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, see <http://www.gnu.org/licenses/>. *
27 ***************************************************************************/
33 #include <jtag/interface.h>
34 #include <jtag/commands.h>
35 #include "libusb_common.h"
39 #define OPENDOUS_MAX_VIDS_PIDS 4
40 /* define some probes with similar interface */
41 struct opendous_probe
{
43 uint16_t VID
[OPENDOUS_MAX_VIDS_PIDS
];
44 uint16_t PID
[OPENDOUS_MAX_VIDS_PIDS
];
47 uint8_t CONTROL_TRANSFER
;
51 static const struct opendous_probe opendous_probes
[] = {
52 {"usbprog-jtag", {0x1781, 0}, {0x0C63, 0}, 0x82, 0x02, 0x00, 510 },
53 {"opendous", {0x1781, 0x03EB, 0}, {0xC0C0, 0x204F, 0}, 0x81, 0x02, 0x00, 360 },
54 {"usbvlab", {0x16C0, 0}, {0x05DC, 0}, 0x81, 0x02, 0x01, 360 },
55 {NULL
, {0x0000}, {0x0000}, 0x00, 0x00, 0x00, 0 }
58 #define OPENDOUS_WRITE_ENDPOINT (opendous_probe->WRITE_EP)
59 #define OPENDOUS_READ_ENDPOINT (opendous_probe->READ_EP)
61 static unsigned int opendous_hw_jtag_version
= 1;
63 #define OPENDOUS_USB_TIMEOUT 1000
65 #define OPENDOUS_USB_BUFFER_SIZE (opendous_probe->BUFFERSIZE)
66 #define OPENDOUS_IN_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
67 #define OPENDOUS_OUT_BUFFER_SIZE (OPENDOUS_USB_BUFFER_SIZE)
69 /* Global USB buffers */
70 static uint8_t *usb_in_buffer
;
71 static uint8_t *usb_out_buffer
;
73 /* Constants for OPENDOUS command */
75 #define OPENDOUS_MAX_SPEED 66
76 #define OPENDOUS_MAX_TAP_TRANSMIT ((opendous_probe->BUFFERSIZE)-10)
77 #define OPENDOUS_MAX_INPUT_DATA (OPENDOUS_MAX_TAP_TRANSMIT*4)
80 #define OPENDOUS_TAP_BUFFER_SIZE 65536
82 struct pending_scan_result
{
83 int first
; /* First bit position in tdo_buffer to read */
84 int length
; /* Number of bits to read */
85 struct scan_command
*command
; /* Corresponding scan command */
89 static int pending_scan_results_length
;
90 static struct pending_scan_result
*pending_scan_results_buffer
;
92 #define MAX_PENDING_SCAN_RESULTS (OPENDOUS_MAX_INPUT_DATA)
94 /* JTAG usb commands */
95 #define JTAG_CMD_TAP_OUTPUT 0x0
96 #define JTAG_CMD_SET_TRST 0x1
97 #define JTAG_CMD_SET_SRST 0x2
98 #define JTAG_CMD_READ_INPUT 0x3
99 #define JTAG_CMD_TAP_OUTPUT_EMU 0x4
100 #define JTAG_CMD_SET_DELAY 0x5
101 #define JTAG_CMD_SET_SRST_TRST 0x6
102 #define JTAG_CMD_READ_CONFIG 0x7
104 /* usbvlab control transfer */
105 #define FUNC_START_BOOTLOADER 30
106 #define FUNC_WRITE_DATA 0x50
107 #define FUNC_READ_DATA 0x51
109 static char *opendous_type
;
110 static const struct opendous_probe
*opendous_probe
;
112 /* External interface functions */
113 static int opendous_execute_queue(void);
114 static int opendous_init(void);
115 static int opendous_quit(void);
117 /* Queue command functions */
118 static void opendous_end_state(tap_state_t state
);
119 static void opendous_state_move(void);
120 static void opendous_path_move(int num_states
, tap_state_t
*path
);
121 static void opendous_runtest(int num_cycles
);
122 static void opendous_scan(int ir_scan
, enum scan_type type
, uint8_t *buffer
,
123 int scan_size
, struct scan_command
*command
);
124 static void opendous_reset(int trst
, int srst
);
125 static void opendous_simple_command(uint8_t command
, uint8_t _data
);
126 static int opendous_get_status(void);
128 /* opendous tap buffer functions */
129 static void opendous_tap_init(void);
130 static int opendous_tap_execute(void);
131 static void opendous_tap_ensure_space(int scans
, int bits
);
132 static void opendous_tap_append_step(int tms
, int tdi
);
133 static void opendous_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
);
135 /* opendous lowlevel functions */
136 struct opendous_jtag
{
137 struct jtag_libusb_device_handle
*usb_handle
;
140 static struct opendous_jtag
*opendous_usb_open(void);
141 static void opendous_usb_close(struct opendous_jtag
*opendous_jtag
);
142 static int opendous_usb_message(struct opendous_jtag
*opendous_jtag
, int out_length
, int in_length
);
143 static int opendous_usb_write(struct opendous_jtag
*opendous_jtag
, int out_length
);
144 static int opendous_usb_read(struct opendous_jtag
*opendous_jtag
);
146 /* helper functions */
147 int opendous_get_version_info(void);
149 #ifdef _DEBUG_USB_COMMS_
150 static void opendous_debug_buffer(uint8_t *buffer
, int length
);
153 static struct opendous_jtag
*opendous_jtag_handle
;
155 /***************************************************************************/
156 /* External interface implementation */
158 COMMAND_HANDLER(opendous_handle_opendous_type_command
)
163 /* only if the cable name wasn't overwritten by cmdline */
164 if (opendous_type
== NULL
) {
165 /* REVISIT first verify that it's listed in cables[] ... */
166 opendous_type
= strdup(CMD_ARGV
[0]);
169 /* REVISIT it's probably worth returning the current value ... */
174 COMMAND_HANDLER(opendous_handle_opendous_info_command
)
176 if (opendous_get_version_info() == ERROR_OK
) {
177 /* attempt to get status */
178 opendous_get_status();
184 COMMAND_HANDLER(opendous_handle_opendous_hw_jtag_command
)
188 command_print(CMD
, "opendous hw jtag %i", opendous_hw_jtag_version
);
192 int request_version
= atoi(CMD_ARGV
[0]);
193 switch (request_version
) {
196 opendous_hw_jtag_version
= request_version
;
200 return ERROR_COMMAND_SYNTAX_ERROR
;
206 return ERROR_COMMAND_SYNTAX_ERROR
;
212 static const struct command_registration opendous_command_handlers
[] = {
214 .name
= "opendous_info",
215 .handler
= &opendous_handle_opendous_info_command
,
216 .mode
= COMMAND_EXEC
,
217 .help
= "show opendous info",
221 .name
= "opendous_hw_jtag",
222 .handler
= &opendous_handle_opendous_hw_jtag_command
,
223 .mode
= COMMAND_EXEC
,
224 .help
= "access opendous HW JTAG command version",
228 .name
= "opendous_type",
229 .handler
= &opendous_handle_opendous_type_command
,
230 .mode
= COMMAND_CONFIG
,
231 .help
= "set opendous type",
232 .usage
= "[usbvlab|usbprog-jtag|opendous]",
234 COMMAND_REGISTRATION_DONE
237 struct jtag_interface opendous_interface
= {
239 .commands
= opendous_command_handlers
,
240 .execute_queue
= opendous_execute_queue
,
241 .init
= opendous_init
,
242 .quit
= opendous_quit
,
245 static int opendous_execute_queue(void)
247 struct jtag_command
*cmd
= jtag_command_queue
;
252 while (cmd
!= NULL
) {
255 DEBUG_JTAG_IO("runtest %i cycles, end in %i", cmd
->cmd
.runtest
->num_cycles
, \
256 cmd
->cmd
.runtest
->end_state
);
258 if (cmd
->cmd
.runtest
->end_state
!= -1)
259 opendous_end_state(cmd
->cmd
.runtest
->end_state
);
260 opendous_runtest(cmd
->cmd
.runtest
->num_cycles
);
264 DEBUG_JTAG_IO("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
266 if (cmd
->cmd
.statemove
->end_state
!= -1)
267 opendous_end_state(cmd
->cmd
.statemove
->end_state
);
268 opendous_state_move();
272 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
273 cmd
->cmd
.pathmove
->num_states
, \
274 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
276 opendous_path_move(cmd
->cmd
.pathmove
->num_states
, cmd
->cmd
.pathmove
->path
);
280 DEBUG_JTAG_IO("scan end in %i", cmd
->cmd
.scan
->end_state
);
282 if (cmd
->cmd
.scan
->end_state
!= -1)
283 opendous_end_state(cmd
->cmd
.scan
->end_state
);
285 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
286 DEBUG_JTAG_IO("scan input, length = %d", scan_size
);
288 #ifdef _DEBUG_USB_COMMS_
289 opendous_debug_buffer(buffer
, (scan_size
+ 7) / 8);
291 type
= jtag_scan_type(cmd
->cmd
.scan
);
292 opendous_scan(cmd
->cmd
.scan
->ir_scan
, type
, buffer
, scan_size
, cmd
->cmd
.scan
);
296 DEBUG_JTAG_IO("reset trst: %i srst %i", cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
298 opendous_tap_execute();
300 if (cmd
->cmd
.reset
->trst
== 1)
301 tap_set_state(TAP_RESET
);
302 opendous_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
306 DEBUG_JTAG_IO("sleep %" PRIi32
, cmd
->cmd
.sleep
->us
);
307 opendous_tap_execute();
308 jtag_sleep(cmd
->cmd
.sleep
->us
);
312 LOG_ERROR("BUG: unknown JTAG command type encountered");
317 return opendous_tap_execute();
320 static int opendous_init(void)
323 const struct opendous_probe
*cur_opendous_probe
;
325 cur_opendous_probe
= opendous_probes
;
327 if (opendous_type
== NULL
) {
328 opendous_type
= strdup("opendous");
329 LOG_WARNING("No opendous_type specified, using default 'opendous'");
332 while (cur_opendous_probe
->name
) {
333 if (strcmp(cur_opendous_probe
->name
, opendous_type
) == 0) {
334 opendous_probe
= cur_opendous_probe
;
337 cur_opendous_probe
++;
340 if (!opendous_probe
) {
341 LOG_ERROR("No matching cable found for %s", opendous_type
);
342 return ERROR_JTAG_INIT_FAILED
;
346 usb_in_buffer
= malloc(opendous_probe
->BUFFERSIZE
);
347 usb_out_buffer
= malloc(opendous_probe
->BUFFERSIZE
);
349 pending_scan_results_buffer
= malloc(
350 MAX_PENDING_SCAN_RESULTS
* sizeof(*pending_scan_results_buffer
));
352 opendous_jtag_handle
= opendous_usb_open();
354 if (opendous_jtag_handle
== 0) {
355 LOG_ERROR("Cannot find opendous Interface! Please check connection and permissions.");
356 return ERROR_JTAG_INIT_FAILED
;
360 while (check_cnt
< 3) {
361 if (opendous_get_version_info() == ERROR_OK
) {
362 /* attempt to get status */
363 opendous_get_status();
370 LOG_INFO("opendous JTAG Interface ready");
372 opendous_reset(0, 0);
378 static int opendous_quit(void)
380 opendous_usb_close(opendous_jtag_handle
);
382 if (usb_out_buffer
) {
383 free(usb_out_buffer
);
384 usb_out_buffer
= NULL
;
389 usb_in_buffer
= NULL
;
392 if (pending_scan_results_buffer
) {
393 free(pending_scan_results_buffer
);
394 pending_scan_results_buffer
= NULL
;
399 opendous_type
= NULL
;
405 /***************************************************************************/
406 /* Queue command implementations */
408 void opendous_end_state(tap_state_t state
)
410 if (tap_is_state_stable(state
))
411 tap_set_end_state(state
);
413 LOG_ERROR("BUG: %i is not a valid end state", state
);
418 /* Goes to the end state. */
419 void opendous_state_move(void)
423 uint8_t tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
424 uint8_t tms_scan_bits
= tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
426 for (i
= 0; i
< tms_scan_bits
; i
++) {
427 tms
= (tms_scan
>> i
) & 1;
428 opendous_tap_append_step(tms
, 0);
431 tap_set_state(tap_get_end_state());
434 void opendous_path_move(int num_states
, tap_state_t
*path
)
438 for (i
= 0; i
< num_states
; i
++) {
439 if (path
[i
] == tap_state_transition(tap_get_state(), false))
440 opendous_tap_append_step(0, 0);
441 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
442 opendous_tap_append_step(1, 0);
444 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
445 tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
449 tap_set_state(path
[i
]);
452 tap_set_end_state(tap_get_state());
455 void opendous_runtest(int num_cycles
)
459 tap_state_t saved_end_state
= tap_get_end_state();
461 /* only do a state_move when we're not already in IDLE */
462 if (tap_get_state() != TAP_IDLE
) {
463 opendous_end_state(TAP_IDLE
);
464 opendous_state_move();
467 /* execute num_cycles */
468 for (i
= 0; i
< num_cycles
; i
++)
469 opendous_tap_append_step(0, 0);
471 /* finish in end_state */
472 opendous_end_state(saved_end_state
);
473 if (tap_get_state() != tap_get_end_state())
474 opendous_state_move();
477 void opendous_scan(int ir_scan
, enum scan_type type
, uint8_t *buffer
, int scan_size
, struct scan_command
*command
)
479 tap_state_t saved_end_state
;
481 opendous_tap_ensure_space(1, scan_size
+ 8);
483 saved_end_state
= tap_get_end_state();
485 /* Move to appropriate scan state */
486 opendous_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
488 if (tap_get_state() != tap_get_end_state())
489 opendous_state_move();
491 opendous_end_state(saved_end_state
);
494 opendous_tap_append_scan(scan_size
, buffer
, command
);
496 /* We are in Exit1, go to Pause */
497 opendous_tap_append_step(0, 0);
499 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
501 if (tap_get_state() != tap_get_end_state())
502 opendous_state_move();
505 void opendous_reset(int trst
, int srst
)
507 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
509 /* Signals are active low */
512 opendous_simple_command(JTAG_CMD_SET_SRST
, 1);
514 opendous_simple_command(JTAG_CMD_SET_SRST
, 0);
517 opendous_simple_command(JTAG_CMD_SET_TRST
, 1);
519 opendous_simple_command(JTAG_CMD_SET_TRST
, 0);
524 opendous_simple_command(JTAG_CMD_SET_SRST_TRST
, srst
| trst
);
527 void opendous_simple_command(uint8_t command
, uint8_t _data
)
531 DEBUG_JTAG_IO("0x%02x 0x%02x", command
, _data
);
533 usb_out_buffer
[0] = 2;
534 usb_out_buffer
[1] = 0;
535 usb_out_buffer
[2] = command
;
536 usb_out_buffer
[3] = _data
;
538 result
= opendous_usb_message(opendous_jtag_handle
, 4, 1);
540 LOG_ERROR("opendous command 0x%02x failed (%d)", command
, result
);
543 int opendous_get_status(void)
548 int opendous_get_version_info(void)
553 /***************************************************************************/
554 /* Estick tap functions */
556 static int tap_length
;
557 static uint8_t tms_buffer
[OPENDOUS_TAP_BUFFER_SIZE
];
558 static uint8_t tdo_buffer
[OPENDOUS_TAP_BUFFER_SIZE
];
562 void opendous_tap_init(void)
565 pending_scan_results_length
= 0;
568 void opendous_tap_ensure_space(int scans
, int bits
)
570 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
571 int available_bits
= OPENDOUS_TAP_BUFFER_SIZE
/ 2 - tap_length
;
573 if ((scans
> available_scans
) || (bits
> available_bits
))
574 opendous_tap_execute();
577 void opendous_tap_append_step(int tms
, int tdi
)
580 unsigned char _tms
= tms
? 1 : 0;
581 unsigned char _tdi
= tdi
? 1 : 0;
583 opendous_tap_ensure_space(0, 1);
585 int tap_index
= tap_length
/ 4;
586 int bits
= (tap_length
% 4) * 2;
588 if (tap_length
< OPENDOUS_TAP_BUFFER_SIZE
) {
590 tms_buffer
[tap_index
] = 0;
592 tms_buffer
[tap_index
] |= (_tdi
<< bits
)|(_tms
<< (bits
+ 1)) ;
595 LOG_ERROR("opendous_tap_append_step, overflow");
598 void opendous_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
)
600 DEBUG_JTAG_IO("append scan, length = %d", length
);
602 struct pending_scan_result
*pending_scan_result
= &pending_scan_results_buffer
[pending_scan_results_length
];
605 pending_scan_result
->first
= tap_length
;
606 pending_scan_result
->length
= length
;
607 pending_scan_result
->command
= command
;
608 pending_scan_result
->buffer
= buffer
;
610 for (i
= 0; i
< length
; i
++)
611 opendous_tap_append_step((i
< length
-1 ? 0 : 1), (buffer
[i
/ 8] >> (i
% 8)) & 1);
612 pending_scan_results_length
++;
615 /* Pad and send a tap sequence to the device, and receive the answer.
616 * For the purpose of padding we assume that we are in idle or pause state. */
617 int opendous_tap_execute(void)
623 #ifdef _DEBUG_USB_COMMS_
627 if (tap_length
> 0) {
629 /* memset(tdo_buffer,0,OPENDOUS_TAP_BUFFER_SIZE); */
630 /* LOG_INFO("OPENDOUS tap execute %d",tap_length); */
631 byte_length
= (tap_length
+ 3) / 4;
633 #ifdef _DEBUG_USB_COMMS_
634 byte_length_out
= (tap_length
+ 7) / 8;
635 LOG_DEBUG("opendous is sending %d bytes", byte_length
);
638 for (j
= 0, i
= 0; j
< byte_length
;) {
641 int transmit
= byte_length
- j
;
642 if (transmit
> OPENDOUS_MAX_TAP_TRANSMIT
) {
643 transmit
= OPENDOUS_MAX_TAP_TRANSMIT
;
644 receive
= (OPENDOUS_MAX_TAP_TRANSMIT
) / 2;
645 usb_out_buffer
[2] = JTAG_CMD_TAP_OUTPUT
;
647 usb_out_buffer
[2] = JTAG_CMD_TAP_OUTPUT
| ((tap_length
% 4) << 4);
648 receive
= (transmit
+ 1) / 2;
650 usb_out_buffer
[0] = (transmit
+ 1) & 0xff;
651 usb_out_buffer
[1] = ((transmit
+ 1) >> 8) & 0xff;
653 memmove(usb_out_buffer
+ 3, tms_buffer
+ j
, transmit
);
654 result
= opendous_usb_message(opendous_jtag_handle
, 3 + transmit
, receive
);
655 if (result
!= receive
) {
656 LOG_ERROR("opendous_tap_execute, wrong result %d, expected %d", result
, receive
);
657 return ERROR_JTAG_QUEUE_FAILED
;
660 memmove(tdo_buffer
+ i
, usb_in_buffer
, receive
);
665 #ifdef _DEBUG_USB_COMMS_
666 LOG_DEBUG("opendous tap result %d", byte_length_out
);
667 opendous_debug_buffer(tdo_buffer
, byte_length_out
);
670 /* LOG_INFO("eStick tap execute %d",tap_length); */
671 for (i
= 0; i
< pending_scan_results_length
; i
++) {
673 struct pending_scan_result
*pending_scan_result
= &pending_scan_results_buffer
[i
];
674 uint8_t *buffer
= pending_scan_result
->buffer
;
675 int length
= pending_scan_result
->length
;
676 int first
= pending_scan_result
->first
;
677 struct scan_command
*command
= pending_scan_result
->command
;
680 buf_set_buf(tdo_buffer
, first
, buffer
, 0, length
);
682 DEBUG_JTAG_IO("pending scan result, length = %d", length
);
684 #ifdef _DEBUG_USB_COMMS_
685 opendous_debug_buffer(buffer
, byte_length_out
);
688 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
) {
690 return ERROR_JTAG_QUEUE_FAILED
;
693 if (pending_scan_result
->buffer
!= NULL
)
694 free(pending_scan_result
->buffer
);
703 /*****************************************************************************/
704 /* Estick USB low-level functions */
706 struct opendous_jtag
*opendous_usb_open(void)
708 struct opendous_jtag
*result
;
710 struct jtag_libusb_device_handle
*devh
;
711 if (jtag_libusb_open(opendous_probe
->VID
, opendous_probe
->PID
, NULL
, &devh
) != ERROR_OK
)
714 jtag_libusb_set_configuration(devh
, 0);
715 jtag_libusb_claim_interface(devh
, 0);
717 result
= malloc(sizeof(*result
));
718 result
->usb_handle
= devh
;
722 void opendous_usb_close(struct opendous_jtag
*opendous_jtag
)
724 jtag_libusb_close(opendous_jtag
->usb_handle
);
728 /* Send a message and receive the reply. */
729 int opendous_usb_message(struct opendous_jtag
*opendous_jtag
, int out_length
, int in_length
)
733 result
= opendous_usb_write(opendous_jtag
, out_length
);
734 if (result
== out_length
) {
735 result
= opendous_usb_read(opendous_jtag
);
736 if (result
== in_length
)
739 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)", in_length
, result
);
743 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length
, result
);
748 /* Write data from out_buffer to USB. */
749 int opendous_usb_write(struct opendous_jtag
*opendous_jtag
, int out_length
)
753 if (out_length
> OPENDOUS_OUT_BUFFER_SIZE
) {
754 LOG_ERROR("opendous_jtag_write illegal out_length=%d (max=%d)", out_length
, OPENDOUS_OUT_BUFFER_SIZE
);
758 #ifdef _DEBUG_USB_COMMS_
759 LOG_DEBUG("USB write begin");
761 if (opendous_probe
->CONTROL_TRANSFER
) {
762 result
= jtag_libusb_control_transfer(opendous_jtag
->usb_handle
,
763 LIBUSB_REQUEST_TYPE_VENDOR
| LIBUSB_RECIPIENT_DEVICE
| LIBUSB_ENDPOINT_OUT
,
764 FUNC_WRITE_DATA
, 0, 0, (char *) usb_out_buffer
, out_length
, OPENDOUS_USB_TIMEOUT
);
766 result
= jtag_libusb_bulk_write(opendous_jtag
->usb_handle
, OPENDOUS_WRITE_ENDPOINT
, \
767 (char *)usb_out_buffer
, out_length
, OPENDOUS_USB_TIMEOUT
);
769 #ifdef _DEBUG_USB_COMMS_
770 LOG_DEBUG("USB write end: %d bytes", result
);
773 DEBUG_JTAG_IO("opendous_usb_write, out_length = %d, result = %d", out_length
, result
);
775 #ifdef _DEBUG_USB_COMMS_
776 opendous_debug_buffer(usb_out_buffer
, out_length
);
781 /* Read data from USB into in_buffer. */
782 int opendous_usb_read(struct opendous_jtag
*opendous_jtag
)
784 #ifdef _DEBUG_USB_COMMS_
785 LOG_DEBUG("USB read begin");
788 if (opendous_probe
->CONTROL_TRANSFER
) {
789 result
= jtag_libusb_control_transfer(opendous_jtag
->usb_handle
,
790 LIBUSB_REQUEST_TYPE_VENDOR
| LIBUSB_RECIPIENT_DEVICE
| LIBUSB_ENDPOINT_IN
,
791 FUNC_READ_DATA
, 0, 0, (char *) usb_in_buffer
, OPENDOUS_IN_BUFFER_SIZE
, OPENDOUS_USB_TIMEOUT
);
793 result
= jtag_libusb_bulk_read(opendous_jtag
->usb_handle
, OPENDOUS_READ_ENDPOINT
,
794 (char *)usb_in_buffer
, OPENDOUS_IN_BUFFER_SIZE
, OPENDOUS_USB_TIMEOUT
);
796 #ifdef _DEBUG_USB_COMMS_
797 LOG_DEBUG("USB read end: %d bytes", result
);
799 DEBUG_JTAG_IO("opendous_usb_read, result = %d", result
);
801 #ifdef _DEBUG_USB_COMMS_
802 opendous_debug_buffer(usb_in_buffer
, result
);
807 #ifdef _DEBUG_USB_COMMS_
808 #define BYTES_PER_LINE 16
810 void opendous_debug_buffer(uint8_t *buffer
, int length
)
817 for (i
= 0; i
< length
; i
+= BYTES_PER_LINE
) {
818 snprintf(line
, 5, "%04x", i
);
819 for (j
= i
; j
< i
+ BYTES_PER_LINE
&& j
< length
; j
++) {
820 snprintf(s
, 4, " %02x", buffer
[j
]);
823 LOG_DEBUG("%s", line
);
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