[Gmecm] Any USB developers out there?

[Steve Ravet]

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org 
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of Paul Smith
> Sent: Monday, November 06, 2006 8:10 PM
> To: gmecm at diy-efi.org
> Subject: Re: [Gmecm] Any USB developers out there?
> 
> 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
> 


Hi Paul.  I have uploaded the project to the TWiki page:

http://www.diy-efi.org/twiki/bin/view.pl/Gmecm/UsbVpw

I think the problem is in hardware instead of software.  I am testing
the board with a keyboard/mouse demo that is supposed to move the mouse
in a circle and send keystrokes.  This firmware works on the PIC demo
board that I bought, but it doesn't work on my PCB.  I ran usbview.exe
to see that most of the enumeration is correct except the last 4 items:

my board                              demo board
----------------------------------------------------------------
Current Config Value: 0x00            Current Config Value: 0x01 
Device Bus Speed: Low                 Device Bus Speed: Full 
Device Address: 0x00                  Device Address: 0x01 
Open Pipes: 0                         Open Pipes: 1  

That stuff is clear as mud to me.  The thing that stands out is the Bus
Speed.  I don't know why my PCB shows up as Low while the demo board is
Full.  I have checked the D- and D+ lines and the pullup is in the right
place.

I am using the PIC18F2455.  I posted to the microchip forums also and
got some suggestions but haven't found the answer yet.  That thread is
here:

http://forum.microchip.com/tm.aspx?m=185797

thanks for any help,

--steve