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Subject: 
Re: Problem with the bytekode 25 xx.. start task download..
Newsgroups: 
lugnet.robotics
Date: 
Tue, 8 Feb 2000 15:30:16 GMT
Viewed: 
1308 times
  
BTW, Your web page seems cool, and I would like to know
more about controling robots over internet, however,
the norwegian is a bit difficult for most of us.  Have you
though about making an english version of your page?
(Of course, my first choice would be french, but then many
might complain the way I do now...)

Instead of sending byte kodes, why don't you use SPIRIT.ocx?
Since you seems to be using the standard firmware, this yould
be much more easier...

As of your program, I infere that you sended the packet
header, and that you computed the checksum correctly.

Also, you have to tell the length of the downloaded program.
If I am correct, this is the third byte after the opcode 25.
Here an extract from kekoa's page:

"byte unknown Always 0.
short task Task index. 0..9.
short length Task length.

Prepare the RCX for a download of task number task of the current program. Space
for length bytes is allocated in the memory map by moving other data as needed.
"

In your example below, the length seems zero.  This is a little short...
Denis.


Set program number: 91 04  "This works fine"
Start task download: 25 00 00 00 04 00 "This don' t work".
I get "no response" from the RCX on the last comand. And then i
can't go on with 45 "transfere data".

I hope someone can help me/ give me some hints...

I also have a Lego mindstorms RCX page (but in norwegian) at:
http://128.39.75.29.

--

Denis Cousineau, Postdoc           *****************************
Cognitive psychology               *                           *
Indiana University                 * Etudiant devant l'eternel *
Psychology Building                *                           *
Bloomington, 47405                 *****************************

Office: (812) 856-5217             Fax:    (812) 855-1086
E-mail: decousin@indiana.edu       http://Prelude.PSY.UMontreal.CA/~cousined



Message has 1 Reply:
  Re: Problem with the bytekode 25 xx.. start task download..
 
(...) download> (...) For those that are interested in trivia, the "unknown" byte in opcode 25 is a bit map indicating which of the eight possible subroutines are called by the task. The RCX firmware checks this map in the implementation of "start (...) (25 years ago, 9-Feb-00, to lugnet.robotics)

Message is in Reply To:
  Problem with the bytekode 25 xx.. start task download..
 
Hello. I am a student at faculty of engineering Oslo, Norway. I am trying to controll the RCX(I have made a lego car) over internett. I have a Java-interface to the RCX to send the bytekodes. I have tryed Kekoa Proudfoot instructions: Set program (...) (25 years ago, 8-Feb-00, to lugnet.robotics)

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