+++ /dev/null
-/*
- * This file is part of the sigrok 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 <glib.h>
-#include "libsigrok.h"
-#include "libsigrok-internal.h"
-#include "config.h"
-#include "fluke-dmm.h"
-#include <stdlib.h>
-#include <math.h>
-#include <string.h>
-#include <errno.h>
-
-
-static struct sr_datafeed_analog *handle_qm_v1(const struct sr_dev_inst *sdi,
- char **tokens)
-{
- struct sr_datafeed_analog *analog;
- float fvalue;
- char *e, *u;
- gboolean is_oor;
-
- (void)sdi;
- if (strcmp(tokens[0], "QM"))
- return NULL;
-
- if ((e = strstr(tokens[1], "Out of range"))) {
- is_oor = TRUE;
- fvalue = -1;
- } else {
- is_oor = FALSE;
- fvalue = strtof(tokens[1], &e);
- if (fvalue == 0.0 && e == tokens[1]) {
- /* Happens all the time, when switching modes. */
- sr_dbg("fluke-dmm: invalid float");
- return NULL;
- }
- }
- while(*e && *e == ' ')
- e++;
-
- analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
- analog->num_samples = 1;
- analog->data = g_try_malloc(sizeof(float));
- if (is_oor)
- *analog->data = NAN;
- else
- *analog->data = fvalue;
- analog->mq = -1;
-
- if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
- analog->mq = SR_MQ_VOLTAGE;
- analog->unit = SR_UNIT_VOLT;
- if (!is_oor && e[0] == 'm')
- *analog->data /= 1000;
- /* This catches "V AC", "V DC" and "V AC+DC". */
- if (strstr(u, "AC"))
- analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
- if (strstr(u, "DC"))
- analog->mqflags |= SR_MQFLAG_DC;
- } else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
- analog->mq = SR_MQ_VOLTAGE;
- if (u[2] == 'm')
- analog->unit = SR_UNIT_DECIBEL_MW;
- else
- analog->unit = SR_UNIT_DECIBEL_VOLT;
- analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
- } else if ((u = strstr(e, "Ohms"))) {
- analog->mq = SR_MQ_RESISTANCE;
- analog->unit = SR_UNIT_OHM;
- if (is_oor)
- *analog->data = INFINITY;
- else if (e[0] == 'k')
- *analog->data *= 1000;
- else if (e[0] == 'M')
- *analog->data *= 1000000;
- } else if (!strcmp(e, "nS")) {
- analog->mq = SR_MQ_CONDUCTANCE;
- analog->unit = SR_UNIT_SIEMENS;
- *analog->data /= 1e+9;
- } else if ((u = strstr(e, "Farads"))) {
- analog->mq = SR_MQ_CAPACITANCE;
- analog->unit = SR_UNIT_FARAD;
- if (!is_oor) {
- if (e[0] == 'm')
- *analog->data /= 1e+3;
- else if (e[0] == 'u')
- *analog->data /= 1e+6;
- else if (e[0] == 'n')
- *analog->data /= 1e+9;
- }
- } else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
- analog->mq = SR_MQ_TEMPERATURE;
- if (u[4] == 'C')
- analog->unit = SR_UNIT_CELSIUS;
- else
- analog->unit = SR_UNIT_FAHRENHEIT;
- } else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
- analog->mq = SR_MQ_CURRENT;
- analog->unit = SR_UNIT_AMPERE;
- /* This catches "A AC", "A DC" and "A AC+DC". */
- if (strstr(u, "AC"))
- analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
- if (strstr(u, "DC"))
- analog->mqflags |= SR_MQFLAG_DC;
- if (!is_oor) {
- if (e[0] == 'm')
- *analog->data /= 1e+3;
- else if (e[0] == 'u')
- *analog->data /= 1e+6;
- }
- } else if ((u = strstr(e, "Hz"))) {
- analog->mq = SR_MQ_FREQUENCY;
- analog->unit = SR_UNIT_HERTZ;
- if (e[0] == 'k')
- *analog->data *= 1e+3;
- } else if (!strcmp(e, "%")) {
- analog->mq = SR_MQ_DUTY_CYCLE;
- analog->unit = SR_UNIT_PERCENTAGE;
- } else if ((u = strstr(e, "ms"))) {
- analog->mq = SR_MQ_PULSE_WIDTH;
- analog->unit = SR_UNIT_SECOND;
- *analog->data /= 1e+3;
- }
-
- if (analog->mq == -1) {
- /* Not a valid measurement. */
- g_free(analog->data);
- g_free(analog);
- analog = NULL;
- }
-
- return analog;
-}
-
-static struct sr_datafeed_analog *handle_qm_v2(const struct sr_dev_inst *sdi,
- char **tokens)
-{
- struct sr_datafeed_analog *analog;
- float fvalue;
- char *eptr;
-
- (void)sdi;
- fvalue = strtof(tokens[0], &eptr);
- if (fvalue == 0.0 && eptr == tokens[0]) {
- sr_err("fluke-dmm: invalid float");
- return NULL;
- }
-
- analog = g_try_malloc0(sizeof(struct sr_datafeed_analog));
- analog->num_samples = 1;
- analog->data = g_try_malloc(sizeof(float));
- *analog->data = fvalue;
- analog->mq = -1;
-
- if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) {
- analog->mq = SR_MQ_VOLTAGE;
- analog->unit = SR_UNIT_VOLT;
- if (!strcmp(tokens[2], "NORMAL")) {
- if (tokens[1][1] == 'A') {
- analog->mqflags |= SR_MQFLAG_AC;
- analog->mqflags |= SR_MQFLAG_RMS;
- } else
- analog->mqflags |= SR_MQFLAG_DC;
- } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
- *analog->data = NAN;
- } else
- analog->mq = -1;
- } if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) {
- if (!strcmp(tokens[2], "NORMAL")) {
- analog->mq = SR_MQ_TEMPERATURE;
- if (tokens[1][0] == 'C')
- analog->unit = SR_UNIT_CELSIUS;
- else
- analog->unit = SR_UNIT_FAHRENHEIT;
- }
- } if (!strcmp(tokens[1], "OHM")) {
- if (!strcmp(tokens[3], "NONE")) {
- analog->mq = SR_MQ_RESISTANCE;
- analog->unit = SR_UNIT_OHM;
- if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
- *analog->data = INFINITY;
- } else if (strcmp(tokens[2], "NORMAL"))
- analog->mq = -1;
- } else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
- analog->mq = SR_MQ_CONTINUITY;
- analog->unit = SR_UNIT_BOOLEAN;
- *analog->data = 0.0;
- } else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
- analog->mq = SR_MQ_CONTINUITY;
- analog->unit = SR_UNIT_BOOLEAN;
- *analog->data = 1.0;
- }
- } if (!strcmp(tokens[1], "F")
- && !strcmp(tokens[2], "NORMAL")
- && !strcmp(tokens[3], "NONE")) {
- analog->mq = SR_MQ_CAPACITANCE;
- analog->unit = SR_UNIT_FARAD;
- } else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) {
- analog->mq = SR_MQ_CURRENT;
- analog->unit = SR_UNIT_AMPERE;
- if (!strcmp(tokens[2], "NORMAL")) {
- if (tokens[1][1] == 'A') {
- analog->mqflags |= SR_MQFLAG_AC;
- analog->mqflags |= SR_MQFLAG_RMS;
- } else
- analog->mqflags |= SR_MQFLAG_DC;
- } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
- *analog->data = NAN;
- } else
- analog->mq = -1;
- } if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
- analog->mq = SR_MQ_FREQUENCY;
- analog->unit = SR_UNIT_HERTZ;
- } if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
- analog->mq = SR_MQ_DUTY_CYCLE;
- analog->unit = SR_UNIT_PERCENTAGE;
- } if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
- analog->mq = SR_MQ_PULSE_WIDTH;
- analog->unit = SR_UNIT_SECOND;
- } if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
- analog->mq = SR_MQ_CONDUCTANCE;
- analog->unit = SR_UNIT_SIEMENS;
- }
-
- if (analog->mq == -1) {
- /* Not a valid measurement. */
- g_free(analog->data);
- g_free(analog);
- analog = NULL;
- }
-
- return analog;
-}
-
-static void handle_line(const struct sr_dev_inst *sdi)
-{
- struct dev_context *devc;
- struct sr_datafeed_packet packet;
- struct sr_datafeed_analog *analog;
- char **tokens;
-
- devc = sdi->priv;
- sr_spew("fluke-dmm: 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("fluke-dmm: 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] && tokens[1]) {
- if (devc->profile->model == FLUKE_187) {
- devc->expect_response = FALSE;
- analog = handle_qm_v1(sdi, tokens);
- } else if (devc->profile->model == FLUKE_287) {
- devc->expect_response = FALSE;
- analog = handle_qm_v2(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)
-{
- const struct sr_dev_inst *sdi;
- struct dev_context *devc;
- int len;
- int64_t now, elapsed;
-
- if (!(sdi = cb_data))
- return TRUE;
-
- if (!(devc = sdi->priv))
- return TRUE;
-
- if (revents == G_IO_IN) {
- /* Serial data arrived. */
- while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
- len = serial_read(fd, 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->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 recover from any out-of-sync
- * or temporary disconnect issues. */
- if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
- || elapsed > 1000) {
- sr_spew("fluke-dmm: sending QM");
- if (serial_write(devc->serial->fd, "QM\r", 3) == -1)
- sr_err("fluke-dmm: unable to send QM: %s", strerror(errno));
- devc->cmd_sent_at = now;
- devc->expect_response = TRUE;
- }
-
- return TRUE;
-}
-
-
projects / libsigrok.git / blobdiff