[En-Nut-Discussion] Newbie question - what do I needforinteractive debugging of Ethernut???

[Alexander Baranov]

Hi, Harald.
Well, maybe it was AVR Studio but it had never happened with ISP and does
not happen with Olimex. You are right about external clock but under those
circumstances it was more easy to replace the processor. Louis Beaudoin
never mentioned about this feature of disabling JTAG fuse. I'll look at it.
Thanks, Alex
----- Original Message ----- 
From: "Harald Kipp" <harald.kipp at egnite.de>
To: "Ethernut User Chat (English)" <en-nut-discussion at egnite.de>
Sent: Friday, July 22, 2005 9:38 AM
Subject: Re: [En-Nut-Discussion] Newbie question - what do I
needforinteractive debugging of Ethernut???


> Hi Alexander,
>
> I doubt. Probably the programming software running on
> the PC spoiled the fuses. For example: AVRStudio fails
> to read the fuses (target power supply was off, serial
> port blocked or whatever). Then writing back the fuses
> results in a disaster.
>
> Indeed the SP Duo allows to completely disable the
> device by misprogramming the clock and disabling the
> JTAG fuse. However, it should still be possible to
> reprogram the ATmega by feeding an external clock.
> Did I miss something?
>
> Harald
>
> At 07:59 22.07.2005 -0400, you wrote:
>
> >This DUO twice had spoilt the fuses of processor so reliably that I had
to
> >change the processor. Even ISP could not correct it.
> >Alexander
>
> _______________________________________________
> En-Nut-Discussion mailing list
> En-Nut-Discussion at egnite.de
> http://www.egnite.de/mailman/listinfo.cgi/en-nut-discussion
>
>