[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 <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
d38d2ef0 BV	20	#include <stdlib.h>
	21	#include <math.h>
	22	#include <string.h>
4cea0ff7	23	#include <glib.h>
c1aae900	24	#include <libsigrok/libsigrok.h>
4cea0ff7 BV	25	#include "libsigrok-internal.h"
4cea0ff7 BV	26	#include "fluke-dmm.h"
d38d2ef0	27
4cea0ff7	28	static struct sr_datafeed_analog handle_qm_18x(const struct sr_dev_inst sdi,
fe31f8b9 BV	29	char **tokens)
	30	{
	31	struct sr_datafeed_analog *analog;
	32	float fvalue;
	33	char e, u;
	34	gboolean is_oor;
	35
4cea0ff7	36	if (strcmp(tokens[0], "QM") \|\| !tokens[1])
fe31f8b9 BV	37	return NULL;
	38
	39	if ((e = strstr(tokens[1], "Out of range"))) {
	40	is_oor = TRUE;
	41	fvalue = -1;
0c5f2abc	42	while (e && e != '.')
357e341d	43	e++;
fe31f8b9 BV	44	} else {
fe31f8b9 BV	45	is_oor = FALSE;
357e341d BV	46	/* Delimit the float, since sr_atof_ascii() wants only
	47	* a valid float here. */
	48	e = tokens[1];
0c5f2abc	49	while (e && e != ' ')
357e341d BV	50	e++;
	51	*e++ = '\0';
	52	if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK \|\| fvalue == 0.0) {
fe31f8b9	53	/* Happens all the time, when switching modes. */
31d84da3	54	sr_dbg("Invalid float.");
fe31f8b9 BV	55	return NULL;
	56	}
	57	}
0c5f2abc	58	while (e && e == ' ')
fe31f8b9 BV	59	e++;
fe31f8b9 BV	60
a95f142e UH	61	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
a95f142e UH	62	analog->data = g_malloc(sizeof(float));
ba7dd8bb	63	analog->channels = sdi->channels;
fe31f8b9	64	analog->num_samples = 1;
fe31f8b9 BV	65	if (is_oor)
	66	*analog->data = NAN;
	67	else
	68	*analog->data = fvalue;
	69	analog->mq = -1;
	70
	71	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
	72	analog->mq = SR_MQ_VOLTAGE;
	73	analog->unit = SR_UNIT_VOLT;
	74	if (!is_oor && e[0] == 'm')
	75	*analog->data /= 1000;
	76	/* This catches "V AC", "V DC" and "V AC+DC". */
	77	if (strstr(u, "AC"))
	78	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	79	if (strstr(u, "DC"))
	80	analog->mqflags \|= SR_MQFLAG_DC;
	81	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
	82	analog->mq = SR_MQ_VOLTAGE;
	83	if (u[2] == 'm')
	84	analog->unit = SR_UNIT_DECIBEL_MW;
	85	else
	86	analog->unit = SR_UNIT_DECIBEL_VOLT;
	87	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	88	} else if ((u = strstr(e, "Ohms"))) {
	89	analog->mq = SR_MQ_RESISTANCE;
	90	analog->unit = SR_UNIT_OHM;
	91	if (is_oor)
	92	*analog->data = INFINITY;
	93	else if (e[0] == 'k')
	94	analog->data = 1000;
	95	else if (e[0] == 'M')
	96	analog->data = 1000000;
	97	} else if (!strcmp(e, "nS")) {
	98	analog->mq = SR_MQ_CONDUCTANCE;
	99	analog->unit = SR_UNIT_SIEMENS;
	100	*analog->data /= 1e+9;
	101	} else if ((u = strstr(e, "Farads"))) {
	102	analog->mq = SR_MQ_CAPACITANCE;
	103	analog->unit = SR_UNIT_FARAD;
	104	if (!is_oor) {
	105	if (e[0] == 'm')
	106	*analog->data /= 1e+3;
	107	else if (e[0] == 'u')
	108	*analog->data /= 1e+6;
	109	else if (e[0] == 'n')
	110	*analog->data /= 1e+9;
	111	}
	112	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
	113	analog->mq = SR_MQ_TEMPERATURE;
	114	if (u[4] == 'C')
	115	analog->unit = SR_UNIT_CELSIUS;
	116	else
	117	analog->unit = SR_UNIT_FAHRENHEIT;
	118	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
	119	analog->mq = SR_MQ_CURRENT;
	120	analog->unit = SR_UNIT_AMPERE;
	121	/* This catches "A AC", "A DC" and "A AC+DC". */
	122	if (strstr(u, "AC"))
	123	analog->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
	124	if (strstr(u, "DC"))
	125	analog->mqflags \|= SR_MQFLAG_DC;
	126	if (!is_oor) {
	127	if (e[0] == 'm')
	128	*analog->data /= 1e+3;
129	else if (e[0] == 'u')
130	*analog->data /= 1e+6;
131	}
132	} else if ((u = strstr(e, "Hz"))) {
133	analog->mq = SR_MQ_FREQUENCY;
134	analog->unit = SR_UNIT_HERTZ;
135	if (e[0] == 'k')
136	analog->data = 1e+3;
137	} else if (!strcmp(e, "%")) {
138	analog->mq = SR_MQ_DUTY_CYCLE;
139	analog->unit = SR_UNIT_PERCENTAGE;
140	} else if ((u = strstr(e, "ms"))) {
141	analog->mq = SR_MQ_PULSE_WIDTH;
142	analog->unit = SR_UNIT_SECOND;
143	*analog->data /= 1e+3;
144	}
145
146	if (analog->mq == -1) {
147	/* Not a valid measurement. */
148	g_free(analog->data);
149	g_free(analog);
150	analog = NULL;
151	}
152
153	return analog;
154	}
155
4cea0ff7	156	static struct sr_datafeed_analog handle_qm_28x(const struct sr_dev_inst sdi,
d38d2ef0 BV	157	char **tokens)
	158	{
	159	struct sr_datafeed_analog *analog;
	160	float fvalue;
d38d2ef0	161
4cea0ff7 BV	162	if (!tokens[1])
	163	return NULL;
	164
357e341d BV	165	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
357e341d BV	166	sr_err("Invalid float '%s'.", tokens[0]);
d38d2ef0 BV	167	return NULL;
	168	}
	169
a95f142e UH	170	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
a95f142e UH	171	analog->data = g_malloc(sizeof(float));
ba7dd8bb	172	analog->channels = sdi->channels;
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;
11fb7110 BV	366
	367	if (!strcmp(tokens[0], "9.9E+37")) {
	368	/* An invalid measurement shows up on the display as "OL", but
	369	* comes through like this. Since comparing 38-digit floats
	370	* is rather problematic, we'll cut through this here. */
	371	fvalue = NAN;
	372	} else {
357e341d	373	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
11fb7110 BV	374	sr_err("Invalid float '%s'.", tokens[0]);
	375	return;
	376	}
	377	}
	378
	379	devc = sdi->priv;
	380	if (devc->mq == -1 \|\| devc->unit == -1)
	381	/* Don't have valid metadata yet. */
	382	return;
	383
11fb7110 BV	384	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
	385	fvalue = INFINITY;
	386	else if (devc->mq == SR_MQ_CONTINUITY) {
	387	if (isnan(fvalue))
	388	fvalue = 0.0;
	389	else
	390	fvalue = 1.0;
	391	}
	392
ba7dd8bb	393	analog.channels = sdi->channels;
11fb7110 BV	394	analog.num_samples = 1;
	395	analog.data = &fvalue;
	396	analog.mq = devc->mq;
	397	analog.unit = devc->unit;
	398	analog.mqflags = 0;
	399	packet.type = SR_DF_ANALOG;
	400	packet.payload = &analog;
	401	sr_session_send(devc->cb_data, &packet);
	402	devc->num_samples++;
	403
	404	}
	405
d38d2ef0 BV	406	static void handle_line(const struct sr_dev_inst *sdi)
	407	{
	408	struct dev_context *devc;
919681f0	409	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	410	struct sr_datafeed_packet packet;
d38d2ef0 BV	411	struct sr_datafeed_analog *analog;
11fb7110 BV	412	int num_tokens, n, i;
11fb7110 BV	413	char cmd[16], **tokens;
d38d2ef0 BV	414
d38d2ef0 BV	415	devc = sdi->priv;
919681f0	416	serial = sdi->conn;
31d84da3	417	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	418
	419	if (devc->buflen == 1) {
	420	if (devc->buf[0] != '0') {
	421	/* Not just a CMD_ACK from the query command. */
31d84da3	422	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	423	devc->expect_response = FALSE;
	424	}
	425	devc->buflen = 0;
	426	return;
	427	}
	428
	429	analog = NULL;
	430	tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7	431	if (tokens[0]) {
0bc3ab92	432	if (devc->profile->model == FLUKE_187 \|\| devc->profile->model == FLUKE_189) {
fe31f8b9	433	devc->expect_response = FALSE;
4cea0ff7	434	analog = handle_qm_18x(sdi, tokens);
fe31f8b9	435	} else if (devc->profile->model == FLUKE_287) {
d38d2ef0	436	devc->expect_response = FALSE;
4cea0ff7	437	analog = handle_qm_28x(sdi, tokens);
11fb7110 BV	438	} else if (devc->profile->model == FLUKE_190) {
	439	devc->expect_response = FALSE;
	440	for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
	441	if (num_tokens >= 7) {
	442	/* Response to QM: this is a comma-separated list of
	443	* fields with metadata about the measurement. This
	444	* format can return multiple sets of metadata,
	445	* split into sets of 7 tokens each. */
	446	devc->meas_type = 0;
	447	for (i = 0; i < num_tokens; i += 7)
	448	handle_qm_19x_meta(sdi, tokens + i);
	449	if (devc->meas_type) {
	450	/* Slip the request in now, before the main
	451	* timer loop asks for metadata again. */
	452	n = sprintf(cmd, "QM %d\r", devc->meas_type);
20401400	453	if (serial_write_blocking(serial, cmd, n, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	454	sr_err("Unable to send QM (measurement).");
11fb7110 BV	455	}
	456	} else {
	457	/* Response to QM <n> measurement request. */
	458	handle_qm_19x_data(sdi, tokens);
	459	}
d38d2ef0	460	}
d38d2ef0 BV	461	}
	462	g_strfreev(tokens);
	463	devc->buflen = 0;
	464
	465	if (analog) {
	466	/* Got a measurement. */
d38d2ef0 BV	467	packet.type = SR_DF_ANALOG;
	468	packet.payload = analog;
	469	sr_session_send(devc->cb_data, &packet);
	470	devc->num_samples++;
	471	g_free(analog->data);
	472	g_free(analog);
	473	}
	474
	475	}
	476
	477	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	478	{
642e9d62	479	struct sr_dev_inst *sdi;
d38d2ef0	480	struct dev_context *devc;
919681f0	481	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	482	int len;
	483	int64_t now, elapsed;
	484
58d03f03 BV	485	(void)fd;
58d03f03 BV	486
d38d2ef0 BV	487	if (!(sdi = cb_data))
	488	return TRUE;
	489
	490	if (!(devc = sdi->priv))
	491	return TRUE;
	492
919681f0	493	serial = sdi->conn;
d38d2ef0 BV	494	if (revents == G_IO_IN) {
d38d2ef0 BV	495	/* Serial data arrived. */
0c5f2abc	496	while (FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
707fa85a	497	len = serial_read_nonblocking(serial, devc->buf + devc->buflen, 1);
d38d2ef0 BV	498	if (len < 1)
	499	break;
	500	devc->buflen++;
	501	*(devc->buf + devc->buflen) = '\0';
	502	if (*(devc->buf + devc->buflen - 1) == '\r') {
	503	*(devc->buf + --devc->buflen) = '\0';
	504	handle_line(sdi);
	505	break;
	506	}
	507	}
	508	}
	509
2f1e5c7c	510	if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
d38d2ef0 BV	511	sdi->driver->dev_acquisition_stop(sdi, cb_data);
	512	return TRUE;
	513	}
	514
	515	now = g_get_monotonic_time() / 1000;
	516	elapsed = now - devc->cmd_sent_at;
	517	/* Send query command at poll_period interval, or after 1 second
d4b11de0 BV	518	* has elapsed. This will make it easier to recover from any
d4b11de0 BV	519	* out-of-sync or temporary disconnect issues. */
d38d2ef0	520	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0	521	\|\| elapsed > devc->profile->timeout) {
20401400	522	if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	523	sr_err("Unable to send QM.");
d38d2ef0 BV	524	devc->cmd_sent_at = now;
	525	devc->expect_response = TRUE;
	526	}
	527
	528	return TRUE;
	529	}