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patch #8435: Implementing mEDBG CMSIS-DAP protocol 

* usb_libusb.c: Add endpoint IDs for Xplained Mini, correctly
transfer trailing ZLP when needed
* avrdude.conf.in (xplainedmini, xplainedmini_dw): New entries.
* jtag3.c (jtag3_edbg_send, jtag3_edbg_recv_frame): Implement
fragmentation needed for the 64-byte EP size of the Xplained Mini




git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1369 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Joerg Wunsch 2016-02-15 19:58:45 +00:00
parent b41fbccf3d
commit a7238c44af
5 changed files with 188 additions and 74 deletions
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9
ChangeLog
View File

@ -0,0 +1,9 @@
2016-02-15 Joerg Wunsch <j.gnu@uriah.heep.sax.de>
patch #8435: Implementing mEDBG CMSIS-DAP protocol
* usb_libusb.c: Add endpoint IDs for Xplained Mini, correctly
transfer trailing ZLP when needed
* avrdude.conf.in (xplainedmini, xplainedmini_dw): New entries.
* jtag3.c (jtag3_edbg_send, jtag3_edbg_recv_frame): Implement
fragmentation needed for the 64-byte EP size of the Xplained Mini

4
NEWS
View File

@ -18,8 +18,12 @@ Current:
* New programmers supported:
- Atmel mEDBG: xplainedmini, xplainedmini_dw
* Bugfixes
- patch #8435: Implementing mEDBG CMSIS-DAP protocol
* Internals:

16
avrdude.conf.in
View File

@ -1094,6 +1094,22 @@ programmer
usbpid = 0x2111;
;
programmer
id = "xplainedmini";
desc = "Atmel AVR XplainedMini in ISP mode";
type = "jtagice3_isp";
connection_type = usb;
usbpid = 0x2145;
;
programmer
id = "xplainedmini_dw";
desc = "Atmel AVR XplainedMini in debugWIRE mode";
type = "jtagice3_dw";
connection_type = usb;
usbpid = 0x2145;
;
programmer
id = "atmelice";
desc = "Atmel-ICE (ARM/AVR) in JTAG mode";

224
jtag3.c
View File

@ -446,39 +446,66 @@ static int jtag3_edbg_send(PROGRAMMER * pgm, unsigned char * data, size_t len)
avrdude_message(MSG_DEBUG, "\n%s: jtag3_edbg_send(): sending %lu bytes\n",
progname, (unsigned long)len);
if (len + 8 > USBDEV_MAX_XFER_3)
/* 4 bytes overhead for CMD, fragment #, and length info */
int max_xfer = pgm->fd.usb.max_xfer;
int nfragments = (len + max_xfer - 1) / max_xfer;
if (nfragments > 1)
{
avrdude_message(MSG_INFO, "%s: jtag3_edbg_send(): Fragmentation not (yet) implemented!\n",
progname);
return -1;
avrdude_message(MSG_DEBUG, "%s: jtag3_edbg_send(): fragmenting into %d packets\n",
progname, nfragments);
}
buf[0] = EDBG_VENDOR_AVR_CMD;
buf[1] = (1 << 4) | 1; /* first out of a total of 1 fragments */
buf[2] = (len + 4) >> 8;
buf[3] = (len + 4) & 0xff;
buf[4] = TOKEN;
buf[5] = 0; /* dummy */
u16_to_b2(buf + 6, PDATA(pgm)->command_sequence);
memcpy(buf + 8, data, len);
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_send(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, USBDEV_MAX_XFER_3);
if (rv < 0) {
/* timeout in receive */
avrdude_message(MSG_NOTICE2, "%s: jtag3_edbg_send(): Timeout receiving packet\n",
progname);
return -1;
}
if (status[0] != EDBG_VENDOR_AVR_CMD || status[1] != 0x01)
int frag;
for (frag = 0; frag < nfragments; frag++)
{
/* what to do in this case? */
avrdude_message(MSG_INFO, "%s: jtag3_edbg_send(): Unexpected response 0x%02x, 0x%02x\n",
progname, status[0], status[1]);
int this_len;
/* All fragments have the (CMSIS-DAP layer) CMD, the fragment
* identifier, and the length field. */
buf[0] = EDBG_VENDOR_AVR_CMD;
buf[1] = ((frag + 1) << 4) | nfragments;
if (frag == 0)
{
/* Only first fragment has TOKEN and seq#, thus four bytes
* less payload than subsequent fragments. */
this_len = len < max_xfer - 8? len: max_xfer - 8;
buf[2] = (this_len + 4) >> 8;
buf[3] = (this_len + 4) & 0xff;
buf[4] = TOKEN;
buf[5] = 0; /* dummy */
u16_to_b2(buf + 6, PDATA(pgm)->command_sequence);
memcpy(buf + 8, data, this_len);
}
else
{
this_len = len < max_xfer - 4? len: max_xfer - 4;
buf[2] = (this_len) >> 8;
buf[3] = (this_len) & 0xff;
memcpy(buf + 4, data, this_len);
}
if (serial_send(&pgm->fd, buf, max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_send(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, max_xfer);
if (rv < 0) {
/* timeout in receive */
avrdude_message(MSG_NOTICE2, "%s: jtag3_edbg_send(): Timeout receiving packet\n",
progname);
return -1;
}
if (status[0] != EDBG_VENDOR_AVR_CMD ||
(frag == nfragments - 1 && status[1] != 0x01))
{
/* what to do in this case? */
avrdude_message(MSG_INFO, "%s: jtag3_edbg_send(): Unexpected response 0x%02x, 0x%02x\n",
progname, status[0], status[1]);
}
data += this_len;
len -= this_len;
}
return 0;
@ -501,13 +528,13 @@ static int jtag3_edbg_prepare(PROGRAMMER * pgm)
buf[0] = CMSISDAP_CMD_CONNECT;
buf[1] = CMSISDAP_CONN_SWD;
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
if (serial_send(&pgm->fd, buf, pgm->fd.usb.max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_prepare(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, USBDEV_MAX_XFER_3);
if (rv != USBDEV_MAX_XFER_3) {
rv = serial_recv(&pgm->fd, status, pgm->fd.usb.max_xfer);
if (rv != pgm->fd.usb.max_xfer) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_prepare(): failed to read from serial port (%d)\n",
progname, rv);
return -1;
@ -522,13 +549,13 @@ static int jtag3_edbg_prepare(PROGRAMMER * pgm)
buf[0] = CMSISDAP_CMD_LED;
buf[1] = CMSISDAP_LED_CONNECT;
buf[2] = 1;
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
if (serial_send(&pgm->fd, buf, pgm->fd.usb.max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_prepare(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, USBDEV_MAX_XFER_3);
if (rv != USBDEV_MAX_XFER_3) {
rv = serial_recv(&pgm->fd, status, pgm->fd.usb.max_xfer);
if (rv != pgm->fd.usb.max_xfer) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_prepare(): failed to read from serial port (%d)\n",
progname, rv);
return -1;
@ -560,13 +587,13 @@ static int jtag3_edbg_signoff(PROGRAMMER * pgm)
buf[0] = CMSISDAP_CMD_LED;
buf[1] = CMSISDAP_LED_CONNECT;
buf[2] = 0;
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
if (serial_send(&pgm->fd, buf, pgm->fd.usb.max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_signoff(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, USBDEV_MAX_XFER_3);
if (rv != USBDEV_MAX_XFER_3) {
rv = serial_recv(&pgm->fd, status, pgm->fd.usb.max_xfer);
if (rv != pgm->fd.usb.max_xfer) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_signoff(): failed to read from serial port (%d)\n",
progname, rv);
return -1;
@ -577,13 +604,13 @@ static int jtag3_edbg_signoff(PROGRAMMER * pgm)
progname, status[0], status[1]);
buf[0] = CMSISDAP_CMD_DISCONNECT;
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
if (serial_send(&pgm->fd, buf, pgm->fd.usb.max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_signoff(): failed to send command to serial port\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, status, USBDEV_MAX_XFER_3);
if (rv != USBDEV_MAX_XFER_3) {
rv = serial_recv(&pgm->fd, status, pgm->fd.usb.max_xfer);
if (rv != pgm->fd.usb.max_xfer) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_signoff(): failed to read from serial port (%d)\n",
progname, rv);
return -1;
@ -644,8 +671,9 @@ static int jtag3_recv_frame(PROGRAMMER * pgm, unsigned char **msg) {
}
static int jtag3_edbg_recv_frame(PROGRAMMER * pgm, unsigned char **msg) {
int rv, len;
int rv, len = 0;
unsigned char *buf = NULL;
unsigned char *request;
avrdude_message(MSG_TRACE, "%s: jtag3_edbg_recv():\n", progname);
@ -654,42 +682,92 @@ static int jtag3_edbg_recv_frame(PROGRAMMER * pgm, unsigned char **msg) {
progname);
return -1;
}
buf[0] = EDBG_VENDOR_AVR_RSP;
if (serial_send(&pgm->fd, buf, USBDEV_MAX_XFER_3) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): error sending CMSIS-DAP vendor command\n",
progname);
return -1;
}
rv = serial_recv(&pgm->fd, buf, USBDEV_MAX_XFER_3);
if (rv < 0) {
/* timeout in receive */
avrdude_message(MSG_NOTICE2, "%s: jtag3_edbg_recv(): Timeout receiving packet\n",
progname);
if ((request = malloc(pgm->fd.usb.max_xfer)) == NULL) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): out of memory\n",
progname);
free(buf);
return -1;
}
if (buf[0] != EDBG_VENDOR_AVR_RSP ||
buf[1] != ((1 << 4) | 1)) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): Unexpected response 0x%02x, 0x%02x\n",
progname, buf[0], buf[1]);
return -1;
}
/* calculate length from response; CMSIS-DAP response might be larger */
len = (buf[2] << 8) | buf[3];
if (len > rv + 4) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): Unexpected length value (%d > %d)\n",
progname, len, rv + 4);
len = rv + 4;
}
memmove(buf, buf + 4, len);
*msg = buf;
int nfrags = 0;
int thisfrag = 0;
do {
request[0] = EDBG_VENDOR_AVR_RSP;
if (serial_send(&pgm->fd, request, pgm->fd.usb.max_xfer) != 0) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): error sending CMSIS-DAP vendor command\n",
progname);
free(request);
free(*msg);
return -1;
}
rv = serial_recv(&pgm->fd, buf, pgm->fd.usb.max_xfer);
if (rv < 0) {
/* timeout in receive */
avrdude_message(MSG_NOTICE2, "%s: jtag3_edbg_recv(): Timeout receiving packet\n",
progname);
free(*msg);
free(request);
return -1;
}
if (buf[0] != EDBG_VENDOR_AVR_RSP) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): Unexpected response 0x%02x\n",
progname, buf[0]);
free(*msg);
free(request);
return -1;
}
/* calculate fragment information */
if (thisfrag == 0) {
/* first fragment */
nfrags = buf[1] & 0x0F;
thisfrag = 1;
} else {
if (nfrags != (buf[1] & 0x0F)) {
avrdude_message(MSG_INFO,
"%s: jtag3_edbg_recv(): "
"Inconsistent # of fragments; had %d, now %d\n",
progname, nfrags, (buf[1] & 0x0F));
free(*msg);
free(request);
return -1;
}
}
if (thisfrag != ((buf[1] >> 4) & 0x0F)) {
avrdude_message(MSG_INFO,
"%s: jtag3_edbg_recv(): "
"Inconsistent fragment number; expect %d, got %d\n",
progname, thisfrag, ((buf[1] >> 4) & 0x0F));
free(*msg);
free(request);
return -1;
}
int thislen = (buf[2] << 8) | buf[3];
if (thislen > rv + 4) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): Unexpected length value (%d > %d)\n",
progname, thislen, rv + 4);
thislen = rv + 4;
}
if (len + thislen > USBDEV_MAX_XFER_3) {
avrdude_message(MSG_INFO, "%s: jtag3_edbg_recv(): Length exceeds max size (%d > %d)\n",
progname, len + thislen, USBDEV_MAX_XFER_3);
thislen = USBDEV_MAX_XFER_3 - len;
}
memmove(buf, buf + 4, thislen);
thisfrag++;
len += thislen;
buf += thislen;
} while (thisfrag <= nfrags);
free(request);
return len;
}

9
usb_libusb.c
View File

@ -166,6 +166,13 @@ static int usbdev_open(char * port, union pinfo pinfo, union filedescriptor *fd)
fd->usb.eep = 0;
}
if(strstr(product, "mEDBG") != NULL)
{
/* The AVR Xplained Mini uses different endpoints. */
fd->usb.rep = 0x81;
fd->usb.wep = 0x02;
}
avrdude_message(MSG_NOTICE, "%s: usbdev_open(): Found %s, serno: %s\n",
progname, product, string);
if (serno != NULL)
@ -353,7 +360,7 @@ static int usbdev_send(union filedescriptor *fd, const unsigned char *bp, size_t
}
bp += tx_size;
mlen -= tx_size;
} while (tx_size == fd->usb.max_xfer);
} while (mlen > 0);
if (verbose > 3)
{