Lpc2000

can you give me the proper link for IAR code?

about my code:

/*Enable Read Mode and program the LOG_ENDPOINT High*/
USB_CTRL = (DATA_TRANS_EP  << 2) | CTRL_RD_EN;

& then i am checking for PKT_RDY bit as below.
if (RX_PLENGTH & PKT_RDY)
read the data.


& here the if condition is always true. thats the main problem.

regards,
Manisha


-----Original Message-----
From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On Behalf
Of ian.scanlon
Sent: Friday, April 07, 2006 7:13 PM
To: lpc2000@yahoogroups.com
Subject: [lpc2000] Re: Please help:: checking for data receive in USB
Endpoint


--- In lpc2000@yahoogroups.com, Manisha Kalita <manisha@...> wrote:
>
> ya its lpc 2148 board
> ARM7 running at 60MHz, flash of 512 KB, RAM with 32 KB + 8 KB 
Shared with
> USB DMA & USB 2.0 Device controller (Full Speed)DMA supported. 
using gcc. &
> yes some help from sample code, i dont remeber the source.
> 
> Regards,
> Manisha
> 
> -----Original Message-----
> From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com]On 
Behalf
> Of ian.scanlon
> Sent: Friday, April 07, 2006 6:36 PM
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: Please help:: checking for data receive in 
USB
> Endpoint
> 
> 
> --- In lpc2000@yahoogroups.com, Manisha Kalita <manisha@> wrote:
> >
> > Hi all,
> >
> > i am designing an USB driver in lpc2000 board.
> 
> lpc2000 board?? what hardware? compiler? using example code from
> ____? PC test application?
> 
> 
> 
> it is sending the data
> > properly. however, during reception, i am checking if any data is
> there in
> > the deveice register RXPLENGTH. if there is any peacket, PKT-RDY
> bit of this
> > register is set. but, in my case, even though no data is sent from
> the host,
> > PKT_RDY bit is always set. i am using interrupt transfer and so
> using
> > logical endpoint as 1.
> >

Can't really say why your code doesn't work, but the example code 
from Keil and IAR works well (mostly).

Take a look at the IAR USB sample code. LPC_USB.c -> USB_EpRead(...  
It is copyrighted so I won't post it here.  Did you write the Read 
enable bit?








 
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