Subject:
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Re: Help me!!!!!
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Fri, 10 Oct 1997 20:44:20 GMT
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Original-From:
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LACAZE Christophe <artone@club-internet.AVOIDSPAMfr>
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Viewed:
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1229 times
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Hi, I'am an HandyBoard french user and
I have exactly the same problem.
I dont find the problem since 2 month, then if you
have the solution (one day perapse) please,
send me a mail.
I have wrap an HC11A1 debugger board to find the bug,
and descrimine elements.
No result.
artone@club-internet.fr
Christophe LACAZE
Developpeur Hard/Soft
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> De : John Plasterer <stu5s43@nortel.ca>
> A : handyboard@media.mit.edu
> Cc : roundtable@zerius.uvic.ca
> Objet : Help me!!!!!
> Date : vendredi 10 octobre 1997 14:00
>
> I have just finished installing the CPU and serial link to the • handyboard. I
> have tryed the test step to check that the download program can make it • to
> the second stage and it failed.
>
> It gives me a serial recieve time out error. I am pretty certain that I • wired
> everything properly. What did I do wrong?
>
> My hook up:
>
> I have the power going into the charger board and a telephone cable • running
> from the charger to the CPU board. I bought a straight through DB25 male • to
> DB25 female cable that connects the PC to the charger board. The serial • light
> is always on when the handyboard is connected to the PC and the PC is on.
>
> Here is what happens when I try to download:
>
> 1) I set the handyboard into download mode and both lights go out.
> 2) I start the download from the computer and start the download.
> 3) The serial light on the chargerboard begins to flash.
> 4) The power light on the CPU board turns back on.
> 5) lots of dots on the pc and then some underscores.
> 6) An error message that says "Serial Recieve timed out. 256 charctors
> left to send"
> 7) I yank my hair out and smash my head against the wall.
>
> Part 7 only happened after the 10th try.
>
> Now I've tryed everything... replacing the phone cord(The phone cord has
> four wires). The phone cord that I replaced it with was of the wrong
> oreintation(The charge light whent really bright on the charger board).
> I have tryed checking all the soldering on the board and the orientation
> of capacitors and chips. The handyboard passed all the tests until this
> point but I did not look at the clock waveform on an ocilliscope but
> only with a voltmeter.
>
> I suspect that the following are possible problems:
>
> 1) The serial cable: I think I may have baught the wrong type of serial
> cable. The cable is of fair quality so I do not think that the cable
> could be faulty. This is what I think is the most likely source of
> the problem.
>
> 2) The telephone cable: I am not sure that this is even the right
> cable but I think that it is correct. It has four wires and the
> handyboard is fully powered when it is pluged in through the
> telephone wire.
>
> 3) The serial interface chip: Could this be damaged in some way?
>
> 4) The clock: The clock may be running at the wrong speed. I put
> one of those oval metal ones in and put the capacitors beside it. This
> should be working. I after all did some tests to check.
>
> 5) Faulty HC11. I don't think that this is the source of my problems
> but who knows.
>
> Any help would be greatly apreciated...
>
> John Plasterer
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