Lpc2000

Hi Richard

I know that you ported FreeRTOS to the SAM7X - we did have a few 
mail exchanges about it and other things in the past.

It seems as though the AT91SAM7 Yahoo group no longer exists - at 
least I haven't been able to find it for a few weeks now - I get 
only an error message and searching for it also turns up a blank 
(very strange because it was an interesting group).

As it happens I have 'finally' got the SAM7x chips (engineering 
samples) and they are soldered onto new boards and beginning to do 
some stuff.

I am hoping to complete a port by the beginning of next week but my 
first experiences have shown that things don't always work out as 
well as expected and it may well take a biiiit longer. I have a 
couple of questions:
1. Do you know where this topic is now being discussed. I don't 
really know of any other good active group.
2. Did you do a project for IAR? I am using this with J-Link 
debugger and have lost a lot of time because as soon as I had 
stopped the code my PIT interrupt would never come again. Firstly it 
made it difficult to know what was going on when initially getting 
the interrupt up and running (not knowing that the debugger was 
causing problems...) and then having to restart after a breakpoint 
was also very annoying.
I think that I know why because after closing a memory window it 
seems to work (quite) well. It seems as though the memory window 
update was causing the PIT registers to be read and resetting 
(interrupt related) things in the process. Do you know of this 
problem and work-arounds???
3. Presently I am loading part of the project into RAM so that the 
debugging works well but the code size will not always allow this - 
it will soon have to go into FLASH. Do you have any experience / 
tips about how it is best to go about this ? [I would like to 
generally use the serial debug interface and debug difficult cases 
in FLASH with J-Link].
4. My project needs serial and Ethernet and I have a Micrel PHY. I 
supose you used the DAVICON on the Eval board. Do you have any tips 
about things to watch out for in the process?

Sorry that not directly LP2000 related (ATMEL standing in until the 
new LPC Ethernet part is available) but I think that a lot of ATMEL 
group members are also lurking around here..

Regards

Mark Butcher
www.mjbc.ch



--- In lpc2000@yahoogroups.com, "FreeRTOS Info" <nospam@F...> wrote:
>
> 
> 
> > > Here too.
> > > Win XP Pro.
> > > Firefox 1.5
> > >
> > > http://82.32.114.142:47821/
> > > http://82.32.114.142:47820/
> > > http://82.32.114.142:47822/cgi/tcp
> > > http://82.32.114.142:47822/cgi/rtos
> > >
> > > all of them works fine.
> >
> >
> > Hmm.    First round the second listed was giving me "The 
document contains
> > no data."  After multiple tries through the list then the second 
worked
> and
> > the first start complaining.  Are all of these running uIP I 
wonder?
> >
> > XP
> > Firefox 1.0.7
> 
> 
> The 47820 port is using a WizNET I2C interface.
> 
> The 47821 is Pauls uIP demo bit banging a Crystal LAN running as a 
task
> under FreeRTOS (LPC).
> 
> The 47822 is uIP running with interrupts and DMA on a SAM7X.
> 
> The number of simultaneous connections is limited (#define in the 
code).  If
> you look at a page that sends lots of small packets then each 
takes a
> connection.  I imagine that posting the addresses here is 
generating several
> simulations hits, so maybe its just running out of connections 
hence the
> intermittence.
> 
> All works fine for me, but the boards are only a few feet away.  
Also I'm
> using IE rather than Firefox.
> 
> Regards,
> Richard.
> 
> http://www.FreeRTOS.org
>