Re: force USB_SPEED_FULL for device
"Gabriel Maganis" <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
Hello,
Thanks for the help below. I am trying to answer "what will the
keyboard send me if I send it a packet configured over
USB_SPEED_FULL?". Simply setting usb_device->speed to USB_SPEED_FULL
doesn't work as the packet does not even get sent by the
subsystem/hcd.
Would you have an idea how I can at least send the packet over the wire?
Thanks,
Gabriel
On 7/27/07, Till Harbaum / Lists <[email protected]> wrote:
> Hi,
>
> from the device side a low speed and a full speed device differ fundamentally.
> They even differ in the way a resistor is connected to the USB data lines. You
> can't just overwrite this by software. It's a hardware thing.
>
> Till
>
> Am Freitag 27 Juli 2007 schrieb Gabriel Maganis:
> > Hello,
> > How could one "force" a device to be configured with
> > USB_SPEED_FULL if it's a USB_SPEED_LOW device i.e. a Dell keyboard? I
> > tried to simply set usb_device->speed = USB_SPEED_FULL but I get a
> > protocol error. I then tried to "trace" where the EPROTO is being
> > generated but couldn't do so.
> >
> > Thanks
> >
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