WISP628 problem

Started by nford85 May 19, 2004
Hi

I have successfully used a homebuilt WISP628 for nearly 6 months
now. But just suddenly, now, when I try to program any pic I get an
error message like <i>IOError: verification failure: different data
at
address 0034: file target</i>. Then if I try to run the pic,
it
seems as if the old program was still in it.

Has anyone else had a similar problem to this?
Is there an easy solution to fix it?

Any suggestions are welcome
Thanks
Nick



> I have successfully used a homebuilt WISP628 for nearly 6 months
> now. But just suddenly, now, when I try to program any pic I get an
> error message like <i>IOError: verification failure: different data
> at
> address 0034: file target</i>. Then if I try to run the pic,
> it
> seems as if the old program was still in it.
>
> Has anyone else had a similar problem to this?
> Is there an easy solution to fix it?

More details please, like target chip, maybe attach the .hex file?

Wouter van Ooijen

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



Hi

I have tried to program these PICs just with the blink an LED code :
16F84A, 16F628, 18F242 and 18F252.
Each time I try to program the PIC I get that message.
If I read the code back from the pic it is just the code that was in
the pic before I started having this problem (I compared it with my
backup code).

Anyway, here is the HEX code I was previously trying to get into a
18F242.
:020000040000FA
:0A0000001AEF00F027EF00F014D013
:08001800D8CF81F0E8CF80F0A1
:10002000E0CF82F082C0E0FF80C0E8FF81C0D8FF4F
:1000300010001100826A000E946E816AFF0E936EAA
:10004000000E826E1200828C8288829E1200850EC3
:10005000740E81B6E80E826E000000000000000001
:0A00600000000000000027EF00F090
:020000040030CA
:0E000000FFFAFDFEFFFEFAFFFFFFFFFFFFFF0E
:00000001FF

Nick

--- In , "Wouter van Ooijen" <wouter@v...>
wrote:
> > I have successfully used a homebuilt WISP628 for nearly 6 months
> > now. But just suddenly, now, when I try to program any pic I
get an
> > error message like <i>IOError: verification failure: different
data
> > at
> > address 0034: file target</i>. Then if I try to run the
pic,
> > it
> > seems as if the old program was still in it.
> >
> > Has anyone else had a similar problem to this?
> > Is there an easy solution to fix it?
>
> More details please, like target chip, maybe attach the .hex file?
>
> Wouter van Ooijen
>
> -- -------
> Van Ooijen Technische Informatica: www.voti.nl
> consultancy, development, PICmicro products





> I have tried to program these PICs just with the blink an LED code :
> 16F84A, 16F628, 18F242 and 18F252.

After the failure message, what is the voltage on the target's MCLR pin?

Wouter van Ooijen

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



--- In , "Wouter van Ooijen" <wouter@v...>
wrote:
> > I have tried to program these PICs just with the blink an LED
code :
> > 16F84A, 16F628, 18F242 and 18F252.
>
> After the failure message, what is the voltage on the target's MCLR
pin?

The voltage is about 12.6V

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