Re: Advocating Lua on an embedded systems fair

[Bogdan Marinescu <bogdan.marinescu@...>]

You can go with 256k/64k ROM/RAM without doubts. eLua has that on the
LM3S (Cortex-M3) chips, and can do quite a lot with that, including a
scripting web server written in Lua that can (of course) execute Lua
code embedded in HTML pages. You're bound to run out of memory very
quickly if you try to overuse it, but still, it _works_ :) And it also
has libraries for peripheral access, a shell (not the Lua shell,
although you can invoke that from the eLua shell) and other such
goodies.

Best,
Bogdan

On Mon, Feb 9, 2009 at 2:05 PM, John Hind <john.hind@zen.co.uk> wrote:
> I would say something like "practical applications in as little as 256k/64k
> ROM/RAM". Remember the audience: you are telling them they can use a SOAC
> microcontroller costing less than $20 (but the 32bit high-end of the range,
> not an 8bit chip). Few interpreted language systems can boast that! The
> embedded space is very cost sensitive and the important thing is the price
> break-point: if it fits on a SOAC the cost will be much lower than a
> multi-chip solution.
>
> -----Original Message-----
> From: lua-bounces@bazar2.conectiva.com.br
> [mailto:lua-bounces@bazar2.conectiva.com.br] On Behalf Of Timm S. Mueller
> Sent: 09 February 2009 11:41
> To: Lua list
> Subject: Re: Advocating Lua on an embedded systems fair
>
> On Mon, 9 Feb 2009 10:03:19 -0000
> "John Hind" <john.hind@zen.co.uk> wrote:
>
>> One nit-pick. I would prefer to quote "reasonable practical minimum"
>> requirements rather than the absolute minimum achievable in a pure
>> benchmarking exercise. On this basis 100K of flash seems low, and in the
>> embedded context it would be useful to talk about RAM also as these
>> resources are often very tight on embedded chips.
>
> It wasn't meant to indicate the total size of the flash. I would expect
> (and implied) additional libraries and the actual application on the
> device, which was the reason I was talking about Lua's "ROM-able"
> binary. My suggestion for the next iteration would be "Fits into 128k
> ROM, 64k RAM per interpreter state". This should be solid, even if
> standard libraries were missing on the target system. Still, the space
> for a line of text that size is very limited, suggestions for better
> wording are welcome.
>
> - Timm
>
> --
> Timm S. Mueller <tmueller@schulze-mueller.de>,
> Schulze & Mueller GbR, Erbacher Straße 26, 64342 Seeheim-Jugenheim,
> Gesellschafter: Franciska Schulze, Timm S. Mueller,
> Tel. +49 6257 648853-0, http://www.schulze-mueller.de/
>