[libsigrok.git] / src / hardware / fluke-dmm / protocol.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 "protocol.h"

static int count_digits(const char *str)
{
	int digits;

	if (*str == '-' || *str == '+')
		str++;

	while (*str >= '0' && *str <= '9')
		str++;

	digits = 0;
	if (*str == '.') {
		str++;
		while (*str >= '0' && *str <= '9') {
			str++;
			digits++;
		}
	}

	return digits;
}

static void handle_qm_18x(const struct sr_dev_inst *sdi, char **tokens)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	float fvalue;
	char *e, *u;
	gboolean is_oor;
	int digits;
	int exponent;
	enum sr_mq mq;
	enum sr_unit unit;
	enum sr_mqflag mqflags;

	devc = sdi->priv;

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

	if ((e = strstr(tokens[1], "Out of range"))) {
		is_oor = TRUE;
		fvalue = -1;
		digits = 0;
		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) {
			/* Happens all the time, when switching modes. */
			sr_dbg("Invalid float: '%s'", tokens[1]);
			return;
		}
		digits = count_digits(tokens[1]);
	}
	while (*e && *e == ' ')
		e++;

	if (is_oor)
		fvalue = NAN;

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

	if (mq != 0) {
		/* Got a measurement. */
		digits -= exponent;
		fvalue *= pow(10.0f, exponent);

		sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
		analog.data = &fvalue;
		analog.num_samples = 1;
		analog.meaning->unit = unit;
		analog.meaning->mq = mq;
		analog.meaning->mqflags = mqflags;
		analog.meaning->channels = sdi->channels;

		packet.type = SR_DF_ANALOG;
		packet.payload = &analog;
		sr_session_send(sdi, &packet);
		sr_sw_limits_update_samples_read(&devc->limits, 1);
	}
}

static void handle_qm_28x(const struct sr_dev_inst *sdi, char **tokens)
{
	struct dev_context *devc;
	struct sr_datafeed_packet packet;
	struct sr_datafeed_analog analog;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	float fvalue;
	int digits;
	int exponent;
	char *e;

	devc = sdi->priv;

	if (!tokens[1])
		return;

	/* Split measurement into mantissa / exponent */
	e = tokens[0];
	while (*e) {
		if (*e == 'e' || *e == 'E') {
			*e = '\0';
			e++;
			break;
		}
		e++;
	}

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

	if (sr_atoi(e, &exponent) != SR_OK) {
		sr_err("Invalid exponent '%s'.", e);
		return;
	}

	digits = count_digits(tokens[0]) - exponent;
	fvalue *= pow(10.0f, exponent);

	sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
	analog.data = &fvalue;
	analog.meaning->channels = sdi->channels;
	analog.num_samples = 1;
	analog.meaning->mq = 0;

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

	if (analog.meaning->mq != 0) {
		/* Got a measurement. */
		packet.type = SR_DF_ANALOG;
		packet.payload = &analog;
		sr_session_send(sdi, &packet);
		sr_sw_limits_update_samples_read(&devc->limits, 1);
	}
}

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 = 0;
	devc->unit = 0;
	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 | SR_MQFLAG_DC;
		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 == 0 && devc->unit == 0)
		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;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	float fvalue;
	int digits;

	digits = 2;
	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;
		}
		digits = count_digits(tokens[0]);
	}

	devc = sdi->priv;
	if (devc->mq == 0 || devc->unit == 0)
		/* 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;
	}

	sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
	analog.meaning->channels = sdi->channels;
	analog.num_samples = 1;
	analog.data = &fvalue;
	analog.meaning->mq = devc->mq;
	analog.meaning->unit = devc->unit;
	analog.meaning->mqflags = 0;
	packet.type = SR_DF_ANALOG;
	packet.payload = &analog;
	sr_session_send(sdi, &packet);

	sr_sw_limits_update_samples_read(&devc->limits, 1);
}

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

	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;
	}

	tokens = g_strsplit(devc->buf, ",", 0);
	if (tokens[0]) {
		switch (devc->profile->model) {
		case FLUKE_87:
		case FLUKE_89:
		case FLUKE_187:
		case FLUKE_189:
			devc->expect_response = FALSE;
			handle_qm_18x(sdi, tokens);
			break;
		case FLUKE_190:
			devc->expect_response = FALSE;
			num_tokens = g_strv_length(tokens);
			if (num_tokens < 7) {
				/* Response to QM <n> measurement request. */
				handle_qm_19x_data(sdi, tokens);
				break;
			}
			/*
			 * 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);
				ret = serial_write_blocking(serial,
					cmd, n, SERIAL_WRITE_TIMEOUT_MS);
				if (ret < 0)
					sr_err("Cannot send QM (measurement).");
			}
			break;
		case FLUKE_287:
		case FLUKE_289:
			devc->expect_response = FALSE;
			handle_qm_28x(sdi, tokens);
			break;
		}
	}
	g_strfreev(tokens);
	devc->buflen = 0;
}

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 (sr_sw_limits_check(&devc->limits)) {
		sr_dev_acquisition_stop(sdi);
		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	26	#include "libsigrok-internal.h"
2cb232a9	27	#include "protocol.h"
d38d2ef0	28
d9a026ea MP	29	static int count_digits(const char *str)
d9a026ea MP	30	{
d2e3ce76 MP	31	int digits;
d2e3ce76 MP	32
d9a026ea MP	33	if (str == '-' \|\| str == '+')
	34	str++;
	35
	36	while (str >= '0' && str <= '9')
d2e3ce76 MP	37	str++;
	38
	39	digits = 0;
	40	if (*str == '.') {
	41	str++;
d9a026ea	42	while (str >= '0' && str <= '9') {
d2e3ce76 MP	43	str++;
	44	digits++;
	45	}
	46	}
	47
	48	return digits;
	49	}
	50
19ab8e36	51	static void handle_qm_18x(const struct sr_dev_inst sdi, char *tokens)
fe31f8b9	52	{
19ab8e36 AS	53	struct dev_context *devc;
	54	struct sr_datafeed_packet packet;
	55	struct sr_datafeed_analog analog;
3f5cf2a0 UH	56	struct sr_analog_encoding encoding;
	57	struct sr_analog_meaning meaning;
	58	struct sr_analog_spec spec;
fe31f8b9 BV	59	float fvalue;
	60	char e, u;
	61	gboolean is_oor;
d2e3ce76	62	int digits;
104c7d56 MP	63	int exponent;
	64	enum sr_mq mq;
	65	enum sr_unit unit;
	66	enum sr_mqflag mqflags;
fe31f8b9	67
19ab8e36 AS	68	devc = sdi->priv;
19ab8e36 AS	69
4cea0ff7	70	if (strcmp(tokens[0], "QM") \|\| !tokens[1])
19ab8e36	71	return;
fe31f8b9 BV	72
	73	if ((e = strstr(tokens[1], "Out of range"))) {
	74	is_oor = TRUE;
	75	fvalue = -1;
d2e3ce76	76	digits = 0;
0c5f2abc	77	while (e && e != '.')
357e341d	78	e++;
fe31f8b9 BV	79	} else {
fe31f8b9 BV	80	is_oor = FALSE;
357e341d BV	81	/* Delimit the float, since sr_atof_ascii() wants only
	82	* a valid float here. */
	83	e = tokens[1];
0c5f2abc	84	while (e && e != ' ')
357e341d BV	85	e++;
357e341d BV	86	*e++ = '\0';
ad42cfeb	87	if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK) {
fe31f8b9	88	/* Happens all the time, when switching modes. */
e7f803f3	89	sr_dbg("Invalid float: '%s'", tokens[1]);
19ab8e36	90	return;
fe31f8b9	91	}
d2e3ce76	92	digits = count_digits(tokens[1]);
fe31f8b9	93	}
0c5f2abc	94	while (e && e == ' ')
fe31f8b9 BV	95	e++;
fe31f8b9 BV	96
fe31f8b9	97	if (is_oor)
19ab8e36	98	fvalue = NAN;
fe31f8b9	99
104c7d56 MP	100	mq = 0;
	101	unit = 0;
	102	exponent = 0;
	103	mqflags = 0;
fe31f8b9	104	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
104c7d56 MP	105	mq = SR_MQ_VOLTAGE;
104c7d56 MP	106	unit = SR_UNIT_VOLT;
fe31f8b9	107	if (!is_oor && e[0] == 'm')
104c7d56	108	exponent = -3;
fe31f8b9 BV	109	/* This catches "V AC", "V DC" and "V AC+DC". */
fe31f8b9 BV	110	if (strstr(u, "AC"))
104c7d56	111	mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	112	if (strstr(u, "DC"))
104c7d56	113	mqflags \|= SR_MQFLAG_DC;
fe31f8b9	114	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
104c7d56	115	mq = SR_MQ_VOLTAGE;
fe31f8b9	116	if (u[2] == 'm')
104c7d56	117	unit = SR_UNIT_DECIBEL_MW;
fe31f8b9	118	else
104c7d56 MP	119	unit = SR_UNIT_DECIBEL_VOLT;
104c7d56 MP	120	mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	121	} else if ((u = strstr(e, "Ohms"))) {
104c7d56 MP	122	mq = SR_MQ_RESISTANCE;
104c7d56 MP	123	unit = SR_UNIT_OHM;
fe31f8b9	124	if (is_oor)
19ab8e36	125	fvalue = INFINITY;
fe31f8b9	126	else if (e[0] == 'k')
104c7d56	127	exponent = 3;
fe31f8b9	128	else if (e[0] == 'M')
104c7d56	129	exponent = 6;
fe31f8b9	130	} else if (!strcmp(e, "nS")) {
104c7d56 MP	131	mq = SR_MQ_CONDUCTANCE;
	132	unit = SR_UNIT_SIEMENS;
	133	exponent = -9;
fe31f8b9	134	} else if ((u = strstr(e, "Farads"))) {
104c7d56 MP	135	mq = SR_MQ_CAPACITANCE;
104c7d56 MP	136	unit = SR_UNIT_FARAD;
fe31f8b9 BV	137	if (!is_oor) {
fe31f8b9 BV	138	if (e[0] == 'm')
104c7d56	139	exponent = -3;
fe31f8b9	140	else if (e[0] == 'u')
104c7d56	141	exponent = -6;
fe31f8b9	142	else if (e[0] == 'n')
104c7d56	143	exponent = -9;
fe31f8b9 BV	144	}
fe31f8b9 BV	145	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
104c7d56	146	mq = SR_MQ_TEMPERATURE;
fe31f8b9	147	if (u[4] == 'C')
104c7d56	148	unit = SR_UNIT_CELSIUS;
fe31f8b9	149	else
104c7d56	150	unit = SR_UNIT_FAHRENHEIT;
fe31f8b9	151	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
104c7d56 MP	152	mq = SR_MQ_CURRENT;
104c7d56 MP	153	unit = SR_UNIT_AMPERE;
fe31f8b9 BV	154	/* This catches "A AC", "A DC" and "A AC+DC". */
fe31f8b9 BV	155	if (strstr(u, "AC"))
104c7d56	156	mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	157	if (strstr(u, "DC"))
104c7d56	158	mqflags \|= SR_MQFLAG_DC;
fe31f8b9 BV	159	if (!is_oor) {
fe31f8b9 BV	160	if (e[0] == 'm')
104c7d56	161	exponent = -3;
fe31f8b9	162	else if (e[0] == 'u')
104c7d56	163	exponent = -6;
fe31f8b9 BV	164	}
fe31f8b9 BV	165	} else if ((u = strstr(e, "Hz"))) {
104c7d56 MP	166	mq = SR_MQ_FREQUENCY;
104c7d56 MP	167	unit = SR_UNIT_HERTZ;
fe31f8b9	168	if (e[0] == 'k')
104c7d56	169	exponent = 3;
fe31f8b9	170	} else if (!strcmp(e, "%")) {
104c7d56 MP	171	mq = SR_MQ_DUTY_CYCLE;
104c7d56 MP	172	unit = SR_UNIT_PERCENTAGE;
fe31f8b9	173	} else if ((u = strstr(e, "ms"))) {
104c7d56 MP	174	mq = SR_MQ_PULSE_WIDTH;
	175	unit = SR_UNIT_SECOND;
	176	exponent = -3;
fe31f8b9 BV	177	}
fe31f8b9 BV	178
104c7d56	179	if (mq != 0) {
19ab8e36	180	/* Got a measurement. */
104c7d56 MP	181	digits -= exponent;
	182	fvalue *= pow(10.0f, exponent);
	183
	184	sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
	185	analog.data = &fvalue;
	186	analog.num_samples = 1;
	187	analog.meaning->unit = unit;
	188	analog.meaning->mq = mq;
	189	analog.meaning->mqflags = mqflags;
	190	analog.meaning->channels = sdi->channels;
	191
19ab8e36 AS	192	packet.type = SR_DF_ANALOG;
	193	packet.payload = &analog;
	194	sr_session_send(sdi, &packet);
	195	sr_sw_limits_update_samples_read(&devc->limits, 1);
fe31f8b9	196	}
fe31f8b9 BV	197	}
fe31f8b9 BV	198
19ab8e36	199	static void handle_qm_28x(const struct sr_dev_inst sdi, char *tokens)
d38d2ef0	200	{
19ab8e36 AS	201	struct dev_context *devc;
	202	struct sr_datafeed_packet packet;
	203	struct sr_datafeed_analog analog;
3f5cf2a0 UH	204	struct sr_analog_encoding encoding;
	205	struct sr_analog_meaning meaning;
	206	struct sr_analog_spec spec;
d38d2ef0	207	float fvalue;
d2e3ce76	208	int digits;
078ad492 MP	209	int exponent;
078ad492 MP	210	char *e;
d38d2ef0	211
19ab8e36 AS	212	devc = sdi->priv;
19ab8e36 AS	213
4cea0ff7	214	if (!tokens[1])
19ab8e36	215	return;
4cea0ff7	216
078ad492 MP	217	/* Split measurement into mantissa / exponent */
	218	e = tokens[0];
	219	while (*e) {
	220	if (e == 'e' \|\| e == 'E') {
	221	*e = '\0';
	222	e++;
	223	break;
	224	}
	225	e++;
	226	}
	227
ad42cfeb	228	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK) {
078ad492	229	sr_err("Invalid mantissa '%s'.", tokens[0]);
19ab8e36	230	return;
d38d2ef0	231	}
078ad492 MP	232
	233	if (sr_atoi(e, &exponent) != SR_OK) {
	234	sr_err("Invalid exponent '%s'.", e);
	235	return;
	236	}
	237
	238	digits = count_digits(tokens[0]) - exponent;
	239	fvalue *= pow(10.0f, exponent);
d38d2ef0	240
d2e3ce76	241	sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
19ab8e36 AS	242	analog.data = &fvalue;
	243	analog.meaning->channels = sdi->channels;
	244	analog.num_samples = 1;
	245	analog.meaning->mq = 0;
d38d2ef0 BV	246
d38d2ef0 BV	247	if (!strcmp(tokens[1], "VAC") \|\| !strcmp(tokens[1], "VDC")) {
19ab8e36 AS	248	analog.meaning->mq = SR_MQ_VOLTAGE;
19ab8e36 AS	249	analog.meaning->unit = SR_UNIT_VOLT;
d38d2ef0 BV	250	if (!strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	251	if (tokens[1][1] == 'A') {
19ab8e36 AS	252	analog.meaning->mqflags \|= SR_MQFLAG_AC;
19ab8e36 AS	253	analog.meaning->mqflags \|= SR_MQFLAG_RMS;
d38d2ef0	254	} else
19ab8e36	255	analog.meaning->mqflags \|= SR_MQFLAG_DC;
d38d2ef0	256	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
19ab8e36	257	fvalue = NAN;
d38d2ef0	258	} else
19ab8e36	259	analog.meaning->mq = 0;
a28dac0a	260	} else if (!strcmp(tokens[1], "dBV") \|\| !strcmp(tokens[1], "dBm")) {
19ab8e36	261	analog.meaning->mq = SR_MQ_VOLTAGE;
2c04dede	262	if (tokens[1][2] == 'm')
19ab8e36	263	analog.meaning->unit = SR_UNIT_DECIBEL_MW;
2c04dede	264	else
19ab8e36 AS	265	analog.meaning->unit = SR_UNIT_DECIBEL_VOLT;
19ab8e36 AS	266	analog.meaning->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
a28dac0a	267	} else if (!strcmp(tokens[1], "CEL") \|\| !strcmp(tokens[1], "FAR")) {
d38d2ef0	268	if (!strcmp(tokens[2], "NORMAL")) {
19ab8e36	269	analog.meaning->mq = SR_MQ_TEMPERATURE;
d38d2ef0	270	if (tokens[1][0] == 'C')
19ab8e36	271	analog.meaning->unit = SR_UNIT_CELSIUS;
d38d2ef0	272	else
19ab8e36	273	analog.meaning->unit = SR_UNIT_FAHRENHEIT;
d38d2ef0	274	}
a28dac0a	275	} else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0	276	if (!strcmp(tokens[3], "NONE")) {
19ab8e36 AS	277	analog.meaning->mq = SR_MQ_RESISTANCE;
19ab8e36 AS	278	analog.meaning->unit = SR_UNIT_OHM;
d38d2ef0	279	if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
19ab8e36	280	fvalue = INFINITY;
d38d2ef0	281	} else if (strcmp(tokens[2], "NORMAL"))
19ab8e36	282	analog.meaning->mq = 0;
d38d2ef0	283	} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
19ab8e36 AS	284	analog.meaning->mq = SR_MQ_CONTINUITY;
	285	analog.meaning->unit = SR_UNIT_BOOLEAN;
	286	fvalue = 0.0;
d38d2ef0	287	} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
19ab8e36 AS	288	analog.meaning->mq = SR_MQ_CONTINUITY;
	289	analog.meaning->unit = SR_UNIT_BOOLEAN;
	290	fvalue = 1.0;
d38d2ef0	291	}
a28dac0a	292	} else if (!strcmp(tokens[1], "F")
d38d2ef0 BV	293	&& !strcmp(tokens[2], "NORMAL")
d38d2ef0 BV	294	&& !strcmp(tokens[3], "NONE")) {
19ab8e36 AS	295	analog.meaning->mq = SR_MQ_CAPACITANCE;
19ab8e36 AS	296	analog.meaning->unit = SR_UNIT_FARAD;
d38d2ef0	297	} else if (!strcmp(tokens[1], "AAC") \|\| !strcmp(tokens[1], "ADC")) {
19ab8e36 AS	298	analog.meaning->mq = SR_MQ_CURRENT;
19ab8e36 AS	299	analog.meaning->unit = SR_UNIT_AMPERE;
d38d2ef0 BV	300	if (!strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	301	if (tokens[1][1] == 'A') {
19ab8e36 AS	302	analog.meaning->mqflags \|= SR_MQFLAG_AC;
19ab8e36 AS	303	analog.meaning->mqflags \|= SR_MQFLAG_RMS;
d38d2ef0	304	} else
19ab8e36	305	analog.meaning->mqflags \|= SR_MQFLAG_DC;
d38d2ef0	306	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
19ab8e36	307	fvalue = NAN;
d38d2ef0	308	} else
19ab8e36 AS	309	analog.meaning->mq = 0;
	310	} else if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
	311	analog.meaning->mq = SR_MQ_FREQUENCY;
	312	analog.meaning->unit = SR_UNIT_HERTZ;
a28dac0a	313	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
19ab8e36 AS	314	analog.meaning->mq = SR_MQ_DUTY_CYCLE;
19ab8e36 AS	315	analog.meaning->unit = SR_UNIT_PERCENTAGE;
a28dac0a	316	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
19ab8e36 AS	317	analog.meaning->mq = SR_MQ_PULSE_WIDTH;
19ab8e36 AS	318	analog.meaning->unit = SR_UNIT_SECOND;
a28dac0a	319	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
19ab8e36 AS	320	analog.meaning->mq = SR_MQ_CONDUCTANCE;
19ab8e36 AS	321	analog.meaning->unit = SR_UNIT_SIEMENS;
d38d2ef0 BV	322	}
d38d2ef0 BV	323
19ab8e36 AS	324	if (analog.meaning->mq != 0) {
	325	/* Got a measurement. */
	326	packet.type = SR_DF_ANALOG;
	327	packet.payload = &analog;
	328	sr_session_send(sdi, &packet);
	329	sr_sw_limits_update_samples_read(&devc->limits, 1);
d38d2ef0	330	}
d38d2ef0 BV	331	}
d38d2ef0 BV	332
11fb7110 BV	333	static void handle_qm_19x_meta(const struct sr_dev_inst sdi, char *tokens)
	334	{
	335	struct dev_context *devc;
	336	int meas_type, meas_unit, meas_char, i;
	337
	338	/* Make sure we have 7 valid tokens. */
	339	for (i = 0; tokens[i] && i < 7; i++);
	340	if (i != 7)
	341	return;
	342
	343	if (strcmp(tokens[1], "1"))
	344	/* Invalid measurement. */
	345	return;
	346
	347	if (strcmp(tokens[2], "3"))
	348	/* Only interested in input from the meter mode source. */
	349	return;
	350
	351	devc = sdi->priv;
	352
	353	/* Measurement type 11 == absolute, 19 = relative */
	354	meas_type = strtol(tokens[0], NULL, 10);
	355	if (meas_type != 11 && meas_type != 19)
	356	/* Device is in some mode we don't support. */
	357	return;
	358
	359	/* We might get metadata for absolute and relative mode (if the device
	360	* is in relative mode). In that case, relative takes precedence. */
	361	if (meas_type == 11 && devc->meas_type == 19)
	362	return;
	363
	364	meas_unit = strtol(tokens[3], NULL, 10);
	365	if (meas_unit == 0)
	366	/* Device is turned off. Really. */
	367	return;
	368	meas_char = strtol(tokens[4], NULL, 10);
	369
55ec0b67 UH	370	devc->mq = 0;
	371	devc->unit = 0;
	372	devc->mqflags = 0;
	373
11fb7110 BV	374	switch (meas_unit) {
	375	case 1:
	376	devc->mq = SR_MQ_VOLTAGE;
	377	devc->unit = SR_UNIT_VOLT;
	378	if (meas_char == 1)
	379	devc->mqflags \|= SR_MQFLAG_DC;
	380	else if (meas_char == 2)
	381	devc->mqflags \|= SR_MQFLAG_AC;
	382	else if (meas_char == 3)
	383	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	384	else if (meas_char == 15)
64aa214a	385	devc->mqflags \|= SR_MQFLAG_DIODE \| SR_MQFLAG_DC;
11fb7110 BV	386	break;
	387	case 2:
	388	devc->mq = SR_MQ_CURRENT;
	389	devc->unit = SR_UNIT_AMPERE;
	390	if (meas_char == 1)
	391	devc->mqflags \|= SR_MQFLAG_DC;
	392	else if (meas_char == 2)
	393	devc->mqflags \|= SR_MQFLAG_AC;
	394	else if (meas_char == 3)
	395	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	396	break;
	397	case 3:
	398	if (meas_char == 1) {
	399	devc->mq = SR_MQ_RESISTANCE;
	400	devc->unit = SR_UNIT_OHM;
	401	} else if (meas_char == 16) {
	402	devc->mq = SR_MQ_CONTINUITY;
	403	devc->unit = SR_UNIT_BOOLEAN;
	404	}
	405	break;
	406	case 12:
	407	devc->mq = SR_MQ_TEMPERATURE;
	408	devc->unit = SR_UNIT_CELSIUS;
	409	break;
	410	case 13:
	411	devc->mq = SR_MQ_TEMPERATURE;
	412	devc->unit = SR_UNIT_FAHRENHEIT;
	413	break;
	414	default:
	415	sr_dbg("unknown unit: %d", meas_unit);
	416	}
3f5cf2a0	417	if (devc->mq == 0 && devc->unit == 0)
11fb7110 BV	418	return;
	419
	420	/* If we got here, we know how to interpret the measurement. */
	421	devc->meas_type = meas_type;
	422	if (meas_type == 11)
	423	/* Absolute meter reading. */
	424	devc->is_relative = FALSE;
	425	else if (!strcmp(tokens[0], "19"))
	426	/* Relative meter reading. */
	427	devc->is_relative = TRUE;
	428
	429	}
	430
	431	static void handle_qm_19x_data(const struct sr_dev_inst sdi, char *tokens)
	432	{
	433	struct dev_context *devc;
	434	struct sr_datafeed_packet packet;
3f5cf2a0 UH	435	struct sr_datafeed_analog analog;
	436	struct sr_analog_encoding encoding;
	437	struct sr_analog_meaning meaning;
	438	struct sr_analog_spec spec;
11fb7110	439	float fvalue;
d2e3ce76	440	int digits;
11fb7110	441
d2e3ce76	442	digits = 2;
11fb7110 BV	443	if (!strcmp(tokens[0], "9.9E+37")) {
	444	/* An invalid measurement shows up on the display as "OL", but
	445	* comes through like this. Since comparing 38-digit floats
	446	* is rather problematic, we'll cut through this here. */
	447	fvalue = NAN;
	448	} else {
357e341d	449	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
11fb7110 BV	450	sr_err("Invalid float '%s'.", tokens[0]);
	451	return;
	452	}
d2e3ce76	453	digits = count_digits(tokens[0]);
11fb7110 BV	454	}
	455
	456	devc = sdi->priv;
3f5cf2a0	457	if (devc->mq == 0 \|\| devc->unit == 0)
11fb7110 BV	458	/* Don't have valid metadata yet. */
	459	return;
	460
11fb7110 BV	461	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
	462	fvalue = INFINITY;
	463	else if (devc->mq == SR_MQ_CONTINUITY) {
	464	if (isnan(fvalue))
	465	fvalue = 0.0;
	466	else
	467	fvalue = 1.0;
	468	}
	469
d2e3ce76	470	sr_analog_init(&analog, &encoding, &meaning, &spec, digits);
3f5cf2a0	471	analog.meaning->channels = sdi->channels;
11fb7110 BV	472	analog.num_samples = 1;
11fb7110 BV	473	analog.data = &fvalue;
3f5cf2a0 UH	474	analog.meaning->mq = devc->mq;
	475	analog.meaning->unit = devc->unit;
	476	analog.meaning->mqflags = 0;
	477	packet.type = SR_DF_ANALOG;
11fb7110	478	packet.payload = &analog;
695dc859	479	sr_session_send(sdi, &packet);
11fb7110	480
6aacf011	481	sr_sw_limits_update_samples_read(&devc->limits, 1);
11fb7110 BV	482	}
11fb7110 BV	483
d38d2ef0 BV	484	static void handle_line(const struct sr_dev_inst *sdi)
	485	{
	486	struct dev_context *devc;
919681f0	487	struct sr_serial_dev_inst *serial;
11fb7110 BV	488	int num_tokens, n, i;
11fb7110 BV	489	char cmd[16], **tokens;
ebf6aa30	490	int ret;
d38d2ef0 BV	491
d38d2ef0 BV	492	devc = sdi->priv;
919681f0	493	serial = sdi->conn;
31d84da3	494	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	495
	496	if (devc->buflen == 1) {
	497	if (devc->buf[0] != '0') {
	498	/* Not just a CMD_ACK from the query command. */
31d84da3	499	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	500	devc->expect_response = FALSE;
	501	}
	502	devc->buflen = 0;
	503	return;
	504	}
	505
d38d2ef0	506	tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7	507	if (tokens[0]) {
ebf6aa30 GS	508	switch (devc->profile->model) {
	509	case FLUKE_87:
	510	case FLUKE_89:
	511	case FLUKE_187:
	512	case FLUKE_189:
fe31f8b9	513	devc->expect_response = FALSE;
19ab8e36	514	handle_qm_18x(sdi, tokens);
ebf6aa30	515	break;
ebf6aa30	516	case FLUKE_190:
11fb7110	517	devc->expect_response = FALSE;
ebf6aa30 GS	518	num_tokens = g_strv_length(tokens);
ebf6aa30 GS	519	if (num_tokens < 7) {
11fb7110 BV	520	/* Response to QM <n> measurement request. */
11fb7110 BV	521	handle_qm_19x_data(sdi, tokens);
ebf6aa30	522	break;
11fb7110	523	}
ebf6aa30 GS	524	/*
	525	* Response to QM: This is a comma-separated list of
	526	* fields with metadata about the measurement. This
	527	* format can return multiple sets of metadata,
	528	* split into sets of 7 tokens each.
	529	*/
	530	devc->meas_type = 0;
	531	for (i = 0; i < num_tokens; i += 7)
	532	handle_qm_19x_meta(sdi, tokens + i);
	533	if (devc->meas_type) {
	534	/*
	535	* Slip the request in now, before the main
	536	* timer loop asks for metadata again.
	537	*/
	538	n = sprintf(cmd, "QM %d\r", devc->meas_type);
	539	ret = serial_write_blocking(serial,
	540	cmd, n, SERIAL_WRITE_TIMEOUT_MS);
	541	if (ret < 0)
	542	sr_err("Cannot send QM (measurement).");
	543	}
	544	break;
0d68d6ba GS	545	case FLUKE_287:
	546	case FLUKE_289:
	547	devc->expect_response = FALSE;
	548	handle_qm_28x(sdi, tokens);
	549	break;
d38d2ef0	550	}
d38d2ef0 BV	551	}
	552	g_strfreev(tokens);
	553	devc->buflen = 0;
d38d2ef0 BV	554	}
	555
	556	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	557	{
642e9d62	558	struct sr_dev_inst *sdi;
d38d2ef0	559	struct dev_context *devc;
919681f0	560	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	561	int len;
	562	int64_t now, elapsed;
	563
58d03f03 BV	564	(void)fd;
58d03f03 BV	565
d38d2ef0 BV	566	if (!(sdi = cb_data))
	567	return TRUE;
	568
	569	if (!(devc = sdi->priv))
	570	return TRUE;
	571
919681f0	572	serial = sdi->conn;
d38d2ef0 BV	573	if (revents == G_IO_IN) {
d38d2ef0 BV	574	/* Serial data arrived. */
0c5f2abc	575	while (FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
707fa85a	576	len = serial_read_nonblocking(serial, devc->buf + devc->buflen, 1);
d38d2ef0 BV	577	if (len < 1)
	578	break;
	579	devc->buflen++;
	580	*(devc->buf + devc->buflen) = '\0';
	581	if (*(devc->buf + devc->buflen - 1) == '\r') {
	582	*(devc->buf + --devc->buflen) = '\0';
	583	handle_line(sdi);
	584	break;
	585	}
	586	}
	587	}
	588
6aacf011	589	if (sr_sw_limits_check(&devc->limits)) {
d2f7c417	590	sr_dev_acquisition_stop(sdi);
d38d2ef0 BV	591	return TRUE;
	592	}
	593
	594	now = g_get_monotonic_time() / 1000;
	595	elapsed = now - devc->cmd_sent_at;
	596	/* Send query command at poll_period interval, or after 1 second
d4b11de0 BV	597	* has elapsed. This will make it easier to recover from any
d4b11de0 BV	598	* out-of-sync or temporary disconnect issues. */
d38d2ef0	599	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0	600	\|\| elapsed > devc->profile->timeout) {
20401400	601	if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	602	sr_err("Unable to send QM.");
d38d2ef0 BV	603	devc->cmd_sent_at = now;
	604	devc->expect_response = TRUE;
	605	}
	606
	607	return TRUE;
	608	}