Lpc2000

stephan2148 wrote:
> --- In lpc2000@yahoogroups.com, "stephan2148" <stephan2148@...> wrote:
>>
>> Hi,
>> I had an application running a uart at 155200 on LPC2148, debugging as
>> normal with Jlink. Then I find the link quit, and I tracked it down to
>> the Uart now running at 9600 even though I tell it to run at 155200.
>> Setting the other end to 9600, the application works again, but I
>> don't want that baud.
>> Has anyone else run into this? I have a feeling it is the PLL messing
>> up. I had similar problems long ago, where I had nonstandard bauds
>> coming out and had to erase the part with the Philips utility.  I'll
>> try that to see if I get it back, but what happened?  Will it happen
>> again?
>> Thanks,
>> Steve
>>
> Make that "115200".  And, I also notice that my other Uart that is
> used at 9600Baud, IS at 9600 baud still working.  So, now they are
> both at 9600 while I wanted one at 9600 and one at 115200.?

So your baud dropped by a factor of 12. Is there a factor 12 somewhere
in your PLL configuration? Like dropping from 3 x Fcrystal with VPB
divider set to 1 to 1 x Fcrystal to VPB divider of 1/4th?

If erasing the part helps, then I can imagine that there is still
some code in flash that sets the baud to 9600 and you accidentally
jumped into it.

Regards,
Bertrik