Lpc2000

--- In lpc2000@yahoogroups.com, Tom Walsh <tom@o...> wrote:
>
> rtstofer wrote:
> 
> >--- In lpc2000@yahoogroups.com, "lpcarmed" <lpcarmed@g...> wrote:
> >  
> >
> >>Have you tried gcc with Eclipse as an IDE? That puts you right 
into a
> >>driver seat of a BMW.
> >>    
> >>
> >
> >I am using that setup and it works well.  However, I haven't 
really 
> >come to love OCD Remote and Insight.  Besides, I don't have 
enough 
> >pins to give away just to use jtag.
> >
> >Eventually I need to find out how to cut back on the library 
code - it 
> >is GIGANTIC.
> >
> >  
> >
> What library are you using?  I'm using NewLib and it seems to be 
> reasonable in size.  Of course, I stay away from stuff like sprintf
(), 
> sscanf() and use itoa() + my own atoi() routines..  Sometimes you 
just 
> gotta write your own stuff, heh.  ;-)
> 
> TomW

As far as I know, I am using newlib.  However, the uIP web server 
application uses vsprintf and that pulls in a LOT of library code.  
The entire network project seems to take about 23k (0000h - 5887h) 
and the library adds nearly another 32K (5888h - D244h).

After reading the promo stuff about uIP, I thought the stack would 
be on the small side.  When I got the web server running (without 
FreeRTOS), it takes 60444 bytes including the .rodata.  HUGE!

Maybe I am bringing in too many libraries but it seemed right at the 
time:

ARCHIVE1= "C:/Program Files/GNUARM/lib/gcc/arm-elf/3.4.3"
ARCHIVE2= "C:/Program Files/GNUARM/arm-elf/lib"
LIBFLAGS= -L${ARCHIVE2} -lc -lg -L$(ARCHIVE1) -lgcc 

Anyway, I now want to integrate FreeRTOS (I think) and add my 
FAT32/CF drivers and my MP3 stuff.  The objective is a simple 
networkable MP3 player for special effects.  I will probably change 
from httpd to telnetd so I can just open a connection and send a 
command to play a file.

But FreeRTOS will require a lot of thought.  I have to share things 
like the 8 bit data bus, 4 bit addr bus, chip select and RD/WR 
signals.  No one process can just own them.  And, I can't have 
buffer underrun for the MP3 chip.  It would be even more interesting 
if I stored the MP3 files on an nfs server but I already have a 
Linux board doing that - see www.gumstix.com using the gumstix, 
cfstix and audiostix.  It works but it is price prohibitive for 
Halloween effects.  I need about 6 of these gadgets.

If I have messed up on the libraries, please let me know!

Thanks
Richard