Re: [Fx2lib-devel] Trouble running speed.py

[Dennis M. <de...@ub...>]

I think when I got 43, I had modified the sample to commit packets in  
a loop, instead of going through the entire main loop to commit each  
packet

something like:

whie ( !(EP2468STAT & bmEP2EMPTY)) {
   // commit the packet
}

So the end result was you would only cycle through the main loop if  
there was no buffers available.  It seems like if you cycle through  
the loop each time before committing a packet, that the fx2 isn't fast  
enough to keep up with the maximum bandwidth.

-Dennis

On Jul 7, 2009, at 1:18 PM, Chris McClelland wrote:

> I tried with a fairly new machine (Athlon64/Asus M2N nForce4 mobo). I
> got just slightly under 34MB/s both on Windows XP (using CyStream.exe,
> which I was eventually able to find here:
> http://download.cypress.com/design_resources/reference_designs/contents/cystream___streaming_over_usb_with_isochronous_and_bulk_transfers_19.zip)
> and on Linux. The number I got from Linux was from an Ubuntu image
> running in vmplayer running on an XP host.
>
> I only tried your firmware though, with the minor code change  
> mentioned
> before. I didn't try rebuilding the Cypress firmware with the same  
> fix.
>
> I'll try on another few PCs and configurations and let you know how I
> get on, but it will take several days.
>
> - Chris
>
> ------------------------------------------------------------------------------
> Enter the BlackBerry Developer Challenge
> This is your chance to win up to $100,000 in prizes! For a limited  
> time,
> vendors submitting new applications to BlackBerry App World(TM) will  
> have
> the opportunity to enter the BlackBerry Developer Challenge. See  
> full prize
> details at: http://p.sf.net/sfu/blackberry
> _______________________________________________
> Fx2lib-devel mailing list
> Fx2...@li...
> https://lists.sourceforge.net/lists/listinfo/fx2lib-devel