1 /***************************************************************************
2 * Copyright (C) 2013 by mike brown *
3 * mike@theshedworks.org.uk *
5 * Copyright (C) 2013 by Spencer Oliver *
6 * spen@spen-soft.co.uk *
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 2 of the License, or *
11 * (at your option) any later version. *
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. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. *
22 ***************************************************************************/
28 #include <transport/transport.h>
30 #include <jtag/interface.h>
31 #include <jtag/commands.h>
36 #ifdef _DEBUG_JTAG_IO_
37 #define DEBUG_IO(expr...) LOG_DEBUG(expr)
39 #define DEBUG_IO(expr...) do {} while (0)
43 * See CMSIS-DAP documentation:
44 * Version 0.01 - Beta.
49 /* Known vid/pid pairs:
50 * VID 0xc251: Keil Software
51 * PID 0xf001: LPC-Link-II CMSIS_DAP
52 * PID 0xf002: OPEN-SDA CMSIS_DAP (Freedom Board)
53 * PID 0x2722: Keil ULINK2 CMSIS-DAP
55 * VID 0x0d28: mbed Software
56 * PID 0x0204: MBED CMSIS-DAP
60 /* vid = pid = 0 marks the end of the list */
61 static uint16_t cmsis_dap_vid[MAX_USB_IDS + 1] = { 0 };
62 static uint16_t cmsis_dap_pid[MAX_USB_IDS + 1] = { 0 };
64 #define PACKET_SIZE (64 + 1) /* 64 bytes plus report id */
65 #define USB_TIMEOUT 1000
67 /* CMSIS-DAP General Commands */
68 #define CMD_DAP_INFO 0x00
69 #define CMD_DAP_LED 0x01
70 #define CMD_DAP_CONNECT 0x02
71 #define CMD_DAP_DISCONNECT 0x03
72 #define CMD_DAP_WRITE_ABORT 0x08
73 #define CMD_DAP_DELAY 0x09
74 #define CMD_DAP_RESET_TARGET 0x0A
77 #define INFO_ID_VID 0x00 /* string */
78 #define INFO_ID_PID 0x02 /* string */
79 #define INFO_ID_SERNUM 0x03 /* string */
80 #define INFO_ID_FW_VER 0x04 /* string */
81 #define INFO_ID_TD_VEND 0x05 /* string */
82 #define INFO_ID_TD_NAME 0x06 /* string */
83 #define INFO_ID_CAPS 0xf0 /* byte */
84 #define INFO_ID_PKT_CNT 0xfe /* byte */
85 #define INFO_ID_PKT_SZ 0xff /* short */
87 #define INFO_CAPS_SWD 0x01
88 #define INFO_CAPS_JTAG 0x02
91 #define LED_ID_CONNECT 0x00
92 #define LED_ID_RUN 0x01
98 #define CONNECT_DEFAULT 0x00
99 #define CONNECT_SWD 0x01
100 #define CONNECT_JTAG 0x02
102 /* CMSIS-DAP Common SWD/JTAG Commands */
103 #define CMD_DAP_DELAY 0x09
104 #define CMD_DAP_SWJ_PINS 0x10
105 #define CMD_DAP_SWJ_CLOCK 0x11
106 #define CMD_DAP_SWJ_SEQ 0x12
118 /* CMSIS-DAP SWD Commands */
119 #define CMD_DAP_SWD_CONFIGURE 0x13
121 /* CMSIS-DAP JTAG Commands */
122 #define CMD_DAP_JTAG_SEQ 0x14
123 #define CMD_DAP_JTAG_CONFIGURE 0x15
124 #define CMD_DAP_JTAG_IDCODE 0x16
126 /* CMSIS-DAP Transfer Commands */
127 #define CMD_DAP_TFER_CONFIGURE 0x04
128 #define CMD_DAP_TFER 0x05
129 #define CMD_DAP_TFER_BLOCK 0x06
130 #define CMD_DAP_TFER_ABORT 0x07
132 /* DAP Status Code */
134 #define DAP_ERROR 0xFF
136 /* CMSIS-DAP Vendor Commands
139 static char *info_caps_str[] = {
144 /* max clock speed (kHz) */
145 #define DAP_MAX_CLOCK 5000
148 hid_device *dev_handle;
149 uint16_t packet_size;
150 uint16_t packet_count;
151 uint8_t *packet_buffer;
156 static struct cmsis_dap *cmsis_dap_handle;
158 static int cmsis_dap_usb_open(void)
160 hid_device *dev = NULL;
162 struct hid_device_info *devs, *cur_dev;
163 unsigned short target_vid, target_pid;
169 The CMSIS-DAP specification stipulates:
170 "The Product String must contain "CMSIS-DAP" somewhere in the string. This is used by the
171 debuggers to idenify a CMSIS-DAP compliant Debug Unit that is connected to a host computer."
173 devs = hid_enumerate(0x0, 0x0);
175 while (NULL != cur_dev) {
176 if (0 == cmsis_dap_vid[0]) {
177 if (NULL == cur_dev->product_string) {
178 LOG_DEBUG("Cannot read product string of device 0x%x:0x%x",
179 cur_dev->vendor_id, cur_dev->product_id);
181 if (wcsstr(cur_dev->product_string, L"CMSIS-DAP"))
183 if the user hasn't specified VID:PID *and*
184 product string contains "CMSIS-DAP", pick it
190 otherwise, exhaustively compare against all VID:PID in list
192 for (i = 0; cmsis_dap_vid[i] || cmsis_dap_pid[i]; i++) {
193 if ((cmsis_dap_vid[i] == cur_dev->vendor_id) && (cmsis_dap_pid[i] == cur_dev->product_id))
196 if (cmsis_dap_vid[i] || cmsis_dap_pid[i])
200 cur_dev = cur_dev->next;
203 if (NULL != cur_dev) {
204 target_vid = cur_dev->vendor_id;
205 target_pid = cur_dev->product_id;
208 hid_free_enumeration(devs);
210 if (hid_init() != 0) {
211 LOG_ERROR("unable to open HIDAPI");
215 dev = hid_open(target_vid, target_pid, NULL);
218 LOG_ERROR("unable to open CMSIS-DAP device");
222 struct cmsis_dap *dap = malloc(sizeof(struct cmsis_dap));
224 LOG_ERROR("unable to allocate memory");
228 dap->dev_handle = dev;
232 cmsis_dap_handle = dap;
234 /* allocate default packet buffer, may be changed later.
235 * currently with HIDAPI we have no way of getting the output report length
236 * without this info we cannot communicate with the adapter.
237 * For the moment we ahve to hard code the packet size */
239 int packet_size = PACKET_SIZE;
241 /* atmel cmsis-dap uses 512 byte reports */
242 if (target_vid == 0x03eb)
243 packet_size = 512 + 1;
245 cmsis_dap_handle->packet_buffer = malloc(packet_size);
246 cmsis_dap_handle->packet_size = packet_size;
248 if (cmsis_dap_handle->packet_buffer == NULL) {
249 LOG_ERROR("unable to allocate memory");
256 static void cmsis_dap_usb_close(struct cmsis_dap *dap)
258 hid_close(dap->dev_handle);
261 if (cmsis_dap_handle->packet_buffer)
262 free(cmsis_dap_handle->packet_buffer);
264 if (cmsis_dap_handle) {
265 free(cmsis_dap_handle);
266 cmsis_dap_handle = NULL;
272 /* Send a message and receive the reply */
273 static int cmsis_dap_usb_xfer(struct cmsis_dap *dap, int txlen)
275 /* Pad the rest of the TX buffer with 0's */
276 memset(dap->packet_buffer + txlen, 0, dap->packet_size - 1 - txlen);
278 /* write data to device */
279 int retval = hid_write(dap->dev_handle, dap->packet_buffer, dap->packet_size);
281 LOG_ERROR("error writing data: %ls", hid_error(dap->dev_handle));
286 retval = hid_read_timeout(dap->dev_handle, dap->packet_buffer, dap->packet_size, USB_TIMEOUT);
287 if (retval == -1 || retval == 0) {
288 LOG_DEBUG("error reading data: %ls", hid_error(dap->dev_handle));
295 static int cmsis_dap_cmd_DAP_SWJ_Pins(uint8_t pins, uint8_t mask, uint32_t delay, uint8_t *input)
298 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
300 buffer[0] = 0; /* report number */
301 buffer[1] = CMD_DAP_SWJ_PINS;
304 buffer[4] = delay & 0xff;
305 buffer[5] = (delay >> 8) & 0xff;
306 buffer[6] = (delay >> 16) & 0xff;
307 buffer[7] = (delay >> 24) & 0xff;
308 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 8);
310 if (retval != ERROR_OK) {
311 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_PINS failed.");
312 return ERROR_JTAG_DEVICE_ERROR;
321 static int cmsis_dap_cmd_DAP_SWJ_Clock(uint32_t swj_clock)
324 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
326 /* set clock in Hz */
328 buffer[0] = 0; /* report number */
329 buffer[1] = CMD_DAP_SWJ_CLOCK;
330 buffer[2] = swj_clock & 0xff;
331 buffer[3] = (swj_clock >> 8) & 0xff;
332 buffer[4] = (swj_clock >> 16) & 0xff;
333 buffer[5] = (swj_clock >> 24) & 0xff;
334 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 6);
336 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
337 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.");
338 return ERROR_JTAG_DEVICE_ERROR;
344 static int cmsis_dap_cmd_DAP_Info(uint8_t info, uint8_t **data)
347 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
349 buffer[0] = 0; /* report number */
350 buffer[1] = CMD_DAP_INFO;
352 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
354 if (retval != ERROR_OK) {
355 LOG_ERROR("CMSIS-DAP command CMD_INFO failed.");
356 return ERROR_JTAG_DEVICE_ERROR;
359 *data = &(buffer[1]);
364 static int cmsis_dap_cmd_DAP_LED(uint8_t leds)
367 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
369 buffer[0] = 0; /* report number */
370 buffer[1] = CMD_DAP_LED;
373 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 4);
375 if (retval != ERROR_OK || buffer[1] != 0x00) {
376 LOG_ERROR("CMSIS-DAP command CMD_LED failed.");
377 return ERROR_JTAG_DEVICE_ERROR;
383 static int cmsis_dap_cmd_DAP_Connect(uint8_t mode)
386 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
388 buffer[0] = 0; /* report number */
389 buffer[1] = CMD_DAP_CONNECT;
391 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
393 if (retval != ERROR_OK) {
394 LOG_ERROR("CMSIS-DAP command CMD_CONNECT failed.");
395 return ERROR_JTAG_DEVICE_ERROR;
398 if (buffer[1] != mode) {
399 LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode);
400 return ERROR_JTAG_DEVICE_ERROR;
406 static int cmsis_dap_cmd_DAP_Disconnect(void)
409 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
411 buffer[0] = 0; /* report number */
412 buffer[1] = CMD_DAP_DISCONNECT;
413 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 2);
415 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
416 LOG_ERROR("CMSIS-DAP command CMD_DISCONNECT failed.");
417 return ERROR_JTAG_DEVICE_ERROR;
423 static int cmsis_dap_cmd_DAP_TFER_Configure(uint8_t idle, uint16_t delay, uint16_t retry)
426 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
428 buffer[0] = 0; /* report number */
429 buffer[1] = CMD_DAP_TFER_CONFIGURE;
431 buffer[3] = delay & 0xff;
432 buffer[4] = (delay >> 8) & 0xff;
433 buffer[5] = retry & 0xff;
434 buffer[6] = (retry >> 8) & 0xff;
435 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
437 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
438 LOG_ERROR("CMSIS-DAP command CMD_TFER_Configure failed.");
439 return ERROR_JTAG_DEVICE_ERROR;
445 static int cmsis_dap_cmd_DAP_SWD_Configure(uint8_t cfg)
448 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
450 buffer[0] = 0; /* report number */
451 buffer[1] = CMD_DAP_SWD_CONFIGURE;
453 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
455 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
456 LOG_ERROR("CMSIS-DAP command CMD_SWD_Configure failed.");
457 return ERROR_JTAG_DEVICE_ERROR;
464 static int cmsis_dap_cmd_DAP_Delay(uint16_t delay_us)
467 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
469 buffer[0] = 0; /* report number */
470 buffer[1] = CMD_DAP_DELAY;
471 buffer[2] = delay_us & 0xff;
472 buffer[3] = (delay_us >> 8) & 0xff;
473 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 4);
475 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
476 LOG_ERROR("CMSIS-DAP command CMD_Delay failed.");
477 return ERROR_JTAG_DEVICE_ERROR;
484 static int queued_retval;
486 static void cmsis_dap_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t *value)
488 if (queued_retval != ERROR_OK)
491 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
495 DEBUG_IO("CMSIS-DAP: Read Reg 0x%02" PRIx8, cmd);
497 buffer[0] = 0; /* report number */
498 buffer[1] = CMD_DAP_TFER;
502 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
504 /* TODO - need better response checking */
505 if (retval != ERROR_OK || buffer[1] != 0x01) {
506 LOG_ERROR("CMSIS-DAP: Read Error (0x%02" PRIx8 ")", buffer[2]);
507 queued_retval = buffer[2];
511 val = le_to_h_u32(&buffer[3]);
512 DEBUG_IO("0x%08" PRIx32, val);
517 queued_retval = retval;
520 static void cmsis_dap_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t value)
522 if (queued_retval != ERROR_OK)
525 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
527 DEBUG_IO("CMSIS-DAP: Write Reg 0x%02" PRIx8 " 0x%08" PRIx32, cmd, value);
529 buffer[0] = 0; /* report number */
530 buffer[1] = CMD_DAP_TFER;
534 buffer[5] = (value) & 0xff;
535 buffer[6] = (value >> 8) & 0xff;
536 buffer[7] = (value >> 16) & 0xff;
537 buffer[8] = (value >> 24) & 0xff;
538 int retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 9);
540 if (buffer[1] != 0x01) {
541 LOG_ERROR("CMSIS-DAP: Write Error (0x%02" PRIx8 ")", buffer[2]);
545 queued_retval = retval;
548 static int cmsis_dap_swd_run(struct adiv5_dap *dap)
550 int retval = queued_retval;
551 queued_retval = ERROR_OK;
555 static int cmsis_dap_get_version_info(void)
559 /* INFO_ID_FW_VER - string */
560 int retval = cmsis_dap_cmd_DAP_Info(INFO_ID_FW_VER, &data);
561 if (retval != ERROR_OK)
564 if (data[0]) /* strlen */
565 LOG_INFO("CMSIS-DAP: FW Version = %s", &data[1]);
570 static int cmsis_dap_get_caps_info(void)
574 /* INFO_ID_CAPS - byte */
575 int retval = cmsis_dap_cmd_DAP_Info(INFO_ID_CAPS, &data);
576 if (retval != ERROR_OK)
580 uint8_t caps = data[1];
582 cmsis_dap_handle->caps = caps;
584 if (caps & INFO_CAPS_SWD)
585 LOG_INFO("CMSIS-DAP: %s", info_caps_str[0]);
586 if (caps & INFO_CAPS_JTAG)
587 LOG_INFO("CMSIS-DAP: %s", info_caps_str[1]);
593 static int cmsis_dap_get_status(void)
597 int retval = cmsis_dap_cmd_DAP_SWJ_Pins(0, 0, 0, &d);
599 if (retval == ERROR_OK) {
600 LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d",
601 (d & (0x01 << 0)) ? 1 : 0, /* Bit 0: SWCLK/TCK */
602 (d & (0x01 << 1)) ? 1 : 0, /* Bit 1: SWDIO/TMS */
603 (d & (0x01 << 2)) ? 1 : 0, /* Bit 2: TDI */
604 (d & (0x01 << 3)) ? 1 : 0, /* Bit 3: TDO */
605 (d & (0x01 << 5)) ? 1 : 0, /* Bit 5: nTRST */
606 (d & (0x01 << 7)) ? 1 : 0); /* Bit 7: nRESET */
612 static int cmsis_dap_reset_link(void)
614 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
616 LOG_DEBUG("CMSIS-DAP: cmsis_dap_reset_link");
617 LOG_INFO("DAP_SWJ Sequence (reset: 50+ '1' followed by 0)");
619 /* reset line with SWDIO high for >50 cycles */
620 buffer[0] = 0; /* report number */
621 buffer[1] = CMD_DAP_SWJ_SEQ;
630 int retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 10);
632 if (retval != ERROR_OK || buffer[1] != DAP_OK)
635 /* 16bit JTAG-SWD sequence */
636 buffer[0] = 0; /* report number */
637 buffer[1] = CMD_DAP_SWJ_SEQ;
641 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
643 if (retval != ERROR_OK || buffer[1] != DAP_OK)
646 /* another reset just incase */
647 buffer[0] = 0; /* report number */
648 buffer[1] = CMD_DAP_SWJ_SEQ;
657 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 10);
659 if (retval != ERROR_OK || buffer[1] != DAP_OK)
662 /* 16 cycle idle period */
663 buffer[0] = 0; /* report number */
664 buffer[1] = CMD_DAP_SWJ_SEQ;
668 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
670 if (retval != ERROR_OK || buffer[1] != DAP_OK)
673 DEBUG_IO("DAP Read IDCODE");
675 /* read the id code is always the next sequence */
676 buffer[0] = 0; /* report number */
677 buffer[1] = CMD_DAP_TFER;
681 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
683 if (retval != ERROR_OK)
686 if (buffer[1] == 0) {
687 LOG_DEBUG("Result 0x%02" PRIx8 " 0x%02" PRIx8, buffer[1], buffer[2]);
689 LOG_DEBUG("DAP Reset Target");
690 buffer[0] = 0; /* report number */
691 buffer[1] = CMD_DAP_RESET_TARGET;
692 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 2);
693 LOG_DEBUG("Result 0x%02" PRIx8 " 0x%02" PRIx8, buffer[1], buffer[2]);
695 LOG_DEBUG("DAP Write Abort");
696 buffer[0] = 0; /* report number */
697 buffer[1] = CMD_DAP_WRITE_ABORT;
699 buffer[3] = 0x1e/*0x1f*/;
703 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
704 LOG_DEBUG("Result 0x%02" PRIx8, buffer[1]);
706 return 0x80 + buffer[1];
709 LOG_DEBUG("DAP Write Abort");
710 buffer[0] = 0; /* report number */
711 buffer[1] = CMD_DAP_WRITE_ABORT;
717 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
718 LOG_DEBUG("Result 0x%02" PRIx8, buffer[1]);
723 static int cmsis_dap_init(void)
728 if (cmsis_dap_handle == NULL) {
731 retval = cmsis_dap_usb_open();
732 if (retval != ERROR_OK)
735 retval = cmsis_dap_get_caps_info();
736 if (retval != ERROR_OK)
739 /* Connect in JTAG mode */
740 if (!(cmsis_dap_handle->caps & INFO_CAPS_JTAG)) {
741 LOG_ERROR("CMSIS-DAP: JTAG not supported");
742 return ERROR_JTAG_DEVICE_ERROR;
745 retval = cmsis_dap_cmd_DAP_Connect(CONNECT_JTAG);
746 if (retval != ERROR_OK)
749 LOG_INFO("CMSIS-DAP: Interface Initialised (JTAG)");
752 retval = cmsis_dap_get_version_info();
753 if (retval != ERROR_OK)
756 /* INFO_ID_PKT_SZ - short */
757 retval = cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_SZ, &data);
758 if (retval != ERROR_OK)
761 if (data[0] == 2) { /* short */
762 uint16_t pkt_sz = data[1] + (data[2] << 8);
764 if (cmsis_dap_handle->packet_size != pkt_sz + 1) {
765 /* reallocate buffer */
766 cmsis_dap_handle->packet_size = pkt_sz + 1;
767 cmsis_dap_handle->packet_buffer = realloc(cmsis_dap_handle->packet_buffer,
768 cmsis_dap_handle->packet_size);
769 if (cmsis_dap_handle->packet_buffer == NULL) {
770 LOG_ERROR("unable to reallocate memory");
775 LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRId16, pkt_sz);
778 /* INFO_ID_PKT_CNT - byte */
779 retval = cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_CNT, &data);
780 if (retval != ERROR_OK)
783 if (data[0] == 1) { /* byte */
784 uint16_t pkt_cnt = data[1];
785 cmsis_dap_handle->packet_count = pkt_cnt;
786 LOG_DEBUG("CMSIS-DAP: Packet Count = %" PRId16, pkt_cnt);
789 retval = cmsis_dap_get_status();
790 if (retval != ERROR_OK)
793 /* Now try to connect to the target
794 * TODO: This is all SWD only @ present */
795 retval = cmsis_dap_cmd_DAP_SWJ_Clock(100); /* 100kHz */
796 if (retval != ERROR_OK)
799 retval = cmsis_dap_cmd_DAP_TFER_Configure(0, 64, 0);
800 if (retval != ERROR_OK)
802 retval = cmsis_dap_cmd_DAP_SWD_Configure(0x00);
803 if (retval != ERROR_OK)
806 retval = cmsis_dap_cmd_DAP_LED(0x03); /* Both LEDs on */
807 if (retval != ERROR_OK)
810 /* support connecting with srst asserted */
811 enum reset_types jtag_reset_config = jtag_get_reset_config();
813 if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
814 if (jtag_reset_config & RESET_SRST_NO_GATING) {
815 retval = cmsis_dap_cmd_DAP_SWJ_Pins(0, (1 << 7), 0, NULL);
816 if (retval != ERROR_OK)
818 LOG_INFO("Connecting under reset");
822 retval = cmsis_dap_reset_link();
823 if (retval != ERROR_OK)
826 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
828 LOG_INFO("CMSIS-DAP: Interface ready");
833 static int cmsis_dap_swd_init(void)
837 DEBUG_IO("CMSIS-DAP: cmsis_dap_swd_init");
839 if (cmsis_dap_handle == NULL) {
842 retval = cmsis_dap_usb_open();
843 if (retval != ERROR_OK)
846 retval = cmsis_dap_get_caps_info();
847 if (retval != ERROR_OK)
851 if (!(cmsis_dap_handle->caps & INFO_CAPS_SWD)) {
852 LOG_ERROR("CMSIS-DAP: SWD not supported");
853 return ERROR_JTAG_DEVICE_ERROR;
856 retval = cmsis_dap_cmd_DAP_Connect(CONNECT_SWD);
857 if (retval != ERROR_OK)
860 /* Add more setup here.??... */
862 LOG_INFO("CMSIS-DAP: Interface Initialised (SWD)");
866 static int cmsis_dap_quit(void)
868 cmsis_dap_cmd_DAP_Disconnect();
869 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
871 cmsis_dap_usb_close(cmsis_dap_handle);
876 static void cmsis_dap_execute_reset(struct jtag_command *cmd)
878 int retval = cmsis_dap_cmd_DAP_SWJ_Pins(cmd->cmd.reset->srst ? 0 : (1 << 7), \
880 if (retval != ERROR_OK)
881 LOG_ERROR("CMSIS-DAP: Interface reset failed");
884 static void cmsis_dap_execute_sleep(struct jtag_command *cmd)
887 int retval = cmsis_dap_cmd_DAP_Delay(cmd->cmd.sleep->us);
888 if (retval != ERROR_OK)
890 jtag_sleep(cmd->cmd.sleep->us);
893 static void cmsis_dap_execute_command(struct jtag_command *cmd)
897 cmsis_dap_execute_reset(cmd);
900 cmsis_dap_execute_sleep(cmd);
903 LOG_ERROR("BUG: unknown JTAG command type encountered");
908 static int cmsis_dap_execute_queue(void)
910 struct jtag_command *cmd = jtag_command_queue;
912 while (cmd != NULL) {
913 cmsis_dap_execute_command(cmd);
920 static int cmsis_dap_speed(int speed)
922 if (speed > DAP_MAX_CLOCK) {
923 LOG_INFO("reduce speed request: %dkHz to %dkHz maximum", speed, DAP_MAX_CLOCK);
924 speed = DAP_MAX_CLOCK;
928 LOG_INFO("RTCK not supported");
929 return ERROR_JTAG_NOT_IMPLEMENTED;
932 return cmsis_dap_cmd_DAP_SWJ_Clock(speed);
935 static int cmsis_dap_speed_div(int speed, int *khz)
941 static int cmsis_dap_khz(int khz, int *jtag_speed)
947 COMMAND_HANDLER(cmsis_dap_handle_info_command)
949 if (cmsis_dap_get_version_info() == ERROR_OK)
950 cmsis_dap_get_status();
955 COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command)
957 if (CMD_ARGC > MAX_USB_IDS * 2) {
958 LOG_WARNING("ignoring extra IDs in cmsis_dap_vid_pid "
959 "(maximum is %d pairs)", MAX_USB_IDS);
960 CMD_ARGC = MAX_USB_IDS * 2;
962 if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
963 LOG_WARNING("incomplete cmsis_dap_vid_pid configuration directive");
965 return ERROR_COMMAND_SYNTAX_ERROR;
966 /* remove the incomplete trailing id */
971 for (i = 0; i < CMD_ARGC; i += 2) {
972 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], cmsis_dap_vid[i >> 1]);
973 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], cmsis_dap_pid[i >> 1]);
977 * Explicitly terminate, in case there are multiples instances of
980 cmsis_dap_vid[i >> 1] = cmsis_dap_pid[i >> 1] = 0;
985 static const struct command_registration cmsis_dap_subcommand_handlers[] = {
988 .handler = &cmsis_dap_handle_info_command,
989 .mode = COMMAND_EXEC,
991 .help = "show cmsis-dap info",
993 COMMAND_REGISTRATION_DONE
996 static const struct command_registration cmsis_dap_command_handlers[] = {
1000 .help = "perform CMSIS-DAP management",
1002 .chain = cmsis_dap_subcommand_handlers,
1005 .name = "cmsis_dap_vid_pid",
1006 .handler = &cmsis_dap_handle_vid_pid_command,
1007 .mode = COMMAND_CONFIG,
1008 .help = "the vendor ID and product ID of the CMSIS-DAP device",
1009 .usage = "(vid pid)* ",
1011 COMMAND_REGISTRATION_DONE
1014 static const struct swd_driver cmsis_dap_swd_driver = {
1015 .init = cmsis_dap_swd_init,
1016 .read_reg = cmsis_dap_swd_read_reg,
1017 .write_reg = cmsis_dap_swd_write_reg,
1018 .run = cmsis_dap_swd_run,
1021 const char *cmsis_dap_transport[] = {"cmsis-dap", NULL};
1023 struct jtag_interface cmsis_dap_interface = {
1024 .name = "cmsis-dap",
1025 .commands = cmsis_dap_command_handlers,
1026 .swd = &cmsis_dap_swd_driver,
1027 .transports = cmsis_dap_transport,
1029 .execute_queue = cmsis_dap_execute_queue,
1030 .speed = cmsis_dap_speed,
1031 .speed_div = cmsis_dap_speed_div,
1032 .khz = cmsis_dap_khz,
1033 .init = cmsis_dap_init,
1034 .quit = cmsis_dap_quit,