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16e76bae MS |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2013 Marc Schink <sigrok-dev@marcschink.de> | |
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 "protocol.h" | |
21 | ||
e52e712d MS |
22 | extern struct sr_dev_driver ikalogic_scanalogic2_driver_info; |
23 | static struct sr_dev_driver *di = &ikalogic_scanalogic2_driver_info; | |
24 | ||
79914b3a | 25 | extern uint64_t sl2_samplerates[NUM_SAMPLERATES]; |
e52e712d MS |
26 | |
27 | static void stop_acquisition(struct sr_dev_inst *sdi) | |
16e76bae | 28 | { |
6c60facc | 29 | struct drv_context *drvc = sdi->driver->priv; |
e52e712d MS |
30 | struct dev_context *devc; |
31 | struct sr_datafeed_packet packet; | |
e52e712d MS |
32 | |
33 | devc = sdi->priv; | |
34 | ||
35 | /* Remove USB file descriptors from polling. */ | |
102f1239 | 36 | usb_source_remove(sdi->session, drvc->sr_ctx); |
16e76bae | 37 | |
e52e712d MS |
38 | packet.type = SR_DF_END; |
39 | sr_session_send(devc->cb_data, &packet); | |
40 | ||
41 | sdi->status = SR_ST_ACTIVE; | |
42 | } | |
43 | ||
44 | static void abort_acquisition(struct sr_dev_inst *sdi) | |
45 | { | |
6c60facc | 46 | struct drv_context *drvc = sdi->driver->priv; |
16e76bae | 47 | struct dev_context *devc; |
e52e712d | 48 | struct sr_datafeed_packet packet; |
e52e712d MS |
49 | |
50 | devc = sdi->priv; | |
51 | ||
52 | /* Remove USB file descriptors from polling. */ | |
102f1239 | 53 | usb_source_remove(sdi->session, drvc->sr_ctx); |
e52e712d MS |
54 | |
55 | packet.type = SR_DF_END; | |
56 | sr_session_send(devc->cb_data, &packet); | |
57 | ||
58 | sdi->driver->dev_close(sdi); | |
59 | } | |
60 | ||
61 | static void buffer_sample_data(const struct sr_dev_inst *sdi) | |
62 | { | |
63 | struct dev_context *devc; | |
64 | unsigned int offset, packet_length; | |
65 | ||
66 | devc = sdi->priv; | |
67 | ||
ba7dd8bb | 68 | if (devc->channels[devc->channel]->enabled) { |
e52e712d MS |
69 | offset = devc->sample_packet * PACKET_NUM_SAMPLE_BYTES; |
70 | ||
71 | /* | |
72 | * Determine the packet length to ensure that the last packet | |
73 | * will not exceed the buffer size. | |
74 | */ | |
75 | packet_length = MIN(PACKET_NUM_SAMPLE_BYTES, | |
76 | MAX_DEV_SAMPLE_BYTES - offset); | |
77 | ||
78 | /* | |
79 | * Skip the first 4 bytes of the source buffer because they | |
80 | * contain channel and packet information only. | |
81 | */ | |
82 | memcpy(devc->sample_buffer[devc->channel] + offset, | |
83 | devc->xfer_data_in + 4, packet_length); | |
84 | } | |
85 | } | |
86 | ||
87 | static void process_sample_data(const struct sr_dev_inst *sdi) | |
88 | { | |
89 | struct dev_context *devc; | |
90 | struct sr_datafeed_packet packet; | |
91 | struct sr_datafeed_logic logic; | |
3f239f08 | 92 | uint8_t i, j, tmp, buffer[PACKET_NUM_SAMPLES], *ptr[NUM_CHANNELS]; |
e52e712d MS |
93 | uint16_t offset, n = 0; |
94 | int8_t k; | |
95 | ||
96 | devc = sdi->priv; | |
97 | offset = devc->sample_packet * PACKET_NUM_SAMPLE_BYTES; | |
98 | ||
99 | /* | |
100 | * Array of pointers to the sample data of all channels up to the last | |
101 | * enabled one for an uniform access to them. Note that the currently | |
102 | * received samples always belong to the last enabled channel. | |
103 | */ | |
ba7dd8bb UH |
104 | for (i = 0; i < devc->num_enabled_channels - 1; i++) |
105 | ptr[i] = devc->sample_buffer[devc->channel_map[i]] + offset; | |
e52e712d MS |
106 | |
107 | /* | |
c824eb63 UH |
108 | * Skip the first 4 bytes of the buffer because they contain channel |
109 | * and packet information only. | |
e52e712d MS |
110 | */ |
111 | ptr[i] = devc->xfer_data_in + 4; | |
112 | ||
113 | for (i = 0; i < PACKET_NUM_SAMPLE_BYTES; i++) { | |
114 | /* Stop processing if all requested samples are processed. */ | |
115 | if (devc->samples_processed == devc->limit_samples) | |
116 | break; | |
117 | ||
118 | k = 7; | |
119 | ||
120 | if (devc->samples_processed == 0) { | |
121 | /* | |
122 | * Adjust the position of the first sample to be | |
123 | * processed because possibly more samples than | |
b07b42f3 UH |
124 | * necessary might have been acquired. This is because |
125 | * the number of acquired samples is always rounded up | |
c824eb63 | 126 | * to a multiple of 8. |
e52e712d MS |
127 | */ |
128 | k = k - (devc->pre_trigger_bytes * 8) + | |
129 | devc->pre_trigger_samples; | |
130 | ||
c824eb63 | 131 | sr_dbg("Start processing at sample: %d.", 7 - k); |
e52e712d MS |
132 | |
133 | /* | |
c824eb63 UH |
134 | * Send the trigger before the first sample is |
135 | * processed if no pre trigger samples were calculated | |
136 | * through the capture ratio. | |
e52e712d MS |
137 | */ |
138 | if (devc->trigger_type != TRIGGER_TYPE_NONE && | |
139 | devc->pre_trigger_samples == 0) { | |
140 | packet.type = SR_DF_TRIGGER; | |
141 | sr_session_send(devc->cb_data, &packet); | |
142 | } | |
143 | } | |
144 | ||
145 | for (; k >= 0; k--) { | |
146 | /* | |
147 | * Stop processing if all requested samples are | |
148 | * processed. | |
149 | */ | |
150 | if (devc->samples_processed == devc->limit_samples) | |
151 | break; | |
152 | ||
153 | buffer[n] = 0; | |
154 | ||
155 | /* | |
156 | * Extract the current sample for each enabled channel | |
157 | * and store them in the buffer. | |
158 | */ | |
ba7dd8bb | 159 | for (j = 0; j < devc->num_enabled_channels; j++) { |
e52e712d | 160 | tmp = (ptr[j][i] & (1 << k)) >> k; |
ba7dd8bb | 161 | buffer[n] |= tmp << devc->channel_map[j]; |
e52e712d MS |
162 | } |
163 | ||
164 | n++; | |
165 | devc->samples_processed++; | |
166 | ||
167 | /* | |
168 | * Send all processed samples and the trigger if the | |
169 | * number of processed samples reaches the calculated | |
170 | * number of pre trigger samples. | |
171 | */ | |
172 | if (devc->samples_processed == devc->pre_trigger_samples && | |
173 | devc->trigger_type != TRIGGER_TYPE_NONE) { | |
174 | packet.type = SR_DF_LOGIC; | |
175 | packet.payload = &logic; | |
176 | logic.length = n; | |
177 | logic.unitsize = 1; | |
178 | logic.data = buffer; | |
179 | sr_session_send(devc->cb_data, &packet); | |
180 | ||
181 | packet.type = SR_DF_TRIGGER; | |
182 | sr_session_send(devc->cb_data, &packet); | |
183 | ||
184 | n = 0; | |
185 | } | |
186 | } | |
187 | } | |
188 | ||
189 | if (n > 0) { | |
190 | packet.type = SR_DF_LOGIC; | |
191 | packet.payload = &logic; | |
192 | logic.length = n; | |
193 | logic.unitsize = 1; | |
194 | logic.data = buffer; | |
195 | sr_session_send(devc->cb_data, &packet); | |
196 | } | |
197 | } | |
198 | ||
79914b3a | 199 | SR_PRIV int ikalogic_scanalogic2_receive_data(int fd, int revents, void *cb_data) |
e52e712d MS |
200 | { |
201 | struct sr_dev_inst *sdi; | |
202 | struct dev_context *devc; | |
203 | struct drv_context *drvc; | |
204 | struct timeval tv; | |
205 | int64_t current_time, time_elapsed; | |
206 | int ret = 0; | |
207 | ||
208 | (void)fd; | |
209 | (void)revents; | |
16e76bae MS |
210 | |
211 | if (!(sdi = cb_data)) | |
212 | return TRUE; | |
213 | ||
214 | if (!(devc = sdi->priv)) | |
215 | return TRUE; | |
216 | ||
e52e712d MS |
217 | drvc = di->priv; |
218 | current_time = g_get_monotonic_time(); | |
219 | ||
220 | if (devc->state == STATE_WAIT_DATA_READY && | |
221 | !devc->wait_data_ready_locked) { | |
222 | time_elapsed = current_time - devc->wait_data_ready_time; | |
223 | ||
224 | /* | |
c824eb63 UH |
225 | * Check here for stopping in addition to the transfer |
226 | * callback functions to avoid waiting until the | |
227 | * WAIT_DATA_READY_INTERVAL has expired. | |
e52e712d MS |
228 | */ |
229 | if (sdi->status == SR_ST_STOPPING) { | |
230 | if (!devc->stopping_in_progress) { | |
231 | devc->next_state = STATE_RESET_AND_IDLE; | |
232 | devc->stopping_in_progress = TRUE; | |
233 | ret = libusb_submit_transfer(devc->xfer_in); | |
234 | } | |
235 | } else if (time_elapsed >= WAIT_DATA_READY_INTERVAL) { | |
236 | devc->wait_data_ready_locked = TRUE; | |
237 | ret = libusb_submit_transfer(devc->xfer_in); | |
238 | } | |
239 | } | |
240 | ||
241 | if (ret != 0) { | |
c824eb63 | 242 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
243 | abort_acquisition(sdi); |
244 | return TRUE; | |
245 | } | |
246 | ||
247 | tv.tv_sec = 0; | |
248 | tv.tv_usec = 0; | |
249 | ||
250 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
251 | NULL); | |
252 | ||
253 | /* Check if an error occurred on a transfer. */ | |
c824eb63 | 254 | if (devc->transfer_error) |
e52e712d | 255 | abort_acquisition(sdi); |
16e76bae MS |
256 | |
257 | return TRUE; | |
258 | } | |
e52e712d | 259 | |
79914b3a | 260 | SR_PRIV void sl2_receive_transfer_in( struct libusb_transfer *transfer) |
e52e712d MS |
261 | { |
262 | struct sr_dev_inst *sdi; | |
263 | struct dev_context *devc; | |
264 | uint8_t last_channel; | |
265 | int ret = 0; | |
266 | ||
267 | sdi = transfer->user_data; | |
268 | devc = sdi->priv; | |
269 | ||
270 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
c824eb63 | 271 | sr_err("Transfer to device failed: %i.", transfer->status); |
e52e712d MS |
272 | devc->transfer_error = TRUE; |
273 | return; | |
274 | } | |
275 | ||
276 | if (sdi->status == SR_ST_STOPPING && !devc->stopping_in_progress) { | |
277 | devc->next_state = STATE_RESET_AND_IDLE; | |
278 | devc->stopping_in_progress = TRUE; | |
279 | ||
280 | if (libusb_submit_transfer(devc->xfer_in) != 0) { | |
c824eb63 | 281 | sr_err("Submit transfer failed: %s.", |
e52e712d MS |
282 | libusb_error_name(ret)); |
283 | devc->transfer_error = TRUE; | |
284 | } | |
285 | ||
286 | return; | |
287 | } | |
288 | ||
28083961 UH |
289 | if (devc->state != devc->next_state) |
290 | sr_spew("State changed from %i to %i.", | |
291 | devc->state, devc->next_state); | |
e52e712d MS |
292 | devc->state = devc->next_state; |
293 | ||
294 | if (devc->state == STATE_WAIT_DATA_READY) { | |
295 | /* Check if the received data are a valid device status. */ | |
296 | if (devc->xfer_data_in[0] == 0x05) { | |
297 | if (devc->xfer_data_in[1] == STATUS_WAITING_FOR_TRIGGER) | |
298 | sr_dbg("Waiting for trigger."); | |
299 | else if (devc->xfer_data_in[1] == STATUS_SAMPLING) | |
300 | sr_dbg("Sampling in progress."); | |
301 | } | |
302 | ||
303 | /* | |
304 | * Check if the received data are a valid device status and the | |
305 | * sample data are ready. | |
306 | */ | |
307 | if (devc->xfer_data_in[0] == 0x05 && | |
308 | devc->xfer_data_in[1] == STATUS_DATA_READY) { | |
309 | devc->next_state = STATE_RECEIVE_DATA; | |
310 | ret = libusb_submit_transfer(transfer); | |
311 | } else { | |
312 | devc->wait_data_ready_locked = FALSE; | |
313 | devc->wait_data_ready_time = g_get_monotonic_time(); | |
314 | } | |
315 | } else if (devc->state == STATE_RECEIVE_DATA) { | |
ba7dd8bb | 316 | last_channel = devc->channel_map[devc->num_enabled_channels - 1]; |
e52e712d MS |
317 | |
318 | if (devc->channel < last_channel) { | |
319 | buffer_sample_data(sdi); | |
320 | } else if (devc->channel == last_channel) { | |
321 | process_sample_data(sdi); | |
322 | } else { | |
323 | /* | |
324 | * Stop acquisition because all samples of enabled | |
ba7dd8bb | 325 | * channels are processed. |
e52e712d MS |
326 | */ |
327 | devc->next_state = STATE_RESET_AND_IDLE; | |
328 | } | |
329 | ||
330 | devc->sample_packet++; | |
331 | devc->sample_packet %= devc->num_sample_packets; | |
332 | ||
333 | if (devc->sample_packet == 0) | |
334 | devc->channel++; | |
335 | ||
336 | ret = libusb_submit_transfer(transfer); | |
337 | } else if (devc->state == STATE_RESET_AND_IDLE) { | |
338 | /* Check if the received data are a valid device status. */ | |
339 | if (devc->xfer_data_in[0] == 0x05) { | |
340 | if (devc->xfer_data_in[1] == STATUS_DEVICE_READY) { | |
341 | devc->next_state = STATE_IDLE; | |
342 | devc->xfer_data_out[0] = CMD_IDLE; | |
343 | } else { | |
344 | devc->next_state = STATE_WAIT_DEVICE_READY; | |
345 | devc->xfer_data_out[0] = CMD_RESET; | |
346 | } | |
347 | ||
348 | ret = libusb_submit_transfer(devc->xfer_out); | |
349 | } else { | |
350 | /* | |
c824eb63 UH |
351 | * The received device status is invalid which |
352 | * indicates that the device is not ready to accept | |
353 | * commands. Request a new device status until a valid | |
354 | * device status is received. | |
e52e712d MS |
355 | */ |
356 | ret = libusb_submit_transfer(transfer); | |
357 | } | |
358 | } else if (devc->state == STATE_WAIT_DEVICE_READY) { | |
359 | /* Check if the received data are a valid device status. */ | |
360 | if (devc->xfer_data_in[0] == 0x05) { | |
361 | if (devc->xfer_data_in[1] == STATUS_DEVICE_READY) { | |
362 | devc->next_state = STATE_IDLE; | |
363 | devc->xfer_data_out[0] = CMD_IDLE; | |
364 | } else { | |
365 | /* | |
366 | * The received device status is valid but the | |
367 | * device is not ready. Probably the device did | |
368 | * not recognize the last reset. Reset the | |
369 | * device again. | |
370 | */ | |
371 | devc->xfer_data_out[0] = CMD_RESET; | |
372 | } | |
373 | ||
374 | ret = libusb_submit_transfer(devc->xfer_out); | |
375 | } else { | |
376 | /* | |
377 | * The device is not ready and therefore not able to | |
c824eb63 UH |
378 | * change to the idle state. Request a new device |
379 | * status until the device is ready. | |
e52e712d MS |
380 | */ |
381 | ret = libusb_submit_transfer(transfer); | |
382 | } | |
383 | } | |
384 | ||
385 | if (ret != 0) { | |
c824eb63 | 386 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
387 | devc->transfer_error = TRUE; |
388 | } | |
389 | } | |
390 | ||
79914b3a | 391 | SR_PRIV void sl2_receive_transfer_out( struct libusb_transfer *transfer) |
e52e712d MS |
392 | { |
393 | struct sr_dev_inst *sdi; | |
394 | struct dev_context *devc; | |
395 | int ret = 0; | |
396 | ||
397 | sdi = transfer->user_data; | |
398 | devc = sdi->priv; | |
399 | ||
400 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
c824eb63 | 401 | sr_err("Transfer to device failed: %i.", transfer->status); |
e52e712d MS |
402 | devc->transfer_error = TRUE; |
403 | return; | |
404 | } | |
405 | ||
406 | if (sdi->status == SR_ST_STOPPING && !devc->stopping_in_progress) { | |
407 | devc->next_state = STATE_RESET_AND_IDLE; | |
408 | devc->stopping_in_progress = TRUE; | |
409 | ||
410 | if (libusb_submit_transfer(devc->xfer_in) != 0) { | |
c824eb63 | 411 | sr_err("Submit transfer failed: %s.", |
e52e712d MS |
412 | libusb_error_name(ret)); |
413 | ||
414 | devc->transfer_error = TRUE; | |
415 | } | |
416 | ||
417 | return; | |
418 | } | |
419 | ||
28083961 UH |
420 | if (devc->state != devc->next_state) |
421 | sr_spew("State changed from %i to %i.", | |
422 | devc->state, devc->next_state); | |
e52e712d MS |
423 | devc->state = devc->next_state; |
424 | ||
425 | if (devc->state == STATE_IDLE) { | |
426 | stop_acquisition(sdi); | |
427 | } else if (devc->state == STATE_SAMPLE) { | |
428 | devc->next_state = STATE_WAIT_DATA_READY; | |
429 | ret = libusb_submit_transfer(devc->xfer_in); | |
430 | } else if (devc->state == STATE_WAIT_DEVICE_READY) { | |
431 | ret = libusb_submit_transfer(devc->xfer_in); | |
432 | } | |
433 | ||
434 | if (ret != 0) { | |
c824eb63 | 435 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
436 | devc->transfer_error = TRUE; |
437 | } | |
438 | } | |
439 | ||
79914b3a | 440 | SR_PRIV int sl2_set_samplerate(const struct sr_dev_inst *sdi, |
e52e712d MS |
441 | uint64_t samplerate) |
442 | { | |
443 | struct dev_context *devc; | |
444 | unsigned int i; | |
445 | ||
446 | devc = sdi->priv; | |
447 | ||
448 | for (i = 0; i < NUM_SAMPLERATES; i++) { | |
79914b3a | 449 | if (sl2_samplerates[i] == samplerate) { |
e52e712d MS |
450 | devc->samplerate = samplerate; |
451 | devc->samplerate_id = NUM_SAMPLERATES - i - 1; | |
452 | return SR_OK; | |
453 | } | |
454 | } | |
455 | ||
456 | return SR_ERR_ARG; | |
457 | } | |
458 | ||
79914b3a UH |
459 | SR_PRIV int sl2_set_limit_samples(const struct sr_dev_inst *sdi, |
460 | uint64_t limit_samples) | |
e52e712d MS |
461 | { |
462 | struct dev_context *devc; | |
463 | ||
464 | devc = sdi->priv; | |
465 | ||
466 | if (limit_samples == 0) { | |
467 | sr_err("Invalid number of limit samples: %" PRIu64 ".", | |
468 | limit_samples); | |
469 | return SR_ERR_ARG; | |
470 | } | |
471 | ||
472 | if (limit_samples > MAX_SAMPLES) | |
473 | limit_samples = MAX_SAMPLES; | |
474 | ||
c824eb63 | 475 | sr_dbg("Limit samples set to %" PRIu64 ".", limit_samples); |
e52e712d MS |
476 | |
477 | devc->limit_samples = limit_samples; | |
478 | ||
479 | return SR_OK; | |
480 | } | |
481 | ||
02d5c0d8 | 482 | SR_PRIV int sl2_convert_trigger(const struct sr_dev_inst *sdi) |
e52e712d MS |
483 | { |
484 | struct dev_context *devc; | |
02d5c0d8 BV |
485 | struct sr_trigger *trigger; |
486 | struct sr_trigger_stage *stage; | |
487 | struct sr_trigger_match *match; | |
488 | const GSList *l, *m; | |
489 | int num_triggers_anyedge; | |
e52e712d MS |
490 | |
491 | devc = sdi->priv; | |
492 | ||
493 | /* Disable the trigger by default. */ | |
494 | devc->trigger_channel = TRIGGER_CHANNEL_0; | |
495 | devc->trigger_type = TRIGGER_TYPE_NONE; | |
496 | ||
0812c40e | 497 | if (!(trigger = sr_session_trigger_get(sdi->session))) |
02d5c0d8 | 498 | return SR_OK; |
e52e712d | 499 | |
02d5c0d8 BV |
500 | if (g_slist_length(trigger->stages) > 1) { |
501 | sr_err("This device only supports 1 trigger stage."); | |
502 | return SR_ERR; | |
503 | } | |
e52e712d | 504 | |
02d5c0d8 BV |
505 | num_triggers_anyedge = 0; |
506 | for (l = trigger->stages; l; l = l->next) { | |
507 | stage = l->data; | |
508 | for (m = stage->matches; m; m = m->next) { | |
509 | match = m->data; | |
510 | if (!match->channel->enabled) | |
511 | /* Ignore disabled channels with a trigger. */ | |
512 | continue; | |
513 | devc->trigger_channel = match->channel->index + 1; | |
514 | switch (match->match) { | |
515 | case SR_TRIGGER_RISING: | |
516 | devc->trigger_type = TRIGGER_TYPE_POSEDGE; | |
517 | break; | |
518 | case SR_TRIGGER_FALLING: | |
519 | devc->trigger_type = TRIGGER_TYPE_NEGEDGE; | |
520 | break; | |
521 | case SR_TRIGGER_EDGE: | |
522 | devc->trigger_type = TRIGGER_TYPE_ANYEDGE; | |
523 | num_triggers_anyedge++; | |
524 | break; | |
525 | } | |
e52e712d | 526 | } |
e52e712d MS |
527 | } |
528 | ||
529 | /* | |
530 | * Set trigger to any edge on all channels if the trigger for each | |
531 | * channel is set to any edge. | |
532 | */ | |
3f239f08 | 533 | if (num_triggers_anyedge == NUM_CHANNELS) { |
e52e712d MS |
534 | devc->trigger_channel = TRIGGER_CHANNEL_ALL; |
535 | devc->trigger_type = TRIGGER_TYPE_ANYEDGE; | |
536 | } | |
537 | ||
c824eb63 | 538 | sr_dbg("Trigger set to channel 0x%02x and type 0x%02x.", |
e52e712d | 539 | devc->trigger_channel, devc->trigger_type); |
02d5c0d8 BV |
540 | |
541 | return SR_OK; | |
e52e712d MS |
542 | } |
543 | ||
79914b3a UH |
544 | SR_PRIV int sl2_set_capture_ratio(const struct sr_dev_inst *sdi, |
545 | uint64_t capture_ratio) | |
e52e712d MS |
546 | { |
547 | struct dev_context *devc; | |
548 | ||
549 | devc = sdi->priv; | |
550 | ||
551 | if (capture_ratio > 100) { | |
552 | sr_err("Invalid capture ratio: %" PRIu64 " %%.", capture_ratio); | |
553 | return SR_ERR_ARG; | |
554 | } | |
555 | ||
556 | sr_info("Capture ratio set to %" PRIu64 " %%.", capture_ratio); | |
557 | ||
558 | devc->capture_ratio = capture_ratio; | |
559 | ||
560 | return SR_OK; | |
561 | } | |
562 | ||
79914b3a UH |
563 | SR_PRIV int sl2_set_after_trigger_delay(const struct sr_dev_inst *sdi, |
564 | uint64_t after_trigger_delay) | |
e52e712d MS |
565 | { |
566 | struct dev_context *devc; | |
567 | ||
568 | devc = sdi->priv; | |
569 | ||
570 | if (after_trigger_delay > MAX_AFTER_TRIGGER_DELAY) { | |
571 | sr_err("Invalid after trigger delay: %" PRIu64 " ms.", | |
572 | after_trigger_delay); | |
573 | return SR_ERR_ARG; | |
574 | } | |
575 | ||
576 | sr_info("After trigger delay set to %" PRIu64 " ms.", | |
577 | after_trigger_delay); | |
578 | ||
579 | devc->after_trigger_delay = after_trigger_delay; | |
580 | ||
581 | return SR_OK; | |
582 | } | |
583 | ||
79914b3a | 584 | SR_PRIV void sl2_calculate_trigger_samples(const struct sr_dev_inst *sdi) |
e52e712d MS |
585 | { |
586 | struct dev_context *devc; | |
587 | uint64_t pre_trigger_samples, post_trigger_samples; | |
588 | uint16_t pre_trigger_bytes, post_trigger_bytes; | |
589 | uint8_t cr; | |
590 | ||
591 | devc = sdi->priv; | |
592 | cr = devc->capture_ratio; | |
593 | ||
594 | /* Ignore the capture ratio if no trigger is enabled. */ | |
595 | if (devc->trigger_type == TRIGGER_TYPE_NONE) | |
596 | cr = 0; | |
597 | ||
598 | pre_trigger_samples = (devc->limit_samples * cr) / 100; | |
599 | post_trigger_samples = (devc->limit_samples * (100 - cr)) / 100; | |
600 | ||
601 | /* | |
602 | * Increase the number of post trigger samples by one to compensate the | |
603 | * possible loss of a sample through integer rounding. | |
604 | */ | |
605 | if (pre_trigger_samples + post_trigger_samples != devc->limit_samples) | |
606 | post_trigger_samples++; | |
607 | ||
608 | /* | |
609 | * The device requires the number of samples in multiples of 8 which | |
610 | * will also be called sample bytes in the following. | |
611 | */ | |
612 | pre_trigger_bytes = pre_trigger_samples / 8; | |
613 | post_trigger_bytes = post_trigger_samples / 8; | |
614 | ||
615 | /* | |
616 | * Round up the number of sample bytes to ensure that at least the | |
617 | * requested number of samples will be acquired. Note that due to this | |
618 | * rounding the buffer to store these sample bytes needs to be at least | |
c824eb63 UH |
619 | * one sample byte larger than the minimal number of sample bytes |
620 | * needed to store the requested samples. | |
e52e712d MS |
621 | */ |
622 | if (pre_trigger_samples % 8 != 0) | |
623 | pre_trigger_bytes++; | |
624 | ||
625 | if (post_trigger_samples % 8 != 0) | |
626 | post_trigger_bytes++; | |
627 | ||
628 | sr_info("Pre trigger samples: %" PRIu64 ".", pre_trigger_samples); | |
629 | sr_info("Post trigger samples: %" PRIu64 ".", post_trigger_samples); | |
630 | sr_dbg("Pre trigger sample bytes: %" PRIu16 ".", pre_trigger_bytes); | |
631 | sr_dbg("Post trigger sample bytes: %" PRIu16 ".", post_trigger_bytes); | |
632 | ||
633 | devc->pre_trigger_samples = pre_trigger_samples; | |
634 | devc->pre_trigger_bytes = pre_trigger_bytes; | |
635 | devc->post_trigger_bytes = post_trigger_bytes; | |
636 | } | |
637 | ||
79914b3a | 638 | SR_PRIV int sl2_get_device_info(struct sr_usb_dev_inst usb, |
e52e712d MS |
639 | struct device_info *dev_info) |
640 | { | |
641 | struct drv_context *drvc; | |
642 | uint8_t buffer[PACKET_LENGTH]; | |
643 | int ret; | |
644 | ||
645 | drvc = di->priv; | |
646 | ||
647 | if (!dev_info) | |
648 | return SR_ERR_ARG; | |
649 | ||
650 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, &usb) != SR_OK) | |
651 | return SR_ERR; | |
652 | ||
653 | /* | |
654 | * Determine if a kernel driver is active on this interface and, if so, | |
655 | * detach it. | |
656 | */ | |
657 | if (libusb_kernel_driver_active(usb.devhdl, USB_INTERFACE) == 1) { | |
658 | ret = libusb_detach_kernel_driver(usb.devhdl, | |
659 | USB_INTERFACE); | |
660 | ||
661 | if (ret < 0) { | |
9526f2d4 | 662 | sr_err("Failed to detach kernel driver: %s.", |
e52e712d MS |
663 | libusb_error_name(ret)); |
664 | libusb_close(usb.devhdl); | |
665 | return SR_ERR; | |
666 | } | |
667 | } | |
668 | ||
669 | ret = libusb_claim_interface(usb.devhdl, USB_INTERFACE); | |
670 | ||
671 | if (ret) { | |
672 | sr_err("Failed to claim interface: %s.", | |
673 | libusb_error_name(ret)); | |
674 | libusb_close(usb.devhdl); | |
675 | return SR_ERR; | |
676 | } | |
677 | ||
678 | memset(buffer, 0, sizeof(buffer)); | |
679 | ||
680 | /* | |
681 | * Reset the device to ensure it is in a proper state to request the | |
682 | * device information. | |
683 | */ | |
684 | buffer[0] = CMD_RESET; | |
79914b3a | 685 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
686 | sr_err("Resetting of device failed: %s.", |
687 | libusb_error_name(ret)); | |
688 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
689 | libusb_close(usb.devhdl); | |
690 | return SR_ERR; | |
691 | } | |
692 | ||
693 | buffer[0] = CMD_INFO; | |
79914b3a | 694 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
695 | sr_err("Requesting of device information failed: %s.", |
696 | libusb_error_name(ret)); | |
697 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
698 | libusb_close(usb.devhdl); | |
699 | return SR_ERR; | |
700 | } | |
701 | ||
79914b3a | 702 | if ((ret = sl2_transfer_in(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
703 | sr_err("Receiving of device information failed: %s.", |
704 | libusb_error_name(ret)); | |
705 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
706 | libusb_close(usb.devhdl); | |
707 | return SR_ERR; | |
708 | } | |
709 | ||
710 | memcpy(&(dev_info->serial), buffer + 1, sizeof(uint32_t)); | |
711 | dev_info->serial = GUINT32_FROM_LE(dev_info->serial); | |
712 | ||
713 | dev_info->fw_ver_major = buffer[5]; | |
714 | dev_info->fw_ver_minor = buffer[6]; | |
715 | ||
716 | buffer[0] = CMD_RESET; | |
79914b3a | 717 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
718 | sr_err("Device reset failed: %s.", libusb_error_name(ret)); |
719 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
720 | libusb_close(usb.devhdl); | |
721 | return SR_ERR; | |
722 | } | |
723 | ||
724 | /* | |
725 | * Set the device to idle state. If the device is not in idle state it | |
c824eb63 UH |
726 | * possibly will reset itself after a few seconds without being used |
727 | * and thereby close the connection. | |
e52e712d MS |
728 | */ |
729 | buffer[0] = CMD_IDLE; | |
79914b3a | 730 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
731 | sr_err("Failed to set device in idle state: %s.", |
732 | libusb_error_name(ret)); | |
733 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
734 | libusb_close(usb.devhdl); | |
735 | return SR_ERR; | |
736 | } | |
737 | ||
738 | ret = libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
739 | ||
740 | if (ret < 0) { | |
9526f2d4 | 741 | sr_err("Failed to release interface: %s.", |
e52e712d MS |
742 | libusb_error_name(ret)); |
743 | libusb_close(usb.devhdl); | |
744 | return SR_ERR; | |
745 | } | |
746 | ||
747 | libusb_close(usb.devhdl); | |
748 | ||
749 | return SR_OK; | |
750 | } | |
751 | ||
79914b3a | 752 | SR_PRIV int sl2_transfer_in(libusb_device_handle *dev_handle, uint8_t *data) |
e52e712d MS |
753 | { |
754 | return libusb_control_transfer(dev_handle, USB_REQUEST_TYPE_IN, | |
fb8d593c | 755 | USB_HID_GET_REPORT, USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, |
c824eb63 | 756 | (unsigned char *)data, PACKET_LENGTH, USB_TIMEOUT); |
e52e712d MS |
757 | } |
758 | ||
79914b3a | 759 | SR_PRIV int sl2_transfer_out(libusb_device_handle *dev_handle, uint8_t *data) |
e52e712d MS |
760 | { |
761 | return libusb_control_transfer(dev_handle, USB_REQUEST_TYPE_OUT, | |
762 | USB_HID_SET_REPORT, USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, | |
c824eb63 | 763 | (unsigned char *)data, PACKET_LENGTH, USB_TIMEOUT); |
e52e712d | 764 | } |