Lpc2000

Hi Paul,
 
I've seen the book and its an excellent guide to OS use in embedded
systems, however, for commercial use Micrium do require some upfront
license agreement + cash (I think its 100s of $).  
 
eCOS is totally free for use in commercial applications, however, you
are on your own from a support point-of-view (unless you pay companies
for support (e.g ecoscentric.com)).
 
My interest is sparked by the requirement to port an existing eCOS
application to LPC2xxxx, hence, using another OS is not an option.
 
 
Hugh @  <http://www.ashling.com/support/lpc2100/>
http://www.ashling.com/support/lpc2100/ 
 
 
 -----Original Message-----
From: Paul Curtis [mailto:plc@...] 
Sent: 05 January 2004 14:04
To: lpc2100@yahoogroups.com
Subject: RE: [lpc2100] LPC2xxx eCOS port



Hugh,

The port of uC/OS to hardware costs nothing as long as the port is
contributed back to Jean's site so he can host it.  The OS is
inexpensive, delivered with the uC/OS book on CD.  I'm not sure of the
deployment costs, though, but I'm sure it's competetive with other OS
offerings, otherwise Micrium would go out of business.

I'm not swayed one way or the other on RTOS support in embedded systems,
I've never really had a good re asonto use one.  Even for big embedded
systems with 16 68K boards on VMEbus with 56 simulataneous serial inputs
at 38K4 streaming to a terrestrial datacast system, I wasn't persuaded
to use an RTOS, just interrupts.

Oh, and all my code fits well inside 4K for any conceivable task, of
course!  ;-)

--
Paul Curtis, Rowley Associates Ltd http://www.rowley.co.uk
<http://www.rowley.co.uk/> 
CrossWorks for MSP430 and ARM processors 

      -----Original Message-----
      From: Hugh O'Keeffe [mailto:hugh.okeeffe@...] 
      Sent: 05 January 2004 10:39
      To: lpc2100@yahoogroups.com
      Subject: RE: [lpc2100] LPC2xxx eCOS port
      
      
      Hi Paul,
      
      My understanding is that eCOS is highly configurable (via GUI) ,
footprints < 32K are possible and it is open-source with no
up-front/royalty costs.  AFAIK, uC/OS is already ported to LPC2xxx,
however, this OS is not open-source and does require an upfront payment
(see http://www.ucos-ii.com/).
      
      
      

      Hugh @ http://www.ashling.com/support/lpc2100/ 

            -----Original Message-----
            From: Paul Curtis [mailto:plc@...] 
            Sent: 05 January 2004 10:27
            To: lpc2100@yahoogroups.com
            Subject: RE: [lpc2100] LPC2xxx eCOS port
            
            
            Hugh,
            
            > Hi,
            > Anyone on the group done any work on this ? I know
that eCOS 
            > is available for ARM7, however, I'm guessing that it
will 
            > need specific device drivers for LPC2xxx peripherals
such as 
            > UARTS, VIC and Flash ? Any feedback appreciated
            
            With only 128K of FLASH on an LPC, you're not going to
get much
            meaningful eCOS code onto a 2106.  Why not port uC/OS?
            
            --
            Paul Curtis, Rowley Associates Ltd
http://www.rowley.co.uk
            CrossWorks for MSP430 and ARM processors 
            
            
            
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