RE: ack! oops again-- RCX program quesiton

["Erik Nauman" <ENauman@xxxxxxxxxxxxxxxx>]

This works perfectly! Thank you also for the explanation of LOOP. I
guess it's the same as LAUNCH in onscreen commands. 


Erik Nauman
Middle School Technology Coordinator
The Hewitt School
212-994-2610

-----Original Message-----
From: mwforum-admin@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
[mailto:mwforum-admin@xxxxxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Alain
Tougas
Sent: Monday, April 07, 2008 2:09 PM
To: mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject: RE: ack! oops again-- RCX program quesiton

Hi,

LOOP creates a parallel process. In fact, the way your START procedure
is organized, it runs LOWER, it launches the LOOP and it runs RAISE
without waiting.

So LOOP creates a parallel process and launches it... Being parallel,
the interpreter then immediately to the next instruction. That's not
what you want. The "recursive" approach below is different. The
recursive procedure
(CHECKTEMP) spins on itself until the condition is met. When that
happens, this recursion is "killed" and the interpreter goes to the next
line.

Try it out.

I'm not sure I understand what you want to do, but this MAY be the
naswer.
In theory, the RCX does NOT support recursion but MW "plays a trick" and
makes it work. It uses the RCX firmware in a fancy way and makes it do
things it was not meant to...


to start
LOWER
CHECKTEMP
RAISE
end

to SENDINFO
sendmessage temp1
wait 10
end

to CHECKTEMP
if temp1 > 310 [stop]
SENDINFO
CHECKTEMP
end

-----Original Message-----
From: mwforum-admin@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
[mailto:mwforum-admin@xxxxxxxxxxxxxxxxxxxxxxxxxxxx]On Behalf Of Erik
Nauman
Sent: Monday, April 07, 2008 12:56 PM
To: mwforum@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Subject: ack! oops again-- RCX program quesiton


Sorry again, I'll be very careful not to hit ctrl + enter again in
mid-post...


Maybe there's a better forum for this, but I have a question about using
the loop command.
I'm trying to get the looping part of this RCX program to stop looping
and go on to the next part of the procedure if the temperature reaches a
certain value. If I put the final, raising procedure in place of [stop]
it works but it loops the raising procedure and I don't want that part
looping. How do I get out of the loop?

to start
procedure to lower the thermometer
loop [if temp1 > 310 [stop]
temperature]
procedure to raise thermometer
end

to temperature
sendmessage temp1
wait 10
end

Thanks,

Erik Nauman
The Hewitt School