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