[Gmecm] Any USB developers out there?

[Paul Smith]

I would'nt call myself a USB expert but would be willing to help if you do
not get any other volunteers.

I have worked a bit with the 18f2550 series that supports USB.

Paul

> This really is EFI related.  I'm working on an open source type hardware
> project that will allow connecting a PC to an OBD2 GM PCM via the USB
> port.  It'll support 4x mode for reflashing.  I've got a prototype PCB
> built but am having problems with the USB enumeration.  Some of the
> enumeration info is right but some is wrong, the biggest of which is
> that it's being identified as a low speed peripheral instead of a full
> speed, even though the pullup resistors are on the right wires.  It's a
> microchip microprocessor, which I now recognize to be a poor choice, but
> it's what I have.  If anyone has experience with USB, especially
> microchip firmware, I could sure use a hand.
>
> thanks,
> --steve
>
> -------------------
> Steve Ravet
> ARM
> steve.ravet at arm.com
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