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PICList Thread
'Serial programming'
1994\11\09@095604 by crocontroller discussion list

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My first experience of a PIC was in building a controller, serial comms device
and remote unit controller with LCD support and 16 remote units running
on a twisted pair network.....
Programming was done in serial mode from a compiler and programmer I wrote
in BASIC (euch! but only choice - no PC at home).  Problem was, I ruined
several PICs, as the CP bit set itself no matter what I wrote to the fuses...
Bit of a bugger when you've got a _small_ budget!

OK now I-m working on a PICSTART, but I tried this idea of sending the
parallel data to do bulk erase, but it didn't work.  It would be very nice
to build the serial bulk erase command into it.

Bryan

--
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BRYAN CROTAZ - spam_OUTb.crotazTakeThisOuTspamic.ac.uk
---------------------------------
TECHNICAL MANAGER
Student Television Of Imperial College
Beit Quad, Prince Consort Road
London  SW7 2BB
Tel. 071-594-8104
Fax. 071-225-2309 attn. STOIC

1994\11\09@120958 by crocontroller discussion list

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As a newbie to PICs, I'm interested to know why the CP bit always
set in your initial attempts, and what you found out to prevent
it.

John Kallend
(ex-patriot Brit in Chicago)


'Serial Programming'
1995\07\28@100731 by David Tait
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Erik Hermann wrote:

> I've seen a very simple circuit to read (program ?)  the 16C84
> directly via PC-Parallel Port.
> But I don't remember where.

Perhaps you mean Microchip application note AN589.  A Postscript copy
can be snatched from Microchip:

ftp://ftp.ultranet.com/biz/mchip/an589.zip

Details of another approach are available; get:

ftp://ftp.ee.ualberta.ca/pub/cookbook/comp/ibm/pic84*

David
--
.....david.taitKILLspamspam@spam@man.ac.uk

1995\07\28@101409 by Antti Lukats

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>Hi.
>
>I've seen a very simple circuit to read (program ?)  the 16C84
>directly via PC-Parallel Port.
>But I don't remember where.
>
>Does anyone know how to do this, or where to get this circuit ?
>
ftp://rasi.lr.ttu.ee/pub/sis/msdos/pgmtools/pip-02.zip is a
programmer software for PIC family micros + Serial EEPROM's
able to work with many selfmade PIC16C84 programmers

Programmer drivers are in:
ftp://rasi.lr.ttu.ee/pub/sis/msdos/drivers/

for schematics you may browse:
http://rasi.lr.ttu.ee/~sis
there are few links to pages with embedded
Programmer schematics.

Antti
sisspamKILLspamrasi.lr.ttu.ee

1995\07\28@102019 by Erik Hermann
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>> I've seen a very simple circuit to read (program ?)  the 16C84
>> directly via PC-Parallel Port.
>> But I don't remember where.
>
>Perhaps you mean Microchip application note AN589.  A Postscript copy

I've already buildt this circuit, thanks.
But I'm looking for a simpler an cheaper circuit, because this part will
perhaps be used as an educational system for students.
That means, every student has to buy one.

>
>Details of another approach are available; get:
>
>ftp://ftp.ee.ualberta.ca/pub/cookbook/comp/ibm/pic84*

Ist this your cuircuit ?
I know it.


Thanks

  - Erik

1995\07\28@113241 by David Tait

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Erik Hermann wrote:

> I've already buildt this circuit [AN589], thanks.
> But I'm looking for a simpler an cheaper circuit, because this part will
> perhaps be used as an educational system for students.
> That means, every student has to buy one.

Well, the prize for the most simple circuit must go to Mark Cox.  The
PIC-FAQ has details of the primary FTP site for his design, however,
if you visit Silicon Studio's site as recommended by Antti in an
earlier post, you can grab a copy from there:

ftp://rasi.lr.ttu.ee/pub/sis/prod/microchip/3rd-Party/misc/blowpic.zip

Is this the one you mean?

> >ftp://ftp.ee.ualberta.ca/pub/cookbook/comp/ibm/pic84*
>
> Ist this your cuircuit ?
> I know it.

Yes.  I guess the implication is that you know it but have rejected it
also.  If you haven't looked at the cookbook site for a while then you
can now pickup some PCB artwork by Mike Laidlaw (pic84art.zip) which
is a bit more integrated than the version that has been there for a
while (pic84pcb.zip).

David
--
.....david.taitKILLspamspam.....man.ac.uk


'Serial programming'
1999\07\26@180046 by Darren Logan
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Can someone explain to me how one can program a PIC serially using only two
pins ??.

Where can I find the serial programmers ?? and how do they work ??

Thanks,
Darren

1999\07\26@184144 by Greg Wiley

picon face
Darren Logan <EraseMEDAZLOGANspam_OUTspamTakeThisOuTAOL.COM> wrote:


> Can someone explain to me how one can program a PIC serially using only
two
> pins ??.

Excruciating detail is available in the
programming spec sheets at microchip.
Different devices have different specs.

It's not really just two pins, you need
to supply power, ground, and a program
signal.  But once that's done, you shift
the programming commands in using
two pins.  On one pin (program data),
you set the bit to be shifted, on the
other pin (program clock) you toggle
the levels to shift the data bit in.

> Where can I find the serial programmers ?? and how do they work ??

Read the articles by Myke Predko
at http://www.rentron.com/pic.htm for a
much better explanation and a simple
programmer (for the 16F84) circuit.

 -greg

1999\07\26@185219 by Tony Nixon

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Darren Logan <DAZLOGANspamspam_OUTAOL.COM> wrote:

> Where can I find the serial programmers ?? and how do they work ??

Check out http://www.picnpoke.com/engine.html

There's an example of reading a PIC 16F84 there as well.

--
Best regards

Tony

'The Engine' - Design your own programmer.

http://www.picnpoke.com
Email @spam@picnpokeKILLspamspamcdi.com.au

1999\07\26@185430 by Dan Creagan

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The new Square One book on Serial Programming for the PIC is
very good also. It has some nice explanations and routines
in it.  It explains all the different ways, including using
RS232 and two wire, one wire, I2C, etc. http://www.sq-1.com

Dan

{Original Message removed}

1999\07\26@185438 by Dan Creagan

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Now that is really embarrassing. I answered the wrong
question with my previous post. It was a good answer .. just
a dumb submission.  The Serial Pic'n book is good - better
than this poster.

Sorry,

Dan

{Original Message removed}


'serial programming'
1999\10\29@081102 by PSL
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