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6a25fa42 AZ |
1 | /* |
2 | * This file is part of the libsigrok project. | |
3 | * | |
5089a143 AZ |
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> | |
6a25fa42 AZ |
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 | ||
5089a143 AZ |
25 | #define H4032L_USB_TIMEOUT 500 |
26 | ||
27 | enum h4032l_cmd { | |
74c4c174 AV |
28 | CMD_RESET = 0x00b3, /* Also arms the logic analyzer. */ |
29 | CMD_CONFIGURE = 0x2b1a, | |
5089a143 AZ |
30 | CMD_STATUS = 0x4b3a, |
31 | CMD_GET = 0x6b5a | |
32 | }; | |
33 | ||
e80e1858 | 34 | struct h4032l_status_packet { |
5089a143 AZ |
35 | uint32_t magic; |
36 | uint32_t values; | |
37 | uint32_t status; | |
2bd5d17c UH |
38 | uint32_t usbxi_data; |
39 | uint32_t fpga_version; | |
5089a143 AZ |
40 | }; |
41 | ||
2958315d AV |
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 | ||
a5b9880e AV |
56 | static void finish_acquisition(struct sr_dev_inst *sdi) |
57 | { | |
2958315d | 58 | struct dev_context *devc = sdi->priv; |
a5b9880e AV |
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); | |
2958315d AV |
63 | |
64 | devc->num_transfers = 0; | |
65 | g_free(devc->transfers); | |
a5b9880e AV |
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; | |
2958315d AV |
72 | unsigned int i; |
73 | ||
74 | if ((transfer->buffer != (unsigned char *)&devc->cmd_pkt) && | |
75 | (transfer->buffer != devc->buffer)) { | |
76 | g_free(transfer->buffer); | |
77 | } | |
a5b9880e AV |
78 | |
79 | transfer->buffer = NULL; | |
80 | libusb_free_transfer(transfer); | |
a5b9880e | 81 | |
2958315d AV |
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); | |
a5b9880e AV |
91 | } |
92 | ||
43d86035 AV |
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 | ||
5089a143 | 104 | SR_PRIV int h4032l_receive_data(int fd, int revents, void *cb_data) |
6a25fa42 | 105 | { |
5089a143 AZ |
106 | struct timeval tv; |
107 | struct drv_context *drvc; | |
6a25fa42 AZ |
108 | |
109 | (void)fd; | |
5089a143 AZ |
110 | (void)revents; |
111 | ||
112 | drvc = (struct drv_context *)cb_data; | |
113 | ||
114 | tv.tv_sec = tv.tv_usec = 0; | |
115 | libusb_handle_events_timeout(drvc->sr_ctx->libusb_ctx, &tv); | |
6a25fa42 | 116 | |
5089a143 AZ |
117 | return TRUE; |
118 | } | |
6a25fa42 | 119 | |
43d86035 | 120 | void LIBUSB_CALL h4032l_data_transfer_callback(struct libusb_transfer *transfer) |
5089a143 AZ |
121 | { |
122 | const struct sr_dev_inst *sdi = transfer->user_data; | |
123 | struct dev_context *devc = sdi->priv; | |
43d86035 AV |
124 | uint32_t max_samples = transfer->actual_length / sizeof(uint32_t); |
125 | struct sr_datafeed_packet packet; | |
126 | struct sr_datafeed_logic logic; | |
127 | uint32_t *buffer; | |
128 | uint32_t number_samples; | |
129 | ||
130 | /* | |
131 | * If acquisition has already ended, just free any queued up | |
132 | * transfer that come in. | |
133 | */ | |
134 | if (devc->acq_aborted) { | |
135 | free_transfer(transfer); | |
136 | return; | |
137 | } | |
138 | ||
139 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) | |
140 | sr_dbg("%s error: %d.", __func__, transfer->status); | |
141 | ||
142 | /* Cancel pending transfers. */ | |
143 | if (transfer->actual_length == 0) { | |
144 | resubmit_transfer(transfer); | |
145 | return; | |
146 | } | |
147 | ||
148 | buffer = (uint32_t *)transfer->buffer; | |
149 | ||
150 | number_samples = (devc->remaining_samples < max_samples) ? | |
151 | devc->remaining_samples : max_samples; | |
152 | devc->remaining_samples -= number_samples; | |
153 | packet.type = SR_DF_LOGIC; | |
154 | packet.payload = &logic; | |
155 | logic.length = number_samples * sizeof(uint32_t); | |
156 | logic.unitsize = sizeof(uint32_t); | |
157 | logic.data = buffer; | |
158 | sr_session_send(sdi, &packet); | |
159 | sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples, | |
160 | buffer[0], buffer[1]); | |
161 | ||
162 | /* Close data receiving. */ | |
163 | if (devc->remaining_samples == 0) { | |
43d86035 AV |
164 | if (buffer[number_samples] != H4032L_END_PACKET_MAGIC) |
165 | sr_err("Mismatch magic number of end poll."); | |
2958315d AV |
166 | |
167 | abort_acquisition(devc); | |
168 | free_transfer(transfer); | |
43d86035 | 169 | } else { |
2958315d AV |
170 | if (((devc->submitted_transfers - 1) * H4032L_DATA_BUFFER_SIZE) < |
171 | (int32_t)(devc->remaining_samples * sizeof(uint32_t))) | |
172 | resubmit_transfer(transfer); | |
173 | else | |
174 | free_transfer(transfer); | |
43d86035 AV |
175 | } |
176 | } | |
177 | ||
178 | void LIBUSB_CALL h4032l_usb_callback(struct libusb_transfer *transfer) | |
179 | { | |
180 | const struct sr_dev_inst *sdi = transfer->user_data; | |
181 | struct dev_context *devc = sdi->priv; | |
5089a143 AZ |
182 | struct sr_usb_dev_inst *usb = sdi->conn; |
183 | gboolean cmd = FALSE; | |
43d86035 | 184 | uint32_t max_samples = transfer->actual_length / sizeof(uint32_t); |
5089a143 AZ |
185 | uint32_t *buffer; |
186 | struct h4032l_status_packet *status; | |
187 | struct sr_datafeed_packet packet; | |
188 | struct sr_datafeed_logic logic; | |
189 | uint32_t number_samples; | |
190 | int ret; | |
6a25fa42 | 191 | |
a5b9880e AV |
192 | /* |
193 | * If acquisition has already ended, just free any queued up | |
194 | * transfers that come in. | |
195 | */ | |
196 | if (devc->acq_aborted) { | |
197 | free_transfer(transfer); | |
198 | return; | |
199 | } | |
200 | ||
74c4c174 AV |
201 | if (transfer->status != LIBUSB_TRANSFER_COMPLETED) |
202 | sr_dbg("%s error: %d.", __func__, transfer->status); | |
6a25fa42 | 203 | |
5089a143 AZ |
204 | buffer = (uint32_t *)transfer->buffer; |
205 | ||
206 | switch (devc->status) { | |
207 | case H4032L_STATUS_IDLE: | |
208 | sr_err("USB callback called in idle."); | |
209 | break; | |
210 | case H4032L_STATUS_CMD_CONFIGURE: | |
211 | /* Select status request as next. */ | |
212 | cmd = TRUE; | |
213 | devc->cmd_pkt.cmd = CMD_STATUS; | |
214 | devc->status = H4032L_STATUS_CMD_STATUS; | |
215 | break; | |
216 | case H4032L_STATUS_CMD_STATUS: | |
217 | /* Select status request as next. */ | |
218 | devc->status = H4032L_STATUS_RESPONSE_STATUS; | |
219 | break; | |
220 | case H4032L_STATUS_RESPONSE_STATUS: | |
221 | /* | |
222 | * Check magic and if status is complete, then select | |
223 | * First Transfer as next. | |
224 | */ | |
225 | status = (struct h4032l_status_packet *)transfer->buffer; | |
28f2d07f | 226 | if (status->magic != H4032L_STATUS_PACKET_MAGIC) |
74c4c174 | 227 | devc->status = H4032L_STATUS_RESPONSE_STATUS; |
28f2d07f | 228 | else if (status->status == 2) |
5089a143 | 229 | devc->status = H4032L_STATUS_RESPONSE_STATUS_CONTINUE; |
28f2d07f | 230 | else |
5089a143 | 231 | devc->status = H4032L_STATUS_RESPONSE_STATUS_RETRY; |
5089a143 AZ |
232 | break; |
233 | case H4032L_STATUS_RESPONSE_STATUS_RETRY: | |
234 | devc->status = H4032L_STATUS_CMD_STATUS; | |
235 | devc->cmd_pkt.cmd = CMD_STATUS; | |
236 | cmd = TRUE; | |
237 | break; | |
238 | case H4032L_STATUS_RESPONSE_STATUS_CONTINUE: | |
239 | devc->status = H4032L_STATUS_CMD_GET; | |
240 | devc->cmd_pkt.cmd = CMD_GET; | |
241 | cmd = TRUE; | |
242 | break; | |
243 | case H4032L_STATUS_CMD_GET: | |
244 | devc->status = H4032L_STATUS_FIRST_TRANSFER; | |
43d86035 AV |
245 | /* Trigger has been captured. */ |
246 | std_session_send_df_header(sdi); | |
5089a143 AZ |
247 | break; |
248 | case H4032L_STATUS_FIRST_TRANSFER: | |
74c4c174 | 249 | /* Drop packets until H4032L_START_PACKET_MAGIC. */ |
5089a143 | 250 | if (buffer[0] != H4032L_START_PACKET_MAGIC) { |
74c4c174 | 251 | sr_dbg("Mismatch magic number of start poll."); |
5089a143 AZ |
252 | break; |
253 | } | |
254 | devc->status = H4032L_STATUS_TRANSFER; | |
255 | max_samples--; | |
256 | buffer++; | |
97200156 | 257 | /* Fallthrough. */ |
5089a143 | 258 | case H4032L_STATUS_TRANSFER: |
28f2d07f | 259 | number_samples = (devc->remaining_samples < max_samples) ? |
43d86035 | 260 | devc->remaining_samples : max_samples; |
5089a143 AZ |
261 | devc->remaining_samples -= number_samples; |
262 | packet.type = SR_DF_LOGIC; | |
263 | packet.payload = &logic; | |
264 | logic.length = number_samples * sizeof(uint32_t); | |
265 | logic.unitsize = sizeof(uint32_t); | |
266 | logic.data = buffer; | |
267 | sr_session_send(sdi, &packet); | |
268 | sr_dbg("Remaining: %d %08X %08X.", devc->remaining_samples, | |
28f2d07f | 269 | buffer[0], buffer[1]); |
5089a143 AZ |
270 | break; |
271 | } | |
272 | ||
43d86035 AV |
273 | /* Start data receiving. */ |
274 | if (devc->status == H4032L_STATUS_TRANSFER) { | |
275 | if ((ret = h4032l_start_data_transfers(sdi)) != SR_OK) { | |
276 | sr_err("Can not start data transfers: %d", ret); | |
277 | devc->status = H4032L_STATUS_IDLE; | |
278 | } | |
279 | } else if (devc->status != H4032L_STATUS_IDLE) { | |
5089a143 AZ |
280 | if (cmd) { |
281 | /* Setup new USB cmd packet, reuse transfer object. */ | |
282 | sr_dbg("New command: %d.", devc->status); | |
283 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
284 | 2 | LIBUSB_ENDPOINT_OUT, | |
285 | (unsigned char *)&devc->cmd_pkt, | |
286 | sizeof(struct h4032l_cmd_pkt), | |
28f2d07f AV |
287 | h4032l_usb_callback, |
288 | (void *)sdi, H4032L_USB_TIMEOUT); | |
5089a143 AZ |
289 | } else { |
290 | /* Setup new USB poll packet, reuse transfer object. */ | |
291 | sr_dbg("Poll: %d.", devc->status); | |
292 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
293 | 6 | LIBUSB_ENDPOINT_IN, | |
294 | devc->buffer, ARRAY_SIZE(devc->buffer), | |
295 | h4032l_usb_callback, | |
296 | (void *)sdi, H4032L_USB_TIMEOUT); | |
297 | } | |
4868f15a | 298 | /* Send prepared USB packet. */ |
5089a143 AZ |
299 | if ((ret = libusb_submit_transfer(transfer)) != 0) { |
300 | sr_err("Failed to submit transfer: %s.", | |
301 | libusb_error_name(ret)); | |
302 | devc->status = H4032L_STATUS_IDLE; | |
303 | } | |
304 | } else { | |
305 | sr_dbg("Now idle."); | |
306 | } | |
307 | ||
308 | if (devc->status == H4032L_STATUS_IDLE) | |
a5b9880e | 309 | free_transfer(transfer); |
5089a143 AZ |
310 | } |
311 | ||
312 | uint16_t h4032l_voltage2pwm(double voltage) | |
313 | { | |
314 | /* | |
315 | * word PwmA - channel A Vref PWM value, pseudocode: | |
316 | * -6V < ThresholdVoltage < +6V | |
317 | * Vref = 1.8 - ThresholdVoltage | |
318 | * if Vref > 10.0 | |
319 | * Vref = 10.0 | |
320 | * if Vref < -5.0 | |
321 | * Vref = -5.0 | |
322 | * pwm = ToInt((Vref + 5.0) / 15.0 * 4096.0) | |
323 | * if pwm > 4095 | |
324 | * pwm = 4095 | |
325 | */ | |
326 | voltage = 1.8 - voltage; | |
327 | if (voltage > 10.0) | |
328 | voltage = 10.0; | |
329 | else if (voltage < -5.0) | |
330 | voltage = -5.0; | |
331 | ||
332 | return (uint16_t) ((voltage + 5.0) * (4096.0 / 15.0)); | |
333 | } | |
334 | ||
43d86035 AV |
335 | SR_PRIV int h4032l_start_data_transfers(const struct sr_dev_inst *sdi) |
336 | { | |
337 | struct dev_context *devc = sdi->priv; | |
338 | struct sr_usb_dev_inst *usb = sdi->conn; | |
339 | struct libusb_transfer *transfer; | |
2958315d AV |
340 | uint8_t *buffer; |
341 | unsigned int num_transfers; | |
342 | unsigned int i; | |
43d86035 AV |
343 | int ret; |
344 | ||
2958315d | 345 | devc->submitted_transfers = 0; |
43d86035 | 346 | |
2958315d AV |
347 | /* |
348 | * Set number of data transfers regarding to size of buffer. | |
349 | * FPGA version 0 can't transfer multiple transfers at once. | |
350 | */ | |
351 | if ((num_transfers = MIN(devc->remaining_samples * sizeof(uint32_t) / | |
352 | H4032L_DATA_BUFFER_SIZE, devc->fpga_version ? | |
353 | H4032L_DATA_TRANSFER_MAX_NUM : 1)) == 0) | |
354 | num_transfers = 1; | |
355 | ||
356 | g_free(devc->transfers); | |
357 | devc->transfers = g_try_malloc(sizeof(*devc->transfers) * num_transfers); | |
358 | if (!devc->transfers) { | |
359 | sr_err("USB transfers malloc failed."); | |
360 | return SR_ERR_MALLOC; | |
43d86035 AV |
361 | } |
362 | ||
2958315d AV |
363 | devc->num_transfers = num_transfers; |
364 | for (i = 0; i < num_transfers; i++) { | |
365 | if (!(buffer = g_malloc(H4032L_DATA_BUFFER_SIZE))) { | |
366 | sr_err("USB transfer buffer malloc failed."); | |
367 | return SR_ERR_MALLOC; | |
368 | } | |
369 | transfer = libusb_alloc_transfer(0); | |
370 | ||
371 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
372 | 6 | LIBUSB_ENDPOINT_IN, | |
373 | buffer, H4032L_DATA_BUFFER_SIZE, | |
374 | h4032l_data_transfer_callback, | |
375 | (void *)sdi, H4032L_USB_TIMEOUT); | |
376 | ||
377 | /* Send prepared usb packet. */ | |
378 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
379 | sr_err("Failed to submit transfer: %s.", | |
380 | libusb_error_name(ret)); | |
381 | libusb_free_transfer(transfer); | |
382 | g_free(buffer); | |
383 | abort_acquisition(devc); | |
384 | return SR_ERR; | |
385 | } | |
386 | devc->transfers[i] = transfer; | |
387 | devc->submitted_transfers++; | |
388 | } | |
43d86035 | 389 | |
2958315d | 390 | return SR_OK; |
43d86035 AV |
391 | } |
392 | ||
5089a143 AZ |
393 | SR_PRIV int h4032l_start(const struct sr_dev_inst *sdi) |
394 | { | |
395 | struct dev_context *devc = sdi->priv; | |
396 | struct sr_usb_dev_inst *usb = sdi->conn; | |
397 | struct libusb_transfer *transfer; | |
74c4c174 | 398 | unsigned char buffer[] = {0x0f, 0x03, 0x03, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}; |
5089a143 AZ |
399 | int ret; |
400 | ||
74c4c174 AV |
401 | /* Send reset command to arm the logic analyzer. */ |
402 | if ((ret = libusb_control_transfer(usb->devhdl, | |
403 | LIBUSB_REQUEST_TYPE_VENDOR | LIBUSB_ENDPOINT_OUT, CMD_RESET, | |
404 | 0x00, 0x00, buffer, ARRAY_SIZE(buffer), H4032L_USB_TIMEOUT)) < 0) { | |
28f2d07f AV |
405 | sr_err("Failed to send vendor request %s.", |
406 | libusb_error_name(ret)); | |
74c4c174 AV |
407 | return SR_ERR; |
408 | } | |
409 | ||
410 | /* Wait for reset vendor request. */ | |
411 | g_usleep(20 * 1000); | |
412 | ||
413 | /* Send configure command. */ | |
5089a143 AZ |
414 | devc->cmd_pkt.cmd = CMD_CONFIGURE; |
415 | devc->status = H4032L_STATUS_CMD_CONFIGURE; | |
416 | devc->remaining_samples = devc->cmd_pkt.sample_size; | |
417 | ||
418 | transfer = libusb_alloc_transfer(0); | |
419 | ||
420 | libusb_fill_bulk_transfer(transfer, usb->devhdl, | |
421 | 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt, | |
422 | sizeof(struct h4032l_cmd_pkt), h4032l_usb_callback, | |
423 | (void *)sdi, H4032L_USB_TIMEOUT); | |
424 | ||
425 | if ((ret = libusb_submit_transfer(transfer)) != 0) { | |
28f2d07f AV |
426 | sr_err("Failed to submit transfer: %s.", |
427 | libusb_error_name(ret)); | |
5089a143 AZ |
428 | libusb_free_transfer(transfer); |
429 | return SR_ERR; | |
430 | } | |
431 | ||
2958315d AV |
432 | devc->transfers = g_malloc0(sizeof(*devc->transfers)); |
433 | if (!devc->transfers) { | |
434 | sr_err("USB start transfer malloc failed."); | |
435 | return SR_ERR_MALLOC; | |
436 | } | |
437 | ||
438 | devc->submitted_transfers++; | |
439 | devc->num_transfers = 1; | |
440 | devc->transfers[0] = transfer; | |
441 | ||
442 | return SR_OK; | |
443 | } | |
444 | ||
445 | SR_PRIV int h4032l_stop(struct sr_dev_inst *sdi) | |
446 | { | |
447 | abort_acquisition(sdi->priv); | |
448 | ||
5089a143 AZ |
449 | return SR_OK; |
450 | } | |
451 | ||
452 | SR_PRIV int h4032l_dev_open(struct sr_dev_inst *sdi) | |
453 | { | |
454 | struct drv_context *drvc = sdi->driver->context; | |
455 | struct sr_usb_dev_inst *usb = sdi->conn; | |
456 | struct libusb_device_descriptor des; | |
457 | libusb_device **devlist; | |
458 | int ret = SR_ERR, i, device_count; | |
459 | char connection_id[64]; | |
460 | ||
461 | device_count = libusb_get_device_list(drvc->sr_ctx->libusb_ctx, &devlist); | |
462 | if (device_count < 0) { | |
463 | sr_err("Failed to get device list: %s.", | |
464 | libusb_error_name(device_count)); | |
465 | return SR_ERR; | |
466 | } | |
467 | ||
468 | for (i = 0; i < device_count; i++) { | |
469 | libusb_get_device_descriptor(devlist[i], &des); | |
470 | ||
471 | if (des.idVendor != H4032L_USB_VENDOR || | |
472 | des.idProduct != H4032L_USB_PRODUCT) | |
473 | continue; | |
474 | ||
475 | if ((sdi->status == SR_ST_INITIALIZING) || | |
476 | (sdi->status == SR_ST_INACTIVE)) { | |
477 | /* Check device by its physical USB bus/port address. */ | |
28f2d07f AV |
478 | if (usb_get_port_path(devlist[i], connection_id, sizeof(connection_id)) < 0) |
479 | continue; | |
480 | ||
5089a143 AZ |
481 | if (strcmp(sdi->connection_id, connection_id)) |
482 | /* This is not the one. */ | |
483 | continue; | |
484 | } | |
485 | ||
486 | if (!(ret = libusb_open(devlist[i], &usb->devhdl))) { | |
487 | if (usb->address == 0xff) | |
488 | /* | |
489 | * First time we touch this device after FW | |
490 | * upload, so we don't know the address yet. | |
491 | */ | |
492 | usb->address = | |
28f2d07f | 493 | libusb_get_device_address(devlist[i]); |
5089a143 AZ |
494 | } else { |
495 | sr_err("Failed to open device: %s.", | |
496 | libusb_error_name(ret)); | |
497 | ret = SR_ERR; | |
498 | break; | |
499 | } | |
500 | ||
501 | ret = SR_OK; | |
502 | break; | |
503 | } | |
504 | ||
505 | libusb_free_device_list(devlist, 1); | |
506 | return ret; | |
6a25fa42 | 507 | } |
7a7afc00 AV |
508 | |
509 | SR_PRIV int h4032l_get_fpga_version(const struct sr_dev_inst *sdi) | |
510 | { | |
511 | struct dev_context *devc = sdi->priv; | |
512 | struct sr_usb_dev_inst *usb = sdi->conn; | |
513 | struct h4032l_status_packet *status; | |
514 | int transferred; | |
515 | int i, ret; | |
516 | ||
517 | /* Set command to status. */ | |
518 | devc->cmd_pkt.magic = H4032L_CMD_PKT_MAGIC; | |
519 | devc->cmd_pkt.cmd = CMD_STATUS; | |
520 | ||
521 | /* Send status request. */ | |
522 | if ((ret = libusb_bulk_transfer(usb->devhdl, | |
523 | 2 | LIBUSB_ENDPOINT_OUT, (unsigned char *)&devc->cmd_pkt, | |
524 | sizeof(struct h4032l_cmd_pkt), &transferred, H4032L_USB_TIMEOUT)) < 0) { | |
525 | sr_err("Unable to send FPGA version request: %s.", | |
526 | libusb_error_name(ret)); | |
527 | return SR_ERR; | |
528 | } | |
529 | ||
530 | /* Attempt to get FGPA version. */ | |
531 | for (i = 0; i < 10; i++) { | |
532 | if ((ret = libusb_bulk_transfer(usb->devhdl, | |
533 | 6 | LIBUSB_ENDPOINT_IN, devc->buffer, | |
534 | ARRAY_SIZE(devc->buffer), &transferred, H4032L_USB_TIMEOUT)) < 0) { | |
535 | sr_err("Unable to receive FPGA version: %s.", | |
536 | libusb_error_name(ret)); | |
537 | return SR_ERR; | |
538 | } | |
539 | status = (struct h4032l_status_packet *)devc->buffer; | |
540 | if (status->magic == H4032L_STATUS_PACKET_MAGIC) { | |
541 | sr_dbg("FPGA version: 0x%x.", status->fpga_version); | |
542 | devc->fpga_version = status->fpga_version; | |
543 | return SR_OK; | |
544 | } | |
545 | } | |
546 | ||
547 | sr_err("Unable to get FPGA version."); | |
548 | ||
549 | return SR_ERR; | |
550 | } |