[libsigrok.git] / hardware / fluke-dmm / fluke.c

/*
 * This file is part of the libsigrok 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 <stdlib.h>
#include <math.h>
#include <string.h>
#include <errno.h>
#include <glib.h>
#include "libsigrok.h"
#include "libsigrok-internal.h"
#include "fluke-dmm.h"

static struct sr_datafeed_analog *handle_qm_18x(const struct sr_dev_inst *sdi,
		char **tokens)
{
	struct sr_datafeed_analog *analog;
	float fvalue;
	char *e, *u;
	gboolean is_oor;

	if (strcmp(tokens[0], "QM") || !tokens[1])
		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++;

	if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
		return NULL;
	if (!(analog->data = g_try_malloc(sizeof(float))))
		return NULL;
	analog->probes = sdi->probes;
	analog->num_samples = 1;
	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_28x(const struct sr_dev_inst *sdi,
		char **tokens)
{
	struct sr_datafeed_analog *analog;
	float fvalue;
	char *eptr;

	if (!tokens[1])
		return NULL;

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

	if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
		return NULL;
	if (!(analog->data = g_try_malloc(sizeof(float))))
		return NULL;
	analog->probes = sdi->probes;
	analog->num_samples = 1;
	*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_qm_19x_meta(const struct sr_dev_inst *sdi, char **tokens)
{
	struct dev_context *devc;
	int meas_type, meas_unit, meas_char, i;

	/* Make sure we have 7 valid tokens. */
	for (i = 0; tokens[i] && i < 7; i++);
	if (i != 7)
		return;

	if (strcmp(tokens[1], "1"))
		/* Invalid measurement. */
		return;

	if (strcmp(tokens[2], "3"))
		/* Only interested in input from the meter mode source. */
		return;

	devc = sdi->priv;

	/* Measurement type 11 == absolute, 19 = relative */
	meas_type = strtol(tokens[0], NULL, 10);
	if (meas_type != 11 && meas_type != 19)
		/* Device is in some mode we don't support. */
		return;

	/* We might get metadata for absolute and relative mode (if the device
	 * is in relative mode). In that case, relative takes precedence. */
	if (meas_type == 11 && devc->meas_type == 19)
		return;

	meas_unit = strtol(tokens[3], NULL, 10);
	if (meas_unit == 0)
		/* Device is turned off. Really. */
		return;
	meas_char = strtol(tokens[4], NULL, 10);

	devc->mq = devc->unit = -1;
	devc->mqflags = 0;
	switch (meas_unit) {
	case 1:
		devc->mq = SR_MQ_VOLTAGE;
		devc->unit = SR_UNIT_VOLT;
		if (meas_char == 1)
			devc->mqflags |= SR_MQFLAG_DC;
		else if (meas_char == 2)
			devc->mqflags |= SR_MQFLAG_AC;
		else if (meas_char == 3)
			devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
		else if (meas_char == 15)
			devc->mqflags |= SR_MQFLAG_DIODE;
		break;
	case 2:
		devc->mq = SR_MQ_CURRENT;
		devc->unit = SR_UNIT_AMPERE;
		if (meas_char == 1)
			devc->mqflags |= SR_MQFLAG_DC;
		else if (meas_char == 2)
			devc->mqflags |= SR_MQFLAG_AC;
		else if (meas_char == 3)
			devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
		break;
	case 3:
		if (meas_char == 1) {
			devc->mq = SR_MQ_RESISTANCE;
			devc->unit = SR_UNIT_OHM;
		} else if (meas_char == 16) {
			devc->mq = SR_MQ_CONTINUITY;
			devc->unit = SR_UNIT_BOOLEAN;
		}
		break;
	case 12:
		devc->mq = SR_MQ_TEMPERATURE;
		devc->unit = SR_UNIT_CELSIUS;
		break;
	case 13:
		devc->mq = SR_MQ_TEMPERATURE;
		devc->unit = SR_UNIT_FAHRENHEIT;
		break;
	default:
		sr_dbg("unknown unit: %d", meas_unit);
	}
	if (devc->mq == -1 && devc->unit == -1)
		return;

	/* If we got here, we know how to interpret the measurement. */
	devc->meas_type = meas_type;
	if (meas_type == 11)
		/* Absolute meter reading. */
		devc->is_relative = FALSE;
	else if (!strcmp(tokens[0], "19"))
		/* Relative meter reading. */
		devc->is_relative = TRUE;

}

static void handle_qm_19x_data(const struct sr_dev_inst *sdi, char **tokens)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog analog;
	float fvalue;
	char *eptr;

	if (!strcmp(tokens[0], "9.9E+37")) {
		/* An invalid measurement shows up on the display as "OL", but
		 * comes through like this. Since comparing 38-digit floats
		 * is rather problematic, we'll cut through this here. */
		fvalue = NAN;
	} else {
		fvalue = strtof(tokens[0], &eptr);
		if (fvalue == 0.0 && eptr == tokens[0]) {
			sr_err("Invalid float '%s'.", tokens[0]);
			return;
		}
	}

	devc = sdi->priv;
	if (devc->mq == -1 || devc->unit == -1)
		/* Don't have valid metadata yet. */
		return;


	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
		fvalue = INFINITY;
	else if (devc->mq == SR_MQ_CONTINUITY) {
		if (isnan(fvalue))
			fvalue = 0.0;
		else
			fvalue = 1.0;
	}

	analog.probes = sdi->probes;
	analog.num_samples = 1;
	analog.data = &fvalue;
	analog.mq = devc->mq;
	analog.unit = devc->unit;
	analog.mqflags = 0;
	packet.type = SR_DF_ANALOG;
	packet.payload = &analog;
	sr_session_send(devc->cb_data, &packet);
	devc->num_samples++;

}

static void handle_line(const struct sr_dev_inst *sdi)
{
	struct dev_context *devc;
	struct sr_serial_dev_inst *serial;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog *analog;
	int num_tokens, n, i;
	char cmd[16], **tokens;

	devc = sdi->priv;
	serial = sdi->conn;
	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]) {
		if (devc->profile->model == FLUKE_187) {
			devc->expect_response = FALSE;
			analog = handle_qm_18x(sdi, tokens);
		} else if (devc->profile->model == FLUKE_287) {
			devc->expect_response = FALSE;
			analog = handle_qm_28x(sdi, tokens);
		} else if (devc->profile->model == FLUKE_190) {
			devc->expect_response = FALSE;
			for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
			if (num_tokens >= 7) {
				/* Response to QM: this is a comma-separated list of
				 * fields with metadata about the measurement. This
				 * format can return multiple sets of metadata,
				 * split into sets of 7 tokens each. */
				devc->meas_type = 0;
				for (i = 0; i < num_tokens; i += 7)
					handle_qm_19x_meta(sdi, tokens + i);
				if (devc->meas_type) {
					/* Slip the request in now, before the main
					 * timer loop asks for metadata again. */
					n = sprintf(cmd, "QM %d\r", devc->meas_type);
					if (serial_write(serial, cmd, n) == -1)
						sr_err("Unable to send QM (measurement): %s.",
								strerror(errno));
				}
			} else {
				/* Response to QM <n> measurement request. */
				handle_qm_19x_data(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;
	struct sr_serial_dev_inst *serial;
	int len;
	int64_t now, elapsed;

	(void)fd;

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

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

	serial = sdi->conn;
	if (revents == G_IO_IN) {
		/* Serial data arrived. */
		while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
			len = serial_read(serial, 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->limit_samples && 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 easier to recover from any
	 * out-of-sync or temporary disconnect issues. */
	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
			|| elapsed > devc->profile->timeout) {
		if (serial_write(serial, "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	1	/*
50985c20	2	* This file is part of the libsigrok project.
d38d2ef0 BV	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
d38d2ef0 BV	20	#include <stdlib.h>
	21	#include <math.h>
	22	#include <string.h>
	23	#include <errno.h>
4cea0ff7 BV	24	#include <glib.h>
	25	#include "libsigrok.h"
	26	#include "libsigrok-internal.h"
	27	#include "fluke-dmm.h"
d38d2ef0	28
4cea0ff7	29	static struct sr_datafeed_analog handle_qm_18x(const struct sr_dev_inst sdi,
fe31f8b9 BV	30	char **tokens)
	31	{
	32	struct sr_datafeed_analog *analog;
	33	float fvalue;
	34	char e, u;
	35	gboolean is_oor;
	36
4cea0ff7	37	if (strcmp(tokens[0], "QM") \|\| !tokens[1])
fe31f8b9 BV	38	return NULL;
	39
	40	if ((e = strstr(tokens[1], "Out of range"))) {
	41	is_oor = TRUE;
	42	fvalue = -1;
	43	} else {
	44	is_oor = FALSE;
	45	fvalue = strtof(tokens[1], &e);
	46	if (fvalue == 0.0 && e == tokens[1]) {
	47	/* Happens all the time, when switching modes. */
31d84da3	48	sr_dbg("Invalid float.");
fe31f8b9 BV	49	return NULL;
	50	}
	51	}
	52	while(e && e == ' ')
	53	e++;
	54
69e19dd7 BV	55	if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
	56	return NULL;
	57	if (!(analog->data = g_try_malloc(sizeof(float))))
	58	return NULL;
	59	analog->probes = sdi->probes;
fe31f8b9	60	analog->num_samples = 1;
fe31f8b9 BV	61	if (is_oor)
	62	*analog->data = NAN;
	63	else
	64	*analog->data = fvalue;
	65	analog->mq = -1;
	66
	67	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
	68	analog->mq = SR_MQ_VOLTAGE;
	69	analog->unit = SR_UNIT_VOLT;
	70	if (!is_oor && e[0] == 'm')
	71	*analog->data /= 1000;
	72	/* This catches "V AC", "V DC" and "V AC+DC". */
	73	if (strstr(u, "AC"))
	74	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	75	if (strstr(u, "DC"))
	76	analog->mqflags \|= SR_MQFLAG_DC;
	77	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
	78	analog->mq = SR_MQ_VOLTAGE;
	79	if (u[2] == 'm')
	80	analog->unit = SR_UNIT_DECIBEL_MW;
	81	else
	82	analog->unit = SR_UNIT_DECIBEL_VOLT;
	83	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	84	} else if ((u = strstr(e, "Ohms"))) {
	85	analog->mq = SR_MQ_RESISTANCE;
	86	analog->unit = SR_UNIT_OHM;
	87	if (is_oor)
	88	*analog->data = INFINITY;
	89	else if (e[0] == 'k')
	90	analog->data = 1000;
	91	else if (e[0] == 'M')
	92	analog->data = 1000000;
	93	} else if (!strcmp(e, "nS")) {
	94	analog->mq = SR_MQ_CONDUCTANCE;
	95	analog->unit = SR_UNIT_SIEMENS;
	96	*analog->data /= 1e+9;
	97	} else if ((u = strstr(e, "Farads"))) {
	98	analog->mq = SR_MQ_CAPACITANCE;
	99	analog->unit = SR_UNIT_FARAD;
	100	if (!is_oor) {
	101	if (e[0] == 'm')
	102	*analog->data /= 1e+3;
	103	else if (e[0] == 'u')
	104	*analog->data /= 1e+6;
	105	else if (e[0] == 'n')
	106	*analog->data /= 1e+9;
	107	}
	108	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
	109	analog->mq = SR_MQ_TEMPERATURE;
	110	if (u[4] == 'C')
	111	analog->unit = SR_UNIT_CELSIUS;
	112	else
	113	analog->unit = SR_UNIT_FAHRENHEIT;
	114	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
	115	analog->mq = SR_MQ_CURRENT;
	116	analog->unit = SR_UNIT_AMPERE;
	117	/* This catches "A AC", "A DC" and "A AC+DC". */
	118	if (strstr(u, "AC"))
	119	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	120	if (strstr(u, "DC"))
	121	analog->mqflags \|= SR_MQFLAG_DC;
	122	if (!is_oor) {
	123	if (e[0] == 'm')
	124	*analog->data /= 1e+3;
125	else if (e[0] == 'u')
126	*analog->data /= 1e+6;
127	}
128	} else if ((u = strstr(e, "Hz"))) {
129	analog->mq = SR_MQ_FREQUENCY;
130	analog->unit = SR_UNIT_HERTZ;
131	if (e[0] == 'k')
132	analog->data = 1e+3;
133	} else if (!strcmp(e, "%")) {
134	analog->mq = SR_MQ_DUTY_CYCLE;
135	analog->unit = SR_UNIT_PERCENTAGE;
136	} else if ((u = strstr(e, "ms"))) {
137	analog->mq = SR_MQ_PULSE_WIDTH;
138	analog->unit = SR_UNIT_SECOND;
139	*analog->data /= 1e+3;
140	}
141
142	if (analog->mq == -1) {
143	/* Not a valid measurement. */
144	g_free(analog->data);
145	g_free(analog);
146	analog = NULL;
147	}
148
149	return analog;
150	}
151
4cea0ff7	152	static struct sr_datafeed_analog handle_qm_28x(const struct sr_dev_inst sdi,
d38d2ef0 BV	153	char **tokens)
	154	{
	155	struct sr_datafeed_analog *analog;
	156	float fvalue;
	157	char *eptr;
	158
4cea0ff7 BV	159	if (!tokens[1])
	160	return NULL;
	161
d38d2ef0 BV	162	fvalue = strtof(tokens[0], &eptr);
d38d2ef0 BV	163	if (fvalue == 0.0 && eptr == tokens[0]) {
31d84da3	164	sr_err("Invalid float.");
d38d2ef0 BV	165	return NULL;
	166	}
	167
69e19dd7 BV	168	if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
	169	return NULL;
	170	if (!(analog->data = g_try_malloc(sizeof(float))))
	171	return NULL;
	172	analog->probes = sdi->probes;
d38d2ef0	173	analog->num_samples = 1;
d38d2ef0 BV	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
11fb7110 BV	264	static void handle_qm_19x_meta(const struct sr_dev_inst sdi, char *tokens)
	265	{
	266	struct dev_context *devc;
	267	int meas_type, meas_unit, meas_char, i;
	268
	269	/* Make sure we have 7 valid tokens. */
	270	for (i = 0; tokens[i] && i < 7; i++);
	271	if (i != 7)
	272	return;
	273
	274	if (strcmp(tokens[1], "1"))
	275	/* Invalid measurement. */
	276	return;
	277
	278	if (strcmp(tokens[2], "3"))
	279	/* Only interested in input from the meter mode source. */
	280	return;
	281
	282	devc = sdi->priv;
	283
	284	/* Measurement type 11 == absolute, 19 = relative */
	285	meas_type = strtol(tokens[0], NULL, 10);
	286	if (meas_type != 11 && meas_type != 19)
	287	/* Device is in some mode we don't support. */
	288	return;
	289
	290	/* We might get metadata for absolute and relative mode (if the device
	291	* is in relative mode). In that case, relative takes precedence. */
	292	if (meas_type == 11 && devc->meas_type == 19)
	293	return;
	294
	295	meas_unit = strtol(tokens[3], NULL, 10);
	296	if (meas_unit == 0)
	297	/* Device is turned off. Really. */
	298	return;
	299	meas_char = strtol(tokens[4], NULL, 10);
	300
	301	devc->mq = devc->unit = -1;
	302	devc->mqflags = 0;
	303	switch (meas_unit) {
	304	case 1:
	305	devc->mq = SR_MQ_VOLTAGE;
	306	devc->unit = SR_UNIT_VOLT;
	307	if (meas_char == 1)
	308	devc->mqflags \|= SR_MQFLAG_DC;
	309	else if (meas_char == 2)
	310	devc->mqflags \|= SR_MQFLAG_AC;
	311	else if (meas_char == 3)
	312	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	313	else if (meas_char == 15)
	314	devc->mqflags \|= SR_MQFLAG_DIODE;
	315	break;
	316	case 2:
	317	devc->mq = SR_MQ_CURRENT;
	318	devc->unit = SR_UNIT_AMPERE;
	319	if (meas_char == 1)
	320	devc->mqflags \|= SR_MQFLAG_DC;
	321	else if (meas_char == 2)
	322	devc->mqflags \|= SR_MQFLAG_AC;
	323	else if (meas_char == 3)
	324	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	325	break;
	326	case 3:
	327	if (meas_char == 1) {
328	devc->mq = SR_MQ_RESISTANCE;
329	devc->unit = SR_UNIT_OHM;
330	} else if (meas_char == 16) {
331	devc->mq = SR_MQ_CONTINUITY;
332	devc->unit = SR_UNIT_BOOLEAN;
333	}
334	break;
335	case 12:
336	devc->mq = SR_MQ_TEMPERATURE;
337	devc->unit = SR_UNIT_CELSIUS;
338	break;
339	case 13:
340	devc->mq = SR_MQ_TEMPERATURE;
341	devc->unit = SR_UNIT_FAHRENHEIT;
342	break;
343	default:
344	sr_dbg("unknown unit: %d", meas_unit);
345	}
346	if (devc->mq == -1 && devc->unit == -1)
347	return;
348
349	/* If we got here, we know how to interpret the measurement. */
350	devc->meas_type = meas_type;
351	if (meas_type == 11)
352	/* Absolute meter reading. */
353	devc->is_relative = FALSE;
354	else if (!strcmp(tokens[0], "19"))
355	/* Relative meter reading. */
356	devc->is_relative = TRUE;
357
358	}
359
360	static void handle_qm_19x_data(const struct sr_dev_inst sdi, char *tokens)
361	{
362	struct dev_context *devc;
363	struct sr_datafeed_packet packet;
364	struct sr_datafeed_analog analog;
365	float fvalue;
366	char *eptr;
367
368	if (!strcmp(tokens[0], "9.9E+37")) {
369	/* An invalid measurement shows up on the display as "OL", but
370	* comes through like this. Since comparing 38-digit floats
371	* is rather problematic, we'll cut through this here. */
372	fvalue = NAN;
373	} else {
374	fvalue = strtof(tokens[0], &eptr);
375	if (fvalue == 0.0 && eptr == tokens[0]) {
376	sr_err("Invalid float '%s'.", tokens[0]);
377	return;
378	}
379	}
380
381	devc = sdi->priv;
382	if (devc->mq == -1 \|\| devc->unit == -1)
383	/* Don't have valid metadata yet. */
384	return;
385
386
387	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
388	fvalue = INFINITY;
389	else if (devc->mq == SR_MQ_CONTINUITY) {
390	if (isnan(fvalue))
391	fvalue = 0.0;
392	else
393	fvalue = 1.0;
394	}
395
69e19dd7	396	analog.probes = sdi->probes;
11fb7110 BV	397	analog.num_samples = 1;
	398	analog.data = &fvalue;
	399	analog.mq = devc->mq;
	400	analog.unit = devc->unit;
	401	analog.mqflags = 0;
	402	packet.type = SR_DF_ANALOG;
	403	packet.payload = &analog;
	404	sr_session_send(devc->cb_data, &packet);
	405	devc->num_samples++;
	406
	407	}
	408
d38d2ef0 BV	409	static void handle_line(const struct sr_dev_inst *sdi)
	410	{
	411	struct dev_context *devc;
919681f0	412	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	413	struct sr_datafeed_packet packet;
d38d2ef0 BV	414	struct sr_datafeed_analog *analog;
11fb7110 BV	415	int num_tokens, n, i;
11fb7110 BV	416	char cmd[16], **tokens;
d38d2ef0 BV	417
d38d2ef0 BV	418	devc = sdi->priv;
919681f0	419	serial = sdi->conn;
31d84da3	420	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	421
	422	if (devc->buflen == 1) {
	423	if (devc->buf[0] != '0') {
	424	/* Not just a CMD_ACK from the query command. */
31d84da3	425	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	426	devc->expect_response = FALSE;
	427	}
	428	devc->buflen = 0;
	429	return;
	430	}
	431
	432	analog = NULL;
	433	tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7	434	if (tokens[0]) {
fe31f8b9 BV	435	if (devc->profile->model == FLUKE_187) {
fe31f8b9 BV	436	devc->expect_response = FALSE;
4cea0ff7	437	analog = handle_qm_18x(sdi, tokens);
fe31f8b9	438	} else if (devc->profile->model == FLUKE_287) {
d38d2ef0	439	devc->expect_response = FALSE;
4cea0ff7	440	analog = handle_qm_28x(sdi, tokens);
11fb7110 BV	441	} else if (devc->profile->model == FLUKE_190) {
	442	devc->expect_response = FALSE;
	443	for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
	444	if (num_tokens >= 7) {
	445	/* Response to QM: this is a comma-separated list of
	446	* fields with metadata about the measurement. This
	447	* format can return multiple sets of metadata,
	448	* split into sets of 7 tokens each. */
	449	devc->meas_type = 0;
	450	for (i = 0; i < num_tokens; i += 7)
	451	handle_qm_19x_meta(sdi, tokens + i);
	452	if (devc->meas_type) {
	453	/* Slip the request in now, before the main
	454	* timer loop asks for metadata again. */
	455	n = sprintf(cmd, "QM %d\r", devc->meas_type);
919681f0	456	if (serial_write(serial, cmd, n) == -1)
11fb7110 BV	457	sr_err("Unable to send QM (measurement): %s.",
	458	strerror(errno));
	459	}
	460	} else {
	461	/* Response to QM <n> measurement request. */
	462	handle_qm_19x_data(sdi, tokens);
	463	}
d38d2ef0	464	}
d38d2ef0 BV	465	}
	466	g_strfreev(tokens);
	467	devc->buflen = 0;
	468
	469	if (analog) {
	470	/* Got a measurement. */
d38d2ef0 BV	471	packet.type = SR_DF_ANALOG;
	472	packet.payload = analog;
	473	sr_session_send(devc->cb_data, &packet);
	474	devc->num_samples++;
	475	g_free(analog->data);
	476	g_free(analog);
	477	}
	478
	479	}
	480
	481	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	482	{
642e9d62	483	struct sr_dev_inst *sdi;
d38d2ef0	484	struct dev_context *devc;
919681f0	485	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	486	int len;
	487	int64_t now, elapsed;
	488
58d03f03 BV	489	(void)fd;
58d03f03 BV	490
d38d2ef0 BV	491	if (!(sdi = cb_data))
	492	return TRUE;
	493
	494	if (!(devc = sdi->priv))
	495	return TRUE;
	496
919681f0	497	serial = sdi->conn;
d38d2ef0 BV	498	if (revents == G_IO_IN) {
	499	/* Serial data arrived. */
	500	while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
919681f0	501	len = serial_read(serial, devc->buf + devc->buflen, 1);
d38d2ef0 BV	502	if (len < 1)
	503	break;
	504	devc->buflen++;
	505	*(devc->buf + devc->buflen) = '\0';
	506	if (*(devc->buf + devc->buflen - 1) == '\r') {
	507	*(devc->buf + --devc->buflen) = '\0';
	508	handle_line(sdi);
	509	break;
	510	}
	511	}
	512	}
	513
2f1e5c7c	514	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
d38d2ef0 BV	515	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	516	return TRUE;
	517	}
	518
	519	now = g_get_monotonic_time() / 1000;
	520	elapsed = now - devc->cmd_sent_at;
	521	/* Send query command at poll_period interval, or after 1 second
d4b11de0 BV	522	* has elapsed. This will make it easier to recover from any
d4b11de0 BV	523	* out-of-sync or temporary disconnect issues. */
d38d2ef0	524	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0	525	\|\| elapsed > devc->profile->timeout) {
919681f0	526	if (serial_write(serial, "QM\r", 3) == -1)
31d84da3	527	sr_err("Unable to send QM: %s.", strerror(errno));
d38d2ef0 BV	528	devc->cmd_sent_at = now;
	529	devc->expect_response = TRUE;
	530	}
	531
	532	return TRUE;
	533	}