Lpc2000

Varuzhan,

    On Keil's website, there is an app-note how to use the soft 
connect: http://www.keil.com/support/docs/3141.htm

    It's a regret that, unlike Olimex and IAR board, Keil's board 
doesn't have the soft connect feature on the board. So, you will 
have to rewire the board as seen on the Olimex schematics or Keil's 
app-note.
    I have tested with both external power supply and USB power
with soft connect logic. It works just fine. What Joel said is true: 
set PINSEL1 to use "soft connect", then send SET_DEVICE_STATUS 
command to protocol engine by calling "USB_Connect(TRUE)" as seen in 
Keil's example. I think you may want to check your H/W logic again.

    In Keil's example, you may want to add "USB_Connect(TRUE)"
in the ISR handler, right after USB_Reset(), to deal with bus reset 
interrupt, just to be safe.

Regards,

Tom


--- In lpc2000@yahoogroups.com, "varuzhandanielyan" <dan@...> wrote:
>
> Hi, Joel
> 
> I changed P0.31 to be configured as CONNECT:
>   PINSEL1 |= 0x80004000; // 0x40004000;                   /* Select
> USB Link, VBUS */
> 
> The CON bit (page 225) is already set by the call in the Keil 
example:
>   USB_Connect(TRUE);                        /* USB Connect */
> 
> But it still does not work.
> 
> By the way, my previous project with LPC2138 and FTDIChip FT2232C
> started to work without any problem.  It is pity, that the LPC2148 
USB
> usage requires such effort.
> 
> Varuzhan
> 
> 
> --- In lpc2000@yahoogroups.com, "Joel Winarske" <joelw@> wrote:
> >
> > Hi Varuzhan,
> > 
> > > > When PINSEL0 P0.31 is configured for CONNECT, refer to page 
225 of
> > > the User
> > > > Manual for control of this pin.
> > 
> > Did you configure PINSEL0 P0.31 for CONNECT?
> > Are you sending command as per page 225 to connect/disconnect?
> > 
> > 
> > Joel
> >
>