Did you try actually with the PicKit2 cmd line tool written by MC (and which
is ported to linux), or another tool?

Tamas


On Feb 10, 2008 10:18 PM, Dro Kulix <dro@drocore.com> wrote:

> wouter van ooijen wrote:
> >> Actually, there's no reset circuit.  /MCLR is set to I/O mode and the
> >> only thing connected to it is Vpp on the ICSP header.  (However, if
> >> capacitance is still a problem, it bears mentioning that this is a
> >> solderless breadboard.)
> >>
> >> Someone else mentioned that it might be a "use VPP first
> >> program entry"
> >> thing.  I can't test that theory yet because pk2 (the PICkit 2 driver
> >> program on Linux) doesn't yet have a Vpp before Vdd setting.  I'm
> >> working on getting a copy of Win2k on a spare machine to see
> >> if this is
> >> indeed the problem...
> >
> > Using those settings Vpp-before-Vdd is probably needed. With the Windows
> > software that is not selected explicitly, so I am not sure that is
> > indeed the problem. What decoupling do you have on Vdd? Should be a
> > 100nF near the target chip, and nothing more.
>
> I got the Win2k box up and running, and it seems indeed that the problem
> is the Vpp first thing.  Specifically, here's what happens:  Without Vpp
> first, getting the programmer to recognize the chip (Tools > Check
> Communication) seems to work (I couldn't get that far on the Linux
> software).  However, I get "No device detected" for read, write, verify,
> erase, and blank check unless VPP First Program Entry is on.
>
> Good news: Problem solved.
>
> Bad news: I'm thus limited to the Windows box across the room for PIC
> purposes. Kind of annoying since my workflow consists primarily of Unix
> utilities, but I guess I'll live.
>
> Thanks!
> dro
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