I tested to your 2 patches.
http://openocd.zylin.com/5731
http://openocd.zylin.com/5732
And I confirmed CMSIS-DAP can use collectly by LPC-LINK2.
(both Windows and Linux build)
(And -c "cmsis_dap_vid_pid 0x1fc9 0x90" is specified and not)
> The LPC-Link2 has 3 HID interfaces, but only one is the right one for
> cmsis-dap.
Yes, It seem LPC-Link2 has 3 HID interfaces.
Each interfaces is as followed.
* VID=1fc9, PID=90, serial = I3F4AABA, interface number = 03, product_strings =
"LPCSIO"
* VID=1fc9, PID=90, serial = I3F4AABA, interface number = 00, product_strings =
"PC-LINK2 CMSIS-DAP"
* VID=1fc9, PID=90, serial = I3F4AABA, interface number = 04, product_strings =
"LPC-LINK2 DATA PORT"
> Apparently, OpenOCD find the right one in cmsis_dap_usb_open(), but then pass
> VID:PID + serial to hid_open(),
OpenOCD checks product_string if vendorid is not specified.
"if (wcsstr(cur_dev->product_string, L"CMSIS-DAP"))"
And then, open interface of CMSIS-DAP correctly.
> and hid_open() opens the HID path of another interface.
But hid_open() looks only vid,pid,serial.
And then open interface of LPCSIO.
Of course, it doesn't work correctly when vid/pid is specified, so my before
patch is bad.
Thanks,
tateishi
---
** [tickets:#255] LPC-Link2 Not Working as CMSIS-DAP**
**Status:** new
**Milestone:** 0.9.0
**Created:** Mon Nov 04, 2019 01:35 AM UTC by Donald Bailey
**Last Updated:** Mon Jun 29, 2020 10:47 PM UTC
**Owner:** nobody
Hi,
I'm working on a project with the NXP LPC824 using VisualGDB and OpenOCD. Using
the LPCXpresso824-MAX dev board I had no trouble programming and debugging
using OpenOCD. I have recently built my first prototype PCB for this project
and purchased an LPC-Link2 to use as a CMSIS-DAP debugger with it. However, I
am unable to get the LPC-Link2 to work with OpenOCD. I keep getting a
"CMSIS-DAP command CMD_INFO failed" error.
I have flashed the CMSIS-DAP firmware to the LPC-Link2, reinstalled the
drivers, and followed any other troubleshooting tips I could find, but with no
success. The LPC-Link2 works when flashed with the Segger J-Link firmware and
also with the CMSIS-DAP firmware when debugging through MCUXpresso, so it does
not appear to be a problem with the probe or the firmware but rather something
specific to OpenOCD. There is nothing wrong with the target board because, as a
workaround, I have removed the target MCU from the LPCXpresso824-MAX and am
using its external debug header to debug the target MCU on my PCB.
I am using the version of OpenOCD that comes with VisualGDB (0.10.0) but I have
also tried the 0.10.0 version that is from the MSYS2 repositories I am on
Windows 10.
Here is the output of my version of OpenOCD with the LPC-Link2 with debug
turned on.
```
openocd.exe -f interface/cmsis-dap.cfg -c "debug_level 4"
Open On-Chip Debugger 0.10.0 (2019-08-28) [https://github.com/sysprogs/openocd]
Licensed under GNU GPL v2
For bug reports, read
http://openocd.org/doc/doxygen/bugs.html
User : 14 6 options.c:60 configuration_output_handler(): debug_level: 4
User : 15 9 options.c:60 configuration_output_handler():
Info : 16 13 server.c:311 add_service(): Listening on port 6666 for tcl
connections
Info : 17 16 server.c:311 add_service(): Listening on port 4444 for telnet
connections
Debug: 18 19 command.c:143 script_debug(): command - init init
Debug: 20 21 command.c:143 script_debug(): command - target target init
Debug: 22 23 command.c:143 script_debug(): command - target target names
Debug: 23 26 target.c:1431 handle_target_init_command(): Initializing targets...
Debug: 24 59 cmsis_dap_usb.c:251 cmsis_dap_usb_open(): Cannot read product
string of device 0x46d:0xc232
Debug: 25 65 cmsis_dap_usb.c:251 cmsis_dap_usb_open(): Cannot read product
string of device 0x46d:0xc231
Debug: 26 1075 cmsis_dap_usb.c:409 cmsis_dap_usb_xfer(): error reading data:
(null)
Error: 27 1081 cmsis_dap_usb.c:503 cmsis_dap_cmd_DAP_Info(): CMSIS-DAP command
CMD_INFO failed.
Debug: 28 1088 command.c:630 run_command(): Command 'init' failed with error
code -107
User : 29 1103 command.c:695 command_run_line():
```
Any ideas? I have tried the NXP forums and StackExchange but noone seems to
know anything.
Regards,
Donald
---
Sent from sourceforge.net because openocd-devel@lists.sourceforge.net is
subscribed to https://sourceforge.net/p/openocd/tickets/
To unsubscribe from further messages, a project admin can change settings at
https://sourceforge.net/p/openocd/admin/tickets/options. Or, if this is a
mailing list, you can unsubscribe from the mailing list._______________________________________________
OpenOCD-devel mailing list
OpenOCD-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/openocd-devel
