1 /***************************************************************************
2 * Copyright (C) 2009 by Dimitar Dimitrov <dinuxbg@gmail.com> *
3 * based on Dominic Rath's and Benedikt Sauter's usbprog.c *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
17 ***************************************************************************/
23 #include <jtag/interface.h>
24 #include <jtag/commands.h>
26 #include "usb_common.h"
28 #define USB_VID 0x15ba
29 #define USB_PID 0x001e
31 #define ARMJTAGEW_EPT_BULK_OUT 0x01u
32 #define ARMJTAGEW_EPT_BULK_IN 0x82u
34 #define ARMJTAGEW_USB_TIMEOUT 2000
36 #define ARMJTAGEW_IN_BUFFER_SIZE (4*1024)
37 #define ARMJTAGEW_OUT_BUFFER_SIZE (4*1024)
39 /* USB command request codes. */
40 #define CMD_GET_VERSION 0x00
41 #define CMD_SELECT_DPIMPL 0x10
42 #define CMD_SET_TCK_FREQUENCY 0x11
43 #define CMD_GET_TCK_FREQUENCY 0x12
44 #define CMD_MEASURE_MAX_TCK_FREQ 0x15
45 #define CMD_MEASURE_RTCK_RESPONSE 0x16
46 #define CMD_TAP_SHIFT 0x17
47 #define CMD_SET_TAPHW_STATE 0x20
48 #define CMD_GET_TAPHW_STATE 0x21
49 #define CMD_TGPWR_SETUP 0x22
51 /* Global USB buffers */
52 static uint8_t usb_in_buffer
[ARMJTAGEW_IN_BUFFER_SIZE
];
53 static uint8_t usb_out_buffer
[ARMJTAGEW_OUT_BUFFER_SIZE
];
55 /* Queue command functions */
56 static void armjtagew_end_state(tap_state_t state
);
57 static void armjtagew_state_move(void);
58 static void armjtagew_path_move(int num_states
, tap_state_t
*path
);
59 static void armjtagew_runtest(int num_cycles
);
60 static void armjtagew_scan(bool ir_scan
,
64 struct scan_command
*command
);
65 static void armjtagew_reset(int trst
, int srst
);
66 /* static void armjtagew_simple_command(uint8_t command); */
67 static int armjtagew_get_status(void);
69 /* tap buffer functions */
70 static void armjtagew_tap_init(void);
71 static int armjtagew_tap_execute(void);
72 static void armjtagew_tap_ensure_space(int scans
, int bits
);
73 static void armjtagew_tap_append_step(int tms
, int tdi
);
74 static void armjtagew_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
);
76 /* ARM-JTAG-EW lowlevel functions */
78 struct usb_dev_handle
*usb_handle
;
81 static struct armjtagew
*armjtagew_usb_open(void);
82 static void armjtagew_usb_close(struct armjtagew
*armjtagew
);
83 static int armjtagew_usb_message(struct armjtagew
*armjtagew
, int out_length
, int in_length
);
84 static int armjtagew_usb_write(struct armjtagew
*armjtagew
, int out_length
);
85 static int armjtagew_usb_read(struct armjtagew
*armjtagew
, int exp_in_length
);
87 /* helper functions */
88 static int armjtagew_get_version_info(void);
90 #ifdef _DEBUG_USB_COMMS_
91 static void armjtagew_debug_buffer(uint8_t *buffer
, int length
);
94 static struct armjtagew
*armjtagew_handle
;
96 /**************************************************************************
97 * External interface implementation */
99 static int armjtagew_execute_queue(void)
101 struct jtag_command
*cmd
= jtag_command_queue
;
106 while (cmd
!= NULL
) {
109 DEBUG_JTAG_IO("runtest %i cycles, end in %i",
110 cmd
->cmd
.runtest
->num_cycles
, \
111 cmd
->cmd
.runtest
->end_state
);
113 armjtagew_end_state(cmd
->cmd
.runtest
->end_state
);
114 armjtagew_runtest(cmd
->cmd
.runtest
->num_cycles
);
118 DEBUG_JTAG_IO("statemove end in %i", cmd
->cmd
.statemove
->end_state
);
120 armjtagew_end_state(cmd
->cmd
.statemove
->end_state
);
121 armjtagew_state_move();
125 DEBUG_JTAG_IO("pathmove: %i states, end in %i", \
126 cmd
->cmd
.pathmove
->num_states
, \
127 cmd
->cmd
.pathmove
->path
[cmd
->cmd
.pathmove
->num_states
- 1]);
129 armjtagew_path_move(cmd
->cmd
.pathmove
->num_states
,
130 cmd
->cmd
.pathmove
->path
);
134 DEBUG_JTAG_IO("scan end in %i", cmd
->cmd
.scan
->end_state
);
136 armjtagew_end_state(cmd
->cmd
.scan
->end_state
);
138 scan_size
= jtag_build_buffer(cmd
->cmd
.scan
, &buffer
);
139 DEBUG_JTAG_IO("scan input, length = %d", scan_size
);
141 #ifdef _DEBUG_USB_COMMS_
142 armjtagew_debug_buffer(buffer
, (scan_size
+ 7) / 8);
144 type
= jtag_scan_type(cmd
->cmd
.scan
);
145 armjtagew_scan(cmd
->cmd
.scan
->ir_scan
,
147 scan_size
, cmd
->cmd
.scan
);
151 DEBUG_JTAG_IO("reset trst: %i srst %i",
152 cmd
->cmd
.reset
->trst
,
153 cmd
->cmd
.reset
->srst
);
155 armjtagew_tap_execute();
157 if (cmd
->cmd
.reset
->trst
== 1)
158 tap_set_state(TAP_RESET
);
159 armjtagew_reset(cmd
->cmd
.reset
->trst
, cmd
->cmd
.reset
->srst
);
163 DEBUG_JTAG_IO("sleep %i", cmd
->cmd
.sleep
->us
);
164 armjtagew_tap_execute();
165 jtag_sleep(cmd
->cmd
.sleep
->us
);
169 LOG_ERROR("BUG: unknown JTAG command type encountered");
175 return armjtagew_tap_execute();
178 /* Sets speed in kHz. */
179 static int armjtagew_speed(int speed
)
185 usb_out_buffer
[0] = CMD_SET_TCK_FREQUENCY
;
186 buf_set_u32(usb_out_buffer
+ 1, 0, 32, speed
*1000);
188 result
= armjtagew_usb_message(armjtagew_handle
, 5, 4);
191 LOG_ERROR("ARM-JTAG-EW setting speed failed (%d)", result
);
192 return ERROR_JTAG_DEVICE_ERROR
;
195 usb_out_buffer
[0] = CMD_GET_TCK_FREQUENCY
;
196 result
= armjtagew_usb_message(armjtagew_handle
, 1, 4);
197 speed_real
= (int)buf_get_u32(usb_in_buffer
, 0, 32) / 1000;
199 LOG_ERROR("ARM-JTAG-EW getting speed failed (%d)", result
);
200 return ERROR_JTAG_DEVICE_ERROR
;
202 LOG_INFO("Requested speed %dkHz, emulator reported %dkHz.", speed
, speed_real
);
207 static int armjtagew_khz(int khz
, int *jtag_speed
)
214 static int armjtagew_speed_div(int speed
, int *khz
)
221 static int armjtagew_init(void)
225 armjtagew_handle
= armjtagew_usb_open();
227 if (armjtagew_handle
== 0) {
229 "Cannot find ARM-JTAG-EW Interface! Please check connection and permissions.");
230 return ERROR_JTAG_INIT_FAILED
;
234 while (check_cnt
< 3) {
235 if (armjtagew_get_version_info() == ERROR_OK
) {
236 /* attempt to get status */
237 armjtagew_get_status();
245 LOG_INFO("ARM-JTAG-EW initial read failed, don't worry");
247 /* Initial JTAG speed (for reset and initialization): 32 kHz */
250 LOG_INFO("ARM-JTAG-EW JTAG Interface ready");
252 armjtagew_reset(0, 0);
253 armjtagew_tap_init();
258 static int armjtagew_quit(void)
260 armjtagew_usb_close(armjtagew_handle
);
264 /**************************************************************************
265 * Queue command implementations */
267 static void armjtagew_end_state(tap_state_t state
)
269 if (tap_is_state_stable(state
))
270 tap_set_end_state(state
);
272 LOG_ERROR("BUG: %i is not a valid end state", state
);
277 /* Goes to the end state. */
278 static void armjtagew_state_move(void)
282 uint8_t tms_scan
= tap_get_tms_path(tap_get_state(), tap_get_end_state());
283 int tms_count
= tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
285 for (i
= 0; i
< tms_count
; i
++) {
286 tms
= (tms_scan
>> i
) & 1;
287 armjtagew_tap_append_step(tms
, 0);
290 tap_set_state(tap_get_end_state());
293 static void armjtagew_path_move(int num_states
, tap_state_t
*path
)
297 for (i
= 0; i
< num_states
; i
++) {
299 * TODO: The ARM-JTAG-EW hardware delays TDI with 3 TCK cycles when in RTCK mode.
300 * Either handle that here, or update the documentation with examples
301 * how to fix that in the configuration files.
303 if (path
[i
] == tap_state_transition(tap_get_state(), false))
304 armjtagew_tap_append_step(0, 0);
305 else if (path
[i
] == tap_state_transition(tap_get_state(), true))
306 armjtagew_tap_append_step(1, 0);
308 LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition",
309 tap_state_name(tap_get_state()), tap_state_name(path
[i
]));
313 tap_set_state(path
[i
]);
316 tap_set_end_state(tap_get_state());
319 static void armjtagew_runtest(int num_cycles
)
323 tap_state_t saved_end_state
= tap_get_end_state();
325 /* only do a state_move when we're not already in IDLE */
326 if (tap_get_state() != TAP_IDLE
) {
327 armjtagew_end_state(TAP_IDLE
);
328 armjtagew_state_move();
331 /* execute num_cycles */
332 for (i
= 0; i
< num_cycles
; i
++)
333 armjtagew_tap_append_step(0, 0);
335 /* finish in end_state */
336 armjtagew_end_state(saved_end_state
);
337 if (tap_get_state() != tap_get_end_state())
338 armjtagew_state_move();
341 static void armjtagew_scan(bool ir_scan
,
345 struct scan_command
*command
)
347 tap_state_t saved_end_state
;
349 armjtagew_tap_ensure_space(1, scan_size
+ 8);
351 saved_end_state
= tap_get_end_state();
353 /* Move to appropriate scan state */
354 armjtagew_end_state(ir_scan
? TAP_IRSHIFT
: TAP_DRSHIFT
);
356 /* Only move if we're not already there */
357 if (tap_get_state() != tap_get_end_state())
358 armjtagew_state_move();
360 armjtagew_end_state(saved_end_state
);
363 armjtagew_tap_append_scan(scan_size
, buffer
, command
);
365 /* We are in Exit1, go to Pause */
366 armjtagew_tap_append_step(0, 0);
368 tap_set_state(ir_scan
? TAP_IRPAUSE
: TAP_DRPAUSE
);
370 if (tap_get_state() != tap_get_end_state())
371 armjtagew_state_move();
374 static void armjtagew_reset(int trst
, int srst
)
376 const uint8_t trst_mask
= (1u << 5);
377 const uint8_t srst_mask
= (1u << 6);
380 uint8_t change_mask
= 0;
383 LOG_DEBUG("trst: %i, srst: %i", trst
, srst
);
387 outp_en
&= ~srst_mask
; /* tristate */
388 change_mask
|= srst_mask
;
389 } else if (srst
== 1) {
391 outp_en
|= srst_mask
;
392 change_mask
|= srst_mask
;
397 outp_en
&= ~trst_mask
; /* tristate */
398 change_mask
|= trst_mask
;
399 } else if (trst
== 1) {
401 outp_en
|= trst_mask
;
402 change_mask
|= trst_mask
;
405 usb_out_buffer
[0] = CMD_SET_TAPHW_STATE
;
406 usb_out_buffer
[1] = val
;
407 usb_out_buffer
[2] = outp_en
;
408 usb_out_buffer
[3] = change_mask
;
409 result
= armjtagew_usb_write(armjtagew_handle
, 4);
411 LOG_ERROR("ARM-JTAG-EW TRST/SRST pin set failed failed (%d)", result
);
414 static int armjtagew_get_status(void)
418 usb_out_buffer
[0] = CMD_GET_TAPHW_STATE
;
419 result
= armjtagew_usb_message(armjtagew_handle
, 1, 12);
422 unsigned int u_tg
= buf_get_u32(usb_in_buffer
, 0, 16);
424 "U_tg = %d mV, U_aux = %d mV, U_tgpwr = %d mV, I_tgpwr = %d mA, D1 = %d, Target power %s %s",
425 (int)(buf_get_u32(usb_in_buffer
+ 0, 0, 16)),
426 (int)(buf_get_u32(usb_in_buffer
+ 2, 0, 16)),
427 (int)(buf_get_u32(usb_in_buffer
+ 4, 0, 16)),
428 (int)(buf_get_u32(usb_in_buffer
+ 6, 0, 16)),
430 usb_in_buffer
[11] ? "OVERCURRENT" : "OK",
431 usb_in_buffer
[10] ? "enabled" : "disabled");
434 LOG_ERROR("Vref too low. Check Target Power");
436 LOG_ERROR("ARM-JTAG-EW command CMD_GET_TAPHW_STATE failed (%d)", result
);
441 static int armjtagew_get_version_info(void)
447 /* query hardware version */
448 usb_out_buffer
[0] = CMD_GET_VERSION
;
449 result
= armjtagew_usb_message(armjtagew_handle
, 1, 4 + 15 + 256);
452 LOG_ERROR("ARM-JTAG-EW command CMD_GET_VERSION failed (%d)", result
);
453 return ERROR_JTAG_DEVICE_ERROR
;
456 memcpy(sn
, usb_in_buffer
+ 4, 15);
458 memcpy(auxinfo
, usb_in_buffer
+ 4+15, 256);
462 "ARM-JTAG-EW firmware version %d.%d, hardware revision %c, SN=%s, Additional info: %s", \
465 isgraph(usb_in_buffer
[2]) ? usb_in_buffer
[2] : 'X', \
469 if (1 != usb_in_buffer
[1] || 6 != usb_in_buffer
[0])
471 "ARM-JTAG-EW firmware version %d.%d is untested with this version of OpenOCD. You might experience unexpected behavior.",
477 COMMAND_HANDLER(armjtagew_handle_armjtagew_info_command
)
479 if (armjtagew_get_version_info() == ERROR_OK
) {
480 /* attempt to get status */
481 armjtagew_get_status();
487 static const struct command_registration armjtagew_command_handlers
[] = {
489 .name
= "armjtagew_info",
490 .handler
= &armjtagew_handle_armjtagew_info_command
,
491 .mode
= COMMAND_EXEC
,
492 .help
= "query armjtagew info",
494 COMMAND_REGISTRATION_DONE
497 struct jtag_interface armjtagew_interface
= {
498 .name
= "arm-jtag-ew",
499 .commands
= armjtagew_command_handlers
,
500 .transports
= jtag_only
,
501 .execute_queue
= armjtagew_execute_queue
,
502 .speed
= armjtagew_speed
,
503 .speed_div
= armjtagew_speed_div
,
504 .khz
= armjtagew_khz
,
505 .init
= armjtagew_init
,
506 .quit
= armjtagew_quit
,
509 /**************************************************************************
510 * ARM-JTAG-EW tap functions */
512 /* 2048 is the max value we can use here */
513 #define ARMJTAGEW_TAP_BUFFER_SIZE 2048
515 static int tap_length
;
516 static uint8_t tms_buffer
[ARMJTAGEW_TAP_BUFFER_SIZE
];
517 static uint8_t tdi_buffer
[ARMJTAGEW_TAP_BUFFER_SIZE
];
518 static uint8_t tdo_buffer
[ARMJTAGEW_TAP_BUFFER_SIZE
];
520 struct pending_scan_result
{
521 int first
; /* First bit position in tdo_buffer to read */
522 int length
; /* Number of bits to read */
523 struct scan_command
*command
; /* Corresponding scan command */
527 #define MAX_PENDING_SCAN_RESULTS 256
529 static int pending_scan_results_length
;
530 static struct pending_scan_result pending_scan_results_buffer
[MAX_PENDING_SCAN_RESULTS
];
534 static void armjtagew_tap_init(void)
537 pending_scan_results_length
= 0;
540 static void armjtagew_tap_ensure_space(int scans
, int bits
)
542 int available_scans
= MAX_PENDING_SCAN_RESULTS
- pending_scan_results_length
;
543 int available_bits
= ARMJTAGEW_TAP_BUFFER_SIZE
* 8 - tap_length
;
545 if (scans
> available_scans
|| bits
> available_bits
)
546 armjtagew_tap_execute();
549 static void armjtagew_tap_append_step(int tms
, int tdi
)
552 int index_local
= tap_length
/ 8;
554 if (index_local
< ARMJTAGEW_TAP_BUFFER_SIZE
) {
555 int bit_index
= tap_length
% 8;
556 uint8_t bit
= 1 << bit_index
;
559 tms_buffer
[index_local
] |= bit
;
561 tms_buffer
[index_local
] &= ~bit
;
564 tdi_buffer
[index_local
] |= bit
;
566 tdi_buffer
[index_local
] &= ~bit
;
570 LOG_ERROR("armjtagew_tap_append_step, overflow");
573 void armjtagew_tap_append_scan(int length
, uint8_t *buffer
, struct scan_command
*command
)
575 struct pending_scan_result
*pending_scan_result
=
576 &pending_scan_results_buffer
[pending_scan_results_length
];
579 pending_scan_result
->first
= tap_length
;
580 pending_scan_result
->length
= length
;
581 pending_scan_result
->command
= command
;
582 pending_scan_result
->buffer
= buffer
;
584 for (i
= 0; i
< length
; i
++)
585 armjtagew_tap_append_step((i
< length
-1 ? 0 : 1), (buffer
[i
/8] >> (i
%8)) & 1);
586 pending_scan_results_length
++;
589 /* Pad and send a tap sequence to the device, and receive the answer.
590 * For the purpose of padding we assume that we are in idle or pause state. */
591 static int armjtagew_tap_execute(void)
599 if (tap_length
> 0) {
600 /* Pad last byte so that tap_length is divisible by 8 */
601 while (tap_length
% 8 != 0) {
602 /* More of the last TMS value keeps us in the same state,
603 * analogous to free-running JTAG interfaces. */
604 armjtagew_tap_append_step(last_tms
, 0);
607 byte_length
= tap_length
/ 8;
609 usb_out_buffer
[0] = CMD_TAP_SHIFT
;
610 buf_set_u32(usb_out_buffer
+ 1, 0, 16, byte_length
);
613 for (i
= 0; i
< byte_length
; i
++)
614 usb_out_buffer
[tms_offset
+ i
] = flip_u32(tms_buffer
[i
], 8);
616 tdi_offset
= tms_offset
+ byte_length
;
617 for (i
= 0; i
< byte_length
; i
++)
618 usb_out_buffer
[tdi_offset
+ i
] = flip_u32(tdi_buffer
[i
], 8);
620 result
= armjtagew_usb_message(armjtagew_handle
,
627 stat_local
= (int)buf_get_u32(usb_in_buffer
+ byte_length
, 0, 32);
630 "armjtagew_tap_execute, emulator returned error code %d for a CMD_TAP_SHIFT command",
632 return ERROR_JTAG_QUEUE_FAILED
;
635 for (i
= 0; i
< byte_length
; i
++)
636 tdo_buffer
[i
] = flip_u32(usb_in_buffer
[i
], 8);
638 for (i
= 0; i
< pending_scan_results_length
; i
++) {
639 struct pending_scan_result
*pending_scan_result
=
640 &pending_scan_results_buffer
[i
];
641 uint8_t *buffer
= pending_scan_result
->buffer
;
642 int length
= pending_scan_result
->length
;
643 int first
= pending_scan_result
->first
;
644 struct scan_command
*command
= pending_scan_result
->command
;
647 buf_set_buf(tdo_buffer
, first
, buffer
, 0, length
);
649 DEBUG_JTAG_IO("pending scan result, length = %d", length
);
651 #ifdef _DEBUG_USB_COMMS_
652 armjtagew_debug_buffer(buffer
, byte_length
);
655 if (jtag_read_buffer(buffer
, command
) != ERROR_OK
) {
656 armjtagew_tap_init();
657 return ERROR_JTAG_QUEUE_FAILED
;
660 if (pending_scan_result
->buffer
!= NULL
)
661 free(pending_scan_result
->buffer
);
664 LOG_ERROR("armjtagew_tap_execute, wrong result %d, expected %d",
667 return ERROR_JTAG_QUEUE_FAILED
;
670 armjtagew_tap_init();
676 /****************************************************************************
677 * JLink USB low-level functions */
679 static struct armjtagew
*armjtagew_usb_open()
683 const uint16_t vids
[] = { USB_VID
, 0 };
684 const uint16_t pids
[] = { USB_PID
, 0 };
685 struct usb_dev_handle
*dev
;
686 if (jtag_usb_open(vids
, pids
, &dev
) != ERROR_OK
)
689 struct armjtagew
*result
= malloc(sizeof(struct armjtagew
));
690 result
->usb_handle
= dev
;
693 /* usb_set_configuration required under win32 */
694 usb_set_configuration(dev
, dev
->config
[0].bConfigurationValue
);
696 usb_claim_interface(dev
, 0);
699 * This makes problems under Mac OS X. And is not needed
700 * under Windows. Hopefully this will not break a linux build
702 usb_set_altinterface(dev
, 0);
707 static void armjtagew_usb_close(struct armjtagew
*armjtagew
)
709 usb_close(armjtagew
->usb_handle
);
713 /* Send a message and receive the reply. */
714 static int armjtagew_usb_message(struct armjtagew
*armjtagew
, int out_length
, int in_length
)
718 result
= armjtagew_usb_write(armjtagew
, out_length
);
719 if (result
== out_length
) {
720 result
= armjtagew_usb_read(armjtagew
, in_length
);
721 if (result
!= in_length
) {
722 LOG_ERROR("usb_bulk_read failed (requested=%d, result=%d)",
728 LOG_ERROR("usb_bulk_write failed (requested=%d, result=%d)", out_length
, result
);
734 /* Write data from out_buffer to USB. */
735 static int armjtagew_usb_write(struct armjtagew
*armjtagew
, int out_length
)
739 if (out_length
> ARMJTAGEW_OUT_BUFFER_SIZE
) {
740 LOG_ERROR("armjtagew_write illegal out_length=%d (max=%d)",
742 ARMJTAGEW_OUT_BUFFER_SIZE
);
746 result
= usb_bulk_write(armjtagew
->usb_handle
, ARMJTAGEW_EPT_BULK_OUT
, \
747 (char *)usb_out_buffer
, out_length
, ARMJTAGEW_USB_TIMEOUT
);
749 DEBUG_JTAG_IO("armjtagew_usb_write, out_length = %d, result = %d", out_length
, result
);
751 #ifdef _DEBUG_USB_COMMS_
752 armjtagew_debug_buffer(usb_out_buffer
, out_length
);
757 /* Read data from USB into in_buffer. */
758 static int armjtagew_usb_read(struct armjtagew
*armjtagew
, int exp_in_length
)
760 int result
= usb_bulk_read(armjtagew
->usb_handle
, ARMJTAGEW_EPT_BULK_IN
, \
761 (char *)usb_in_buffer
, exp_in_length
, ARMJTAGEW_USB_TIMEOUT
);
763 DEBUG_JTAG_IO("armjtagew_usb_read, result = %d", result
);
765 #ifdef _DEBUG_USB_COMMS_
766 armjtagew_debug_buffer(usb_in_buffer
, result
);
771 #ifdef _DEBUG_USB_COMMS_
772 #define BYTES_PER_LINE 16
774 static void armjtagew_debug_buffer(uint8_t *buffer
, int length
)
781 for (i
= 0; i
< length
; i
+= BYTES_PER_LINE
) {
782 snprintf(line
, 5, "%04x", i
);
783 for (j
= i
; j
< i
+ BYTES_PER_LINE
&& j
< length
; j
++) {
784 snprintf(s
, 4, " %02x", buffer
[j
]);
787 LOG_DEBUG("%s", line
);
789 /* Prevent GDB timeout (writing to log might take some time) */
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