537 lines
14 KiB
C
537 lines
14 KiB
C
/*
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* This file is part of the libsigrok project.
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*
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* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include <math.h>
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#include <string.h>
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#include <errno.h>
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#include <glib.h>
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#include "libsigrok.h"
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#include "libsigrok-internal.h"
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#include "fluke-dmm.h"
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static struct sr_datafeed_analog *handle_qm_18x(const struct sr_dev_inst *sdi,
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char **tokens)
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{
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struct sr_datafeed_analog *analog;
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float fvalue;
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char *e, *u;
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gboolean is_oor;
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if (strcmp(tokens[0], "QM") || !tokens[1])
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return NULL;
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if ((e = strstr(tokens[1], "Out of range"))) {
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is_oor = TRUE;
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fvalue = -1;
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while(*e && *e != '.')
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e++;
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} else {
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is_oor = FALSE;
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/* Delimit the float, since sr_atof_ascii() wants only
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* a valid float here. */
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e = tokens[1];
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while(*e && *e != ' ')
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e++;
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*e++ = '\0';
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if (sr_atof_ascii(tokens[1], &fvalue) != SR_OK || fvalue == 0.0) {
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/* Happens all the time, when switching modes. */
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sr_dbg("Invalid float.");
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return NULL;
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}
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}
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while(*e && *e == ' ')
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e++;
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if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
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return NULL;
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if (!(analog->data = g_try_malloc(sizeof(float))))
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return NULL;
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analog->channels = sdi->channels;
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analog->num_samples = 1;
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if (is_oor)
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*analog->data = NAN;
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else
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*analog->data = fvalue;
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analog->mq = -1;
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if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
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analog->mq = SR_MQ_VOLTAGE;
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analog->unit = SR_UNIT_VOLT;
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if (!is_oor && e[0] == 'm')
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*analog->data /= 1000;
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/* This catches "V AC", "V DC" and "V AC+DC". */
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if (strstr(u, "AC"))
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analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
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if (strstr(u, "DC"))
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analog->mqflags |= SR_MQFLAG_DC;
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} else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
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analog->mq = SR_MQ_VOLTAGE;
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if (u[2] == 'm')
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analog->unit = SR_UNIT_DECIBEL_MW;
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else
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analog->unit = SR_UNIT_DECIBEL_VOLT;
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analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
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} else if ((u = strstr(e, "Ohms"))) {
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analog->mq = SR_MQ_RESISTANCE;
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analog->unit = SR_UNIT_OHM;
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if (is_oor)
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*analog->data = INFINITY;
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else if (e[0] == 'k')
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*analog->data *= 1000;
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else if (e[0] == 'M')
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*analog->data *= 1000000;
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} else if (!strcmp(e, "nS")) {
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analog->mq = SR_MQ_CONDUCTANCE;
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analog->unit = SR_UNIT_SIEMENS;
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*analog->data /= 1e+9;
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} else if ((u = strstr(e, "Farads"))) {
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analog->mq = SR_MQ_CAPACITANCE;
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analog->unit = SR_UNIT_FARAD;
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if (!is_oor) {
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if (e[0] == 'm')
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*analog->data /= 1e+3;
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else if (e[0] == 'u')
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*analog->data /= 1e+6;
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else if (e[0] == 'n')
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*analog->data /= 1e+9;
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}
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} else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
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analog->mq = SR_MQ_TEMPERATURE;
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if (u[4] == 'C')
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analog->unit = SR_UNIT_CELSIUS;
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else
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analog->unit = SR_UNIT_FAHRENHEIT;
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} else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
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analog->mq = SR_MQ_CURRENT;
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analog->unit = SR_UNIT_AMPERE;
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/* This catches "A AC", "A DC" and "A AC+DC". */
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if (strstr(u, "AC"))
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analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
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if (strstr(u, "DC"))
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analog->mqflags |= SR_MQFLAG_DC;
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if (!is_oor) {
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if (e[0] == 'm')
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*analog->data /= 1e+3;
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else if (e[0] == 'u')
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*analog->data /= 1e+6;
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}
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} else if ((u = strstr(e, "Hz"))) {
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analog->mq = SR_MQ_FREQUENCY;
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analog->unit = SR_UNIT_HERTZ;
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if (e[0] == 'k')
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*analog->data *= 1e+3;
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} else if (!strcmp(e, "%")) {
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analog->mq = SR_MQ_DUTY_CYCLE;
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analog->unit = SR_UNIT_PERCENTAGE;
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} else if ((u = strstr(e, "ms"))) {
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analog->mq = SR_MQ_PULSE_WIDTH;
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analog->unit = SR_UNIT_SECOND;
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*analog->data /= 1e+3;
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}
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if (analog->mq == -1) {
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/* Not a valid measurement. */
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g_free(analog->data);
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g_free(analog);
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analog = NULL;
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}
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return analog;
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}
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static struct sr_datafeed_analog *handle_qm_28x(const struct sr_dev_inst *sdi,
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char **tokens)
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{
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struct sr_datafeed_analog *analog;
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float fvalue;
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if (!tokens[1])
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return NULL;
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if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK || fvalue == 0.0) {
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sr_err("Invalid float '%s'.", tokens[0]);
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return NULL;
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}
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if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
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return NULL;
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if (!(analog->data = g_try_malloc(sizeof(float))))
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return NULL;
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analog->channels = sdi->channels;
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analog->num_samples = 1;
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*analog->data = fvalue;
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analog->mq = -1;
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if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) {
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analog->mq = SR_MQ_VOLTAGE;
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analog->unit = SR_UNIT_VOLT;
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if (!strcmp(tokens[2], "NORMAL")) {
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if (tokens[1][1] == 'A') {
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analog->mqflags |= SR_MQFLAG_AC;
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analog->mqflags |= SR_MQFLAG_RMS;
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} else
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analog->mqflags |= SR_MQFLAG_DC;
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} else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
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*analog->data = NAN;
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} else
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analog->mq = -1;
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} else if (!strcmp(tokens[1], "dBV") || !strcmp(tokens[1], "dBm")) {
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analog->mq = SR_MQ_VOLTAGE;
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if (tokens[1][2] == 'm')
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analog->unit = SR_UNIT_DECIBEL_MW;
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else
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analog->unit = SR_UNIT_DECIBEL_VOLT;
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analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
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} else if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) {
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if (!strcmp(tokens[2], "NORMAL")) {
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analog->mq = SR_MQ_TEMPERATURE;
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if (tokens[1][0] == 'C')
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analog->unit = SR_UNIT_CELSIUS;
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else
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analog->unit = SR_UNIT_FAHRENHEIT;
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}
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} else if (!strcmp(tokens[1], "OHM")) {
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if (!strcmp(tokens[3], "NONE")) {
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analog->mq = SR_MQ_RESISTANCE;
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analog->unit = SR_UNIT_OHM;
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if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
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*analog->data = INFINITY;
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} else if (strcmp(tokens[2], "NORMAL"))
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analog->mq = -1;
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} else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
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analog->mq = SR_MQ_CONTINUITY;
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analog->unit = SR_UNIT_BOOLEAN;
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*analog->data = 0.0;
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} else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
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analog->mq = SR_MQ_CONTINUITY;
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analog->unit = SR_UNIT_BOOLEAN;
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*analog->data = 1.0;
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}
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} else if (!strcmp(tokens[1], "F")
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&& !strcmp(tokens[2], "NORMAL")
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&& !strcmp(tokens[3], "NONE")) {
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analog->mq = SR_MQ_CAPACITANCE;
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analog->unit = SR_UNIT_FARAD;
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} else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) {
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analog->mq = SR_MQ_CURRENT;
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analog->unit = SR_UNIT_AMPERE;
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if (!strcmp(tokens[2], "NORMAL")) {
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if (tokens[1][1] == 'A') {
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analog->mqflags |= SR_MQFLAG_AC;
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analog->mqflags |= SR_MQFLAG_RMS;
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} else
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analog->mqflags |= SR_MQFLAG_DC;
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} else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
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*analog->data = NAN;
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} else
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analog->mq = -1;
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} if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
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analog->mq = SR_MQ_FREQUENCY;
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analog->unit = SR_UNIT_HERTZ;
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} else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
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analog->mq = SR_MQ_DUTY_CYCLE;
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analog->unit = SR_UNIT_PERCENTAGE;
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} else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
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analog->mq = SR_MQ_PULSE_WIDTH;
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analog->unit = SR_UNIT_SECOND;
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} else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
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analog->mq = SR_MQ_CONDUCTANCE;
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analog->unit = SR_UNIT_SIEMENS;
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}
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if (analog->mq == -1) {
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/* Not a valid measurement. */
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g_free(analog->data);
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g_free(analog);
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analog = NULL;
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}
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return analog;
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}
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static void handle_qm_19x_meta(const struct sr_dev_inst *sdi, char **tokens)
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{
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struct dev_context *devc;
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int meas_type, meas_unit, meas_char, i;
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/* Make sure we have 7 valid tokens. */
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for (i = 0; tokens[i] && i < 7; i++);
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if (i != 7)
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return;
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if (strcmp(tokens[1], "1"))
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/* Invalid measurement. */
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return;
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if (strcmp(tokens[2], "3"))
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/* Only interested in input from the meter mode source. */
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return;
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devc = sdi->priv;
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/* Measurement type 11 == absolute, 19 = relative */
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meas_type = strtol(tokens[0], NULL, 10);
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if (meas_type != 11 && meas_type != 19)
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/* Device is in some mode we don't support. */
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return;
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/* We might get metadata for absolute and relative mode (if the device
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* is in relative mode). In that case, relative takes precedence. */
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if (meas_type == 11 && devc->meas_type == 19)
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return;
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meas_unit = strtol(tokens[3], NULL, 10);
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if (meas_unit == 0)
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/* Device is turned off. Really. */
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return;
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meas_char = strtol(tokens[4], NULL, 10);
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devc->mq = devc->unit = -1;
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devc->mqflags = 0;
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switch (meas_unit) {
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case 1:
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devc->mq = SR_MQ_VOLTAGE;
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devc->unit = SR_UNIT_VOLT;
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if (meas_char == 1)
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devc->mqflags |= SR_MQFLAG_DC;
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else if (meas_char == 2)
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devc->mqflags |= SR_MQFLAG_AC;
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else if (meas_char == 3)
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devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
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else if (meas_char == 15)
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devc->mqflags |= SR_MQFLAG_DIODE;
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break;
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case 2:
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devc->mq = SR_MQ_CURRENT;
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devc->unit = SR_UNIT_AMPERE;
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if (meas_char == 1)
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devc->mqflags |= SR_MQFLAG_DC;
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else if (meas_char == 2)
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devc->mqflags |= SR_MQFLAG_AC;
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else if (meas_char == 3)
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devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
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break;
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case 3:
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if (meas_char == 1) {
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devc->mq = SR_MQ_RESISTANCE;
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devc->unit = SR_UNIT_OHM;
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} else if (meas_char == 16) {
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devc->mq = SR_MQ_CONTINUITY;
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devc->unit = SR_UNIT_BOOLEAN;
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}
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break;
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case 12:
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devc->mq = SR_MQ_TEMPERATURE;
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devc->unit = SR_UNIT_CELSIUS;
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break;
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case 13:
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devc->mq = SR_MQ_TEMPERATURE;
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devc->unit = SR_UNIT_FAHRENHEIT;
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break;
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default:
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sr_dbg("unknown unit: %d", meas_unit);
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}
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if (devc->mq == -1 && devc->unit == -1)
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return;
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/* If we got here, we know how to interpret the measurement. */
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devc->meas_type = meas_type;
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if (meas_type == 11)
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/* Absolute meter reading. */
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devc->is_relative = FALSE;
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else if (!strcmp(tokens[0], "19"))
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/* Relative meter reading. */
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devc->is_relative = TRUE;
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}
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static void handle_qm_19x_data(const struct sr_dev_inst *sdi, char **tokens)
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{
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struct dev_context *devc;
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struct sr_datafeed_packet packet;
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struct sr_datafeed_analog analog;
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float fvalue;
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if (!strcmp(tokens[0], "9.9E+37")) {
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/* An invalid measurement shows up on the display as "OL", but
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* comes through like this. Since comparing 38-digit floats
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* is rather problematic, we'll cut through this here. */
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fvalue = NAN;
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} else {
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if (sr_atof_ascii(tokens[0], &fvalue) != SR_OK || fvalue == 0.0) {
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sr_err("Invalid float '%s'.", tokens[0]);
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return;
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}
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}
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devc = sdi->priv;
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if (devc->mq == -1 || devc->unit == -1)
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/* Don't have valid metadata yet. */
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return;
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if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
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fvalue = INFINITY;
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else if (devc->mq == SR_MQ_CONTINUITY) {
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if (isnan(fvalue))
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fvalue = 0.0;
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else
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fvalue = 1.0;
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}
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analog.channels = sdi->channels;
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analog.num_samples = 1;
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analog.data = &fvalue;
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analog.mq = devc->mq;
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analog.unit = devc->unit;
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analog.mqflags = 0;
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packet.type = SR_DF_ANALOG;
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packet.payload = &analog;
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sr_session_send(devc->cb_data, &packet);
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devc->num_samples++;
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}
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static void handle_line(const struct sr_dev_inst *sdi)
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{
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struct dev_context *devc;
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struct sr_serial_dev_inst *serial;
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struct sr_datafeed_packet packet;
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struct sr_datafeed_analog *analog;
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int num_tokens, n, i;
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char cmd[16], **tokens;
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devc = sdi->priv;
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serial = sdi->conn;
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sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
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if (devc->buflen == 1) {
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if (devc->buf[0] != '0') {
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/* Not just a CMD_ACK from the query command. */
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sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
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devc->expect_response = FALSE;
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}
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devc->buflen = 0;
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return;
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}
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analog = NULL;
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tokens = g_strsplit(devc->buf, ",", 0);
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if (tokens[0]) {
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if (devc->profile->model == FLUKE_187 || devc->profile->model == FLUKE_189) {
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devc->expect_response = FALSE;
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analog = handle_qm_18x(sdi, tokens);
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} else if (devc->profile->model == FLUKE_287) {
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devc->expect_response = FALSE;
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analog = handle_qm_28x(sdi, tokens);
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} else if (devc->profile->model == FLUKE_190) {
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devc->expect_response = FALSE;
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for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
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if (num_tokens >= 7) {
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/* Response to QM: this is a comma-separated list of
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* fields with metadata about the measurement. This
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* format can return multiple sets of metadata,
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* split into sets of 7 tokens each. */
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devc->meas_type = 0;
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for (i = 0; i < num_tokens; i += 7)
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handle_qm_19x_meta(sdi, tokens + i);
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if (devc->meas_type) {
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/* Slip the request in now, before the main
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* timer loop asks for metadata again. */
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n = sprintf(cmd, "QM %d\r", devc->meas_type);
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|
if (serial_write(serial, cmd, n) == -1)
|
|
sr_err("Unable to send QM (measurement): %s.",
|
|
strerror(errno));
|
|
}
|
|
} else {
|
|
/* Response to QM <n> measurement request. */
|
|
handle_qm_19x_data(sdi, tokens);
|
|
}
|
|
}
|
|
}
|
|
g_strfreev(tokens);
|
|
devc->buflen = 0;
|
|
|
|
if (analog) {
|
|
/* Got a measurement. */
|
|
packet.type = SR_DF_ANALOG;
|
|
packet.payload = analog;
|
|
sr_session_send(devc->cb_data, &packet);
|
|
devc->num_samples++;
|
|
g_free(analog->data);
|
|
g_free(analog);
|
|
}
|
|
|
|
}
|
|
|
|
SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
|
|
{
|
|
struct sr_dev_inst *sdi;
|
|
struct dev_context *devc;
|
|
struct sr_serial_dev_inst *serial;
|
|
int len;
|
|
int64_t now, elapsed;
|
|
|
|
(void)fd;
|
|
|
|
if (!(sdi = cb_data))
|
|
return TRUE;
|
|
|
|
if (!(devc = sdi->priv))
|
|
return TRUE;
|
|
|
|
serial = sdi->conn;
|
|
if (revents == G_IO_IN) {
|
|
/* Serial data arrived. */
|
|
while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
|
|
len = serial_read(serial, devc->buf + devc->buflen, 1);
|
|
if (len < 1)
|
|
break;
|
|
devc->buflen++;
|
|
*(devc->buf + devc->buflen) = '\0';
|
|
if (*(devc->buf + devc->buflen - 1) == '\r') {
|
|
*(devc->buf + --devc->buflen) = '\0';
|
|
handle_line(sdi);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
|
|
sdi->driver->dev_acquisition_stop(sdi, cb_data);
|
|
return TRUE;
|
|
}
|
|
|
|
now = g_get_monotonic_time() / 1000;
|
|
elapsed = now - devc->cmd_sent_at;
|
|
/* Send query command at poll_period interval, or after 1 second
|
|
* has elapsed. This will make it easier to recover from any
|
|
* out-of-sync or temporary disconnect issues. */
|
|
if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
|
|
|| elapsed > devc->profile->timeout) {
|
|
if (serial_write(serial, "QM\r", 3) == -1)
|
|
sr_err("Unable to send QM: %s.", strerror(errno));
|
|
devc->cmd_sent_at = now;
|
|
devc->expect_response = TRUE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|