[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 struct sr_datafeed_analog *handle_qm_18x(const struct sr_dev_inst *sdi,
		char **tokens)
{
	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;

	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));
	/* TODO: Use proper 'digits' value for this device (and its modes). */
	sr_analog_init(analog, &encoding, &meaning, &spec, 2);
	analog->data = g_malloc(sizeof(float));
	analog->meaning->channels = sdi->channels;
	analog->num_samples = 1;
	if (is_oor)
		*((float *)analog->data) = NAN;
	else
		*((float *)analog->data) = fvalue;
	analog->meaning->mq = 0;

	if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
		analog->meaning->mq = SR_MQ_VOLTAGE;
		analog->meaning->unit = SR_UNIT_VOLT;
		if (!is_oor && e[0] == 'm')
			*((float *)analog->data) /= 1000;
		/* This catches "V AC", "V DC" and "V AC+DC". */
		if (strstr(u, "AC"))
			analog->meaning->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
		if (strstr(u, "DC"))
			analog->meaning->mqflags |= SR_MQFLAG_DC;
	} else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
		analog->meaning->mq = SR_MQ_VOLTAGE;
		if (u[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 ((u = strstr(e, "Ohms"))) {
		analog->meaning->mq = SR_MQ_RESISTANCE;
		analog->meaning->unit = SR_UNIT_OHM;
		if (is_oor)
			*((float *)analog->data) = INFINITY;
		else if (e[0] == 'k')
			*((float *)analog->data) *= 1000;
		else if (e[0] == 'M')
			*((float *)analog->data) *= 1000000;
	} else if (!strcmp(e, "nS")) {
		analog->meaning->mq = SR_MQ_CONDUCTANCE;
		analog->meaning->unit = SR_UNIT_SIEMENS;
		*((float *)analog->data) /= 1e+9;
	} else if ((u = strstr(e, "Farads"))) {
		analog->meaning->mq = SR_MQ_CAPACITANCE;
		analog->meaning->unit = SR_UNIT_FARAD;
		if (!is_oor) {
			if (e[0] == 'm')
				*((float *)analog->data) /= 1e+3;
			else if (e[0] == 'u')
				*((float *)analog->data) /= 1e+6;
			else if (e[0] == 'n')
				*((float *)analog->data) /= 1e+9;
		}
	} else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
		analog->meaning->mq = SR_MQ_TEMPERATURE;
		if (u[4] == 'C')
			analog->meaning->unit = SR_UNIT_CELSIUS;
		else
			analog->meaning->unit = SR_UNIT_FAHRENHEIT;
	} else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
		analog->meaning->mq = SR_MQ_CURRENT;
		analog->meaning->unit = SR_UNIT_AMPERE;
		/* This catches "A AC", "A DC" and "A AC+DC". */
		if (strstr(u, "AC"))
			analog->meaning->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
		if (strstr(u, "DC"))
			analog->meaning->mqflags |= SR_MQFLAG_DC;
		if (!is_oor) {
			if (e[0] == 'm')
				*((float *)analog->data) /= 1e+3;
			else if (e[0] == 'u')
				*((float *)analog->data) /= 1e+6;
		}
	} else if ((u = strstr(e, "Hz"))) {
		analog->meaning->mq = SR_MQ_FREQUENCY;
		analog->meaning->unit = SR_UNIT_HERTZ;
		if (e[0] == 'k')
			*((float *)analog->data) *= 1e+3;
	} else if (!strcmp(e, "%")) {
		analog->meaning->mq = SR_MQ_DUTY_CYCLE;
		analog->meaning->unit = SR_UNIT_PERCENTAGE;
	} else if ((u = strstr(e, "ms"))) {
		analog->meaning->mq = SR_MQ_PULSE_WIDTH;
		analog->meaning->unit = SR_UNIT_SECOND;
		*((float *)analog->data) /= 1e+3;
	}

	if (analog->meaning->mq == 0) {
		/* 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;
	struct sr_analog_encoding encoding;
	struct sr_analog_meaning meaning;
	struct sr_analog_spec spec;
	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));
	/* TODO: Use proper 'digits' value for this device (and its modes). */
	sr_analog_init(analog, &encoding, &meaning, &spec, 2);
	analog->data = g_malloc(sizeof(float));
	analog->meaning->channels = sdi->channels;
	analog->num_samples = 1;
	*((float *)analog->data) = fvalue;
	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")) {
			*((float *)analog->data) = 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")) {
				*((float *)analog->data) = 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;
			*((float *)analog->data) = 0.0;
		} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
			analog->meaning->mq = SR_MQ_CONTINUITY;
			analog->meaning->unit = SR_UNIT_BOOLEAN;
			*((float *)analog->data) = 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")) {
			*((float *)analog->data) = NAN;
		} else
			analog->meaning->mq = 0;
	} 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) {
		/* 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 = 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;
		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;

	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 == 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;
	}

	/* TODO: Use proper 'digits' value for this device (and its modes). */
	sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
	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;
	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->profile->model == FLUKE_289) {
			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(sdi, &packet);
		sr_sw_limits_update_samples_read(&devc->limits, 1);
		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 (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
3f5cf2a0	29	static struct sr_datafeed_analog handle_qm_18x(const struct sr_dev_inst sdi,
fe31f8b9 BV	30	char **tokens)
fe31f8b9 BV	31	{
3f5cf2a0 UH	32	struct sr_datafeed_analog *analog;
	33	struct sr_analog_encoding encoding;
	34	struct sr_analog_meaning meaning;
	35	struct sr_analog_spec spec;
fe31f8b9 BV	36	float fvalue;
	37	char e, u;
	38	gboolean is_oor;
	39
4cea0ff7	40	if (strcmp(tokens[0], "QM") \|\| !tokens[1])
fe31f8b9 BV	41	return NULL;
	42
	43	if ((e = strstr(tokens[1], "Out of range"))) {
	44	is_oor = TRUE;
	45	fvalue = -1;
0c5f2abc	46	while (e && e != '.')
357e341d	47	e++;
fe31f8b9 BV	48	} else {
fe31f8b9 BV	49	is_oor = FALSE;
357e341d BV	50	/* Delimit the float, since sr_atof_ascii() wants only
	51	* a valid float here. */
	52	e = tokens[1];
0c5f2abc	53	while (e && e != ' ')
357e341d BV	54	e++;
	55	*e++ = '\0';
	56	if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK \|\| fvalue == 0.0) {
fe31f8b9	57	/* Happens all the time, when switching modes. */
31d84da3	58	sr_dbg("Invalid float.");
fe31f8b9 BV	59	return NULL;
	60	}
	61	}
0c5f2abc	62	while (e && e == ' ')
fe31f8b9 BV	63	e++;
fe31f8b9 BV	64
3f5cf2a0	65	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
7dcaddd3 UH	66	/* TODO: Use proper 'digits' value for this device (and its modes). */
7dcaddd3 UH	67	sr_analog_init(analog, &encoding, &meaning, &spec, 2);
a95f142e	68	analog->data = g_malloc(sizeof(float));
3f5cf2a0	69	analog->meaning->channels = sdi->channels;
fe31f8b9	70	analog->num_samples = 1;
fe31f8b9	71	if (is_oor)
3f5cf2a0	72	((float )analog->data) = NAN;
fe31f8b9	73	else
3f5cf2a0 UH	74	((float )analog->data) = fvalue;
3f5cf2a0 UH	75	analog->meaning->mq = 0;
fe31f8b9 BV	76
fe31f8b9 BV	77	if ((u = strstr(e, "V DC")) \|\| (u = strstr(e, "V AC"))) {
3f5cf2a0 UH	78	analog->meaning->mq = SR_MQ_VOLTAGE;
3f5cf2a0 UH	79	analog->meaning->unit = SR_UNIT_VOLT;
fe31f8b9	80	if (!is_oor && e[0] == 'm')
3f5cf2a0	81	((float )analog->data) /= 1000;
fe31f8b9 BV	82	/* This catches "V AC", "V DC" and "V AC+DC". */
fe31f8b9 BV	83	if (strstr(u, "AC"))
3f5cf2a0	84	analog->meaning->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	85	if (strstr(u, "DC"))
3f5cf2a0	86	analog->meaning->mqflags \|= SR_MQFLAG_DC;
fe31f8b9	87	} else if ((u = strstr(e, "dBV")) \|\| (u = strstr(e, "dBm"))) {
3f5cf2a0	88	analog->meaning->mq = SR_MQ_VOLTAGE;
fe31f8b9	89	if (u[2] == 'm')
3f5cf2a0	90	analog->meaning->unit = SR_UNIT_DECIBEL_MW;
fe31f8b9	91	else
3f5cf2a0 UH	92	analog->meaning->unit = SR_UNIT_DECIBEL_VOLT;
3f5cf2a0 UH	93	analog->meaning->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	94	} else if ((u = strstr(e, "Ohms"))) {
3f5cf2a0 UH	95	analog->meaning->mq = SR_MQ_RESISTANCE;
3f5cf2a0 UH	96	analog->meaning->unit = SR_UNIT_OHM;
fe31f8b9	97	if (is_oor)
3f5cf2a0	98	((float )analog->data) = INFINITY;
fe31f8b9	99	else if (e[0] == 'k')
3f5cf2a0	100	((float )analog->data) *= 1000;
fe31f8b9	101	else if (e[0] == 'M')
3f5cf2a0	102	((float )analog->data) *= 1000000;
fe31f8b9	103	} else if (!strcmp(e, "nS")) {
3f5cf2a0 UH	104	analog->meaning->mq = SR_MQ_CONDUCTANCE;
	105	analog->meaning->unit = SR_UNIT_SIEMENS;
	106	((float )analog->data) /= 1e+9;
fe31f8b9	107	} else if ((u = strstr(e, "Farads"))) {
3f5cf2a0 UH	108	analog->meaning->mq = SR_MQ_CAPACITANCE;
3f5cf2a0 UH	109	analog->meaning->unit = SR_UNIT_FARAD;
fe31f8b9 BV	110	if (!is_oor) {
fe31f8b9 BV	111	if (e[0] == 'm')
3f5cf2a0	112	((float )analog->data) /= 1e+3;
fe31f8b9	113	else if (e[0] == 'u')
3f5cf2a0	114	((float )analog->data) /= 1e+6;
fe31f8b9	115	else if (e[0] == 'n')
3f5cf2a0	116	((float )analog->data) /= 1e+9;
fe31f8b9 BV	117	}
fe31f8b9 BV	118	} else if ((u = strstr(e, "Deg C")) \|\| (u = strstr(e, "Deg F"))) {
3f5cf2a0	119	analog->meaning->mq = SR_MQ_TEMPERATURE;
fe31f8b9	120	if (u[4] == 'C')
3f5cf2a0	121	analog->meaning->unit = SR_UNIT_CELSIUS;
fe31f8b9	122	else
3f5cf2a0	123	analog->meaning->unit = SR_UNIT_FAHRENHEIT;
fe31f8b9	124	} else if ((u = strstr(e, "A AC")) \|\| (u = strstr(e, "A DC"))) {
3f5cf2a0 UH	125	analog->meaning->mq = SR_MQ_CURRENT;
3f5cf2a0 UH	126	analog->meaning->unit = SR_UNIT_AMPERE;
fe31f8b9 BV	127	/* This catches "A AC", "A DC" and "A AC+DC". */
fe31f8b9 BV	128	if (strstr(u, "AC"))
3f5cf2a0	129	analog->meaning->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
fe31f8b9	130	if (strstr(u, "DC"))
3f5cf2a0	131	analog->meaning->mqflags \|= SR_MQFLAG_DC;
fe31f8b9 BV	132	if (!is_oor) {
fe31f8b9 BV	133	if (e[0] == 'm')
3f5cf2a0	134	((float )analog->data) /= 1e+3;
fe31f8b9	135	else if (e[0] == 'u')
3f5cf2a0	136	((float )analog->data) /= 1e+6;
fe31f8b9 BV	137	}
fe31f8b9 BV	138	} else if ((u = strstr(e, "Hz"))) {
3f5cf2a0 UH	139	analog->meaning->mq = SR_MQ_FREQUENCY;
3f5cf2a0 UH	140	analog->meaning->unit = SR_UNIT_HERTZ;
fe31f8b9	141	if (e[0] == 'k')
3f5cf2a0	142	((float )analog->data) *= 1e+3;
fe31f8b9	143	} else if (!strcmp(e, "%")) {
3f5cf2a0 UH	144	analog->meaning->mq = SR_MQ_DUTY_CYCLE;
3f5cf2a0 UH	145	analog->meaning->unit = SR_UNIT_PERCENTAGE;
fe31f8b9	146	} else if ((u = strstr(e, "ms"))) {
3f5cf2a0 UH	147	analog->meaning->mq = SR_MQ_PULSE_WIDTH;
	148	analog->meaning->unit = SR_UNIT_SECOND;
	149	((float )analog->data) /= 1e+3;
fe31f8b9 BV	150	}
fe31f8b9 BV	151
3f5cf2a0	152	if (analog->meaning->mq == 0) {
fe31f8b9 BV	153	/* Not a valid measurement. */
	154	g_free(analog->data);
	155	g_free(analog);
	156	analog = NULL;
	157	}
	158
	159	return analog;
	160	}
	161
3f5cf2a0	162	static struct sr_datafeed_analog handle_qm_28x(const struct sr_dev_inst sdi,
d38d2ef0 BV	163	char **tokens)
d38d2ef0 BV	164	{
3f5cf2a0 UH	165	struct sr_datafeed_analog *analog;
	166	struct sr_analog_encoding encoding;
	167	struct sr_analog_meaning meaning;
	168	struct sr_analog_spec spec;
d38d2ef0	169	float fvalue;
d38d2ef0	170
4cea0ff7 BV	171	if (!tokens[1])
	172	return NULL;
	173
357e341d BV	174	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
357e341d BV	175	sr_err("Invalid float '%s'.", tokens[0]);
d38d2ef0 BV	176	return NULL;
	177	}
	178
3f5cf2a0	179	analog = g_malloc0(sizeof(struct sr_datafeed_analog));
7dcaddd3 UH	180	/* TODO: Use proper 'digits' value for this device (and its modes). */
7dcaddd3 UH	181	sr_analog_init(analog, &encoding, &meaning, &spec, 2);
a95f142e	182	analog->data = g_malloc(sizeof(float));
3f5cf2a0	183	analog->meaning->channels = sdi->channels;
d38d2ef0	184	analog->num_samples = 1;
3f5cf2a0 UH	185	((float )analog->data) = fvalue;
3f5cf2a0 UH	186	analog->meaning->mq = 0;
d38d2ef0 BV	187
d38d2ef0 BV	188	if (!strcmp(tokens[1], "VAC") \|\| !strcmp(tokens[1], "VDC")) {
3f5cf2a0 UH	189	analog->meaning->mq = SR_MQ_VOLTAGE;
3f5cf2a0 UH	190	analog->meaning->unit = SR_UNIT_VOLT;
d38d2ef0 BV	191	if (!strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	192	if (tokens[1][1] == 'A') {
3f5cf2a0 UH	193	analog->meaning->mqflags \|= SR_MQFLAG_AC;
3f5cf2a0 UH	194	analog->meaning->mqflags \|= SR_MQFLAG_RMS;
d38d2ef0	195	} else
3f5cf2a0	196	analog->meaning->mqflags \|= SR_MQFLAG_DC;
d38d2ef0	197	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
3f5cf2a0	198	((float )analog->data) = NAN;
d38d2ef0	199	} else
3f5cf2a0	200	analog->meaning->mq = 0;
a28dac0a	201	} else if (!strcmp(tokens[1], "dBV") \|\| !strcmp(tokens[1], "dBm")) {
3f5cf2a0	202	analog->meaning->mq = SR_MQ_VOLTAGE;
2c04dede	203	if (tokens[1][2] == 'm')
3f5cf2a0	204	analog->meaning->unit = SR_UNIT_DECIBEL_MW;
2c04dede	205	else
3f5cf2a0 UH	206	analog->meaning->unit = SR_UNIT_DECIBEL_VOLT;
3f5cf2a0 UH	207	analog->meaning->mqflags \|= SR_MQFLAG_AC \| SR_MQFLAG_RMS;
a28dac0a	208	} else if (!strcmp(tokens[1], "CEL") \|\| !strcmp(tokens[1], "FAR")) {
d38d2ef0	209	if (!strcmp(tokens[2], "NORMAL")) {
3f5cf2a0	210	analog->meaning->mq = SR_MQ_TEMPERATURE;
d38d2ef0	211	if (tokens[1][0] == 'C')
3f5cf2a0	212	analog->meaning->unit = SR_UNIT_CELSIUS;
d38d2ef0	213	else
3f5cf2a0	214	analog->meaning->unit = SR_UNIT_FAHRENHEIT;
d38d2ef0	215	}
a28dac0a	216	} else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0	217	if (!strcmp(tokens[3], "NONE")) {
3f5cf2a0 UH	218	analog->meaning->mq = SR_MQ_RESISTANCE;
3f5cf2a0 UH	219	analog->meaning->unit = SR_UNIT_OHM;
d38d2ef0	220	if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
3f5cf2a0	221	((float )analog->data) = INFINITY;
d38d2ef0	222	} else if (strcmp(tokens[2], "NORMAL"))
3f5cf2a0	223	analog->meaning->mq = 0;
d38d2ef0	224	} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
3f5cf2a0 UH	225	analog->meaning->mq = SR_MQ_CONTINUITY;
	226	analog->meaning->unit = SR_UNIT_BOOLEAN;
	227	((float )analog->data) = 0.0;
d38d2ef0	228	} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
3f5cf2a0 UH	229	analog->meaning->mq = SR_MQ_CONTINUITY;
	230	analog->meaning->unit = SR_UNIT_BOOLEAN;
	231	((float )analog->data) = 1.0;
d38d2ef0	232	}
a28dac0a	233	} else if (!strcmp(tokens[1], "F")
d38d2ef0 BV	234	&& !strcmp(tokens[2], "NORMAL")
d38d2ef0 BV	235	&& !strcmp(tokens[3], "NONE")) {
3f5cf2a0 UH	236	analog->meaning->mq = SR_MQ_CAPACITANCE;
3f5cf2a0 UH	237	analog->meaning->unit = SR_UNIT_FARAD;
d38d2ef0	238	} else if (!strcmp(tokens[1], "AAC") \|\| !strcmp(tokens[1], "ADC")) {
3f5cf2a0 UH	239	analog->meaning->mq = SR_MQ_CURRENT;
3f5cf2a0 UH	240	analog->meaning->unit = SR_UNIT_AMPERE;
d38d2ef0 BV	241	if (!strcmp(tokens[2], "NORMAL")) {
d38d2ef0 BV	242	if (tokens[1][1] == 'A') {
3f5cf2a0 UH	243	analog->meaning->mqflags \|= SR_MQFLAG_AC;
3f5cf2a0 UH	244	analog->meaning->mqflags \|= SR_MQFLAG_RMS;
d38d2ef0	245	} else
3f5cf2a0	246	analog->meaning->mqflags \|= SR_MQFLAG_DC;
d38d2ef0	247	} else if (!strcmp(tokens[2], "OL") \|\| !strcmp(tokens[2], "OL_MINUS")) {
3f5cf2a0	248	((float )analog->data) = NAN;
d38d2ef0	249	} else
3f5cf2a0	250	analog->meaning->mq = 0;
d38d2ef0	251	} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
3f5cf2a0 UH	252	analog->meaning->mq = SR_MQ_FREQUENCY;
3f5cf2a0 UH	253	analog->meaning->unit = SR_UNIT_HERTZ;
a28dac0a	254	} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
3f5cf2a0 UH	255	analog->meaning->mq = SR_MQ_DUTY_CYCLE;
3f5cf2a0 UH	256	analog->meaning->unit = SR_UNIT_PERCENTAGE;
a28dac0a	257	} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
3f5cf2a0 UH	258	analog->meaning->mq = SR_MQ_PULSE_WIDTH;
3f5cf2a0 UH	259	analog->meaning->unit = SR_UNIT_SECOND;
a28dac0a	260	} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
3f5cf2a0 UH	261	analog->meaning->mq = SR_MQ_CONDUCTANCE;
3f5cf2a0 UH	262	analog->meaning->unit = SR_UNIT_SIEMENS;
d38d2ef0 BV	263	}
d38d2ef0 BV	264
3f5cf2a0	265	if (analog->meaning->mq == 0) {
d38d2ef0 BV	266	/* Not a valid measurement. */
	267	g_free(analog->data);
	268	g_free(analog);
	269	analog = NULL;
	270	}
	271
	272	return analog;
	273	}
	274
11fb7110 BV	275	static void handle_qm_19x_meta(const struct sr_dev_inst sdi, char *tokens)
	276	{
	277	struct dev_context *devc;
	278	int meas_type, meas_unit, meas_char, i;
	279
	280	/* Make sure we have 7 valid tokens. */
	281	for (i = 0; tokens[i] && i < 7; i++);
	282	if (i != 7)
	283	return;
	284
	285	if (strcmp(tokens[1], "1"))
	286	/* Invalid measurement. */
	287	return;
	288
	289	if (strcmp(tokens[2], "3"))
	290	/* Only interested in input from the meter mode source. */
	291	return;
	292
	293	devc = sdi->priv;
	294
	295	/* Measurement type 11 == absolute, 19 = relative */
	296	meas_type = strtol(tokens[0], NULL, 10);
	297	if (meas_type != 11 && meas_type != 19)
	298	/* Device is in some mode we don't support. */
	299	return;
	300
	301	/* We might get metadata for absolute and relative mode (if the device
	302	* is in relative mode). In that case, relative takes precedence. */
	303	if (meas_type == 11 && devc->meas_type == 19)
	304	return;
	305
	306	meas_unit = strtol(tokens[3], NULL, 10);
	307	if (meas_unit == 0)
	308	/* Device is turned off. Really. */
	309	return;
	310	meas_char = strtol(tokens[4], NULL, 10);
	311
55ec0b67 UH	312	devc->mq = 0;
	313	devc->unit = 0;
	314	devc->mqflags = 0;
	315
11fb7110 BV	316	switch (meas_unit) {
	317	case 1:
	318	devc->mq = SR_MQ_VOLTAGE;
	319	devc->unit = SR_UNIT_VOLT;
	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	else if (meas_char == 15)
	327	devc->mqflags \|= SR_MQFLAG_DIODE;
	328	break;
	329	case 2:
	330	devc->mq = SR_MQ_CURRENT;
	331	devc->unit = SR_UNIT_AMPERE;
	332	if (meas_char == 1)
	333	devc->mqflags \|= SR_MQFLAG_DC;
	334	else if (meas_char == 2)
	335	devc->mqflags \|= SR_MQFLAG_AC;
	336	else if (meas_char == 3)
	337	devc->mqflags \|= SR_MQFLAG_DC \| SR_MQFLAG_AC;
	338	break;
	339	case 3:
	340	if (meas_char == 1) {
	341	devc->mq = SR_MQ_RESISTANCE;
	342	devc->unit = SR_UNIT_OHM;
	343	} else if (meas_char == 16) {
	344	devc->mq = SR_MQ_CONTINUITY;
	345	devc->unit = SR_UNIT_BOOLEAN;
	346	}
	347	break;
	348	case 12:
	349	devc->mq = SR_MQ_TEMPERATURE;
	350	devc->unit = SR_UNIT_CELSIUS;
	351	break;
	352	case 13:
	353	devc->mq = SR_MQ_TEMPERATURE;
	354	devc->unit = SR_UNIT_FAHRENHEIT;
	355	break;
	356	default:
	357	sr_dbg("unknown unit: %d", meas_unit);
	358	}
3f5cf2a0	359	if (devc->mq == 0 && devc->unit == 0)
11fb7110 BV	360	return;
	361
	362	/* If we got here, we know how to interpret the measurement. */
	363	devc->meas_type = meas_type;
	364	if (meas_type == 11)
	365	/* Absolute meter reading. */
	366	devc->is_relative = FALSE;
	367	else if (!strcmp(tokens[0], "19"))
	368	/* Relative meter reading. */
	369	devc->is_relative = TRUE;
	370
	371	}
	372
	373	static void handle_qm_19x_data(const struct sr_dev_inst sdi, char *tokens)
	374	{
	375	struct dev_context *devc;
	376	struct sr_datafeed_packet packet;
3f5cf2a0 UH	377	struct sr_datafeed_analog analog;
	378	struct sr_analog_encoding encoding;
	379	struct sr_analog_meaning meaning;
	380	struct sr_analog_spec spec;
11fb7110	381	float fvalue;
11fb7110 BV	382
	383	if (!strcmp(tokens[0], "9.9E+37")) {
	384	/* An invalid measurement shows up on the display as "OL", but
	385	* comes through like this. Since comparing 38-digit floats
	386	* is rather problematic, we'll cut through this here. */
	387	fvalue = NAN;
	388	} else {
357e341d	389	if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK \|\| fvalue == 0.0) {
11fb7110 BV	390	sr_err("Invalid float '%s'.", tokens[0]);
	391	return;
	392	}
	393	}
	394
	395	devc = sdi->priv;
3f5cf2a0	396	if (devc->mq == 0 \|\| devc->unit == 0)
11fb7110 BV	397	/* Don't have valid metadata yet. */
	398	return;
	399
11fb7110 BV	400	if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
	401	fvalue = INFINITY;
	402	else if (devc->mq == SR_MQ_CONTINUITY) {
	403	if (isnan(fvalue))
	404	fvalue = 0.0;
	405	else
	406	fvalue = 1.0;
	407	}
	408
7dcaddd3 UH	409	/* TODO: Use proper 'digits' value for this device (and its modes). */
7dcaddd3 UH	410	sr_analog_init(&analog, &encoding, &meaning, &spec, 2);
3f5cf2a0	411	analog.meaning->channels = sdi->channels;
11fb7110 BV	412	analog.num_samples = 1;
11fb7110 BV	413	analog.data = &fvalue;
3f5cf2a0 UH	414	analog.meaning->mq = devc->mq;
	415	analog.meaning->unit = devc->unit;
	416	analog.meaning->mqflags = 0;
	417	packet.type = SR_DF_ANALOG;
11fb7110	418	packet.payload = &analog;
695dc859	419	sr_session_send(sdi, &packet);
11fb7110	420
6aacf011	421	sr_sw_limits_update_samples_read(&devc->limits, 1);
11fb7110 BV	422	}
11fb7110 BV	423
d38d2ef0 BV	424	static void handle_line(const struct sr_dev_inst *sdi)
	425	{
	426	struct dev_context *devc;
919681f0	427	struct sr_serial_dev_inst *serial;
d38d2ef0	428	struct sr_datafeed_packet packet;
3f5cf2a0	429	struct sr_datafeed_analog *analog;
11fb7110 BV	430	int num_tokens, n, i;
11fb7110 BV	431	char cmd[16], **tokens;
d38d2ef0 BV	432
d38d2ef0 BV	433	devc = sdi->priv;
919681f0	434	serial = sdi->conn;
31d84da3	435	sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0 BV	436
	437	if (devc->buflen == 1) {
	438	if (devc->buf[0] != '0') {
	439	/* Not just a CMD_ACK from the query command. */
31d84da3	440	sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0 BV	441	devc->expect_response = FALSE;
	442	}
	443	devc->buflen = 0;
	444	return;
	445	}
	446
	447	analog = NULL;
	448	tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7	449	if (tokens[0]) {
0bc3ab92	450	if (devc->profile->model == FLUKE_187 \|\| devc->profile->model == FLUKE_189) {
fe31f8b9	451	devc->expect_response = FALSE;
4cea0ff7	452	analog = handle_qm_18x(sdi, tokens);
ba4dfbde	453	} else if (devc->profile->model == FLUKE_287 \|\| devc->profile->model == FLUKE_289) {
d38d2ef0	454	devc->expect_response = FALSE;
4cea0ff7	455	analog = handle_qm_28x(sdi, tokens);
11fb7110 BV	456	} else if (devc->profile->model == FLUKE_190) {
	457	devc->expect_response = FALSE;
	458	for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
	459	if (num_tokens >= 7) {
	460	/* Response to QM: this is a comma-separated list of
	461	* fields with metadata about the measurement. This
	462	* format can return multiple sets of metadata,
	463	* split into sets of 7 tokens each. */
	464	devc->meas_type = 0;
	465	for (i = 0; i < num_tokens; i += 7)
	466	handle_qm_19x_meta(sdi, tokens + i);
	467	if (devc->meas_type) {
	468	/* Slip the request in now, before the main
	469	* timer loop asks for metadata again. */
	470	n = sprintf(cmd, "QM %d\r", devc->meas_type);
20401400	471	if (serial_write_blocking(serial, cmd, n, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	472	sr_err("Unable to send QM (measurement).");
11fb7110 BV	473	}
	474	} else {
	475	/* Response to QM <n> measurement request. */
	476	handle_qm_19x_data(sdi, tokens);
	477	}
d38d2ef0	478	}
d38d2ef0 BV	479	}
	480	g_strfreev(tokens);
	481	devc->buflen = 0;
	482
	483	if (analog) {
	484	/* Got a measurement. */
3f5cf2a0	485	packet.type = SR_DF_ANALOG;
d38d2ef0	486	packet.payload = analog;
695dc859	487	sr_session_send(sdi, &packet);
6aacf011	488	sr_sw_limits_update_samples_read(&devc->limits, 1);
d38d2ef0 BV	489	g_free(analog->data);
	490	g_free(analog);
	491	}
	492
	493	}
	494
	495	SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
	496	{
642e9d62	497	struct sr_dev_inst *sdi;
d38d2ef0	498	struct dev_context *devc;
919681f0	499	struct sr_serial_dev_inst *serial;
d38d2ef0 BV	500	int len;
	501	int64_t now, elapsed;
	502
58d03f03 BV	503	(void)fd;
58d03f03 BV	504
d38d2ef0 BV	505	if (!(sdi = cb_data))
	506	return TRUE;
	507
	508	if (!(devc = sdi->priv))
	509	return TRUE;
	510
919681f0	511	serial = sdi->conn;
d38d2ef0 BV	512	if (revents == G_IO_IN) {
d38d2ef0 BV	513	/* Serial data arrived. */
0c5f2abc	514	while (FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
707fa85a	515	len = serial_read_nonblocking(serial, devc->buf + devc->buflen, 1);
d38d2ef0 BV	516	if (len < 1)
	517	break;
	518	devc->buflen++;
	519	*(devc->buf + devc->buflen) = '\0';
	520	if (*(devc->buf + devc->buflen - 1) == '\r') {
	521	*(devc->buf + --devc->buflen) = '\0';
	522	handle_line(sdi);
	523	break;
	524	}
	525	}
	526	}
	527
6aacf011	528	if (sr_sw_limits_check(&devc->limits)) {
d2f7c417	529	sr_dev_acquisition_stop(sdi);
d38d2ef0 BV	530	return TRUE;
	531	}
	532
	533	now = g_get_monotonic_time() / 1000;
	534	elapsed = now - devc->cmd_sent_at;
	535	/* Send query command at poll_period interval, or after 1 second
d4b11de0 BV	536	* has elapsed. This will make it easier to recover from any
d4b11de0 BV	537	* out-of-sync or temporary disconnect issues. */
d38d2ef0	538	if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0	539	\|\| elapsed > devc->profile->timeout) {
20401400	540	if (serial_write_blocking(serial, "QM\r", 3, SERIAL_WRITE_TIMEOUT_MS) < 0)
bb27c765	541	sr_err("Unable to send QM.");
d38d2ef0 BV	542	devc->cmd_sent_at = now;
	543	devc->expect_response = TRUE;
	544	}
	545
	546	return TRUE;
	547	}