[Diy_efi] Any USB developers out there?

[Bevan Weiss]

There's an application called USBview available from Microsoft or FTDI 
that allows you to view all the enumeration data that your device is 
reporting.  That might help.

Try just jumping the pullup onto the other line.  I can't remember which 
way around they go, but if you're device is reporting itself as a low 
speed device then it's likely it's around the wrong way.  Either way 
it'll do no harm to swap it over to test...


Bevan

> Try asking on Microchip's forums or on the forums at www.piclist.org .
> -Neil.
>
>
> On Monday 06 November 2006 19:21, Steve Ravet wrote:
>   
>> 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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