1 /***************************************************************************
3 * Copyright (C) 2009 by Cahya Wirawan <cahya@gmx.at> *
4 * Based on opendous driver by Vladimir Fonov *
6 * Copyright (C) 2009 by Vladimir Fonov <vladimir.fonov@gmai.com> *
7 * Based on J-link driver by Juergen Stuber *
9 * Copyright (C) 2007 by Juergen Stuber <juergen@jstuber.net> *
10 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
12 * Copyright (C) 2008 by Spencer Oliver *
13 * spen@spen-soft.co.uk *
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. *
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. *
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 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
29 ***************************************************************************/
35 #include <jtag/interface.h>
36 #include <jtag/commands.h>
37 #include "libusb_common.h"
41 #define OPENDOUS_MAX_VIDS_PIDS 4
42 /* define some probes with similar interface */
43 struct opendous_probe
{
45 uint16_t VID
[OPENDOUS_MAX_VIDS_PIDS
];
46 uint16_t PID
[OPENDOUS_MAX_VIDS_PIDS
];
49 uint8_t CONTROL_TRANSFER
;
53 static const struct opendous_probe opendous_probes
[] = {
54 {"usbprog-jtag", {0x1781, 0}, {0x0C63, 0}, 0x82, 0x02, 0x00, 510 },
55 {"opendous", {0x1781, 0x03EB, 0}, {0xC0C0, 0x204F, 0}, 0x81, 0x02, 0x00, 360 },
56 {"usbvlab", {0x16C0, 0}, {0x05DC, 0}, 0x81, 0x02, 0x01, 360 },
57 {NULL
, {0x0000}, {0x0000}, 0x00, 0x00, 0x00, 0 }
60 #define OPENDOUS_WRITE_ENDPOINT (opendous_probe->WRITE_EP)
61 #define OPENDOUS_READ_ENDPOINT (opendous_probe->READ_EP)
63 static unsigned int opendous_hw_jtag_version
= 1;
65 #define OPENDOUS_USB_TIMEOUT 1000
67 #define OPENDOUS_USB_BUFFER_SIZE (opendous_probe->BUFFERSIZE)
68 #define OPENDOUS_IN_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
69 #define OPENDOUS_OUT_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
71 /* Global USB buffers */
72 static uint8_t *usb_in_buffer
;
73 static uint8_t *usb_out_buffer
;
75 /* Constants for OPENDOUS command */
77 #define OPENDOUS_MAX_SPEED 66
78 #define OPENDOUS_MAX_TAP_TRANSMIT ((opendous_probe->BUFFERSIZE)-10)
79 #define OPENDOUS_MAX_INPUT_DATA (OPENDOUS_MAX_TAP_TRANSMIT*4)
82 #define OPENDOUS_TAP_BUFFER_SIZE 65536
84 struct pending_scan_result
{
85 int first
; /* First bit position in tdo_buffer to read */
86 int length
; /* Number of bits to read */
87 struct scan_command
*command
; /* Corresponding scan command */
91 static int pending_scan_results_length
;
92 static struct pending_scan_result
*pending_scan_results_buffer
;
94 #define MAX_PENDING_SCAN_RESULTS (OPENDOUS_MAX_INPUT_DATA)
96 /* JTAG usb commands */
97 #define JTAG_CMD_TAP_OUTPUT 0x0
98 #define JTAG_CMD_SET_TRST 0x1
99 #define JTAG_CMD_SET_SRST 0x2
100 #define JTAG_CMD_READ_INPUT 0x3
101 #define JTAG_CMD_TAP_OUTPUT_EMU 0x4
102 #define JTAG_CMD_SET_DELAY 0x5
103 #define JTAG_CMD_SET_SRST_TRST 0x6
104 #define JTAG_CMD_READ_CONFIG 0x7
106 /* usbvlab control transfer */
107 #define FUNC_START_BOOTLOADER 30
108 #define FUNC_WRITE_DATA 0x50
109 #define FUNC_READ_DATA 0x51
111 static char *opendous_type
;
112 static const struct opendous_probe
*opendous_probe
;
114 /* External interface functions */
115 static int opendous_execute_queue(void);
116 static int opendous_init(void);
117 static int opendous_quit(void);
119 /* Queue command functions */
120 static void opendous_end_state(tap_state_t state
);
121 static void opendous_state_move(void);
122 static void opendous_path_move(int num_states
, tap_state_t
*path
);
123 static void opendous_runtest(int num_cycles
);
124 static void opendous_scan(int ir_scan
, enum scan_type type
, uint8_t *buffer
,
125 int scan_size
, struct scan_command
*command
);
126 static void opendous_reset(int trst
, int srst
);
127 static void opendous_simple_command(uint8_t command
, uint8_t _data
);
128 static int opendous_get_status(void);
130 /* opendous tap buffer functions */
131 static void opendous_tap_init(void);
132 static int opendous_tap_execute(void);
133 static void opendous_tap_ensure_space(int scans
, int bits
);
134 static void opendous_tap_append_step(int tms
, int tdi
);
135 static void opendous_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
);
137 /* opendous lowlevel functions */
138 struct opendous_jtag
{
139 struct jtag_libusb_device_handle
*usb_handle
;
142 static struct opendous_jtag
*opendous_usb_open(void);
143 static void opendous_usb_close(struct opendous_jtag
*opendous_jtag
);
144 static int opendous_usb_message(struct opendous_jtag
*opendous_jtag
, int out_length
, int in_length
);
145 static int opendous_usb_write(struct opendous_jtag
*opendous_jtag
, int out_length
);
146 static int opendous_usb_read(struct opendous_jtag
*opendous_jtag
);
148 /* helper functions */
149 int opendous_get_version_info(void);
151 #ifdef _DEBUG_USB_COMMS_
152 static void opendous_debug_buffer(uint8_t *buffer
, int length
);
155 static struct opendous_jtag
*opendous_jtag_handle
;
157 /***************************************************************************/
158 /* External interface implementation */
160 COMMAND_HANDLER(opendous_handle_opendous_type_command
)
165 /* only if the cable name wasn't overwritten by cmdline */
166 if (opendous_type
== NULL
) {
167 /* REVISIT first verify that it's listed in cables[] ... */
168 opendous_type
= strdup(CMD_ARGV
[0]);
171 /* REVISIT it's probably worth returning the current value ... */
176 COMMAND_HANDLER(opendous_handle_opendous_info_command
)
178 if (opendous_get_version_info() == ERROR_OK
) {
179 /* attempt to get status */
180 opendous_get_status();
186 COMMAND_HANDLER(opendous_handle_opendous_hw_jtag_command
)
190 command_print(CMD_CTX
, "opendous hw jtag %i", opendous_hw_jtag_version
);
194 int request_version
= atoi(CMD_ARGV
[0]);
195 switch (request_version
) {
198 opendous_hw_jtag_version
= request_version
;
202 return ERROR_COMMAND_SYNTAX_ERROR
;
208 return ERROR_COMMAND_SYNTAX_ERROR
;
214 static const struct command_registration opendous_command_handlers
[] = {
216 .name
= "opendous_info",
217 .handler
= &opendous_handle_opendous_info_command
,
218 .mode
= COMMAND_EXEC
,
219 .help
= "show opendous info",
222 .name
= "opendous_hw_jtag",
223 .handler
= &opendous_handle_opendous_hw_jtag_command
,
224 .mode
= COMMAND_EXEC
,
225 .help
= "access opendous HW JTAG command version",
229 .name
= "opendous_type",
230 .handler
= &opendous_handle_opendous_type_command
,
231 .mode
= COMMAND_CONFIG
,
232 .help
= "set opendous type",
233 .usage
= "[usbvlab|usbprog-jtag|opendous]",
235 COMMAND_REGISTRATION_DONE
238 struct jtag_interface opendous_interface
= {
240 .commands
= opendous_command_handlers
,
241 .execute_queue
= opendous_execute_queue
,
242 .init
= opendous_init
,
243 .quit
= opendous_quit
,
246 static int opendous_execute_queue(void)
248 struct jtag_command
*cmd
= jtag_command_queue
;
253 while (cmd
!= NULL
) {
256 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
, \
257 cmd
->cmd
.runtest
->end_state
);
259 if (cmd
->cmd
.runtest
->end_state
!= -1)
260 opendous_end_state(cmd
->cmd
.runtest
->end_state
);
261 opendous_runtest(cmd
->cmd
.runtest
->num_cycles
);
265 DEBUG_JTAG_IO("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
267 if (cmd
->cmd
.statemove
->end_state
!= -1)
268 opendous_end_state(cmd
->cmd
.statemove
->end_state
);
269 opendous_state_move();
273 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
274 cmd
->cmd
.pathmove
->num_states
, \
275 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
277 opendous_path_move(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
281 DEBUG_JTAG_IO("scan end in %i", cmd
->cmd
.scan
->end_state
);
283 if (cmd
->cmd
.scan
->end_state
!= -1)
284 opendous_end_state(cmd
->cmd
.scan
->end_state
);
286 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
287 DEBUG_JTAG_IO("scan input, length = %d", scan_size
);
289 #ifdef _DEBUG_USB_COMMS_
290 opendous_debug_buffer(buffer
, (scan_size
+ 7) / 8);
292 type
= jtag_scan_type(cmd
->cmd
.scan
);
293 opendous_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
, cmd
->cmd
.scan
);
297 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
299 opendous_tap_execute();
301 if (cmd
->cmd
.reset
->trst
== 1)
302 tap_set_state(TAP_RESET
);
303 opendous_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
307 DEBUG_JTAG_IO("sleep %" PRIi32
, cmd
->cmd
.sleep
->us
);
308 opendous_tap_execute();
309 jtag_sleep(cmd
->cmd
.sleep
->us
);
313 LOG_ERROR("BUG: unknown JTAG command type encountered");
318 return opendous_tap_execute();
321 static int opendous_init(void)
324 const struct opendous_probe
*cur_opendous_probe
;
326 cur_opendous_probe
= opendous_probes
;
328 if (opendous_type
== NULL
) {
329 opendous_type
= strdup("opendous");
330 LOG_WARNING("No opendous_type specified, using default 'opendous'");
333 while (cur_opendous_probe
->name
) {
334 if (strcmp(cur_opendous_probe
->name
, opendous_type
) == 0) {
335 opendous_probe
= cur_opendous_probe
;
338 cur_opendous_probe
++;
341 if (!opendous_probe
) {
342 LOG_ERROR("No matching cable found for %s", opendous_type
);
343 return ERROR_JTAG_INIT_FAILED
;
347 usb_in_buffer
= malloc(opendous_probe
->BUFFERSIZE
);
348 usb_out_buffer
= malloc(opendous_probe
->BUFFERSIZE
);
350 pending_scan_results_buffer
= malloc(
351 MAX_PENDING_SCAN_RESULTS
* sizeof(*pending_scan_results_buffer
));
353 opendous_jtag_handle
= opendous_usb_open();
355 if (opendous_jtag_handle
== 0) {
356 LOG_ERROR("Cannot find opendous Interface! Please check connection and permissions.");
357 return ERROR_JTAG_INIT_FAILED
;
361 while (check_cnt
< 3) {
362 if (opendous_get_version_info() == ERROR_OK
) {
363 /* attempt to get status */
364 opendous_get_status();
371 LOG_INFO("opendous JTAG Interface ready");
373 opendous_reset(0, 0);
379 static int opendous_quit(void)
381 opendous_usb_close(opendous_jtag_handle
);
383 if (usb_out_buffer
) {
384 free(usb_out_buffer
);
385 usb_out_buffer
= NULL
;
390 usb_in_buffer
= NULL
;
393 if (pending_scan_results_buffer
) {
394 free(pending_scan_results_buffer
);
395 pending_scan_results_buffer
= NULL
;
400 opendous_type
= NULL
;
406 /***************************************************************************/
407 /* Queue command implementations */
409 void opendous_end_state(tap_state_t state
)
411 if (tap_is_state_stable(state
))
412 tap_set_end_state(state
);
414 LOG_ERROR("BUG: %i is not a valid end state", state
);
419 /* Goes to the end state. */
420 void opendous_state_move(void)
424 uint8_t tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
425 uint8_t tms_scan_bits
= tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
427 for (i
= 0; i
< tms_scan_bits
; i
++) {
428 tms
= (tms_scan
>> i
) & 1;
429 opendous_tap_append_step(tms
, 0);
432 tap_set_state(tap_get_end_state());
435 void opendous_path_move(int num_states
, tap_state_t
*path
)
439 for (i
= 0; i
< num_states
; i
++) {
440 if (path
[i
] == tap_state_transition(tap_get_state(), false))
441 opendous_tap_append_step(0, 0);
442 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
443 opendous_tap_append_step(1, 0);
445 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
446 tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
450 tap_set_state(path
[i
]);
453 tap_set_end_state(tap_get_state());
456 void opendous_runtest(int num_cycles
)
460 tap_state_t saved_end_state
= tap_get_end_state();
462 /* only do a state_move when we're not already in IDLE */
463 if (tap_get_state() != TAP_IDLE
) {
464 opendous_end_state(TAP_IDLE
);
465 opendous_state_move();
468 /* execute num_cycles */
469 for (i
= 0; i
< num_cycles
; i
++)
470 opendous_tap_append_step(0, 0);
472 /* finish in end_state */
473 opendous_end_state(saved_end_state
);
474 if (tap_get_state() != tap_get_end_state())
475 opendous_state_move();
478 void opendous_scan(int ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, struct scan_command
*command
)
480 tap_state_t saved_end_state
;
482 opendous_tap_ensure_space(1, scan_size
+ 8);
484 saved_end_state
= tap_get_end_state();
486 /* Move to appropriate scan state */
487 opendous_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
489 if (tap_get_state() != tap_get_end_state())
490 opendous_state_move();
492 opendous_end_state(saved_end_state
);
495 opendous_tap_append_scan(scan_size
, buffer
, command
);
497 /* We are in Exit1, go to Pause */
498 opendous_tap_append_step(0, 0);
500 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
502 if (tap_get_state() != tap_get_end_state())
503 opendous_state_move();
506 void opendous_reset(int trst
, int srst
)
508 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
510 /* Signals are active low */
513 opendous_simple_command(JTAG_CMD_SET_SRST
, 1);
515 opendous_simple_command(JTAG_CMD_SET_SRST
, 0);
518 opendous_simple_command(JTAG_CMD_SET_TRST
, 1);
520 opendous_simple_command(JTAG_CMD_SET_TRST
, 0);
525 opendous_simple_command(JTAG_CMD_SET_SRST_TRST
, srst
| trst
);
528 void opendous_simple_command(uint8_t command
, uint8_t _data
)
532 DEBUG_JTAG_IO("0x%02x 0x%02x", command
, _data
);
534 usb_out_buffer
[0] = 2;
535 usb_out_buffer
[1] = 0;
536 usb_out_buffer
[2] = command
;
537 usb_out_buffer
[3] = _data
;
539 result
= opendous_usb_message(opendous_jtag_handle
, 4, 1);
541 LOG_ERROR("opendous command 0x%02x failed (%d)", command
, result
);
544 int opendous_get_status(void)
549 int opendous_get_version_info(void)
554 /***************************************************************************/
555 /* Estick tap functions */
557 static int tap_length
;
558 static uint8_t tms_buffer
[OPENDOUS_TAP_BUFFER_SIZE
];
559 static uint8_t tdo_buffer
[OPENDOUS_TAP_BUFFER_SIZE
];
563 void opendous_tap_init(void)
566 pending_scan_results_length
= 0;
569 void opendous_tap_ensure_space(int scans
, int bits
)
571 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
572 int available_bits
= OPENDOUS_TAP_BUFFER_SIZE
/ 2 - tap_length
;
574 if ((scans
> available_scans
) || (bits
> available_bits
))
575 opendous_tap_execute();
578 void opendous_tap_append_step(int tms
, int tdi
)
581 unsigned char _tms
= tms
? 1 : 0;
582 unsigned char _tdi
= tdi
? 1 : 0;
584 opendous_tap_ensure_space(0, 1);
586 int tap_index
= tap_length
/ 4;
587 int bits
= (tap_length
% 4) * 2;
589 if (tap_length
< OPENDOUS_TAP_BUFFER_SIZE
) {
591 tms_buffer
[tap_index
] = 0;
593 tms_buffer
[tap_index
] |= (_tdi
<< bits
)|(_tms
<< (bits
+ 1)) ;
596 LOG_ERROR("opendous_tap_append_step, overflow");
599 void opendous_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
)
601 DEBUG_JTAG_IO("append scan, length = %d", length
);
603 struct pending_scan_result
*pending_scan_result
= &pending_scan_results_buffer
[pending_scan_results_length
];
606 pending_scan_result
->first
= tap_length
;
607 pending_scan_result
->length
= length
;
608 pending_scan_result
->command
= command
;
609 pending_scan_result
->buffer
= buffer
;
611 for (i
= 0; i
< length
; i
++)
612 opendous_tap_append_step((i
< length
-1 ? 0 : 1), (buffer
[i
/ 8] >> (i
% 8)) & 1);
613 pending_scan_results_length
++;
616 /* Pad and send a tap sequence to the device, and receive the answer.
617 * For the purpose of padding we assume that we are in idle or pause state. */
618 int opendous_tap_execute(void)
624 #ifdef _DEBUG_USB_COMMS_
628 if (tap_length
> 0) {
630 /* memset(tdo_buffer,0,OPENDOUS_TAP_BUFFER_SIZE); */
631 /* LOG_INFO("OPENDOUS tap execute %d",tap_length); */
632 byte_length
= (tap_length
+ 3) / 4;
634 #ifdef _DEBUG_USB_COMMS_
635 byte_length_out
= (tap_length
+ 7) / 8;
636 LOG_DEBUG("opendous is sending %d bytes", byte_length
);
639 for (j
= 0, i
= 0; j
< byte_length
;) {
642 int transmit
= byte_length
- j
;
643 if (transmit
> OPENDOUS_MAX_TAP_TRANSMIT
) {
644 transmit
= OPENDOUS_MAX_TAP_TRANSMIT
;
645 receive
= (OPENDOUS_MAX_TAP_TRANSMIT
) / 2;
646 usb_out_buffer
[2] = JTAG_CMD_TAP_OUTPUT
;
648 usb_out_buffer
[2] = JTAG_CMD_TAP_OUTPUT
| ((tap_length
% 4) << 4);
649 receive
= (transmit
+ 1) / 2;
651 usb_out_buffer
[0] = (transmit
+ 1) & 0xff;
652 usb_out_buffer
[1] = ((transmit
+ 1) >> 8) & 0xff;
654 memmove(usb_out_buffer
+ 3, tms_buffer
+ j
, transmit
);
655 result
= opendous_usb_message(opendous_jtag_handle
, 3 + transmit
, receive
);
656 if (result
!= receive
) {
657 LOG_ERROR("opendous_tap_execute, wrong result %d, expected %d", result
, receive
);
658 return ERROR_JTAG_QUEUE_FAILED
;
661 memmove(tdo_buffer
+ i
, usb_in_buffer
, receive
);
666 #ifdef _DEBUG_USB_COMMS_
667 LOG_DEBUG("opendous tap result %d", byte_length_out
);
668 opendous_debug_buffer(tdo_buffer
, byte_length_out
);
671 /* LOG_INFO("eStick tap execute %d",tap_length); */
672 for (i
= 0; i
< pending_scan_results_length
; i
++) {
674 struct pending_scan_result
*pending_scan_result
= &pending_scan_results_buffer
[i
];
675 uint8_t *buffer
= pending_scan_result
->buffer
;
676 int length
= pending_scan_result
->length
;
677 int first
= pending_scan_result
->first
;
678 struct scan_command
*command
= pending_scan_result
->command
;
681 buf_set_buf(tdo_buffer
, first
, buffer
, 0, length
);
683 DEBUG_JTAG_IO("pending scan result, length = %d", length
);
685 #ifdef _DEBUG_USB_COMMS_
686 opendous_debug_buffer(buffer
, byte_length_out
);
689 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
) {
691 return ERROR_JTAG_QUEUE_FAILED
;
694 if (pending_scan_result
->buffer
!= NULL
)
695 free(pending_scan_result
->buffer
);
704 /*****************************************************************************/
705 /* Estick USB low-level functions */
707 struct opendous_jtag
*opendous_usb_open(void)
709 struct opendous_jtag
*result
;
711 struct jtag_libusb_device_handle
*devh
;
712 if (jtag_libusb_open(opendous_probe
->VID
, opendous_probe
->PID
, NULL
, &devh
) != ERROR_OK
)
715 jtag_libusb_set_configuration(devh
, 0);
716 jtag_libusb_claim_interface(devh
, 0);
718 result
= malloc(sizeof(*result
));
719 result
->usb_handle
= devh
;
723 void opendous_usb_close(struct opendous_jtag
*opendous_jtag
)
725 jtag_libusb_close(opendous_jtag
->usb_handle
);
729 /* Send a message and receive the reply. */
730 int opendous_usb_message(struct opendous_jtag
*opendous_jtag
, int out_length
, int in_length
)
734 result
= opendous_usb_write(opendous_jtag
, out_length
);
735 if (result
== out_length
) {
736 result
= opendous_usb_read(opendous_jtag
);
737 if (result
== in_length
)
740 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length
, result
);
744 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length
, result
);
749 /* Write data from out_buffer to USB. */
750 int opendous_usb_write(struct opendous_jtag
*opendous_jtag
, int out_length
)
754 if (out_length
> OPENDOUS_OUT_BUFFER_SIZE
) {
755 LOG_ERROR("opendous_jtag_write illegal out_length=%d (max=%d)", out_length
, OPENDOUS_OUT_BUFFER_SIZE
);
759 #ifdef _DEBUG_USB_COMMS_
760 LOG_DEBUG("USB write begin");
762 if (opendous_probe
->CONTROL_TRANSFER
) {
763 result
= jtag_libusb_control_transfer(opendous_jtag
->usb_handle
,
764 LIBUSB_REQUEST_TYPE_VENDOR
| LIBUSB_RECIPIENT_DEVICE
| LIBUSB_ENDPOINT_OUT
,
765 FUNC_WRITE_DATA
, 0, 0, (char *) usb_out_buffer
, out_length
, OPENDOUS_USB_TIMEOUT
);
767 result
= jtag_libusb_bulk_write(opendous_jtag
->usb_handle
, OPENDOUS_WRITE_ENDPOINT
, \
768 (char *)usb_out_buffer
, out_length
, OPENDOUS_USB_TIMEOUT
);
770 #ifdef _DEBUG_USB_COMMS_
771 LOG_DEBUG("USB write end: %d bytes", result
);
774 DEBUG_JTAG_IO("opendous_usb_write, out_length = %d, result = %d", out_length
, result
);
776 #ifdef _DEBUG_USB_COMMS_
777 opendous_debug_buffer(usb_out_buffer
, out_length
);
782 /* Read data from USB into in_buffer. */
783 int opendous_usb_read(struct opendous_jtag
*opendous_jtag
)
785 #ifdef _DEBUG_USB_COMMS_
786 LOG_DEBUG("USB read begin");
789 if (opendous_probe
->CONTROL_TRANSFER
) {
790 result
= jtag_libusb_control_transfer(opendous_jtag
->usb_handle
,
791 LIBUSB_REQUEST_TYPE_VENDOR
| LIBUSB_RECIPIENT_DEVICE
| LIBUSB_ENDPOINT_IN
,
792 FUNC_READ_DATA
, 0, 0, (char *) usb_in_buffer
, OPENDOUS_IN_BUFFER_SIZE
, OPENDOUS_USB_TIMEOUT
);
794 result
= jtag_libusb_bulk_read(opendous_jtag
->usb_handle
, OPENDOUS_READ_ENDPOINT
,
795 (char *)usb_in_buffer
, OPENDOUS_IN_BUFFER_SIZE
, OPENDOUS_USB_TIMEOUT
);
797 #ifdef _DEBUG_USB_COMMS_
798 LOG_DEBUG("USB read end: %d bytes", result
);
800 DEBUG_JTAG_IO("opendous_usb_read, result = %d", result
);
802 #ifdef _DEBUG_USB_COMMS_
803 opendous_debug_buffer(usb_in_buffer
, result
);
808 #ifdef _DEBUG_USB_COMMS_
809 #define BYTES_PER_LINE 16
811 void opendous_debug_buffer(uint8_t *buffer
, int length
)
818 for (i
= 0; i
< length
; i
+= BYTES_PER_LINE
) {
819 snprintf(line
, 5, "%04x", i
);
820 for (j
= i
; j
< i
+ BYTES_PER_LINE
&& j
< length
; j
++) {
821 snprintf(s
, 4, " %02x", buffer
[j
]);
824 LOG_DEBUG("%s", line
);
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