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'[PIC]: Programmer problems'
2002\12\10@060925 by Dave King

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I just finished writing the program that would end world hunger, give
unlimited free energy and
a whiter brighter smile..... went to program it with my Pic16Pro40 aka Kit
96 and am getting nothing.

I went through every test I could find and just finished trudging through
the achieves and can't find
anything wrong with it. The only thing I can think of is that my wall wart
is not putting out enough
to program. With an empty socket I get 13.05vdc on vpp/mclr. Its a 13.5vdc
@1.5A power supply.
Is the simple fix a higher volt supply? I thought someone else had this but
couldn't find it in the achieves.
When I put my F628's in they program, blank check but then verify is no
good right at 0000. Does
that sound like the power isn't there to properly program?

Has anyone used IC-Prog? Any comments? good or bad? If I can figure out the
setup for the pic16pro40
it really seems to have a nice interface and does every pic  and best of
all its free.

Thanks.

Dave

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2002\12\10@061946 by Dominic Stratten

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I use David Taits FPP - I've found it to be totally reliable and its free
(not sure if it supports F628's though). I had all sorts of problems with
IC-Prog.

I am running my programmer of a cheap 12v wall wart - it kicks out around
18v with no load.

Buy an unregulated wart preferably one around 15v - plenty of overhead
there.


{Original Message removed}

2002\12\10@065327 by Lyle Hazelwood

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>..... went to program it with my Pic16Pro40 aka Kit
> 96 and am getting nothing.
>
> When I put my F628's in they program, blank check but then verify is
no
> good right at 0000. Does
> that sound like the power isn't there to properly program?
>
> Has anyone used IC-Prog? Any comments? good or bad? If I can figure
out the
> setup for the pic16pro40
> it really seems to have a nice interface and does every pic  and
best of
> all its free.
I had the same problem with 18F chips, same programmer, and picall
last week.
I changed to IC-Prog and got running again, thought he programming
cycle is a bit
slower. Set the hardware menu to ProPic2, then invert Data Out, Data
In, and Clock.
This setup has worked for me on 18F248 with Win98SE, and 18F458 on
Win2K after
adding GiveIO.sys drivers, since I don't get to play Admin at work.
Good Luck,
Lyle

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2002\12\10@071029 by Nick Veys

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What software are you using?  If it's PICALLw, newest version then
that's a common problem.  If not, well, I'm of no help. :)

Nick Veys / spam_OUTnickTakeThisOuTspamveys.com / http://www.veys.com

] {Original Message removed}

2002\12\10@162855 by Dave King

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At 06:11 AM 10/12/02 -0600, you wrote:
>What software are you using?  If it's PICALLw, newest version then
>that's a common problem.  If not, well, I'm of no help. :)
>
>Nick Veys / .....nickKILLspamspam@spam@veys.com / http://www.veys.com

I tried PicallW which the kit suggested, IC-Prog, and discovered
Nigel's WinPicProg late last night. All with the same result.
PicallW has settings for this kit, but WinPicProg is written just for it.

I found a couple of pages on what to check for and the kits functions
perfectly according
to all of them. And other than one thing I can't see any problem. If I
toggle MCLR/VPP
it only goes from 12.68 to 13.05. Any idea of the 12.68 should be there at
all or does
mclr/vpp stay high all the time normally?

On Nigels page he shows the error result as being from too low a voltage so
I'll
try a higher output converter and see if this goes away.

Dave

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2002\12\10@163929 by Dave King

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>I had the same problem with 18F chips, same programmer, and picall
>last week. I changed to IC-Prog and got running again, thought he
>programming cycle is a bit slower. Set the hardware menu to ProPic2,
>  then invert Data Out, Data In, and Clock.

Just to clarify  Data Out, Data In, and Clock are all set inverted?

>This setup has worked for me on 18F248 with Win98SE, and 18F458 on
>Win2K after
>adding GiveIO.sys drivers, since I don't get to play Admin at work.

This is on a 98SE system so it should work...hopefully.

Thanks

Dave

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'[PIC]: Programmer Problems'
2004\04\29@123126 by Andrew Kilpatrick
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Hi,

So I'm really poor and don't have a "real" PIC programmer. Instead I
use an El-Cheapo-style parallel port programmer with IC-Prog. I'm using
the PIC18F252, and sometimes it won't program... unless I put my scope
probe on RB7 for the entire duration. I use ICP, and most of my circuits
are fine, but I've just run across yet another circuit that is finiky.

Does anyone know what my scope probe is doing to fix it? I've tried
such things as:

- putting a small capacitor between the pin and ground (0.1uF, 0.001uF,
 22pF, etc.)
- putting a 10K resistor on the pin to ground, to +5, etc.

I assume that it's some sort of timing or loading problem.... but what?!


Any ideas would be greatly appreciated.


Andrew

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2004\04\29@165228 by Wouter van Ooijen

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> Any ideas would be greatly appreciated.

Totally unrelated to what you are asking but maybe still a solution: you
are apparently right enough to have an 18F chip. Get yourself a 16F628A,
take a look at http://www.voti.nl/wisp628, build it, use your existing
progger to load the firmware and then kiss it goodby.

As for the question itself: something seems to be on the edge of
working. I would not advise you to try and find out what it is exactly
unless that thrills you (which means you are less interested in PIC
programming itself). I recall Olin was hunted by a somewhat similar
problem. He apparently did not solve it, so I would not give myself much
of a chance to do so. But maybe you will find out.

Wouter van Ooijen

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2004\04\30@053741 by Nigel Orr

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pic microcontroller discussion list <> wrote:
> Does anyone know what my scope probe is doing to fix it? I've tried

A 'scope probe (1:1) plugged into a 'scope should look something like a
22pF cap in parallel with a 10Meg resistor to ground, you could try that
combination if the aim is just to make it work, rather than to find out why
it doesn't...

If you want to locate the source of the problem, I'd first suspect a bad
ground somewhere, make sure you haven't missed a 0V link somewhere, or
maybe the scope is grounded and the PC isn't?

Nigel
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2004\04\30@053948 by Nigel Orr

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Oops, make that 1Meg to ground... corrected message follows

> Does anyone know what my scope probe is doing to fix it? I've tried

A 'scope probe (1:1) plugged into a 'scope should look something like a
22pF cap in parallel with a 1Meg resistor to ground, you could try that
combination if the aim is just to make it work, rather than to find out why
it doesn't...

If you want to locate the source of the problem, I'd first suspect a bad
ground somewhere, make sure you haven't missed a 0V link somewhere, or
maybe the scope is grounded and the PC isn't?

Nigel
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Axon Instruments Ltd., Wardes Road,Inverurie,Aberdeenshire,UK,AB51 3TT
              Tel:+44 1467 622332 Fax:+44 1467 625235
                  http://www.axoninstruments.co.uk

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2004\04\30@153834 by John N. Power

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{Quote hidden}

You thought of the capacitive effect, but did you think of the ground problem?
The scope probe may provide a better ground than the one provided through
the cable to the PC.

John Power

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