Subject:
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Re: SENSOR_READ doesn't return 0
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Newsgroups:
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lugnet.robotics.rcx.pbforth
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Date:
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Tue, 13 Apr 1999 09:07:51 GMT
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Reply-To:
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ROBOTS@JPSC.stopspammersCO.UK
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Viewed:
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1637 times
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> > I have been experimenting with the latest version of pbFORTH (102)
>
> AhA! Another victim within my clutches!!!!! Glad to hear you are trying
> things out, John. The more questions I get, the sooner I can get a FAQ
> out to help with the common ones.
I am just dabbling at the moment, trying a few words to try and get them
debugged. In order to fully port the SpeedBot (currently in NQC) I'll need
multitasking...
> > Which announces itself thus:
> >
> > hhii
> >
> >
> > hForth H8/300 for RCX RAM Model V1.0.0 by Ralph Hempel, 1998
> >
> > All noncommercial and commercial uses are granted.
> >
> > Please send comments, bug reports and suggestions to:
> >
> > rhempel@bmts.com
>
> That's a good sign, at least.
Oh, good - I wondered if I'd got versions mixed up somewhere. It would be a good
idea to change it to match the number of the release (V1.0.2 I presume).
>
> > I cannot get the LIGHT? word (tracker.txt) to work, it seems never to
> > return 0, usually 200 or 300 (hex). I am initialising using:
> >
> > 1 CONSTANT RawLight
> > 1 CONSTANT RunButton
> > 3 CONSTANT MotorStop
>
> You have obviously had some FORTH experience, I'll have to admit I haven't
> fully tested the CONSTANT word...
It hadn't occurred to me that ther might be something wrong with CONSTANT, but I
think the problem was there before. Making the sensor idx a constant was one of
the things I did to make sure that I didn't have an inconsistancy.
> > : BOT_INIT
> >
> > ." BOT_INIT" CR \
> >
> > RCX_INIT
> > POWER_INIT
> > BUTTON_INIT
> > SENSOR_INIT
> >
> > RawLight SENSOR_ACTIVE
> > 3 RawLight SENSOR_TYPE ( Light )
> > 0 RawLight SENSOR_MODE ( Raw )
> >
> > ;
> >
> > What is the significance of a non-zero return by SENSOR_READ ?
>
> This LOOKS ok, the non-zero return generally indicates BUSY, or not ready.
I wondered if the actual values had any significance.
> First off, does the script as presented work? In other words, does TRACKER.TXT
> work on your RCX? If so, then I'd be looking at the CONSTANT word and making
> sure it works properly too.
I need to move the motor connections to implement Tracker, which are buried
under the claw mounting, which is why I haven't done it up to now, but it looks
like I have to bite that bullet.
> Please email me again if you have problems, and give me as much feedback as
> you can, good or bad...
Do you have a list of all the words defined by pbFORTH (no WORDS or SEE). I have
been working through the .ASM files extracting the comments, but if you have a
readymade list somewhere, that would help.
How do you use RCX_INIT POWER_INIT and POWER_OFF to shutdown? and how do you get
it back once shutdown - the ON/OFF button?
> Cheers,
>
> Ralph Hempel - P.Eng
--
John & James Cooper, Wallington, UK
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Message is in Reply To:
 | | RE: SENSOR_READ doesn't return 0
|
| (...) AhA! Another victim within my clutches!!!!! Glad to hear you are trying things out, John. The more questions I get, the sooner I can get a FAQ out to help with the common ones. (...) That's a good sign, at least. (...) You have obviously had (...) (26 years ago, 13-Apr-99, to lugnet.robotics.rcx.pbforth)
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