2 * This file is part of the libsigrok project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
6 * This program is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 #include <libsigrok/libsigrok.h>
26 #include "libsigrok-internal.h"
27 #include "agilent-dmm.h"
29 static void dispatch(const struct sr_dev_inst *sdi)
31 struct dev_context *devc;
32 const struct agdmm_job *jobs;
37 jobs = devc->profile->jobs;
38 now = g_get_monotonic_time() / 1000;
39 for (i = 0; (&jobs[i])->interval; i++) {
40 if (now - devc->jobqueue[i] > (&jobs[i])->interval) {
41 sr_spew("Running job %d.", i);
42 (&jobs[i])->send(sdi);
43 devc->jobqueue[i] = now;
48 static void receive_line(const struct sr_dev_inst *sdi)
50 struct dev_context *devc;
51 const struct agdmm_recv *recvs, *recv;
59 while (devc->buflen) {
60 if (*(devc->buf + devc->buflen - 1) == '\r'
61 || *(devc->buf + devc->buflen - 1) == '\n')
62 *(devc->buf + --devc->buflen) = '\0';
66 sr_spew("Received '%s'.", devc->buf);
69 recvs = devc->profile->recvs;
70 for (i = 0; (&recvs[i])->recv_regex; i++) {
71 reg = g_regex_new((&recvs[i])->recv_regex, 0, 0, NULL);
72 if (g_regex_match(reg, (char *)devc->buf, 0, &match)) {
76 g_match_info_unref(match);
80 recv->recv(sdi, match);
81 g_match_info_unref(match);
84 sr_dbg("Unknown line '%s'.", devc->buf);
90 SR_PRIV int agdmm_receive_data(int fd, int revents, void *cb_data)
92 struct sr_dev_inst *sdi;
93 struct dev_context *devc;
94 struct sr_serial_dev_inst *serial;
102 if (!(devc = sdi->priv))
106 if (revents == G_IO_IN) {
107 /* Serial data arrived. */
108 while (AGDMM_BUFSIZE - devc->buflen - 1 > 0) {
109 len = serial_read_nonblocking(serial, devc->buf + devc->buflen, 1);
113 *(devc->buf + devc->buflen) = '\0';
114 if (*(devc->buf + devc->buflen - 1) == '\n') {
124 if (sr_sw_limits_check(&devc->limits))
125 sdi->driver->dev_acquisition_stop(sdi);
130 static int agdmm_send(const struct sr_dev_inst *sdi, const char *cmd)
132 struct sr_serial_dev_inst *serial;
137 sr_spew("Sending '%s'.", cmd);
138 strncpy(buf, cmd, 28);
139 if (!strncmp(buf, "*IDN?", 5))
142 strcat(buf, "\n\r\n");
143 if (serial_write_blocking(serial, buf, strlen(buf), SERIAL_WRITE_TIMEOUT_MS) < (int)strlen(buf)) {
144 sr_err("Failed to send.");
151 static int send_stat(const struct sr_dev_inst *sdi)
153 return agdmm_send(sdi, "STAT?");
156 static int recv_stat_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match)
158 struct dev_context *devc;
162 s = g_match_info_fetch(match, 1);
163 sr_spew("STAT response '%s'.", s);
165 /* Max, Min or Avg mode -- no way to tell which, so we'll
166 * set both flags to denote it's not a normal measurement. */
168 devc->cur_mqflags |= SR_MQFLAG_MAX | SR_MQFLAG_MIN;
170 devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN);
173 devc->cur_mqflags |= SR_MQFLAG_RELATIVE;
175 devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
177 /* Triggered or auto hold modes. */
178 if (s[2] == '1' || s[3] == '1')
179 devc->cur_mqflags |= SR_MQFLAG_HOLD;
181 devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
185 devc->mode_tempaux = TRUE;
187 devc->mode_tempaux = FALSE;
189 /* Continuity mode. */
191 devc->mode_continuity = TRUE;
193 devc->mode_continuity = FALSE;
200 static int recv_stat_u124x(const struct sr_dev_inst *sdi, GMatchInfo *match)
202 struct dev_context *devc;
206 s = g_match_info_fetch(match, 1);
207 sr_spew("STAT response '%s'.", s);
209 /* Max, Min or Avg mode -- no way to tell which, so we'll
210 * set both flags to denote it's not a normal measurement. */
212 devc->cur_mqflags |= SR_MQFLAG_MAX | SR_MQFLAG_MIN;
214 devc->cur_mqflags &= ~(SR_MQFLAG_MAX | SR_MQFLAG_MIN);
217 devc->cur_mqflags |= SR_MQFLAG_RELATIVE;
219 devc->cur_mqflags &= ~SR_MQFLAG_RELATIVE;
223 devc->cur_mqflags |= SR_MQFLAG_HOLD;
225 devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
232 static int recv_stat_u125x(const struct sr_dev_inst *sdi, GMatchInfo *match)
234 struct dev_context *devc;
238 s = g_match_info_fetch(match, 1);
239 sr_spew("STAT response '%s'.", s);
241 /* Peak hold mode. */
243 devc->cur_mqflags |= SR_MQFLAG_MAX;
245 devc->cur_mqflags &= ~SR_MQFLAG_MAX;
247 /* Triggered hold mode. */
249 devc->cur_mqflags |= SR_MQFLAG_HOLD;
251 devc->cur_mqflags &= ~SR_MQFLAG_HOLD;
258 static int send_fetc(const struct sr_dev_inst *sdi)
260 return agdmm_send(sdi, "FETC?");
263 static int recv_fetc(const struct sr_dev_inst *sdi, GMatchInfo *match)
265 struct dev_context *devc;
266 struct sr_datafeed_packet packet;
267 struct sr_datafeed_analog analog;
268 struct sr_analog_encoding encoding;
269 struct sr_analog_meaning meaning;
270 struct sr_analog_spec spec;
275 sr_spew("FETC reply '%s'.", g_match_info_get_string(match));
278 if (devc->cur_mq == -1)
279 /* Haven't seen configuration yet, so can't know what
280 * the fetched float means. Not really an error, we'll
281 * get metadata soon enough. */
284 s = g_match_info_get_string(match);
285 if (!strcmp(s, "-9.90000000E+37") || !strcmp(s, "+9.90000000E+37")) {
286 /* An invalid measurement shows up on the display as "O.L", but
287 * comes through like this. Since comparing 38-digit floats
288 * is rather problematic, we'll cut through this here. */
291 mstr = g_match_info_fetch(match, 1);
292 if (sr_atof_ascii(mstr, &fvalue) != SR_OK) {
294 sr_dbg("Invalid float.");
298 if (devc->cur_exponent != 0)
299 fvalue *= powf(10, devc->cur_exponent);
302 sr_analog_init(&analog, &encoding, &meaning, &spec,
303 devc->cur_digits - devc->cur_exponent);
304 analog.meaning->mq = devc->cur_mq;
305 analog.meaning->unit = devc->cur_unit;
306 analog.meaning->mqflags = devc->cur_mqflags;
307 analog.meaning->channels = sdi->channels;
308 analog.num_samples = 1;
309 analog.data = &fvalue;
310 encoding.digits = devc->cur_encoding - devc->cur_exponent;
311 packet.type = SR_DF_ANALOG;
312 packet.payload = &analog;
313 sr_session_send(sdi, &packet);
315 sr_sw_limits_update_samples_read(&devc->limits, 1);
320 static int send_conf(const struct sr_dev_inst *sdi)
322 return agdmm_send(sdi, "CONF?");
325 static int recv_conf_u123x(const struct sr_dev_inst *sdi, GMatchInfo *match)
327 struct dev_context *devc;
331 sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
334 rstr = g_match_info_fetch(match, 2);
336 sr_atoi(rstr, &resolution);
339 mstr = g_match_info_fetch(match, 1);
340 if (!strcmp(mstr, "V")) {
341 devc->cur_mq = SR_MQ_VOLTAGE;
342 devc->cur_unit = SR_UNIT_VOLT;
343 devc->cur_mqflags = 0;
344 devc->cur_exponent = 0;
345 devc->cur_digits = 4 - resolution;
346 } else if (!strcmp(mstr, "MV")) {
347 if (devc->mode_tempaux) {
348 devc->cur_mq = SR_MQ_TEMPERATURE;
349 /* No way to detect whether Fahrenheit or Celsius
350 * is used, so we'll just default to Celsius. */
351 devc->cur_unit = SR_UNIT_CELSIUS;
352 devc->cur_mqflags = 0;
353 devc->cur_exponent = 0;
354 devc->cur_digits = 1;
356 devc->cur_mq = SR_MQ_VOLTAGE;
357 devc->cur_unit = SR_UNIT_VOLT;
358 devc->cur_mqflags = 0;
359 devc->cur_exponent = -3;
360 devc->cur_digits = 5 - resolution;
362 } else if (!strcmp(mstr, "A")) {
363 devc->cur_mq = SR_MQ_CURRENT;
364 devc->cur_unit = SR_UNIT_AMPERE;
365 devc->cur_mqflags = 0;
366 devc->cur_exponent = 0;
367 devc->cur_digits = 3 - resolution;
368 } else if (!strcmp(mstr, "UA")) {
369 devc->cur_mq = SR_MQ_CURRENT;
370 devc->cur_unit = SR_UNIT_AMPERE;
371 devc->cur_mqflags = 0;
372 devc->cur_exponent = -6;
373 devc->cur_digits = 8 - resolution;
374 } else if (!strcmp(mstr, "FREQ")) {
375 devc->cur_mq = SR_MQ_FREQUENCY;
376 devc->cur_unit = SR_UNIT_HERTZ;
377 devc->cur_mqflags = 0;
378 devc->cur_exponent = 0;
379 devc->cur_digits = 2 - resolution;
380 } else if (!strcmp(mstr, "RES")) {
381 if (devc->mode_continuity) {
382 devc->cur_mq = SR_MQ_CONTINUITY;
383 devc->cur_unit = SR_UNIT_BOOLEAN;
385 devc->cur_mq = SR_MQ_RESISTANCE;
386 devc->cur_unit = SR_UNIT_OHM;
388 devc->cur_mqflags = 0;
389 devc->cur_exponent = 0;
390 devc->cur_digits = 1 - resolution;
391 } else if (!strcmp(mstr, "DIOD")) {
392 devc->cur_mq = SR_MQ_VOLTAGE;
393 devc->cur_unit = SR_UNIT_VOLT;
394 devc->cur_mqflags = SR_MQFLAG_DIODE;
395 devc->cur_exponent = 0;
396 devc->cur_digits = 3;
397 } else if (!strcmp(mstr, "CAP")) {
398 devc->cur_mq = SR_MQ_CAPACITANCE;
399 devc->cur_unit = SR_UNIT_FARAD;
400 devc->cur_mqflags = 0;
401 devc->cur_exponent = 0;
402 devc->cur_digits = 9 - resolution;
404 sr_dbg("Unknown first argument.");
407 /* This is based on guess, supposing similarity with other models. */
408 devc->cur_encoding = devc->cur_digits + 1;
410 if (g_match_info_get_match_count(match) == 4) {
411 mstr = g_match_info_fetch(match, 3);
412 /* Third value, if present, is always AC or DC. */
413 if (!strcmp(mstr, "AC")) {
414 devc->cur_mqflags |= SR_MQFLAG_AC;
415 if (devc->cur_mq == SR_MQ_VOLTAGE)
416 devc->cur_mqflags |= SR_MQFLAG_RMS;
417 } else if (!strcmp(mstr, "DC")) {
418 devc->cur_mqflags |= SR_MQFLAG_DC;
420 sr_dbg("Unknown first argument '%s'.", mstr);
424 devc->cur_mqflags &= ~(SR_MQFLAG_AC | SR_MQFLAG_DC);
429 static int recv_conf_u124x_5x(const struct sr_dev_inst *sdi, GMatchInfo *match)
431 struct dev_context *devc;
432 char *mstr, *rstr, *m2;
435 sr_spew("CONF? response '%s'.", g_match_info_get_string(match));
438 rstr = g_match_info_fetch(match, 4);
439 if (rstr && sr_atoi(rstr, &resolution) == SR_OK) {
440 devc->cur_digits = -resolution;
441 devc->cur_encoding = -resolution + 1;
445 mstr = g_match_info_fetch(match, 1);
446 if (!strncmp(mstr, "VOLT", 4)) {
447 devc->cur_mq = SR_MQ_VOLTAGE;
448 devc->cur_unit = SR_UNIT_VOLT;
449 devc->cur_mqflags = 0;
450 devc->cur_exponent = 0;
451 if (mstr[4] == ':') {
452 if (!strncmp(mstr + 5, "ACDC", 4)) {
454 devc->cur_mqflags |= SR_MQFLAG_AC | SR_MQFLAG_DC | SR_MQFLAG_RMS;
455 } else if (!strncmp(mstr + 5, "AC", 2)) {
456 devc->cur_mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
457 } else if (!strncmp(mstr + 5, "DC", 2)) {
458 devc->cur_mqflags |= SR_MQFLAG_DC;
461 devc->cur_mqflags |= SR_MQFLAG_DC;
462 } else if (!strncmp(mstr, "CURR", 4)) {
463 devc->cur_mq = SR_MQ_CURRENT;
464 devc->cur_unit = SR_UNIT_AMPERE;
465 devc->cur_mqflags = 0;
466 devc->cur_exponent = 0;
467 if (mstr[4] == ':') {
468 if (!strncmp(mstr + 5, "ACDC", 4)) {
470 devc->cur_mqflags |= SR_MQFLAG_AC | SR_MQFLAG_DC | SR_MQFLAG_RMS;
471 } else if (!strncmp(mstr + 5, "AC", 2)) {
472 devc->cur_mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
473 } else if (!strncmp(mstr + 5, "DC", 2)) {
474 devc->cur_mqflags |= SR_MQFLAG_DC;
477 devc->cur_mqflags |= SR_MQFLAG_DC;
478 } else if (!strcmp(mstr, "RES")) {
479 devc->cur_mq = SR_MQ_RESISTANCE;
480 devc->cur_unit = SR_UNIT_OHM;
481 devc->cur_mqflags = 0;
482 devc->cur_exponent = 0;
483 } else if (!strcmp(mstr, "CAP")) {
484 devc->cur_mq = SR_MQ_CAPACITANCE;
485 devc->cur_unit = SR_UNIT_FARAD;
486 devc->cur_mqflags = 0;
487 devc->cur_exponent = 0;
488 } else if (!strcmp(mstr, "FREQ")) {
489 devc->cur_mq = SR_MQ_FREQUENCY;
490 devc->cur_unit = SR_UNIT_HERTZ;
491 devc->cur_mqflags = 0;
492 devc->cur_exponent = 0;
493 } else if (!strcmp(mstr, "CONT")) {
494 devc->cur_mq = SR_MQ_CONTINUITY;
495 devc->cur_unit = SR_UNIT_BOOLEAN;
496 devc->cur_mqflags = 0;
497 devc->cur_exponent = 0;
498 } else if (!strcmp(mstr, "DIOD")) {
499 devc->cur_mq = SR_MQ_VOLTAGE;
500 devc->cur_unit = SR_UNIT_VOLT;
501 devc->cur_mqflags = SR_MQFLAG_DIODE;
502 devc->cur_exponent = 0;
503 devc->cur_digits = 4;
504 devc->cur_encoding = 5;
505 } else if (!strncmp(mstr, "T1", 2) || !strncmp(mstr, "T2", 2)) {
506 devc->cur_mq = SR_MQ_TEMPERATURE;
507 m2 = g_match_info_fetch(match, 2);
508 if (!strcmp(m2, "FAR"))
509 devc->cur_unit = SR_UNIT_FAHRENHEIT;
511 devc->cur_unit = SR_UNIT_CELSIUS;
513 devc->cur_mqflags = 0;
514 devc->cur_exponent = 0;
515 devc->cur_digits = 1;
516 devc->cur_encoding = 2;
517 } else if (!strcmp(mstr, "SCOU")) {
519 * Switch counter, not supported. Not sure what values
520 * come from FETC in this mode, or how they would map
523 } else if (!strncmp(mstr, "CPER:", 5)) {
524 devc->cur_mq = SR_MQ_CURRENT;
525 devc->cur_unit = SR_UNIT_PERCENTAGE;
526 devc->cur_mqflags = 0;
527 devc->cur_exponent = 0;
528 devc->cur_digits = 2;
529 devc->cur_encoding = 3;
531 sr_dbg("Unknown first argument '%s'.", mstr);
538 /* This comes in whenever the rotary switch is changed to a new position.
539 * We could use it to determine the major measurement mode, but we already
540 * have the output of CONF? for that, which is more detailed. However
541 * we do need to catch this here, or it'll show up in some other output. */
542 static int recv_switch(const struct sr_dev_inst *sdi, GMatchInfo *match)
546 sr_spew("Switch '%s'.", g_match_info_get_string(match));
551 /* Poll keys/switches and values at 7Hz, mode at 1Hz. */
552 SR_PRIV const struct agdmm_job agdmm_jobs_u12xx[] = {
559 SR_PRIV const struct agdmm_recv agdmm_recvs_u123x[] = {
560 { "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u123x },
561 { "^\\*([0-9])$", recv_switch },
562 { "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
563 { "^\"(V|MV|A|UA|FREQ),(\\d),(AC|DC)\"$", recv_conf_u123x },
564 { "^\"(RES|CAP),(\\d)\"$", recv_conf_u123x},
565 { "^\"(DIOD)\"$", recv_conf_u123x },
569 SR_PRIV const struct agdmm_recv agdmm_recvs_u124x[] = {
570 { "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u124x },
571 { "^\\*([0-9])$", recv_switch },
572 { "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
573 { "^\"(VOLT|CURR|RES|CAP|FREQ) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
574 { "^\"(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
575 { "^\"(CURR:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
576 { "^\"(CPER:[40]-20mA) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
577 { "^\"(T[0-9]:[A-Z]+) ([A-Z]+)\"$", recv_conf_u124x_5x },
578 { "^\"(DIOD)\"$", recv_conf_u124x_5x },
582 SR_PRIV const struct agdmm_recv agdmm_recvs_u125x[] = {
583 { "^\"(\\d\\d.{18}\\d)\"$", recv_stat_u125x },
584 { "^\\*([0-9])$", recv_switch },
585 { "^([-+][0-9]\\.[0-9]{8}E[-+][0-9]{2})$", recv_fetc },
586 { "^\"(VOLT|CURR|RES|CAP|FREQ) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
587 { "^\"(VOLT:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
588 { "^\"(CURR:[ACD]+) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
589 { "^\"(CPER:[40]-20mA) ([-+][0-9\\.E\\-+]+),([-+][0-9]\\.[0-9]{8}E([-+][0-9]{2}))\"$", recv_conf_u124x_5x },
590 { "^\"(T[0-9]:[A-Z]+) ([A-Z]+)\"$", recv_conf_u124x_5x },
591 { "^\"(DIOD)\"$", recv_conf_u124x_5x },