Lpc2000

Thanks, Sten. The web site doesn't mention the software cost. Due to 
the structure of the project, I cannot enter any intrincated 
licensing schemes (such as tied to a defined number of units 
produced). Could you post the cost here? For example, for a single 
product line (a product and its successors), for life?

Guille

--- In lpc2000@yahoogroups.com, Sten <list@n...> wrote:
>
> guillermoprandi wrote:
> > Hi! I am building a board featuring the LPC2138 µC. This board 
will 
> > basically need to interface with three serial devices (two via 
> > internal UARTs and a third via MAX3100, though suggestions are 
> > welcomed about this). This device must be very low power; it 
should 
> > wake up only when needed, which is: 1) there's data available 
from 
> > any of the three ports, 2) there's data waiting to be transmitted 
on 
> > any of the ports and the port becomes free and 3) a periodical 
> > overall check (every second or so). This means that theoretically 
the 
> > processor can enter the idle state quite often. I'm looking for 
some 
> > (free if possible) multithreaded OS that would handle the 
transition 
> > to the processor's idle state on traditionally blocking calls 
like 
> > fread() and fwrite(), expecting to wake up on interrupt; also, 
some 
> > preemptive multitasking should be supported, in case some thread 
> > enters an exceptionally long calculating task. Probably there's 
no 
> > known OS that directly supports this; in this case, I'd like to 
know 
> > which other OS might be a good starting point to accomplish this 
by 
> > making the modifications myself. I'm aiming to use the GNU 
libraries 
> > (I ignore how difficult or messy would it be to modify them to 
> > support this). Finally, it is my understanding that the VERY low 
> > power "power down" mode would not be useful for my application, 
since 
> > the peripherals (therefore the UARTs and SPI) are shut down in 
this 
> > mode. Any advise or hint on these subjects will be greately 
> > appreciated.
> > 
> > Guille
> 
> Hello Guille,
> 
> if you are looking for a full-featured preemtive multitasking RTOS 
using
> CPU idle mode just have a look at
> 
>    http://www.net-attack.de/
> 
> 
> Sten
> 
> -- 
> /************************************************
>  Do you need a tiny and efficient real time
>  operating system (RTOS) with a preemtive
>  multitasking for LPC2000 or AT91SAM7?
> 
>    http://nanortos.net-attack.de/
> 
>  Or some open-source tools and code for LPC2000?
> 
>    http://www.net-attack.de/
> 
> ************************************************/
>