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PICList Thread
'16F877 Routines'
2000\03\11@042154 by Grant Forest

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Goodday All,

Have been playing with the 16F84 for a few weeks now and can flash a few
leds, Rx an Rs232 from PC and drive a LCD. Think the semi-mastering of
the 16F84 is the way to go before one jumps into the 16F877.

The 16F84 is great as there is a lot of beginners code around to download
etc. (have been playing around for 20 years since the 8008)

So at last my questions.
1. Where do I find a few sites that have 16F877 code.
2. Any Pic books that specialize on the 16F877 (zero Pic books in any
Melbourne technical book stores)
3. What does OT stand for?
4. Any clues on how to sort the Piclist emails from other emails.(my
business emails get swamped, and often lost for a few days)

Tks
Grant Forest
{ will not waste space with Quotes, Qualifications etc..}

2000\03\11@104846 by Byron A Jeff

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>
> Goodday All,
>
> Have been playing with the 16F84 for a few weeks now and can flash a few
> leds, Rx an Rs232 from PC and drive a LCD. Think the semi-mastering of
> the 16F84 is the way to go before one jumps into the 16F877.

Could be. But considering that between the Low Voltage Programming mode
which lets you build a programmer with a cable, and tools like Tony
Nixon's ROMzap (http://www.picnpoke.com/demo/ROMzap.zip) that allows for
in-circuit programming using only a serial cable, it's debabtable as to
whether the 16F84 is the best place to start.

>
> The 16F84 is great as there is a lot of beginners code around to download
> etc. (have been playing around for 20 years since the 8008)

And almost all of that code works on the 16F877. The only caveat is that
the portA registers are initialized as Analog inputs. Once they are turned
into digital inputs you can use it just like a 16F84, with more ports, and
of course more peripherals.

As for the periperals, they are compatible with the peripherals of the rest
of the midrange PIC family. Code examples for the A/D, timer capture, and
serial is the same as the 16C7X and 16C6X parts.

>
> So at last my questions.
> 1. Where do I find a few sites that have 16F877 code.

You can be less part specific. Look for code for PIC's in general and they'll
work fine with the 16F87X parts.

> 2. Any Pic books that specialize on the 16F877 (zero Pic books in any
> Melbourne technical book stores)

No. It's too soon for that. May later this year. Again Any of the existing
PIC books that use the midrange PIC parts like the 16C74 are appropriate.

> 3. What does OT stand for?

Off Topic. used to mark messages that are not directly related to PICs.

> 4. Any clues on how to sort the Piclist emails from other emails.(my
> business emails get swamped, and often lost for a few days)

Depends on the system and E-mail program you're using. Most have some mechanism
for filtering. I'm using procmail on my Sun to direct PICLIST messages to its
own folder.

Hope this helps,

BAJ

2000\03\11@111000 by Scott Dattalo

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On Sat, 11 Mar 2000, Grant Forest wrote:

> So at last my questions.
> 1. Where do I find a few sites that have 16F877 code.

gpsim (a software simulator) is now in source forge CVS. I've got a couple
of 16f877 .asm files that I wrote just to test the peripherals of the
16f877. Which is to say, the programs do nothing useful as such, but they
illustrate how the peripherals can be programmed. (Or, at least how I
understand they should be programmed). The latest test programs illustrate
code flash and data flash reads and writes and illustrate the 10-bit a/d
converter programming.

the gpsim source forge page is here:

https://sourceforge.net/project/?group_id=2341

and the cvs repository:
http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/?cvsroot=gpsim

from here you can navigate down examples/14bit:
http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/?cvsroot=gpsim

Many midrange core test programs may be found here. The two 16f877
examples are p16f877_test.asm and p16f877_test2.asm


http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/p16f877_test.asm?cvsroot=gpsim

http://cvs.sourceforge.net/cgi-bin/cvsweb.cgi/examples/14bit/p16f877_test2.asm?cvsroot=gpsim


Scott

2000\03\11@134802 by Mike Werner

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On Sat, Mar 11, 2000 at 08:08:49PM +1100, Grant Forest wrote:
> 4. Any clues on how to sort the Piclist emails from other emails.(my
> business emails get swamped, and often lost for a few days)

That depends on what email client you use.  Most clients written
over the past few years have some basic filtering capability built
into them.  Once you have located the filtering controls in your client,
you then need to decide what part of the message to base the filtering
rules on.  What I did was change a setting on the server for my
subscription.  If you send a message to:
spam_OUTlistervTakeThisOuTspammitvma.mit.edu

with the line:
set piclist subjecthdr

as the only contents of the message body, the server will put:
[PICLIST]
at the beginning of the subject line of messages sent to you.
And you can then filter every message with a subject line that starts
with [PICLIST] into a different folder.

However, one of the primary factors will be the client that you use
and what it is capable of.
--
Mike Werner  KA8YSD           |  "Where do you want to go today?"
ICQ# 12934898                 |  "As far from Redmond as possible!"
'91 GS500E                    |
Morgantown WV                 |  Only dead fish go with the flow.

2000\03\11@142546 by Joe Dudas

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I have also noticed that all my piclist messages have .....PICLISTKILLspamspam@spam@MITVMA.MIT.EDU
in the to line. I filter them that way using MS outlook express.

Good luck

{Quote hidden}

2000\03\13@114808 by jamesnewton

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I don't understand why people think that the '84 is easier to start with
than the '877. The '877 can directly run '84 code with a very few (and minor
exceptions) and the ICD makes it very easy to watch the code run and debug
it. Even without ICD, a bootloader like Tony's ROMZap and the stickleyregmon
or picos can really make the '877 a joy at super low cost. See
http://techref.massmind.org/idea/ebb
for more info.

See
http://www.piclist.com
for filtering piclist posts with special subject lines and definition of
"OT". Please, please, please read this one page.

---
James Newton .....jamesnewtonKILLspamspam.....geocities.com 1-619-652-0593
http://techref.massmind.org NEW! FINALLY A REAL NAME!
Members can add private/public comments/pages ($0 TANSTAAFL web hosting)


{Original Message removed}

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