Sorry, I am not a dev, so the information I provide might be incomplete. But it
looks like the patch is addressing only device opening, but not the proper
closing. Also some errors are printed by the "jtag_libusb_open" from
'libusb1_common.c' while it is trying to open the interfaces, in particular by
these lines:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
errCode = libusb_open(devs[idx], &libusb_handle);
if (errCode) {
LOG_ERROR("libusb_open() failed with %s",
libusb_error_name(errCode));
continue;
}
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
But then the device is opened and seem to work correctly.
---
** [tickets:#96] ti_icdi_usb not choosing the right interface on Windows 8.1**
**Status:** new
**Milestone:** 0.9.0
**Created:** Tue Apr 28, 2015 10:10 PM UTC by Eugene Sh.
**Last Updated:** Tue Apr 28, 2015 10:10 PM UTC
**Owner:** nobody
The Tiva C launchpad with onboard TI ICDI is creating 3 different devices under
the same VID:PID. Using the `listdevs` example util from libusb-1.0 bundle:
1cbe:00fd (bus 3, device 3) path: 1.1
1cbe:00fd (bus 3, device 3) path: 1.1
And "Stellaris Virtual serial port" in addition. The ti_icdi_usb.c is using the
"libusb_open_device_with_vid_pid" function to find the FIRST device with the
given VID:PID and
attempt to open it, which is failing on Windows 8.1 (it worked on Windows 7).
It appears that the enumeration order have changed between the win versions.
[This patch](http://openocd.zylin.com/#/c/2527/) appears to address this issue
partially.
---
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