Subject:
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Re: GCC 2.8.1 for HC11
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 8 Apr 1999 18:33:35 GMT
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Original-From:
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Keith Hearn <{khearn@legato.}IHateSpam{com}>
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Viewed:
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1069 times
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I've taken a look at Chuck's LCD code, and I agree that it's the best
I've come across.
I spent last weekend studying how to program the HB in assembly.
There is a woeful lack of documentation for it. There is plenty of
docs on programming in IC, but below that level, you end up looking
at schematics.
I do have the Motorola reference books on the 6811, and have no
problem figuring out how to program the SCI, SPI, the various
handshake modes, et. al., but figuring out how they relate to the
various handy board (and especially expansion board) connectors is
really tough.
Is there something I've missed that describes how to do low level
programming on the handyboard?
Just about everything I've figured out how to do came from reading
other people's code.
So I've spent some hours lately reading the code other people have
written for the handyboard and the miniboard. And I really like
Chuck's libraries.
BTW, if there's nothing out there that describes low-level programming
on the handyboard, I'll probably write up my notes on what I've
learned and make them available so future people don't have to go
through what I'm going through.
Keith
In message <4.1.19990408102525.03d34100@mailhost.hq.freegate.com>, Chuck McMani
s writes:
>
> Curt, may I suggest that rather than re-invent the wheel you take the LCD
> code out of the Handyboard libraries I wrote that are on the icc11 site.
> They should pretty much compile out of the box and I know they work :-)
> They are also about 75% more efficient than the IC version as they don't
> spend anytime busy waiting on the LCD (this really helps multiple servo
> performance!) The interface isn't exactly the same as IC (there are things
> like cursor positioning routines and support for other LCD sizes) but they
> are useful.
>
> --Chuck
>
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Message has 3 Replies:
 | | Re: GCC 2.8.1 for HC11
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| Keith, I have a reference for you. It is "Microcomputer Engineering," 2nd ed. by Gene H. Miller. You can get it from one of the online book sellers, like amazon.com. It is around $85 or so. In this text is the whole range of things having to do with (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
| | | Re: GCC 2.8.1 for HC11
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| (...) I've been through Charles Hacker's Buffalo monitor code, the Miniboard GCC & ICC libraries, the Handyboard ICC libraries, and a few other sources, and looked at the schematics and data books a lot. That's the best way to get intimately (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
| | | Re: GCC 2.8.1 for HC11
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| (...) My favorite 68HC11 text resource is: 68HC11 Microcontroller by Joseph D. Greenfield Amazon Price: $87.50 (Wow! I'm sure I didn't spend nearly this much when I bought mine 3 years ago...) The sections on using the 68HC11 timers for interrupts, (...) (25 years ago, 9-Apr-99, to lugnet.robotics.handyboard)
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Message is in Reply To:
| | Re: GCC 2.8.1 for HC11
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| (...) ... (...) Curt, may I suggest that rather than re-invent the wheel you take the LCD code out of the Handyboard libraries I wrote that are on the icc11 site. They should pretty much compile out of the box and I know they work :-) They are also (...) (25 years ago, 8-Apr-99, to lugnet.robotics.handyboard)
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