libsigrok/hardware/agilent-dmm/sched.c

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/*
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* This file is part of the libsigrok project.
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*
* 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 "agilent-dmm.h"
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <math.h>
static void dispatch(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
const struct agdmm_job *jobs;
int64_t now;
int i;
devc = sdi->priv;
jobs = devc->profile->jobs;
now = g_get_monotonic_time() / 1000;
for (i = 0; (&jobs[i])->interval; i++) {
if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
sr_spew("Running job %d.", i);
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(&jobs[i])->send(sdi);
devc->jobqueue[i] = now;
}
}
}
static void receive_line(const struct sr_dev_inst *sdi)
{
struct dev_context *devc;
const struct agdmm_recv *recvs, *recv;
GRegex *reg;
GMatchInfo *match;
int i;
devc = sdi->priv;
/* Strip CRLF */
while (devc->buflen) {
if (*(devc->buf + devc->buflen - 1) == '\r'
|| *(devc->buf + devc->buflen - 1) == '\n')
*(devc->buf + --devc->buflen) = '\0';
else
break;
}
sr_spew("Received '%s'.", devc->buf);
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recv = NULL;
recvs = devc->profile->recvs;
for (i = 0; (&recvs[i])->recv_regex; i++) {
reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
recv = &recvs[i];
break;
}
g_match_info_unref(match);
g_regex_unref(reg);
}
if (recv) {
recv->recv(sdi, match);
g_match_info_unref(match);
g_regex_unref(reg);
} else
sr_dbg("Unknown line '%s'.", devc->buf);
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/* Done with this. */
devc->buflen = 0;
}
SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
{
struct sr_dev_inst *sdi;
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struct dev_context *devc;
struct sr_serial_dev_inst *serial;
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int len;
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(void)fd;
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if (!(sdi = cb_data))
return TRUE;
if (!(devc = sdi->priv))
return TRUE;
serial = sdi->conn;
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if (revents == G_IO_IN) {
/* Serial data arrived. */
while(AGDMM_BUFSIZE - devc->buflen - 1 > 0) {
len = serial_read(serial, devc->buf + devc->buflen, 1);
if (len < 1)
break;
devc->buflen += len;
*(devc->buf + devc->buflen) = '\0';
if (*(devc->buf + devc->buflen - 1) == '\n') {
/* End of line */
receive_line(sdi);
break;
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}
}
}
dispatch(sdi);
if (devc->limit_samples && devc->num_samples >= devc->limit_samples)
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sdi->driver->dev_acquisition_stop(sdi, cb_data);
return TRUE;
}
static int agdmm_send(const struct sr_dev_inst *sdi, const char *cmd)
{
struct sr_serial_dev_inst *serial;
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char buf[32];
serial = sdi->conn;
sr_spew("Sending '%s'.", cmd);
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strncpy(buf, cmd, 28);
if (!strncmp(buf, "*IDN?", 5))
strncat(buf, "\r\n", 32);
else
strncat(buf, "\n\r\n", 32);
if (serial_write(serial, buf, strlen(buf)) == -1) {
sr_err("Failed to send: %s.", strerror(errno));
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return SR_ERR;
}
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return SR_OK;
}
static int send_stat(const struct sr_dev_inst *sdi)
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{
return agdmm_send(sdi, "STAT?");
}
static int recv_stat_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match)
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{
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struct dev_context *devc;
char *s;
devc = sdi->priv;
s = g_match_info_fetch(match, 1);
sr_spew("STAT response '%s'.", s);
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/* Max, Min or Avg mode -- no way to tell which, so we'll
* set both flags to denote it's not a normal measurement. */
if (s[0] == '1')
devc->cur_mqflags |= SR_MQFLAG_MAX | SR_MQFLAG_MIN;
else
devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN);
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if (s[1] == '1')
devc->cur_mqflags |= SR_MQFLAG_RELATIVE;
else
devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
/* Triggered or auto hold modes. */
if (s[2] == '1' || s[3] == '1')
devc->cur_mqflags |= SR_MQFLAG_HOLD;
else
devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
/* Temp/aux mode. */
if (s[7] == '1')
devc->mode_tempaux = TRUE;
else
devc->mode_tempaux = FALSE;
/* Continuity mode. */
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if (s[16] == '1')
devc->mode_continuity = TRUE;
else
devc->mode_continuity = FALSE;
g_free(s);
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return SR_OK;
}
static int recv_stat_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
struct dev_context *devc;
char *s;
devc = sdi->priv;
s = g_match_info_fetch(match, 1);
sr_spew("STAT response '%s'.", s);
/* Peak hold mode. */
if (s[4] == '1')
devc->cur_mqflags |= SR_MQFLAG_MAX;
else
devc->cur_mqflags &= ~SR_MQFLAG_MAX;
/* Triggered hold mode. */
if (s[7] == '1')
devc->cur_mqflags |= SR_MQFLAG_HOLD;
else
devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
g_free(s);
return SR_OK;
}
static int send_fetc(const struct sr_dev_inst *sdi)
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{
return agdmm_send(sdi, "FETC?");
}
static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match)
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{
struct dev_context *devc;
struct sr_datafeed_packet packet;
struct sr_datafeed_analog analog;
float fvalue;
char *mstr, *eptr;
sr_spew("FETC reply '%s'.", g_match_info_get_string(match));
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devc = sdi->priv;
if (devc->cur_mq == -1)
/* Haven't seen configuration yet, so can't know what
* the fetched float means. Not really an error, we'll
* get metadata soon enough. */
return SR_OK;
if (!strcmp(g_match_info_get_string(match), "+9.90000000E+37")) {
/* An invalid measurement shows up on the display as "O.L", but
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* comes through like this. Since comparing 38-digit floats
* is rather problematic, we'll cut through this here. */
fvalue = NAN;
} else {
mstr = g_match_info_fetch(match, 1);
fvalue = strtof(mstr, &eptr);
g_free(mstr);
if (fvalue == 0.0 && eptr == mstr) {
sr_err("Invalid float.");
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return SR_ERR;
}
if (devc->cur_divider > 0)
fvalue /= devc->cur_divider;
}
memset(&analog, 0, sizeof(struct sr_datafeed_analog));
analog.mq = devc->cur_mq;
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analog.unit = devc->cur_unit;
analog.mqflags = devc->cur_mqflags;
analog.probes = sdi->probes;
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analog.num_samples = 1;
analog.data = &fvalue;
packet.type = SR_DF_ANALOG;
packet.payload = &analog;
sr_session_send(devc->cb_data, &packet);
devc->num_samples++;
return SR_OK;
}
static int send_conf(const struct sr_dev_inst *sdi)
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{
return agdmm_send(sdi, "CONF?");
}
static int recv_conf_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match)
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{
struct dev_context *devc;
char *mstr;
sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
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devc = sdi->priv;
mstr = g_match_info_fetch(match, 1);
if (!strcmp(mstr, "V")) {
devc->cur_mq = SR_MQ_VOLTAGE;
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devc->cur_unit = SR_UNIT_VOLT;
devc->cur_mqflags = 0;
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devc->cur_divider = 0;
} else if(!strcmp(mstr, "MV")) {
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if (devc->mode_tempaux) {
devc->cur_mq = SR_MQ_TEMPERATURE;
/* No way to detect whether Fahrenheit or Celcius
* is used, so we'll just default to Celcius. */
devc->cur_unit = SR_UNIT_CELSIUS;
devc->cur_mqflags = 0;
devc->cur_divider = 0;
} else {
devc->cur_mq = SR_MQ_VOLTAGE;
devc->cur_unit = SR_UNIT_VOLT;
devc->cur_mqflags = 0;
devc->cur_divider = 1000;
}
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} else if(!strcmp(mstr, "A")) {
devc->cur_mq = SR_MQ_CURRENT;
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devc->cur_unit = SR_UNIT_AMPERE;
devc->cur_mqflags = 0;
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devc->cur_divider = 0;
} else if(!strcmp(mstr, "UA")) {
devc->cur_mq = SR_MQ_CURRENT;
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devc->cur_unit = SR_UNIT_AMPERE;
devc->cur_mqflags = 0;
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devc->cur_divider = 1000000;
} else if(!strcmp(mstr, "FREQ")) {
devc->cur_mq = SR_MQ_FREQUENCY;
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devc->cur_unit = SR_UNIT_HERTZ;
devc->cur_mqflags = 0;
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devc->cur_divider = 0;
} else if(!strcmp(mstr, "RES")) {
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if (devc->mode_continuity) {
devc->cur_mq = SR_MQ_CONTINUITY;
devc->cur_unit = SR_UNIT_BOOLEAN;
} else {
devc->cur_mq = SR_MQ_RESISTANCE;
devc->cur_unit = SR_UNIT_OHM;
}
devc->cur_mqflags = 0;
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devc->cur_divider = 0;
} else if(!strcmp(mstr, "CAP")) {
devc->cur_mq = SR_MQ_CAPACITANCE;
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devc->cur_unit = SR_UNIT_FARAD;
devc->cur_mqflags = 0;
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devc->cur_divider = 0;
} else
sr_dbg("Unknown first argument.");
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g_free(mstr);
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if (g_match_info_get_match_count(match) == 4) {
mstr = g_match_info_fetch(match, 3);
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/* Third value, if present, is always AC or DC. */
if (!strcmp(mstr, "AC"))
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devc->cur_mqflags |= SR_MQFLAG_AC;
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else if (!strcmp(mstr, "DC"))
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devc->cur_mqflags |= SR_MQFLAG_DC;
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else
sr_dbg("Unknown third argument.");
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g_free(mstr);
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} else
devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
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return SR_OK;
}
static int recv_conf_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
struct dev_context *devc;
char *mstr;
sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
devc = sdi->priv;
mstr = g_match_info_fetch(match, 1);
if (!strncmp(mstr, "VOLT", 4)) {
devc->cur_mq = SR_MQ_VOLTAGE;
devc->cur_unit = SR_UNIT_VOLT;
devc->cur_mqflags = 0;
devc->cur_divider = 0;
if (mstr[4] == ':') {
if (!strcmp(mstr + 4, "AC"))
devc->cur_mqflags |= SR_MQFLAG_AC;
else if (!strcmp(mstr + 4, "DC"))
devc->cur_mqflags |= SR_MQFLAG_DC;
else
/* "ACDC" appears as well, no idea what it means. */
devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
} else
devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
} else if(!strcmp(mstr, "CURR")) {
devc->cur_mq = SR_MQ_CURRENT;
devc->cur_unit = SR_UNIT_AMPERE;
devc->cur_mqflags = 0;
devc->cur_divider = 0;
} else if(!strcmp(mstr, "RES")) {
if (devc->mode_continuity) {
devc->cur_mq = SR_MQ_CONTINUITY;
devc->cur_unit = SR_UNIT_BOOLEAN;
} else {
devc->cur_mq = SR_MQ_RESISTANCE;
devc->cur_unit = SR_UNIT_OHM;
}
devc->cur_mqflags = 0;
devc->cur_divider = 0;
} else
sr_dbg("Unknown first argument.");
g_free(mstr);
return SR_OK;
}
/* At least the 123x and 125x appear to have this. */
static int recv_conf(const struct sr_dev_inst *sdi, GMatchInfo *match)
{
struct dev_context *devc;
char *mstr;
sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
devc = sdi->priv;
mstr = g_match_info_fetch(match, 1);
if(!strcmp(mstr, "DIOD")) {
devc->cur_mq = SR_MQ_VOLTAGE;
devc->cur_unit = SR_UNIT_VOLT;
devc->cur_mqflags = SR_MQFLAG_DIODE;
devc->cur_divider = 0;
} else
sr_dbg("Unknown single argument.");
g_free(mstr);
return SR_OK;
}
/* This comes in whenever the rotary switch is changed to a new position.
* We could use it to determine the major measurement mode, but we already
* have the output of CONF? for that, which is more detailed. However
* we do need to catch this here, or it'll show up in some other output. */
static int recv_switch(const struct sr_dev_inst *sdi, GMatchInfo *match)
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{
(void)sdi;
sr_spew("Switch '%s'.", g_match_info_get_string(match));
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return SR_OK;
}
SR_PRIV const struct agdmm_job agdmm_jobs_u123x[] = {
{ 143, send_stat },
{ 1000, send_conf },
{ 143, send_fetc },
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{ 0, NULL }
};
SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = {
{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x },
{ "^\\*([0-9])$", recv_switch },
{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
{ "^\"(V|MV|A|UA|FREQ),(\\d),(AC|DC)\"$", recv_conf_u123x },
{ "^\"(RES|CAP),(\\d)\"$", recv_conf_u123x},
{ "^\"(DIOD)\"$", recv_conf },
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{ NULL, NULL }
};
SR_PRIV const struct agdmm_job agdmm_jobs_u125x[] = {
{ 143, send_stat },
{ 1000, send_conf },
{ 143, send_fetc },
{ 0, NULL }
};
SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = {
{ "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x },
{ "^\\*([0-9])$", recv_switch },
{ "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
{ "^(VOLT|CURR|RES|CAP) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
{ "^(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9\\.E\\-+]+)$", recv_conf_u125x },
{ "^\"(DIOD)\"$", recv_conf },
{ NULL, NULL }
};