Subject:
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Re: interfacing V2X compass
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 25 Aug 1998 22:10:03 GMT
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Original-From:
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Rick Moll <RICKMOLL@MVP.NETspamless>
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Viewed:
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1503 times
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John Duff wrote:
> Rick,
> I had the same problem. Also the compass would occassionally lock up and
> require a reset. I tied the reset pin to a digital out and added a routine
> to take all the necessary pins high and then cycle the reset pin. I reset on
> initialization and could call the routine later it the compass locks. I
> have an assembler program that incorporates this. I use the V2X in slave
> mode. I'd be happy to send it to you if it would help
I ended up doing the same thing. I appreciate hearing that someone else had
thesame problem, and used the same solution. It sure is frustrating that you
can't
trust the documentation that came with the compass; if you need to reset the
thing *AFTER* powerup than they should of put it in the documentation
&@&$%#)(&^%!
Thanks, I really do appreciate hearing a confirmation of the problem.
Later,
Rick
> Rick Moll wrote:
>
> > HB Folks,
> >
> > I'm currently using the HB to interface to a Vector 2X compass. I'm
> > using the compass in RAW slave mode, so it's different than the hardware
> > interface that's documented on the HB web site. But I did notice that
> > the documented interface just left the ~RESET pin float high, so I
> > assumed that the compass could be trusted to power up reliably as long
> > as the interfaced pins are connected to i/o lines that boot up in a
> > high-impedance (as should all of the SPI lines on the 6811). The V2X
> > documentation says that should work, and the interface documented on the
> > HB web site implied that it at least worked for someone.
> >
> > The problem I'm having is that most of the time this works fine; but
> > occasionally the V2X gets into some state where it will not power up and
> > work properly until I momentarily lower the ~RESET line (with a wire
> > jumper).
> >
> > Have other folks got the V2X to work reliably for them with the ~RESET
> > pin left unconnected???
> >
> > Thanks,
> >
> > Rick
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Message is in Reply To:
 | | Re: interfacing V2X compass
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| Rick, I had the same problem. Also the compass would occassionally lock up and require a reset. I tied the reset pin to a digital out and added a routine to take all the necessary pins high and then cycle the reset pin. I reset on initialization and (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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