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Discussion Groups | Piclist | Problems with wisp628 and PIC12F675

A discussion group for the PICMicro microcontroller. Also called the Microchip PIC, this list is dedicated to the use and abuse of this fine, simple, microcontroller. Close to topic posts are welcome, ie. general electronics.

Problems with wisp628 and PIC12F675 - holopoint.rm - May 24 6:18:00 2004

I tried programming (for the first time) a 12f675 with my Wisp628.
The programmer can't read the target ID.

IS this because I am not using the additional circuit (the 'dongle') ?
http://www.voti.nl/wisp628/pics/dongle.gif

Also, whats a TIP120?
Is there an alternative to the Dongle ?

Thanks,
Shachar Weis.





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RE: Problems with wisp628 and PIC12F675 - Wouter van Ooijen - May 24 6:50:00 2004

> I tried programming (for the first time) a 12f675 with my Wisp628.
> The programmer can't read the target ID.

What is the exact error message?

> IS this because I am not using the additional circuit (the 'dongle') ?
> http://www.voti.nl/wisp628/pics/dongle.gif

With a new (clear) 12F675 this should (in practice) not be needed.

> Also, whats a TIP120?

a very common NPN darlington power transistor

> Is there an alternative to the Dongle ?

if you need it (see Wisp628 page) you will have to switch the power to
the target. a moer sophisticated alternative would be a series
transistor instead of a shorter, but that would reuire a more complex
circuit.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products





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Re: Problems with wisp628 and PIC12F675 - holopoint.rm - May 24 11:27:00 2004

--- In , "Wouter van Ooijen" <wouter@v...>
wrote:
> > I tried programming (for the first time) a 12f675 with my Wisp628.
> > The programmer can't read the target ID.
>
> What is the exact error message?
>
The error message is :

target auto-detect ... Sorry, I can not determine the target chip
type.
Specify a target on the command line, or maybe the chip is defect?
The Id that is read is 3FFF.

Its a clean blank PIC, i tried both with an internal and external
osciletor and I also tried replacing the PIC.






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Re: Problems with wisp628 and PIC12F675 - holopoint.rm - May 24 16:15:00 2004

Ok, I found the problem.
In the "Blink A led" schematics, when the Led+Resistor is
connected, the wisp can't ID the PIC.
When disconnected, it works but prints an error message :

C:\Program Files\XWisp\serialwin32.py:88: DeprecationWarning: integer
argument e
xpected, got float
win32file.SetCommTimeouts(self.hComPort, timeouts)
C:\Program Files\XWisp\xwisp.py:2026: FutureWarning: %u/%o/%x/%X of
negative int
will return a signed string in Python 2.4 and up
self.Log(( "__GoTo( %04X )" % Address ) + \






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RE: Re: Problems with wisp628 and PIC12F675 - Wouter van Ooijen - May 24 16:20:00 2004

> Ok, I found the problem.
> In the "Blink A led" schematics, when the Led+Resistor is
> connected, the wisp can't ID the PIC.

You probably have a Wisp628 with 470 ohm series resistors? You can
replace these with 47 ohm resistors (or simply keep the 470's and put
47's in parallel).

> When disconnected, it works but prints an error message :
>
> C:\Program Files\XWisp\serialwin32.py:88: DeprecationWarning: integer
> argument e
> xpected, got float
> win32file.SetCommTimeouts(self.hComPort, timeouts)
> C:\Program Files\XWisp\xwisp.py:2026: FutureWarning: %u/%o/%x/%X of
> negative int
> will return a signed string in Python 2.4 and up
> self.Log(( "__GoTo( %04X )" % Address ) + \

Yeh, those stupid deprecation warnings I have to get rid off. But I'm
glad it does work!

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products




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