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f4816ac6 ML |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Martin Ling <martin-git@earth.li> | |
88e429c9 | 5 | * Copyright (C) 2013 Bert Vermeulen <bert@biot.com> |
bafd4890 | 6 | * Copyright (C) 2013 Mathias Grimmberger <mgri@zaphod.sax.de> |
f4816ac6 ML |
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> | |
e0b7d23c ML |
23 | #include <stdarg.h> |
24 | #include <unistd.h> | |
25 | #include <errno.h> | |
a3df166f | 26 | #include <string.h> |
254dd102 | 27 | #include <math.h> |
bafd4890 ML |
28 | #include <ctype.h> |
29 | #include <time.h> | |
f4816ac6 ML |
30 | #include <glib.h> |
31 | #include "libsigrok.h" | |
32 | #include "libsigrok-internal.h" | |
33 | #include "protocol.h" | |
34 | ||
bafd4890 ML |
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 get_cfg(const struct sr_dev_inst *sdi, char *cmd, char *reply, size_t maxlen); | |
68 | static int get_cfg_int(const struct sr_dev_inst *sdi, char *cmd, int *i); | |
69 | ||
70 | static int parse_int(const char *str, int *ret) | |
71 | { | |
72 | char *e; | |
73 | long tmp; | |
74 | ||
75 | errno = 0; | |
76 | tmp = strtol(str, &e, 10); | |
77 | if (e == str || *e != '\0') { | |
78 | sr_dbg("Failed to parse integer: '%s'", str); | |
79 | return SR_ERR; | |
80 | } | |
81 | if (errno) { | |
82 | sr_dbg("Failed to parse integer: '%s', numerical overflow", str); | |
83 | return SR_ERR; | |
84 | } | |
85 | if (tmp > INT_MAX || tmp < INT_MIN) { | |
86 | sr_dbg("Failed to parse integer: '%s', value to large/small", str); | |
87 | return SR_ERR; | |
88 | } | |
89 | ||
90 | *ret = (int)tmp; | |
91 | return SR_OK; | |
92 | } | |
93 | ||
babab622 ML |
94 | /* Set the next event to wait for in rigol_ds_receive */ |
95 | static void rigol_ds_set_wait_event(struct dev_context *devc, enum wait_events event) | |
96 | { | |
97 | if (event == WAIT_STOP) | |
98 | devc->wait_status = 2; | |
99 | else | |
100 | devc->wait_status = 1; | |
101 | devc->wait_event = event; | |
102 | } | |
103 | ||
bafd4890 | 104 | /* |
babab622 ML |
105 | * Waiting for a event will return a timeout after 2 to 3 seconds in order |
106 | * to not block the application. | |
bafd4890 | 107 | */ |
babab622 | 108 | static int rigol_ds_event_wait(const struct sr_dev_inst *sdi, char status1, char status2) |
bafd4890 ML |
109 | { |
110 | char buf[20]; | |
111 | struct dev_context *devc; | |
112 | time_t start; | |
113 | ||
114 | if (!(devc = sdi->priv)) | |
115 | return SR_ERR; | |
116 | ||
117 | start = time(NULL); | |
118 | ||
119 | /* | |
120 | * Trigger status may return: | |
babab622 ML |
121 | * "TD" or "T'D" - triggered |
122 | * "AUTO" - autotriggered | |
123 | * "RUN" - running | |
124 | * "WAIT" - waiting for trigger | |
125 | * "STOP" - stopped | |
bafd4890 ML |
126 | */ |
127 | ||
babab622 | 128 | if (devc->wait_status == 1) { |
bafd4890 ML |
129 | do { |
130 | if (time(NULL) - start >= 3) { | |
131 | sr_dbg("Timeout waiting for trigger"); | |
132 | return SR_ERR_TIMEOUT; | |
133 | } | |
134 | ||
135 | if (get_cfg(sdi, ":TRIG:STAT?", buf, sizeof(buf)) != SR_OK) | |
136 | return SR_ERR; | |
babab622 | 137 | } while (buf[0] == status1 || buf[0] == status2); |
bafd4890 | 138 | |
babab622 | 139 | devc->wait_status = 2; |
bafd4890 | 140 | } |
babab622 | 141 | if (devc->wait_status == 2) { |
bafd4890 ML |
142 | do { |
143 | if (time(NULL) - start >= 3) { | |
144 | sr_dbg("Timeout waiting for trigger"); | |
145 | return SR_ERR_TIMEOUT; | |
146 | } | |
147 | ||
148 | if (get_cfg(sdi, ":TRIG:STAT?", buf, sizeof(buf)) != SR_OK) | |
149 | return SR_ERR; | |
babab622 | 150 | } while (buf[0] != status1 && buf[0] != status2); |
bafd4890 | 151 | |
babab622 | 152 | rigol_ds_set_wait_event(devc, WAIT_NONE); |
bafd4890 ML |
153 | } |
154 | ||
155 | return SR_OK; | |
156 | } | |
157 | ||
158 | /* | |
babab622 ML |
159 | * For live capture we need to wait for a new trigger event to ensure that |
160 | * sample data is not returned twice. | |
bafd4890 ML |
161 | * |
162 | * Unfortunately this will never really work because for sufficiently fast | |
babab622 | 163 | * timebases and trigger rates it just can't catch the status changes. |
bafd4890 ML |
164 | * |
165 | * What would be needed is a trigger event register with autoreset like the | |
166 | * Agilents have. The Rigols don't seem to have anything like this. | |
167 | * | |
168 | * The workaround is to only wait for the trigger when the timebase is slow | |
169 | * enough. Of course this means that for faster timebases sample data can be | |
babab622 ML |
170 | * returned multiple times, this effect is mitigated somewhat by sleeping |
171 | * for about one sweep time in that case. | |
bafd4890 | 172 | */ |
babab622 | 173 | static int rigol_ds_trigger_wait(const struct sr_dev_inst *sdi) |
bafd4890 ML |
174 | { |
175 | struct dev_context *devc; | |
babab622 | 176 | long s; |
bafd4890 ML |
177 | |
178 | if (!(devc = sdi->priv)) | |
179 | return SR_ERR; | |
180 | ||
babab622 ML |
181 | /* |
182 | * If timebase < 50 msecs/DIV just sleep about one sweep time except | |
183 | * for really fast sweeps. | |
184 | */ | |
185 | if (devc->timebase < 0.0499) | |
186 | { | |
187 | if (devc->timebase > 0.99e-6) { | |
188 | /* | |
189 | * Timebase * num hor. divs * 85(%) * 1e6(usecs) / 100 | |
190 | * -> 85 percent of sweep time | |
191 | */ | |
192 | s = (devc->timebase * devc->model->num_horizontal_divs | |
193 | * 85e6) / 100L; | |
194 | sr_spew("Sleeping for %ld usecs instead of trigger-wait", s); | |
195 | g_usleep(s); | |
196 | } | |
197 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
198 | return SR_OK; | |
199 | } else { | |
200 | return rigol_ds_event_wait(sdi, 'T', 'A'); | |
201 | } | |
202 | } | |
bafd4890 | 203 | |
babab622 ML |
204 | /* Wait for scope to got to "Stop" in single shot mode */ |
205 | static int rigol_ds_stop_wait(const struct sr_dev_inst *sdi) | |
206 | { | |
207 | return rigol_ds_event_wait(sdi, 'S', 'S'); | |
208 | } | |
209 | ||
210 | /* Check that a single shot acquisition actually succeeded on the DS2000 */ | |
211 | static int rigol_ds_check_stop(const struct sr_dev_inst *sdi) | |
212 | { | |
213 | struct dev_context *devc; | |
214 | int tmp; | |
215 | ||
216 | if (!(devc = sdi->priv)) | |
bafd4890 | 217 | return SR_ERR; |
babab622 | 218 | |
17b5b202 | 219 | if (sr_scpi_send(sdi->conn, ":WAV:SOUR CHAN%d", |
0d87bd93 | 220 | devc->channel->index + 1) != SR_OK) |
babab622 ML |
221 | return SR_ERR; |
222 | /* Check that the number of samples will be accepted */ | |
17b5b202 | 223 | if (sr_scpi_send(sdi->conn, ":WAV:POIN %d;*OPC", devc->analog_frame_size) != SR_OK) |
babab622 ML |
224 | return SR_ERR; |
225 | if (get_cfg_int(sdi, "*ESR?", &tmp) != SR_OK) | |
bafd4890 | 226 | return SR_ERR; |
babab622 ML |
227 | /* |
228 | * If we get an "Execution error" the scope went from "Single" to | |
229 | * "Stop" without actually triggering. There is no waveform | |
230 | * displayed and trying to download one will fail - the scope thinks | |
231 | * it has 1400 samples (like display memory) and the driver thinks | |
232 | * it has a different number of samples. | |
233 | * | |
234 | * In that case just try to capture something again. Might still | |
235 | * fail in interesting ways. | |
236 | * | |
237 | * Ain't firmware fun? | |
238 | */ | |
239 | if (tmp & 0x10) { | |
240 | sr_warn("Single shot acquisition failed, retrying..."); | |
241 | /* Sleep a bit, otherwise the single shot will often fail */ | |
242 | g_usleep(500000); | |
17b5b202 | 243 | sr_scpi_send(sdi->conn, ":SING"); |
babab622 | 244 | rigol_ds_set_wait_event(devc, WAIT_STOP); |
bafd4890 | 245 | return SR_ERR; |
babab622 | 246 | } |
bafd4890 | 247 | |
babab622 ML |
248 | return SR_OK; |
249 | } | |
bafd4890 | 250 | |
babab622 ML |
251 | /* Wait for enough data becoming available in scope output buffer */ |
252 | static int rigol_ds_block_wait(const struct sr_dev_inst *sdi) | |
253 | { | |
254 | char buf[30]; | |
255 | struct dev_context *devc; | |
256 | time_t start; | |
257 | int len; | |
258 | ||
259 | if (!(devc = sdi->priv)) | |
260 | return SR_ERR; | |
261 | ||
262 | start = time(NULL); | |
263 | ||
264 | do { | |
265 | if (time(NULL) - start >= 3) { | |
266 | sr_dbg("Timeout waiting for data block"); | |
267 | return SR_ERR_TIMEOUT; | |
268 | } | |
269 | ||
270 | /* | |
271 | * The scope copies data really slowly from sample | |
272 | * memory to its output buffer, so try not to bother | |
273 | * it too much with SCPI requests but don't wait too | |
274 | * long for short sample frame sizes. | |
275 | */ | |
276 | g_usleep(devc->analog_frame_size < 15000 ? 100000 : 1000000); | |
277 | ||
278 | /* "READ,nnnn" (still working) or "IDLE,nnnn" (finished) */ | |
279 | if (get_cfg(sdi, ":WAV:STAT?", buf, sizeof(buf)) != SR_OK) | |
280 | return SR_ERR; | |
281 | ||
282 | if (parse_int(buf + 5, &len) != SR_OK) | |
283 | return SR_ERR; | |
284 | } while (buf[0] == 'R' && len < 1000000); | |
285 | ||
286 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
287 | ||
288 | return SR_OK; | |
289 | } | |
290 | ||
291 | /* Start capturing a new frameset */ | |
292 | SR_PRIV int rigol_ds_capture_start(const struct sr_dev_inst *sdi) | |
293 | { | |
294 | struct dev_context *devc; | |
295 | ||
296 | if (!(devc = sdi->priv)) | |
297 | return SR_ERR; | |
298 | ||
299 | sr_dbg("Starting data capture for frameset %lu of %lu", | |
300 | devc->num_frames + 1, devc->limit_frames); | |
301 | ||
17b5b202 | 302 | if (sr_scpi_send(sdi->conn, ":WAV:FORM BYTE") != SR_OK) |
babab622 ML |
303 | return SR_ERR; |
304 | if (devc->data_source == DATA_SOURCE_LIVE) { | |
17b5b202 | 305 | if (sr_scpi_send(sdi->conn, ":WAV:MODE NORM") != SR_OK) |
babab622 ML |
306 | return SR_ERR; |
307 | rigol_ds_set_wait_event(devc, WAIT_TRIGGER); | |
bafd4890 | 308 | } else { |
17b5b202 | 309 | if (sr_scpi_send(sdi->conn, ":WAV:MODE RAW") != SR_OK) |
babab622 | 310 | return SR_ERR; |
17b5b202 | 311 | if (sr_scpi_send(sdi->conn, ":SING", devc->analog_frame_size) != SR_OK) |
babab622 ML |
312 | return SR_ERR; |
313 | rigol_ds_set_wait_event(devc, WAIT_STOP); | |
bafd4890 ML |
314 | } |
315 | ||
316 | return SR_OK; | |
317 | } | |
318 | ||
babab622 ML |
319 | /* Start reading data from the current channel */ |
320 | SR_PRIV int rigol_ds_channel_start(const struct sr_dev_inst *sdi) | |
321 | { | |
322 | struct dev_context *devc; | |
323 | ||
324 | if (!(devc = sdi->priv)) | |
325 | return SR_ERR; | |
326 | ||
327 | sr_dbg("Starting reading data from channel %d", | |
0d87bd93 | 328 | devc->channel->index + 1); |
babab622 | 329 | |
677f85d0 | 330 | if (devc->model->protocol == PROTOCOL_LEGACY) { |
07ccb2b3 | 331 | if (devc->channel->type == SR_PROBE_LOGIC) { |
677f85d0 ML |
332 | if (sr_scpi_send(sdi->conn, ":WAV:DATA? DIG") != SR_OK) |
333 | return SR_ERR; | |
334 | } else { | |
335 | if (sr_scpi_send(sdi->conn, ":WAV:DATA? CHAN%c", | |
336 | devc->channel->name[2]) != SR_OK) | |
337 | return SR_ERR; | |
338 | } | |
339 | } else { | |
340 | if (sr_scpi_send(sdi->conn, ":WAV:SOUR CHAN%d", | |
341 | devc->channel->index + 1) != SR_OK) | |
babab622 | 342 | return SR_ERR; |
677f85d0 ML |
343 | if (devc->data_source != DATA_SOURCE_LIVE) { |
344 | if (sr_scpi_send(sdi->conn, ":WAV:RES") != SR_OK) | |
345 | return SR_ERR; | |
346 | if (sr_scpi_send(sdi->conn, ":WAV:BEG") != SR_OK) | |
347 | return SR_ERR; | |
348 | rigol_ds_set_wait_event(devc, WAIT_BLOCK); | |
349 | } else | |
350 | rigol_ds_set_wait_event(devc, WAIT_NONE); | |
351 | } | |
babab622 | 352 | |
0d87bd93 | 353 | devc->num_frame_samples = 0; |
babab622 ML |
354 | devc->num_block_bytes = 0; |
355 | ||
356 | return SR_OK; | |
357 | } | |
358 | ||
359 | /* Read the header of a data block */ | |
ae1bc1cc | 360 | static int rigol_ds_read_header(struct sr_scpi_dev_inst *scpi) |
bafd4890 ML |
361 | { |
362 | char start[3], length[10]; | |
363 | int len, tmp; | |
364 | ||
365 | /* Read the hashsign and length digit. */ | |
ae1bc1cc | 366 | tmp = sr_scpi_read(scpi, start, 2); |
bafd4890 ML |
367 | start[2] = '\0'; |
368 | if (tmp != 2) | |
369 | { | |
370 | sr_err("Failed to read first two bytes of data block header."); | |
371 | return -1; | |
372 | } | |
373 | if (start[0] != '#' || !isdigit(start[1]) || start[1] == '0') | |
374 | { | |
375 | sr_err("Received invalid data block header start '%s'.", start); | |
376 | return -1; | |
377 | } | |
378 | len = atoi(start + 1); | |
379 | ||
380 | /* Read the data length. */ | |
ae1bc1cc | 381 | tmp = sr_scpi_read(scpi, length, len); |
bafd4890 ML |
382 | length[len] = '\0'; |
383 | if (tmp != len) | |
384 | { | |
385 | sr_err("Failed to read %d bytes of data block length.", len); | |
386 | return -1; | |
387 | } | |
388 | if (parse_int(length, &len) != SR_OK) | |
389 | { | |
390 | sr_err("Received invalid data block length '%s'.", length); | |
391 | return -1; | |
392 | } | |
393 | ||
394 | sr_dbg("Received data block header: %s%s -> block length %d", start, length, len); | |
395 | ||
396 | return len; | |
397 | } | |
398 | ||
3086efdd | 399 | SR_PRIV int rigol_ds_receive(int fd, int revents, void *cb_data) |
f4816ac6 | 400 | { |
e0b7d23c | 401 | struct sr_dev_inst *sdi; |
ae1bc1cc | 402 | struct sr_scpi_dev_inst *scpi; |
f4816ac6 | 403 | struct dev_context *devc; |
e0b7d23c ML |
404 | struct sr_datafeed_packet packet; |
405 | struct sr_datafeed_analog analog; | |
6bb192bc | 406 | struct sr_datafeed_logic logic; |
254dd102 | 407 | double vdiv, offset; |
f80a0bf2 | 408 | int len, i, vref; |
6bb192bc | 409 | struct sr_probe *probe; |
f4816ac6 | 410 | |
decfe89d | 411 | (void)fd; |
9bd4c956 | 412 | |
f4816ac6 ML |
413 | if (!(sdi = cb_data)) |
414 | return TRUE; | |
415 | ||
416 | if (!(devc = sdi->priv)) | |
417 | return TRUE; | |
418 | ||
ae1bc1cc | 419 | scpi = sdi->conn; |
9bd4c956 | 420 | |
f4816ac6 | 421 | if (revents == G_IO_IN) { |
babab622 ML |
422 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { |
423 | switch(devc->wait_event) { | |
424 | case WAIT_NONE: | |
425 | break; | |
bafd4890 | 426 | |
babab622 ML |
427 | case WAIT_TRIGGER: |
428 | if (rigol_ds_trigger_wait(sdi) != SR_OK) | |
429 | return TRUE; | |
430 | if (rigol_ds_channel_start(sdi) != SR_OK) | |
431 | return TRUE; | |
432 | break; | |
433 | ||
434 | case WAIT_BLOCK: | |
435 | if (rigol_ds_block_wait(sdi) != SR_OK) | |
436 | return TRUE; | |
437 | break; | |
438 | ||
439 | case WAIT_STOP: | |
440 | if (rigol_ds_stop_wait(sdi) != SR_OK) | |
441 | return TRUE; | |
442 | if (rigol_ds_check_stop(sdi) != SR_OK) | |
443 | return TRUE; | |
444 | if (rigol_ds_channel_start(sdi) != SR_OK) | |
445 | return TRUE; | |
bafd4890 | 446 | return TRUE; |
babab622 ML |
447 | |
448 | default: | |
449 | sr_err("BUG: Unknown event target encountered"); | |
450 | } | |
f80a0bf2 ML |
451 | } |
452 | ||
453 | probe = devc->channel; | |
babab622 | 454 | |
f80a0bf2 ML |
455 | if (devc->num_block_bytes == 0) { |
456 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { | |
babab622 | 457 | sr_dbg("New block header expected"); |
17b5b202 | 458 | if (sr_scpi_send(sdi->conn, ":WAV:DATA?") != SR_OK) |
babab622 | 459 | return TRUE; |
ae1bc1cc | 460 | len = rigol_ds_read_header(scpi); |
babab622 ML |
461 | if (len == -1) |
462 | return TRUE; | |
463 | /* At slow timebases in live capture the DS2072 | |
464 | * sometimes returns "short" data blocks, with | |
465 | * apparently no way to get the rest of the data. | |
466 | * Discard these, the complete data block will | |
467 | * appear eventually. | |
468 | */ | |
469 | if (devc->data_source == DATA_SOURCE_LIVE | |
f80a0bf2 | 470 | && (unsigned)len < devc->num_frame_samples) { |
babab622 | 471 | sr_dbg("Discarding short data block"); |
ae1bc1cc | 472 | sr_scpi_read(scpi, (char *)devc->buffer, len + 1); |
babab622 ML |
473 | return TRUE; |
474 | } | |
475 | devc->num_block_bytes = len; | |
f80a0bf2 ML |
476 | } else { |
477 | devc->num_block_bytes = probe->type == SR_PROBE_ANALOG ? | |
962af1a3 ML |
478 | (devc->model->series == RIGOL_VS5000 ? |
479 | VS5000_ANALOG_LIVE_WAVEFORM_SIZE : | |
480 | DS1000_ANALOG_LIVE_WAVEFORM_SIZE) : | |
481 | DIGITAL_WAVEFORM_SIZE; | |
f80a0bf2 ML |
482 | } |
483 | devc->num_block_read = 0; | |
bafd4890 | 484 | } |
f80a0bf2 ML |
485 | |
486 | len = devc->num_block_bytes - devc->num_block_read; | |
487 | len = sr_scpi_read(scpi, (char *)devc->buffer, | |
488 | len < ACQ_BUFFER_SIZE ? len : ACQ_BUFFER_SIZE); | |
489 | ||
29d957ce | 490 | sr_dbg("Received %d bytes.", len); |
e0b7d23c ML |
491 | if (len == -1) |
492 | return TRUE; | |
75d8a4e5 | 493 | |
48460c6f ML |
494 | devc->num_block_read += len; |
495 | ||
0d87bd93 | 496 | if (devc->num_frame_samples == 0) { |
75d8a4e5 BV |
497 | /* Start of a new frame. */ |
498 | packet.type = SR_DF_FRAME_BEGIN; | |
499 | sr_session_send(sdi, &packet); | |
500 | } | |
501 | ||
6bb192bc | 502 | if (probe->type == SR_PROBE_ANALOG) { |
bafd4890 ML |
503 | vref = devc->vert_reference[probe->index]; |
504 | vdiv = devc->vdiv[probe->index] / 25.6; | |
505 | offset = devc->vert_offset[probe->index]; | |
babab622 | 506 | if (devc->model->protocol == PROTOCOL_IEEE488_2) |
bafd4890 | 507 | for (i = 0; i < len; i++) |
babab622 | 508 | devc->data[i] = ((int)devc->buffer[i] - vref) * vdiv - offset; |
bafd4890 ML |
509 | else |
510 | for (i = 0; i < len; i++) | |
babab622 | 511 | devc->data[i] = (128 - devc->buffer[i]) * vdiv - offset; |
6bb192bc ML |
512 | analog.probes = g_slist_append(NULL, probe); |
513 | analog.num_samples = len; | |
babab622 | 514 | analog.data = devc->data; |
6bb192bc ML |
515 | analog.mq = SR_MQ_VOLTAGE; |
516 | analog.unit = SR_UNIT_VOLT; | |
517 | analog.mqflags = 0; | |
518 | packet.type = SR_DF_ANALOG; | |
519 | packet.payload = &analog; | |
520 | sr_session_send(cb_data, &packet); | |
521 | g_slist_free(analog.probes); | |
6bb192bc ML |
522 | } else { |
523 | logic.length = len - 10; | |
524 | logic.unitsize = 2; | |
babab622 | 525 | logic.data = devc->buffer + 10; |
6bb192bc ML |
526 | packet.type = SR_DF_LOGIC; |
527 | packet.payload = &logic; | |
528 | sr_session_send(cb_data, &packet); | |
48460c6f | 529 | } |
6bb192bc | 530 | |
48460c6f ML |
531 | if (devc->num_block_read == devc->num_block_bytes) { |
532 | sr_dbg("Block has been completed"); | |
533 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { | |
534 | /* Discard the terminating linefeed and prepare for | |
535 | possible next block */ | |
536 | sr_scpi_read(scpi, (char *)devc->buffer, 1); | |
537 | devc->num_block_bytes = 0; | |
538 | if (devc->data_source != DATA_SOURCE_LIVE) | |
539 | rigol_ds_set_wait_event(devc, WAIT_BLOCK); | |
540 | } | |
541 | devc->num_block_read = 0; | |
542 | } else { | |
543 | sr_dbg("%d of %d block bytes read", devc->num_block_read, devc->num_block_bytes); | |
ee7e9bee | 544 | } |
75d8a4e5 | 545 | |
48460c6f ML |
546 | devc->num_frame_samples += len; |
547 | ||
548 | if (devc->num_frame_samples < (probe->type == SR_PROBE_ANALOG ? | |
549 | devc->analog_frame_size : DIGITAL_WAVEFORM_SIZE)) | |
550 | /* Don't have the whole frame yet. */ | |
551 | return TRUE; | |
552 | ||
254dd102 | 553 | /* End of the frame. */ |
48460c6f | 554 | sr_dbg("Frame completed, %d samples", devc->num_frame_samples); |
254dd102 BV |
555 | packet.type = SR_DF_FRAME_END; |
556 | sr_session_send(sdi, &packet); | |
f80a0bf2 | 557 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { |
babab622 ML |
558 | /* Signal end of data download to scope */ |
559 | if (devc->data_source != DATA_SOURCE_LIVE) | |
560 | /* | |
561 | * This causes a query error, without it switching | |
562 | * to the next channel causes an error. Fun with | |
563 | * firmware... | |
564 | */ | |
17b5b202 | 565 | sr_scpi_send(sdi->conn, ":WAV:END"); |
babab622 | 566 | } |
254dd102 | 567 | |
6bb192bc | 568 | if (devc->enabled_analog_probes |
0d87bd93 | 569 | && devc->channel == devc->enabled_analog_probes->data |
6bb192bc ML |
570 | && devc->enabled_analog_probes->next != NULL) { |
571 | /* We got the frame for the first analog channel, but | |
572 | * there's a second analog channel. */ | |
0d87bd93 | 573 | devc->channel = devc->enabled_analog_probes->next->data; |
677f85d0 | 574 | rigol_ds_channel_start(sdi); |
254dd102 | 575 | } else { |
6bb192bc ML |
576 | /* Done with both analog channels in this frame. */ |
577 | if (devc->enabled_digital_probes | |
0d87bd93 | 578 | && devc->channel != devc->enabled_digital_probes->data) { |
6bb192bc | 579 | /* Now we need to get the digital data. */ |
0d87bd93 | 580 | devc->channel = devc->enabled_digital_probes->data; |
677f85d0 | 581 | rigol_ds_channel_start(sdi); |
6bb192bc ML |
582 | } else if (++devc->num_frames == devc->limit_frames) { |
583 | /* End of last frame. */ | |
1130e422 DJ |
584 | packet.type = SR_DF_END; |
585 | sr_session_send(sdi, &packet); | |
75d8a4e5 | 586 | sdi->driver->dev_acquisition_stop(sdi, cb_data); |
254dd102 | 587 | } else { |
6bb192bc | 588 | /* Get the next frame, starting with the first analog channel. */ |
677f85d0 ML |
589 | if (devc->enabled_analog_probes) |
590 | devc->channel = devc->enabled_analog_probes->data; | |
591 | else | |
592 | devc->channel = devc->enabled_digital_probes->data; | |
593 | ||
594 | if (devc->model->protocol == PROTOCOL_LEGACY) | |
595 | rigol_ds_channel_start(sdi); | |
596 | else | |
597 | rigol_ds_capture_start(sdi); | |
254dd102 | 598 | } |
75d8a4e5 | 599 | } |
f4816ac6 ML |
600 | } |
601 | ||
602 | return TRUE; | |
603 | } | |
e0b7d23c | 604 | |
bafd4890 | 605 | static int get_cfg(const struct sr_dev_inst *sdi, char *cmd, char *reply, size_t maxlen) |
254dd102 | 606 | { |
254dd102 | 607 | int len; |
bafd4890 | 608 | struct dev_context *devc = sdi->priv; |
ae1bc1cc ML |
609 | struct sr_scpi_dev_inst *scpi = sdi->conn; |
610 | char *response; | |
254dd102 | 611 | |
ae1bc1cc | 612 | if (sr_scpi_send(scpi, cmd) != SR_OK) |
254dd102 BV |
613 | return SR_ERR; |
614 | ||
ae1bc1cc | 615 | if (sr_scpi_receive(scpi, &response) != SR_OK) |
254dd102 | 616 | return SR_ERR; |
ae1bc1cc ML |
617 | |
618 | g_strlcpy(reply, response, maxlen); | |
619 | g_free(response); | |
620 | len = strlen(reply); | |
bafd4890 | 621 | |
babab622 | 622 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { |
bafd4890 ML |
623 | /* get rid of trailing linefeed */ |
624 | if (len >= 1 && reply[len-1] == '\n') | |
625 | reply[len-1] = '\0'; | |
626 | } | |
627 | ||
254dd102 BV |
628 | sr_spew("Received '%s'.", reply); |
629 | ||
630 | return SR_OK; | |
631 | } | |
632 | ||
bafd4890 ML |
633 | static int get_cfg_int(const struct sr_dev_inst *sdi, char *cmd, int *i) |
634 | { | |
635 | char buf[32]; | |
636 | ||
637 | if (get_cfg(sdi, cmd, buf, sizeof(buf)) != SR_OK) | |
638 | return SR_ERR; | |
639 | ||
640 | if (parse_int(buf, i) != SR_OK) | |
641 | return SR_ERR; | |
642 | ||
643 | return SR_OK; | |
644 | } | |
645 | ||
254dd102 BV |
646 | static int get_cfg_float(const struct sr_dev_inst *sdi, char *cmd, float *f) |
647 | { | |
bafd4890 | 648 | char buf[32], *e; |
254dd102 | 649 | |
bafd4890 | 650 | if (get_cfg(sdi, cmd, buf, sizeof(buf)) != SR_OK) |
254dd102 BV |
651 | return SR_ERR; |
652 | *f = strtof(buf, &e); | |
169dbe85 | 653 | if (e == buf || (fpclassify(*f) & (FP_ZERO | FP_NORMAL)) == 0) { |
254dd102 BV |
654 | sr_dbg("failed to parse response to '%s': '%s'", cmd, buf); |
655 | return SR_ERR; | |
656 | } | |
657 | ||
658 | return SR_OK; | |
659 | } | |
660 | ||
661 | static int get_cfg_string(const struct sr_dev_inst *sdi, char *cmd, char **buf) | |
662 | { | |
254dd102 | 663 | if (!(*buf = g_try_malloc0(256))) |
169dbe85 | 664 | return SR_ERR_MALLOC; |
254dd102 | 665 | |
bafd4890 | 666 | if (get_cfg(sdi, cmd, *buf, 256) != SR_OK) |
254dd102 BV |
667 | return SR_ERR; |
668 | ||
669 | return SR_OK; | |
670 | } | |
671 | ||
3086efdd | 672 | SR_PRIV int rigol_ds_get_dev_cfg(const struct sr_dev_inst *sdi) |
254dd102 BV |
673 | { |
674 | struct dev_context *devc; | |
6bb192bc ML |
675 | char *t_s, *cmd; |
676 | int i, res; | |
254dd102 BV |
677 | |
678 | devc = sdi->priv; | |
679 | ||
6bb192bc | 680 | /* Analog channel state. */ |
254dd102 BV |
681 | if (get_cfg_string(sdi, ":CHAN1:DISP?", &t_s) != SR_OK) |
682 | return SR_ERR; | |
bafd4890 | 683 | devc->analog_channels[0] = !strcmp(t_s, "ON") || !strcmp(t_s, "1"); |
254dd102 BV |
684 | g_free(t_s); |
685 | if (get_cfg_string(sdi, ":CHAN2:DISP?", &t_s) != SR_OK) | |
686 | return SR_ERR; | |
bafd4890 | 687 | devc->analog_channels[1] = !strcmp(t_s, "ON") || !strcmp(t_s, "1"); |
254dd102 | 688 | g_free(t_s); |
6bb192bc ML |
689 | sr_dbg("Current analog channel state CH1 %s CH2 %s", |
690 | devc->analog_channels[0] ? "on" : "off", | |
691 | devc->analog_channels[1] ? "on" : "off"); | |
692 | ||
693 | /* Digital channel state. */ | |
bafd4890 | 694 | if (devc->model->has_digital) { |
6bb192bc ML |
695 | sr_dbg("Current digital channel state:"); |
696 | for (i = 0; i < 16; i++) { | |
697 | cmd = g_strdup_printf(":DIG%d:TURN?", i); | |
698 | res = get_cfg_string(sdi, cmd, &t_s); | |
699 | g_free(cmd); | |
700 | if (res != SR_OK) | |
701 | return SR_ERR; | |
702 | devc->digital_channels[i] = !strcmp(t_s, "ON") ? TRUE : FALSE; | |
703 | g_free(t_s); | |
704 | sr_dbg("D%d: %s", i, devc->digital_channels[i] ? "on" : "off"); | |
705 | } | |
706 | } | |
254dd102 BV |
707 | |
708 | /* Timebase. */ | |
709 | if (get_cfg_float(sdi, ":TIM:SCAL?", &devc->timebase) != SR_OK) | |
710 | return SR_ERR; | |
bafd4890 | 711 | sr_dbg("Current timebase %g", devc->timebase); |
254dd102 BV |
712 | |
713 | /* Vertical gain. */ | |
714 | if (get_cfg_float(sdi, ":CHAN1:SCAL?", &devc->vdiv[0]) != SR_OK) | |
715 | return SR_ERR; | |
716 | if (get_cfg_float(sdi, ":CHAN2:SCAL?", &devc->vdiv[1]) != SR_OK) | |
717 | return SR_ERR; | |
bafd4890 ML |
718 | sr_dbg("Current vertical gain CH1 %g CH2 %g", devc->vdiv[0], devc->vdiv[1]); |
719 | ||
babab622 | 720 | if (devc->model->protocol == PROTOCOL_IEEE488_2) { |
bafd4890 | 721 | /* Vertical reference - not certain if this is the place to read it. */ |
17b5b202 | 722 | if (sr_scpi_send(sdi->conn, ":WAV:SOUR CHAN1") != SR_OK) |
bafd4890 ML |
723 | return SR_ERR; |
724 | if (get_cfg_int(sdi, ":WAV:YREF?", &devc->vert_reference[0]) != SR_OK) | |
725 | return SR_ERR; | |
17b5b202 | 726 | if (sr_scpi_send(sdi->conn, ":WAV:SOUR CHAN2") != SR_OK) |
bafd4890 ML |
727 | return SR_ERR; |
728 | if (get_cfg_int(sdi, ":WAV:YREF?", &devc->vert_reference[1]) != SR_OK) | |
729 | return SR_ERR; | |
730 | sr_dbg("Current vertical reference CH1 %d CH2 %d", | |
731 | devc->vert_reference[0], devc->vert_reference[1]); | |
732 | } | |
254dd102 BV |
733 | |
734 | /* Vertical offset. */ | |
735 | if (get_cfg_float(sdi, ":CHAN1:OFFS?", &devc->vert_offset[0]) != SR_OK) | |
736 | return SR_ERR; | |
737 | if (get_cfg_float(sdi, ":CHAN2:OFFS?", &devc->vert_offset[1]) != SR_OK) | |
738 | return SR_ERR; | |
bafd4890 | 739 | sr_dbg("Current vertical offset CH1 %g CH2 %g", devc->vert_offset[0], |
254dd102 BV |
740 | devc->vert_offset[1]); |
741 | ||
742 | /* Coupling. */ | |
743 | if (get_cfg_string(sdi, ":CHAN1:COUP?", &devc->coupling[0]) != SR_OK) | |
744 | return SR_ERR; | |
745 | if (get_cfg_string(sdi, ":CHAN2:COUP?", &devc->coupling[1]) != SR_OK) | |
746 | return SR_ERR; | |
747 | sr_dbg("Current coupling CH1 %s CH2 %s", devc->coupling[0], | |
748 | devc->coupling[1]); | |
749 | ||
750 | /* Trigger source. */ | |
751 | if (get_cfg_string(sdi, ":TRIG:EDGE:SOUR?", &devc->trigger_source) != SR_OK) | |
752 | return SR_ERR; | |
753 | sr_dbg("Current trigger source %s", devc->trigger_source); | |
754 | ||
755 | /* Horizontal trigger position. */ | |
756 | if (get_cfg_float(sdi, ":TIM:OFFS?", &devc->horiz_triggerpos) != SR_OK) | |
757 | return SR_ERR; | |
bafd4890 | 758 | sr_dbg("Current horizontal trigger position %g", devc->horiz_triggerpos); |
254dd102 BV |
759 | |
760 | /* Trigger slope. */ | |
761 | if (get_cfg_string(sdi, ":TRIG:EDGE:SLOP?", &devc->trigger_slope) != SR_OK) | |
762 | return SR_ERR; | |
763 | sr_dbg("Current trigger slope %s", devc->trigger_slope); | |
764 | ||
765 | return SR_OK; | |
766 | } |