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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 | ||
6ec6c43b | 20 | #include <config.h> |
16e76bae MS |
21 | #include "protocol.h" |
22 | ||
e52e712d | 23 | extern struct sr_dev_driver ikalogic_scanalogic2_driver_info; |
e52e712d | 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 | { |
338143ea | 29 | struct drv_context *drvc = sdi->driver->context; |
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 | { | |
338143ea | 46 | struct drv_context *drvc = sdi->driver->context; |
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; | |
4f840ce9 | 202 | struct sr_dev_driver *di; |
e52e712d MS |
203 | struct dev_context *devc; |
204 | struct drv_context *drvc; | |
205 | struct timeval tv; | |
206 | int64_t current_time, time_elapsed; | |
207 | int ret = 0; | |
208 | ||
209 | (void)fd; | |
210 | (void)revents; | |
16e76bae MS |
211 | |
212 | if (!(sdi = cb_data)) | |
213 | return TRUE; | |
214 | ||
215 | if (!(devc = sdi->priv)) | |
216 | return TRUE; | |
217 | ||
4f840ce9 | 218 | di = sdi->driver; |
41812aca | 219 | drvc = di->context; |
e52e712d MS |
220 | current_time = g_get_monotonic_time(); |
221 | ||
222 | if (devc->state == STATE_WAIT_DATA_READY && | |
223 | !devc->wait_data_ready_locked) { | |
224 | time_elapsed = current_time - devc->wait_data_ready_time; | |
225 | ||
226 | /* | |
c824eb63 UH |
227 | * Check here for stopping in addition to the transfer |
228 | * callback functions to avoid waiting until the | |
229 | * WAIT_DATA_READY_INTERVAL has expired. | |
e52e712d MS |
230 | */ |
231 | if (sdi->status == SR_ST_STOPPING) { | |
232 | if (!devc->stopping_in_progress) { | |
233 | devc->next_state = STATE_RESET_AND_IDLE; | |
234 | devc->stopping_in_progress = TRUE; | |
235 | ret = libusb_submit_transfer(devc->xfer_in); | |
236 | } | |
237 | } else if (time_elapsed >= WAIT_DATA_READY_INTERVAL) { | |
238 | devc->wait_data_ready_locked = TRUE; | |
239 | ret = libusb_submit_transfer(devc->xfer_in); | |
240 | } | |
241 | } | |
242 | ||
243 | if (ret != 0) { | |
c824eb63 | 244 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
245 | abort_acquisition(sdi); |
246 | return TRUE; | |
247 | } | |
248 | ||
249 | tv.tv_sec = 0; | |
250 | tv.tv_usec = 0; | |
251 | ||
252 | libusb_handle_events_timeout_completed(drvc->sr_ctx->libusb_ctx, &tv, | |
253 | NULL); | |
254 | ||
255 | /* Check if an error occurred on a transfer. */ | |
c824eb63 | 256 | if (devc->transfer_error) |
e52e712d | 257 | abort_acquisition(sdi); |
16e76bae MS |
258 | |
259 | return TRUE; | |
260 | } | |
e52e712d | 261 | |
55462b8b | 262 | SR_PRIV void LIBUSB_CALL sl2_receive_transfer_in( struct libusb_transfer *transfer) |
e52e712d MS |
263 | { |
264 | struct sr_dev_inst *sdi; | |
265 | struct dev_context *devc; | |
266 | uint8_t last_channel; | |
267 | int ret = 0; | |
268 | ||
269 | sdi = transfer->user_data; | |
270 | devc = sdi->priv; | |
271 | ||
272 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
eb8e6cd2 UH |
273 | sr_err("Transfer to device failed: %s.", |
274 | libusb_error_name(transfer->status)); | |
e52e712d MS |
275 | devc->transfer_error = TRUE; |
276 | return; | |
277 | } | |
278 | ||
279 | if (sdi->status == SR_ST_STOPPING && !devc->stopping_in_progress) { | |
280 | devc->next_state = STATE_RESET_AND_IDLE; | |
281 | devc->stopping_in_progress = TRUE; | |
282 | ||
283 | if (libusb_submit_transfer(devc->xfer_in) != 0) { | |
c824eb63 | 284 | sr_err("Submit transfer failed: %s.", |
e52e712d MS |
285 | libusb_error_name(ret)); |
286 | devc->transfer_error = TRUE; | |
287 | } | |
288 | ||
289 | return; | |
290 | } | |
291 | ||
28083961 UH |
292 | if (devc->state != devc->next_state) |
293 | sr_spew("State changed from %i to %i.", | |
294 | devc->state, devc->next_state); | |
e52e712d MS |
295 | devc->state = devc->next_state; |
296 | ||
297 | if (devc->state == STATE_WAIT_DATA_READY) { | |
298 | /* Check if the received data are a valid device status. */ | |
299 | if (devc->xfer_data_in[0] == 0x05) { | |
300 | if (devc->xfer_data_in[1] == STATUS_WAITING_FOR_TRIGGER) | |
301 | sr_dbg("Waiting for trigger."); | |
302 | else if (devc->xfer_data_in[1] == STATUS_SAMPLING) | |
303 | sr_dbg("Sampling in progress."); | |
304 | } | |
305 | ||
306 | /* | |
307 | * Check if the received data are a valid device status and the | |
308 | * sample data are ready. | |
309 | */ | |
310 | if (devc->xfer_data_in[0] == 0x05 && | |
311 | devc->xfer_data_in[1] == STATUS_DATA_READY) { | |
312 | devc->next_state = STATE_RECEIVE_DATA; | |
313 | ret = libusb_submit_transfer(transfer); | |
314 | } else { | |
315 | devc->wait_data_ready_locked = FALSE; | |
316 | devc->wait_data_ready_time = g_get_monotonic_time(); | |
317 | } | |
318 | } else if (devc->state == STATE_RECEIVE_DATA) { | |
ba7dd8bb | 319 | last_channel = devc->channel_map[devc->num_enabled_channels - 1]; |
e52e712d MS |
320 | |
321 | if (devc->channel < last_channel) { | |
322 | buffer_sample_data(sdi); | |
323 | } else if (devc->channel == last_channel) { | |
324 | process_sample_data(sdi); | |
325 | } else { | |
326 | /* | |
327 | * Stop acquisition because all samples of enabled | |
ba7dd8bb | 328 | * channels are processed. |
e52e712d MS |
329 | */ |
330 | devc->next_state = STATE_RESET_AND_IDLE; | |
331 | } | |
332 | ||
333 | devc->sample_packet++; | |
334 | devc->sample_packet %= devc->num_sample_packets; | |
335 | ||
336 | if (devc->sample_packet == 0) | |
337 | devc->channel++; | |
338 | ||
339 | ret = libusb_submit_transfer(transfer); | |
340 | } else if (devc->state == STATE_RESET_AND_IDLE) { | |
341 | /* Check if the received data are a valid device status. */ | |
342 | if (devc->xfer_data_in[0] == 0x05) { | |
343 | if (devc->xfer_data_in[1] == STATUS_DEVICE_READY) { | |
344 | devc->next_state = STATE_IDLE; | |
345 | devc->xfer_data_out[0] = CMD_IDLE; | |
346 | } else { | |
347 | devc->next_state = STATE_WAIT_DEVICE_READY; | |
348 | devc->xfer_data_out[0] = CMD_RESET; | |
349 | } | |
350 | ||
351 | ret = libusb_submit_transfer(devc->xfer_out); | |
352 | } else { | |
353 | /* | |
c824eb63 UH |
354 | * The received device status is invalid which |
355 | * indicates that the device is not ready to accept | |
356 | * commands. Request a new device status until a valid | |
357 | * device status is received. | |
e52e712d MS |
358 | */ |
359 | ret = libusb_submit_transfer(transfer); | |
360 | } | |
361 | } else if (devc->state == STATE_WAIT_DEVICE_READY) { | |
362 | /* Check if the received data are a valid device status. */ | |
363 | if (devc->xfer_data_in[0] == 0x05) { | |
364 | if (devc->xfer_data_in[1] == STATUS_DEVICE_READY) { | |
365 | devc->next_state = STATE_IDLE; | |
366 | devc->xfer_data_out[0] = CMD_IDLE; | |
367 | } else { | |
368 | /* | |
369 | * The received device status is valid but the | |
370 | * device is not ready. Probably the device did | |
371 | * not recognize the last reset. Reset the | |
372 | * device again. | |
373 | */ | |
374 | devc->xfer_data_out[0] = CMD_RESET; | |
375 | } | |
376 | ||
377 | ret = libusb_submit_transfer(devc->xfer_out); | |
378 | } else { | |
379 | /* | |
380 | * The device is not ready and therefore not able to | |
c824eb63 UH |
381 | * change to the idle state. Request a new device |
382 | * status until the device is ready. | |
e52e712d MS |
383 | */ |
384 | ret = libusb_submit_transfer(transfer); | |
385 | } | |
386 | } | |
387 | ||
388 | if (ret != 0) { | |
c824eb63 | 389 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
390 | devc->transfer_error = TRUE; |
391 | } | |
392 | } | |
393 | ||
55462b8b | 394 | SR_PRIV void LIBUSB_CALL sl2_receive_transfer_out( struct libusb_transfer *transfer) |
e52e712d MS |
395 | { |
396 | struct sr_dev_inst *sdi; | |
397 | struct dev_context *devc; | |
398 | int ret = 0; | |
399 | ||
400 | sdi = transfer->user_data; | |
401 | devc = sdi->priv; | |
402 | ||
403 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) { | |
eb8e6cd2 UH |
404 | sr_err("Transfer to device failed: %s.", |
405 | libusb_error_name(transfer->status)); | |
e52e712d MS |
406 | devc->transfer_error = TRUE; |
407 | return; | |
408 | } | |
409 | ||
410 | if (sdi->status == SR_ST_STOPPING && !devc->stopping_in_progress) { | |
411 | devc->next_state = STATE_RESET_AND_IDLE; | |
412 | devc->stopping_in_progress = TRUE; | |
413 | ||
414 | if (libusb_submit_transfer(devc->xfer_in) != 0) { | |
c824eb63 | 415 | sr_err("Submit transfer failed: %s.", |
e52e712d MS |
416 | libusb_error_name(ret)); |
417 | ||
418 | devc->transfer_error = TRUE; | |
419 | } | |
420 | ||
421 | return; | |
422 | } | |
423 | ||
28083961 UH |
424 | if (devc->state != devc->next_state) |
425 | sr_spew("State changed from %i to %i.", | |
426 | devc->state, devc->next_state); | |
e52e712d MS |
427 | devc->state = devc->next_state; |
428 | ||
429 | if (devc->state == STATE_IDLE) { | |
430 | stop_acquisition(sdi); | |
431 | } else if (devc->state == STATE_SAMPLE) { | |
432 | devc->next_state = STATE_WAIT_DATA_READY; | |
433 | ret = libusb_submit_transfer(devc->xfer_in); | |
434 | } else if (devc->state == STATE_WAIT_DEVICE_READY) { | |
435 | ret = libusb_submit_transfer(devc->xfer_in); | |
436 | } | |
437 | ||
438 | if (ret != 0) { | |
c824eb63 | 439 | sr_err("Submit transfer failed: %s.", libusb_error_name(ret)); |
e52e712d MS |
440 | devc->transfer_error = TRUE; |
441 | } | |
442 | } | |
443 | ||
79914b3a | 444 | SR_PRIV int sl2_set_samplerate(const struct sr_dev_inst *sdi, |
e52e712d MS |
445 | uint64_t samplerate) |
446 | { | |
447 | struct dev_context *devc; | |
448 | unsigned int i; | |
449 | ||
450 | devc = sdi->priv; | |
451 | ||
452 | for (i = 0; i < NUM_SAMPLERATES; i++) { | |
79914b3a | 453 | if (sl2_samplerates[i] == samplerate) { |
e52e712d MS |
454 | devc->samplerate = samplerate; |
455 | devc->samplerate_id = NUM_SAMPLERATES - i - 1; | |
456 | return SR_OK; | |
457 | } | |
458 | } | |
459 | ||
460 | return SR_ERR_ARG; | |
461 | } | |
462 | ||
79914b3a UH |
463 | SR_PRIV int sl2_set_limit_samples(const struct sr_dev_inst *sdi, |
464 | uint64_t limit_samples) | |
e52e712d MS |
465 | { |
466 | struct dev_context *devc; | |
467 | ||
468 | devc = sdi->priv; | |
469 | ||
470 | if (limit_samples == 0) { | |
471 | sr_err("Invalid number of limit samples: %" PRIu64 ".", | |
472 | limit_samples); | |
473 | return SR_ERR_ARG; | |
474 | } | |
475 | ||
476 | if (limit_samples > MAX_SAMPLES) | |
477 | limit_samples = MAX_SAMPLES; | |
478 | ||
c824eb63 | 479 | sr_dbg("Limit samples set to %" PRIu64 ".", limit_samples); |
e52e712d MS |
480 | |
481 | devc->limit_samples = limit_samples; | |
482 | ||
483 | return SR_OK; | |
484 | } | |
485 | ||
02d5c0d8 | 486 | SR_PRIV int sl2_convert_trigger(const struct sr_dev_inst *sdi) |
e52e712d MS |
487 | { |
488 | struct dev_context *devc; | |
02d5c0d8 BV |
489 | struct sr_trigger *trigger; |
490 | struct sr_trigger_stage *stage; | |
491 | struct sr_trigger_match *match; | |
492 | const GSList *l, *m; | |
493 | int num_triggers_anyedge; | |
e52e712d MS |
494 | |
495 | devc = sdi->priv; | |
496 | ||
497 | /* Disable the trigger by default. */ | |
498 | devc->trigger_channel = TRIGGER_CHANNEL_0; | |
499 | devc->trigger_type = TRIGGER_TYPE_NONE; | |
500 | ||
0812c40e | 501 | if (!(trigger = sr_session_trigger_get(sdi->session))) |
02d5c0d8 | 502 | return SR_OK; |
e52e712d | 503 | |
02d5c0d8 BV |
504 | if (g_slist_length(trigger->stages) > 1) { |
505 | sr_err("This device only supports 1 trigger stage."); | |
506 | return SR_ERR; | |
507 | } | |
e52e712d | 508 | |
02d5c0d8 BV |
509 | num_triggers_anyedge = 0; |
510 | for (l = trigger->stages; l; l = l->next) { | |
511 | stage = l->data; | |
512 | for (m = stage->matches; m; m = m->next) { | |
513 | match = m->data; | |
514 | if (!match->channel->enabled) | |
515 | /* Ignore disabled channels with a trigger. */ | |
516 | continue; | |
517 | devc->trigger_channel = match->channel->index + 1; | |
518 | switch (match->match) { | |
519 | case SR_TRIGGER_RISING: | |
520 | devc->trigger_type = TRIGGER_TYPE_POSEDGE; | |
521 | break; | |
522 | case SR_TRIGGER_FALLING: | |
523 | devc->trigger_type = TRIGGER_TYPE_NEGEDGE; | |
524 | break; | |
525 | case SR_TRIGGER_EDGE: | |
526 | devc->trigger_type = TRIGGER_TYPE_ANYEDGE; | |
527 | num_triggers_anyedge++; | |
528 | break; | |
529 | } | |
e52e712d | 530 | } |
e52e712d MS |
531 | } |
532 | ||
533 | /* | |
534 | * Set trigger to any edge on all channels if the trigger for each | |
535 | * channel is set to any edge. | |
536 | */ | |
3f239f08 | 537 | if (num_triggers_anyedge == NUM_CHANNELS) { |
e52e712d MS |
538 | devc->trigger_channel = TRIGGER_CHANNEL_ALL; |
539 | devc->trigger_type = TRIGGER_TYPE_ANYEDGE; | |
540 | } | |
541 | ||
c824eb63 | 542 | sr_dbg("Trigger set to channel 0x%02x and type 0x%02x.", |
e52e712d | 543 | devc->trigger_channel, devc->trigger_type); |
02d5c0d8 BV |
544 | |
545 | return SR_OK; | |
e52e712d MS |
546 | } |
547 | ||
79914b3a UH |
548 | SR_PRIV int sl2_set_capture_ratio(const struct sr_dev_inst *sdi, |
549 | uint64_t capture_ratio) | |
e52e712d MS |
550 | { |
551 | struct dev_context *devc; | |
552 | ||
553 | devc = sdi->priv; | |
554 | ||
555 | if (capture_ratio > 100) { | |
556 | sr_err("Invalid capture ratio: %" PRIu64 " %%.", capture_ratio); | |
557 | return SR_ERR_ARG; | |
558 | } | |
559 | ||
560 | sr_info("Capture ratio set to %" PRIu64 " %%.", capture_ratio); | |
561 | ||
562 | devc->capture_ratio = capture_ratio; | |
563 | ||
564 | return SR_OK; | |
565 | } | |
566 | ||
79914b3a UH |
567 | SR_PRIV int sl2_set_after_trigger_delay(const struct sr_dev_inst *sdi, |
568 | uint64_t after_trigger_delay) | |
e52e712d MS |
569 | { |
570 | struct dev_context *devc; | |
571 | ||
572 | devc = sdi->priv; | |
573 | ||
574 | if (after_trigger_delay > MAX_AFTER_TRIGGER_DELAY) { | |
575 | sr_err("Invalid after trigger delay: %" PRIu64 " ms.", | |
576 | after_trigger_delay); | |
577 | return SR_ERR_ARG; | |
578 | } | |
579 | ||
580 | sr_info("After trigger delay set to %" PRIu64 " ms.", | |
581 | after_trigger_delay); | |
582 | ||
583 | devc->after_trigger_delay = after_trigger_delay; | |
584 | ||
585 | return SR_OK; | |
586 | } | |
587 | ||
79914b3a | 588 | SR_PRIV void sl2_calculate_trigger_samples(const struct sr_dev_inst *sdi) |
e52e712d MS |
589 | { |
590 | struct dev_context *devc; | |
591 | uint64_t pre_trigger_samples, post_trigger_samples; | |
592 | uint16_t pre_trigger_bytes, post_trigger_bytes; | |
593 | uint8_t cr; | |
594 | ||
595 | devc = sdi->priv; | |
596 | cr = devc->capture_ratio; | |
597 | ||
598 | /* Ignore the capture ratio if no trigger is enabled. */ | |
599 | if (devc->trigger_type == TRIGGER_TYPE_NONE) | |
600 | cr = 0; | |
601 | ||
602 | pre_trigger_samples = (devc->limit_samples * cr) / 100; | |
603 | post_trigger_samples = (devc->limit_samples * (100 - cr)) / 100; | |
604 | ||
605 | /* | |
606 | * Increase the number of post trigger samples by one to compensate the | |
607 | * possible loss of a sample through integer rounding. | |
608 | */ | |
609 | if (pre_trigger_samples + post_trigger_samples != devc->limit_samples) | |
610 | post_trigger_samples++; | |
611 | ||
612 | /* | |
613 | * The device requires the number of samples in multiples of 8 which | |
614 | * will also be called sample bytes in the following. | |
615 | */ | |
616 | pre_trigger_bytes = pre_trigger_samples / 8; | |
617 | post_trigger_bytes = post_trigger_samples / 8; | |
618 | ||
619 | /* | |
620 | * Round up the number of sample bytes to ensure that at least the | |
621 | * requested number of samples will be acquired. Note that due to this | |
622 | * rounding the buffer to store these sample bytes needs to be at least | |
c824eb63 UH |
623 | * one sample byte larger than the minimal number of sample bytes |
624 | * needed to store the requested samples. | |
e52e712d MS |
625 | */ |
626 | if (pre_trigger_samples % 8 != 0) | |
627 | pre_trigger_bytes++; | |
628 | ||
629 | if (post_trigger_samples % 8 != 0) | |
630 | post_trigger_bytes++; | |
631 | ||
632 | sr_info("Pre trigger samples: %" PRIu64 ".", pre_trigger_samples); | |
633 | sr_info("Post trigger samples: %" PRIu64 ".", post_trigger_samples); | |
634 | sr_dbg("Pre trigger sample bytes: %" PRIu16 ".", pre_trigger_bytes); | |
635 | sr_dbg("Post trigger sample bytes: %" PRIu16 ".", post_trigger_bytes); | |
636 | ||
637 | devc->pre_trigger_samples = pre_trigger_samples; | |
638 | devc->pre_trigger_bytes = pre_trigger_bytes; | |
639 | devc->post_trigger_bytes = post_trigger_bytes; | |
640 | } | |
641 | ||
79914b3a | 642 | SR_PRIV int sl2_get_device_info(struct sr_usb_dev_inst usb, |
e52e712d MS |
643 | struct device_info *dev_info) |
644 | { | |
645 | struct drv_context *drvc; | |
646 | uint8_t buffer[PACKET_LENGTH]; | |
647 | int ret; | |
648 | ||
41812aca | 649 | drvc = ikalogic_scanalogic2_driver_info.context; |
e52e712d MS |
650 | |
651 | if (!dev_info) | |
652 | return SR_ERR_ARG; | |
653 | ||
654 | if (sr_usb_open(drvc->sr_ctx->libusb_ctx, &usb) != SR_OK) | |
655 | return SR_ERR; | |
656 | ||
657 | /* | |
658 | * Determine if a kernel driver is active on this interface and, if so, | |
659 | * detach it. | |
660 | */ | |
661 | if (libusb_kernel_driver_active(usb.devhdl, USB_INTERFACE) == 1) { | |
662 | ret = libusb_detach_kernel_driver(usb.devhdl, | |
663 | USB_INTERFACE); | |
664 | ||
665 | if (ret < 0) { | |
9526f2d4 | 666 | sr_err("Failed to detach kernel driver: %s.", |
e52e712d MS |
667 | libusb_error_name(ret)); |
668 | libusb_close(usb.devhdl); | |
669 | return SR_ERR; | |
670 | } | |
671 | } | |
672 | ||
673 | ret = libusb_claim_interface(usb.devhdl, USB_INTERFACE); | |
674 | ||
675 | if (ret) { | |
676 | sr_err("Failed to claim interface: %s.", | |
677 | libusb_error_name(ret)); | |
678 | libusb_close(usb.devhdl); | |
679 | return SR_ERR; | |
680 | } | |
681 | ||
682 | memset(buffer, 0, sizeof(buffer)); | |
683 | ||
684 | /* | |
685 | * Reset the device to ensure it is in a proper state to request the | |
686 | * device information. | |
687 | */ | |
688 | buffer[0] = CMD_RESET; | |
79914b3a | 689 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
690 | sr_err("Resetting of device failed: %s.", |
691 | libusb_error_name(ret)); | |
692 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
693 | libusb_close(usb.devhdl); | |
694 | return SR_ERR; | |
695 | } | |
696 | ||
697 | buffer[0] = CMD_INFO; | |
79914b3a | 698 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
699 | sr_err("Requesting of device information failed: %s.", |
700 | libusb_error_name(ret)); | |
701 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
702 | libusb_close(usb.devhdl); | |
703 | return SR_ERR; | |
704 | } | |
705 | ||
79914b3a | 706 | if ((ret = sl2_transfer_in(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
707 | sr_err("Receiving of device information failed: %s.", |
708 | libusb_error_name(ret)); | |
709 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
710 | libusb_close(usb.devhdl); | |
711 | return SR_ERR; | |
712 | } | |
713 | ||
714 | memcpy(&(dev_info->serial), buffer + 1, sizeof(uint32_t)); | |
715 | dev_info->serial = GUINT32_FROM_LE(dev_info->serial); | |
716 | ||
717 | dev_info->fw_ver_major = buffer[5]; | |
718 | dev_info->fw_ver_minor = buffer[6]; | |
719 | ||
720 | buffer[0] = CMD_RESET; | |
79914b3a | 721 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
722 | sr_err("Device reset failed: %s.", libusb_error_name(ret)); |
723 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
724 | libusb_close(usb.devhdl); | |
725 | return SR_ERR; | |
726 | } | |
727 | ||
728 | /* | |
729 | * Set the device to idle state. If the device is not in idle state it | |
c824eb63 UH |
730 | * possibly will reset itself after a few seconds without being used |
731 | * and thereby close the connection. | |
e52e712d MS |
732 | */ |
733 | buffer[0] = CMD_IDLE; | |
79914b3a | 734 | if ((ret = sl2_transfer_out(usb.devhdl, buffer)) != PACKET_LENGTH) { |
e52e712d MS |
735 | sr_err("Failed to set device in idle state: %s.", |
736 | libusb_error_name(ret)); | |
737 | libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
738 | libusb_close(usb.devhdl); | |
739 | return SR_ERR; | |
740 | } | |
741 | ||
742 | ret = libusb_release_interface(usb.devhdl, USB_INTERFACE); | |
743 | ||
744 | if (ret < 0) { | |
9526f2d4 | 745 | sr_err("Failed to release interface: %s.", |
e52e712d MS |
746 | libusb_error_name(ret)); |
747 | libusb_close(usb.devhdl); | |
748 | return SR_ERR; | |
749 | } | |
750 | ||
751 | libusb_close(usb.devhdl); | |
752 | ||
753 | return SR_OK; | |
754 | } | |
755 | ||
79914b3a | 756 | SR_PRIV int sl2_transfer_in(libusb_device_handle *dev_handle, uint8_t *data) |
e52e712d MS |
757 | { |
758 | return libusb_control_transfer(dev_handle, USB_REQUEST_TYPE_IN, | |
fb8d593c | 759 | USB_HID_GET_REPORT, USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, |
1a46cc62 | 760 | (unsigned char *)data, PACKET_LENGTH, USB_TIMEOUT_MS); |
e52e712d MS |
761 | } |
762 | ||
79914b3a | 763 | SR_PRIV int sl2_transfer_out(libusb_device_handle *dev_handle, uint8_t *data) |
e52e712d MS |
764 | { |
765 | return libusb_control_transfer(dev_handle, USB_REQUEST_TYPE_OUT, | |
766 | USB_HID_SET_REPORT, USB_HID_REPORT_TYPE_FEATURE, USB_INTERFACE, | |
1a46cc62 | 767 | (unsigned char *)data, PACKET_LENGTH, USB_TIMEOUT_MS); |
e52e712d | 768 | } |