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Re: [avr-gcc-list] Programming Circuit for AVRDUDE

From: Heiko Rosemann
Subject: Re: [avr-gcc-list] Programming Circuit for AVRDUDE
Date: Sat, 14 Jun 2003 16:31:52 +0200 (CEST)

Hi there,

On Fri, 13 Jun 2003, Donovan Parks wrote:

> Hello,
> My question: is there a simple (i.e. something that could be built on a
> breadboard) programming circuit that can be used to program AVR's.  I have
> read through the AVRDUDE manual and it seems promising, but does not contain
> any information on the circuits themselves.  Are there major limitations to
> programming AVR's in this manner (as opposed to using an STK500)?  What will
> I not be able to do (there is some meantion of certain fuses not being
> accessible in parallel or serial programming modes)?

I really can recommend sp12 for this - 3 Cs, 4 Rs and a crystal on the
parallel port. It works for me quite well, without external power supply.

Check http://www.xs4all.nl/~sbolt/e-spider_prog.html

Of course, as with every serial programmer, you won't be able to set certain
fuse bits on certain AVRs, but isn't the STK500 a serial programmer too? At
least the STK300 was...

HTH, Heiko 'HeRo' Rosemann

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