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'[PIC:] Programming Warp-13 firmware to a 18F252'
2004\12\14@173505 by jwrowlan

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I’m trying to update the firmware in my Warp-13a programmer with the latest firmware available from Newfound electronics.  The firmware requires an 18F252 which I have, but the old firmware in the warp can’t write to this device.  Does anybody know of a cheap and easy way to program the 18FXX2 or 18FXX8 chips?  Is anybody aware of any software to program these chips with the NOPPP or David Tait’s programmers? A source for one time programming?  

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2004\12\14@175509 by Mike Hord

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Check out Wouter's Wisp628.

http://www.voti.nl/wisp628/index.html

All you have to do is program the 628, and then the Wisp628
can be used to program the 252.  The whole thing can be
built on a breadboard and I daresay (except for the 628) you'll
likely have all the bits lying about.

Mike H.

> I'm trying to update the firmware in my Warp-13a programmer with the latest firmware available from Newfound electronics.  The firmware requires an 18F252 which I have, but the old firmware in the warp can't write to this device.  Does anybody know of a cheap and easy way to program the 18FXX2 or 18FXX8 chips?  Is anybody aware of any software to program these chips with the NOPPP or David Tait's programmers? A source for one time programming?
>
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> Give the gift of Internet access this holiday season.
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2004\12\15@040029 by Midgley John

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See, that's the thing about Piclist. I resubscribed after 4 years (blimey,
are you all still here?) absence to ask this EXACT question, and before I
can type it out, bingo!

Cheers.
John

{Original Message removed}

2004\12\15@053951 by Peter Moreton

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John,

As you are in the UK, there will be an article in the next issue of
"Elektor" magazine (out Dec 17th) describing how to program PIC18F parts
using a David Tait-style programmer, and using IC-PROG (http://www.ic-prog.com) on
the PC.

Alternatively, you can post the 'F252 to me, and I'll stick it in a
PICstart+, flash it, and post it back!

Peter Moreton


{Original Message removed}

2004\12\15@075807 by Midgley John

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Peter

Well I take that most kindly (the offer to flash a replacement for me). In
the meantime though, another line of enquiry has borne fruit - there's a
chap in the US (phanderson.com) who will ship one ready flashed for a price
(with the current exchange rate) that I can hardly match for a blank.

On the other hand, if it doesn't show up for ages I might get back to you. I
don't want to make yet another programmer - I've already got the Warp 13a
and an older one from Forest Electronic Developments. Two's enough...

Cheers
John

{Original Message removed}

2004\12\15@101516 by Mike Hord

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> Mike,
>
> Thanks, that looks like a cheap and workable solution.  In fact, I should
> probably scrap the Warp and just use the Wisp628.  Will have to order
> a couple of 16F628's and give it a try.  I have a few 16F873 and 876's,
> do you think these would work in place of the 628?  If the source code
> needs to be tweaked to use them is it available?

I've never tried it.  I have an ICD2 and a WARP-13, so having a Wisp628
too would be unnecessary (although I'm sure I'll now get 10 messages
on why it is a good idea!).  I've never heard any complaints about it,
though, so it might not be a bad idea just to have an extra device around.

Just remember that the WARP-13 will do EEPROM and OTP chips and
the ICD2 or Wisp628 will not.

Mike H.
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2004\12\15@133838 by jwrowlan

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That's a very good point, and one reason to fix-up the Warp and get it working again.  Also it works directly with MPLAB as a PICSTART+ replacement.  What do you think about using a 16F876 instead of the 628?  Looks to me like the 876 is just an upgraded part with more pins that I think should do the trick.  Plus, I already have one on the breadboard with a bootloader installed.  

Jim R.  




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2004\12\15@210649 by Chris Williams

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Please post this article, I'm using that style programmer, and I'm wanting
to start messing with the 18f chips. Thanks

{Original Message removed}

2004\12\16@031023 by Jan-Erik Soderholm

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> Please post this article, I'm using that style programmer,
> and I'm wanting
> to start messing with the 18f chips. Thanks

I don't think Elektor articles are available online
(some shorter are).
But you can check that yourself at
http://www.elektor-electronics.co.uk

Jan-Erik.

{Quote hidden}

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2004\12\29@005510 by jwrowlan

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Mike and all,

Wanted to report that I succeeded in updating the Warp-13 firmware with the Wisp628 programmer.  Encountered several problems along the way but succeeded in using a 16F873 as the base for the Wisp code with minimal changes to the software.  Learned a lot about the JAL compiler in the process.  With the Wisp(873) and Xwisp driver I was able to program the new "blue pole 1.5" firmware to the 18F252 and drop it into the Warp-13a.  Had some difficulty setting the config bits, but discovered that this was because of the order they were being set in the firmware *.hex file and the code protection settings.  Once I got all that figured out and the 252 programmed, I dropped it into the Warp, fired it up and it worked the first time.  Took about 3X the amount of time I planned but learning new things often requires at least that amount of time.  

Thanks for all your help.  

-- "Chris Williams" <spam_OUTwired57TakeThisOuTspamgmail.com> wrote:
Please post this article, I'm using that style programmer, and I'm wanting
to start messing with the 18f chips. Thanks

{Original Message removed}

2004\12\29@095406 by Mike Hord

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> Mike and all,
>
> Wanted to report that I succeeded in updating the Warp-13 firmware with the Wisp628 programmer.  Encountered several problems along the way but succeeded in using a 16F873 as the base for the Wisp code with minimal changes to the software.  Learned a lot about the JAL compiler in the process.  With the Wisp(873) and Xwisp driver I was able to program the new "blue pole 1.5" firmware to the 18F252 and drop it into the Warp-13a.  Had some difficulty setting the config bits, but discovered that this was because of the order they were being set in the firmware *.hex file and the code protection settings.  Once I got all that figured out and the 252 programmed, I dropped it into the Warp, fired it up and it worked the first time.  Took about 3X the amount of time I planned but learning new things often requires at least that amount of time.
>
> Thanks for all your help.

Good to know.  I've always kind of wondered if that sort of "making a
duck lay a chicken egg" programmer creation would work.

I suppose there's no reason to suspect it wouldn't, but it's always
nice to have a real-world confirmation.

Mike H.

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