Subject:
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Re: fast firmware downloader
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Mon, 4 Oct 1999 14:00:06 GMT
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Viewed:
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1167 times
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Kekoa Proudfoot wrote:
> The URL is: http://graphics.stanford.edu/~kekoa/rcx/firmdl3.c
>
> Just in the nick of time? The original firmdl.c was dated 10/3/98. It is
> currently 10/3/99 (PDT at least). This was not planned!
[mlnoga@mauve mlnoga]$ make firmdl3
cc firmdl3.c -o firmdl3
firmdl3.c:146: rcx_comm.h: No such file or directory
firmdl3.c:569: srec.h: No such file or directory
make: *** [firmdl3] Error 1
Seems to me we're both getting a little hasty here ;-) You need to
remove those two leftover lines.
Checking the strip flag before copying the s-record lines is a really
clever idea, and that of cause explains the huge gain in speed for
firm0309.lgo. For gcc-generated files, however, no difference should be
apparent. You're saving the 0x55 and 0x00 header bytes, I was using a
larger transfer size.
Other than that, much parallel evolution everywhere. The minor
differences are most interesting - hexadecimal vs decimal opcodes and
transfer sizes, preference for case distinctions in the small and in the
large, different approaches to global settings etc.
I notice you managed to treat the short packets in a general way. Good.
My exception handling was rather crude there. Now why don't we turn the
packet code into a proper state machine decoding bytes one by one? If we
also change nbread to read bytewise, we can eliminate timeout expiry
altogether if a valid reply comes in from the RCX.
PS1: If only you could change your indentation style to the one and only
divinely sanctioned -br -ce -bad -bap -sob -npcs -lp -npsl ...
PS2: As always, the spirit of friendly competition in the Extreme Team
is fascinating and quite efficient. Did you ever watch The Big
Blue?
--
"Sentir est le rival de Comprendre, comme Agir est l'antagonisme de
Penser."
-Balzac
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Message has 1 Reply:
 | | RE: fast firmware downloader
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| (...) Is this the movie where there are guys competing in unassisted (except by a huge weight) deep dives? Those guys are mental... Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH for LEGO Mindstorms at: (URL) ---...--- Reply to: rhempel at (...) (25 years ago, 4-Oct-99, to lugnet.robotics.rcx.legos)
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Message is in Reply To:
| | Re: fast firmware downloader
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| (...) The URL is: (URL) in the nick of time? The original firmdl.c was dated 10/3/98. It is currently 10/3/99 (PDT at least). This was not planned! Like firmdl.c, firmdl3.c is a single file joined from smaller ones for simplicity. I will link a .tgz (...) (25 years ago, 4-Oct-99, to lugnet.robotics.rcx.legos, lugnet.robotics.rcx)
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