[libsigrok.git] / src / 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 <config.h>
#include <stdlib.h>
#include <math.h>
#include <string.h>
#include <glib.h>
#include <libsigrok/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;
		while (*e && *e != '.')
			e++;
	} else {
		is_oor = FALSE;
		/* Delimit the float, since sr_atof_ascii() wants only
		 * a valid float here. */
		e = tokens[1];
		while (*e && *e != ' ')
			e++;
		*e++ = '\0';
		if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK || fvalue == 0.0) {
			/* Happens all the time, when switching modes. */
			sr_dbg("Invalid float.");
			return NULL;
		}
	}
	while (*e && *e == ' ')
		e++;

	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
	analog->data = g_malloc(sizeof(float));
	analog->channels = sdi->channels;
	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;

	if (!tokens[1])
		return NULL;

	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK || fvalue == 0.0) {
		sr_err("Invalid float '%s'.", tokens[0]);
		return NULL;
	}

	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
	analog->data = g_malloc(sizeof(float));
	analog->channels = sdi->channels;
	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;

	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 {
		if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK || fvalue == 0.0) {
			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.channels = sdi->channels;
	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->profile->model == FLUKE_189) {
			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_blocking(serial, cmd, n, SERIAL_WRITE_TIMEOUT_MS) < 0)
						sr_err("Unable to send QM (measurement).");
				}
			} 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_nonblocking(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_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0)
			sr_err("Unable to send QM.");
		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
6ec6c43b	20	#include <config.h>
d38d2ef0 BV	21	#include <stdlib.h>
	22	#include <math.h>
	23	#include <string.h>
4cea0ff7	24	#include <glib.h>
c1aae900	25	#include <libsigrok/libsigrok.h>
4cea0ff7 BV	26	#include "libsigrok-internal.h"
4cea0ff7 BV	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;
0c5f2abc	43	while (e && e != '.')
357e341d	44	e++;
fe31f8b9 BV	45	} else {
fe31f8b9 BV	46	is_oor = FALSE;
357e341d BV	47	/* Delimit the float, since sr_atof_ascii() wants only
	48	* a valid float here. */
	49	e = tokens[1];
0c5f2abc	50	while (e && e != ' ')
357e341d BV	51	e++;
	52	*e++ = '\0';
	53	if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK \|\| fvalue == 0.0) {
fe31f8b9	54	/* Happens all the time, when switching modes. */
31d84da3	55	sr_dbg("Invalid float.");
fe31f8b9 BV	56	return NULL;
	57	}
	58	}
0c5f2abc	59	while (e && e == ' ')
fe31f8b9 BV	60	e++;
fe31f8b9 BV	61
a95f142e UH	62	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
a95f142e UH	63	analog->data = g_malloc(sizeof(float));
ba7dd8bb	64	analog->channels = sdi->channels;
fe31f8b9	65	analog->num_samples = 1;
fe31f8b9 BV	66	if (is_oor)
	67	*analog->data = NAN;
	68	else
	69	*analog->data = fvalue;
	70	analog->mq = -1;
	71
	72	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
	73	analog->mq = SR_MQ_VOLTAGE;
	74	analog->unit = SR_UNIT_VOLT;
	75	if (!is_oor && e[0] == 'm')
	76	*analog->data /= 1000;
	77	/* This catches "V AC", "V DC" and "V AC+DC". */
	78	if (strstr(u, "AC"))
	79	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	80	if (strstr(u, "DC"))
	81	analog->mqflags \|= SR_MQFLAG_DC;
	82	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
	83	analog->mq = SR_MQ_VOLTAGE;
	84	if (u[2] == 'm')
	85	analog->unit = SR_UNIT_DECIBEL_MW;
	86	else
	87	analog->unit = SR_UNIT_DECIBEL_VOLT;
	88	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	89	} else if ((u = strstr(e, "Ohms"))) {
	90	analog->mq = SR_MQ_RESISTANCE;
	91	analog->unit = SR_UNIT_OHM;
	92	if (is_oor)
	93	*analog->data = INFINITY;
	94	else if (e[0] == 'k')
	95	analog->data = 1000;
	96	else if (e[0] == 'M')
	97	analog->data = 1000000;
	98	} else if (!strcmp(e, "nS")) {
	99	analog->mq = SR_MQ_CONDUCTANCE;
	100	analog->unit = SR_UNIT_SIEMENS;
	101	*analog->data /= 1e+9;
	102	} else if ((u = strstr(e, "Farads"))) {
	103	analog->mq = SR_MQ_CAPACITANCE;
	104	analog->unit = SR_UNIT_FARAD;
	105	if (!is_oor) {
	106	if (e[0] == 'm')
	107	*analog->data /= 1e+3;
	108	else if (e[0] == 'u')
	109	*analog->data /= 1e+6;
	110	else if (e[0] == 'n')
	111	*analog->data /= 1e+9;
	112	}
	113	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
	114	analog->mq = SR_MQ_TEMPERATURE;
	115	if (u[4] == 'C')
	116	analog->unit = SR_UNIT_CELSIUS;
	117	else
	118	analog->unit = SR_UNIT_FAHRENHEIT;
	119	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
	120	analog->mq = SR_MQ_CURRENT;
	121	analog->unit = SR_UNIT_AMPERE;
	122	/* This catches "A AC", "A DC" and "A AC+DC". */
	123	if (strstr(u, "AC"))
	124	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	125	if (strstr(u, "DC"))
	126	analog->mqflags \|= SR_MQFLAG_DC;
	127	if (!is_oor) {
	128	if (e[0] == 'm')
	129	*analog->data /= 1e+3;
130	else if (e[0] == 'u')
131	*analog->data /= 1e+6;
132	}
133	} else if ((u = strstr(e, "Hz"))) {
134	analog->mq = SR_MQ_FREQUENCY;
135	analog->unit = SR_UNIT_HERTZ;
136	if (e[0] == 'k')
137	analog->data = 1e+3;
138	} else if (!strcmp(e, "%")) {
139	analog->mq = SR_MQ_DUTY_CYCLE;
140	analog->unit = SR_UNIT_PERCENTAGE;
141	} else if ((u = strstr(e, "ms"))) {
142	analog->mq = SR_MQ_PULSE_WIDTH;
143	analog->unit = SR_UNIT_SECOND;
144	*analog->data /= 1e+3;
145	}
146
147	if (analog->mq == -1) {
148	/* Not a valid measurement. */
149	g_free(analog->data);
150	g_free(analog);
151	analog = NULL;
152	}
153
154	return analog;
155	}
156
4cea0ff7	157	static struct sr_datafeed_analog handle_qm_28x(const struct sr_dev_inst sdi,
d38d2ef0 BV	158	char **tokens)
	159	{
	160	struct sr_datafeed_analog *analog;
	161	float fvalue;
d38d2ef0	162
4cea0ff7 BV	163	if (!tokens[1])
	164	return NULL;
	165
357e341d BV	166	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
357e341d BV	167	sr_err("Invalid float '%s'.", tokens[0]);
d38d2ef0 BV	168	return NULL;
	169	}
	170
a95f142e UH	171	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
a95f142e UH	172	analog->data = g_malloc(sizeof(float));
ba7dd8bb	173	analog->channels = sdi->channels;
d38d2ef0	174	analog->num_samples = 1;
d38d2ef0 BV	175	*analog->data = fvalue;
	176	analog->mq = -1;
	177
	178	if (!strcmp(tokens[1], "VAC") \|\| !strcmp(tokens[1], "VDC")) {
	179	analog->mq = SR_MQ_VOLTAGE;
	180	analog->unit = SR_UNIT_VOLT;
	181	if (!strcmp(tokens[2], "NORMAL")) {
	182	if (tokens[1][1] == 'A') {
	183	analog->mqflags \|= SR_MQFLAG_AC;
	184	analog->mqflags \|= SR_MQFLAG_RMS;
	185	} else
	186	analog->mqflags \|= SR_MQFLAG_DC;
	187	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	188	*analog->data = NAN;
	189	} else
	190	analog->mq = -1;
a28dac0a	191	} else if (!strcmp(tokens[1], "dBV") \|\| !strcmp(tokens[1], "dBm")) {
2c04dede BV	192	analog->mq = SR_MQ_VOLTAGE;
	193	if (tokens[1][2] == 'm')
	194	analog->unit = SR_UNIT_DECIBEL_MW;
	195	else
	196	analog->unit = SR_UNIT_DECIBEL_VOLT;
	197	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
a28dac0a	198	} else if (!strcmp(tokens[1], "CEL") \|\| !strcmp(tokens[1], "FAR")) {
d38d2ef0 BV	199	if (!strcmp(tokens[2], "NORMAL")) {
	200	analog->mq = SR_MQ_TEMPERATURE;
	201	if (tokens[1][0] == 'C')
fe31f8b9	202	analog->unit = SR_UNIT_CELSIUS;
d38d2ef0 BV	203	else
	204	analog->unit = SR_UNIT_FAHRENHEIT;
	205	}
a28dac0a	206	} else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0 BV	207	if (!strcmp(tokens[3], "NONE")) {
	208	analog->mq = SR_MQ_RESISTANCE;
	209	analog->unit = SR_UNIT_OHM;
	210	if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	211	*analog->data = INFINITY;
	212	} else if (strcmp(tokens[2], "NORMAL"))
	213	analog->mq = -1;
	214	} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
	215	analog->mq = SR_MQ_CONTINUITY;
	216	analog->unit = SR_UNIT_BOOLEAN;
	217	*analog->data = 0.0;
	218	} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
	219	analog->mq = SR_MQ_CONTINUITY;
	220	analog->unit = SR_UNIT_BOOLEAN;
	221	*analog->data = 1.0;
	222	}
a28dac0a	223	} else if (!strcmp(tokens[1], "F")
d38d2ef0 BV	224	&& !strcmp(tokens[2], "NORMAL")
	225	&& !strcmp(tokens[3], "NONE")) {
	226	analog->mq = SR_MQ_CAPACITANCE;
	227	analog->unit = SR_UNIT_FARAD;
	228	} else if (!strcmp(tokens[1], "AAC") \|\| !strcmp(tokens[1], "ADC")) {
	229	analog->mq = SR_MQ_CURRENT;
	230	analog->unit = SR_UNIT_AMPERE;
d38d2ef0 BV	231	if (!strcmp(tokens[2], "NORMAL")) {
	232	if (tokens[1][1] == 'A') {
	233	analog->mqflags \|= SR_MQFLAG_AC;
	234	analog->mqflags \|= SR_MQFLAG_RMS;
	235	} else
	236	analog->mqflags \|= SR_MQFLAG_DC;
	237	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
	238	*analog->data = NAN;
	239	} else
	240	analog->mq = -1;
	241	} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
	242	analog->mq = SR_MQ_FREQUENCY;
	243	analog->unit = SR_UNIT_HERTZ;
a28dac0a	244	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	245	analog->mq = SR_MQ_DUTY_CYCLE;
d38d2ef0 BV	246	analog->unit = SR_UNIT_PERCENTAGE;
a28dac0a	247	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	248	analog->mq = SR_MQ_PULSE_WIDTH;
d38d2ef0 BV	249	analog->unit = SR_UNIT_SECOND;
a28dac0a	250	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	251	analog->mq = SR_MQ_CONDUCTANCE;
	252	analog->unit = SR_UNIT_SIEMENS;
	253	}
	254
d38d2ef0 BV	255	if (analog->mq == -1) {
	256	/* Not a valid measurement. */
	257	g_free(analog->data);
	258	g_free(analog);
	259	analog = NULL;
	260	}
	261
	262	return analog;
	263	}
	264
11fb7110 BV	265	static void handle_qm_19x_meta(const struct sr_dev_inst sdi, char *tokens)
	266	{
	267	struct dev_context *devc;
	268	int meas_type, meas_unit, meas_char, i;
	269
	270	/* Make sure we have 7 valid tokens. */
	271	for (i = 0; tokens[i] && i < 7; i++);
	272	if (i != 7)
	273	return;
	274
	275	if (strcmp(tokens[1], "1"))
	276	/* Invalid measurement. */
	277	return;
	278
	279	if (strcmp(tokens[2], "3"))
	280	/* Only interested in input from the meter mode source. */
	281	return;
	282
	283	devc = sdi->priv;
	284
	285	/* Measurement type 11 == absolute, 19 = relative */
	286	meas_type = strtol(tokens[0], NULL, 10);
	287	if (meas_type != 11 && meas_type != 19)
	288	/* Device is in some mode we don't support. */
	289	return;
	290
	291	/* We might get metadata for absolute and relative mode (if the device
	292	* is in relative mode). In that case, relative takes precedence. */
	293	if (meas_type == 11 && devc->meas_type == 19)
	294	return;
	295
	296	meas_unit = strtol(tokens[3], NULL, 10);
	297	if (meas_unit == 0)
	298	/* Device is turned off. Really. */
	299	return;
	300	meas_char = strtol(tokens[4], NULL, 10);
	301
	302	devc->mq = devc->unit = -1;
	303	devc->mqflags = 0;
	304	switch (meas_unit) {
	305	case 1:
	306	devc->mq = SR_MQ_VOLTAGE;
	307	devc->unit = SR_UNIT_VOLT;
	308	if (meas_char == 1)
	309	devc->mqflags \|= SR_MQFLAG_DC;
	310	else if (meas_char == 2)
	311	devc->mqflags \|= SR_MQFLAG_AC;
	312	else if (meas_char == 3)
	313	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	314	else if (meas_char == 15)
	315	devc->mqflags \|= SR_MQFLAG_DIODE;
	316	break;
	317	case 2:
	318	devc->mq = SR_MQ_CURRENT;
	319	devc->unit = SR_UNIT_AMPERE;
	320	if (meas_char == 1)
	321	devc->mqflags \|= SR_MQFLAG_DC;
	322	else if (meas_char == 2)
	323	devc->mqflags \|= SR_MQFLAG_AC;
	324	else if (meas_char == 3)
	325	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	326	break;
	327	case 3:
	328	if (meas_char == 1) {
329	devc->mq = SR_MQ_RESISTANCE;
330	devc->unit = SR_UNIT_OHM;
331	} else if (meas_char == 16) {
332	devc->mq = SR_MQ_CONTINUITY;
333	devc->unit = SR_UNIT_BOOLEAN;
334	}
335	break;
336	case 12:
337	devc->mq = SR_MQ_TEMPERATURE;
338	devc->unit = SR_UNIT_CELSIUS;
339	break;
340	case 13:
341	devc->mq = SR_MQ_TEMPERATURE;
342	devc->unit = SR_UNIT_FAHRENHEIT;
343	break;
344	default:
345	sr_dbg("unknown unit: %d", meas_unit);
346	}
347	if (devc->mq == -1 && devc->unit == -1)
348	return;
349
350	/* If we got here, we know how to interpret the measurement. */
351	devc->meas_type = meas_type;
352	if (meas_type == 11)
353	/* Absolute meter reading. */
354	devc->is_relative = FALSE;
355	else if (!strcmp(tokens[0], "19"))
356	/* Relative meter reading. */
357	devc->is_relative = TRUE;
358
359	}
360
361	static void handle_qm_19x_data(const struct sr_dev_inst sdi, char *tokens)
362	{
363	struct dev_context *devc;
364	struct sr_datafeed_packet packet;
365	struct sr_datafeed_analog analog;
366	float fvalue;
11fb7110 BV	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 {
357e341d	374	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
11fb7110 BV	375	sr_err("Invalid float '%s'.", tokens[0]);
	376	return;
	377	}
	378	}
	379
	380	devc = sdi->priv;
	381	if (devc->mq == -1 \|\| devc->unit == -1)
	382	/* Don't have valid metadata yet. */
	383	return;
	384
11fb7110 BV	385	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
	386	fvalue = INFINITY;
	387	else if (devc->mq == SR_MQ_CONTINUITY) {
	388	if (isnan(fvalue))
	389	fvalue = 0.0;
	390	else
	391	fvalue = 1.0;
	392	}
	393
ba7dd8bb	394	analog.channels = sdi->channels;
11fb7110 BV	395	analog.num_samples = 1;
	396	analog.data = &fvalue;
	397	analog.mq = devc->mq;
	398	analog.unit = devc->unit;
	399	analog.mqflags = 0;
	400	packet.type = SR_DF_ANALOG;
	401	packet.payload = &analog;
	402	sr_session_send(devc->cb_data, &packet);
	403	devc->num_samples++;
	404
	405	}
	406
d38d2ef0 BV	407	static void handle_line(const struct sr_dev_inst *sdi)
	408	{
	409	struct dev_context *devc;
919681f0	410	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	411	struct sr_datafeed_packet packet;
d38d2ef0 BV	412	struct sr_datafeed_analog *analog;
11fb7110 BV	413	int num_tokens, n, i;
11fb7110 BV	414	char cmd[16], **tokens;
d38d2ef0 BV	415
d38d2ef0 BV	416	devc = sdi->priv;
919681f0	417	serial = sdi->conn;
31d84da3	418	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	419
	420	if (devc->buflen == 1) {
	421	if (devc->buf[0] != '0') {
	422	/* Not just a CMD_ACK from the query command. */
31d84da3	423	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	424	devc->expect_response = FALSE;
	425	}
	426	devc->buflen = 0;
	427	return;
	428	}
	429
	430	analog = NULL;
	431	tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7	432	if (tokens[0]) {
0bc3ab92	433	if (devc->profile->model == FLUKE_187 \|\| devc->profile->model == FLUKE_189) {
fe31f8b9	434	devc->expect_response = FALSE;
4cea0ff7	435	analog = handle_qm_18x(sdi, tokens);
fe31f8b9	436	} else if (devc->profile->model == FLUKE_287) {
d38d2ef0	437	devc->expect_response = FALSE;
4cea0ff7	438	analog = handle_qm_28x(sdi, tokens);
11fb7110 BV	439	} else if (devc->profile->model == FLUKE_190) {
	440	devc->expect_response = FALSE;
	441	for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
	442	if (num_tokens >= 7) {
	443	/* Response to QM: this is a comma-separated list of
	444	* fields with metadata about the measurement. This
	445	* format can return multiple sets of metadata,
	446	* split into sets of 7 tokens each. */
	447	devc->meas_type = 0;
	448	for (i = 0; i < num_tokens; i += 7)
	449	handle_qm_19x_meta(sdi, tokens + i);
	450	if (devc->meas_type) {
	451	/* Slip the request in now, before the main
	452	* timer loop asks for metadata again. */
	453	n = sprintf(cmd, "QM %d\r", devc->meas_type);
20401400	454	if (serial_write_blocking(serial, cmd, n, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	455	sr_err("Unable to send QM (measurement).");
11fb7110 BV	456	}
	457	} else {
	458	/* Response to QM <n> measurement request. */
	459	handle_qm_19x_data(sdi, tokens);
	460	}
d38d2ef0	461	}
d38d2ef0 BV	462	}
	463	g_strfreev(tokens);
	464	devc->buflen = 0;
	465
	466	if (analog) {
	467	/* Got a measurement. */
d38d2ef0 BV	468	packet.type = SR_DF_ANALOG;
	469	packet.payload = analog;
	470	sr_session_send(devc->cb_data, &packet);
	471	devc->num_samples++;
	472	g_free(analog->data);
	473	g_free(analog);
	474	}
	475
	476	}
	477
	478	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	479	{
642e9d62	480	struct sr_dev_inst *sdi;
d38d2ef0	481	struct dev_context *devc;
919681f0	482	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	483	int len;
	484	int64_t now, elapsed;
	485
58d03f03 BV	486	(void)fd;
58d03f03 BV	487
d38d2ef0 BV	488	if (!(sdi = cb_data))
	489	return TRUE;
	490
	491	if (!(devc = sdi->priv))
	492	return TRUE;
	493
919681f0	494	serial = sdi->conn;
d38d2ef0 BV	495	if (revents == G_IO_IN) {
d38d2ef0 BV	496	/* Serial data arrived. */
0c5f2abc	497	while (FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
707fa85a	498	len = serial_read_nonblocking(serial, devc->buf + devc->buflen, 1);
d38d2ef0 BV	499	if (len < 1)
	500	break;
	501	devc->buflen++;
	502	*(devc->buf + devc->buflen) = '\0';
	503	if (*(devc->buf + devc->buflen - 1) == '\r') {
	504	*(devc->buf + --devc->buflen) = '\0';
	505	handle_line(sdi);
	506	break;
	507	}
	508	}
	509	}
	510
2f1e5c7c	511	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
d38d2ef0 BV	512	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	513	return TRUE;
	514	}
	515
	516	now = g_get_monotonic_time() / 1000;
	517	elapsed = now - devc->cmd_sent_at;
	518	/* Send query command at poll_period interval, or after 1 second
d4b11de0 BV	519	* has elapsed. This will make it easier to recover from any
d4b11de0 BV	520	* out-of-sync or temporary disconnect issues. */
d38d2ef0	521	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0	522	\|\| elapsed > devc->profile->timeout) {
20401400	523	if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	524	sr_err("Unable to send QM.");
d38d2ef0 BV	525	devc->cmd_sent_at = now;
	526	devc->expect_response = TRUE;
	527	}
	528
	529	return TRUE;
	530	}