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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Martin Ling <martin-git@earth.li> | |
5 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> | |
6 | * Copyright (C) 2013 Mathias Grimmberger <mgri@zaphod.sax.de> | |
7 | * | |
8 | * This program is free software: you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation, either version 3 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
22 | #include <stdlib.h> | |
23 | #include <stdarg.h> | |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
26 | #include <string.h> | |
27 | #include <math.h> | |
28 | #include <ctype.h> | |
29 | #include <time.h> | |
30 | #include <glib.h> | |
31 | #include "libsigrok.h" | |
32 | #include "libsigrok-internal.h" | |
33 | #include "protocol.h" | |
34 | ||
35 | /* | |
36 | * This is a unified protocol driver for the DS1000 and DS2000 series. | |
37 | * | |
38 | * DS1000 support tested with a Rigol DS1102D. | |
39 | * | |
40 | * DS2000 support tested with a Rigol DS2072 using firmware version 01.01.00.02. | |
41 | * | |
42 | * The Rigol DS2000 series scopes try to adhere to the IEEE 488.2 (I think) | |
43 | * standard. If you want to read it - it costs real money... | |
44 | * | |
45 | * Every response from the scope has a linefeed appended because the | |
46 | * standard says so. In principle this could be ignored because sending the | |
47 | * next command clears the output queue of the scope. This driver tries to | |
48 | * avoid doing that because it may cause an error being generated inside the | |
49 | * scope and who knows what bugs the firmware has WRT this. | |
50 | * | |
51 | * Waveform data is transferred in a format called "arbitrary block program | |
52 | * data" specified in IEEE 488.2. See Agilents programming manuals for their | |
53 | * 2000/3000 series scopes for a nice description. | |
54 | * | |
55 | * Each data block from the scope has a header, e.g. "#900000001400". | |
56 | * The '#' marks the start of a block. | |
57 | * Next is one ASCII decimal digit between 1 and 9, this gives the number of | |
58 | * ASCII decimal digits following. | |
59 | * Last are the ASCII decimal digits giving the number of bytes (not | |
60 | * samples!) in the block. | |
61 | * | |
62 | * After this header as many data bytes as indicated follow. | |
63 | * | |
64 | * Each data block has a trailing linefeed too. | |
65 | */ | |
66 | ||
67 | static int parse_int(const char *str, int *ret) | |
68 | { | |
69 | char *e; | |
70 | long tmp; | |
71 | ||
72 | errno = 0; | |
73 | tmp = strtol(str, &e, 10); | |
74 | if (e == str || *e != '\0') { | |
75 | sr_dbg("Failed to parse integer: '%s'", str); | |
76 | return SR_ERR; | |
77 | } | |
78 | if (errno) { | |
79 | sr_dbg("Failed to parse integer: '%s', numerical overflow", str); | |
80 | return SR_ERR; | |
81 | } | |
82 | if (tmp > INT_MAX || tmp < INT_MIN) { | |
83 | sr_dbg("Failed to parse integer: '%s', value to large/small", str); | |
84 | return SR_ERR; | |
85 | } | |
86 | ||
87 | *ret = (int)tmp; | |
88 | return SR_OK; | |
89 | } | |
90 | ||
91 | /* Set the next event to wait for in rigol_ds_receive */ | |
92 | static void rigol_ds_set_wait_event(struct dev_context *devc, enum wait_events event) | |
93 | { | |
94 | if (event == WAIT_STOP) | |
95 | devc->wait_status = 2; | |
96 | else | |
97 | devc->wait_status = 1; | |
98 | devc->wait_event = event; | |
99 | } | |
100 | ||
101 | /* | |
102 | * Waiting for a event will return a timeout after 2 to 3 seconds in order | |
103 | * to not block the application. | |
104 | */ | |
105 | static int rigol_ds_event_wait(const struct sr_dev_inst *sdi, char status1, char status2) | |
106 | { | |
107 | char *buf; | |
108 | struct dev_context *devc; | |
109 | time_t start; | |
110 | ||
111 | if (!(devc = sdi->priv)) | |
112 | return SR_ERR; | |
113 | ||
114 | start = time(NULL); | |
115 | ||
116 | /* | |
117 | * Trigger status may return: | |
118 | * "TD" or "T'D" - triggered | |
119 | * "AUTO" - autotriggered | |
120 | * "RUN" - running | |
121 | * "WAIT" - waiting for trigger | |
122 | * "STOP" - stopped | |
123 | */ | |
124 | ||
125 | if (devc->wait_status == 1) { | |
126 | do { | |
127 | if (time(NULL) - start >= 3) { | |
128 | sr_dbg("Timeout waiting for trigger"); | |
129 | return SR_ERR_TIMEOUT; | |
130 | } | |
131 | ||
132 | if (sr_scpi_get_string(sdi->conn, ":TRIG:STAT?", &buf) != SR_OK) | |
133 | return SR_ERR; | |
134 | } while (buf[0] == status1 || buf[0] == status2); | |
135 | ||
136 | devc->wait_status = 2; | |
137 | } | |
138 | if (devc->wait_status == 2) { | |
139 | do { | |
140 | if (time(NULL) - start >= 3) { | |
141 | sr_dbg("Timeout waiting for trigger"); | |
142 | return SR_ERR_TIMEOUT; | |
143 | } | |
144 | ||
145 | if (sr_scpi_get_string(sdi->conn, ":TRIG:STAT?", &buf) != SR_OK) | |
146 | return SR_ERR; | |
147 | } while (buf[0] != status1 && buf[0] != status2); | |
148 | ||
149 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
150 | } | |
151 | ||
152 | return SR_OK; | |
153 | } | |
154 | ||
155 | /* | |
156 | * For live capture we need to wait for a new trigger event to ensure that | |
157 | * sample data is not returned twice. | |
158 | * | |
159 | * Unfortunately this will never really work because for sufficiently fast | |
160 | * timebases and trigger rates it just can't catch the status changes. | |
161 | * | |
162 | * What would be needed is a trigger event register with autoreset like the | |
163 | * Agilents have. The Rigols don't seem to have anything like this. | |
164 | * | |
165 | * The workaround is to only wait for the trigger when the timebase is slow | |
166 | * enough. Of course this means that for faster timebases sample data can be | |
167 | * returned multiple times, this effect is mitigated somewhat by sleeping | |
168 | * for about one sweep time in that case. | |
169 | */ | |
170 | static int rigol_ds_trigger_wait(const struct sr_dev_inst *sdi) | |
171 | { | |
172 | struct dev_context *devc; | |
173 | long s; | |
174 | ||
175 | if (!(devc = sdi->priv)) | |
176 | return SR_ERR; | |
177 | ||
178 | /* | |
179 | * If timebase < 50 msecs/DIV just sleep about one sweep time except | |
180 | * for really fast sweeps. | |
181 | */ | |
182 | if (devc->timebase < 0.0499) { | |
183 | if (devc->timebase > 0.99e-6) { | |
184 | /* | |
185 | * Timebase * num hor. divs * 85(%) * 1e6(usecs) / 100 | |
186 | * -> 85 percent of sweep time | |
187 | */ | |
188 | s = (devc->timebase * devc->model->series->num_horizontal_divs | |
189 | * 85e6) / 100L; | |
190 | sr_spew("Sleeping for %ld usecs instead of trigger-wait", s); | |
191 | g_usleep(s); | |
192 | } | |
193 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
194 | return SR_OK; | |
195 | } else { | |
196 | return rigol_ds_event_wait(sdi, 'T', 'A'); | |
197 | } | |
198 | } | |
199 | ||
200 | /* Wait for scope to got to "Stop" in single shot mode */ | |
201 | static int rigol_ds_stop_wait(const struct sr_dev_inst *sdi) | |
202 | { | |
203 | return rigol_ds_event_wait(sdi, 'S', 'S'); | |
204 | } | |
205 | ||
206 | /* Check that a single shot acquisition actually succeeded on the DS2000 */ | |
207 | static int rigol_ds_check_stop(const struct sr_dev_inst *sdi) | |
208 | { | |
209 | struct dev_context *devc; | |
210 | struct sr_channel *ch; | |
211 | int tmp; | |
212 | ||
213 | if (!(devc = sdi->priv)) | |
214 | return SR_ERR; | |
215 | ||
216 | ch = devc->channel_entry->data; | |
217 | ||
218 | if (devc->model->series->protocol != PROTOCOL_V3) | |
219 | return SR_OK; | |
220 | ||
221 | if (rigol_ds_config_set(sdi, ":WAV:SOUR CHAN%d", | |
222 | ch->index + 1) != SR_OK) | |
223 | return SR_ERR; | |
224 | /* Check that the number of samples will be accepted */ | |
225 | if (rigol_ds_config_set(sdi, ":WAV:POIN %d", devc->analog_frame_size) != SR_OK) | |
226 | return SR_ERR; | |
227 | if (sr_scpi_get_int(sdi->conn, "*ESR?", &tmp) != SR_OK) | |
228 | return SR_ERR; | |
229 | /* | |
230 | * If we get an "Execution error" the scope went from "Single" to | |
231 | * "Stop" without actually triggering. There is no waveform | |
232 | * displayed and trying to download one will fail - the scope thinks | |
233 | * it has 1400 samples (like display memory) and the driver thinks | |
234 | * it has a different number of samples. | |
235 | * | |
236 | * In that case just try to capture something again. Might still | |
237 | * fail in interesting ways. | |
238 | * | |
239 | * Ain't firmware fun? | |
240 | */ | |
241 | if (tmp & 0x10) { | |
242 | sr_warn("Single shot acquisition failed, retrying..."); | |
243 | /* Sleep a bit, otherwise the single shot will often fail */ | |
244 | g_usleep(500000); | |
245 | rigol_ds_config_set(sdi, ":SING"); | |
246 | rigol_ds_set_wait_event(devc, WAIT_STOP); | |
247 | return SR_ERR; | |
248 | } | |
249 | ||
250 | return SR_OK; | |
251 | } | |
252 | ||
253 | /* Wait for enough data becoming available in scope output buffer */ | |
254 | static int rigol_ds_block_wait(const struct sr_dev_inst *sdi) | |
255 | { | |
256 | char *buf; | |
257 | struct dev_context *devc; | |
258 | time_t start; | |
259 | int len; | |
260 | ||
261 | if (!(devc = sdi->priv)) | |
262 | return SR_ERR; | |
263 | ||
264 | if (devc->model->series->protocol == PROTOCOL_V3) { | |
265 | ||
266 | start = time(NULL); | |
267 | ||
268 | do { | |
269 | if (time(NULL) - start >= 3) { | |
270 | sr_dbg("Timeout waiting for data block"); | |
271 | return SR_ERR_TIMEOUT; | |
272 | } | |
273 | ||
274 | /* | |
275 | * The scope copies data really slowly from sample | |
276 | * memory to its output buffer, so try not to bother | |
277 | * it too much with SCPI requests but don't wait too | |
278 | * long for short sample frame sizes. | |
279 | */ | |
280 | g_usleep(devc->analog_frame_size < 15000 ? 100000 : 1000000); | |
281 | ||
282 | /* "READ,nnnn" (still working) or "IDLE,nnnn" (finished) */ | |
283 | if (sr_scpi_get_string(sdi->conn, ":WAV:STAT?", &buf) != SR_OK) | |
284 | return SR_ERR; | |
285 | ||
286 | if (parse_int(buf + 5, &len) != SR_OK) | |
287 | return SR_ERR; | |
288 | } while (buf[0] == 'R' && len < 1000000); | |
289 | } | |
290 | ||
291 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
292 | ||
293 | return SR_OK; | |
294 | } | |
295 | ||
296 | /* Send a configuration setting. */ | |
297 | SR_PRIV int rigol_ds_config_set(const struct sr_dev_inst *sdi, const char *format, ...) | |
298 | { | |
299 | struct dev_context *devc = sdi->priv; | |
300 | va_list args; | |
301 | int ret; | |
302 | ||
303 | va_start(args, format); | |
304 | ret = sr_scpi_send_variadic(sdi->conn, format, args); | |
305 | va_end(args); | |
306 | ||
307 | if (ret != SR_OK) | |
308 | return SR_ERR; | |
309 | ||
310 | if (devc->model->series->protocol == PROTOCOL_V2) { | |
311 | /* The DS1000 series needs this stupid delay, *OPC? doesn't work. */ | |
312 | sr_spew("delay %dms", 100); | |
313 | g_usleep(100000); | |
314 | return SR_OK; | |
315 | } else { | |
316 | return sr_scpi_get_opc(sdi->conn); | |
317 | } | |
318 | } | |
319 | ||
320 | /* Start capturing a new frameset */ | |
321 | SR_PRIV int rigol_ds_capture_start(const struct sr_dev_inst *sdi) | |
322 | { | |
323 | struct dev_context *devc; | |
324 | gchar *trig_mode; | |
325 | unsigned int num_channels, i, j; | |
326 | ||
327 | if (!(devc = sdi->priv)) | |
328 | return SR_ERR; | |
329 | ||
330 | sr_dbg("Starting data capture for frameset %lu of %lu", | |
331 | devc->num_frames + 1, devc->limit_frames); | |
332 | ||
333 | switch (devc->model->series->protocol) { | |
334 | case PROTOCOL_V1: | |
335 | rigol_ds_set_wait_event(devc, WAIT_TRIGGER); | |
336 | break; | |
337 | case PROTOCOL_V2: | |
338 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
339 | if (rigol_ds_config_set(sdi, ":WAV:POIN:MODE NORMAL") != SR_OK) | |
340 | return SR_ERR; | |
341 | rigol_ds_set_wait_event(devc, WAIT_TRIGGER); | |
342 | } else { | |
343 | if (rigol_ds_config_set(sdi, ":STOP") != SR_OK) | |
344 | return SR_ERR; | |
345 | if (rigol_ds_config_set(sdi, ":WAV:POIN:MODE RAW") != SR_OK) | |
346 | return SR_ERR; | |
347 | if (sr_scpi_get_string(sdi->conn, ":TRIG:MODE?", &trig_mode) != SR_OK) | |
348 | return SR_ERR; | |
349 | if (rigol_ds_config_set(sdi, ":TRIG:%s:SWE SING", trig_mode) != SR_OK) | |
350 | return SR_ERR; | |
351 | if (rigol_ds_config_set(sdi, ":RUN") != SR_OK) | |
352 | return SR_ERR; | |
353 | rigol_ds_set_wait_event(devc, WAIT_STOP); | |
354 | } | |
355 | break; | |
356 | case PROTOCOL_V3: | |
357 | case PROTOCOL_V4: | |
358 | if (rigol_ds_config_set(sdi, ":WAV:FORM BYTE") != SR_OK) | |
359 | return SR_ERR; | |
360 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
361 | if (rigol_ds_config_set(sdi, ":WAV:MODE NORM") != SR_OK) | |
362 | return SR_ERR; | |
363 | devc->analog_frame_size = devc->model->series->live_samples; | |
364 | devc->digital_frame_size = devc->model->series->live_samples; | |
365 | rigol_ds_set_wait_event(devc, WAIT_TRIGGER); | |
366 | } else { | |
367 | if (devc->model->series->protocol == PROTOCOL_V3) { | |
368 | if (rigol_ds_config_set(sdi, ":WAV:MODE RAW") != SR_OK) | |
369 | return SR_ERR; | |
370 | } else if (devc->model->series->protocol == PROTOCOL_V4) { | |
371 | num_channels = 0; | |
372 | ||
373 | /* Channels 3 and 4 are multiplexed with D0-7 and D8-15 */ | |
374 | for (i = 0; i < devc->model->analog_channels; i++) { | |
375 | if (devc->analog_channels[i]) { | |
376 | num_channels++; | |
377 | } else if (i >= 2 && devc->model->has_digital) { | |
378 | for (j = 0; j < 8; j++) { | |
379 | if (devc->digital_channels[8 * (i - 2) + j]) { | |
380 | num_channels++; | |
381 | break; | |
382 | } | |
383 | } | |
384 | } | |
385 | } | |
386 | ||
387 | devc->analog_frame_size = devc->digital_frame_size = | |
388 | num_channels == 1 ? | |
389 | devc->model->series->buffer_samples : | |
390 | num_channels == 2 ? | |
391 | devc->model->series->buffer_samples / 2 : | |
392 | devc->model->series->buffer_samples / 4; | |
393 | } | |
394 | ||
395 | if (rigol_ds_config_set(sdi, ":SING") != SR_OK) | |
396 | return SR_ERR; | |
397 | rigol_ds_set_wait_event(devc, WAIT_STOP); | |
398 | } | |
399 | break; | |
400 | } | |
401 | ||
402 | return SR_OK; | |
403 | } | |
404 | ||
405 | /* Start reading data from the current channel */ | |
406 | SR_PRIV int rigol_ds_channel_start(const struct sr_dev_inst *sdi) | |
407 | { | |
408 | struct dev_context *devc; | |
409 | struct sr_channel *ch; | |
410 | ||
411 | if (!(devc = sdi->priv)) | |
412 | return SR_ERR; | |
413 | ||
414 | ch = devc->channel_entry->data; | |
415 | ||
416 | sr_dbg("Starting reading data from channel %d", ch->index + 1); | |
417 | ||
418 | switch (devc->model->series->protocol) | |
419 | { | |
420 | case PROTOCOL_V1: | |
421 | case PROTOCOL_V2: | |
422 | if (ch->type == SR_CHANNEL_LOGIC) { | |
423 | if (sr_scpi_send(sdi->conn, ":WAV:DATA? DIG") != SR_OK) | |
424 | return SR_ERR; | |
425 | } else { | |
426 | if (sr_scpi_send(sdi->conn, ":WAV:DATA? CHAN%d", | |
427 | ch->index + 1) != SR_OK) | |
428 | return SR_ERR; | |
429 | } | |
430 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
431 | break; | |
432 | case PROTOCOL_V3: | |
433 | if (rigol_ds_config_set(sdi, ":WAV:SOUR CHAN%d", | |
434 | ch->index + 1) != SR_OK) | |
435 | return SR_ERR; | |
436 | if (devc->data_source != DATA_SOURCE_LIVE) { | |
437 | if (rigol_ds_config_set(sdi, ":WAV:RES") != SR_OK) | |
438 | return SR_ERR; | |
439 | if (rigol_ds_config_set(sdi, ":WAV:BEG") != SR_OK) | |
440 | return SR_ERR; | |
441 | } | |
442 | break; | |
443 | case PROTOCOL_V4: | |
444 | if (ch->type == SR_CHANNEL_ANALOG) { | |
445 | if (rigol_ds_config_set(sdi, ":WAV:SOUR CHAN%d", | |
446 | ch->index + 1) != SR_OK) | |
447 | return SR_ERR; | |
448 | } else { | |
449 | if (rigol_ds_config_set(sdi, ":WAV:SOUR D%d", | |
450 | ch->index) != SR_OK) | |
451 | return SR_ERR; | |
452 | } | |
453 | ||
454 | if (rigol_ds_config_set(sdi, | |
455 | devc->data_source == DATA_SOURCE_LIVE ? | |
456 | ":WAV:MODE NORM" :":WAV:MODE RAW") != SR_OK) | |
457 | return SR_ERR; | |
458 | break; | |
459 | } | |
460 | ||
461 | if (devc->model->series->protocol >= PROTOCOL_V3 && | |
462 | ch->type == SR_CHANNEL_ANALOG) { | |
463 | /* Vertical reference. */ | |
464 | if (sr_scpi_get_int(sdi->conn, ":WAV:YREF?", | |
465 | &devc->vert_reference[ch->index]) != SR_OK) | |
466 | return SR_ERR; | |
467 | } | |
468 | ||
469 | rigol_ds_set_wait_event(devc, WAIT_BLOCK); | |
470 | ||
471 | devc->num_channel_bytes = 0; | |
472 | devc->num_header_bytes = 0; | |
473 | devc->num_block_bytes = 0; | |
474 | ||
475 | return SR_OK; | |
476 | } | |
477 | ||
478 | /* Read the header of a data block */ | |
479 | static int rigol_ds_read_header(struct sr_dev_inst *sdi) | |
480 | { | |
481 | struct sr_scpi_dev_inst *scpi = sdi->conn; | |
482 | struct dev_context *devc = sdi->priv; | |
483 | char *buf = (char *) devc->buffer; | |
484 | size_t header_length; | |
485 | int ret; | |
486 | ||
487 | /* Try to read the hashsign and length digit. */ | |
488 | if (devc->num_header_bytes < 2) { | |
489 | ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes, | |
490 | 2 - devc->num_header_bytes); | |
491 | if (ret < 0) { | |
492 | sr_err("Read error while reading data header."); | |
493 | return SR_ERR; | |
494 | } | |
495 | devc->num_header_bytes += ret; | |
496 | } | |
497 | ||
498 | if (devc->num_header_bytes < 2) | |
499 | return 0; | |
500 | ||
501 | if (buf[0] != '#' || !isdigit(buf[1]) || buf[1] == '0') { | |
502 | sr_err("Received invalid data block header '%c%c'.", buf[0], buf[1]); | |
503 | return SR_ERR; | |
504 | } | |
505 | ||
506 | header_length = 2 + buf[1] - '0'; | |
507 | ||
508 | /* Try to read the length. */ | |
509 | if (devc->num_header_bytes < header_length) { | |
510 | ret = sr_scpi_read_data(scpi, buf + devc->num_header_bytes, | |
511 | header_length - devc->num_header_bytes); | |
512 | if (ret < 0) { | |
513 | sr_err("Read error while reading data header."); | |
514 | return SR_ERR; | |
515 | } | |
516 | devc->num_header_bytes += ret; | |
517 | } | |
518 | ||
519 | if (devc->num_header_bytes < header_length) | |
520 | return 0; | |
521 | ||
522 | /* Read the data length. */ | |
523 | buf[header_length] = '\0'; | |
524 | ||
525 | if (parse_int(buf + 2, &ret) != SR_OK) { | |
526 | sr_err("Received invalid data block length '%s'.", buf + 2); | |
527 | return -1; | |
528 | } | |
529 | ||
530 | sr_dbg("Received data block header: '%s' -> block length %d", buf, ret); | |
531 | ||
532 | return ret; | |
533 | } | |
534 | ||
535 | SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data) | |
536 | { | |
537 | struct sr_dev_inst *sdi; | |
538 | struct sr_scpi_dev_inst *scpi; | |
539 | struct dev_context *devc; | |
540 | struct sr_datafeed_packet packet; | |
541 | struct sr_datafeed_analog analog; | |
542 | struct sr_datafeed_logic logic; | |
543 | double vdiv, offset; | |
544 | int len, i, vref; | |
545 | struct sr_channel *ch; | |
546 | gsize expected_data_bytes; | |
547 | ||
548 | (void)fd; | |
549 | ||
550 | if (!(sdi = cb_data)) | |
551 | return TRUE; | |
552 | ||
553 | if (!(devc = sdi->priv)) | |
554 | return TRUE; | |
555 | ||
556 | scpi = sdi->conn; | |
557 | ||
558 | if (revents == G_IO_IN || revents == 0) { | |
559 | switch(devc->wait_event) { | |
560 | case WAIT_NONE: | |
561 | break; | |
562 | case WAIT_TRIGGER: | |
563 | if (rigol_ds_trigger_wait(sdi) != SR_OK) | |
564 | return TRUE; | |
565 | if (rigol_ds_channel_start(sdi) != SR_OK) | |
566 | return TRUE; | |
567 | return TRUE; | |
568 | case WAIT_BLOCK: | |
569 | if (rigol_ds_block_wait(sdi) != SR_OK) | |
570 | return TRUE; | |
571 | break; | |
572 | case WAIT_STOP: | |
573 | if (rigol_ds_stop_wait(sdi) != SR_OK) | |
574 | return TRUE; | |
575 | if (rigol_ds_check_stop(sdi) != SR_OK) | |
576 | return TRUE; | |
577 | if (rigol_ds_channel_start(sdi) != SR_OK) | |
578 | return TRUE; | |
579 | return TRUE; | |
580 | default: | |
581 | sr_err("BUG: Unknown event target encountered"); | |
582 | break; | |
583 | } | |
584 | ||
585 | ch = devc->channel_entry->data; | |
586 | ||
587 | expected_data_bytes = ch->type == SR_CHANNEL_ANALOG ? | |
588 | devc->analog_frame_size : devc->digital_frame_size; | |
589 | ||
590 | if (devc->num_block_bytes == 0) { | |
591 | if (devc->model->series->protocol >= PROTOCOL_V4) { | |
592 | if (sr_scpi_send(sdi->conn, ":WAV:START %d", | |
593 | devc->num_channel_bytes + 1) != SR_OK) | |
594 | return TRUE; | |
595 | if (sr_scpi_send(sdi->conn, ":WAV:STOP %d", | |
596 | MIN(devc->num_channel_bytes + ACQ_BLOCK_SIZE, | |
597 | devc->analog_frame_size)) != SR_OK) | |
598 | return TRUE; | |
599 | } | |
600 | ||
601 | if (devc->model->series->protocol >= PROTOCOL_V3) | |
602 | if (sr_scpi_send(sdi->conn, ":WAV:DATA?") != SR_OK) | |
603 | return TRUE; | |
604 | ||
605 | if (sr_scpi_read_begin(scpi) != SR_OK) | |
606 | return TRUE; | |
607 | ||
608 | if (devc->format == FORMAT_IEEE488_2) { | |
609 | sr_dbg("New block header expected"); | |
610 | len = rigol_ds_read_header(sdi); | |
611 | if (len == 0) | |
612 | /* Still reading the header. */ | |
613 | return TRUE; | |
614 | if (len == -1) { | |
615 | sr_err("Read error, aborting capture."); | |
616 | packet.type = SR_DF_FRAME_END; | |
617 | sr_session_send(cb_data, &packet); | |
618 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
619 | return TRUE; | |
620 | } | |
621 | /* At slow timebases in live capture the DS2072 | |
622 | * sometimes returns "short" data blocks, with | |
623 | * apparently no way to get the rest of the data. | |
624 | * Discard these, the complete data block will | |
625 | * appear eventually. | |
626 | */ | |
627 | if (devc->data_source == DATA_SOURCE_LIVE | |
628 | && (unsigned)len < expected_data_bytes) { | |
629 | sr_dbg("Discarding short data block"); | |
630 | sr_scpi_read_data(scpi, (char *)devc->buffer, len + 1); | |
631 | return TRUE; | |
632 | } | |
633 | devc->num_block_bytes = len; | |
634 | } else { | |
635 | devc->num_block_bytes = expected_data_bytes; | |
636 | } | |
637 | devc->num_block_read = 0; | |
638 | } | |
639 | ||
640 | len = devc->num_block_bytes - devc->num_block_read; | |
641 | if (len > ACQ_BUFFER_SIZE) | |
642 | len = ACQ_BUFFER_SIZE; | |
643 | sr_dbg("Requesting read of %d bytes", len); | |
644 | ||
645 | len = sr_scpi_read_data(scpi, (char *)devc->buffer, len); | |
646 | ||
647 | if (len == -1) { | |
648 | sr_err("Read error, aborting capture."); | |
649 | packet.type = SR_DF_FRAME_END; | |
650 | sr_session_send(cb_data, &packet); | |
651 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
652 | return TRUE; | |
653 | } | |
654 | ||
655 | sr_dbg("Received %d bytes.", len); | |
656 | ||
657 | devc->num_block_read += len; | |
658 | ||
659 | if (ch->type == SR_CHANNEL_ANALOG) { | |
660 | vref = devc->vert_reference[ch->index]; | |
661 | vdiv = devc->vdiv[ch->index] / 25.6; | |
662 | offset = devc->vert_offset[ch->index]; | |
663 | if (devc->model->series->protocol >= PROTOCOL_V3) | |
664 | for (i = 0; i < len; i++) | |
665 | devc->data[i] = ((int)devc->buffer[i] - vref) * vdiv - offset; | |
666 | else | |
667 | for (i = 0; i < len; i++) | |
668 | devc->data[i] = (128 - devc->buffer[i]) * vdiv - offset; | |
669 | analog.channels = g_slist_append(NULL, ch); | |
670 | analog.num_samples = len; | |
671 | analog.data = devc->data; | |
672 | analog.mq = SR_MQ_VOLTAGE; | |
673 | analog.unit = SR_UNIT_VOLT; | |
674 | analog.mqflags = 0; | |
675 | packet.type = SR_DF_ANALOG; | |
676 | packet.payload = &analog; | |
677 | sr_session_send(cb_data, &packet); | |
678 | g_slist_free(analog.channels); | |
679 | } else { | |
680 | logic.length = len; | |
681 | // TODO: For the MSO1000Z series, we need a way to express that | |
682 | // this data is in fact just for a single channel, with the valid | |
683 | // data for that channel in the LSB of each byte. | |
684 | logic.unitsize = devc->model->series->protocol == PROTOCOL_V4 ? 1 : 2; | |
685 | logic.data = devc->buffer; | |
686 | packet.type = SR_DF_LOGIC; | |
687 | packet.payload = &logic; | |
688 | sr_session_send(cb_data, &packet); | |
689 | } | |
690 | ||
691 | if (devc->num_block_read == devc->num_block_bytes) { | |
692 | sr_dbg("Block has been completed"); | |
693 | if (devc->model->series->protocol >= PROTOCOL_V3) { | |
694 | /* Discard the terminating linefeed */ | |
695 | sr_scpi_read_data(scpi, (char *)devc->buffer, 1); | |
696 | } | |
697 | if (devc->format == FORMAT_IEEE488_2) { | |
698 | /* Prepare for possible next block */ | |
699 | devc->num_header_bytes = 0; | |
700 | devc->num_block_bytes = 0; | |
701 | if (devc->data_source != DATA_SOURCE_LIVE) | |
702 | rigol_ds_set_wait_event(devc, WAIT_BLOCK); | |
703 | } | |
704 | if (!sr_scpi_read_complete(scpi)) { | |
705 | sr_err("Read should have been completed"); | |
706 | packet.type = SR_DF_FRAME_END; | |
707 | sr_session_send(cb_data, &packet); | |
708 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
709 | return TRUE; | |
710 | } | |
711 | devc->num_block_read = 0; | |
712 | } else { | |
713 | sr_dbg("%d of %d block bytes read", devc->num_block_read, devc->num_block_bytes); | |
714 | } | |
715 | ||
716 | devc->num_channel_bytes += len; | |
717 | ||
718 | if (devc->num_channel_bytes < expected_data_bytes) | |
719 | /* Don't have the full data for this channel yet, re-run. */ | |
720 | return TRUE; | |
721 | ||
722 | /* End of data for this channel. */ | |
723 | if (devc->model->series->protocol == PROTOCOL_V3) { | |
724 | /* Signal end of data download to scope */ | |
725 | if (devc->data_source != DATA_SOURCE_LIVE) | |
726 | /* | |
727 | * This causes a query error, without it switching | |
728 | * to the next channel causes an error. Fun with | |
729 | * firmware... | |
730 | */ | |
731 | rigol_ds_config_set(sdi, ":WAV:END"); | |
732 | } | |
733 | ||
734 | if (devc->channel_entry->next) { | |
735 | /* We got the frame for this channel, now get the next channel. */ | |
736 | devc->channel_entry = devc->channel_entry->next; | |
737 | rigol_ds_channel_start(sdi); | |
738 | } else { | |
739 | /* Done with this frame. */ | |
740 | packet.type = SR_DF_FRAME_END; | |
741 | sr_session_send(cb_data, &packet); | |
742 | ||
743 | if (++devc->num_frames == devc->limit_frames) { | |
744 | /* Last frame, stop capture. */ | |
745 | sdi->driver->dev_acquisition_stop(sdi, cb_data); | |
746 | } else { | |
747 | /* Get the next frame, starting with the first channel. */ | |
748 | devc->channel_entry = devc->enabled_channels; | |
749 | ||
750 | rigol_ds_capture_start(sdi); | |
751 | ||
752 | /* Start of next frame. */ | |
753 | packet.type = SR_DF_FRAME_BEGIN; | |
754 | sr_session_send(cb_data, &packet); | |
755 | } | |
756 | } | |
757 | } | |
758 | ||
759 | return TRUE; | |
760 | } | |
761 | ||
762 | SR_PRIV int rigol_ds_get_dev_cfg(const struct sr_dev_inst *sdi) | |
763 | { | |
764 | struct dev_context *devc; | |
765 | char *cmd; | |
766 | unsigned int i; | |
767 | int res; | |
768 | ||
769 | devc = sdi->priv; | |
770 | ||
771 | /* Analog channel state. */ | |
772 | for (i = 0; i < devc->model->analog_channels; i++) { | |
773 | cmd = g_strdup_printf(":CHAN%d:DISP?", i + 1); | |
774 | res = sr_scpi_get_bool(sdi->conn, cmd, &devc->analog_channels[i]); | |
775 | g_free(cmd); | |
776 | if (res != SR_OK) | |
777 | return SR_ERR; | |
778 | } | |
779 | sr_dbg("Current analog channel state:"); | |
780 | for (i = 0; i < devc->model->analog_channels; i++) | |
781 | sr_dbg("CH%d %s", i + 1, devc->analog_channels[i] ? "on" : "off"); | |
782 | ||
783 | /* Digital channel state. */ | |
784 | if (devc->model->has_digital) { | |
785 | if (sr_scpi_get_bool(sdi->conn, | |
786 | devc->model->series->protocol >= PROTOCOL_V4 ? | |
787 | ":LA:STAT?" : ":LA:DISP?", | |
788 | &devc->la_enabled) != SR_OK) | |
789 | return SR_ERR; | |
790 | sr_dbg("Logic analyzer %s, current digital channel state:", | |
791 | devc->la_enabled ? "enabled" : "disabled"); | |
792 | for (i = 0; i < ARRAY_SIZE(devc->digital_channels); i++) { | |
793 | cmd = g_strdup_printf( | |
794 | devc->model->series->protocol >= PROTOCOL_V4 ? | |
795 | ":LA:DIG%d:DISP?" : ":DIG%d:TURN?", i); | |
796 | res = sr_scpi_get_bool(sdi->conn, cmd, &devc->digital_channels[i]); | |
797 | g_free(cmd); | |
798 | if (res != SR_OK) | |
799 | return SR_ERR; | |
800 | sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "on" : "off"); | |
801 | } | |
802 | } | |
803 | ||
804 | /* Timebase. */ | |
805 | if (sr_scpi_get_float(sdi->conn, ":TIM:SCAL?", &devc->timebase) != SR_OK) | |
806 | return SR_ERR; | |
807 | sr_dbg("Current timebase %g", devc->timebase); | |
808 | ||
809 | /* Vertical gain. */ | |
810 | for (i = 0; i < devc->model->analog_channels; i++) { | |
811 | cmd = g_strdup_printf(":CHAN%d:SCAL?", i + 1); | |
812 | res = sr_scpi_get_float(sdi->conn, cmd, &devc->vdiv[i]); | |
813 | g_free(cmd); | |
814 | if (res != SR_OK) | |
815 | return SR_ERR; | |
816 | } | |
817 | sr_dbg("Current vertical gain:"); | |
818 | for (i = 0; i < devc->model->analog_channels; i++) | |
819 | sr_dbg("CH%d %g", i + 1, devc->vdiv[i]); | |
820 | ||
821 | /* Vertical offset. */ | |
822 | for (i = 0; i < devc->model->analog_channels; i++) { | |
823 | cmd = g_strdup_printf(":CHAN%d:OFFS?", i + 1); | |
824 | res = sr_scpi_get_float(sdi->conn, cmd, &devc->vert_offset[i]); | |
825 | g_free(cmd); | |
826 | if (res != SR_OK) | |
827 | return SR_ERR; | |
828 | } | |
829 | sr_dbg("Current vertical offset:"); | |
830 | for (i = 0; i < devc->model->analog_channels; i++) | |
831 | sr_dbg("CH%d %g", i + 1, devc->vert_offset[i]); | |
832 | ||
833 | /* Coupling. */ | |
834 | for (i = 0; i < devc->model->analog_channels; i++) { | |
835 | cmd = g_strdup_printf(":CHAN%d:COUP?", i + 1); | |
836 | res = sr_scpi_get_string(sdi->conn, cmd, &devc->coupling[i]); | |
837 | g_free(cmd); | |
838 | if (res != SR_OK) | |
839 | return SR_ERR; | |
840 | } | |
841 | sr_dbg("Current coupling:"); | |
842 | for (i = 0; i < devc->model->analog_channels; i++) | |
843 | sr_dbg("CH%d %s", i + 1, devc->coupling[i]); | |
844 | ||
845 | /* Trigger source. */ | |
846 | if (sr_scpi_get_string(sdi->conn, ":TRIG:EDGE:SOUR?", &devc->trigger_source) != SR_OK) | |
847 | return SR_ERR; | |
848 | sr_dbg("Current trigger source %s", devc->trigger_source); | |
849 | ||
850 | /* Horizontal trigger position. */ | |
851 | if (sr_scpi_get_float(sdi->conn, ":TIM:OFFS?", &devc->horiz_triggerpos) != SR_OK) | |
852 | return SR_ERR; | |
853 | sr_dbg("Current horizontal trigger position %g", devc->horiz_triggerpos); | |
854 | ||
855 | /* Trigger slope. */ | |
856 | if (sr_scpi_get_string(sdi->conn, ":TRIG:EDGE:SLOP?", &devc->trigger_slope) != SR_OK) | |
857 | return SR_ERR; | |
858 | sr_dbg("Current trigger slope %s", devc->trigger_slope); | |
859 | ||
860 | return SR_OK; | |
861 | } |