Lpc2000

Hi Joel,

Would you be willing to share your IAR ports of the Keil Code?

Ian


--- In lpc2000@yahoogroups.com, "Joel Winarske" <joelw@i...> wrote:
>
> Hi Varuzhan,
> 
> > There are several examples of the LPC2148 USB port
> > usage, though there are very difficult to adapt for
> > user's need.  But, besides, some have very strange
> > behaviour.  For example the USBHID from Keil, running
> > on the MCB2148 evaluaton board.
> > To be recogized by PC, the USB cable should be disconnected
> > from the board and then connected again.  After it
> > the example starts to work..., but until the microcontroller
> > was reseted.  Then one again needs to repeat the
> > disconnect/connect procedure to make the board work.
> > Sure, such software is useless for more or less real usage.
> > For example, the microcontroller can be resetted by the
> > watchdog and the USB connection will be lost.
> > So my questions:
> > 
> 
> When working with the USB examples be sure to start with the USB 
audio
> example.  It appears to be the most recent.
> 
> > 1. Is such behaviour property of LPC2148 or just the
> > Keil example?
> 
> I've ported two of the Keil USB based examples to IAR without the 
problem
> you mention.  The Keil board does not implement the "Connect" 
feature,
> perhaps this is the difference.
> 
> > 2. Are there available examples of the LPC2148 USB usage
> > without such problems?
> 
> The IAR LPC2148 KS board implements the "Connect" feature.
> 
> The Keil examples are a reasonable starting point, but still 
require some
> work.  When using these examples I would advise an Ellisys USB 
analyzer to
> confirm your work.
> 
> 
> Joel
>