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Re: [avr-chat] how to program arduino with avrdude and AVRISPmkII *witho

From: Joerg Wunsch
Subject: Re: [avr-chat] how to program arduino with avrdude and AVRISPmkII *without* nuking bootloader?
Date: Mon, 18 Apr 2011 08:16:42 +0200 (MET DST)

Britton Kerin <address@hidden> wrote:

> I'd like to get the AVRISPmkII programming to be that fast, and also
> not necessarily nuke the bootloader.

Impossible.  Well, almost: it's possible exactly once only, by the
time the application section is still unprogrammed, so you don't have
to issue a chip erase command first.

Next time, the application section has to be erased, and the only
method the ISP algorithm offers for this is a chip erase, which will
(obviously) also erase the bootloader.  The ISP algorithm doesn't
offer a page erase capability.

(All this applies to classic AVRs: Xmegas are organized differently.)

cheers, J"org               .-.-.   --... ...--   -.. .  DL8DTL

http://www.sax.de/~joerg/                        NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)

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