Re: [BLACKBOX] Seasoned Linux.

From: [at]} <Wojtek>
Date: Wed, 12 Jan 2011 23:58:27 -0500

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On Thu, 13 Jan 2011, Norayr Chilingarian wrote:

> My main question is which are limitations of your hardware? I guess if
> it runs GNU/Linux and X server, then it is powerful enough to draw GTK
> widgets.

Two different boards are shown at http://www.skutek.com/VME.htm and on
http://www.blackstamp.net. Both board run ucLinux, which is a MMU-less
port of the Linux kernel. The limitations of ucLinux are described here:
http://docs.blackfin.uclinux.org/doku.php?id=presentations:uclinux-dist:intro

Note that ucLinux is using uClibc, which is both small and fast, but more
limited than glibc.

Another limitation is that the embedded systems are not using full
X-windows, but rather Nano-X/MicroWindows. I am still uncertain whether
one can cast a remote display using Nano-X. I asked several times on
Nano-X mailing list and I could not comprehend the answers. I think yes,
but I am not sure yet.
http://docs.blackfin.uclinux.org/doku.php?id=uclinux-dist:microwindows

> Do you mind using GTK?

I do not know. At this point I am using gnuplot embedded on my board,
which is very slow and very limited. I am guessing anything else would be
better. But I do not want anything overly complex. The simpler, the
better. ("Make it as simple as possible, but not simpler.")

In any case, it has to use Nano-X because full X-windows is not available.


> (Besides, FreePascal basic libraries do not contain calls to the GNU
> system (or let's say GNU C Library). They only interface to kernel API.
> This allows them to not have dependencies from the GLIBC versions, fpc
> compiled binaries work just on top of Linux kernel, without the GNU system.)

Not using glibc sounds good to me because ucLinux should not use glibc.


As you can see, I am hardly an expert in all this embedded software. Most
of it is way above my head.

Wojtek

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Received on Thu Jan 13 2011 - 05:58:27 UTC