anyone using lisp on gumstix?
in [Lisp]
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From: toddeman on 21 Jan 2010 11:46 i develop C code for embedded systems as my day job. i am learning lisp for fun. just wondering if anyone is currently using lisp on a gumstix successfully (or for that matter, if anyone has any suggestions for using lisp on an embedded platform). just so everyone knows my motivation: i am beginning to see the advantages of using lisp to develop (remember, i am just a beginner, by no means proficient...) so i was curious how lisp development applied to embedded systems would compare to my C development. i am just looking for a basic 'skunk works' project to start, like blinking some LED's or something (perhaps hooked to a shift register controlled via the i2c interface...). the basic need would be lisp on some embedded device with access to basic peripherals (like i2c, spi, etc...) thanks, _Toddeman
From: fortunatus on 21 Jan 2010 16:11 Though I haven't found out how myself, I understand that ECL can produce stand-alone C code from Lisp. The main issue is what to exclude. In general Lisp compiled code has access to the full Lisp development environment - including symbol table, interpreter, compiler, and standard functions (COMMON-LISP package). But with ECL my understanding is that such big elements of the environment can be excluded so that small standalone (or almost stand alone) C routines are produced. http://ecls.sourceforge.net/ http://blog.s21g.com/articles/1649 http://ecls.wikispaces.com/ On the other hand, some Lisp environments are < 5 MB, and some embedded systems have > 5 MB RAM, and so could support the whole shebang. Though I have been following this group for several years, I have not seen an example of either case. I'd like someone who runs Lisp on an embedded CPU or SOAC to put up a web page diary of how they did it and how they use it. As I am also an embedded C programmer, I'd appreciate it! Even though I also do embedded C for my day job, I do use Lisp extensively for doing tests on my embedded systems from PC/Windows. Both real time data extraction, and also non-realtime afterword analysis. I also use Lisp with Portable AllegroServe on Linux to script compile, download and run operations via telnet to hosts and HTML client calls to other systems including the embedded systems. Some examples of how you can work Lisp into your life even if your primary job is centered on C. Some people use Lisp to write assemblers for embedded CPUs. It's convenient if you need to write an assembler, because if the assembler input is in the form of Lisp executable forms representing the instruction set, then you get really good macros for free.
From: Brad Lucier on 21 Jan 2010 17:48 Quite a while ago I built Gambit Scheme for the gumstix, it worked fine: http://dynamo.iro.umontreal.ca/~gambit/wiki/index.php/Main_Page Brad
From: Pascal J. Bourguignon on 21 Jan 2010 20:42 fortunatus <daniel.eliason(a)excite.com> writes: > Though I haven't found out how myself, I understand that ECL can > produce stand-alone C code from Lisp. The main issue is what to > exclude. In general Lisp compiled code has access to the full Lisp > development environment - including symbol table, interpreter, > compiler, and standard functions (COMMON-LISP package). But with ECL > my understanding is that such big elements of the environment can be > excluded so that small standalone (or almost stand alone) C routines > are produced. Nah! ecl just uses the exact same trick as C programs, namely, to put everything in a big library. The hw executable produced from hw.c may be less than 4KB, but it still needs 1.3 MB of libc.so to run... Well, libecl.so is 1.3 MB too, so you can get a hw executable produced from hw.lisp that is less than 4KB too. But in both cases, you still need 1.3MB of memory, and possibly much more as soon as you start to use more stuff such as GUI, toolkits, etc. -- __Pascal Bourguignon__ http://www.informatimago.com/
From: Art on 21 Jan 2010 20:45
> if anyone has any suggestions for using lisp on an embedded platform Not so long ago in the lispworks's list there was this: http://article.gmane.org/gmane.lisp.lispworks.general/9675 (the use of CL in a commercial embedded system) |