Lpc2000

Hi Doug
Thanks for the info, and it has helped in some circumstances but I 
have to manually reset the board before I try to enter the debugger. 

I am now wondering if the board is resetting properly. The Keil 
evaluation board we are testing with has no reset IC, just an RC 
network.

Are you using a reset IC on your target board?

cheers
Simon


--- In lpc2000@yahoogroups.com, "douglasbolton" <doug@c...> wrote:
> --- In lpc2000@yahoogroups.com, "itsjustimpossible" <simonjh@b...> 
> wrote:
> > Hi
> > We are using the IAR workbench and Jlink to develop code for the 
> > LPC2129. I must use the PLL and debug from FLASH as my timing is 
> > criticle but the use of the PLL is preventing the Jlink 
connecting. 
<snip>
> 
> We had the same problem. Once you have programmed the flash with 
the 
> pll enabled the processor is history as far as the debugger is 
> concerned until you scrub the flash.
> 
> I found jlink will work ok with pll running if you set the 
following 
> in the jlink menu of the debugger.
> 
> 1. tick philips lpc download button
> 
> 2. tick reset aserts hardware reset pin
> 
> 3. although this is not the case set the cclk to whatever you are 
> running the cpu clock
> 
> we have a 10mhz crystal pumped up to 60 mhz by the pll. In theory 
we 
> should set the cclk setting to 10000 in the jlink menu. This 
doesn't 
> work. If we set it to 60000 we have never had a problem!!!!
> 
> regards Doug