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 };
63 static wchar_t *cmsis_dap_serial;
66 #define PACKET_SIZE (64 + 1) /* 64 bytes plus report id */
67 #define USB_TIMEOUT 1000
69 /* CMSIS-DAP General Commands */
70 #define CMD_DAP_INFO 0x00
71 #define CMD_DAP_LED 0x01
72 #define CMD_DAP_CONNECT 0x02
73 #define CMD_DAP_DISCONNECT 0x03
74 #define CMD_DAP_WRITE_ABORT 0x08
75 #define CMD_DAP_DELAY 0x09
76 #define CMD_DAP_RESET_TARGET 0x0A
79 #define INFO_ID_VID 0x00 /* string */
80 #define INFO_ID_PID 0x02 /* string */
81 #define INFO_ID_SERNUM 0x03 /* string */
82 #define INFO_ID_FW_VER 0x04 /* string */
83 #define INFO_ID_TD_VEND 0x05 /* string */
84 #define INFO_ID_TD_NAME 0x06 /* string */
85 #define INFO_ID_CAPS 0xf0 /* byte */
86 #define INFO_ID_PKT_CNT 0xfe /* byte */
87 #define INFO_ID_PKT_SZ 0xff /* short */
89 #define INFO_CAPS_SWD 0x01
90 #define INFO_CAPS_JTAG 0x02
93 #define LED_ID_CONNECT 0x00
94 #define LED_ID_RUN 0x01
100 #define CONNECT_DEFAULT 0x00
101 #define CONNECT_SWD 0x01
102 #define CONNECT_JTAG 0x02
104 /* CMSIS-DAP Common SWD/JTAG Commands */
105 #define CMD_DAP_DELAY 0x09
106 #define CMD_DAP_SWJ_PINS 0x10
107 #define CMD_DAP_SWJ_CLOCK 0x11
108 #define CMD_DAP_SWJ_SEQ 0x12
120 /* CMSIS-DAP SWD Commands */
121 #define CMD_DAP_SWD_CONFIGURE 0x13
123 /* CMSIS-DAP JTAG Commands */
124 #define CMD_DAP_JTAG_SEQ 0x14
125 #define CMD_DAP_JTAG_CONFIGURE 0x15
126 #define CMD_DAP_JTAG_IDCODE 0x16
128 /* CMSIS-DAP Transfer Commands */
129 #define CMD_DAP_TFER_CONFIGURE 0x04
130 #define CMD_DAP_TFER 0x05
131 #define CMD_DAP_TFER_BLOCK 0x06
132 #define CMD_DAP_TFER_ABORT 0x07
134 /* DAP Status Code */
136 #define DAP_ERROR 0xFF
138 /* CMSIS-DAP Vendor Commands
141 static const char * const info_caps_str[] = {
146 /* max clock speed (kHz) */
147 #define DAP_MAX_CLOCK 5000
150 hid_device *dev_handle;
151 uint16_t packet_size;
152 uint16_t packet_count;
153 uint8_t *packet_buffer;
158 static struct cmsis_dap *cmsis_dap_handle;
160 static int cmsis_dap_usb_open(void)
162 hid_device *dev = NULL;
164 struct hid_device_info *devs, *cur_dev;
165 unsigned short target_vid, target_pid;
173 * The CMSIS-DAP specification stipulates:
174 * "The Product String must contain "CMSIS-DAP" somewhere in the string. This is used by the
175 * debuggers to identify a CMSIS-DAP compliant Debug Unit that is connected to a host computer."
177 devs = hid_enumerate(0x0, 0x0);
179 while (NULL != cur_dev) {
180 if (0 == cmsis_dap_vid[0]) {
181 if (NULL == cur_dev->product_string) {
182 LOG_DEBUG("Cannot read product string of device 0x%x:0x%x",
183 cur_dev->vendor_id, cur_dev->product_id);
185 if (wcsstr(cur_dev->product_string, L"CMSIS-DAP")) {
186 /* if the user hasn't specified VID:PID *and*
187 * product string contains "CMSIS-DAP", pick it
193 /* otherwise, exhaustively compare against all VID:PID in list */
194 for (i = 0; cmsis_dap_vid[i] || cmsis_dap_pid[i]; i++) {
195 if ((cmsis_dap_vid[i] == cur_dev->vendor_id) && (cmsis_dap_pid[i] == cur_dev->product_id))
199 if (cmsis_dap_vid[i] || cmsis_dap_pid[i])
204 /* we have found an adapter, so exit further checks */
205 /* check serial number matches if given */
206 if (cmsis_dap_serial != NULL) {
207 if (wcscmp(cmsis_dap_serial, cur_dev->serial_number) == 0)
213 cur_dev = cur_dev->next;
216 if (NULL != cur_dev) {
217 target_vid = cur_dev->vendor_id;
218 target_pid = cur_dev->product_id;
221 hid_free_enumeration(devs);
223 if (target_vid == 0 && target_pid == 0) {
224 LOG_ERROR("unable to find CMSIS-DAP device");
228 if (hid_init() != 0) {
229 LOG_ERROR("unable to open HIDAPI");
233 dev = hid_open(target_vid, target_pid, NULL);
236 LOG_ERROR("unable to open CMSIS-DAP device");
240 struct cmsis_dap *dap = malloc(sizeof(struct cmsis_dap));
242 LOG_ERROR("unable to allocate memory");
246 dap->dev_handle = dev;
250 cmsis_dap_handle = dap;
252 /* allocate default packet buffer, may be changed later.
253 * currently with HIDAPI we have no way of getting the output report length
254 * without this info we cannot communicate with the adapter.
255 * For the moment we ahve to hard code the packet size */
257 int packet_size = PACKET_SIZE;
259 /* atmel cmsis-dap uses 512 byte reports */
260 if (target_vid == 0x03eb)
261 packet_size = 512 + 1;
263 cmsis_dap_handle->packet_buffer = malloc(packet_size);
264 cmsis_dap_handle->packet_size = packet_size;
266 if (cmsis_dap_handle->packet_buffer == NULL) {
267 LOG_ERROR("unable to allocate memory");
274 static void cmsis_dap_usb_close(struct cmsis_dap *dap)
276 hid_close(dap->dev_handle);
279 if (cmsis_dap_handle->packet_buffer)
280 free(cmsis_dap_handle->packet_buffer);
282 if (cmsis_dap_handle) {
283 free(cmsis_dap_handle);
284 cmsis_dap_handle = NULL;
287 if (cmsis_dap_serial) {
288 free(cmsis_dap_serial);
289 cmsis_dap_serial = NULL;
295 /* Send a message and receive the reply */
296 static int cmsis_dap_usb_xfer(struct cmsis_dap *dap, int txlen)
298 /* Pad the rest of the TX buffer with 0's */
299 memset(dap->packet_buffer + txlen, 0, dap->packet_size - 1 - txlen);
301 /* write data to device */
302 int retval = hid_write(dap->dev_handle, dap->packet_buffer, dap->packet_size);
304 LOG_ERROR("error writing data: %ls", hid_error(dap->dev_handle));
309 retval = hid_read_timeout(dap->dev_handle, dap->packet_buffer, dap->packet_size, USB_TIMEOUT);
310 if (retval == -1 || retval == 0) {
311 LOG_DEBUG("error reading data: %ls", hid_error(dap->dev_handle));
318 static int cmsis_dap_cmd_DAP_SWJ_Pins(uint8_t pins, uint8_t mask, uint32_t delay, uint8_t *input)
321 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
323 buffer[0] = 0; /* report number */
324 buffer[1] = CMD_DAP_SWJ_PINS;
327 buffer[4] = delay & 0xff;
328 buffer[5] = (delay >> 8) & 0xff;
329 buffer[6] = (delay >> 16) & 0xff;
330 buffer[7] = (delay >> 24) & 0xff;
331 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 8);
333 if (retval != ERROR_OK) {
334 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_PINS failed.");
335 return ERROR_JTAG_DEVICE_ERROR;
344 static int cmsis_dap_cmd_DAP_SWJ_Clock(uint32_t swj_clock)
347 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
349 /* set clock in Hz */
351 buffer[0] = 0; /* report number */
352 buffer[1] = CMD_DAP_SWJ_CLOCK;
353 buffer[2] = swj_clock & 0xff;
354 buffer[3] = (swj_clock >> 8) & 0xff;
355 buffer[4] = (swj_clock >> 16) & 0xff;
356 buffer[5] = (swj_clock >> 24) & 0xff;
357 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 6);
359 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
360 LOG_ERROR("CMSIS-DAP command CMD_DAP_SWJ_CLOCK failed.");
361 return ERROR_JTAG_DEVICE_ERROR;
367 static int cmsis_dap_cmd_DAP_Info(uint8_t info, uint8_t **data)
370 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
372 buffer[0] = 0; /* report number */
373 buffer[1] = CMD_DAP_INFO;
375 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
377 if (retval != ERROR_OK) {
378 LOG_ERROR("CMSIS-DAP command CMD_INFO failed.");
379 return ERROR_JTAG_DEVICE_ERROR;
382 *data = &(buffer[1]);
387 static int cmsis_dap_cmd_DAP_LED(uint8_t leds)
390 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
392 buffer[0] = 0; /* report number */
393 buffer[1] = CMD_DAP_LED;
396 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 4);
398 if (retval != ERROR_OK || buffer[1] != 0x00) {
399 LOG_ERROR("CMSIS-DAP command CMD_LED failed.");
400 return ERROR_JTAG_DEVICE_ERROR;
406 static int cmsis_dap_cmd_DAP_Connect(uint8_t mode)
409 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
411 buffer[0] = 0; /* report number */
412 buffer[1] = CMD_DAP_CONNECT;
414 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
416 if (retval != ERROR_OK) {
417 LOG_ERROR("CMSIS-DAP command CMD_CONNECT failed.");
418 return ERROR_JTAG_DEVICE_ERROR;
421 if (buffer[1] != mode) {
422 LOG_ERROR("CMSIS-DAP failed to connect in mode (%d)", mode);
423 return ERROR_JTAG_DEVICE_ERROR;
429 static int cmsis_dap_cmd_DAP_Disconnect(void)
432 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
434 buffer[0] = 0; /* report number */
435 buffer[1] = CMD_DAP_DISCONNECT;
436 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 2);
438 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
439 LOG_ERROR("CMSIS-DAP command CMD_DISCONNECT failed.");
440 return ERROR_JTAG_DEVICE_ERROR;
446 static int cmsis_dap_cmd_DAP_TFER_Configure(uint8_t idle, uint16_t delay, uint16_t retry)
449 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
451 buffer[0] = 0; /* report number */
452 buffer[1] = CMD_DAP_TFER_CONFIGURE;
454 buffer[3] = delay & 0xff;
455 buffer[4] = (delay >> 8) & 0xff;
456 buffer[5] = retry & 0xff;
457 buffer[6] = (retry >> 8) & 0xff;
458 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
460 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
461 LOG_ERROR("CMSIS-DAP command CMD_TFER_Configure failed.");
462 return ERROR_JTAG_DEVICE_ERROR;
468 static int cmsis_dap_cmd_DAP_SWD_Configure(uint8_t cfg)
471 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
473 buffer[0] = 0; /* report number */
474 buffer[1] = CMD_DAP_SWD_CONFIGURE;
476 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 3);
478 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
479 LOG_ERROR("CMSIS-DAP command CMD_SWD_Configure failed.");
480 return ERROR_JTAG_DEVICE_ERROR;
487 static int cmsis_dap_cmd_DAP_Delay(uint16_t delay_us)
490 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
492 buffer[0] = 0; /* report number */
493 buffer[1] = CMD_DAP_DELAY;
494 buffer[2] = delay_us & 0xff;
495 buffer[3] = (delay_us >> 8) & 0xff;
496 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 4);
498 if (retval != ERROR_OK || buffer[1] != DAP_OK) {
499 LOG_ERROR("CMSIS-DAP command CMD_Delay failed.");
500 return ERROR_JTAG_DEVICE_ERROR;
507 static int queued_retval;
509 static void cmsis_dap_swd_read_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t *value)
511 if (queued_retval != ERROR_OK)
514 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
518 DEBUG_IO("CMSIS-DAP: Read Reg 0x%02" PRIx8, cmd);
520 buffer[0] = 0; /* report number */
521 buffer[1] = CMD_DAP_TFER;
525 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
527 /* TODO - need better response checking */
528 if (retval != ERROR_OK || buffer[1] != 0x01) {
529 LOG_ERROR("CMSIS-DAP: Read Error (0x%02" PRIx8 ")", buffer[2]);
530 queued_retval = buffer[2];
534 val = le_to_h_u32(&buffer[3]);
535 DEBUG_IO("0x%08" PRIx32, val);
540 queued_retval = retval;
543 static void cmsis_dap_swd_write_reg(struct adiv5_dap *dap, uint8_t cmd, uint32_t value)
545 if (queued_retval != ERROR_OK)
548 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
550 DEBUG_IO("CMSIS-DAP: Write Reg 0x%02" PRIx8 " 0x%08" PRIx32, cmd, value);
552 buffer[0] = 0; /* report number */
553 buffer[1] = CMD_DAP_TFER;
557 buffer[5] = (value) & 0xff;
558 buffer[6] = (value >> 8) & 0xff;
559 buffer[7] = (value >> 16) & 0xff;
560 buffer[8] = (value >> 24) & 0xff;
561 int retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 9);
563 if (buffer[1] != 0x01) {
564 LOG_ERROR("CMSIS-DAP: Write Error (0x%02" PRIx8 ")", buffer[2]);
568 queued_retval = retval;
571 static int cmsis_dap_swd_run(struct adiv5_dap *dap)
573 int retval = queued_retval;
574 queued_retval = ERROR_OK;
578 static int cmsis_dap_get_version_info(void)
582 /* INFO_ID_FW_VER - string */
583 int retval = cmsis_dap_cmd_DAP_Info(INFO_ID_FW_VER, &data);
584 if (retval != ERROR_OK)
587 if (data[0]) /* strlen */
588 LOG_INFO("CMSIS-DAP: FW Version = %s", &data[1]);
593 static int cmsis_dap_get_caps_info(void)
597 /* INFO_ID_CAPS - byte */
598 int retval = cmsis_dap_cmd_DAP_Info(INFO_ID_CAPS, &data);
599 if (retval != ERROR_OK)
603 uint8_t caps = data[1];
605 cmsis_dap_handle->caps = caps;
607 if (caps & INFO_CAPS_SWD)
608 LOG_INFO("CMSIS-DAP: %s", info_caps_str[0]);
609 if (caps & INFO_CAPS_JTAG)
610 LOG_INFO("CMSIS-DAP: %s", info_caps_str[1]);
616 static int cmsis_dap_get_status(void)
620 int retval = cmsis_dap_cmd_DAP_SWJ_Pins(0, 0, 0, &d);
622 if (retval == ERROR_OK) {
623 LOG_INFO("SWCLK/TCK = %d SWDIO/TMS = %d TDI = %d TDO = %d nTRST = %d nRESET = %d",
624 (d & (0x01 << 0)) ? 1 : 0, /* Bit 0: SWCLK/TCK */
625 (d & (0x01 << 1)) ? 1 : 0, /* Bit 1: SWDIO/TMS */
626 (d & (0x01 << 2)) ? 1 : 0, /* Bit 2: TDI */
627 (d & (0x01 << 3)) ? 1 : 0, /* Bit 3: TDO */
628 (d & (0x01 << 5)) ? 1 : 0, /* Bit 5: nTRST */
629 (d & (0x01 << 7)) ? 1 : 0); /* Bit 7: nRESET */
635 static int cmsis_dap_reset_link(void)
637 uint8_t *buffer = cmsis_dap_handle->packet_buffer;
639 LOG_DEBUG("CMSIS-DAP: cmsis_dap_reset_link");
640 LOG_INFO("DAP_SWJ Sequence (reset: 50+ '1' followed by 0)");
642 /* reset line with SWDIO high for >50 cycles */
643 buffer[0] = 0; /* report number */
644 buffer[1] = CMD_DAP_SWJ_SEQ;
653 int retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 10);
655 if (retval != ERROR_OK || buffer[1] != DAP_OK)
658 /* 16bit JTAG-SWD sequence */
659 buffer[0] = 0; /* report number */
660 buffer[1] = CMD_DAP_SWJ_SEQ;
664 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
666 if (retval != ERROR_OK || buffer[1] != DAP_OK)
669 /* another reset just incase */
670 buffer[0] = 0; /* report number */
671 buffer[1] = CMD_DAP_SWJ_SEQ;
680 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 10);
682 if (retval != ERROR_OK || buffer[1] != DAP_OK)
685 /* 16 cycle idle period */
686 buffer[0] = 0; /* report number */
687 buffer[1] = CMD_DAP_SWJ_SEQ;
691 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
693 if (retval != ERROR_OK || buffer[1] != DAP_OK)
696 DEBUG_IO("DAP Read IDCODE");
698 /* read the id code is always the next sequence */
699 buffer[0] = 0; /* report number */
700 buffer[1] = CMD_DAP_TFER;
704 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 5);
706 if (retval != ERROR_OK)
709 if (buffer[1] == 0) {
710 LOG_DEBUG("Result 0x%02" PRIx8 " 0x%02" PRIx8, buffer[1], buffer[2]);
712 LOG_DEBUG("DAP Reset Target");
713 buffer[0] = 0; /* report number */
714 buffer[1] = CMD_DAP_RESET_TARGET;
715 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 2);
716 LOG_DEBUG("Result 0x%02" PRIx8 " 0x%02" PRIx8, buffer[1], buffer[2]);
718 LOG_DEBUG("DAP Write Abort");
719 buffer[0] = 0; /* report number */
720 buffer[1] = CMD_DAP_WRITE_ABORT;
722 buffer[3] = 0x1e/*0x1f*/;
726 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
727 LOG_DEBUG("Result 0x%02" PRIx8, buffer[1]);
729 return 0x80 + buffer[1];
732 LOG_DEBUG("DAP Write Abort");
733 buffer[0] = 0; /* report number */
734 buffer[1] = CMD_DAP_WRITE_ABORT;
740 retval = cmsis_dap_usb_xfer(cmsis_dap_handle, 7);
741 LOG_DEBUG("Result 0x%02" PRIx8, buffer[1]);
746 static int cmsis_dap_swd_open(void)
750 DEBUG_IO("CMSIS-DAP: cmsis_dap_swd_open");
752 if (cmsis_dap_handle == NULL) {
755 retval = cmsis_dap_usb_open();
756 if (retval != ERROR_OK)
759 retval = cmsis_dap_get_caps_info();
760 if (retval != ERROR_OK)
764 if (!(cmsis_dap_handle->caps & INFO_CAPS_SWD)) {
765 LOG_ERROR("CMSIS-DAP: SWD not supported");
766 return ERROR_JTAG_DEVICE_ERROR;
769 retval = cmsis_dap_cmd_DAP_Connect(CONNECT_SWD);
770 if (retval != ERROR_OK)
773 /* Add more setup here.??... */
775 LOG_INFO("CMSIS-DAP: Interface Initialised (SWD)");
779 static int cmsis_dap_init(void)
785 retval = cmsis_dap_swd_open();
786 if (retval != ERROR_OK)
790 if (cmsis_dap_handle == NULL) {
793 retval = cmsis_dap_usb_open();
794 if (retval != ERROR_OK)
797 retval = cmsis_dap_get_caps_info();
798 if (retval != ERROR_OK)
801 /* Connect in JTAG mode */
802 if (!(cmsis_dap_handle->caps & INFO_CAPS_JTAG)) {
803 LOG_ERROR("CMSIS-DAP: JTAG not supported");
804 return ERROR_JTAG_DEVICE_ERROR;
807 retval = cmsis_dap_cmd_DAP_Connect(CONNECT_JTAG);
808 if (retval != ERROR_OK)
811 LOG_INFO("CMSIS-DAP: Interface Initialised (JTAG)");
814 retval = cmsis_dap_get_version_info();
815 if (retval != ERROR_OK)
818 /* INFO_ID_PKT_SZ - short */
819 retval = cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_SZ, &data);
820 if (retval != ERROR_OK)
823 if (data[0] == 2) { /* short */
824 uint16_t pkt_sz = data[1] + (data[2] << 8);
826 if (cmsis_dap_handle->packet_size != pkt_sz + 1) {
827 /* reallocate buffer */
828 cmsis_dap_handle->packet_size = pkt_sz + 1;
829 cmsis_dap_handle->packet_buffer = realloc(cmsis_dap_handle->packet_buffer,
830 cmsis_dap_handle->packet_size);
831 if (cmsis_dap_handle->packet_buffer == NULL) {
832 LOG_ERROR("unable to reallocate memory");
837 LOG_DEBUG("CMSIS-DAP: Packet Size = %" PRId16, pkt_sz);
840 /* INFO_ID_PKT_CNT - byte */
841 retval = cmsis_dap_cmd_DAP_Info(INFO_ID_PKT_CNT, &data);
842 if (retval != ERROR_OK)
845 if (data[0] == 1) { /* byte */
846 uint16_t pkt_cnt = data[1];
847 cmsis_dap_handle->packet_count = pkt_cnt;
848 LOG_DEBUG("CMSIS-DAP: Packet Count = %" PRId16, pkt_cnt);
851 retval = cmsis_dap_get_status();
852 if (retval != ERROR_OK)
855 /* Now try to connect to the target
856 * TODO: This is all SWD only @ present */
857 retval = cmsis_dap_cmd_DAP_SWJ_Clock(100); /* 100kHz */
858 if (retval != ERROR_OK)
861 retval = cmsis_dap_cmd_DAP_TFER_Configure(0, 64, 0);
862 if (retval != ERROR_OK)
864 retval = cmsis_dap_cmd_DAP_SWD_Configure(0x00);
865 if (retval != ERROR_OK)
868 retval = cmsis_dap_cmd_DAP_LED(0x03); /* Both LEDs on */
869 if (retval != ERROR_OK)
872 /* support connecting with srst asserted */
873 enum reset_types jtag_reset_config = jtag_get_reset_config();
875 if (jtag_reset_config & RESET_CNCT_UNDER_SRST) {
876 if (jtag_reset_config & RESET_SRST_NO_GATING) {
877 retval = cmsis_dap_cmd_DAP_SWJ_Pins(0, (1 << 7), 0, NULL);
878 if (retval != ERROR_OK)
880 LOG_INFO("Connecting under reset");
884 retval = cmsis_dap_reset_link();
885 if (retval != ERROR_OK)
888 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
890 LOG_INFO("CMSIS-DAP: Interface ready");
895 static int cmsis_dap_swd_init(void)
901 static int cmsis_dap_quit(void)
903 cmsis_dap_cmd_DAP_Disconnect();
904 cmsis_dap_cmd_DAP_LED(0x00); /* Both LEDs off */
906 cmsis_dap_usb_close(cmsis_dap_handle);
911 static void cmsis_dap_execute_reset(struct jtag_command *cmd)
913 int retval = cmsis_dap_cmd_DAP_SWJ_Pins(cmd->cmd.reset->srst ? 0 : (1 << 7), \
915 if (retval != ERROR_OK)
916 LOG_ERROR("CMSIS-DAP: Interface reset failed");
919 static void cmsis_dap_execute_sleep(struct jtag_command *cmd)
922 int retval = cmsis_dap_cmd_DAP_Delay(cmd->cmd.sleep->us);
923 if (retval != ERROR_OK)
925 jtag_sleep(cmd->cmd.sleep->us);
928 static void cmsis_dap_execute_command(struct jtag_command *cmd)
932 cmsis_dap_execute_reset(cmd);
935 cmsis_dap_execute_sleep(cmd);
938 LOG_ERROR("BUG: unknown JTAG command type encountered");
943 static int cmsis_dap_execute_queue(void)
945 struct jtag_command *cmd = jtag_command_queue;
947 while (cmd != NULL) {
948 cmsis_dap_execute_command(cmd);
955 static int cmsis_dap_speed(int speed)
957 if (speed > DAP_MAX_CLOCK) {
958 LOG_INFO("reduce speed request: %dkHz to %dkHz maximum", speed, DAP_MAX_CLOCK);
959 speed = DAP_MAX_CLOCK;
963 LOG_INFO("RTCK not supported");
964 return ERROR_JTAG_NOT_IMPLEMENTED;
967 return cmsis_dap_cmd_DAP_SWJ_Clock(speed);
970 static int cmsis_dap_speed_div(int speed, int *khz)
976 static int cmsis_dap_khz(int khz, int *jtag_speed)
982 COMMAND_HANDLER(cmsis_dap_handle_info_command)
984 if (cmsis_dap_get_version_info() == ERROR_OK)
985 cmsis_dap_get_status();
990 COMMAND_HANDLER(cmsis_dap_handle_vid_pid_command)
992 if (CMD_ARGC > MAX_USB_IDS * 2) {
993 LOG_WARNING("ignoring extra IDs in cmsis_dap_vid_pid "
994 "(maximum is %d pairs)", MAX_USB_IDS);
995 CMD_ARGC = MAX_USB_IDS * 2;
997 if (CMD_ARGC < 2 || (CMD_ARGC & 1)) {
998 LOG_WARNING("incomplete cmsis_dap_vid_pid configuration directive");
1000 return ERROR_COMMAND_SYNTAX_ERROR;
1001 /* remove the incomplete trailing id */
1006 for (i = 0; i < CMD_ARGC; i += 2) {
1007 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i], cmsis_dap_vid[i >> 1]);
1008 COMMAND_PARSE_NUMBER(u16, CMD_ARGV[i + 1], cmsis_dap_pid[i >> 1]);
1012 * Explicitly terminate, in case there are multiples instances of
1013 * cmsis_dap_vid_pid.
1015 cmsis_dap_vid[i >> 1] = cmsis_dap_pid[i >> 1] = 0;
1020 COMMAND_HANDLER(cmsis_dap_handle_serial_command)
1022 if (CMD_ARGC == 1) {
1023 size_t len = mbstowcs(NULL, CMD_ARGV[0], 0);
1024 cmsis_dap_serial = calloc(len + 1, sizeof(wchar_t));
1025 if (cmsis_dap_serial == NULL) {
1026 LOG_ERROR("unable to allocate memory");
1029 if (mbstowcs(cmsis_dap_serial, CMD_ARGV[0], len + 1) == (size_t)-1) {
1030 free(cmsis_dap_serial);
1031 cmsis_dap_serial = NULL;
1032 LOG_ERROR("unable to convert serial");
1035 LOG_ERROR("expected exactly one argument to cmsis_dap_serial <serial-number>");
1041 static const struct command_registration cmsis_dap_subcommand_handlers[] = {
1044 .handler = &cmsis_dap_handle_info_command,
1045 .mode = COMMAND_EXEC,
1047 .help = "show cmsis-dap info",
1049 COMMAND_REGISTRATION_DONE
1052 static const struct command_registration cmsis_dap_command_handlers[] = {
1054 .name = "cmsis-dap",
1055 .mode = COMMAND_ANY,
1056 .help = "perform CMSIS-DAP management",
1058 .chain = cmsis_dap_subcommand_handlers,
1061 .name = "cmsis_dap_vid_pid",
1062 .handler = &cmsis_dap_handle_vid_pid_command,
1063 .mode = COMMAND_CONFIG,
1064 .help = "the vendor ID and product ID of the CMSIS-DAP device",
1065 .usage = "(vid pid)* ",
1068 .name = "cmsis_dap_serial",
1069 .handler = &cmsis_dap_handle_serial_command,
1070 .mode = COMMAND_CONFIG,
1071 .help = "set the serial number of the adapter",
1072 .usage = "serial_string",
1074 COMMAND_REGISTRATION_DONE
1077 static const struct swd_driver cmsis_dap_swd_driver = {
1078 .init = cmsis_dap_swd_init,
1079 .read_reg = cmsis_dap_swd_read_reg,
1080 .write_reg = cmsis_dap_swd_write_reg,
1081 .run = cmsis_dap_swd_run,
1084 const char *cmsis_dap_transport[] = {"cmsis-dap", NULL};
1086 struct jtag_interface cmsis_dap_interface = {
1087 .name = "cmsis-dap",
1088 .commands = cmsis_dap_command_handlers,
1089 .swd = &cmsis_dap_swd_driver,
1090 .transports = cmsis_dap_transport,
1092 .execute_queue = cmsis_dap_execute_queue,
1093 .speed = cmsis_dap_speed,
1094 .speed_div = cmsis_dap_speed_div,
1095 .khz = cmsis_dap_khz,
1096 .init = cmsis_dap_init,
1097 .quit = cmsis_dap_quit,