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d38d2ef0 1/*
50985c20 2 * This file is part of the libsigrok project.
d38d2ef0
BV
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
4cea0ff7 38 if (strcmp(tokens[0], "QM") || !tokens[1])
fe31f8b9
BV
39 return NULL;
40
41 if ((e = strstr(tokens[1], "Out of range"))) {
42 is_oor = TRUE;
43 fvalue = -1;
44 } else {
45 is_oor = FALSE;
46 fvalue = strtof(tokens[1], &e);
47 if (fvalue == 0.0 && e == tokens[1]) {
48 /* Happens all the time, when switching modes. */
31d84da3 49 sr_dbg("Invalid float.");
fe31f8b9
BV
50 return NULL;
51 }
52 }
53 while(*e && *e == ' ')
54 e++;
55
69e19dd7
BV
56 if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
57 return NULL;
58 if (!(analog->data = g_try_malloc(sizeof(float))))
59 return NULL;
60 analog->probes = sdi->probes;
fe31f8b9 61 analog->num_samples = 1;
fe31f8b9
BV
62 if (is_oor)
63 *analog->data = NAN;
64 else
65 *analog->data = fvalue;
66 analog->mq = -1;
67
68 if ((u = strstr(e, "V DC")) || (u = strstr(e, "V AC"))) {
69 analog->mq = SR_MQ_VOLTAGE;
70 analog->unit = SR_UNIT_VOLT;
71 if (!is_oor && e[0] == 'm')
72 *analog->data /= 1000;
73 /* This catches "V AC", "V DC" and "V AC+DC". */
74 if (strstr(u, "AC"))
75 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
76 if (strstr(u, "DC"))
77 analog->mqflags |= SR_MQFLAG_DC;
78 } else if ((u = strstr(e, "dBV")) || (u = strstr(e, "dBm"))) {
79 analog->mq = SR_MQ_VOLTAGE;
80 if (u[2] == 'm')
81 analog->unit = SR_UNIT_DECIBEL_MW;
82 else
83 analog->unit = SR_UNIT_DECIBEL_VOLT;
84 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
85 } else if ((u = strstr(e, "Ohms"))) {
86 analog->mq = SR_MQ_RESISTANCE;
87 analog->unit = SR_UNIT_OHM;
88 if (is_oor)
89 *analog->data = INFINITY;
90 else if (e[0] == 'k')
91 *analog->data *= 1000;
92 else if (e[0] == 'M')
93 *analog->data *= 1000000;
94 } else if (!strcmp(e, "nS")) {
95 analog->mq = SR_MQ_CONDUCTANCE;
96 analog->unit = SR_UNIT_SIEMENS;
97 *analog->data /= 1e+9;
98 } else if ((u = strstr(e, "Farads"))) {
99 analog->mq = SR_MQ_CAPACITANCE;
100 analog->unit = SR_UNIT_FARAD;
101 if (!is_oor) {
102 if (e[0] == 'm')
103 *analog->data /= 1e+3;
104 else if (e[0] == 'u')
105 *analog->data /= 1e+6;
106 else if (e[0] == 'n')
107 *analog->data /= 1e+9;
108 }
109 } else if ((u = strstr(e, "Deg C")) || (u = strstr(e, "Deg F"))) {
110 analog->mq = SR_MQ_TEMPERATURE;
111 if (u[4] == 'C')
112 analog->unit = SR_UNIT_CELSIUS;
113 else
114 analog->unit = SR_UNIT_FAHRENHEIT;
115 } else if ((u = strstr(e, "A AC")) || (u = strstr(e, "A DC"))) {
116 analog->mq = SR_MQ_CURRENT;
117 analog->unit = SR_UNIT_AMPERE;
118 /* This catches "A AC", "A DC" and "A AC+DC". */
119 if (strstr(u, "AC"))
120 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
121 if (strstr(u, "DC"))
122 analog->mqflags |= SR_MQFLAG_DC;
123 if (!is_oor) {
124 if (e[0] == 'm')
125 *analog->data /= 1e+3;
126 else if (e[0] == 'u')
127 *analog->data /= 1e+6;
128 }
129 } else if ((u = strstr(e, "Hz"))) {
130 analog->mq = SR_MQ_FREQUENCY;
131 analog->unit = SR_UNIT_HERTZ;
132 if (e[0] == 'k')
133 *analog->data *= 1e+3;
134 } else if (!strcmp(e, "%")) {
135 analog->mq = SR_MQ_DUTY_CYCLE;
136 analog->unit = SR_UNIT_PERCENTAGE;
137 } else if ((u = strstr(e, "ms"))) {
138 analog->mq = SR_MQ_PULSE_WIDTH;
139 analog->unit = SR_UNIT_SECOND;
140 *analog->data /= 1e+3;
141 }
142
143 if (analog->mq == -1) {
144 /* Not a valid measurement. */
145 g_free(analog->data);
146 g_free(analog);
147 analog = NULL;
148 }
149
150 return analog;
151}
152
4cea0ff7 153static struct sr_datafeed_analog *handle_qm_28x(const struct sr_dev_inst *sdi,
d38d2ef0
BV
154 char **tokens)
155{
156 struct sr_datafeed_analog *analog;
157 float fvalue;
158 char *eptr;
159
4cea0ff7
BV
160 if (!tokens[1])
161 return NULL;
162
d38d2ef0
BV
163 fvalue = strtof(tokens[0], &eptr);
164 if (fvalue == 0.0 && eptr == tokens[0]) {
31d84da3 165 sr_err("Invalid float.");
d38d2ef0
BV
166 return NULL;
167 }
168
69e19dd7
BV
169 if (!(analog = g_try_malloc0(sizeof(struct sr_datafeed_analog))))
170 return NULL;
171 if (!(analog->data = g_try_malloc(sizeof(float))))
172 return NULL;
173 analog->probes = sdi->probes;
d38d2ef0 174 analog->num_samples = 1;
d38d2ef0
BV
175 *analog->data = fvalue;
176 analog->mq = -1;
177
178 if (!strcmp(tokens[1], "VAC") || !strcmp(tokens[1], "VDC")) {
179 analog->mq = SR_MQ_VOLTAGE;
180 analog->unit = SR_UNIT_VOLT;
181 if (!strcmp(tokens[2], "NORMAL")) {
182 if (tokens[1][1] == 'A') {
183 analog->mqflags |= SR_MQFLAG_AC;
184 analog->mqflags |= SR_MQFLAG_RMS;
185 } else
186 analog->mqflags |= SR_MQFLAG_DC;
187 } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
188 *analog->data = NAN;
189 } else
190 analog->mq = -1;
a28dac0a 191 } else if (!strcmp(tokens[1], "dBV") || !strcmp(tokens[1], "dBm")) {
2c04dede
BV
192 analog->mq = SR_MQ_VOLTAGE;
193 if (tokens[1][2] == 'm')
194 analog->unit = SR_UNIT_DECIBEL_MW;
195 else
196 analog->unit = SR_UNIT_DECIBEL_VOLT;
197 analog->mqflags |= SR_MQFLAG_AC | SR_MQFLAG_RMS;
a28dac0a 198 } else if (!strcmp(tokens[1], "CEL") || !strcmp(tokens[1], "FAR")) {
d38d2ef0
BV
199 if (!strcmp(tokens[2], "NORMAL")) {
200 analog->mq = SR_MQ_TEMPERATURE;
201 if (tokens[1][0] == 'C')
fe31f8b9 202 analog->unit = SR_UNIT_CELSIUS;
d38d2ef0
BV
203 else
204 analog->unit = SR_UNIT_FAHRENHEIT;
205 }
a28dac0a 206 } else if (!strcmp(tokens[1], "OHM")) {
d38d2ef0
BV
207 if (!strcmp(tokens[3], "NONE")) {
208 analog->mq = SR_MQ_RESISTANCE;
209 analog->unit = SR_UNIT_OHM;
210 if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
211 *analog->data = INFINITY;
212 } else if (strcmp(tokens[2], "NORMAL"))
213 analog->mq = -1;
214 } else if (!strcmp(tokens[3], "OPEN_CIRCUIT")) {
215 analog->mq = SR_MQ_CONTINUITY;
216 analog->unit = SR_UNIT_BOOLEAN;
217 *analog->data = 0.0;
218 } else if (!strcmp(tokens[3], "SHORT_CIRCUIT")) {
219 analog->mq = SR_MQ_CONTINUITY;
220 analog->unit = SR_UNIT_BOOLEAN;
221 *analog->data = 1.0;
222 }
a28dac0a 223 } else if (!strcmp(tokens[1], "F")
d38d2ef0
BV
224 && !strcmp(tokens[2], "NORMAL")
225 && !strcmp(tokens[3], "NONE")) {
226 analog->mq = SR_MQ_CAPACITANCE;
227 analog->unit = SR_UNIT_FARAD;
228 } else if (!strcmp(tokens[1], "AAC") || !strcmp(tokens[1], "ADC")) {
229 analog->mq = SR_MQ_CURRENT;
230 analog->unit = SR_UNIT_AMPERE;
d38d2ef0
BV
231 if (!strcmp(tokens[2], "NORMAL")) {
232 if (tokens[1][1] == 'A') {
233 analog->mqflags |= SR_MQFLAG_AC;
234 analog->mqflags |= SR_MQFLAG_RMS;
235 } else
236 analog->mqflags |= SR_MQFLAG_DC;
237 } else if (!strcmp(tokens[2], "OL") || !strcmp(tokens[2], "OL_MINUS")) {
238 *analog->data = NAN;
239 } else
240 analog->mq = -1;
241 } if (!strcmp(tokens[1], "Hz") && !strcmp(tokens[2], "NORMAL")) {
242 analog->mq = SR_MQ_FREQUENCY;
243 analog->unit = SR_UNIT_HERTZ;
a28dac0a 244 } else if (!strcmp(tokens[1], "PCT") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV
245 analog->mq = SR_MQ_DUTY_CYCLE;
246 analog->unit = SR_UNIT_PERCENTAGE;
a28dac0a 247 } else if (!strcmp(tokens[1], "S") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV
248 analog->mq = SR_MQ_PULSE_WIDTH;
249 analog->unit = SR_UNIT_SECOND;
a28dac0a 250 } else if (!strcmp(tokens[1], "SIE") && !strcmp(tokens[2], "NORMAL")) {
d38d2ef0
BV
251 analog->mq = SR_MQ_CONDUCTANCE;
252 analog->unit = SR_UNIT_SIEMENS;
253 }
254
d38d2ef0
BV
255 if (analog->mq == -1) {
256 /* Not a valid measurement. */
257 g_free(analog->data);
258 g_free(analog);
259 analog = NULL;
260 }
261
262 return analog;
263}
264
11fb7110
BV
265static void handle_qm_19x_meta(const struct sr_dev_inst *sdi, char **tokens)
266{
267 struct dev_context *devc;
268 int meas_type, meas_unit, meas_char, i;
269
270 /* Make sure we have 7 valid tokens. */
271 for (i = 0; tokens[i] && i < 7; i++);
272 if (i != 7)
273 return;
274
275 if (strcmp(tokens[1], "1"))
276 /* Invalid measurement. */
277 return;
278
279 if (strcmp(tokens[2], "3"))
280 /* Only interested in input from the meter mode source. */
281 return;
282
283 devc = sdi->priv;
284
285 /* Measurement type 11 == absolute, 19 = relative */
286 meas_type = strtol(tokens[0], NULL, 10);
287 if (meas_type != 11 && meas_type != 19)
288 /* Device is in some mode we don't support. */
289 return;
290
291 /* We might get metadata for absolute and relative mode (if the device
292 * is in relative mode). In that case, relative takes precedence. */
293 if (meas_type == 11 && devc->meas_type == 19)
294 return;
295
296 meas_unit = strtol(tokens[3], NULL, 10);
297 if (meas_unit == 0)
298 /* Device is turned off. Really. */
299 return;
300 meas_char = strtol(tokens[4], NULL, 10);
301
302 devc->mq = devc->unit = -1;
303 devc->mqflags = 0;
304 switch (meas_unit) {
305 case 1:
306 devc->mq = SR_MQ_VOLTAGE;
307 devc->unit = SR_UNIT_VOLT;
308 if (meas_char == 1)
309 devc->mqflags |= SR_MQFLAG_DC;
310 else if (meas_char == 2)
311 devc->mqflags |= SR_MQFLAG_AC;
312 else if (meas_char == 3)
313 devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
314 else if (meas_char == 15)
315 devc->mqflags |= SR_MQFLAG_DIODE;
316 break;
317 case 2:
318 devc->mq = SR_MQ_CURRENT;
319 devc->unit = SR_UNIT_AMPERE;
320 if (meas_char == 1)
321 devc->mqflags |= SR_MQFLAG_DC;
322 else if (meas_char == 2)
323 devc->mqflags |= SR_MQFLAG_AC;
324 else if (meas_char == 3)
325 devc->mqflags |= SR_MQFLAG_DC | SR_MQFLAG_AC;
326 break;
327 case 3:
328 if (meas_char == 1) {
329 devc->mq = SR_MQ_RESISTANCE;
330 devc->unit = SR_UNIT_OHM;
331 } else if (meas_char == 16) {
332 devc->mq = SR_MQ_CONTINUITY;
333 devc->unit = SR_UNIT_BOOLEAN;
334 }
335 break;
336 case 12:
337 devc->mq = SR_MQ_TEMPERATURE;
338 devc->unit = SR_UNIT_CELSIUS;
339 break;
340 case 13:
341 devc->mq = SR_MQ_TEMPERATURE;
342 devc->unit = SR_UNIT_FAHRENHEIT;
343 break;
344 default:
345 sr_dbg("unknown unit: %d", meas_unit);
346 }
347 if (devc->mq == -1 && devc->unit == -1)
348 return;
349
350 /* If we got here, we know how to interpret the measurement. */
351 devc->meas_type = meas_type;
352 if (meas_type == 11)
353 /* Absolute meter reading. */
354 devc->is_relative = FALSE;
355 else if (!strcmp(tokens[0], "19"))
356 /* Relative meter reading. */
357 devc->is_relative = TRUE;
358
359}
360
361static void handle_qm_19x_data(const struct sr_dev_inst *sdi, char **tokens)
362{
363 struct dev_context *devc;
364 struct sr_datafeed_packet packet;
365 struct sr_datafeed_analog analog;
366 float fvalue;
367 char *eptr;
368
369 if (!strcmp(tokens[0], "9.9E+37")) {
370 /* An invalid measurement shows up on the display as "OL", but
371 * comes through like this. Since comparing 38-digit floats
372 * is rather problematic, we'll cut through this here. */
373 fvalue = NAN;
374 } else {
375 fvalue = strtof(tokens[0], &eptr);
376 if (fvalue == 0.0 && eptr == tokens[0]) {
377 sr_err("Invalid float '%s'.", tokens[0]);
378 return;
379 }
380 }
381
382 devc = sdi->priv;
383 if (devc->mq == -1 || devc->unit == -1)
384 /* Don't have valid metadata yet. */
385 return;
386
387
388 if (devc->mq == SR_MQ_RESISTANCE && isnan(fvalue))
389 fvalue = INFINITY;
390 else if (devc->mq == SR_MQ_CONTINUITY) {
391 if (isnan(fvalue))
392 fvalue = 0.0;
393 else
394 fvalue = 1.0;
395 }
396
69e19dd7 397 analog.probes = sdi->probes;
11fb7110
BV
398 analog.num_samples = 1;
399 analog.data = &fvalue;
400 analog.mq = devc->mq;
401 analog.unit = devc->unit;
402 analog.mqflags = 0;
403 packet.type = SR_DF_ANALOG;
404 packet.payload = &analog;
405 sr_session_send(devc->cb_data, &packet);
406 devc->num_samples++;
407
408}
409
d38d2ef0
BV
410static void handle_line(const struct sr_dev_inst *sdi)
411{
412 struct dev_context *devc;
919681f0 413 struct sr_serial_dev_inst *serial;
d38d2ef0
BV
414 struct sr_datafeed_packet packet;
415 struct sr_datafeed_analog *analog;
11fb7110
BV
416 int num_tokens, n, i;
417 char cmd[16], **tokens;
d38d2ef0
BV
418
419 devc = sdi->priv;
919681f0 420 serial = sdi->conn;
31d84da3 421 sr_spew("Received line '%s' (%d).", devc->buf, devc->buflen);
d38d2ef0
BV
422
423 if (devc->buflen == 1) {
424 if (devc->buf[0] != '0') {
425 /* Not just a CMD_ACK from the query command. */
31d84da3 426 sr_dbg("Got CMD_ACK '%c'.", devc->buf[0]);
d38d2ef0
BV
427 devc->expect_response = FALSE;
428 }
429 devc->buflen = 0;
430 return;
431 }
432
433 analog = NULL;
434 tokens = g_strsplit(devc->buf, ",", 0);
4cea0ff7 435 if (tokens[0]) {
fe31f8b9
BV
436 if (devc->profile->model == FLUKE_187) {
437 devc->expect_response = FALSE;
4cea0ff7 438 analog = handle_qm_18x(sdi, tokens);
fe31f8b9 439 } else if (devc->profile->model == FLUKE_287) {
d38d2ef0 440 devc->expect_response = FALSE;
4cea0ff7 441 analog = handle_qm_28x(sdi, tokens);
11fb7110
BV
442 } else if (devc->profile->model == FLUKE_190) {
443 devc->expect_response = FALSE;
444 for (num_tokens = 0; tokens[num_tokens]; num_tokens++);
445 if (num_tokens >= 7) {
446 /* Response to QM: this is a comma-separated list of
447 * fields with metadata about the measurement. This
448 * format can return multiple sets of metadata,
449 * split into sets of 7 tokens each. */
450 devc->meas_type = 0;
451 for (i = 0; i < num_tokens; i += 7)
452 handle_qm_19x_meta(sdi, tokens + i);
453 if (devc->meas_type) {
454 /* Slip the request in now, before the main
455 * timer loop asks for metadata again. */
456 n = sprintf(cmd, "QM %d\r", devc->meas_type);
919681f0 457 if (serial_write(serial, cmd, n) == -1)
11fb7110
BV
458 sr_err("Unable to send QM (measurement): %s.",
459 strerror(errno));
460 }
461 } else {
462 /* Response to QM <n> measurement request. */
463 handle_qm_19x_data(sdi, tokens);
464 }
d38d2ef0 465 }
d38d2ef0
BV
466 }
467 g_strfreev(tokens);
468 devc->buflen = 0;
469
470 if (analog) {
471 /* Got a measurement. */
d38d2ef0
BV
472 packet.type = SR_DF_ANALOG;
473 packet.payload = analog;
474 sr_session_send(devc->cb_data, &packet);
475 devc->num_samples++;
476 g_free(analog->data);
477 g_free(analog);
478 }
479
480}
481
482SR_PRIV int fluke_receive_data(int fd, int revents, void *cb_data)
483{
642e9d62 484 struct sr_dev_inst *sdi;
d38d2ef0 485 struct dev_context *devc;
919681f0 486 struct sr_serial_dev_inst *serial;
d38d2ef0
BV
487 int len;
488 int64_t now, elapsed;
489
58d03f03
BV
490 (void)fd;
491
d38d2ef0
BV
492 if (!(sdi = cb_data))
493 return TRUE;
494
495 if (!(devc = sdi->priv))
496 return TRUE;
497
919681f0 498 serial = sdi->conn;
d38d2ef0
BV
499 if (revents == G_IO_IN) {
500 /* Serial data arrived. */
501 while(FLUKEDMM_BUFSIZE - devc->buflen - 1 > 0) {
919681f0 502 len = serial_read(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) {
919681f0 527 if (serial_write(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