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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> | |
c1aae900 | 24 | #include <libsigrok/libsigrok.h> |
6bcb3ee8 JH |
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; | |
a42a39ac JH |
308 | } |
309 | ||
6bcb3ee8 JH |
310 | /* |
311 | * Cyrustek ES51919 LCR chipset host protocol. | |
312 | * | |
313 | * Public official documentation does not contain the protocol | |
314 | * description, so this is all based on reverse engineering. | |
315 | * | |
316 | * Packet structure (17 bytes): | |
317 | * | |
318 | * 0x00: header1 ?? (0x00) | |
319 | * 0x01: header2 ?? (0x0d) | |
320 | * | |
321 | * 0x02: flags | |
322 | * bit 0 = hold enabled | |
323 | * bit 1 = reference shown (in delta mode) | |
324 | * bit 2 = delta mode | |
325 | * bit 3 = calibration mode | |
326 | * bit 4 = sorting mode | |
327 | * bit 5 = LCR mode | |
328 | * bit 6 = auto mode | |
329 | * bit 7 = parallel measurement (vs. serial) | |
330 | * | |
331 | * 0x03: config | |
332 | * bit 0-4 = ??? (0x10) | |
333 | * bit 5-7 = test frequency | |
334 | * 0 = 100 Hz | |
335 | * 1 = 120 Hz | |
336 | * 2 = 1 kHz | |
337 | * 3 = 10 kHz | |
338 | * 4 = 100 kHz | |
339 | * 5 = 0 Hz (DC) | |
340 | * | |
341 | * 0x04: tolerance (sorting mode) | |
342 | * 0 = not set | |
343 | * 3 = +-0.25% | |
344 | * 4 = +-0.5% | |
345 | * 5 = +-1% | |
346 | * 6 = +-2% | |
347 | * 7 = +-5% | |
348 | * 8 = +-10% | |
349 | * 9 = +-20% | |
350 | * 10 = -20+80% | |
351 | * | |
352 | * 0x05-0x09: primary measurement | |
353 | * 0x05: measured quantity | |
354 | * 1 = inductance | |
355 | * 2 = capacitance | |
356 | * 3 = resistance | |
357 | * 4 = DC resistance | |
358 | * 0x06: measurement MSB (0x4e20 = 20000 = outside limits) | |
359 | * 0x07: measurement LSB | |
360 | * 0x08: measurement info | |
361 | * bit 0-2 = decimal point multiplier (10^-val) | |
362 | * bit 3-7 = unit | |
363 | * 0 = no unit | |
364 | * 1 = Ohm | |
365 | * 2 = kOhm | |
366 | * 3 = MOhm | |
367 | * 5 = uH | |
368 | * 6 = mH | |
369 | * 7 = H | |
370 | * 8 = kH | |
371 | * 9 = pF | |
372 | * 10 = nF | |
373 | * 11 = uF | |
374 | * 12 = mF | |
375 | * 13 = % | |
376 | * 14 = degree | |
377 | * 0x09: measurement status | |
378 | * bit 0-3 = status | |
379 | * 0 = normal (measurement shown) | |
380 | * 1 = blank (nothing shown) | |
381 | * 2 = lines ("----") | |
99d090d8 | 382 | * 3 = outside limits ("OL") |
6bcb3ee8 JH |
383 | * 7 = pass ("PASS") |
384 | * 8 = fail ("FAIL") | |
385 | * 9 = open ("OPEn") | |
386 | * 10 = shorted ("Srt") | |
387 | * bit 4-6 = ??? (maybe part of same field with 0-3) | |
388 | * bit 7 = ??? (some independent flag) | |
389 | * | |
390 | * 0x0a-0x0e: secondary measurement | |
391 | * 0x0a: measured quantity | |
392 | * 0 = none | |
393 | * 1 = dissipation factor | |
394 | * 2 = quality factor | |
395 | * 3 = parallel AC resistance / ESR | |
396 | * 4 = phase angle | |
397 | * 0x0b-0x0e: like primary measurement | |
398 | * | |
399 | * 0x0f: footer1 (0x0d) ? | |
400 | * 0x10: footer2 (0x0a) ? | |
401 | */ | |
402 | ||
403 | #define PACKET_SIZE 17 | |
404 | ||
b94dd07b | 405 | static const double frequencies[] = { |
6bcb3ee8 JH |
406 | 100, 120, 1000, 10000, 100000, 0, |
407 | }; | |
408 | ||
a42a39ac JH |
409 | enum { MODEL_NONE, MODEL_PAR, MODEL_SER, MODEL_AUTO, }; |
410 | ||
411 | static const char *const models[] = { | |
412 | "NONE", "PARALLEL", "SERIES", "AUTO", | |
413 | }; | |
414 | ||
6bcb3ee8 JH |
415 | /** Private, per-device-instance driver context. */ |
416 | struct dev_context { | |
417 | /** Opaque pointer passed in by the frontend. */ | |
418 | void *cb_data; | |
419 | ||
787ec9db JH |
420 | /** The number of frames. */ |
421 | struct dev_limit_counter frame_count; | |
6bcb3ee8 JH |
422 | |
423 | /** The time limit counter. */ | |
424 | struct dev_time_counter time_count; | |
425 | ||
426 | /** Data buffer. */ | |
427 | struct dev_buffer *buf; | |
428 | ||
429 | /** The frequency of the test signal (index to frequencies[]). */ | |
430 | unsigned int freq; | |
a42a39ac | 431 | |
a42a39ac JH |
432 | /** Equivalent circuit model (index to models[]). */ |
433 | unsigned int model; | |
6bcb3ee8 JH |
434 | }; |
435 | ||
a42a39ac | 436 | static const uint8_t *pkt_to_buf(const uint8_t *pkt, int is_secondary) |
6bcb3ee8 | 437 | { |
a42a39ac JH |
438 | return is_secondary ? pkt + 10 : pkt + 5; |
439 | } | |
440 | ||
441 | static int parse_mq(const uint8_t *pkt, int is_secondary, int is_parallel) | |
442 | { | |
443 | const uint8_t *buf; | |
444 | ||
445 | buf = pkt_to_buf(pkt, is_secondary); | |
446 | ||
6bcb3ee8 JH |
447 | switch (is_secondary << 8 | buf[0]) { |
448 | case 0x001: | |
1beccaed | 449 | return is_parallel ? |
c7c8994c | 450 | SR_MQ_PARALLEL_INDUCTANCE : SR_MQ_SERIES_INDUCTANCE; |
6bcb3ee8 JH |
451 | case 0x002: |
452 | return is_parallel ? | |
c7c8994c | 453 | SR_MQ_PARALLEL_CAPACITANCE : SR_MQ_SERIES_CAPACITANCE; |
6bcb3ee8 JH |
454 | case 0x003: |
455 | case 0x103: | |
456 | return is_parallel ? | |
c7c8994c | 457 | SR_MQ_PARALLEL_RESISTANCE : SR_MQ_SERIES_RESISTANCE; |
6bcb3ee8 JH |
458 | case 0x004: |
459 | return SR_MQ_RESISTANCE; | |
460 | case 0x100: | |
461 | return SR_MQ_DIFFERENCE; | |
462 | case 0x101: | |
463 | return SR_MQ_DISSIPATION_FACTOR; | |
464 | case 0x102: | |
465 | return SR_MQ_QUALITY_FACTOR; | |
466 | case 0x104: | |
467 | return SR_MQ_PHASE_ANGLE; | |
468 | } | |
469 | ||
470 | sr_err("Unknown quantity 0x%03x.", is_secondary << 8 | buf[0]); | |
471 | ||
472 | return -1; | |
473 | } | |
474 | ||
475 | static float parse_value(const uint8_t *buf) | |
476 | { | |
477 | static const float decimals[] = { | |
478 | 1, 1e-1, 1e-2, 1e-3, 1e-4, 1e-5, 1e-6, 1e-7 | |
479 | }; | |
480 | int16_t val; | |
481 | ||
482 | val = (buf[1] << 8) | buf[2]; | |
483 | return (float)val * decimals[buf[3] & 7]; | |
484 | } | |
485 | ||
486 | static void parse_measurement(const uint8_t *pkt, float *floatval, | |
487 | struct sr_datafeed_analog *analog, | |
488 | int is_secondary) | |
489 | { | |
490 | static const struct { | |
491 | int unit; | |
492 | float mult; | |
493 | } units[] = { | |
494 | { SR_UNIT_UNITLESS, 1 }, /* no unit */ | |
495 | { SR_UNIT_OHM, 1 }, /* Ohm */ | |
496 | { SR_UNIT_OHM, 1e3 }, /* kOhm */ | |
497 | { SR_UNIT_OHM, 1e6 }, /* MOhm */ | |
498 | { -1, 0 }, /* ??? */ | |
499 | { SR_UNIT_HENRY, 1e-6 }, /* uH */ | |
500 | { SR_UNIT_HENRY, 1e-3 }, /* mH */ | |
501 | { SR_UNIT_HENRY, 1 }, /* H */ | |
502 | { SR_UNIT_HENRY, 1e3 }, /* kH */ | |
503 | { SR_UNIT_FARAD, 1e-12 }, /* pF */ | |
504 | { SR_UNIT_FARAD, 1e-9 }, /* nF */ | |
505 | { SR_UNIT_FARAD, 1e-6 }, /* uF */ | |
506 | { SR_UNIT_FARAD, 1e-3 }, /* mF */ | |
507 | { SR_UNIT_PERCENTAGE, 1 }, /* % */ | |
508 | { SR_UNIT_DEGREE, 1 } /* degree */ | |
509 | }; | |
510 | const uint8_t *buf; | |
511 | int state; | |
512 | ||
a42a39ac | 513 | buf = pkt_to_buf(pkt, is_secondary); |
6bcb3ee8 JH |
514 | |
515 | analog->mq = -1; | |
516 | analog->mqflags = 0; | |
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) | |
530 | analog->mqflags |= SR_MQFLAG_HOLD; | |
531 | if (pkt[2] & 0x02) | |
532 | analog->mqflags |= SR_MQFLAG_REFERENCE; | |
6bcb3ee8 JH |
533 | } else { |
534 | if (pkt[2] & 0x04) | |
535 | analog->mqflags |= SR_MQFLAG_RELATIVE; | |
536 | } | |
537 | ||
a42a39ac | 538 | if ((analog->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); | |
543 | analog->mq = -1; | |
544 | return; | |
545 | } | |
546 | ||
547 | analog->unit = units[buf[3] >> 3].unit; | |
548 | ||
549 | *floatval = parse_value(buf); | |
550 | *floatval *= (state == 0) ? units[buf[3] >> 3].mult : INFINITY; | |
551 | } | |
552 | ||
a42a39ac | 553 | static unsigned int parse_freq(const uint8_t *pkt) |
6bcb3ee8 JH |
554 | { |
555 | unsigned int freq; | |
556 | ||
557 | freq = pkt[3] >> 5; | |
558 | ||
559 | if (freq >= ARRAY_SIZE(frequencies)) { | |
560 | sr_err("Unknown frequency %u.", freq); | |
561 | freq = ARRAY_SIZE(frequencies) - 1; | |
562 | } | |
563 | ||
564 | return freq; | |
565 | } | |
566 | ||
a42a39ac JH |
567 | static unsigned int parse_model(const uint8_t *pkt) |
568 | { | |
569 | if (pkt[2] & 0x40) | |
570 | return MODEL_AUTO; | |
571 | else if (parse_mq(pkt, 0, 0) == SR_MQ_RESISTANCE) | |
572 | return MODEL_NONE; | |
573 | else if (pkt[2] & 0x80) | |
574 | return MODEL_PAR; | |
575 | else | |
576 | return MODEL_SER; | |
a42a39ac JH |
577 | } |
578 | ||
6bcb3ee8 JH |
579 | static gboolean packet_valid(const uint8_t *pkt) |
580 | { | |
581 | /* | |
582 | * If the first two bytes of the packet are indeed a constant | |
583 | * header, they should be checked too. Since we don't know it | |
584 | * for sure, we'll just check the last two for now since they | |
585 | * seem to be constant just like in the other Cyrustek chipset | |
586 | * protocols. | |
587 | */ | |
588 | if (pkt[15] == 0xd && pkt[16] == 0xa) | |
589 | return TRUE; | |
590 | ||
591 | return FALSE; | |
592 | } | |
593 | ||
a42a39ac JH |
594 | static int do_config_update(struct sr_dev_inst *sdi, uint32_t key, |
595 | GVariant *var) | |
6bcb3ee8 | 596 | { |
6bcb3ee8 | 597 | struct dev_context *devc; |
6bcb3ee8 JH |
598 | |
599 | devc = sdi->priv; | |
600 | ||
a42a39ac JH |
601 | return send_config_update_key(devc->cb_data, key, var); |
602 | } | |
6bcb3ee8 | 603 | |
a42a39ac JH |
604 | static int send_freq_update(struct sr_dev_inst *sdi, unsigned int freq) |
605 | { | |
606 | return do_config_update(sdi, SR_CONF_OUTPUT_FREQUENCY, | |
b94dd07b | 607 | g_variant_new_double(frequencies[freq])); |
a42a39ac | 608 | } |
6bcb3ee8 | 609 | |
a42a39ac JH |
610 | static int send_model_update(struct sr_dev_inst *sdi, unsigned int model) |
611 | { | |
612 | return do_config_update(sdi, SR_CONF_EQUIV_CIRCUIT_MODEL, | |
613 | g_variant_new_string(models[model])); | |
6bcb3ee8 JH |
614 | } |
615 | ||
616 | static void handle_packet(struct sr_dev_inst *sdi, const uint8_t *pkt) | |
617 | { | |
618 | struct sr_datafeed_packet packet; | |
619 | struct sr_datafeed_analog analog; | |
620 | struct dev_context *devc; | |
a42a39ac | 621 | unsigned int val; |
6bcb3ee8 | 622 | float floatval; |
a6413fa5 | 623 | gboolean frame; |
6bcb3ee8 JH |
624 | |
625 | devc = sdi->priv; | |
626 | ||
a42a39ac JH |
627 | val = parse_freq(pkt); |
628 | if (val != devc->freq) { | |
629 | if (send_freq_update(sdi, val) == SR_OK) | |
630 | devc->freq = val; | |
631 | else | |
632 | return; | |
633 | } | |
634 | ||
a42a39ac JH |
635 | val = parse_model(pkt); |
636 | if (val != devc->model) { | |
637 | if (send_model_update(sdi, val) == SR_OK) | |
638 | devc->model = val; | |
6bcb3ee8 JH |
639 | else |
640 | return; | |
641 | } | |
642 | ||
a6413fa5 | 643 | frame = FALSE; |
6bcb3ee8 JH |
644 | |
645 | memset(&analog, 0, sizeof(analog)); | |
646 | ||
647 | analog.num_samples = 1; | |
648 | analog.data = &floatval; | |
649 | ||
6bcb3ee8 JH |
650 | analog.channels = g_slist_append(NULL, sdi->channels->data); |
651 | ||
652 | parse_measurement(pkt, &floatval, &analog, 0); | |
653 | if (analog.mq >= 0) { | |
a6413fa5 JH |
654 | if (!frame) { |
655 | packet.type = SR_DF_FRAME_BEGIN; | |
656 | sr_session_send(devc->cb_data, &packet); | |
657 | frame = TRUE; | |
658 | } | |
659 | ||
660 | packet.type = SR_DF_ANALOG; | |
661 | packet.payload = &analog; | |
662 | ||
663 | sr_session_send(devc->cb_data, &packet); | |
6bcb3ee8 JH |
664 | } |
665 | ||
80e20c10 | 666 | g_slist_free(analog.channels); |
6bcb3ee8 JH |
667 | analog.channels = g_slist_append(NULL, sdi->channels->next->data); |
668 | ||
669 | parse_measurement(pkt, &floatval, &analog, 1); | |
670 | if (analog.mq >= 0) { | |
a6413fa5 JH |
671 | if (!frame) { |
672 | packet.type = SR_DF_FRAME_BEGIN; | |
673 | sr_session_send(devc->cb_data, &packet); | |
674 | frame = TRUE; | |
675 | } | |
676 | ||
677 | packet.type = SR_DF_ANALOG; | |
678 | packet.payload = &analog; | |
679 | ||
680 | sr_session_send(devc->cb_data, &packet); | |
6bcb3ee8 JH |
681 | } |
682 | ||
80e20c10 DG |
683 | g_slist_free(analog.channels); |
684 | ||
a6413fa5 JH |
685 | if (frame) { |
686 | packet.type = SR_DF_FRAME_END; | |
687 | sr_session_send(devc->cb_data, &packet); | |
787ec9db | 688 | dev_limit_counter_inc(&devc->frame_count); |
a6413fa5 | 689 | } |
6bcb3ee8 JH |
690 | } |
691 | ||
692 | static int handle_new_data(struct sr_dev_inst *sdi) | |
693 | { | |
694 | struct dev_context *devc; | |
695 | uint8_t *pkt; | |
696 | int ret; | |
697 | ||
698 | devc = sdi->priv; | |
699 | ||
700 | ret = dev_buffer_fill_serial(devc->buf, sdi); | |
701 | if (ret < 0) | |
702 | return ret; | |
703 | ||
704 | while ((pkt = dev_buffer_packet_find(devc->buf, packet_valid, | |
705 | PACKET_SIZE))) | |
706 | handle_packet(sdi, pkt); | |
707 | ||
708 | return SR_OK; | |
709 | } | |
710 | ||
711 | static int receive_data(int fd, int revents, void *cb_data) | |
712 | { | |
713 | struct sr_dev_inst *sdi; | |
714 | struct dev_context *devc; | |
715 | ||
716 | (void)fd; | |
717 | ||
718 | if (!(sdi = cb_data)) | |
719 | return TRUE; | |
720 | ||
721 | if (!(devc = sdi->priv)) | |
722 | return TRUE; | |
723 | ||
724 | if (revents == G_IO_IN) { | |
725 | /* Serial data arrived. */ | |
726 | handle_new_data(sdi); | |
727 | } | |
728 | ||
787ec9db | 729 | if (dev_limit_counter_limit_reached(&devc->frame_count) || |
6bcb3ee8 JH |
730 | dev_time_limit_reached(&devc->time_count)) |
731 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
732 | ||
733 | return TRUE; | |
734 | } | |
735 | ||
6bcb3ee8 JH |
736 | static const char *const channel_names[] = { "P1", "P2" }; |
737 | ||
738 | static int setup_channels(struct sr_dev_inst *sdi) | |
739 | { | |
740 | unsigned int i; | |
741 | int ret; | |
742 | ||
743 | ret = SR_ERR_BUG; | |
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 JH |
747 | |
748 | return ret; | |
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 | ||
818 | if (!(devc = sdi->priv)) | |
819 | return SR_ERR_BUG; | |
820 | ||
821 | switch (key) { | |
822 | case SR_CONF_OUTPUT_FREQUENCY: | |
b94dd07b | 823 | *data = g_variant_new_double(frequencies[devc->freq]); |
6bcb3ee8 | 824 | break; |
a42a39ac JH |
825 | case SR_CONF_EQUIV_CIRCUIT_MODEL: |
826 | *data = g_variant_new_string(models[devc->model]); | |
827 | break; | |
6bcb3ee8 JH |
828 | default: |
829 | sr_spew("%s: Unsupported key %u", __func__, key); | |
830 | return SR_ERR_NA; | |
831 | } | |
832 | ||
833 | return SR_OK; | |
834 | } | |
835 | ||
836 | SR_PRIV int es51919_serial_config_set(uint32_t key, GVariant *data, | |
837 | const struct sr_dev_inst *sdi, | |
838 | const struct sr_channel_group *cg) | |
839 | { | |
840 | struct dev_context *devc; | |
841 | uint64_t val; | |
842 | ||
843 | (void)cg; | |
844 | ||
845 | if (!(devc = sdi->priv)) | |
846 | return SR_ERR_BUG; | |
847 | ||
848 | switch (key) { | |
849 | case SR_CONF_LIMIT_MSEC: | |
850 | val = g_variant_get_uint64(data); | |
851 | dev_time_limit_set(&devc->time_count, val); | |
852 | sr_dbg("Setting time limit to %" PRIu64 ".", val); | |
853 | break; | |
787ec9db | 854 | case SR_CONF_LIMIT_FRAMES: |
6bcb3ee8 | 855 | val = g_variant_get_uint64(data); |
787ec9db JH |
856 | dev_limit_counter_limit_set(&devc->frame_count, val); |
857 | sr_dbg("Setting frame limit to %" PRIu64 ".", val); | |
6bcb3ee8 JH |
858 | break; |
859 | default: | |
860 | sr_spew("%s: Unsupported key %u", __func__, key); | |
861 | return SR_ERR_NA; | |
862 | } | |
863 | ||
864 | return SR_OK; | |
865 | } | |
866 | ||
867 | static const uint32_t scanopts[] = { | |
868 | SR_CONF_CONN, | |
869 | SR_CONF_SERIALCOMM, | |
870 | }; | |
871 | ||
872 | static const uint32_t devopts[] = { | |
b9a348f5 | 873 | SR_CONF_LCRMETER, |
6bcb3ee8 | 874 | SR_CONF_CONTINUOUS, |
787ec9db | 875 | SR_CONF_LIMIT_FRAMES | SR_CONF_SET, |
6bcb3ee8 JH |
876 | SR_CONF_LIMIT_MSEC | SR_CONF_SET, |
877 | SR_CONF_OUTPUT_FREQUENCY | SR_CONF_GET | SR_CONF_LIST, | |
a42a39ac | 878 | SR_CONF_EQUIV_CIRCUIT_MODEL | SR_CONF_GET | SR_CONF_LIST, |
6bcb3ee8 JH |
879 | }; |
880 | ||
881 | static const struct std_opt_desc opts = { | |
882 | scanopts, ARRAY_SIZE(scanopts), | |
883 | devopts, ARRAY_SIZE(devopts), | |
884 | }; | |
885 | ||
886 | SR_PRIV int es51919_serial_config_list(uint32_t key, GVariant **data, | |
887 | const struct sr_dev_inst *sdi, | |
888 | const struct sr_channel_group *cg) | |
889 | { | |
890 | (void)sdi; | |
891 | (void)cg; | |
892 | ||
893 | if (std_config_list(key, data, &opts) == SR_OK) | |
894 | return SR_OK; | |
895 | ||
896 | switch (key) { | |
897 | case SR_CONF_OUTPUT_FREQUENCY: | |
b94dd07b AG |
898 | *data = g_variant_new_fixed_array(G_VARIANT_TYPE_DOUBLE, |
899 | frequencies, ARRAY_SIZE(frequencies), sizeof(double)); | |
6bcb3ee8 | 900 | break; |
a42a39ac JH |
901 | case SR_CONF_EQUIV_CIRCUIT_MODEL: |
902 | *data = g_variant_new_strv(models, ARRAY_SIZE(models)); | |
903 | break; | |
6bcb3ee8 JH |
904 | default: |
905 | sr_spew("%s: Unsupported key %u", __func__, key); | |
906 | return SR_ERR_NA; | |
907 | } | |
908 | ||
909 | return SR_OK; | |
910 | } | |
911 | ||
912 | SR_PRIV int es51919_serial_acquisition_start(const struct sr_dev_inst *sdi, | |
913 | void *cb_data) | |
914 | { | |
915 | struct dev_context *devc; | |
916 | struct sr_serial_dev_inst *serial; | |
917 | ||
918 | if (sdi->status != SR_ST_ACTIVE) | |
919 | return SR_ERR_DEV_CLOSED; | |
920 | ||
921 | if (!(devc = sdi->priv)) | |
922 | return SR_ERR_BUG; | |
923 | ||
924 | devc->cb_data = cb_data; | |
925 | ||
787ec9db | 926 | dev_limit_counter_start(&devc->frame_count); |
6bcb3ee8 JH |
927 | dev_time_counter_start(&devc->time_count); |
928 | ||
929 | /* Send header packet to the session bus. */ | |
930 | std_session_send_df_header(cb_data, LOG_PREFIX); | |
931 | ||
932 | /* Poll every 50ms, or whenever some data comes in. */ | |
933 | serial = sdi->conn; | |
934 | serial_source_add(sdi->session, serial, G_IO_IN, 50, | |
935 | receive_data, (void *)sdi); | |
936 | ||
937 | return SR_OK; | |
938 | } | |
939 | ||
940 | SR_PRIV int es51919_serial_acquisition_stop(struct sr_dev_inst *sdi, | |
941 | void *cb_data) | |
942 | { | |
943 | return std_serial_dev_acquisition_stop(sdi, cb_data, | |
944 | std_serial_dev_close, sdi->conn, LOG_PREFIX); | |
945 | } |