Subject:
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Config register 0x3c trauma
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 23 Jul 1998 13:14:38 GMT
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Original-From:
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Skye Legon <slegon@watfast.uwaterloo.[ihatespam]ca>
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Viewed:
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1102 times
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You all may recall my problems downloading to my board and receiving
a "config register set to 0x3c" error. I am glad to report there was
a very simple solution, but it was a nightmare to debug. So allow me
to share my wisdom so other unfortunate souls don't go through this.
You get this 0x3c error when you DON'T HAVE A COMMON GROUND between
the serial board and the handy board. I got the same error for 2
different HBs and 3 different HC11 chips (using HBDL on Win95) so it
appears repeatable, not just a spurious floating value. If you use DL
or DLM you just get a "synchronization" error. One for the books...
(or the mail archive).
Cheers, Skye.
PS: In case anyone is wondering how this came to be: I am using the
serial/charger board only for communication, not charging (thus I never
checked the charging ciruit). In addition I am powering the HB on a
completely different circuit than the serial board, thus the common
ground is only needed for communication. I had taken care of this,
but an electrical mishap broke the ground connection, and it was not
easy to discover this was the problem!
+-----------------------------------------+----------------------------+
| Skye Legon | University of Waterloo |
| Systems Design Engineering | __/ __/ __/ __/ |
| Pattern Analysis & Machine Intelligence | __/ __/ __/ __/ __/ |
| 143 Columbia St. West, Unit E-4 | __/ __/ __/ ____/ __/ |
| Waterloo Ontario CANADA N2L 3L2 | __/__/__/ __/__/\__/__/ |
| +1(519)888-9249 | ______/ ___/ \___/ |
| slegon@uwaterloo.ca | DC 2620, 888-4567 x5192 |
+-----------------------------------------+----------------------------+
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