Lpc2000

Nothing helps.

I am going step-by-step using ULINK and watching the P0.31
state by scope.
If I configure P0.31 as output, I can easily set it to 0 or
1, but when I configure it for CONNECT inside the USB_Init() :
PINSEL1 |=  0x80004000;
and try to set the SoftConnect_N active, P0.31 remains in
high (inactive) state.
I tried both calling the USB_Connect(TRUE) and immediate
by commands
CMD_CODE = 0x00FE0500;
CMD_CODE = 0x00010100;
placing them in different places, particularly after
USB_Reset() as recommended - no effect.

Please, help me, what is wrong?

Great thanks in advance,
Varuzhan



--- In lpc2000@yahoogroups.com, "philips_apps" <philips_apps@...> wrote:
>
> 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@...m, "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
> > >
> >
>