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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2016 Andreas Zschunke <andreas.zschunke@gmx.net> | |
5 | * Copyright (C) 2017 Andrej Valek <andy@skyrain.eu> | |
6 | * Copyright (C) 2017 Uwe Hermann <uwe@hermann-uwe.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 <config.h> | |
23 | #include "protocol.h" | |
24 | ||
25 | #define H4032L_USB_TIMEOUT 500 | |
26 | ||
27 | enum h4032l_cmd { | |
28 | CMD_RESET = 0x00b3, /* Also arms the logic analyzer. */ | |
29 | CMD_CONFIGURE = 0x2b1a, | |
30 | CMD_STATUS = 0x4b3a, | |
31 | CMD_GET = 0x6b5a | |
32 | }; | |
33 | ||
34 | struct h4032l_status_packet { | |
35 | uint32_t magic; | |
36 | uint32_t values; | |
37 | uint32_t status; | |
38 | uint32_t usbxi_data; | |
39 | uint32_t fpga_version; | |
40 | }; | |
41 | ||
42 | static void abort_acquisition(struct dev_context *devc) | |
43 | { | |
44 | int i; | |
45 | ||
46 | devc->acq_aborted = TRUE; | |
47 | ||
48 | for (i = devc->num_transfers - 1; i >= 0; i--) { | |
49 | if (devc->transfers[i]) | |
50 | libusb_cancel_transfer(devc->transfers[i]); | |
51 | } | |
52 | ||
53 | devc->status = H4032L_STATUS_IDLE; | |
54 | } | |
55 | ||
56 | static void finish_acquisition(struct sr_dev_inst *sdi) | |
57 | { | |
58 | struct dev_context *devc = sdi->priv; | |
59 | struct drv_context *drvc = sdi->driver->context; | |
60 | ||
61 | std_session_send_df_end(sdi); | |
62 | usb_source_remove(sdi->session, drvc->sr_ctx); | |
63 | ||
64 | devc->num_transfers = 0; | |
65 | g_free(devc->transfers); | |
66 | } | |
67 | ||
68 | static void free_transfer(struct libusb_transfer *transfer) | |
69 | { | |
70 | struct sr_dev_inst *sdi = transfer->user_data; | |
71 | struct dev_context *devc = sdi->priv; | |
72 | unsigned int i; | |
73 | ||
74 | if ((transfer->buffer != (unsigned char *)&devc->cmd_pkt) && | |
75 | (transfer->buffer != devc->buf)) { | |
76 | g_free(transfer->buffer); | |
77 | } | |
78 | ||
79 | transfer->buffer = NULL; | |
80 | libusb_free_transfer(transfer); | |
81 | ||
82 | for (i = 0; i < devc->num_transfers; i++) { | |
83 | if (devc->transfers[i] == transfer) { | |
84 | devc->transfers[i] = NULL; | |
85 | break; | |
86 | } | |
87 | } | |
88 | ||
89 | if (--devc->submitted_transfers == 0) | |
90 | finish_acquisition(sdi); | |
91 | } | |
92 | ||
93 | static void resubmit_transfer(struct libusb_transfer *transfer) | |
94 | { | |
95 | int ret; | |
96 | ||
97 | if ((ret = libusb_submit_transfer(transfer)) == LIBUSB_SUCCESS) | |
98 | return; | |
99 | ||
100 | sr_err("%s: %s", __func__, libusb_error_name(ret)); | |
101 | free_transfer(transfer); | |
102 | } | |
103 | ||
104 | static void send_data(struct sr_dev_inst *sdi, | |
105 | uint32_t *data, size_t sample_count) | |
106 | { | |
107 | struct dev_context *devc = sdi->priv; | |
108 | struct sr_datafeed_logic logic = { | |
109 | .length = sample_count * sizeof(uint32_t), | |
110 | .unitsize = sizeof(uint32_t), | |
111 | .data = data | |
112 | }; | |
113 | const struct sr_datafeed_packet packet = { | |
114 | .type = SR_DF_LOGIC, | |
115 | .payload = &logic | |
116 | }; | |
117 | size_t trigger_offset; | |
118 | ||
119 | if (devc->trigger_pos >= devc->sent_samples && | |
120 | devc->trigger_pos < (devc->sent_samples + sample_count)) { | |
121 | /* Get trigger position. */ | |
122 | trigger_offset = devc->trigger_pos - devc->sent_samples; | |
123 | logic.length = trigger_offset * sizeof(uint32_t); | |
124 | if (logic.length) | |
125 | sr_session_send(sdi, &packet); | |
126 | ||
127 | /* Send trigger position. */ | |
128 | std_session_send_df_trigger(sdi); | |
129 | ||
130 | /* Send rest of data. */ | |
131 | logic.length = (sample_count - trigger_offset) * sizeof(uint32_t); | |
132 | logic.data = data + trigger_offset; | |
133 | if (logic.length) | |
134 | sr_session_send(sdi, &packet); | |
135 | } else { | |
136 | sr_session_send(sdi, &packet); | |
137 | } | |
138 | ||
139 | devc->sent_samples += sample_count; | |
140 | } | |
141 | ||
142 | SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data) | |
143 | { | |
144 | struct timeval tv; | |
145 | struct drv_context *drvc; | |
146 | ||
147 | (void)fd; | |
148 | (void)revents; | |
149 | ||
150 | drvc = (struct drv_context *)cb_data; | |
151 | ||
152 | tv.tv_sec = tv.tv_usec = 0; | |
153 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
154 | ||
155 | return TRUE; | |
156 | } | |
157 | ||
158 | void LIBUSB_CALL h4032l_data_transfer_callback(struct libusb_transfer *transfer) | |
159 | { | |
160 | struct sr_dev_inst *const sdi = transfer->user_data; | |
161 | struct dev_context *const devc = sdi->priv; | |
162 | uint32_t max_samples = transfer->actual_length / sizeof(uint32_t); | |
163 | uint32_t *buf; | |
164 | uint32_t num_samples; | |
165 | ||
166 | /* | |
167 | * If acquisition has already ended, just free any queued up | |
168 | * transfer that come in. | |
169 | */ | |
170 | if (devc->acq_aborted) { | |
171 | free_transfer(transfer); | |
172 | return; | |
173 | } | |
174 | ||
175 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) | |
176 | sr_dbg("%s error: %d.", __func__, transfer->status); | |
177 | ||
178 | /* Cancel pending transfers. */ | |
179 | if (transfer->actual_length == 0) { | |
180 | resubmit_transfer(transfer); | |
181 | return; | |
182 | } | |
183 | ||
184 | buf = (uint32_t *)transfer->buffer; | |
185 | ||
186 | num_samples = MIN(devc->remaining_samples, max_samples); | |
187 | devc->remaining_samples -= num_samples; | |
188 | send_data(sdi, buf, num_samples); | |
189 | sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples, | |
190 | buf[0], buf[1]); | |
191 | ||
192 | /* Close data receiving. */ | |
193 | if (devc->remaining_samples == 0) { | |
194 | if (buf[num_samples] != H4032L_END_PACKET_MAGIC) | |
195 | sr_err("Mismatch magic number of end poll."); | |
196 | ||
197 | abort_acquisition(devc); | |
198 | free_transfer(transfer); | |
199 | } else { | |
200 | if (((devc->submitted_transfers - 1) * H4032L_DATA_BUFFER_SIZE) < | |
201 | (int32_t)(devc->remaining_samples * sizeof(uint32_t))) | |
202 | resubmit_transfer(transfer); | |
203 | else | |
204 | free_transfer(transfer); | |
205 | } | |
206 | } | |
207 | ||
208 | void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer) | |
209 | { | |
210 | struct sr_dev_inst *const sdi = transfer->user_data; | |
211 | struct dev_context *const devc = sdi->priv; | |
212 | struct sr_usb_dev_inst *usb = sdi->conn; | |
213 | gboolean cmd = FALSE; | |
214 | uint32_t max_samples = transfer->actual_length / sizeof(uint32_t); | |
215 | uint32_t *buf; | |
216 | struct h4032l_status_packet *status; | |
217 | uint32_t num_samples; | |
218 | int ret; | |
219 | ||
220 | /* | |
221 | * If acquisition has already ended, just free any queued up | |
222 | * transfers that come in. | |
223 | */ | |
224 | if (devc->acq_aborted) { | |
225 | free_transfer(transfer); | |
226 | return; | |
227 | } | |
228 | ||
229 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) | |
230 | sr_dbg("%s error: %d.", __func__, transfer->status); | |
231 | ||
232 | buf = (uint32_t *)transfer->buffer; | |
233 | ||
234 | switch (devc->status) { | |
235 | case H4032L_STATUS_IDLE: | |
236 | sr_err("USB callback called in idle."); | |
237 | break; | |
238 | case H4032L_STATUS_CMD_CONFIGURE: | |
239 | /* Select status request as next. */ | |
240 | cmd = TRUE; | |
241 | devc->cmd_pkt.cmd = CMD_STATUS; | |
242 | devc->status = H4032L_STATUS_CMD_STATUS; | |
243 | break; | |
244 | case H4032L_STATUS_CMD_STATUS: | |
245 | /* Select status request as next. */ | |
246 | devc->status = H4032L_STATUS_RESPONSE_STATUS; | |
247 | break; | |
248 | case H4032L_STATUS_RESPONSE_STATUS: | |
249 | /* | |
250 | * Check magic and if status is complete, then select | |
251 | * First Transfer as next. | |
252 | */ | |
253 | status = (struct h4032l_status_packet *)transfer->buffer; | |
254 | if (status->magic != H4032L_STATUS_PACKET_MAGIC) | |
255 | devc->status = H4032L_STATUS_RESPONSE_STATUS; | |
256 | else if (status->status == 2) | |
257 | devc->status = H4032L_STATUS_RESPONSE_STATUS_CONTINUE; | |
258 | else | |
259 | devc->status = H4032L_STATUS_RESPONSE_STATUS_RETRY; | |
260 | break; | |
261 | case H4032L_STATUS_RESPONSE_STATUS_RETRY: | |
262 | devc->status = H4032L_STATUS_CMD_STATUS; | |
263 | devc->cmd_pkt.cmd = CMD_STATUS; | |
264 | cmd = TRUE; | |
265 | break; | |
266 | case H4032L_STATUS_RESPONSE_STATUS_CONTINUE: | |
267 | devc->status = H4032L_STATUS_CMD_GET; | |
268 | devc->cmd_pkt.cmd = CMD_GET; | |
269 | cmd = TRUE; | |
270 | break; | |
271 | case H4032L_STATUS_CMD_GET: | |
272 | devc->status = H4032L_STATUS_FIRST_TRANSFER; | |
273 | /* Trigger has been captured. */ | |
274 | std_session_send_df_header(sdi); | |
275 | break; | |
276 | case H4032L_STATUS_FIRST_TRANSFER: | |
277 | /* Drop packets until H4032L_START_PACKET_MAGIC. */ | |
278 | if (buf[0] != H4032L_START_PACKET_MAGIC) { | |
279 | sr_dbg("Mismatch magic number of start poll."); | |
280 | break; | |
281 | } | |
282 | devc->status = H4032L_STATUS_TRANSFER; | |
283 | max_samples--; | |
284 | buf++; | |
285 | /* Fallthrough. */ | |
286 | case H4032L_STATUS_TRANSFER: | |
287 | num_samples = MIN(devc->remaining_samples, max_samples); | |
288 | devc->remaining_samples -= num_samples; | |
289 | send_data(sdi, buf, num_samples); | |
290 | sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples, | |
291 | buf[0], buf[1]); | |
292 | break; | |
293 | } | |
294 | ||
295 | /* Start data receiving. */ | |
296 | if (devc->status == H4032L_STATUS_TRANSFER) { | |
297 | if ((ret = h4032l_start_data_transfers(sdi)) != SR_OK) { | |
298 | sr_err("Can not start data transfers: %d", ret); | |
299 | devc->status = H4032L_STATUS_IDLE; | |
300 | } | |
301 | } else if (devc->status != H4032L_STATUS_IDLE) { | |
302 | if (cmd) { | |
303 | /* Setup new USB cmd packet, reuse transfer object. */ | |
304 | sr_dbg("New command: %d.", devc->status); | |
305 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
306 | 2 | LIBUSB_ENDPOINT_OUT, | |
307 | (unsigned char *)&devc->cmd_pkt, | |
308 | sizeof(struct h4032l_cmd_pkt), | |
309 | h4032l_usb_callback, | |
310 | (void *)sdi, H4032L_USB_TIMEOUT); | |
311 | } else { | |
312 | /* Setup new USB poll packet, reuse transfer object. */ | |
313 | sr_dbg("Poll: %d.", devc->status); | |
314 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
315 | 6 | LIBUSB_ENDPOINT_IN, | |
316 | devc->buf, ARRAY_SIZE(devc->buf), | |
317 | h4032l_usb_callback, | |
318 | (void *)sdi, H4032L_USB_TIMEOUT); | |
319 | } | |
320 | /* Send prepared USB packet. */ | |
321 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
322 | sr_err("Failed to submit transfer: %s.", | |
323 | libusb_error_name(ret)); | |
324 | devc->status = H4032L_STATUS_IDLE; | |
325 | } | |
326 | } else { | |
327 | sr_dbg("Now idle."); | |
328 | } | |
329 | ||
330 | if (devc->status == H4032L_STATUS_IDLE) | |
331 | free_transfer(transfer); | |
332 | } | |
333 | ||
334 | uint16_t h4032l_voltage2pwm(double voltage) | |
335 | { | |
336 | /* | |
337 | * word PwmA - channel A Vref PWM value, pseudocode: | |
338 | * -6V < ThresholdVoltage < +6V | |
339 | * Vref = 1.8 - ThresholdVoltage | |
340 | * if Vref > 10.0 | |
341 | * Vref = 10.0 | |
342 | * if Vref < -5.0 | |
343 | * Vref = -5.0 | |
344 | * pwm = ToInt((Vref + 5.0) / 15.0 * 4096.0) | |
345 | * if pwm > 4095 | |
346 | * pwm = 4095 | |
347 | */ | |
348 | voltage = 1.8 - voltage; | |
349 | if (voltage > 10.0) | |
350 | voltage = 10.0; | |
351 | else if (voltage < -5.0) | |
352 | voltage = -5.0; | |
353 | ||
354 | return (uint16_t) ((voltage + 5.0) * (4096.0 / 15.0)); | |
355 | } | |
356 | ||
357 | SR_PRIV int h4032l_start_data_transfers(const struct sr_dev_inst *sdi) | |
358 | { | |
359 | struct dev_context *devc = sdi->priv; | |
360 | struct sr_usb_dev_inst *usb = sdi->conn; | |
361 | struct libusb_transfer *transfer; | |
362 | uint8_t *buf; | |
363 | unsigned int num_transfers; | |
364 | unsigned int i; | |
365 | int ret; | |
366 | ||
367 | devc->submitted_transfers = 0; | |
368 | ||
369 | /* | |
370 | * Set number of data transfers regarding to size of buffer. | |
371 | * FPGA version 0 can't transfer multiple transfers at once. | |
372 | */ | |
373 | if ((num_transfers = MIN(devc->remaining_samples * sizeof(uint32_t) / | |
374 | H4032L_DATA_BUFFER_SIZE, devc->fpga_version ? | |
375 | H4032L_DATA_TRANSFER_MAX_NUM : 1)) == 0) | |
376 | num_transfers = 1; | |
377 | ||
378 | g_free(devc->transfers); | |
379 | devc->transfers = g_malloc(sizeof(*devc->transfers) * num_transfers); | |
380 | devc->num_transfers = num_transfers; | |
381 | ||
382 | for (i = 0; i < num_transfers; i++) { | |
383 | buf = g_malloc(H4032L_DATA_BUFFER_SIZE); | |
384 | transfer = libusb_alloc_transfer(0); | |
385 | ||
386 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
387 | 6 | LIBUSB_ENDPOINT_IN, | |
388 | buf, H4032L_DATA_BUFFER_SIZE, | |
389 | h4032l_data_transfer_callback, | |
390 | (void *)sdi, H4032L_USB_TIMEOUT); | |
391 | ||
392 | /* Send prepared usb packet. */ | |
393 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
394 | sr_err("Failed to submit transfer: %s.", | |
395 | libusb_error_name(ret)); | |
396 | libusb_free_transfer(transfer); | |
397 | g_free(buf); | |
398 | abort_acquisition(devc); | |
399 | return SR_ERR; | |
400 | } | |
401 | devc->transfers[i] = transfer; | |
402 | devc->submitted_transfers++; | |
403 | } | |
404 | ||
405 | return SR_OK; | |
406 | } | |
407 | ||
408 | SR_PRIV int h4032l_start(const struct sr_dev_inst *sdi) | |
409 | { | |
410 | struct dev_context *devc = sdi->priv; | |
411 | struct sr_usb_dev_inst *usb = sdi->conn; | |
412 | struct libusb_transfer *transfer; | |
413 | unsigned char buf[] = {0x0f, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; | |
414 | int ret; | |
415 | ||
416 | /* Send reset command to arm the logic analyzer. */ | |
417 | if ((ret = libusb_control_transfer(usb->devhdl, | |
418 | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, CMD_RESET, | |
419 | 0x00, 0x00, buf, ARRAY_SIZE(buf), H4032L_USB_TIMEOUT)) < 0) { | |
420 | sr_err("Failed to send vendor request %s.", | |
421 | libusb_error_name(ret)); | |
422 | return SR_ERR; | |
423 | } | |
424 | ||
425 | /* Wait for reset vendor request. */ | |
426 | g_usleep(20 * 1000); | |
427 | ||
428 | /* Send configure command. */ | |
429 | devc->cmd_pkt.cmd = CMD_CONFIGURE; | |
430 | devc->status = H4032L_STATUS_CMD_CONFIGURE; | |
431 | devc->remaining_samples = devc->cmd_pkt.sample_size; | |
432 | ||
433 | transfer = libusb_alloc_transfer(0); | |
434 | ||
435 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
436 | 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt, | |
437 | sizeof(struct h4032l_cmd_pkt), h4032l_usb_callback, | |
438 | (void *)sdi, H4032L_USB_TIMEOUT); | |
439 | ||
440 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
441 | sr_err("Failed to submit transfer: %s.", | |
442 | libusb_error_name(ret)); | |
443 | libusb_free_transfer(transfer); | |
444 | return SR_ERR; | |
445 | } | |
446 | ||
447 | devc->transfers = g_malloc0(sizeof(*devc->transfers)); | |
448 | devc->submitted_transfers++; | |
449 | devc->num_transfers = 1; | |
450 | devc->transfers[0] = transfer; | |
451 | ||
452 | return SR_OK; | |
453 | } | |
454 | ||
455 | SR_PRIV int h4032l_stop(struct sr_dev_inst *sdi) | |
456 | { | |
457 | abort_acquisition(sdi->priv); | |
458 | ||
459 | return SR_OK; | |
460 | } | |
461 | ||
462 | SR_PRIV int h4032l_dev_open(struct sr_dev_inst *sdi) | |
463 | { | |
464 | struct drv_context *drvc = sdi->driver->context; | |
465 | struct sr_usb_dev_inst *usb = sdi->conn; | |
466 | struct libusb_device_descriptor des; | |
467 | libusb_device **devlist; | |
468 | int ret = SR_ERR, i, device_count; | |
469 | char connection_id[64]; | |
470 | ||
471 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
472 | if (device_count < 0) { | |
473 | sr_err("Failed to get device list: %s.", | |
474 | libusb_error_name(device_count)); | |
475 | return SR_ERR; | |
476 | } | |
477 | ||
478 | for (i = 0; i < device_count; i++) { | |
479 | libusb_get_device_descriptor(devlist[i], &des); | |
480 | ||
481 | if (des.idVendor != H4032L_USB_VENDOR || | |
482 | des.idProduct != H4032L_USB_PRODUCT) | |
483 | continue; | |
484 | ||
485 | if ((sdi->status == SR_ST_INITIALIZING) || | |
486 | (sdi->status == SR_ST_INACTIVE)) { | |
487 | /* Check device by its physical USB bus/port address. */ | |
488 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) | |
489 | continue; | |
490 | ||
491 | if (strcmp(sdi->connection_id, connection_id)) | |
492 | /* This is not the one. */ | |
493 | continue; | |
494 | } | |
495 | ||
496 | if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { | |
497 | if (usb->address == 0xff) | |
498 | /* | |
499 | * First time we touch this device after FW | |
500 | * upload, so we don't know the address yet. | |
501 | */ | |
502 | usb->address = | |
503 | libusb_get_device_address(devlist[i]); | |
504 | } else { | |
505 | sr_err("Failed to open device: %s.", | |
506 | libusb_error_name(ret)); | |
507 | ret = SR_ERR; | |
508 | break; | |
509 | } | |
510 | ||
511 | ret = SR_OK; | |
512 | break; | |
513 | } | |
514 | ||
515 | libusb_free_device_list(devlist, 1); | |
516 | return ret; | |
517 | } | |
518 | ||
519 | SR_PRIV int h4032l_get_fpga_version(const struct sr_dev_inst *sdi) | |
520 | { | |
521 | struct dev_context *devc = sdi->priv; | |
522 | struct sr_usb_dev_inst *usb = sdi->conn; | |
523 | struct h4032l_status_packet *status; | |
524 | int transferred; | |
525 | int i, ret; | |
526 | ||
527 | /* Set command to status. */ | |
528 | devc->cmd_pkt.magic = H4032L_CMD_PKT_MAGIC; | |
529 | devc->cmd_pkt.cmd = CMD_STATUS; | |
530 | ||
531 | /* Send status request. */ | |
532 | if ((ret = libusb_bulk_transfer(usb->devhdl, | |
533 | 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt, | |
534 | sizeof(struct h4032l_cmd_pkt), &transferred, H4032L_USB_TIMEOUT)) < 0) { | |
535 | sr_err("Unable to send FPGA version request: %s.", | |
536 | libusb_error_name(ret)); | |
537 | return SR_ERR; | |
538 | } | |
539 | ||
540 | /* Attempt to get FGPA version. */ | |
541 | for (i = 0; i < 10; i++) { | |
542 | if ((ret = libusb_bulk_transfer(usb->devhdl, | |
543 | 6 | LIBUSB_ENDPOINT_IN, devc->buf, | |
544 | ARRAY_SIZE(devc->buf), &transferred, H4032L_USB_TIMEOUT)) < 0) { | |
545 | sr_err("Unable to receive FPGA version: %s.", | |
546 | libusb_error_name(ret)); | |
547 | return SR_ERR; | |
548 | } | |
549 | status = (struct h4032l_status_packet *)devc->buf; | |
550 | if (status->magic == H4032L_STATUS_PACKET_MAGIC) { | |
551 | sr_dbg("FPGA version: 0x%x.", status->fpga_version); | |
552 | devc->fpga_version = status->fpga_version; | |
553 | return SR_OK; | |
554 | } | |
555 | } | |
556 | ||
557 | sr_err("Unable to get FPGA version."); | |
558 | ||
559 | return SR_ERR; | |
560 | } |