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6bcb3ee8 JH |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2014 Janne Huttunen <jahuttun@gmail.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 | ||
20 | #include <stdint.h> | |
21 | #include <string.h> | |
22 | #include <math.h> | |
23 | #include <glib.h> | |
24 | #include "libsigrok.h" | |
25 | #include "libsigrok-internal.h" | |
26 | ||
27 | #define LOG_PREFIX "es51919" | |
28 | ||
29 | struct dev_buffer { | |
30 | /** Total size of the buffer. */ | |
31 | size_t size; | |
32 | /** Amount of data currently in the buffer. */ | |
33 | size_t len; | |
34 | /** Offset where the data starts in the buffer. */ | |
35 | size_t offset; | |
36 | /** Space for the data. */ | |
37 | uint8_t data[]; | |
38 | }; | |
39 | ||
40 | static struct dev_buffer *dev_buffer_new(size_t size) | |
41 | { | |
42 | struct dev_buffer *dbuf; | |
43 | ||
91219afc | 44 | dbuf = g_malloc0(sizeof(struct dev_buffer) + size); |
6bcb3ee8 JH |
45 | dbuf->size = size; |
46 | dbuf->len = 0; | |
47 | dbuf->offset = 0; | |
48 | ||
49 | return dbuf; | |
50 | } | |
51 | ||
52 | static void dev_buffer_destroy(struct dev_buffer *dbuf) | |
53 | { | |
54 | g_free(dbuf); | |
55 | } | |
56 | ||
57 | static int dev_buffer_fill_serial(struct dev_buffer *dbuf, | |
58 | struct sr_dev_inst *sdi) | |
59 | { | |
60 | struct sr_serial_dev_inst *serial; | |
61 | int len; | |
62 | ||
63 | serial = sdi->conn; | |
64 | ||
65 | /* If we already have data, move it to the beginning of the buffer. */ | |
66 | if (dbuf->len > 0 && dbuf->offset > 0) | |
67 | memmove(dbuf->data, dbuf->data + dbuf->offset, dbuf->len); | |
68 | ||
69 | dbuf->offset = 0; | |
70 | ||
71 | len = dbuf->size - dbuf->len; | |
72 | len = serial_read_nonblocking(serial, dbuf->data + dbuf->len, len); | |
73 | if (len < 0) { | |
74 | sr_err("Serial port read error: %d.", len); | |
75 | return len; | |
76 | } | |
77 | ||
78 | dbuf->len += len; | |
79 | ||
80 | return SR_OK; | |
81 | } | |
82 | ||
83 | static uint8_t *dev_buffer_packet_find(struct dev_buffer *dbuf, | |
84 | gboolean (*packet_valid)(const uint8_t *), | |
85 | size_t packet_size) | |
86 | { | |
87 | size_t offset; | |
88 | ||
89 | while (dbuf->len >= packet_size) { | |
90 | if (packet_valid(dbuf->data + dbuf->offset)) { | |
91 | offset = dbuf->offset; | |
92 | dbuf->offset += packet_size; | |
93 | dbuf->len -= packet_size; | |
94 | return dbuf->data + offset; | |
95 | } | |
96 | dbuf->offset++; | |
97 | dbuf->len--; | |
98 | } | |
99 | ||
100 | return NULL; | |
101 | } | |
102 | ||
787ec9db JH |
103 | struct dev_limit_counter { |
104 | /** The current number of received samples/frames/etc. */ | |
6bcb3ee8 | 105 | uint64_t count; |
787ec9db | 106 | /** The limit (in number of samples/frames/etc.). */ |
6bcb3ee8 JH |
107 | uint64_t limit; |
108 | }; | |
109 | ||
787ec9db | 110 | static void dev_limit_counter_start(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
111 | { |
112 | cnt->count = 0; | |
113 | } | |
114 | ||
787ec9db | 115 | static void dev_limit_counter_inc(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
116 | { |
117 | cnt->count++; | |
118 | } | |
119 | ||
787ec9db JH |
120 | static void dev_limit_counter_limit_set(struct dev_limit_counter *cnt, |
121 | uint64_t limit) | |
6bcb3ee8 JH |
122 | { |
123 | cnt->limit = limit; | |
124 | } | |
125 | ||
787ec9db | 126 | static gboolean dev_limit_counter_limit_reached(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
127 | { |
128 | if (cnt->limit && cnt->count >= cnt->limit) { | |
787ec9db | 129 | sr_info("Requested counter limit reached."); |
6bcb3ee8 JH |
130 | return TRUE; |
131 | } | |
132 | ||
133 | return FALSE; | |
134 | } | |
135 | ||
136 | struct dev_time_counter { | |
137 | /** The starting time of current sampling run. */ | |
138 | int64_t starttime; | |
139 | /** The time limit (in milliseconds). */ | |
140 | uint64_t limit; | |
141 | }; | |
142 | ||
143 | static void dev_time_counter_start(struct dev_time_counter *cnt) | |
144 | { | |
145 | cnt->starttime = g_get_monotonic_time(); | |
146 | } | |
147 | ||
148 | static void dev_time_limit_set(struct dev_time_counter *cnt, uint64_t limit) | |
149 | { | |
150 | cnt->limit = limit; | |
151 | } | |
152 | ||
153 | static gboolean dev_time_limit_reached(struct dev_time_counter *cnt) | |
154 | { | |
155 | int64_t time; | |
156 | ||
157 | if (cnt->limit) { | |
158 | time = (g_get_monotonic_time() - cnt->starttime) / 1000; | |
159 | if (time > (int64_t)cnt->limit) { | |
160 | sr_info("Requested time limit reached."); | |
161 | return TRUE; | |
162 | } | |
163 | } | |
164 | ||
165 | return FALSE; | |
166 | } | |
167 | ||
168 | static void serial_conf_get(GSList *options, const char *def_serialcomm, | |
169 | const char **conn, const char **serialcomm) | |
170 | { | |
171 | struct sr_config *src; | |
172 | GSList *l; | |
173 | ||
174 | *conn = *serialcomm = NULL; | |
175 | for (l = options; l; l = l->next) { | |
176 | src = l->data; | |
177 | switch (src->key) { | |
178 | case SR_CONF_CONN: | |
179 | *conn = g_variant_get_string(src->data, NULL); | |
180 | break; | |
181 | case SR_CONF_SERIALCOMM: | |
182 | *serialcomm = g_variant_get_string(src->data, NULL); | |
183 | break; | |
184 | } | |
185 | } | |
186 | ||
187 | if (*serialcomm == NULL) | |
188 | *serialcomm = def_serialcomm; | |
189 | } | |
190 | ||
191 | static struct sr_serial_dev_inst *serial_dev_new(GSList *options, | |
192 | const char *def_serialcomm) | |
193 | ||
194 | { | |
195 | const char *conn, *serialcomm; | |
196 | ||
197 | serial_conf_get(options, def_serialcomm, &conn, &serialcomm); | |
198 | ||
199 | if (!conn) | |
200 | return NULL; | |
201 | ||
202 | return sr_serial_dev_inst_new(conn, serialcomm); | |
203 | } | |
204 | ||
205 | static int serial_stream_check_buf(struct sr_serial_dev_inst *serial, | |
206 | uint8_t *buf, size_t buflen, | |
207 | size_t packet_size, | |
208 | packet_valid_callback is_valid, | |
209 | uint64_t timeout_ms, int baudrate) | |
210 | { | |
211 | size_t len, dropped; | |
212 | int ret; | |
213 | ||
214 | if ((ret = serial_open(serial, SERIAL_RDWR)) != SR_OK) | |
215 | return ret; | |
216 | ||
217 | serial_flush(serial); | |
218 | ||
219 | len = buflen; | |
220 | ret = serial_stream_detect(serial, buf, &len, packet_size, | |
221 | is_valid, timeout_ms, baudrate); | |
222 | ||
223 | serial_close(serial); | |
224 | ||
225 | if (ret != SR_OK) | |
226 | return ret; | |
227 | ||
228 | /* | |
229 | * If we dropped more than two packets worth of data, something is | |
230 | * wrong. We shouldn't quit however, since the dropped bytes might be | |
231 | * just zeroes at the beginning of the stream. Those can occur as a | |
232 | * combination of the nonstandard cable that ships with some devices | |
233 | * and the serial port or USB to serial adapter. | |
234 | */ | |
235 | dropped = len - packet_size; | |
236 | if (dropped > 2 * packet_size) | |
237 | sr_warn("Had to drop too much data."); | |
238 | ||
239 | return SR_OK; | |
240 | } | |
241 | ||
242 | static int serial_stream_check(struct sr_serial_dev_inst *serial, | |
243 | size_t packet_size, | |
244 | packet_valid_callback is_valid, | |
245 | uint64_t timeout_ms, int baudrate) | |
246 | { | |
247 | uint8_t buf[128]; | |
248 | ||
249 | return serial_stream_check_buf(serial, buf, sizeof(buf), packet_size, | |
250 | is_valid, timeout_ms, baudrate); | |
251 | } | |
252 | ||
253 | struct std_opt_desc { | |
254 | const uint32_t *scanopts; | |
255 | const int num_scanopts; | |
256 | const uint32_t *devopts; | |
257 | const int num_devopts; | |
258 | }; | |
259 | ||
260 | static int std_config_list(uint32_t key, GVariant **data, | |
261 | const struct std_opt_desc *d) | |
262 | { | |
263 | switch (key) { | |
264 | case SR_CONF_SCAN_OPTIONS: | |
265 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
266 | d->scanopts, d->num_scanopts, sizeof(uint32_t)); | |
267 | break; | |
268 | case SR_CONF_DEVICE_OPTIONS: | |
269 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
270 | d->devopts, d->num_devopts, sizeof(uint32_t)); | |
271 | break; | |
272 | default: | |
273 | return SR_ERR_NA; | |
274 | } | |
275 | ||
276 | return SR_OK; | |
277 | } | |
278 | ||
279 | static int send_config_update(struct sr_dev_inst *sdi, struct sr_config *cfg) | |
280 | { | |
281 | struct sr_datafeed_packet packet; | |
282 | struct sr_datafeed_meta meta; | |
283 | ||
284 | memset(&meta, 0, sizeof(meta)); | |
285 | ||
286 | packet.type = SR_DF_META; | |
287 | packet.payload = &meta; | |
288 | ||
289 | meta.config = g_slist_append(meta.config, cfg); | |
290 | ||
291 | return sr_session_send(sdi, &packet); | |
292 | } | |
293 | ||
a42a39ac JH |
294 | static int send_config_update_key(struct sr_dev_inst *sdi, uint32_t key, |
295 | GVariant *var) | |
296 | { | |
297 | struct sr_config *cfg; | |
298 | int ret; | |
299 | ||
300 | cfg = sr_config_new(key, var); | |
301 | if (!cfg) | |
302 | return SR_ERR; | |
303 | ||
304 | ret = send_config_update(sdi, cfg); | |
305 | sr_config_free(cfg); | |
306 | ||
307 | return ret; | |
308 | ||
309 | } | |
310 | ||
6bcb3ee8 JH |
311 | /* |
312 | * Cyrustek ES51919 LCR chipset host protocol. | |
313 | * | |
314 | * Public official documentation does not contain the protocol | |
315 | * description, so this is all based on reverse engineering. | |
316 | * | |
317 | * Packet structure (17 bytes): | |
318 | * | |
319 | * 0x00: header1 ?? (0x00) | |
320 | * 0x01: header2 ?? (0x0d) | |
321 | * | |
322 | * 0x02: flags | |
323 | * bit 0 = hold enabled | |
324 | * bit 1 = reference shown (in delta mode) | |
325 | * bit 2 = delta mode | |
326 | * bit 3 = calibration mode | |
327 | * bit 4 = sorting mode | |
328 | * bit 5 = LCR mode | |
329 | * bit 6 = auto mode | |
330 | * bit 7 = parallel measurement (vs. serial) | |
331 | * | |
332 | * 0x03: config | |
333 | * bit 0-4 = ??? (0x10) | |
334 | * bit 5-7 = test frequency | |
335 | * 0 = 100 Hz | |
336 | * 1 = 120 Hz | |
337 | * 2 = 1 kHz | |
338 | * 3 = 10 kHz | |
339 | * 4 = 100 kHz | |
340 | * 5 = 0 Hz (DC) | |
341 | * | |
342 | * 0x04: tolerance (sorting mode) | |
343 | * 0 = not set | |
344 | * 3 = +-0.25% | |
345 | * 4 = +-0.5% | |
346 | * 5 = +-1% | |
347 | * 6 = +-2% | |
348 | * 7 = +-5% | |
349 | * 8 = +-10% | |
350 | * 9 = +-20% | |
351 | * 10 = -20+80% | |
352 | * | |
353 | * 0x05-0x09: primary measurement | |
354 | * 0x05: measured quantity | |
355 | * 1 = inductance | |
356 | * 2 = capacitance | |
357 | * 3 = resistance | |
358 | * 4 = DC resistance | |
359 | * 0x06: measurement MSB (0x4e20 = 20000 = outside limits) | |
360 | * 0x07: measurement LSB | |
361 | * 0x08: measurement info | |
362 | * bit 0-2 = decimal point multiplier (10^-val) | |
363 | * bit 3-7 = unit | |
364 | * 0 = no unit | |
365 | * 1 = Ohm | |
366 | * 2 = kOhm | |
367 | * 3 = MOhm | |
368 | * 5 = uH | |
369 | * 6 = mH | |
370 | * 7 = H | |
371 | * 8 = kH | |
372 | * 9 = pF | |
373 | * 10 = nF | |
374 | * 11 = uF | |
375 | * 12 = mF | |
376 | * 13 = % | |
377 | * 14 = degree | |
378 | * 0x09: measurement status | |
379 | * bit 0-3 = status | |
380 | * 0 = normal (measurement shown) | |
381 | * 1 = blank (nothing shown) | |
382 | * 2 = lines ("----") | |
99d090d8 | 383 | * 3 = outside limits ("OL") |
6bcb3ee8 JH |
384 | * 7 = pass ("PASS") |
385 | * 8 = fail ("FAIL") | |
386 | * 9 = open ("OPEn") | |
387 | * 10 = shorted ("Srt") | |
388 | * bit 4-6 = ??? (maybe part of same field with 0-3) | |
389 | * bit 7 = ??? (some independent flag) | |
390 | * | |
391 | * 0x0a-0x0e: secondary measurement | |
392 | * 0x0a: measured quantity | |
393 | * 0 = none | |
394 | * 1 = dissipation factor | |
395 | * 2 = quality factor | |
396 | * 3 = parallel AC resistance / ESR | |
397 | * 4 = phase angle | |
398 | * 0x0b-0x0e: like primary measurement | |
399 | * | |
400 | * 0x0f: footer1 (0x0d) ? | |
401 | * 0x10: footer2 (0x0a) ? | |
402 | */ | |
403 | ||
404 | #define PACKET_SIZE 17 | |
405 | ||
406 | static const uint64_t frequencies[] = { | |
407 | 100, 120, 1000, 10000, 100000, 0, | |
408 | }; | |
409 | ||
a42a39ac JH |
410 | enum { QUANT_AUTO = 5, }; |
411 | ||
412 | static const char *const quantities1[] = { | |
413 | "NONE", "INDUCTANCE", "CAPACITANCE", "RESISTANCE", "RESISTANCE", "AUTO", | |
414 | }; | |
415 | ||
416 | static const char *const list_quantities1[] = { | |
417 | "NONE", "INDUCTANCE", "CAPACITANCE", "RESISTANCE", "AUTO", | |
418 | }; | |
419 | ||
420 | static const char *const quantities2[] = { | |
421 | "NONE", "DISSIPATION", "QUALITY", "RESISTANCE", "ANGLE", "AUTO", | |
422 | }; | |
423 | ||
424 | enum { MODEL_NONE, MODEL_PAR, MODEL_SER, MODEL_AUTO, }; | |
425 | ||
426 | static const char *const models[] = { | |
427 | "NONE", "PARALLEL", "SERIES", "AUTO", | |
428 | }; | |
429 | ||
6bcb3ee8 JH |
430 | /** Private, per-device-instance driver context. */ |
431 | struct dev_context { | |
432 | /** Opaque pointer passed in by the frontend. */ | |
433 | void *cb_data; | |
434 | ||
787ec9db JH |
435 | /** The number of frames. */ |
436 | struct dev_limit_counter frame_count; | |
6bcb3ee8 JH |
437 | |
438 | /** The time limit counter. */ | |
439 | struct dev_time_counter time_count; | |
440 | ||
441 | /** Data buffer. */ | |
442 | struct dev_buffer *buf; | |
443 | ||
444 | /** The frequency of the test signal (index to frequencies[]). */ | |
445 | unsigned int freq; | |
a42a39ac JH |
446 | |
447 | /** Measured primary quantity (index to quantities1[]). */ | |
448 | unsigned int quant1; | |
449 | ||
450 | /** Measured secondary quantity (index to quantities2[]). */ | |
451 | unsigned int quant2; | |
452 | ||
453 | /** Equivalent circuit model (index to models[]). */ | |
454 | unsigned int model; | |
6bcb3ee8 JH |
455 | }; |
456 | ||
a42a39ac | 457 | static const uint8_t *pkt_to_buf(const uint8_t *pkt, int is_secondary) |
6bcb3ee8 | 458 | { |
a42a39ac JH |
459 | return is_secondary ? pkt + 10 : pkt + 5; |
460 | } | |
461 | ||
462 | static int parse_mq(const uint8_t *pkt, int is_secondary, int is_parallel) | |
463 | { | |
464 | const uint8_t *buf; | |
465 | ||
466 | buf = pkt_to_buf(pkt, is_secondary); | |
467 | ||
6bcb3ee8 JH |
468 | switch (is_secondary << 8 | buf[0]) { |
469 | case 0x001: | |
c7c8994c JH |
470 | return is_parallel ? |
471 | SR_MQ_PARALLEL_INDUCTANCE : SR_MQ_SERIES_INDUCTANCE; | |
6bcb3ee8 JH |
472 | case 0x002: |
473 | return is_parallel ? | |
c7c8994c | 474 | SR_MQ_PARALLEL_CAPACITANCE : SR_MQ_SERIES_CAPACITANCE; |
6bcb3ee8 JH |
475 | case 0x003: |
476 | case 0x103: | |
477 | return is_parallel ? | |
c7c8994c | 478 | SR_MQ_PARALLEL_RESISTANCE : SR_MQ_SERIES_RESISTANCE; |
6bcb3ee8 JH |
479 | case 0x004: |
480 | return SR_MQ_RESISTANCE; | |
481 | case 0x100: | |
482 | return SR_MQ_DIFFERENCE; | |
483 | case 0x101: | |
484 | return SR_MQ_DISSIPATION_FACTOR; | |
485 | case 0x102: | |
486 | return SR_MQ_QUALITY_FACTOR; | |
487 | case 0x104: | |
488 | return SR_MQ_PHASE_ANGLE; | |
489 | } | |
490 | ||
491 | sr_err("Unknown quantity 0x%03x.", is_secondary << 8 | buf[0]); | |
492 | ||
493 | return -1; | |
494 | } | |
495 | ||
496 | static float parse_value(const uint8_t *buf) | |
497 | { | |
498 | static const float decimals[] = { | |
499 | 1, 1e-1, 1e-2, 1e-3, 1e-4, 1e-5, 1e-6, 1e-7 | |
500 | }; | |
501 | int16_t val; | |
502 | ||
503 | val = (buf[1] << 8) | buf[2]; | |
504 | return (float)val * decimals[buf[3] & 7]; | |
505 | } | |
506 | ||
507 | static void parse_measurement(const uint8_t *pkt, float *floatval, | |
508 | struct sr_datafeed_analog *analog, | |
509 | int is_secondary) | |
510 | { | |
511 | static const struct { | |
512 | int unit; | |
513 | float mult; | |
514 | } units[] = { | |
515 | { SR_UNIT_UNITLESS, 1 }, /* no unit */ | |
516 | { SR_UNIT_OHM, 1 }, /* Ohm */ | |
517 | { SR_UNIT_OHM, 1e3 }, /* kOhm */ | |
518 | { SR_UNIT_OHM, 1e6 }, /* MOhm */ | |
519 | { -1, 0 }, /* ??? */ | |
520 | { SR_UNIT_HENRY, 1e-6 }, /* uH */ | |
521 | { SR_UNIT_HENRY, 1e-3 }, /* mH */ | |
522 | { SR_UNIT_HENRY, 1 }, /* H */ | |
523 | { SR_UNIT_HENRY, 1e3 }, /* kH */ | |
524 | { SR_UNIT_FARAD, 1e-12 }, /* pF */ | |
525 | { SR_UNIT_FARAD, 1e-9 }, /* nF */ | |
526 | { SR_UNIT_FARAD, 1e-6 }, /* uF */ | |
527 | { SR_UNIT_FARAD, 1e-3 }, /* mF */ | |
528 | { SR_UNIT_PERCENTAGE, 1 }, /* % */ | |
529 | { SR_UNIT_DEGREE, 1 } /* degree */ | |
530 | }; | |
531 | const uint8_t *buf; | |
532 | int state; | |
533 | ||
a42a39ac | 534 | buf = pkt_to_buf(pkt, is_secondary); |
6bcb3ee8 JH |
535 | |
536 | analog->mq = -1; | |
537 | analog->mqflags = 0; | |
538 | ||
539 | state = buf[4] & 0xf; | |
540 | ||
541 | if (state != 0 && state != 3) | |
542 | return; | |
543 | ||
544 | if (pkt[2] & 0x18) { | |
545 | /* Calibration and Sorting modes not supported. */ | |
546 | return; | |
547 | } | |
548 | ||
549 | if (!is_secondary) { | |
550 | if (pkt[2] & 0x01) | |
551 | analog->mqflags |= SR_MQFLAG_HOLD; | |
552 | if (pkt[2] & 0x02) | |
553 | analog->mqflags |= SR_MQFLAG_REFERENCE; | |
6bcb3ee8 JH |
554 | } else { |
555 | if (pkt[2] & 0x04) | |
556 | analog->mqflags |= SR_MQFLAG_RELATIVE; | |
557 | } | |
558 | ||
a42a39ac | 559 | if ((analog->mq = parse_mq(pkt, is_secondary, pkt[2] & 0x80)) < 0) |
6bcb3ee8 JH |
560 | return; |
561 | ||
562 | if ((buf[3] >> 3) >= ARRAY_SIZE(units)) { | |
563 | sr_err("Unknown unit %u.", buf[3] >> 3); | |
564 | analog->mq = -1; | |
565 | return; | |
566 | } | |
567 | ||
568 | analog->unit = units[buf[3] >> 3].unit; | |
569 | ||
570 | *floatval = parse_value(buf); | |
571 | *floatval *= (state == 0) ? units[buf[3] >> 3].mult : INFINITY; | |
572 | } | |
573 | ||
a42a39ac | 574 | static unsigned int parse_freq(const uint8_t *pkt) |
6bcb3ee8 JH |
575 | { |
576 | unsigned int freq; | |
577 | ||
578 | freq = pkt[3] >> 5; | |
579 | ||
580 | if (freq >= ARRAY_SIZE(frequencies)) { | |
581 | sr_err("Unknown frequency %u.", freq); | |
582 | freq = ARRAY_SIZE(frequencies) - 1; | |
583 | } | |
584 | ||
585 | return freq; | |
586 | } | |
587 | ||
a42a39ac JH |
588 | static unsigned int parse_quant(const uint8_t *pkt, int is_secondary) |
589 | { | |
590 | const uint8_t *buf; | |
591 | ||
592 | if (pkt[2] & 0x20) | |
593 | return QUANT_AUTO; | |
594 | ||
595 | buf = pkt_to_buf(pkt, is_secondary); | |
596 | ||
597 | return buf[0]; | |
598 | } | |
599 | ||
600 | static unsigned int parse_model(const uint8_t *pkt) | |
601 | { | |
602 | if (pkt[2] & 0x40) | |
603 | return MODEL_AUTO; | |
604 | else if (parse_mq(pkt, 0, 0) == SR_MQ_RESISTANCE) | |
605 | return MODEL_NONE; | |
606 | else if (pkt[2] & 0x80) | |
607 | return MODEL_PAR; | |
608 | else | |
609 | return MODEL_SER; | |
610 | ||
611 | } | |
612 | ||
6bcb3ee8 JH |
613 | static gboolean packet_valid(const uint8_t *pkt) |
614 | { | |
615 | /* | |
616 | * If the first two bytes of the packet are indeed a constant | |
617 | * header, they should be checked too. Since we don't know it | |
618 | * for sure, we'll just check the last two for now since they | |
619 | * seem to be constant just like in the other Cyrustek chipset | |
620 | * protocols. | |
621 | */ | |
622 | if (pkt[15] == 0xd && pkt[16] == 0xa) | |
623 | return TRUE; | |
624 | ||
625 | return FALSE; | |
626 | } | |
627 | ||
a42a39ac JH |
628 | static int do_config_update(struct sr_dev_inst *sdi, uint32_t key, |
629 | GVariant *var) | |
6bcb3ee8 | 630 | { |
6bcb3ee8 | 631 | struct dev_context *devc; |
6bcb3ee8 JH |
632 | |
633 | devc = sdi->priv; | |
634 | ||
a42a39ac JH |
635 | return send_config_update_key(devc->cb_data, key, var); |
636 | } | |
6bcb3ee8 | 637 | |
a42a39ac JH |
638 | static int send_freq_update(struct sr_dev_inst *sdi, unsigned int freq) |
639 | { | |
640 | return do_config_update(sdi, SR_CONF_OUTPUT_FREQUENCY, | |
641 | g_variant_new_uint64(frequencies[freq])); | |
642 | } | |
6bcb3ee8 | 643 | |
a42a39ac JH |
644 | static int send_quant1_update(struct sr_dev_inst *sdi, unsigned int quant) |
645 | { | |
646 | return do_config_update(sdi, SR_CONF_MEASURED_QUANTITY, | |
647 | g_variant_new_string(quantities1[quant])); | |
648 | } | |
6bcb3ee8 | 649 | |
a42a39ac JH |
650 | static int send_quant2_update(struct sr_dev_inst *sdi, unsigned int quant) |
651 | { | |
652 | return do_config_update(sdi, SR_CONF_MEASURED_2ND_QUANTITY, | |
653 | g_variant_new_string(quantities2[quant])); | |
654 | } | |
655 | ||
656 | static int send_model_update(struct sr_dev_inst *sdi, unsigned int model) | |
657 | { | |
658 | return do_config_update(sdi, SR_CONF_EQUIV_CIRCUIT_MODEL, | |
659 | g_variant_new_string(models[model])); | |
6bcb3ee8 JH |
660 | } |
661 | ||
662 | static void handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt) | |
663 | { | |
664 | struct sr_datafeed_packet packet; | |
665 | struct sr_datafeed_analog analog; | |
666 | struct dev_context *devc; | |
a42a39ac | 667 | unsigned int val; |
6bcb3ee8 | 668 | float floatval; |
a6413fa5 | 669 | gboolean frame; |
6bcb3ee8 JH |
670 | |
671 | devc = sdi->priv; | |
672 | ||
a42a39ac JH |
673 | val = parse_freq(pkt); |
674 | if (val != devc->freq) { | |
675 | if (send_freq_update(sdi, val) == SR_OK) | |
676 | devc->freq = val; | |
677 | else | |
678 | return; | |
679 | } | |
680 | ||
681 | val = parse_quant(pkt, 0); | |
682 | if (val != devc->quant1) { | |
683 | if (send_quant1_update(sdi, val) == SR_OK) | |
684 | devc->quant1 = val; | |
685 | else | |
686 | return; | |
687 | } | |
688 | ||
689 | val = parse_quant(pkt, 1); | |
690 | if (val != devc->quant2) { | |
691 | if (send_quant2_update(sdi, val) == SR_OK) | |
692 | devc->quant2 = val; | |
693 | else | |
694 | return; | |
695 | } | |
696 | ||
697 | val = parse_model(pkt); | |
698 | if (val != devc->model) { | |
699 | if (send_model_update(sdi, val) == SR_OK) | |
700 | devc->model = val; | |
6bcb3ee8 JH |
701 | else |
702 | return; | |
703 | } | |
704 | ||
a6413fa5 | 705 | frame = FALSE; |
6bcb3ee8 JH |
706 | |
707 | memset(&analog, 0, sizeof(analog)); | |
708 | ||
709 | analog.num_samples = 1; | |
710 | analog.data = &floatval; | |
711 | ||
6bcb3ee8 JH |
712 | analog.channels = g_slist_append(NULL, sdi->channels->data); |
713 | ||
714 | parse_measurement(pkt, &floatval, &analog, 0); | |
715 | if (analog.mq >= 0) { | |
a6413fa5 JH |
716 | if (!frame) { |
717 | packet.type = SR_DF_FRAME_BEGIN; | |
718 | sr_session_send(devc->cb_data, &packet); | |
719 | frame = TRUE; | |
720 | } | |
721 | ||
722 | packet.type = SR_DF_ANALOG; | |
723 | packet.payload = &analog; | |
724 | ||
725 | sr_session_send(devc->cb_data, &packet); | |
6bcb3ee8 JH |
726 | } |
727 | ||
728 | analog.channels = g_slist_append(NULL, sdi->channels->next->data); | |
729 | ||
730 | parse_measurement(pkt, &floatval, &analog, 1); | |
731 | if (analog.mq >= 0) { | |
a6413fa5 JH |
732 | if (!frame) { |
733 | packet.type = SR_DF_FRAME_BEGIN; | |
734 | sr_session_send(devc->cb_data, &packet); | |
735 | frame = TRUE; | |
736 | } | |
737 | ||
738 | packet.type = SR_DF_ANALOG; | |
739 | packet.payload = &analog; | |
740 | ||
741 | sr_session_send(devc->cb_data, &packet); | |
6bcb3ee8 JH |
742 | } |
743 | ||
a6413fa5 JH |
744 | if (frame) { |
745 | packet.type = SR_DF_FRAME_END; | |
746 | sr_session_send(devc->cb_data, &packet); | |
787ec9db | 747 | dev_limit_counter_inc(&devc->frame_count); |
a6413fa5 | 748 | } |
6bcb3ee8 JH |
749 | } |
750 | ||
751 | static int handle_new_data(struct sr_dev_inst *sdi) | |
752 | { | |
753 | struct dev_context *devc; | |
754 | uint8_t *pkt; | |
755 | int ret; | |
756 | ||
757 | devc = sdi->priv; | |
758 | ||
759 | ret = dev_buffer_fill_serial(devc->buf, sdi); | |
760 | if (ret < 0) | |
761 | return ret; | |
762 | ||
763 | while ((pkt = dev_buffer_packet_find(devc->buf, packet_valid, | |
764 | PACKET_SIZE))) | |
765 | handle_packet(sdi, pkt); | |
766 | ||
767 | return SR_OK; | |
768 | } | |
769 | ||
770 | static int receive_data(int fd, int revents, void *cb_data) | |
771 | { | |
772 | struct sr_dev_inst *sdi; | |
773 | struct dev_context *devc; | |
774 | ||
775 | (void)fd; | |
776 | ||
777 | if (!(sdi = cb_data)) | |
778 | return TRUE; | |
779 | ||
780 | if (!(devc = sdi->priv)) | |
781 | return TRUE; | |
782 | ||
783 | if (revents == G_IO_IN) { | |
784 | /* Serial data arrived. */ | |
785 | handle_new_data(sdi); | |
786 | } | |
787 | ||
787ec9db | 788 | if (dev_limit_counter_limit_reached(&devc->frame_count) || |
6bcb3ee8 JH |
789 | dev_time_limit_reached(&devc->time_count)) |
790 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
791 | ||
792 | return TRUE; | |
793 | } | |
794 | ||
bb983c66 | 795 | static int add_channel(struct sr_dev_inst *sdi, int idx, const char *name) |
6bcb3ee8 JH |
796 | { |
797 | struct sr_channel *ch; | |
798 | ||
bb983c66 | 799 | ch = sr_channel_new(idx, SR_CHANNEL_ANALOG, TRUE, name); |
6bcb3ee8 JH |
800 | sdi->channels = g_slist_append(sdi->channels, ch); |
801 | ||
802 | return SR_OK; | |
803 | } | |
804 | ||
805 | static const char *const channel_names[] = { "P1", "P2" }; | |
806 | ||
807 | static int setup_channels(struct sr_dev_inst *sdi) | |
808 | { | |
809 | unsigned int i; | |
810 | int ret; | |
811 | ||
812 | ret = SR_ERR_BUG; | |
813 | ||
814 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) { | |
bb983c66 | 815 | ret = add_channel(sdi, i, channel_names[i]); |
6bcb3ee8 JH |
816 | if (ret != SR_OK) |
817 | break; | |
818 | } | |
819 | ||
820 | return ret; | |
821 | } | |
822 | ||
823 | SR_PRIV void es51919_serial_clean(void *priv) | |
824 | { | |
825 | struct dev_context *devc; | |
826 | ||
827 | if (!(devc = priv)) | |
828 | return; | |
829 | ||
830 | dev_buffer_destroy(devc->buf); | |
831 | g_free(devc); | |
832 | } | |
833 | ||
834 | SR_PRIV struct sr_dev_inst *es51919_serial_scan(GSList *options, | |
835 | const char *vendor, | |
836 | const char *model) | |
837 | { | |
838 | struct sr_serial_dev_inst *serial; | |
839 | struct sr_dev_inst *sdi; | |
840 | struct dev_context *devc; | |
841 | int ret; | |
842 | ||
843 | serial = NULL; | |
844 | sdi = NULL; | |
845 | devc = NULL; | |
846 | ||
847 | if (!(serial = serial_dev_new(options, "9600/8n1/rts=1/dtr=1"))) | |
848 | goto scan_cleanup; | |
849 | ||
850 | ret = serial_stream_check(serial, PACKET_SIZE, packet_valid, | |
851 | 3000, 9600); | |
852 | if (ret != SR_OK) | |
853 | goto scan_cleanup; | |
854 | ||
855 | sr_info("Found device on port %s.", serial->port); | |
856 | ||
aac29cc1 | 857 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
858 | sdi->status = SR_ST_INACTIVE; |
859 | sdi->vendor = g_strdup(vendor); | |
860 | sdi->model = g_strdup(model); | |
f57d8ffe | 861 | devc = g_malloc0(sizeof(struct dev_context)); |
91219afc | 862 | devc->buf = dev_buffer_new(PACKET_SIZE * 8); |
6bcb3ee8 JH |
863 | sdi->inst_type = SR_INST_SERIAL; |
864 | sdi->conn = serial; | |
6bcb3ee8 JH |
865 | sdi->priv = devc; |
866 | ||
867 | if (setup_channels(sdi) != SR_OK) | |
868 | goto scan_cleanup; | |
869 | ||
870 | return sdi; | |
871 | ||
872 | scan_cleanup: | |
873 | es51919_serial_clean(devc); | |
874 | if (sdi) | |
875 | sr_dev_inst_free(sdi); | |
876 | if (serial) | |
877 | sr_serial_dev_inst_free(serial); | |
878 | ||
879 | return NULL; | |
880 | } | |
881 | ||
882 | SR_PRIV int es51919_serial_config_get(uint32_t key, GVariant **data, | |
883 | const struct sr_dev_inst *sdi, | |
884 | const struct sr_channel_group *cg) | |
885 | { | |
886 | struct dev_context *devc; | |
887 | ||
888 | (void)cg; | |
889 | ||
890 | if (!(devc = sdi->priv)) | |
891 | return SR_ERR_BUG; | |
892 | ||
893 | switch (key) { | |
894 | case SR_CONF_OUTPUT_FREQUENCY: | |
895 | *data = g_variant_new_uint64(frequencies[devc->freq]); | |
896 | break; | |
a42a39ac JH |
897 | case SR_CONF_MEASURED_QUANTITY: |
898 | *data = g_variant_new_string(quantities1[devc->quant1]); | |
899 | break; | |
900 | case SR_CONF_MEASURED_2ND_QUANTITY: | |
901 | *data = g_variant_new_string(quantities2[devc->quant2]); | |
902 | break; | |
903 | case SR_CONF_EQUIV_CIRCUIT_MODEL: | |
904 | *data = g_variant_new_string(models[devc->model]); | |
905 | break; | |
6bcb3ee8 JH |
906 | default: |
907 | sr_spew("%s: Unsupported key %u", __func__, key); | |
908 | return SR_ERR_NA; | |
909 | } | |
910 | ||
911 | return SR_OK; | |
912 | } | |
913 | ||
914 | SR_PRIV int es51919_serial_config_set(uint32_t key, GVariant *data, | |
915 | const struct sr_dev_inst *sdi, | |
916 | const struct sr_channel_group *cg) | |
917 | { | |
918 | struct dev_context *devc; | |
919 | uint64_t val; | |
920 | ||
921 | (void)cg; | |
922 | ||
923 | if (!(devc = sdi->priv)) | |
924 | return SR_ERR_BUG; | |
925 | ||
926 | switch (key) { | |
927 | case SR_CONF_LIMIT_MSEC: | |
928 | val = g_variant_get_uint64(data); | |
929 | dev_time_limit_set(&devc->time_count, val); | |
930 | sr_dbg("Setting time limit to %" PRIu64 ".", val); | |
931 | break; | |
787ec9db | 932 | case SR_CONF_LIMIT_FRAMES: |
6bcb3ee8 | 933 | val = g_variant_get_uint64(data); |
787ec9db JH |
934 | dev_limit_counter_limit_set(&devc->frame_count, val); |
935 | sr_dbg("Setting frame limit to %" PRIu64 ".", val); | |
6bcb3ee8 JH |
936 | break; |
937 | default: | |
938 | sr_spew("%s: Unsupported key %u", __func__, key); | |
939 | return SR_ERR_NA; | |
940 | } | |
941 | ||
942 | return SR_OK; | |
943 | } | |
944 | ||
945 | static const uint32_t scanopts[] = { | |
946 | SR_CONF_CONN, | |
947 | SR_CONF_SERIALCOMM, | |
948 | }; | |
949 | ||
950 | static const uint32_t devopts[] = { | |
b9a348f5 | 951 | SR_CONF_LCRMETER, |
6bcb3ee8 | 952 | SR_CONF_CONTINUOUS, |
787ec9db | 953 | SR_CONF_LIMIT_FRAMES | SR_CONF_SET, |
6bcb3ee8 JH |
954 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, |
955 | SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_LIST, | |
a42a39ac JH |
956 | SR_CONF_MEASURED_QUANTITY | SR_CONF_GET | SR_CONF_LIST, |
957 | SR_CONF_MEASURED_2ND_QUANTITY | SR_CONF_GET | SR_CONF_LIST, | |
958 | SR_CONF_EQUIV_CIRCUIT_MODEL | SR_CONF_GET | SR_CONF_LIST, | |
6bcb3ee8 JH |
959 | }; |
960 | ||
961 | static const struct std_opt_desc opts = { | |
962 | scanopts, ARRAY_SIZE(scanopts), | |
963 | devopts, ARRAY_SIZE(devopts), | |
964 | }; | |
965 | ||
966 | SR_PRIV int es51919_serial_config_list(uint32_t key, GVariant **data, | |
967 | const struct sr_dev_inst *sdi, | |
968 | const struct sr_channel_group *cg) | |
969 | { | |
970 | (void)sdi; | |
971 | (void)cg; | |
972 | ||
973 | if (std_config_list(key, data, &opts) == SR_OK) | |
974 | return SR_OK; | |
975 | ||
976 | switch (key) { | |
977 | case SR_CONF_OUTPUT_FREQUENCY: | |
978 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT64, | |
979 | frequencies, ARRAY_SIZE(frequencies), sizeof(uint64_t)); | |
980 | break; | |
a42a39ac JH |
981 | case SR_CONF_MEASURED_QUANTITY: |
982 | *data = g_variant_new_strv(list_quantities1, | |
983 | ARRAY_SIZE(list_quantities1)); | |
984 | break; | |
985 | case SR_CONF_MEASURED_2ND_QUANTITY: | |
986 | *data = g_variant_new_strv(quantities2, | |
987 | ARRAY_SIZE(quantities2)); | |
988 | break; | |
989 | case SR_CONF_EQUIV_CIRCUIT_MODEL: | |
990 | *data = g_variant_new_strv(models, ARRAY_SIZE(models)); | |
991 | break; | |
6bcb3ee8 JH |
992 | default: |
993 | sr_spew("%s: Unsupported key %u", __func__, key); | |
994 | return SR_ERR_NA; | |
995 | } | |
996 | ||
997 | return SR_OK; | |
998 | } | |
999 | ||
1000 | SR_PRIV int es51919_serial_acquisition_start(const struct sr_dev_inst *sdi, | |
1001 | void *cb_data) | |
1002 | { | |
1003 | struct dev_context *devc; | |
1004 | struct sr_serial_dev_inst *serial; | |
1005 | ||
1006 | if (sdi->status != SR_ST_ACTIVE) | |
1007 | return SR_ERR_DEV_CLOSED; | |
1008 | ||
1009 | if (!(devc = sdi->priv)) | |
1010 | return SR_ERR_BUG; | |
1011 | ||
1012 | devc->cb_data = cb_data; | |
1013 | ||
787ec9db | 1014 | dev_limit_counter_start(&devc->frame_count); |
6bcb3ee8 JH |
1015 | dev_time_counter_start(&devc->time_count); |
1016 | ||
1017 | /* Send header packet to the session bus. */ | |
1018 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
1019 | ||
1020 | /* Poll every 50ms, or whenever some data comes in. */ | |
1021 | serial = sdi->conn; | |
1022 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
1023 | receive_data, (void *)sdi); | |
1024 | ||
1025 | return SR_OK; | |
1026 | } | |
1027 | ||
1028 | SR_PRIV int es51919_serial_acquisition_stop(struct sr_dev_inst *sdi, | |
1029 | void *cb_data) | |
1030 | { | |
1031 | return std_serial_dev_acquisition_stop(sdi, cb_data, | |
1032 | std_serial_dev_close, sdi->conn, LOG_PREFIX); | |
1033 | } |