCTANCE;
	251	analog->unit = SR_UNIT_SIEMENS;
	252	}
	253
d38d2ef0 BV	254	if (analog->mq == -1) {
	255	/* Not a valid measurement. */
	256	g_free(analog->data);
	257	g_free(analog);
	258	analog = NULL;
	259	}
	260
	261	return analog;
	262	}
	263
	264	static void handle_line(const struct sr_dev_inst *sdi)
	265	{
	266	struct dev_context *devc;
	267	struct sr_datafeed_packet packet;
	268	struct sr_datafeed_analog *analog;
	269	char **tokens;
	270
	271	devc = sdi->priv;
31d84da3	272	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	273
	274	if (devc->buflen == 1) {
	275	if (devc->buf[0] != '0') {
	276	/* Not just a CMD_ACK from the query command. */
31d84da3	277	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	278	devc->expect_response = FALSE;
	279	}
	280	devc->buflen = 0;
	281	return;
	282	}
	283
	284	analog = NULL;
	285	tokens = g_strsplit(devc->buf, ",", 0);
fe31f8b9 BV	286	if (tokens[0] && tokens[1]) {
	287	if (devc->profile->model == FLUKE_187) {
	288	devc->expect_response = FALSE;
	289	analog = handle_qm_v1(sdi, tokens);
	290	} else if (devc->profile->model == FLUKE_287) {
d38d2ef0	291	devc->expect_response = FALSE;
fe31f8b9	292	analog = handle_qm_v2(sdi, tokens);
d38d2ef0	293	}
d38d2ef0 BV	294	}
	295	g_strfreev(tokens);
	296	devc->buflen = 0;
	297
	298	if (analog) {
	299	/* Got a measurement. */
d38d2ef0 BV	300	packet.type = SR_DF_ANALOG;
	301	packet.payload = analog;
	302	sr_session_send(devc->cb_data, &packet);
	303	devc->num_samples++;
	304	g_free(analog->data);
	305	g_free(analog);
	306	}
	307
	308	}
	309
	310	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	311	{
642e9d62	312	struct sr_dev_inst *sdi;
d38d2ef0 BV	313	struct dev_context *devc;
	314	int len;
	315	int64_t now, elapsed;
	316
	317	if (!(sdi = cb_data))
	318	return TRUE;
	319
	320	if (!(devc = sdi->priv))
	321	return TRUE;
	322
	323	if (revents == G_IO_IN) {
	324	/* Serial data arrived. */
	325	while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
	326	len = serial_read(fd, devc->buf + devc->buflen, 1);
	327	if (len < 1)
	328	break;
	329	devc->buflen++;
	330	*(devc->buf + devc->buflen) = '\0';
	331	if (*(devc->buf + devc->buflen - 1) == '\r') {
	332	*(devc->buf + --devc->buflen) = '\0';
	333	handle_line(sdi);
	334	break;
	335	}
	336	}
	337	}
	338
	339	if (devc->num_samples >= devc->limit_samples) {
	340	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	341	return TRUE;
	342	}
	343
	344	now = g_get_monotonic_time() / 1000;
	345	elapsed = now - devc->cmd_sent_at;
	346	/* Send query command at poll_period interval, or after 1 second
	347	* has elapsed. This will make it recover from any out-of-sync
	348	* or temporary disconnect issues. */
	349	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
	350	\|\| elapsed > 1000) {
31d84da3	351	sr_spew("Sending QM.");
d38d2ef0	352	if (serial_write(devc->serial->fd, "QM\r", 3) == -1)
31d84da3	353	sr_err("Unable to send QM: %s.", strerror(errno));
d38d2ef0 BV	354	devc->cmd_sent_at = now;
	355	devc->expect_response = TRUE;
	356	}
	357
	358	return TRUE;
	359	}
	360
	361