Subject: Re: FT2232H bug: wrong maxpacket at full speed
On Monday 02 November 2009, Thomas Jarosch wrote:
> Thanks for reporting this issue. Maybe there's a way to ask libusb
> about the maximum packet size, I'll have to check that. Otherwise
> we would need to go the sysfs route.
I don't know about portable options ... but <usb.h> in Linux
does at least show the config descriptor hanging out in the
usb_device data structure, which means you could parse it.
> Does anyone know if it's a valid thing to do for a USB device
> to switch to a lower speed during one "session"?
Such a thing isn't valid. It would be a new session. Plus
there'd be the issue of how to ask for such behavior....
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