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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 | ||
6ec6c43b | 20 | #include <config.h> |
6bcb3ee8 JH |
21 | #include <stdint.h> |
22 | #include <string.h> | |
23 | #include <math.h> | |
24 | #include <glib.h> | |
c1aae900 | 25 | #include <libsigrok/libsigrok.h> |
6bcb3ee8 JH |
26 | #include "libsigrok-internal.h" |
27 | ||
28 | #define LOG_PREFIX "es51919" | |
29 | ||
30 | struct dev_buffer { | |
31 | /** Total size of the buffer. */ | |
32 | size_t size; | |
33 | /** Amount of data currently in the buffer. */ | |
34 | size_t len; | |
35 | /** Offset where the data starts in the buffer. */ | |
36 | size_t offset; | |
37 | /** Space for the data. */ | |
38 | uint8_t data[]; | |
39 | }; | |
40 | ||
41 | static struct dev_buffer *dev_buffer_new(size_t size) | |
42 | { | |
43 | struct dev_buffer *dbuf; | |
44 | ||
91219afc | 45 | dbuf = g_malloc0(sizeof(struct dev_buffer) + size); |
6bcb3ee8 JH |
46 | dbuf->size = size; |
47 | dbuf->len = 0; | |
48 | dbuf->offset = 0; | |
49 | ||
50 | return dbuf; | |
51 | } | |
52 | ||
53 | static void dev_buffer_destroy(struct dev_buffer *dbuf) | |
54 | { | |
55 | g_free(dbuf); | |
56 | } | |
57 | ||
58 | static int dev_buffer_fill_serial(struct dev_buffer *dbuf, | |
59 | struct sr_dev_inst *sdi) | |
60 | { | |
61 | struct sr_serial_dev_inst *serial; | |
62 | int len; | |
63 | ||
64 | serial = sdi->conn; | |
65 | ||
66 | /* If we already have data, move it to the beginning of the buffer. */ | |
67 | if (dbuf->len > 0 && dbuf->offset > 0) | |
68 | memmove(dbuf->data, dbuf->data + dbuf->offset, dbuf->len); | |
69 | ||
70 | dbuf->offset = 0; | |
71 | ||
72 | len = dbuf->size - dbuf->len; | |
73 | len = serial_read_nonblocking(serial, dbuf->data + dbuf->len, len); | |
74 | if (len < 0) { | |
75 | sr_err("Serial port read error: %d.", len); | |
76 | return len; | |
77 | } | |
78 | ||
79 | dbuf->len += len; | |
80 | ||
81 | return SR_OK; | |
82 | } | |
83 | ||
84 | static uint8_t *dev_buffer_packet_find(struct dev_buffer *dbuf, | |
85 | gboolean (*packet_valid)(const uint8_t *), | |
86 | size_t packet_size) | |
87 | { | |
88 | size_t offset; | |
89 | ||
90 | while (dbuf->len >= packet_size) { | |
91 | if (packet_valid(dbuf->data + dbuf->offset)) { | |
92 | offset = dbuf->offset; | |
93 | dbuf->offset += packet_size; | |
94 | dbuf->len -= packet_size; | |
95 | return dbuf->data + offset; | |
96 | } | |
97 | dbuf->offset++; | |
98 | dbuf->len--; | |
99 | } | |
100 | ||
101 | return NULL; | |
102 | } | |
103 | ||
787ec9db JH |
104 | struct dev_limit_counter { |
105 | /** The current number of received samples/frames/etc. */ | |
6bcb3ee8 | 106 | uint64_t count; |
787ec9db | 107 | /** The limit (in number of samples/frames/etc.). */ |
6bcb3ee8 JH |
108 | uint64_t limit; |
109 | }; | |
110 | ||
787ec9db | 111 | static void dev_limit_counter_start(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
112 | { |
113 | cnt->count = 0; | |
114 | } | |
115 | ||
787ec9db | 116 | static void dev_limit_counter_inc(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
117 | { |
118 | cnt->count++; | |
119 | } | |
120 | ||
787ec9db JH |
121 | static void dev_limit_counter_limit_set(struct dev_limit_counter *cnt, |
122 | uint64_t limit) | |
6bcb3ee8 JH |
123 | { |
124 | cnt->limit = limit; | |
125 | } | |
126 | ||
787ec9db | 127 | static gboolean dev_limit_counter_limit_reached(struct dev_limit_counter *cnt) |
6bcb3ee8 JH |
128 | { |
129 | if (cnt->limit && cnt->count >= cnt->limit) { | |
787ec9db | 130 | sr_info("Requested counter limit reached."); |
6bcb3ee8 JH |
131 | return TRUE; |
132 | } | |
133 | ||
134 | return FALSE; | |
135 | } | |
136 | ||
137 | struct dev_time_counter { | |
138 | /** The starting time of current sampling run. */ | |
139 | int64_t starttime; | |
140 | /** The time limit (in milliseconds). */ | |
141 | uint64_t limit; | |
142 | }; | |
143 | ||
144 | static void dev_time_counter_start(struct dev_time_counter *cnt) | |
145 | { | |
146 | cnt->starttime = g_get_monotonic_time(); | |
147 | } | |
148 | ||
149 | static void dev_time_limit_set(struct dev_time_counter *cnt, uint64_t limit) | |
150 | { | |
151 | cnt->limit = limit; | |
152 | } | |
153 | ||
154 | static gboolean dev_time_limit_reached(struct dev_time_counter *cnt) | |
155 | { | |
156 | int64_t time; | |
157 | ||
158 | if (cnt->limit) { | |
159 | time = (g_get_monotonic_time() - cnt->starttime) / 1000; | |
160 | if (time > (int64_t)cnt->limit) { | |
161 | sr_info("Requested time limit reached."); | |
162 | return TRUE; | |
163 | } | |
164 | } | |
165 | ||
166 | return FALSE; | |
167 | } | |
168 | ||
169 | static void serial_conf_get(GSList *options, const char *def_serialcomm, | |
170 | const char **conn, const char **serialcomm) | |
171 | { | |
172 | struct sr_config *src; | |
173 | GSList *l; | |
174 | ||
175 | *conn = *serialcomm = NULL; | |
176 | for (l = options; l; l = l->next) { | |
177 | src = l->data; | |
178 | switch (src->key) { | |
179 | case SR_CONF_CONN: | |
180 | *conn = g_variant_get_string(src->data, NULL); | |
181 | break; | |
182 | case SR_CONF_SERIALCOMM: | |
183 | *serialcomm = g_variant_get_string(src->data, NULL); | |
184 | break; | |
185 | } | |
186 | } | |
187 | ||
188 | if (*serialcomm == NULL) | |
189 | *serialcomm = def_serialcomm; | |
190 | } | |
191 | ||
192 | static struct sr_serial_dev_inst *serial_dev_new(GSList *options, | |
193 | const char *def_serialcomm) | |
194 | ||
195 | { | |
196 | const char *conn, *serialcomm; | |
197 | ||
198 | serial_conf_get(options, def_serialcomm, &conn, &serialcomm); | |
199 | ||
200 | if (!conn) | |
201 | return NULL; | |
202 | ||
203 | return sr_serial_dev_inst_new(conn, serialcomm); | |
204 | } | |
205 | ||
206 | static int serial_stream_check_buf(struct sr_serial_dev_inst *serial, | |
207 | uint8_t *buf, size_t buflen, | |
208 | size_t packet_size, | |
209 | packet_valid_callback is_valid, | |
210 | uint64_t timeout_ms, int baudrate) | |
211 | { | |
212 | size_t len, dropped; | |
213 | int ret; | |
214 | ||
215 | if ((ret = serial_open(serial, SERIAL_RDWR)) != SR_OK) | |
216 | return ret; | |
217 | ||
218 | serial_flush(serial); | |
219 | ||
220 | len = buflen; | |
221 | ret = serial_stream_detect(serial, buf, &len, packet_size, | |
222 | is_valid, timeout_ms, baudrate); | |
223 | ||
224 | serial_close(serial); | |
225 | ||
226 | if (ret != SR_OK) | |
227 | return ret; | |
228 | ||
229 | /* | |
230 | * If we dropped more than two packets worth of data, something is | |
231 | * wrong. We shouldn't quit however, since the dropped bytes might be | |
232 | * just zeroes at the beginning of the stream. Those can occur as a | |
233 | * combination of the nonstandard cable that ships with some devices | |
234 | * and the serial port or USB to serial adapter. | |
235 | */ | |
236 | dropped = len - packet_size; | |
237 | if (dropped > 2 * packet_size) | |
238 | sr_warn("Had to drop too much data."); | |
239 | ||
240 | return SR_OK; | |
241 | } | |
242 | ||
243 | static int serial_stream_check(struct sr_serial_dev_inst *serial, | |
244 | size_t packet_size, | |
245 | packet_valid_callback is_valid, | |
246 | uint64_t timeout_ms, int baudrate) | |
247 | { | |
248 | uint8_t buf[128]; | |
249 | ||
250 | return serial_stream_check_buf(serial, buf, sizeof(buf), packet_size, | |
251 | is_valid, timeout_ms, baudrate); | |
252 | } | |
253 | ||
254 | struct std_opt_desc { | |
255 | const uint32_t *scanopts; | |
256 | const int num_scanopts; | |
257 | const uint32_t *devopts; | |
258 | const int num_devopts; | |
259 | }; | |
260 | ||
261 | static int std_config_list(uint32_t key, GVariant **data, | |
262 | const struct std_opt_desc *d) | |
263 | { | |
264 | switch (key) { | |
265 | case SR_CONF_SCAN_OPTIONS: | |
266 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
267 | d->scanopts, d->num_scanopts, sizeof(uint32_t)); | |
268 | break; | |
269 | case SR_CONF_DEVICE_OPTIONS: | |
270 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_UINT32, | |
271 | d->devopts, d->num_devopts, sizeof(uint32_t)); | |
272 | break; | |
273 | default: | |
274 | return SR_ERR_NA; | |
275 | } | |
276 | ||
277 | return SR_OK; | |
278 | } | |
279 | ||
280 | static int send_config_update(struct sr_dev_inst *sdi, struct sr_config *cfg) | |
281 | { | |
282 | struct sr_datafeed_packet packet; | |
283 | struct sr_datafeed_meta meta; | |
284 | ||
285 | memset(&meta, 0, sizeof(meta)); | |
286 | ||
287 | packet.type = SR_DF_META; | |
288 | packet.payload = &meta; | |
289 | ||
290 | meta.config = g_slist_append(meta.config, cfg); | |
291 | ||
292 | return sr_session_send(sdi, &packet); | |
293 | } | |
294 | ||
a42a39ac JH |
295 | static int send_config_update_key(struct sr_dev_inst *sdi, uint32_t key, |
296 | GVariant *var) | |
297 | { | |
298 | struct sr_config *cfg; | |
299 | int ret; | |
300 | ||
301 | cfg = sr_config_new(key, var); | |
302 | if (!cfg) | |
303 | return SR_ERR; | |
304 | ||
305 | ret = send_config_update(sdi, cfg); | |
306 | sr_config_free(cfg); | |
307 | ||
308 | return ret; | |
a42a39ac JH |
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 | ||
b94dd07b | 406 | static const double frequencies[] = { |
6bcb3ee8 JH |
407 | 100, 120, 1000, 10000, 100000, 0, |
408 | }; | |
409 | ||
a42a39ac JH |
410 | enum { MODEL_NONE, MODEL_PAR, MODEL_SER, MODEL_AUTO, }; |
411 | ||
412 | static const char *const models[] = { | |
413 | "NONE", "PARALLEL", "SERIES", "AUTO", | |
414 | }; | |
415 | ||
6bcb3ee8 JH |
416 | /** Private, per-device-instance driver context. */ |
417 | struct dev_context { | |
787ec9db JH |
418 | /** The number of frames. */ |
419 | struct dev_limit_counter frame_count; | |
6bcb3ee8 JH |
420 | |
421 | /** The time limit counter. */ | |
422 | struct dev_time_counter time_count; | |
423 | ||
424 | /** Data buffer. */ | |
425 | struct dev_buffer *buf; | |
426 | ||
427 | /** The frequency of the test signal (index to frequencies[]). */ | |
428 | unsigned int freq; | |
a42a39ac | 429 | |
a42a39ac JH |
430 | /** Equivalent circuit model (index to models[]). */ |
431 | unsigned int model; | |
6bcb3ee8 JH |
432 | }; |
433 | ||
a42a39ac | 434 | static const uint8_t *pkt_to_buf(const uint8_t *pkt, int is_secondary) |
6bcb3ee8 | 435 | { |
a42a39ac JH |
436 | return is_secondary ? pkt + 10 : pkt + 5; |
437 | } | |
438 | ||
439 | static int parse_mq(const uint8_t *pkt, int is_secondary, int is_parallel) | |
440 | { | |
441 | const uint8_t *buf; | |
442 | ||
443 | buf = pkt_to_buf(pkt, is_secondary); | |
444 | ||
6bcb3ee8 JH |
445 | switch (is_secondary << 8 | buf[0]) { |
446 | case 0x001: | |
1beccaed | 447 | return is_parallel ? |
c7c8994c | 448 | SR_MQ_PARALLEL_INDUCTANCE : SR_MQ_SERIES_INDUCTANCE; |
6bcb3ee8 JH |
449 | case 0x002: |
450 | return is_parallel ? | |
c7c8994c | 451 | SR_MQ_PARALLEL_CAPACITANCE : SR_MQ_SERIES_CAPACITANCE; |
6bcb3ee8 JH |
452 | case 0x003: |
453 | case 0x103: | |
454 | return is_parallel ? | |
c7c8994c | 455 | SR_MQ_PARALLEL_RESISTANCE : SR_MQ_SERIES_RESISTANCE; |
6bcb3ee8 JH |
456 | case 0x004: |
457 | return SR_MQ_RESISTANCE; | |
458 | case 0x100: | |
459 | return SR_MQ_DIFFERENCE; | |
460 | case 0x101: | |
461 | return SR_MQ_DISSIPATION_FACTOR; | |
462 | case 0x102: | |
463 | return SR_MQ_QUALITY_FACTOR; | |
464 | case 0x104: | |
465 | return SR_MQ_PHASE_ANGLE; | |
466 | } | |
467 | ||
468 | sr_err("Unknown quantity 0x%03x.", is_secondary << 8 | buf[0]); | |
469 | ||
7ffcf587 | 470 | return 0; |
6bcb3ee8 JH |
471 | } |
472 | ||
24b6882f | 473 | static float parse_value(const uint8_t *buf, int *digits) |
6bcb3ee8 | 474 | { |
24b6882f AJ |
475 | static const int exponents[] = {0, -1, -2, -3, -4, -5, -6, -7}; |
476 | int exponent; | |
6bcb3ee8 JH |
477 | int16_t val; |
478 | ||
24b6882f AJ |
479 | exponent = exponents[buf[3] & 7]; |
480 | *digits = -exponent; | |
6bcb3ee8 | 481 | val = (buf[1] << 8) | buf[2]; |
24b6882f | 482 | return (float)val * powf(10, exponent); |
6bcb3ee8 JH |
483 | } |
484 | ||
485 | static void parse_measurement(const uint8_t *pkt, float *floatval, | |
7ffcf587 | 486 | struct sr_datafeed_analog *analog, |
6bcb3ee8 JH |
487 | int is_secondary) |
488 | { | |
489 | static const struct { | |
490 | int unit; | |
24b6882f | 491 | int exponent; |
6bcb3ee8 | 492 | } units[] = { |
d9251a2c UH |
493 | { SR_UNIT_UNITLESS, 0 }, /* no unit */ |
494 | { SR_UNIT_OHM, 0 }, /* Ohm */ | |
495 | { SR_UNIT_OHM, 3 }, /* kOhm */ | |
496 | { SR_UNIT_OHM, 6 }, /* MOhm */ | |
497 | { -1, 0 }, /* ??? */ | |
498 | { SR_UNIT_HENRY, -6 }, /* uH */ | |
499 | { SR_UNIT_HENRY, -3 }, /* mH */ | |
500 | { SR_UNIT_HENRY, 0 }, /* H */ | |
501 | { SR_UNIT_HENRY, 3 }, /* kH */ | |
502 | { SR_UNIT_FARAD, -12 }, /* pF */ | |
503 | { SR_UNIT_FARAD, -9 }, /* nF */ | |
504 | { SR_UNIT_FARAD, -6 }, /* uF */ | |
505 | { SR_UNIT_FARAD, -3 }, /* mF */ | |
506 | { SR_UNIT_PERCENTAGE, 0 }, /* % */ | |
507 | { SR_UNIT_DEGREE, 0 }, /* degree */ | |
6bcb3ee8 JH |
508 | }; |
509 | const uint8_t *buf; | |
24b6882f | 510 | int digits, exponent; |
6bcb3ee8 JH |
511 | int state; |
512 | ||
a42a39ac | 513 | buf = pkt_to_buf(pkt, is_secondary); |
6bcb3ee8 | 514 | |
7ffcf587 UH |
515 | analog->meaning->mq = 0; |
516 | analog->meaning->mqflags = 0; | |
6bcb3ee8 JH |
517 | |
518 | state = buf[4] & 0xf; | |
519 | ||
520 | if (state != 0 && state != 3) | |
521 | return; | |
522 | ||
523 | if (pkt[2] & 0x18) { | |
524 | /* Calibration and Sorting modes not supported. */ | |
525 | return; | |
526 | } | |
527 | ||
528 | if (!is_secondary) { | |
529 | if (pkt[2] & 0x01) | |
7ffcf587 | 530 | analog->meaning->mqflags |= SR_MQFLAG_HOLD; |
6bcb3ee8 | 531 | if (pkt[2] & 0x02) |
7ffcf587 | 532 | analog->meaning->mqflags |= SR_MQFLAG_REFERENCE; |
6bcb3ee8 JH |
533 | } else { |
534 | if (pkt[2] & 0x04) | |
7ffcf587 | 535 | analog->meaning->mqflags |= SR_MQFLAG_RELATIVE; |
6bcb3ee8 JH |
536 | } |
537 | ||
693c5248 | 538 | if ((analog->meaning->mq = parse_mq(pkt, is_secondary, pkt[2] & 0x80)) == 0) |
6bcb3ee8 JH |
539 | return; |
540 | ||
541 | if ((buf[3] >> 3) >= ARRAY_SIZE(units)) { | |
542 | sr_err("Unknown unit %u.", buf[3] >> 3); | |
7ffcf587 | 543 | analog->meaning->mq = 0; |
6bcb3ee8 JH |
544 | return; |
545 | } | |
546 | ||
7ffcf587 | 547 | analog->meaning->unit = units[buf[3] >> 3].unit; |
6bcb3ee8 | 548 | |
24b6882f AJ |
549 | exponent = units[buf[3] >> 3].exponent; |
550 | *floatval = parse_value(buf, &digits); | |
551 | *floatval *= (state == 0) ? powf(10, exponent) : INFINITY; | |
552 | analog->encoding->digits = digits - exponent; | |
553 | analog->spec->spec_digits = digits - exponent; | |
6bcb3ee8 JH |
554 | } |
555 | ||
a42a39ac | 556 | static unsigned int parse_freq(const uint8_t *pkt) |
6bcb3ee8 JH |
557 | { |
558 | unsigned int freq; | |
559 | ||
560 | freq = pkt[3] >> 5; | |
561 | ||
562 | if (freq >= ARRAY_SIZE(frequencies)) { | |
563 | sr_err("Unknown frequency %u.", freq); | |
564 | freq = ARRAY_SIZE(frequencies) - 1; | |
565 | } | |
566 | ||
567 | return freq; | |
568 | } | |
569 | ||
a42a39ac JH |
570 | static unsigned int parse_model(const uint8_t *pkt) |
571 | { | |
572 | if (pkt[2] & 0x40) | |
573 | return MODEL_AUTO; | |
574 | else if (parse_mq(pkt, 0, 0) == SR_MQ_RESISTANCE) | |
575 | return MODEL_NONE; | |
576 | else if (pkt[2] & 0x80) | |
577 | return MODEL_PAR; | |
578 | else | |
579 | return MODEL_SER; | |
a42a39ac JH |
580 | } |
581 | ||
6bcb3ee8 JH |
582 | static gboolean packet_valid(const uint8_t *pkt) |
583 | { | |
584 | /* | |
585 | * If the first two bytes of the packet are indeed a constant | |
586 | * header, they should be checked too. Since we don't know it | |
587 | * for sure, we'll just check the last two for now since they | |
588 | * seem to be constant just like in the other Cyrustek chipset | |
589 | * protocols. | |
590 | */ | |
591 | if (pkt[15] == 0xd && pkt[16] == 0xa) | |
592 | return TRUE; | |
593 | ||
594 | return FALSE; | |
595 | } | |
596 | ||
a42a39ac JH |
597 | static int do_config_update(struct sr_dev_inst *sdi, uint32_t key, |
598 | GVariant *var) | |
6bcb3ee8 | 599 | { |
695dc859 | 600 | return send_config_update_key(sdi, key, var); |
a42a39ac | 601 | } |
6bcb3ee8 | 602 | |
a42a39ac JH |
603 | static int send_freq_update(struct sr_dev_inst *sdi, unsigned int freq) |
604 | { | |
605 | return do_config_update(sdi, SR_CONF_OUTPUT_FREQUENCY, | |
b94dd07b | 606 | g_variant_new_double(frequencies[freq])); |
a42a39ac | 607 | } |
6bcb3ee8 | 608 | |
a42a39ac JH |
609 | static int send_model_update(struct sr_dev_inst *sdi, unsigned int model) |
610 | { | |
611 | return do_config_update(sdi, SR_CONF_EQUIV_CIRCUIT_MODEL, | |
612 | g_variant_new_string(models[model])); | |
6bcb3ee8 JH |
613 | } |
614 | ||
615 | static void handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt) | |
616 | { | |
617 | struct sr_datafeed_packet packet; | |
7ffcf587 UH |
618 | struct sr_datafeed_analog analog; |
619 | struct sr_analog_encoding encoding; | |
620 | struct sr_analog_meaning meaning; | |
621 | struct sr_analog_spec spec; | |
6bcb3ee8 | 622 | struct dev_context *devc; |
a42a39ac | 623 | unsigned int val; |
6bcb3ee8 | 624 | float floatval; |
a6413fa5 | 625 | gboolean frame; |
6bcb3ee8 JH |
626 | |
627 | devc = sdi->priv; | |
628 | ||
a42a39ac JH |
629 | val = parse_freq(pkt); |
630 | if (val != devc->freq) { | |
631 | if (send_freq_update(sdi, val) == SR_OK) | |
632 | devc->freq = val; | |
633 | else | |
634 | return; | |
635 | } | |
636 | ||
a42a39ac JH |
637 | val = parse_model(pkt); |
638 | if (val != devc->model) { | |
639 | if (send_model_update(sdi, val) == SR_OK) | |
640 | devc->model = val; | |
6bcb3ee8 JH |
641 | else |
642 | return; | |
643 | } | |
644 | ||
a6413fa5 | 645 | frame = FALSE; |
6bcb3ee8 | 646 | |
869c8375 | 647 | /* Note: digits/spec_digits will be overridden later. */ |
7ffcf587 | 648 | sr_analog_init(&analog, &encoding, &meaning, &spec, 0); |
6bcb3ee8 JH |
649 | |
650 | analog.num_samples = 1; | |
651 | analog.data = &floatval; | |
652 | ||
7ffcf587 | 653 | analog.meaning->channels = g_slist_append(NULL, sdi->channels->data); |
6bcb3ee8 JH |
654 | |
655 | parse_measurement(pkt, &floatval, &analog, 0); | |
7ffcf587 | 656 | if (analog.meaning->mq != 0) { |
a6413fa5 JH |
657 | if (!frame) { |
658 | packet.type = SR_DF_FRAME_BEGIN; | |
695dc859 | 659 | sr_session_send(sdi, &packet); |
a6413fa5 JH |
660 | frame = TRUE; |
661 | } | |
662 | ||
7ffcf587 | 663 | packet.type = SR_DF_ANALOG; |
a6413fa5 JH |
664 | packet.payload = &analog; |
665 | ||
695dc859 | 666 | sr_session_send(sdi, &packet); |
6bcb3ee8 JH |
667 | } |
668 | ||
7ffcf587 UH |
669 | g_slist_free(analog.meaning->channels); |
670 | analog.meaning->channels = g_slist_append(NULL, sdi->channels->next->data); | |
6bcb3ee8 JH |
671 | |
672 | parse_measurement(pkt, &floatval, &analog, 1); | |
7ffcf587 | 673 | if (analog.meaning->mq != 0) { |
a6413fa5 JH |
674 | if (!frame) { |
675 | packet.type = SR_DF_FRAME_BEGIN; | |
695dc859 | 676 | sr_session_send(sdi, &packet); |
a6413fa5 JH |
677 | frame = TRUE; |
678 | } | |
679 | ||
7ffcf587 | 680 | packet.type = SR_DF_ANALOG; |
a6413fa5 JH |
681 | packet.payload = &analog; |
682 | ||
695dc859 | 683 | sr_session_send(sdi, &packet); |
6bcb3ee8 JH |
684 | } |
685 | ||
7ffcf587 | 686 | g_slist_free(analog.meaning->channels); |
80e20c10 | 687 | |
a6413fa5 JH |
688 | if (frame) { |
689 | packet.type = SR_DF_FRAME_END; | |
695dc859 | 690 | sr_session_send(sdi, &packet); |
787ec9db | 691 | dev_limit_counter_inc(&devc->frame_count); |
a6413fa5 | 692 | } |
6bcb3ee8 JH |
693 | } |
694 | ||
695 | static int handle_new_data(struct sr_dev_inst *sdi) | |
696 | { | |
697 | struct dev_context *devc; | |
698 | uint8_t *pkt; | |
699 | int ret; | |
700 | ||
701 | devc = sdi->priv; | |
702 | ||
703 | ret = dev_buffer_fill_serial(devc->buf, sdi); | |
704 | if (ret < 0) | |
705 | return ret; | |
706 | ||
707 | while ((pkt = dev_buffer_packet_find(devc->buf, packet_valid, | |
708 | PACKET_SIZE))) | |
709 | handle_packet(sdi, pkt); | |
710 | ||
711 | return SR_OK; | |
712 | } | |
713 | ||
714 | static int receive_data(int fd, int revents, void *cb_data) | |
715 | { | |
716 | struct sr_dev_inst *sdi; | |
717 | struct dev_context *devc; | |
718 | ||
719 | (void)fd; | |
720 | ||
721 | if (!(sdi = cb_data)) | |
722 | return TRUE; | |
723 | ||
724 | if (!(devc = sdi->priv)) | |
725 | return TRUE; | |
726 | ||
727 | if (revents == G_IO_IN) { | |
728 | /* Serial data arrived. */ | |
729 | handle_new_data(sdi); | |
730 | } | |
731 | ||
787ec9db | 732 | if (dev_limit_counter_limit_reached(&devc->frame_count) || |
6bcb3ee8 | 733 | dev_time_limit_reached(&devc->time_count)) |
695dc859 | 734 | sdi->driver->dev_acquisition_stop(sdi); |
6bcb3ee8 JH |
735 | |
736 | return TRUE; | |
737 | } | |
738 | ||
6bcb3ee8 JH |
739 | static const char *const channel_names[] = { "P1", "P2" }; |
740 | ||
741 | static int setup_channels(struct sr_dev_inst *sdi) | |
742 | { | |
743 | unsigned int i; | |
6bcb3ee8 | 744 | |
5e23fcab ML |
745 | for (i = 0; i < ARRAY_SIZE(channel_names); i++) |
746 | sr_channel_new(sdi, i, SR_CHANNEL_ANALOG, TRUE, channel_names[i]); | |
6bcb3ee8 | 747 | |
6b7e644e | 748 | return SR_OK; |
6bcb3ee8 JH |
749 | } |
750 | ||
751 | SR_PRIV void es51919_serial_clean(void *priv) | |
752 | { | |
753 | struct dev_context *devc; | |
754 | ||
755 | if (!(devc = priv)) | |
756 | return; | |
757 | ||
758 | dev_buffer_destroy(devc->buf); | |
759 | g_free(devc); | |
760 | } | |
761 | ||
762 | SR_PRIV struct sr_dev_inst *es51919_serial_scan(GSList *options, | |
763 | const char *vendor, | |
764 | const char *model) | |
765 | { | |
766 | struct sr_serial_dev_inst *serial; | |
767 | struct sr_dev_inst *sdi; | |
768 | struct dev_context *devc; | |
769 | int ret; | |
770 | ||
771 | serial = NULL; | |
772 | sdi = NULL; | |
773 | devc = NULL; | |
774 | ||
775 | if (!(serial = serial_dev_new(options, "9600/8n1/rts=1/dtr=1"))) | |
776 | goto scan_cleanup; | |
777 | ||
778 | ret = serial_stream_check(serial, PACKET_SIZE, packet_valid, | |
779 | 3000, 9600); | |
780 | if (ret != SR_OK) | |
781 | goto scan_cleanup; | |
782 | ||
783 | sr_info("Found device on port %s.", serial->port); | |
784 | ||
aac29cc1 | 785 | sdi = g_malloc0(sizeof(struct sr_dev_inst)); |
0af636be UH |
786 | sdi->status = SR_ST_INACTIVE; |
787 | sdi->vendor = g_strdup(vendor); | |
788 | sdi->model = g_strdup(model); | |
f57d8ffe | 789 | devc = g_malloc0(sizeof(struct dev_context)); |
91219afc | 790 | devc->buf = dev_buffer_new(PACKET_SIZE * 8); |
6bcb3ee8 JH |
791 | sdi->inst_type = SR_INST_SERIAL; |
792 | sdi->conn = serial; | |
6bcb3ee8 JH |
793 | sdi->priv = devc; |
794 | ||
795 | if (setup_channels(sdi) != SR_OK) | |
796 | goto scan_cleanup; | |
797 | ||
798 | return sdi; | |
799 | ||
800 | scan_cleanup: | |
801 | es51919_serial_clean(devc); | |
802 | if (sdi) | |
803 | sr_dev_inst_free(sdi); | |
804 | if (serial) | |
805 | sr_serial_dev_inst_free(serial); | |
806 | ||
807 | return NULL; | |
808 | } | |
809 | ||
810 | SR_PRIV int es51919_serial_config_get(uint32_t key, GVariant **data, | |
811 | const struct sr_dev_inst *sdi, | |
812 | const struct sr_channel_group *cg) | |
813 | { | |
814 | struct dev_context *devc; | |
815 | ||
816 | (void)cg; | |
817 | ||
709468ba | 818 | devc = sdi->priv; |
6bcb3ee8 JH |
819 | |
820 | switch (key) { | |
821 | case SR_CONF_OUTPUT_FREQUENCY: | |
b94dd07b | 822 | *data = g_variant_new_double(frequencies[devc->freq]); |
6bcb3ee8 | 823 | break; |
a42a39ac JH |
824 | case SR_CONF_EQUIV_CIRCUIT_MODEL: |
825 | *data = g_variant_new_string(models[devc->model]); | |
826 | break; | |
6bcb3ee8 | 827 | default: |
6bcb3ee8 JH |
828 | return SR_ERR_NA; |
829 | } | |
830 | ||
831 | return SR_OK; | |
832 | } | |
833 | ||
834 | SR_PRIV int es51919_serial_config_set(uint32_t key, GVariant *data, | |
835 | const struct sr_dev_inst *sdi, | |
836 | const struct sr_channel_group *cg) | |
837 | { | |
838 | struct dev_context *devc; | |
839 | uint64_t val; | |
840 | ||
841 | (void)cg; | |
842 | ||
843 | if (!(devc = sdi->priv)) | |
844 | return SR_ERR_BUG; | |
845 | ||
846 | switch (key) { | |
847 | case SR_CONF_LIMIT_MSEC: | |
848 | val = g_variant_get_uint64(data); | |
849 | dev_time_limit_set(&devc->time_count, val); | |
850 | sr_dbg("Setting time limit to %" PRIu64 ".", val); | |
851 | break; | |
787ec9db | 852 | case SR_CONF_LIMIT_FRAMES: |
6bcb3ee8 | 853 | val = g_variant_get_uint64(data); |
787ec9db JH |
854 | dev_limit_counter_limit_set(&devc->frame_count, val); |
855 | sr_dbg("Setting frame limit to %" PRIu64 ".", val); | |
6bcb3ee8 JH |
856 | break; |
857 | default: | |
858 | sr_spew("%s: Unsupported key %u", __func__, key); | |
859 | return SR_ERR_NA; | |
860 | } | |
861 | ||
862 | return SR_OK; | |
863 | } | |
864 | ||
865 | static const uint32_t scanopts[] = { | |
866 | SR_CONF_CONN, | |
867 | SR_CONF_SERIALCOMM, | |
868 | }; | |
869 | ||
870 | static const uint32_t devopts[] = { | |
b9a348f5 | 871 | SR_CONF_LCRMETER, |
6bcb3ee8 | 872 | SR_CONF_CONTINUOUS, |
787ec9db | 873 | SR_CONF_LIMIT_FRAMES | SR_CONF_SET, |
6bcb3ee8 JH |
874 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, |
875 | SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_LIST, | |
a42a39ac | 876 | SR_CONF_EQUIV_CIRCUIT_MODEL | SR_CONF_GET | SR_CONF_LIST, |
6bcb3ee8 JH |
877 | }; |
878 | ||
879 | static const struct std_opt_desc opts = { | |
880 | scanopts, ARRAY_SIZE(scanopts), | |
881 | devopts, ARRAY_SIZE(devopts), | |
882 | }; | |
883 | ||
884 | SR_PRIV int es51919_serial_config_list(uint32_t key, GVariant **data, | |
885 | const struct sr_dev_inst *sdi, | |
886 | const struct sr_channel_group *cg) | |
887 | { | |
888 | (void)sdi; | |
889 | (void)cg; | |
890 | ||
891 | if (std_config_list(key, data, &opts) == SR_OK) | |
892 | return SR_OK; | |
893 | ||
894 | switch (key) { | |
895 | case SR_CONF_OUTPUT_FREQUENCY: | |
b94dd07b AG |
896 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_DOUBLE, |
897 | frequencies, ARRAY_SIZE(frequencies), sizeof(double)); | |
6bcb3ee8 | 898 | break; |
a42a39ac JH |
899 | case SR_CONF_EQUIV_CIRCUIT_MODEL: |
900 | *data = g_variant_new_strv(models, ARRAY_SIZE(models)); | |
901 | break; | |
6bcb3ee8 | 902 | default: |
6bcb3ee8 JH |
903 | return SR_ERR_NA; |
904 | } | |
905 | ||
906 | return SR_OK; | |
907 | } | |
908 | ||
695dc859 | 909 | SR_PRIV int es51919_serial_acquisition_start(const struct sr_dev_inst *sdi) |
6bcb3ee8 JH |
910 | { |
911 | struct dev_context *devc; | |
912 | struct sr_serial_dev_inst *serial; | |
913 | ||
914 | if (sdi->status != SR_ST_ACTIVE) | |
915 | return SR_ERR_DEV_CLOSED; | |
916 | ||
917 | if (!(devc = sdi->priv)) | |
918 | return SR_ERR_BUG; | |
919 | ||
787ec9db | 920 | dev_limit_counter_start(&devc->frame_count); |
6bcb3ee8 JH |
921 | dev_time_counter_start(&devc->time_count); |
922 | ||
bee2b016 | 923 | std_session_send_df_header(sdi); |
6bcb3ee8 JH |
924 | |
925 | /* Poll every 50ms, or whenever some data comes in. */ | |
926 | serial = sdi->conn; | |
927 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
928 | receive_data, (void *)sdi); | |
929 | ||
930 | return SR_OK; | |
931 | } |