Lpc2000

soren_t_hansen <soren_t_hansen@...> schrieb am Tue, 26 Jul 2005 
08:16:23 -0000:

> I'm having some problems with the timer on a lpc2132 in the following
> way: I'm developing a program which I'm running from RAM while
> debugging. I've set up MEMMAP=2 to remap the interrupt vectors and it
> does work .... sometimes. Here goes ..
>
> I use Eclipse with the Zylin embedded plugin. When I want to debug I
> download the program and starts execution. But the first time I end up
> in the DApt_Handler no matter what. Then I download the program once
> more (without powercycling the board) and this time it all runs
> without problems (I'm watching a global counter). If I then try to
> download once more, it sometimes work and sometimes don't.
> I have the ADC running at the same time and it suffers the same
> problems, but if I run without the timer and just the ADC it works
> like a charm. If I run the Timer without the ADC I still get the problem.

You should reset the VIC (disable all interrupts) before downloading
(gdb init script).
Be also sure you have MEMMAP set correctly before downloading.
I link my vectors at 0 so I set MEMMAP to 2 before. If you link
your vectors to 0x40000000 be sure to set MEMMAP to 0, and your code
sets it to 2.


-- 
42Bastian Schick