]> sigrok.org Git - libsigrok.git/blame - hardware/fluke-dmm/fluke.c
projects / libsigrok.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
colead-slm: Use sr_dev_inst to store connection handle
[libsigrok.git] / hardware / fluke-dmm / fluke.c
CommitLineData
d38d2ef0
BV		 1/*
2 * This file is part of the sigrok project.
3 *
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
5 *
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.
10 *
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.
15 *
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/>.
18 */
19
d38d2ef0
BV		 20#include <stdlib.h>
21#include <math.h>
22#include <string.h>
23#include <errno.h>
4cea0ff7
BV		 24#include <glib.h>
25#include "libsigrok.h"
26#include "libsigrok-internal.h"
27#include "fluke-dmm.h"
d38d2ef0
BV		 28
29
4cea0ff7 30static struct sr_datafeed_analog *handle_qm_18x(const struct sr_dev_inst *sdi,
fe31f8b9
BV		 31 char **tokens)
32{
33 struct sr_datafeed_analog *analog;
34 float fvalue;
35 char *e, *u;
36 gboolean is_oor;
37
38 (void)sdi;
64d33dc2 39
4cea0ff7 40 if (strcmp(tokens[0], "QM") || !tokens[1])
fe31f8b9
BV		 41 return NULL;
42
43 if ((e = strstr(tokens[1], "Out of range"))) {
44 is_oor = TRUE;
45 fvalue = -1;
46 } else {
47 is_oor = FALSE;
48 fvalue = strtof(tokens[1], &e);
49 if (fvalue == 0.0 && e == tokens[1]) {
50 /* Happens all the time, when switching modes. */
31d84da3 51 sr_dbg("Invalid float.");
fe31f8b9
BV		 52 return NULL;
53 }
54 }
55 while(*e && *e == ' ')
56 e++;
57
69e19dd7
BV		 58 if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
59 return NULL;
60 if (!(analog->data = g_try_malloc(sizeof(float))))
61 return NULL;
62 analog->probes = sdi->probes;
fe31f8b9 63 analog->num_samples = 1;
fe31f8b9
BV		 64 if (is_oor)
65 *analog->data = NAN;
66 else
67 *analog->data = fvalue;
68 analog->mq = -1;
69
70 if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
71 analog->mq = SR_MQ_VOLTAGE;
72 analog->unit = SR_UNIT_VOLT;
73 if (!is_oor && e[0] == 'm')
74 *analog->data /= 1000;
75 /* This catches "V AC", "V DC" and "V AC+DC". */
76 if (strstr(u, "AC"))
77 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
78 if (strstr(u, "DC"))
79 analog->mqflags |= SR_MQFLAG_DC;
80 } else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
81 analog->mq = SR_MQ_VOLTAGE;
82 if (u[2] == 'm')
83 analog->unit = SR_UNIT_DECIBEL_MW;
84 else
85 analog->unit = SR_UNIT_DECIBEL_VOLT;
86 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
87 } else if ((u = strstr(e, "Ohms"))) {
88 analog->mq = SR_MQ_RESISTANCE;
89 analog->unit = SR_UNIT_OHM;
90 if (is_oor)
91 *analog->data = INFINITY;
92 else if (e[0] == 'k')
93 *analog->data *= 1000;
94 else if (e[0] == 'M')
95 *analog->data *= 1000000;
96 } else if (!strcmp(e, "nS")) {
97 analog->mq = SR_MQ_CONDUCTANCE;
98 analog->unit = SR_UNIT_SIEMENS;
99 *analog->data /= 1e+9;
100 } else if ((u = strstr(e, "Farads"))) {
101 analog->mq = SR_MQ_CAPACITANCE;
102 analog->unit = SR_UNIT_FARAD;
103 if (!is_oor) {
104 if (e[0] == 'm')
105 *analog->data /= 1e+3;
106 else if (e[0] == 'u')
107 *analog->data /= 1e+6;
108 else if (e[0] == 'n')
109 *analog->data /= 1e+9;
110 }
111 } else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
112 analog->mq = SR_MQ_TEMPERATURE;
113 if (u[4] == 'C')
114 analog->unit = SR_UNIT_CELSIUS;
115 else
116 analog->unit = SR_UNIT_FAHRENHEIT;
117 } else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
118 analog->mq = SR_MQ_CURRENT;
119 analog->unit = SR_UNIT_AMPERE;
120 /* This catches "A AC", "A DC" and "A AC+DC". */
121 if (strstr(u, "AC"))
122 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
123 if (strstr(u, "DC"))
124 analog->mqflags |= SR_MQFLAG_DC;
125 if (!is_oor) {
126 if (e[0] == 'm')
127 *analog->data /= 1e+3;
128 else if (e[0] == 'u')
129 *analog->data /= 1e+6;
130 }
131 } else if ((u = strstr(e, "Hz"))) {
132 analog->mq = SR_MQ_FREQUENCY;
133 analog->unit = SR_UNIT_HERTZ;
134 if (e[0] == 'k')
135 *analog->data *= 1e+3;
136 } else if (!strcmp(e, "%")) {
137 analog->mq = SR_MQ_DUTY_CYCLE;
138 analog->unit = SR_UNIT_PERCENTAGE;
139 } else if ((u = strstr(e, "ms"))) {
140 analog->mq = SR_MQ_PULSE_WIDTH;
141 analog->unit = SR_UNIT_SECOND;
142 *analog->data /= 1e+3;
143 }
144
145 if (analog->mq == -1) {
146 /* Not a valid measurement. */
147 g_free(analog->data);
148 g_free(analog);
149 analog = NULL;
150 }
151
152 return analog;
153}
154
4cea0ff7 155static struct sr_datafeed_analog *handle_qm_28x(const struct sr_dev_inst *sdi,
d38d2ef0
BV		 156 char **tokens)
157{
158 struct sr_datafeed_analog *analog;
159 float fvalue;
160 char *eptr;
161
162 (void)sdi;
64d33dc2 163
4cea0ff7
BV		 164 if (!tokens[1])
165 return NULL;
166
d38d2ef0
BV		 167 fvalue = strtof(tokens[0], &eptr);
168 if (fvalue == 0.0 && eptr == tokens[0]) {
31d84da3 169 sr_err("Invalid float.");
d38d2ef0
BV		 170 return NULL;
171 }
172
69e19dd7
BV		 173 if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
174 return NULL;
175 if (!(analog->data = g_try_malloc(sizeof(float))))
176 return NULL;
177 analog->probes = sdi->probes;
d38d2ef0 178 analog->num_samples = 1;
d38d2ef0
BV		 179 *analog->data = fvalue;
180 analog->mq = -1;
181
182 if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) {
183 analog->mq = SR_MQ_VOLTAGE;
184 analog->unit = SR_UNIT_VOLT;
185 if (!strcmp(tokens[2], "NORMAL")) {
186 if (tokens[1][1] == 'A') {
187 analog->mqflags |= SR_MQFLAG_AC;
188 analog->mqflags |= SR_MQFLAG_RMS;
189 } else
190 analog->mqflags |= SR_MQFLAG_DC;
191 } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
192 *analog->data = NAN;
193 } else
194 analog->mq = -1;
a28dac0a 195 } else if (!strcmp(tokens[1], "dBV") || !strcmp(tokens[1], "dBm")) {
2c04dede
BV		 196 analog->mq = SR_MQ_VOLTAGE;
197 if (tokens[1][2] == 'm')
198 analog->unit = SR_UNIT_DECIBEL_MW;
199 else
200 analog->unit = SR_UNIT_DECIBEL_VOLT;
201 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
a28dac0a 202 } else if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) {
d38d2ef0
BV		 203 if (!strcmp(tokens[2], "NORMAL")) {
204 analog->mq = SR_MQ_TEMPERATURE;
205 if (tokens[1][0] == 'C')
fe31f8b9 206 analog->unit = SR_UNIT_CELSIUS;
d38d2ef0
BV		 207 else
208 analog->unit = SR_UNIT_FAHRENHEIT;
209 }
a28dac0a 210 } else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0
BV		 211 if (!strcmp(tokens[3], "NONE")) {
212 analog->mq = SR_MQ_RESISTANCE;
213 analog->unit = SR_UNIT_OHM;
214 if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
215 *analog->data = INFINITY;
216 } else if (strcmp(tokens[2], "NORMAL"))
217 analog->mq = -1;
218 } else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
219 analog->mq = SR_MQ_CONTINUITY;
220 analog->unit = SR_UNIT_BOOLEAN;
221 *analog->data = 0.0;
222 } else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
223 analog->mq = SR_MQ_CONTINUITY;
224 analog->unit = SR_UNIT_BOOLEAN;
225 *analog->data = 1.0;
226 }
a28dac0a 227 } else if (!strcmp(tokens[1], "F")
d38d2ef0
BV		 228 && !strcmp(tokens[2], "NORMAL")
229 && !strcmp(tokens[3], "NONE")) {
230 analog->mq = SR_MQ_CAPACITANCE;
231 analog->unit = SR_UNIT_FARAD;
232 } else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) {
233 analog->mq = SR_MQ_CURRENT;
234 analog->unit = SR_UNIT_AMPERE;
d38d2ef0
BV		 235 if (!strcmp(tokens[2], "NORMAL")) {
236 if (tokens[1][1] == 'A') {
237 analog->mqflags |= SR_MQFLAG_AC;
238 analog->mqflags |= SR_MQFLAG_RMS;
239 } else
240 analog->mqflags |= SR_MQFLAG_DC;
241 } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
242 *analog->data = NAN;
243 } else
244 analog->mq = -1;
245 } if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
246 analog->mq = SR_MQ_FREQUENCY;
247 analog->unit = SR_UNIT_HERTZ;
a28dac0a 248 } else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV		 249 analog->mq = SR_MQ_DUTY_CYCLE;
250 analog->unit = SR_UNIT_PERCENTAGE;
a28dac0a 251 } else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV		 252 analog->mq = SR_MQ_PULSE_WIDTH;
253 analog->unit = SR_UNIT_SECOND;
a28dac0a 254 } else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV		 255 analog->mq = SR_MQ_CONDUCTANCE;
256 analog->unit = SR_UNIT_SIEMENS;
257 }
258
d38d2ef0
BV		 259 if (analog->mq == -1) {
260 /* Not a valid measurement. */
261 g_free(analog->data);
262 g_free(analog);
263 analog = NULL;
264 }
265
266 return analog;
267}
268
11fb7110
BV		 269static void handle_qm_19x_meta(const struct sr_dev_inst *sdi, char **tokens)
270{
271 struct dev_context *devc;
272 int meas_type, meas_unit, meas_char, i;
273
274 /* Make sure we have 7 valid tokens. */
275 for (i = 0; tokens[i] && i < 7; i++);
276 if (i != 7)
277 return;
278
279 if (strcmp(tokens[1], "1"))
280 /* Invalid measurement. */
281 return;
282
283 if (strcmp(tokens[2], "3"))
284 /* Only interested in input from the meter mode source. */
285 return;
286
287 devc = sdi->priv;
288
289 /* Measurement type 11 == absolute, 19 = relative */
290 meas_type = strtol(tokens[0], NULL, 10);
291 if (meas_type != 11 && meas_type != 19)
292 /* Device is in some mode we don't support. */
293 return;
294
295 /* We might get metadata for absolute and relative mode (if the device
296 * is in relative mode). In that case, relative takes precedence. */
297 if (meas_type == 11 && devc->meas_type == 19)
298 return;
299
300 meas_unit = strtol(tokens[3], NULL, 10);
301 if (meas_unit == 0)
302 /* Device is turned off. Really. */
303 return;
304 meas_char = strtol(tokens[4], NULL, 10);
305
306 devc->mq = devc->unit = -1;
307 devc->mqflags = 0;
308 switch (meas_unit) {
309 case 1:
310 devc->mq = SR_MQ_VOLTAGE;
311 devc->unit = SR_UNIT_VOLT;
312 if (meas_char == 1)
313 devc->mqflags |= SR_MQFLAG_DC;
314 else if (meas_char == 2)
315 devc->mqflags |= SR_MQFLAG_AC;
316 else if (meas_char == 3)
317 devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
318 else if (meas_char == 15)
319 devc->mqflags |= SR_MQFLAG_DIODE;
320 break;
321 case 2:
322 devc->mq = SR_MQ_CURRENT;
323 devc->unit = SR_UNIT_AMPERE;
324 if (meas_char == 1)
325 devc->mqflags |= SR_MQFLAG_DC;
326 else if (meas_char == 2)
327 devc->mqflags |= SR_MQFLAG_AC;
328 else if (meas_char == 3)
329 devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
330 break;
331 case 3:
332 if (meas_char == 1) {
333 devc->mq = SR_MQ_RESISTANCE;
334 devc->unit = SR_UNIT_OHM;
335 } else if (meas_char == 16) {
336 devc->mq = SR_MQ_CONTINUITY;
337 devc->unit = SR_UNIT_BOOLEAN;
338 }
339 break;
340 case 12:
341 devc->mq = SR_MQ_TEMPERATURE;
342 devc->unit = SR_UNIT_CELSIUS;
343 break;
344 case 13:
345 devc->mq = SR_MQ_TEMPERATURE;
346 devc->unit = SR_UNIT_FAHRENHEIT;
347 break;
348 default:
349 sr_dbg("unknown unit: %d", meas_unit);
350 }
351 if (devc->mq == -1 && devc->unit == -1)
352 return;
353
354 /* If we got here, we know how to interpret the measurement. */
355 devc->meas_type = meas_type;
356 if (meas_type == 11)
357 /* Absolute meter reading. */
358 devc->is_relative = FALSE;
359 else if (!strcmp(tokens[0], "19"))
360 /* Relative meter reading. */
361 devc->is_relative = TRUE;
362
363}
364
365static void handle_qm_19x_data(const struct sr_dev_inst *sdi, char **tokens)
366{
367 struct dev_context *devc;
368 struct sr_datafeed_packet packet;
369 struct sr_datafeed_analog analog;
370 float fvalue;
371 char *eptr;
372
373 if (!strcmp(tokens[0], "9.9E+37")) {
374 /* An invalid measurement shows up on the display as "OL", but
375 * comes through like this. Since comparing 38-digit floats
376 * is rather problematic, we'll cut through this here. */
377 fvalue = NAN;
378 } else {
379 fvalue = strtof(tokens[0], &eptr);
380 if (fvalue == 0.0 && eptr == tokens[0]) {
381 sr_err("Invalid float '%s'.", tokens[0]);
382 return;
383 }
384 }
385
386 devc = sdi->priv;
387 if (devc->mq == -1 || devc->unit == -1)
388 /* Don't have valid metadata yet. */
389 return;
390
391
392 if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
393 fvalue = INFINITY;
394 else if (devc->mq == SR_MQ_CONTINUITY) {
395 if (isnan(fvalue))
396 fvalue = 0.0;
397 else
398 fvalue = 1.0;
399 }
400
69e19dd7 401 analog.probes = sdi->probes;
11fb7110
BV		 402 analog.num_samples = 1;
403 analog.data = &fvalue;
404 analog.mq = devc->mq;
405 analog.unit = devc->unit;
406 analog.mqflags = 0;
407 packet.type = SR_DF_ANALOG;
408 packet.payload = &analog;
409 sr_session_send(devc->cb_data, &packet);
410 devc->num_samples++;
411
412}
413
d38d2ef0
BV		 414static void handle_line(const struct sr_dev_inst *sdi)
415{
416 struct dev_context *devc;
417 struct sr_datafeed_packet packet;
418 struct sr_datafeed_analog *analog;
11fb7110
BV		 419 int num_tokens, n, i;
420 char cmd[16], **tokens;
d38d2ef0
BV		 421
422 devc = sdi->priv;
31d84da3 423 sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0
BV		 424
425 if (devc->buflen == 1) {
426 if (devc->buf[0] != '0') {
427 /* Not just a CMD_ACK from the query command. */
31d84da3 428 sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0
BV		 429 devc->expect_response = FALSE;
430 }
431 devc->buflen = 0;
432 return;
433 }
434
435 analog = NULL;
436 tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7 437 if (tokens[0]) {
fe31f8b9
BV		 438 if (devc->profile->model == FLUKE_187) {
439 devc->expect_response = FALSE;
4cea0ff7 440 analog = handle_qm_18x(sdi, tokens);
fe31f8b9 441 } else if (devc->profile->model == FLUKE_287) {
d38d2ef0 442 devc->expect_response = FALSE;
4cea0ff7 443 analog = handle_qm_28x(sdi, tokens);
11fb7110
BV		 444 } else if (devc->profile->model == FLUKE_190) {
445 devc->expect_response = FALSE;
446 for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
447 if (num_tokens >= 7) {
448 /* Response to QM: this is a comma-separated list of
449 * fields with metadata about the measurement. This
450 * format can return multiple sets of metadata,
451 * split into sets of 7 tokens each. */
452 devc->meas_type = 0;
453 for (i = 0; i < num_tokens; i += 7)
454 handle_qm_19x_meta(sdi, tokens + i);
455 if (devc->meas_type) {
456 /* Slip the request in now, before the main
457 * timer loop asks for metadata again. */
458 n = sprintf(cmd, "QM %d\r", devc->meas_type);
459 if (serial_write(devc->serial, cmd, n) == -1)
460 sr_err("Unable to send QM (measurement): %s.",
461 strerror(errno));
462 }
463 } else {
464 /* Response to QM <n> measurement request. */
465 handle_qm_19x_data(sdi, tokens);
466 }
d38d2ef0 467 }
d38d2ef0
BV		 468 }
469 g_strfreev(tokens);
470 devc->buflen = 0;
471
472 if (analog) {
473 /* Got a measurement. */
d38d2ef0
BV		 474 packet.type = SR_DF_ANALOG;
475 packet.payload = analog;
476 sr_session_send(devc->cb_data, &packet);
477 devc->num_samples++;
478 g_free(analog->data);
479 g_free(analog);
480 }
481
482}
483
484SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
485{
642e9d62 486 struct sr_dev_inst *sdi;
d38d2ef0
BV		 487 struct dev_context *devc;
488 int len;
489 int64_t now, elapsed;
490
58d03f03
BV		 491 (void)fd;
492
d38d2ef0
BV		 493 if (!(sdi = cb_data))
494 return TRUE;
495
496 if (!(devc = sdi->priv))
497 return TRUE;
498
499 if (revents == G_IO_IN) {
500 /* Serial data arrived. */
501 while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
58d03f03 502 len = serial_read(devc->serial, devc->buf + devc->buflen, 1);
d38d2ef0
BV		 503 if (len < 1)
504 break;
505 devc->buflen++;
506 *(devc->buf + devc->buflen) = '\0';
507 if (*(devc->buf + devc->buflen - 1) == '\r') {
508 *(devc->buf + --devc->buflen) = '\0';
509 handle_line(sdi);
510 break;
511 }
512 }
513 }
514
2f1e5c7c 515 if (devc->limit_samples && devc->num_samples >= devc->limit_samples) {
d38d2ef0
BV		 516 sdi->driver->dev_acquisition_stop(sdi, cb_data);
517 return TRUE;
518 }
519
520 now = g_get_monotonic_time() / 1000;
521 elapsed = now - devc->cmd_sent_at;
522 /* Send query command at poll_period interval, or after 1 second
d4b11de0
BV		 523 * has elapsed. This will make it easier to recover from any
524 * out-of-sync or temporary disconnect issues. */
d38d2ef0 525 if ((devc->expect_response == FALSE && elapsed > devc->profile->poll_period)
d4b11de0 526 || elapsed > devc->profile->timeout) {
58d03f03 527 if (serial_write(devc->serial, "QM\r", 3) == -1)
31d84da3 528 sr_err("Unable to send QM: %s.", strerror(errno));
d38d2ef0
BV		 529 devc->cmd_sent_at = now;
530 devc->expect_response = TRUE;
531 }
532
533 return TRUE;
534}
535
536
Hardware access and backend lib