Re: USB SET_DESCRIPTOR_TO_DEVICE ??

grg183 <grgsaliba@xxxxxxxxx> wrote:

I am trying to reverse engineer a usb driver and am using libusb. I'm
stuck on the urb below (snoopypro log) ...I cannot seem to find any
information about the SET_DESCRIPTOR_TO_DEVICE function.

Well, it's in the USB spec.

SetupPacket:
0000: 00 07 14 03 09 04 02 00

This is trying to set string descriptor (0x03) number 20 (0x14) in the US
English language (0x0409) to a one-character (2 byte) string.

It is a standard request, but I have to admit that I have never encountered
a device that implemented it. Most devices consider their descriptors to
be read-only.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
.

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