Subject:
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Question on Kent Farnsworth's IR routine?
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sat, 26 Apr 1997 00:37:46 GMT
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Original-From:
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Jun Nolasco <nolasco@+spamless+inx.net>
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Reply-To:
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nolasco@inx.net*saynotospam*
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Viewed:
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2007 times
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On the Handyboard software archive, Kent has the following
port definitions in the file HB2_EQ.ASM:
* equates for Sharp IR sensors -- start at port 4
IR_MASK_ZERO EQU %00000100
IR_ADDR_ZERO EQU $1000 /* port A */
IR_MASK_ONE EQU %00100000
IR_ADDR_ONE EQU $7f00 /* Handy Board */
IR_MASK_TWO EQU %01000000
IR_ADDR_TWO EQU $7f00 /* Handy Board */
IR_MASK_THREE EQU %10000000
IR_ADDR_THREE EQU $7f00 /* Handy Board */
Mask/addr zero is not a problem. But, just what digital ports do
the others map to? The definition says start at port 4. But, looking
at the HB schematics, only mask/addr one seems to map to a digital
port (#9). Mask/addr two seems to map to the STOP switch, and mask/addr
three seems to map to the START switch. Did I read the port bits in the
schematics in reverse order?
Thanks in advance.
Jun Nolasco
nolasco@inx.net
P.S. Does anyone have a routine for the HB which performs serial
output on any of the free output bits?
Also, does anyone know where I can get inexpensive RS-232 radio
transceivers which I can use to perform PC <---> HB comm links?
Short range (100-200 feet) devices will do.
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