Lpc2000

Hello,
You can try the following:
@ RTC init, clear all RTC registers --> (write 0 to all)
than make sure, you do not write the 'reserved' bits, this can cause 
something like that to happen.. I had sort of the same problem.. and 
the earlier mentioned steps solved my problem!!
Good luck!
Gerrit de Waard


--- In lpc2000@yahoogroups.com, "Gordon Melby" <gm1529@...> wrote:
>
> I have had issues with 32 khz crystals when there are digital 
signals in the
> area of the crystal. make sure you have ground plane protecting the 
crystal
> pins
>  
> Gordon
>  
> 
> -----Original Message-----
> From: lpc2000@yahoogroups.com [mailto:lpc2000@yahoogroups.com] On 
Behalf Of
> Pandurang Shinde
> Sent: Wednesday, March 22, 2006 5:35 AM
> To: lpc2000@yahoogroups.com
> Subject: RE: [lpc2000] Re: RTC problem in 2136
> 
> 
> thanks for immediate reply.
> Yes i am using external watch crystal of 32 khz. I have also found 
that i am
> not getting oscillation on that board(the board in which i am not 
getting
> RTC updaed value ). But when i used same crystal on other board it( 
crystal
> ) seems working,so crystal is fine.
> What are the possible reason that i am not getting oscillation with 
working
> crystal
> 
> Regards,
> Pandurang S.
> 
> ________________________________
> 
> From: lpc2000@yahoogroups.com on behalf of Guillermo Prandi
> Sent: Wed 3/22/2006 4:03 PM
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Re: RTC problem in 2136
> 
> 
> --- In lpc2000@yahoogroups.com, "Pandurang Shinde" <pandurang@> 
> wrote:
> >
> > Hi,
> >           I am using LPC2136.I am facing some RTC related 
problems 
> in few boards. I am writing some value in RTC on power on but it is 
> not incrementing. 
> >          This type of problem is not in all board but few of 
> them.Some board work without any problem.
> >           I also observed that when i use jlink for debug ,value 
of 
> RTC register(SEC,MIN etc) are incrementing ,but these increment are 
> slow. When i come out of debug & send data on serial port ,i have 
> getting 0 data continously.
> >          I have also check VBAT voltage which found ok.
> >          Please help me ,if any one can.
> >      
> > Regards,
> > Pandurang S.
> > 
> > 
> > [Non-text portions of this message have been removed]
> >
> 
> Do you use an external crystal? Have you checked the oscilator pins 
> for a 32 KHz wave?
> 
> Guille
> 
> 
> 
> 
> 
> 
> 
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