Lpc2000

--- In lpc2000@yahoogroups.com, "mark_dell555" <mark_dell555@y...> 
wrote:
>
> Hi, I compiled the Keil Mass Storage example for the LPC2146 (just
> changed the compiler settings to LPC2146), however when I try to run
> it on my LPC2146 board, it sees the mass storage device fine, and 
can
> read from it, however it cant write anything to it (XP stalls).
> 
> Anyways I wasnt sure what the problem, and went on to putting 
togather
> my own bulk transfer protocol, and now I'm having another problem
> where BulkOut interrupt fires fine, but BulkIn interrupt doesnt fire
> at all, and my device reads timeout (using libusb-win32).
> 
> So I'm wondering if the two problems are related?  Has anyone else 
had
> similar problems with the keil usb stack?  Any help is, as always,
> greatly appriciated.
> 
> 
> Cheers,
> Mark
>

Hi mark

I had the same problem with my own bulk-in transfer intially, but it 
was solved after I made sure there was always a filled Bulk-In 
endpoint. So you should fill the endpoint even before the host 
requests for data. You only get an interrupt to fill the bulk-in 
endpoint after a successful transaction. 

Jeroen