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jtag_interface: .speed can be NULL when not needed
[openocd.git] / src / jtag / drivers / opendous.c
blobb13cbe054a16e027257c43ac796eeffcf0b3e82c
1 /***************************************************************************
2 * *
3 * Copyright (C) 2009 by Cahya Wirawan <cahya@gmx.at> *
4 * Based on opendous driver by Vladimir Fonov *
5 * *
6 * Copyright (C) 2009 by Vladimir Fonov <vladimir.fonov@gmai.com> *
7 * Based on J-link driver by Juergen Stuber *
8 * *
9 * Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
10 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
11 * *
12 * Copyright (C) 2008 by Spencer Oliver *
13 * spen@spen-soft.co.uk *
14 * *
15 * This program is free software; you can redistribute it and/or modify *
16 * it under the terms of the GNU General Public License as published by *
17 * the Free Software Foundation; either version 2 of the License, or *
18 * (at your option) any later version. *
19 * *
20 * This program is distributed in the hope that it will be useful, *
21 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
23 * GNU General Public License for more details. *
24 * *
25 * You should have received a copy of the GNU General Public License *
26 * along with this program; if not, write to the *
27 * Free Software Foundation, Inc., *
28 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
29 ***************************************************************************/
30
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #include <jtag/interface.h>
36 #include <jtag/commands.h>
37 #include "libusb_common.h"
38 #include <string.h>
39 #include <sys/timeb.h>
40 #include <time.h>
41
42 #define ESTICK_VID 0x1781
43 #define ESTICK_PID 0xC0C0
44
45 #define OPENDOUS_VID 0x03EB
46 #define OPENDOUS_PID 0x204F
47
48 /* pid could be specified at runtime */
49 static uint16_t vids[] = { OPENDOUS_VID, ESTICK_VID, 0 };
50 static uint16_t pids[] = { OPENDOUS_PID, ESTICK_PID, 0 };
51
52 #define OPENDOUS_WRITE_ENDPOINT 0x02
53 #define OPENDOUS_READ_ENDPOINT 0x81
54
55 static unsigned int opendous_hw_jtag_version = 1;
56
57 #define OPENDOUS_USB_TIMEOUT 1000
58
59 #define OPENDOUS_USB_BUFFER_SIZE 360
60 #define OPENDOUS_IN_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
61 #define OPENDOUS_OUT_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
62
63 /* Global USB buffers */
64 static uint8_t usb_in_buffer[OPENDOUS_IN_BUFFER_SIZE];
65 static uint8_t usb_out_buffer[OPENDOUS_OUT_BUFFER_SIZE];
66
67 /* Constants for OPENDOUS command */
68
69 #define OPENDOUS_MAX_SPEED 66
70 #define OPENDOUS_MAX_TAP_TRANSMIT 350 /* even number is easier to handle */
71 #define OPENDOUS_MAX_INPUT_DATA (OPENDOUS_MAX_TAP_TRANSMIT*4)
72
73 #define OPENDOUS_TAP_BUFFER_SIZE 65536
74
75 #define MAX_PENDING_SCAN_RESULTS (OPENDOUS_MAX_INPUT_DATA)
76
77 /* JTAG usb commands */
78 #define JTAG_CMD_TAP_OUTPUT 0x0
79 #define JTAG_CMD_SET_TRST 0x1
80 #define JTAG_CMD_SET_SRST 0x2
81 #define JTAG_CMD_READ_INPUT 0x3
82 #define JTAG_CMD_TAP_OUTPUT_EMU 0x4
83 #define JTAG_CMD_SET_DELAY 0x5
84 #define JTAG_CMD_SET_SRST_TRST 0x6
85 #define JTAG_CMD_READ_CONFIG 0x7
86
87 /* External interface functions */
88 static int opendous_execute_queue(void);
89 static int opendous_init(void);
90 static int opendous_quit(void);
91
92 /* Queue command functions */
93 static void opendous_end_state(tap_state_t state);
94 static void opendous_state_move(void);
95 static void opendous_path_move(int num_states, tap_state_t *path);
96 static void opendous_runtest(int num_cycles);
97 static void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer,
98 int scan_size, struct scan_command *command);
99 static void opendous_reset(int trst, int srst);
100 static void opendous_simple_command(uint8_t command, uint8_t _data);
101 static int opendous_get_status(void);
102
103 /* opendous tap buffer functions */
104 static void opendous_tap_init(void);
105 static int opendous_tap_execute(void);
106 static void opendous_tap_ensure_space(int scans, int bits);
107 static void opendous_tap_append_step(int tms, int tdi);
108 static void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command);
109
110 /* opendous lowlevel functions */
111 struct opendous_jtag {
112 struct jtag_libusb_device_handle *usb_handle;
113 };
114
115 static struct opendous_jtag *opendous_usb_open(void);
116 static void opendous_usb_close(struct opendous_jtag *opendous_jtag);
117 static int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length);
118 static int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length);
119 static int opendous_usb_read(struct opendous_jtag *opendous_jtag);
120
121 /* helper functions */
122 int opendous_get_version_info(void);
123
124 #ifdef _DEBUG_USB_COMMS_
125 char time_str[50];
126 static void opendous_debug_buffer(uint8_t *buffer, int length);
127 char *opendous_get_time(char *);
128 #endif
129
130 static struct opendous_jtag *opendous_jtag_handle;
131
132 /***************************************************************************/
133 /* External interface implementation */
134
135 COMMAND_HANDLER(opendous_handle_opendous_info_command)
136 {
137 if (opendous_get_version_info() == ERROR_OK) {
138 /* attempt to get status */
139 opendous_get_status();
140 }
141
142 return ERROR_OK;
143 }
144
145 COMMAND_HANDLER(opendous_handle_opendous_hw_jtag_command)
146 {
147 switch (CMD_ARGC) {
148 case 0:
149 command_print(CMD_CTX, "opendous hw jtag %i", opendous_hw_jtag_version);
150 break;
151
152 case 1: {
153 int request_version = atoi(CMD_ARGV[0]);
154 switch (request_version) {
155 case 2:
156 case 3:
157 opendous_hw_jtag_version = request_version;
158 break;
159
160 default:
161 return ERROR_COMMAND_SYNTAX_ERROR;
162 }
163 break;
164 }
165
166 default:
167 return ERROR_COMMAND_SYNTAX_ERROR;
168 }
169
170 return ERROR_OK;
171 }
172
173 static const struct command_registration opendous_command_handlers[] = {
174 {
175 .name = "opendous_info",
176 .handler = &opendous_handle_opendous_info_command,
177 .mode = COMMAND_EXEC,
178 .help = "show opendous info",
179 },
180 {
181 .name = "opendous_hw_jtag",
182 .handler = &opendous_handle_opendous_hw_jtag_command,
183 .mode = COMMAND_EXEC,
184 .help = "access opendous HW JTAG command version",
185 .usage = "[2|3]",
186 },
187 COMMAND_REGISTRATION_DONE
188 };
189
190 struct jtag_interface opendous_interface = {
191 .name = "opendous",
192 .commands = opendous_command_handlers,
193 .execute_queue = opendous_execute_queue,
194 .init = opendous_init,
195 .quit = opendous_quit,
196 };
197
198 static int opendous_execute_queue(void)
199 {
200 struct jtag_command *cmd = jtag_command_queue;
201 int scan_size;
202 enum scan_type type;
203 uint8_t *buffer;
204
205 while (cmd != NULL) {
206 switch (cmd->type) {
207 case JTAG_RUNTEST:
208 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, \
209 cmd->cmd.runtest->end_state);
210
211 if (cmd->cmd.runtest->end_state != -1)
212 opendous_end_state(cmd->cmd.runtest->end_state);
213 opendous_runtest(cmd->cmd.runtest->num_cycles);
214 break;
215
216 case JTAG_TLR_RESET:
217 DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
218
219 if (cmd->cmd.statemove->end_state != -1)
220 opendous_end_state(cmd->cmd.statemove->end_state);
221 opendous_state_move();
222 break;
223
224 case JTAG_PATHMOVE:
225 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
226 cmd->cmd.pathmove->num_states, \
227 cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
228
229 opendous_path_move(cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path);
230 break;
231
232 case JTAG_SCAN:
233 DEBUG_JTAG_IO("scan end in %i", cmd->cmd.scan->end_state);
234
235 if (cmd->cmd.scan->end_state != -1)
236 opendous_end_state(cmd->cmd.scan->end_state);
237
238 scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
239 DEBUG_JTAG_IO("scan input, length = %d", scan_size);
240
241 #ifdef _DEBUG_USB_COMMS_
242 opendous_debug_buffer(buffer, (scan_size + 7) / 8);
243 #endif
244 type = jtag_scan_type(cmd->cmd.scan);
245 opendous_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size, cmd->cmd.scan);
246 break;
247
248 case JTAG_RESET:
249 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
250
251 opendous_tap_execute();
252
253 if (cmd->cmd.reset->trst == 1)
254 tap_set_state(TAP_RESET);
255 opendous_reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
256 break;
257
258 case JTAG_SLEEP:
259 DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
260 opendous_tap_execute();
261 jtag_sleep(cmd->cmd.sleep->us);
262 break;
263
264 default:
265 LOG_ERROR("BUG: unknown JTAG command type encountered");
266 exit(-1);
267 }
268 cmd = cmd->next;
269 }
270 return opendous_tap_execute();
271 }
272
273 static int opendous_init(void)
274 {
275 int check_cnt;
276
277 opendous_jtag_handle = opendous_usb_open();
278
279 if (opendous_jtag_handle == 0) {
280 LOG_ERROR("Cannot find opendous Interface! Please check connection and permissions.");
281 return ERROR_JTAG_INIT_FAILED;
282 }
283
284 check_cnt = 0;
285 while (check_cnt < 3) {
286 if (opendous_get_version_info() == ERROR_OK) {
287 /* attempt to get status */
288 opendous_get_status();
289 break;
290 }
291
292 check_cnt++;
293 }
294
295 LOG_INFO("opendous JTAG Interface ready");
296
297 opendous_reset(0, 0);
298 opendous_tap_init();
299
300 return ERROR_OK;
301 }
302
303 static int opendous_quit(void)
304 {
305 opendous_usb_close(opendous_jtag_handle);
306 return ERROR_OK;
307 }
308
309 /***************************************************************************/
310 /* Queue command implementations */
311
312 void opendous_end_state(tap_state_t state)
313 {
314 if (tap_is_state_stable(state))
315 tap_set_end_state(state);
316 else {
317 LOG_ERROR("BUG: %i is not a valid end state", state);
318 exit(-1);
319 }
320 }
321
322 /* Goes to the end state. */
323 void opendous_state_move(void)
324 {
325 int i;
326 int tms = 0;
327 uint8_t tms_scan = tap_get_tms_path(tap_get_state(), tap_get_end_state());
328 uint8_t tms_scan_bits = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
329
330 for (i = 0; i < tms_scan_bits; i++) {
331 tms = (tms_scan >> i) & 1;
332 opendous_tap_append_step(tms, 0);
333 }
334
335 tap_set_state(tap_get_end_state());
336 }
337
338 void opendous_path_move(int num_states, tap_state_t *path)
339 {
340 int i;
341
342 for (i = 0; i < num_states; i++) {
343 if (path[i] == tap_state_transition(tap_get_state(), false))
344 opendous_tap_append_step(0, 0);
345 else if (path[i] == tap_state_transition(tap_get_state(), true))
346 opendous_tap_append_step(1, 0);
347 else {
348 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
349 tap_state_name(tap_get_state()), tap_state_name(path[i]));
350 exit(-1);
351 }
352
353 tap_set_state(path[i]);
354 }
355
356 tap_set_end_state(tap_get_state());
357 }
358
359 void opendous_runtest(int num_cycles)
360 {
361 int i;
362
363 tap_state_t saved_end_state = tap_get_end_state();
364
365 /* only do a state_move when we're not already in IDLE */
366 if (tap_get_state() != TAP_IDLE) {
367 opendous_end_state(TAP_IDLE);
368 opendous_state_move();
369 }
370
371 /* execute num_cycles */
372 for (i = 0; i < num_cycles; i++)
373 opendous_tap_append_step(0, 0);
374
375 /* finish in end_state */
376 opendous_end_state(saved_end_state);
377 if (tap_get_state() != tap_get_end_state())
378 opendous_state_move();
379 }
380
381 void opendous_scan(int ir_scan, enum scan_type type, uint8_t *buffer, int scan_size, struct scan_command *command)
382 {
383 tap_state_t saved_end_state;
384
385 opendous_tap_ensure_space(1, scan_size + 8);
386
387 saved_end_state = tap_get_end_state();
388
389 /* Move to appropriate scan state */
390 opendous_end_state(ir_scan ? TAP_IRSHIFT : TAP_DRSHIFT);
391
392 if (tap_get_state() != tap_get_end_state())
393 opendous_state_move();
394
395 opendous_end_state(saved_end_state);
396
397 /* Scan */
398 opendous_tap_append_scan(scan_size, buffer, command);
399
400 /* We are in Exit1, go to Pause */
401 opendous_tap_append_step(0, 0);
402
403 tap_set_state(ir_scan ? TAP_IRPAUSE : TAP_DRPAUSE);
404
405 if (tap_get_state() != tap_get_end_state())
406 opendous_state_move();
407 }
408
409 void opendous_reset(int trst, int srst)
410 {
411 LOG_DEBUG("trst: %i, srst: %i", trst, srst);
412
413 /* Signals are active low */
414 #if 0
415 if (srst == 0)
416 opendous_simple_command(JTAG_CMD_SET_SRST, 1);
417 else if (srst == 1)
418 opendous_simple_command(JTAG_CMD_SET_SRST, 0);
419
420 if (trst == 0)
421 opendous_simple_command(JTAG_CMD_SET_TRST, 1);
422 else if (trst == 1)
423 opendous_simple_command(JTAG_CMD_SET_TRST, 0);
424 #endif
425
426 srst = srst ? 0 : 1;
427 trst = trst ? 0 : 2;
428 opendous_simple_command(JTAG_CMD_SET_SRST_TRST, srst | trst);
429 }
430
431 void opendous_simple_command(uint8_t command, uint8_t _data)
432 {
433 int result;
434
435 DEBUG_JTAG_IO("0x%02x 0x%02x", command, _data);
436
437 usb_out_buffer[0] = 2;
438 usb_out_buffer[1] = 0;
439 usb_out_buffer[2] = command;
440 usb_out_buffer[3] = _data;
441
442 result = opendous_usb_message(opendous_jtag_handle, 4, 1);
443 if (result != 1)
444 LOG_ERROR("opendous command 0x%02x failed (%d)", command, result);
445 }
446
447 int opendous_get_status(void)
448 {
449 return ERROR_OK;
450 }
451
452 int opendous_get_version_info(void)
453 {
454 return ERROR_OK;
455 }
456
457 /***************************************************************************/
458 /* Estick tap functions */
459
460 static int tap_length;
461 static uint8_t tms_buffer[OPENDOUS_TAP_BUFFER_SIZE];
462 static uint8_t tdo_buffer[OPENDOUS_TAP_BUFFER_SIZE];
463
464 struct pending_scan_result {
465 int first; /* First bit position in tdo_buffer to read */
466 int length; /* Number of bits to read */
467 struct scan_command *command; /* Corresponding scan command */
468 uint8_t *buffer;
469 };
470
471 static int pending_scan_results_length;
472 static struct pending_scan_result pending_scan_results_buffer[MAX_PENDING_SCAN_RESULTS];
473
474 static int last_tms;
475
476 void opendous_tap_init(void)
477 {
478 tap_length = 0;
479 pending_scan_results_length = 0;
480 }
481
482 void opendous_tap_ensure_space(int scans, int bits)
483 {
484 int available_scans = MAX_PENDING_SCAN_RESULTS - pending_scan_results_length;
485
486 if (scans > available_scans)
487 opendous_tap_execute();
488 }
489
490 void opendous_tap_append_step(int tms, int tdi)
491 {
492 last_tms = tms;
493 unsigned char _tms = tms ? 1 : 0;
494 unsigned char _tdi = tdi ? 1 : 0;
495
496 int tap_index = tap_length / 4;
497 int bits = (tap_length % 4) * 2;
498
499 if (tap_length < OPENDOUS_TAP_BUFFER_SIZE) {
500 if (!bits)
501 tms_buffer[tap_index] = 0;
502
503 tms_buffer[tap_index] |= (_tdi << bits)|(_tms << (bits + 1)) ;
504 tap_length++;
505 } else
506 LOG_ERROR("opendous_tap_append_step, overflow");
507 }
508
509 void opendous_tap_append_scan(int length, uint8_t *buffer, struct scan_command *command)
510 {
511 DEBUG_JTAG_IO("append scan, length = %d", length);
512
513 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[pending_scan_results_length];
514 int i;
515
516 pending_scan_result->first = tap_length;
517 pending_scan_result->length = length;
518 pending_scan_result->command = command;
519 pending_scan_result->buffer = buffer;
520
521 for (i = 0; i < length; i++)
522 opendous_tap_append_step((i < length-1 ? 0 : 1), (buffer[i / 8] >> (i % 8)) & 1);
523 pending_scan_results_length++;
524 }
525
526 /* Pad and send a tap sequence to the device, and receive the answer.
527 * For the purpose of padding we assume that we are in idle or pause state. */
528 int opendous_tap_execute(void)
529 {
530 int byte_length;
531 int i, j;
532 int result;
533
534 #ifdef _DEBUG_USB_COMMS_
535 int byte_length_out;
536 #endif
537
538 if (tap_length > 0) {
539
540 /* memset(tdo_buffer,0,OPENDOUS_TAP_BUFFER_SIZE); */
541 /* LOG_INFO("OPENDOUS tap execute %d",tap_length); */
542 byte_length = (tap_length + 3) / 4;
543
544 #ifdef _DEBUG_USB_COMMS_
545 byte_length_out = (tap_length + 7) / 8;
546 LOG_DEBUG("opendous is sending %d bytes", byte_length);
547 #endif
548
549 for (j = 0, i = 0; j < byte_length;) {
550
551 int receive;
552 int transmit = byte_length - j;
553 if (transmit > OPENDOUS_MAX_TAP_TRANSMIT) {
554 transmit = OPENDOUS_MAX_TAP_TRANSMIT;
555 receive = (OPENDOUS_MAX_TAP_TRANSMIT) / 2;
556 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT;
557 } else {
558 usb_out_buffer[2] = JTAG_CMD_TAP_OUTPUT | ((tap_length % 4) << 4);
559 receive = (transmit + 1) / 2;
560 }
561 usb_out_buffer[0] = (transmit + 1) & 0xff;
562 usb_out_buffer[1] = ((transmit + 1) >> 8) & 0xff;
563
564 memmove(usb_out_buffer + 3, tms_buffer + j, transmit);
565 result = opendous_usb_message(opendous_jtag_handle, 3 + transmit, receive);
566 if (result != receive) {
567 LOG_ERROR("opendous_tap_execute, wrong result %d, expected %d", result, receive);
568 return ERROR_JTAG_QUEUE_FAILED;
569 }
570
571 memmove(tdo_buffer + i, usb_in_buffer, receive);
572 i += receive;
573 j += transmit;
574 }
575
576 #ifdef _DEBUG_USB_COMMS_
577 LOG_DEBUG("opendous tap result %d", byte_length_out);
578 opendous_debug_buffer(tdo_buffer, byte_length_out);
579 #endif
580
581 /* LOG_INFO("eStick tap execute %d",tap_length); */
582 for (i = 0; i < pending_scan_results_length; i++) {
583
584 struct pending_scan_result *pending_scan_result = &pending_scan_results_buffer[i];
585 uint8_t *buffer = pending_scan_result->buffer;
586 int length = pending_scan_result->length;
587 int first = pending_scan_result->first;
588 struct scan_command *command = pending_scan_result->command;
589
590 /* Copy to buffer */
591 buf_set_buf(tdo_buffer, first, buffer, 0, length);
592
593 DEBUG_JTAG_IO("pending scan result, length = %d", length);
594
595 #ifdef _DEBUG_USB_COMMS_
596 opendous_debug_buffer(buffer, byte_length_out);
597 #endif
598
599 if (jtag_read_buffer(buffer, command) != ERROR_OK) {
600 opendous_tap_init();
601 return ERROR_JTAG_QUEUE_FAILED;
602 }
603
604 if (pending_scan_result->buffer != NULL)
605 free(pending_scan_result->buffer);
606 }
607
608 opendous_tap_init();
609 }
610
611 return ERROR_OK;
612 }
613
614 /*****************************************************************************/
615 /* Estick USB low-level functions */
616
617 struct opendous_jtag *opendous_usb_open(void)
618 {
619 struct opendous_jtag *result;
620
621 struct jtag_libusb_device_handle *devh;
622 if (jtag_libusb_open(vids, pids, &devh) != ERROR_OK)
623 return NULL;
624
625 jtag_libusb_set_configuration(devh, 0);
626 jtag_libusb_claim_interface(devh, 0);
627
628 result = (struct opendous_jtag *) malloc(sizeof(struct opendous_jtag));
629 result->usb_handle = devh;
630 return result;
631 }
632
633 void opendous_usb_close(struct opendous_jtag *opendous_jtag)
634 {
635 jtag_libusb_close(opendous_jtag->usb_handle);
636 free(opendous_jtag);
637 }
638
639 /* Send a message and receive the reply. */
640 int opendous_usb_message(struct opendous_jtag *opendous_jtag, int out_length, int in_length)
641 {
642 int result;
643
644 result = opendous_usb_write(opendous_jtag, out_length);
645 if (result == out_length) {
646 result = opendous_usb_read(opendous_jtag);
647 if (result == in_length)
648 return result;
649 else {
650 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length, result);
651 return -1;
652 }
653 } else {
654 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length, result);
655 return -1;
656 }
657 }
658
659 /* Write data from out_buffer to USB. */
660 int opendous_usb_write(struct opendous_jtag *opendous_jtag, int out_length)
661 {
662 int result;
663
664 if (out_length > OPENDOUS_OUT_BUFFER_SIZE) {
665 LOG_ERROR("opendous_jtag_write illegal out_length=%d (max=%d)", out_length, OPENDOUS_OUT_BUFFER_SIZE);
666 return -1;
667 }
668
669 #ifdef _DEBUG_USB_COMMS_
670 LOG_DEBUG("%s: USB write begin", opendous_get_time(time_str));
671 #endif
672 result = jtag_libusb_bulk_write(opendous_jtag->usb_handle, OPENDOUS_WRITE_ENDPOINT, \
673 (char *)usb_out_buffer, out_length, OPENDOUS_USB_TIMEOUT);
674 #ifdef _DEBUG_USB_COMMS_
675 LOG_DEBUG("%s: USB write end: %d bytes", opendous_get_time(time_str), result);
676 #endif
677
678 DEBUG_JTAG_IO("opendous_usb_write, out_length = %d, result = %d", out_length, result);
679
680 #ifdef _DEBUG_USB_COMMS_
681 opendous_debug_buffer(usb_out_buffer, out_length);
682 #endif
683 return result;
684 }
685
686 /* Read data from USB into in_buffer. */
687 int opendous_usb_read(struct opendous_jtag *opendous_jtag)
688 {
689 #ifdef _DEBUG_USB_COMMS_
690 LOG_DEBUG("%s: USB read begin", opendous_get_time(time_str));
691 #endif
692 int result = jtag_libusb_bulk_read(opendous_jtag->usb_handle, OPENDOUS_READ_ENDPOINT,
693 (char *)usb_in_buffer, OPENDOUS_IN_BUFFER_SIZE, OPENDOUS_USB_TIMEOUT);
694 #ifdef _DEBUG_USB_COMMS_
695 LOG_DEBUG("%s: USB read end: %d bytes", opendous_get_time(time_str), result);
696 #endif
697 DEBUG_JTAG_IO("opendous_usb_read, result = %d", result);
698
699 #ifdef _DEBUG_USB_COMMS_
700 opendous_debug_buffer(usb_in_buffer, result);
701 #endif
702 return result;
703 }
704
705 #ifdef _DEBUG_USB_COMMS_
706 #define BYTES_PER_LINE 16
707
708 void opendous_debug_buffer(uint8_t *buffer, int length)
709 {
710 char line[81];
711 char s[4];
712 int i;
713 int j;
714
715 for (i = 0; i < length; i += BYTES_PER_LINE) {
716 snprintf(line, 5, "%04x", i);
717 for (j = i; j < i + BYTES_PER_LINE && j < length; j++) {
718 snprintf(s, 4, " %02x", buffer[j]);
719 strcat(line, s);
720 }
721 LOG_DEBUG("%s", line);
722 }
723 }
724
725 char *opendous_get_time(char *str)
726 {
727 struct timeb timebuffer;
728 char *timeline;
729
730 ftime(&timebuffer);
731 timeline = ctime(&(timebuffer.time));
732 snprintf(str, 49, "%.8s.%hu", &timeline[11], timebuffer.millitm);
733 return str;
734 }
735 #endif
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