Lpc2000

>Sometimes you want some functions in RAM.  Those functions count as
 >initialized global/static variables.

How do one make a function go into ram?

/Ake

Karl Olsen wrote:

> --- In lpc2000@yahoogroups.com, "mhaines4102" <mhaines4102@y...>
> wrote:
> >
> > On the 2138, there is 512K of flash and 32K of RAM. Can anyone tell
> > me what goes in flash vs. RAM (i.e. globals, stacks, heap, executing
> > code.) I have lots of assumptions, but would like a clear answer.
>
> When using gcc, you can define this in the linker script and startup
> files.  The normal setup is:
>
> Const variables (global and static) go into flash.
>
> Uninitialized global and static variables go into RAM (zeroed by the
> startup code).
>
> Initialized global and static variables go into RAM, but their
> initialization values are in flash, so they take up space both places.
>
> Heap goes into RAM.
>
> Stack goes into RAM.
>
> Code goes into flash.
>
> Sometimes you want some functions in RAM.  Those functions count as
> initialized global/static variables.
>
> You can always look at the linker map file if in doubt.  (Actually,
> you should look at it even if you aren't in doubt.)
>
> Karl Olsen
>
>
>
>
>
>
> SPONSORED LINKS
> Microprocessor 
> <http://groups.yahoo.com/gads?t=ms&k=Microprocessor&w1=Microprocessor&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s=93&.sig=tsVC-J9hJ5qyXg0WPR0l6g> 
> 	Microcontrollers 
> <http://groups.yahoo.com/gads?t=ms&k=Microcontrollers&w1=Microprocessor&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s=93&.sig=DvJVNqC_pqRTm8Xq01nxwg> 
> 	Pic microcontrollers 
> <http://groups.yahoo.com/gads?t=ms&k=Pic+microcontrollers&w1=Microprocessor&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s=93&.sig=TpkoX4KofDJ7c6LyBvUqVQ> 
>
> 8051 microprocessor 
> <http://groups.yahoo.com/gads?t=ms&k=8051+microprocessor&w1=Microprocessor&w2=Microcontrollers&w3=Pic+microcontrollers&w4=8051+microprocessor&c=4&s=93&.sig=1Ipf1Fjfbd_HVIlekkDP-A> 
>
>
>
> ------------------------------------------------------------------------
> YAHOO! GROUPS LINKS
>
>     *  Visit your group "lpc2000
>       <http://groups.yahoo.com/group/lpc2000>" on the web.
>        
>     *  To unsubscribe from this group, send an email to:
>        lpc2000-unsubscribe@yahoogroups.com
>       <mailto:lpc2000-unsubscribe@yahoogroups.com?subject=Unsubscribe>
>        
>     *  Your use of Yahoo! Groups is subject to the Yahoo! Terms of
>       Service <http://docs.yahoo.com/info/terms/>.
>
>
> ------------------------------------------------------------------------
>


-- 
 ---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergavägen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 84 84 102
Company home: http://www.eurosource.se      
Kryddor/Te/Kaffe: http://www.brattberg.com
Personal homepage: http://www.eurosource.se/akhe
Automated home: http://www.vscp.org



[Non-text portions of this message have been removed]